/**
 * ====================================================================
 * ELITE ACADEMY - PREMIUM EDUCATION PLATFORM STYLESHEET
 * ====================================================================
 * Design System: Luxury Midnight Navy & Radiant Gold
 * Version: 2.0.0 (Production Release)
 * Language Support: English & Uzbek (Lotin)
 * ====================================================================
 */

/* ====================================================================
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS & SYSTEM VARIABLES)
   ==================================================================== */

:root {
  /* --- Brand Core Color Tokens (International EdTech Standard) --- */
  --bg-primary-900: #070B16;
  --bg-primary-800: #0B1020;  /* Midnight Navy */
  --bg-primary-700: #10162A;
  --bg-primary-600: #151B2D;  /* Deep Graphite */
  --bg-primary-500: #1B2238;

  /* --- Secondary Surfaces & Elevations --- */
  --bg-secondary-800: #151B2D;
  --bg-secondary-700: #1A2238;
  --bg-secondary-600: #202A44;
  --bg-secondary-500: #283454;
  --bg-secondary-400: #334168;

  /* --- Accent Palette: Champagne Gold (Used with restraint) --- */
  --gold-primary: #D8B45B;    /* Champagne Gold */
  --gold-light: #E4C87F;
  --gold-lighter: #EED79D;
  --gold-bright: #F7E6BC;
  --gold-dark: #B59341;
  --gold-darker: #8C702C;
  --gold-glow: rgba(216, 180, 91, 0.22);
  --gold-glow-subtle: rgba(216, 180, 91, 0.10);
  --gold-glow-faint: rgba(216, 180, 91, 0.05);

  /* --- Accent Palette: Emerald Accent (Mastery, Progress, Success) --- */
  --color-success: #28C995;    /* Emerald Accent */
  --color-success-dark: #1FA87B;
  --color-success-bg: rgba(40, 201, 149, 0.10);
  --color-success-border: rgba(40, 201, 149, 0.25);
  --color-success-glow: rgba(40, 201, 149, 0.20);

  /* --- Semantic Warning & Error --- */
  --color-warning: #F59E0B;
  --color-warning-dark: #D97706;
  --color-warning-bg: rgba(245, 158, 11, 0.10);
  --color-warning-border: rgba(245, 158, 11, 0.25);

  --color-error: #EF4444;
  --color-error-dark: #DC2626;
  --color-error-bg: rgba(239, 68, 68, 0.10);
  --color-error-border: rgba(239, 68, 68, 0.25);

  --color-info: #3B82F6;
  --color-info-dark: #2563EB;
  --color-info-bg: rgba(59, 130, 246, 0.10);
  --color-info-border: rgba(59, 130, 246, 0.25);

  /* --- Test Assessment Grade Colors --- */
  --grade-alo: #28C995;
  --grade-alo-glow: rgba(40, 201, 149, 0.25);
  --grade-yaxshi: #3B82F6;
  --grade-yaxshi-glow: rgba(59, 130, 246, 0.25);
  --grade-qoniqarli: #F59E0B;
  --grade-qoniqarli-glow: rgba(245, 158, 11, 0.25);
  --grade-takrorlash: #EF4444;
  --grade-takrorlash-glow: rgba(239, 68, 68, 0.25);

  /* --- CEFR Level Subtle Tones (Refined, never neon) --- */
  --level-a1: #10B981;
  --level-a1-glow: rgba(16, 185, 129, 0.20);
  --level-a2: #06B6D4;
  --level-a2-glow: rgba(6, 182, 212, 0.20);
  --level-b1: #3B82F6;
  --level-b1-glow: rgba(59, 130, 246, 0.20);
  --level-b1plus: #8B5CF6;
  --level-b1plus-glow: rgba(139, 92, 246, 0.20);
  --level-b2: #F59E0B;
  --level-b2-glow: rgba(245, 158, 11, 0.20);
  --level-c1: #EC4899;
  --level-c1-glow: rgba(236, 72, 153, 0.20);
  --level-murphy-red: #EF4444;
  --level-murphy-red-glow: rgba(239, 68, 68, 0.20);
  --level-murphy-blue: #3B82F6;
  --level-murphy-blue-glow: rgba(59, 130, 246, 0.20);
  --level-multilevel: #14B8A6;
  --level-multilevel-glow: rgba(20, 184, 166, 0.20);

  /* --- Typography: Warm Ivory & Muted Silver System --- */
  --text-white: #F4F0E7;       /* Warm Ivory (Primary) */
  --text-light: #C2CAD9;       /* Secondary readable body */
  --text-medium: #929BB0;      /* Muted Silver (Labels, metadata) */
  --text-muted: #5E677F;       /* Tertiary subdued */
  --text-gold: #D8B45B;
  --text-gold-light: #E4C87F;
  --text-gold-dark: #B59341;

  /* --- Backgrounds & Editorial Glass Surfaces --- */
  --card-bg: rgba(21, 27, 45, 0.82);
  --card-bg-solid: #151B2D;
  --card-bg-elevated: #1B233A;
  --card-bg-subtle: rgba(21, 27, 45, 0.55);
  --glass-bg: rgba(16, 22, 42, 0.75);
  --glass-bg-hover: rgba(21, 27, 45, 0.95);
  --overlay-bg: rgba(7, 11, 22, 0.85);
  --modal-overlay-bg: rgba(7, 11, 22, 0.90);

  /* --- Borders & Outlines (Hairline elegance) --- */
  --border-gold: rgba(216, 180, 91, 0.18);
  --border-gold-strong: rgba(216, 180, 91, 0.38);
  --border-gold-light: rgba(228, 200, 127, 0.50);
  --border-navy: rgba(51, 65, 104, 0.40);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-subtle-hover: rgba(255, 255, 255, 0.14);

  /* --- Radii (Border Radius System) --- */
  --radius-xs: 4px;
  --radius-sm: 8px;      /* Inputs, chips */
  --radius-md: 12px;     /* Buttons, action elements */
  --radius-lg: 16px;     /* Cards, containers */
  --radius-xl: 20px;     /* Modals, featured blocks */
  --radius-2xl: 24px;    /* Hero console */
  --radius-full: 9999px; /* Pills, avatars, circular rings */

  /* --- Box Shadows & Glows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.30);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.40);
  --shadow-xl: 0 16px 44px rgba(0, 0, 0, 0.50);
  --shadow-2xl: 0 24px 60px rgba(0, 0, 0, 0.65);
  --shadow-gold-sm: 0 0 14px rgba(216, 180, 91, 0.15);
  --shadow-gold-md: 0 4px 20px rgba(216, 180, 91, 0.22);
  --shadow-gold-lg: 0 8px 32px rgba(216, 180, 91, 0.30);

  /* --- Typography Families & Hierarchy --- */
  --font-main: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

  /* --- Spacing System --- */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */

  /* --- Transitions & Timing (Smooth cubic-bezier) --- */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-flip: 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);

  /* --- Dimensions & Layout Metrics --- */
  --sidebar-width: 270px;
  --sidebar-collapsed-width: 76px;
  --topbar-height: 70px;
  --mobile-header-height: 64px;
  --container-max: 1360px;
  --z-sidebar-overlay: 900;
  --z-sidebar: 950;
  --z-mobile-header: 940;
  --z-topbar: 800;
  --z-dropdown: 1000;
  --z-modal-overlay: 1100;
  --z-modal: 1200;
  --z-toast: 1300;
  --z-tooltip: 1400;
}

/* ====================================================================
   2. CSS RESET, NORMALIZATION & BASE STYLES
   ==================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg-primary-900);
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-light);
  background: radial-gradient(ellipse 90% 60% at 50% -20%, rgba(216, 180, 91, 0.04) 0%, transparent 70%),
              radial-gradient(ellipse 70% 50% at 100% 100%, rgba(40, 201, 149, 0.025) 0%, transparent 60%),
              linear-gradient(180deg, var(--bg-primary-900) 0%, var(--bg-primary-800) 50%, var(--bg-primary-900) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* --- High-end Custom Scrollbars --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary-900);
  border-left: 1px solid rgba(255, 255, 255, 0.03);
}

::-webkit-scrollbar-thumb {
  background: rgba(146, 155, 176, 0.22);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary-900);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(216, 180, 91, 0.4);
}

/* Firefox standard scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(146, 155, 176, 0.22) var(--bg-primary-900);
}

/* --- Selection Highlighting --- */
::selection {
  background: rgba(216, 180, 91, 0.28);
  color: var(--text-white);
}

::-moz-selection {
  background: rgba(216, 180, 91, 0.28);
  color: var(--text-white);
}

/* --- Focus Outline Styling (Accessibility & Elegance) --- */
:focus-visible {
  outline: 2px solid var(--gold-primary);
  outline-offset: 3px;
  border-radius: inherit;
}

/* --- Core Typographic Elements (Plus Jakarta Sans Display) --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-white);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-3);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  letter-spacing: -0.035em;
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-light);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--gold-light);
  text-decoration: none;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
}

a:hover {
  color: var(--gold-bright);
  text-shadow: 0 0 12px var(--gold-glow);
}

b, strong {
  color: var(--text-white);
  font-weight: 600;
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

button, input, optgroup, select, textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1.15;
  margin: 0;
  border: none;
  background: transparent;
  color: inherit;
}

button {
  cursor: pointer;
  user-select: none;
}

/* ====================================================================
   3. APP ARCHITECTURE & CORE LAYOUT
   ==================================================================== */

.app-container {
  display: flex;
  min-height: 100vh;
  width: 100%;
  position: relative;
  background: transparent;
}

.main-content {
  flex: 1 1 auto;
  min-width: 0;
  width: calc(100% - var(--sidebar-width));
  max-width: calc(100% - var(--sidebar-width));
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-base), width var(--transition-base), max-width var(--transition-base);
  position: relative;
  z-index: 10;
}

.app-container.sidebar-collapsed .main-content {
  margin-left: var(--sidebar-collapsed-width);
  width: calc(100% - var(--sidebar-collapsed-width));
  max-width: calc(100% - var(--sidebar-collapsed-width));
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-10);
  padding-right: var(--space-10);
}

.content-body {
  flex: 1 0 auto;
  padding: var(--space-10) 0 var(--space-16);
}

/* --- Layout Grid Utilities --- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* ====================================================================
   4. NAVIGATION & SIDEBAR COMPONENT
   ==================================================================== */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: linear-gradient(180deg, rgba(15, 21, 53, 0.94) 0%, rgba(10, 14, 39, 0.96) 100%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-gold);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--transition-base), transform var(--transition-base);
  box-shadow: 4px 0 25px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, var(--gold-primary) 30%, var(--gold-light) 70%, transparent 100%);
  opacity: 0.3;
  pointer-events: none;
}

/* --- Sidebar Header & Branding --- */
.sidebar-header {
  height: var(--topbar-height);
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  overflow: hidden;
}

.brand-logo-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--gold-lighter) 0%, var(--gold-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(216, 180, 91, 0.4);
  flex-shrink: 0;
  position: relative;
}

.brand-logo-wrap::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, transparent 60%);
  pointer-events: none;
}

.brand-logo-text {
  font-family: var(--font-display, system-ui);
  font-weight: 900;
  font-size: 1.15rem;
  color: #0B1020;
  letter-spacing: 0.05em;
  z-index: 2;
  line-height: 1;
}

.brand-info {
  display: flex;
  flex-direction: column;
  transition: opacity var(--transition-base);
  white-space: nowrap;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-white);
  line-height: 1.15;
}

.brand-title .brand-accent {
  color: var(--gold-primary);
}

.brand-subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-medium);
  font-weight: 600;
  margin-top: 2px;
}

.sidebar-collapse-toggle {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.sidebar-collapse-toggle:hover {
  background: rgba(216, 180, 91, 0.10);
  border-color: var(--gold-primary);
  color: var(--gold-light);
}

.toggle-icon-collapse {
  display: block;
}

.toggle-icon-expand {
  display: none;
}

/* --- Sidebar Navigation Menu --- */
.sidebar-nav {
  flex: 1 1 auto;
  padding: var(--space-4) var(--space-3);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scrollbar-width: thin;
  scrollbar-color: rgba(146, 155, 176, 0.15) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(146, 155, 176, 0.18);
  border-radius: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(216, 180, 91, 0.35);
}

.nav-group-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  font-weight: 700;
  padding: 0 var(--space-3) var(--space-1);
  white-space: nowrap;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0.65rem 0.95rem;
  border-radius: var(--radius-md);
  color: var(--text-light);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.nav-item:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
  color: var(--text-white);
  background: rgba(216, 180, 91, 0.08);
  border-color: rgba(216, 180, 91, 0.25);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 3px;
  border-radius: 0 4px 4px 0;
  background: var(--gold-primary);
  box-shadow: 0 0 10px var(--gold-glow);
}

.nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-medium);
  transition: color 0.18s ease;
}

.nav-item:hover .nav-icon {
  color: var(--text-white);
}

.nav-item.active .nav-icon {
  color: var(--gold-primary);
}

.nav-label {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.nav-badge {
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: rgba(146, 155, 176, 0.08);
  color: var(--text-medium);
  border: 1px solid rgba(146, 155, 176, 0.20);
  font-weight: 500;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

/* --- Sidebar Footer & User Profile --- */
.sidebar-footer {
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid var(--border-subtle);
  background: rgba(11, 16, 32, 0.85);
  flex-shrink: 0;
}

.user-snippet {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.user-snippet:hover {
  background: rgba(255, 255, 255, 0.05);
}

.avatar-wrapper {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--gold-primary);
  box-shadow: 0 0 12px var(--gold-glow);
  flex-shrink: 0;
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--bg-secondary-600) 0%, var(--bg-primary-600) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  font-weight: 700;
  font-size: 0.9rem;
}

.avatar-status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  background-color: var(--color-success);
  border: 2px solid var(--bg-primary-800);
  border-radius: var(--radius-full);
}

.user-details {
  flex: 1 1 auto;
  overflow: hidden;
  white-space: nowrap;
}

.user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.2;
}

.user-role {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
}

.user-settings-icon {
  color: var(--text-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  transition: color var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
}

.user-snippet:hover .user-settings-icon {
  color: var(--gold-light);
  transform: rotate(45deg);
}

/* --- Collapsed State for Sidebar --- */
.app-container.sidebar-collapsed .sidebar {
  width: var(--sidebar-collapsed-width);
}

.app-container.sidebar-collapsed .brand-info,
.app-container.sidebar-collapsed .nav-group-title,
.app-container.sidebar-collapsed .nav-label,
.app-container.sidebar-collapsed .nav-badge,
.app-container.sidebar-collapsed .user-details,
.app-container.sidebar-collapsed .user-settings-icon {
  display: none !important;
}

.app-container.sidebar-collapsed .sidebar-header {
  padding: 0 var(--space-2);
  justify-content: space-around;
  gap: var(--space-2);
}

.app-container.sidebar-collapsed .brand-link {
  justify-content: center;
}

.app-container.sidebar-collapsed .sidebar-collapse-toggle {
  display: flex !important;
}

.app-container.sidebar-collapsed .toggle-icon-collapse {
  display: none !important;
}

.app-container.sidebar-collapsed .toggle-icon-expand {
  display: block !important;
}

.app-container.sidebar-collapsed .nav-item {
  justify-content: center;
  padding: 0.75rem 0;
  gap: 0;
  transform: none;
}

.app-container.sidebar-collapsed .nav-item:hover {
  transform: scale(1.1);
}

.app-container.sidebar-collapsed .user-snippet {
  justify-content: center;
  padding: var(--space-2) 0;
}

/* --- Mobile Header & Backdrop --- */
.mobile-header {
  display: none;
  height: var(--mobile-header-height);
  background: rgba(15, 21, 53, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-gold);
  padding: 0 var(--space-5);
  position: sticky;
  top: 0;
  z-index: var(--z-mobile-header);
  align-items: center;
  justify-content: space-between;
}

.hamburger-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hamburger-btn:hover {
  background: rgba(216, 180, 91, 0.15);
  border-color: var(--gold-primary);
}

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--text-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger-btn.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--gold-light);
}

.hamburger-btn.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--gold-light);
}

.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-sidebar-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.sidebar-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ====================================================================
   5. TOPBAR & DESKTOP HEADER NAVIGATION
   ==================================================================== */

.topbar {
  height: var(--topbar-height);
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 14, 39, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.breadcrumbs {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-medium);
  padding: 8px 18px;
  background: rgba(26, 31, 58, 0.75);
  border: 1px solid rgba(216, 180, 91, 0.22);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  margin-bottom: var(--space-6);
  transition: all var(--transition-base);
}

.breadcrumbs:hover {
  border-color: rgba(216, 180, 91, 0.45);
  background: rgba(26, 31, 58, 0.9);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4), 0 0 15px rgba(216, 180, 91, 0.15);
}

.breadcrumbs a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.breadcrumbs a:hover {
  color: var(--gold-bright);
}

.breadcrumb-separator {
  color: var(--gold-primary);
  font-size: 0.75rem;
  opacity: 0.6;
  margin: 0 2px;
}

.breadcrumb-current {
  color: var(--gold-light);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar-context-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(26, 31, 58, 0.7);
  border: 1px solid rgba(216, 180, 91, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--text-light);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.topbar-context-pill .context-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-primary);
  box-shadow: 0 0 8px var(--gold-glow);
  display: inline-block;
}

.topbar-center {
  flex: 1;
  max-width: 480px;
  margin: 0 var(--space-6);
}

.search-bar {
  position: relative;
  width: 100%;
  cursor: pointer;
}

.search-input {
  width: 100%;
  height: 40px;
  padding: 0 5rem 0 2.5rem;
  background: rgba(26, 31, 58, 0.7);
  border: 1px solid rgba(216, 180, 91, 0.2);
  border-radius: var(--radius-full);
  color: var(--text-white);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.search-bar:hover .search-input {
  border-color: rgba(216, 180, 91, 0.45);
  background: rgba(26, 31, 58, 0.9);
  box-shadow: 0 0 15px rgba(216, 180, 91, 0.15);
}

.search-kbd-hint {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(10, 14, 39, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  font-size: 0.7rem;
  padding: 2px 7px;
  color: var(--text-medium);
  font-family: var(--font-mono);
  pointer-events: none;
}

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-medium);
  pointer-events: none;
}

.topbar-pill-stat {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  background: rgba(26, 31, 58, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--text-light);
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: default;
}

.topbar-pill-stat:hover {
  border-color: rgba(216, 180, 91, 0.35);
  background: rgba(26, 31, 58, 0.9);
}

.topbar-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(26, 31, 58, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.topbar-icon-btn:hover {
  border-color: var(--gold-primary);
  color: var(--gold-bright);
  background: rgba(26, 31, 58, 0.95);
  box-shadow: 0 0 12px var(--gold-glow);
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--color-error);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #0B1020;
}

.notifications-dropdown {
  position: absolute;
  top: 48px;
  right: 0;
  width: 330px;
  background: rgba(20, 26, 56, 0.96);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl), 0 0 25px rgba(216, 180, 91, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1050;
  overflow: hidden;
  animation: scaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.notif-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.notif-header h4 {
  font-size: var(--font-size-sm);
  color: var(--text-white);
  margin: 0;
}

.notif-count {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: rgba(216, 180, 91, 0.15);
  border-radius: var(--radius-full);
  color: var(--gold-light);
  font-weight: 600;
}

.notif-list {
  max-height: 320px;
  overflow-y: auto;
}

.notif-item {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  transition: background var(--transition-fast);
}

.notif-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.notif-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.notif-title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 2px;
}

.notif-text {
  font-size: 0.78rem;
  color: var(--text-medium);
  line-height: 1.4;
  margin: 0;
}

/* ====================================================================
   6. DASHBOARD & HOME SECTION
   ==================================================================== */

.hero-section {
  position: relative;
  border-radius: var(--radius-2xl);
  padding: 36px 40px;
  background: linear-gradient(135deg, rgba(21, 27, 45, 0.95) 0%, rgba(16, 22, 42, 0.98) 100%);
  border: 1px solid rgba(216, 180, 91, 0.16);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  margin-bottom: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-8);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 180, 91, 0.08) 0%, transparent 70%);
  filter: blur(50px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  flex: 1 1 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: rgba(40, 201, 149, 0.08);
  border: 1px solid rgba(40, 201, 149, 0.22);
  border-radius: var(--radius-full);
  color: var(--color-success);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success-glow);
}

.hero-title {
  font-family: var(--font-display);
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: var(--space-3);
  color: var(--text-white);
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 0.98rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: var(--space-5);
  max-width: 680px;
}

.hero-mission-banner {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: rgba(216, 180, 91, 0.07);
  border: 1px solid rgba(216, 180, 91, 0.20);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  font-size: 0.84rem;
  color: var(--gold-light);
  max-width: 100%;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-graphic {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Editorial Progression Console (Right Hero Box) --- */
.hero-progress-console {
  background: rgba(16, 22, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  min-width: 290px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.console-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 10px;
}

.console-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-medium);
  font-weight: 700;
}

.console-badge {
  font-size: 0.70rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(216, 180, 91, 0.12);
  color: var(--gold-light);
  border: 1px solid rgba(216, 180, 91, 0.25);
  font-weight: 600;
}

.console-metrics-row {
  display: flex;
  gap: 8px;
  width: 100%;
  justify-content: center;
}

.console-metric-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  flex: 1;
}

.console-metric-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-white);
  line-height: 1.2;
}

.console-metric-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 2px;
}

/* --- Stats Grid & Premium Stat Cards --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.stat-card {
  position: relative;
  background: var(--card-bg-solid);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: rgba(216, 180, 91, 0.28);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.38);
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.stat-icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.stat-card:hover .stat-icon-wrapper {
  transform: scale(1.05);
}

.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.15;
  margin-bottom: 2px;
  letter-spacing: -0.02em;
}

.stat-value-sub {
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-medium);
  letter-spacing: normal;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-medium);
  font-weight: 500;
  line-height: 1.3;
}

/* Unique Card Micro-Visualizers */
.stat-micro-track {
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  margin-top: 10px;
  overflow: hidden;
  position: relative;
}

.stat-micro-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s ease;
}

.stat-segmented-track {
  display: flex;
  gap: 3px;
  width: 100%;
  margin-top: 10px;
}

.stat-segment-dash {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease;
}

.stat-segment-dash.active {
  background: #3B82F6;
  box-shadow: 0 0 6px rgba(59, 130, 246, 0.4);
}

.stat-week-dots {
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 10px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-day-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-day-label {
  font-size: 0.62rem;
  color: var(--text-muted);
}

.stat-day-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.stat-day-dot.active {
  background: #FF6B4A;
  box-shadow: 0 0 8px rgba(255, 107, 74, 0.5);
}

.stat-day-dot.today-ring {
  box-shadow: 0 0 0 2px var(--gold-primary);
}

/* --- Circular Progress Ring Component --- */
.progress-ring-container {
  position: relative;
  width: 140px;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-ring-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.progress-ring-circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 8;
}

.progress-ring-circle-fill {
  fill: none;
  stroke: url(#goldGradient);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease-in-out;
}

.progress-ring-text-wrap {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.progress-ring-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
}

.progress-ring-label {
  font-size: 0.68rem;
  color: var(--gold-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* --- Quick Actions Grid --- */
.quick-actions-section {
  margin-bottom: var(--space-8);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 1.1em;
  background: var(--gold-primary);
  border-radius: var(--radius-xs);
  box-shadow: 0 0 8px var(--gold-glow);
}

.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.action-card {
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.action-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  background: var(--card-bg-elevated);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(216, 180, 91, 0.15);
}

.action-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(216, 180, 91, 0.12);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  transition: all var(--transition-fast);
}

.action-card:hover .action-card-icon {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
  box-shadow: 0 4px 12px var(--gold-glow);
}

.action-card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: var(--space-1);
}

.action-card-desc {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  line-height: 1.4;
}

/* --- Recent Activity Section --- */
.recent-activity-section {
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.activity-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(15, 21, 53, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: all var(--transition-fast);
}

.activity-item:hover {
  background: rgba(30, 36, 70, 0.7);
  border-color: var(--border-gold);
}

.activity-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.activity-icon-badge {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.activity-icon-badge.type-learned {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.activity-icon-badge.type-tested {
  background: rgba(216, 180, 91, 0.15);
  color: var(--gold-bright);
  border: 1px solid var(--border-gold);
}

.activity-icon-badge.type-streak {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid var(--color-warning-border);
}

.activity-info-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 2px;
}

.activity-info-meta {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
}

.activity-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.activity-score {
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--gold-light);
}

.activity-time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}


/* ====================================================================
   7. DICTIONARY & CEFR BOOKS SECTION
   ==================================================================== */

.dictionary-section {
  margin-bottom: var(--space-12);
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.book-card {
  position: relative;
  background: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 270px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  overflow: hidden;
  cursor: pointer;
}

.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, var(--gold-glow-subtle) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.book-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-xl), 0 0 25px rgba(216, 180, 91, 0.18);
}

.book-card:hover::before {
  opacity: 1;
}

/* --- Book Card Header & Level Badges --- */
.book-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 2;
}

.book-cover-art {
  width: 58px;
  height: 72px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--bg-secondary-600) 0%, var(--bg-secondary-800) 100%);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.book-cover-art::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: rgba(216, 180, 91, 0.4);
  border-right: 1px solid rgba(0, 0, 0, 0.3);
}

.book-cover-icon {
  width: 28px;
  height: 28px;
  color: var(--gold-light);
}

/* --- Distinct Level Badges for A1 - C1 --- */
.level-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.28rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: var(--shadow-sm);
}

.level-badge.level-a1 {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 12px var(--level-a1-glow);
}

.level-badge.level-a2 {
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.4);
  box-shadow: 0 0 12px var(--level-a2-glow);
}

.level-badge.level-b1 {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.4);
  box-shadow: 0 0 12px var(--level-b1-glow);
}

.level-badge.level-b1plus {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.4);
  box-shadow: 0 0 12px var(--level-b1plus-glow);
}

.level-badge.level-b2 {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
  box-shadow: 0 0 12px var(--level-b2-glow);
}

.level-badge.level-c1 {
  background: rgba(236, 72, 153, 0.15);
  color: #f472b6;
  border: 1px solid rgba(236, 72, 153, 0.4);
  box-shadow: 0 0 12px var(--level-c1-glow);
}

.level-badge.level-murphy-red {
  background: rgba(239, 68, 68, 0.18);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.45);
  box-shadow: 0 0 12px var(--level-murphy-red-glow);
}

.level-badge.level-murphy-blue {
  background: rgba(59, 130, 246, 0.18);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.45);
  box-shadow: 0 0 12px var(--level-murphy-blue-glow);
}

.level-badge.level-multilevel {
  background: rgba(20, 184, 166, 0.18);
  color: #2dd4bf;
  border: 1px solid rgba(20, 184, 166, 0.45);
  box-shadow: 0 0 12px var(--level-multilevel-glow);
}

.level-badge.level-grammar-uz {
  background: rgba(16, 185, 129, 0.18);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.45);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.35);
}

/* --- Book Details & Status States --- */
.book-info {
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 2;
}

.book-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: var(--space-1);
}

.book-desc {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}

.book-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

.book-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.book-progress-wrapper {
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.book-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  margin-bottom: var(--space-2);
}

.book-progress-label {
  color: var(--text-medium);
}

.book-progress-percent {
  color: var(--gold-light);
  font-weight: 700;
}

/* --- Book Card State Variants --- */
.book-card.in-progress {
  border-color: rgba(216, 180, 91, 0.35);
}

.book-card.completed {
  border-color: rgba(40, 201, 149, 0.35);
}

.book-card.completed::after {
  content: '✓ TUGATILGAN';
  position: absolute;
  top: 18px;
  right: -32px;
  transform: rotate(45deg);
  background: var(--color-success);
  color: #070a1c;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 3px 36px;
  letter-spacing: 0.08em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

.book-card.locked {
  filter: grayscale(0.7);
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: auto;
}

.book-card.locked:hover {
  transform: none;
  box-shadow: var(--shadow-md);
  border-color: var(--border-navy);
}

.book-lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 39, 0.7);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  z-index: 10;
}

.lock-icon {
  width: 32px;
  height: 32px;
  color: var(--text-medium);
}

.lock-text {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  font-weight: 600;
}

/* --- Units List Section --- */
.units-section {
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-12);
}

.units-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.units-filter-tabs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(15, 21, 53, 0.6);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.unit-tab-btn {
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-medium);
  transition: all var(--transition-fast);
}

.unit-tab-btn:hover {
  color: var(--text-white);
}

.unit-tab-btn.active {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
  box-shadow: 0 2px 10px var(--gold-glow);
}

.units-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

@media screen and (max-width: 1100px) {
  .units-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.unit-card {
  position: relative;
  background: rgba(19, 26, 62, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  transition: all var(--transition-base);
  cursor: pointer;
  min-width: 0;
  width: 100%;
}

.unit-card:hover {
  background: rgba(26, 31, 58, 0.95);
  border-color: var(--border-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 16px rgba(216, 180, 91, 0.1);
}

.unit-card-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
  flex: 1 1 auto;
}

.unit-number-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(216, 180, 91, 0.1);
  border: 1px solid rgba(216, 180, 91, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.unit-number-title {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--gold-light);
  font-weight: 700;
  line-height: 1;
}

.unit-number-val {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
}

.unit-card:hover .unit-number-badge {
  background: var(--gold-primary);
  border-color: var(--gold-lighter);
}

.unit-card:hover .unit-number-title,
.unit-card:hover .unit-number-val {
  color: var(--bg-primary-900);
}

.unit-details {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
}

.unit-name-en {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 2px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

.unit-name-uz {
  font-size: 0.8rem;
  color: var(--gold-light);
  margin-bottom: 4px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
  opacity: 0.9;
}

.unit-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.75rem;
  color: var(--text-light);
}

.unit-progress-bar-wrap {
  width: 100px;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.unit-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-light) 0%, var(--gold-primary) 100%);
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

.unit-card-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Status variants for unit card */
.unit-card.completed .unit-number-badge {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
}

.unit-card.completed .unit-number-title,
.unit-card.completed .unit-number-val {
  color: var(--color-success);
}

.unit-card.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.unit-card.locked:hover {
  transform: none;
  border-color: rgba(255, 255, 255, 0.06);
  background: rgba(19, 26, 62, 0.65);
}

/* ====================================================================
   8. LEARNING CARDS (FLASHCARDS 3D ENGINE)
   ==================================================================== */

.flashcard-section {
  max-width: 680px;
  margin: 0 auto var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
}

.flashcard-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-2);
}

.flashcard-counter {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--gold-light);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.flashcard-counter-badge {
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid var(--border-gold);
  font-size: var(--font-size-xs);
  color: var(--gold-bright);
}

.flashcard-progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.flashcard-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-primary) 0%, var(--gold-bright) 100%);
  box-shadow: 0 0 10px var(--gold-glow);
  transition: width 0.4s ease;
}

/* --- 3D Card Stage --- */
.flashcard-container {
  width: 100%;
  max-width: 640px;
  height: 520px;
  min-height: 520px;
  perspective: 1200px;
  margin: 0 auto;
  position: relative;
}

.flashcard {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform var(--transition-flip);
  cursor: pointer;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-2xl);
  background: linear-gradient(150deg, #182038 0%, #10162A 100%);
  border: 1px solid rgba(216, 180, 91, 0.28);
  padding: 22px 28px 18px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  box-sizing: border-box;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 48px rgba(0, 0, 0, 0.6);
}

.flashcard-front {
  z-index: 2;
  pointer-events: auto;
}

.flashcard-back {
  z-index: 1;
  pointer-events: none;
  transform: rotateY(180deg);
  background: linear-gradient(145deg, #141C34 0%, #0D1324 100%);
  border-color: rgba(216, 180, 91, 0.28);
}

.flashcard.flipped .flashcard-front {
  z-index: 1;
  pointer-events: none;
}

.flashcard.flipped .flashcard-back {
  z-index: 2;
  pointer-events: auto;
}

.flashcard-card-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flashcard-tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--text-medium);
}

.flip-hint-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: var(--gold-light);
  background: rgba(216, 180, 91, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(216, 180, 91, 0.2);
}

.flashcard-main-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 0;
  gap: 8px;
  width: 100%;
  min-height: 0;
}

.word-english {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-2);
}

.word-pronunciation {
  position: relative;
  z-index: 10;
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--gold-light);
  background: rgba(216, 180, 91, 0.08);
  border: 1px solid rgba(216, 180, 91, 0.22);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.word-pronunciation:hover {
  background: rgba(216, 180, 91, 0.16);
  border-color: var(--gold-primary);
  transform: scale(1.03);
}

.word-pronunciation.audio-playing-pulse,
.audio-playing-pulse {
  animation: audioPulseAnim 0.6s ease infinite alternate;
  background: rgba(216, 180, 91, 0.25) !important;
  color: #ffffff !important;
}

@keyframes audioPulseAnim {
  0% { transform: scale(1); box-shadow: 0 0 0 rgba(216, 180, 91, 0); }
  100% { transform: scale(1.05); box-shadow: 0 0 12px rgba(216, 180, 91, 0.4); }
}

.audio-btn-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.word-part-of-speech {
  font-size: var(--font-size-xs);
  font-style: italic;
  color: var(--text-medium);
  margin-bottom: var(--space-4);
}

.word-back-english {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-1);
}

.word-uzbek {
  font-family: var(--font-display);
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--gold-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.word-uzbek-card-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(10, 16, 32, 0.75);
  border: 1px solid rgba(216, 180, 91, 0.25);
  padding: 6px 18px;
  border-radius: 999px;
  margin: 0 0 4px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.word-uzbek-badge-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #D8B45B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.word-uzbek-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: #F8FAFC;
}

.card-tap-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  pointer-events: none;
  user-select: none;
  margin-top: auto;
  padding-top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0.85;
}

.word-example-wrapper {
  max-width: 90%;
  background: rgba(11, 16, 32, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--gold-primary);
  padding: 12px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  text-align: left;
  margin-top: 10px;
}

.word-example {
  font-size: 0.94rem;
  color: var(--text-white);
  font-style: italic;
  line-height: 1.55;
  margin-bottom: 4px;
}

.word-example-translation {
  font-size: 0.84rem;
  color: var(--text-medium);
  line-height: 1.45;
}

/* --- Card Controls & Navigation --- */
.flashcard-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.learning-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.control-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  min-width: 150px;
  justify-content: center;
}

.control-btn.btn-dont-know {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.30);
  color: #F87171;
}

.control-btn.btn-dont-know:hover {
  background: var(--color-error);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.35);
  transform: translateY(-2px);
}

.control-btn.btn-know {
  background: rgba(40, 201, 149, 0.12);
  border: 1px solid rgba(40, 201, 149, 0.35);
  color: #28C995;
  font-weight: 700;
}

.control-btn.btn-know:hover {
  background: #28C995;
  color: #070B16;
  box-shadow: 0 4px 18px rgba(40, 201, 149, 0.35);
  transform: translateY(-2px);
}

/* --- Word List View (Alternative Mode) --- */
.word-list-view {
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.word-list-header {
  padding: var(--space-4) var(--space-6);
  background: rgba(15, 21, 53, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: grid;
  grid-template-columns: 80px 1.5fr 1.5fr 2fr 100px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-medium);
}

.word-list-row {
  padding: var(--space-4) var(--space-6);
  display: grid;
  grid-template-columns: 80px 1.5fr 1.5fr 2fr 100px;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background var(--transition-fast);
}

.word-list-row:hover {
  background: rgba(30, 36, 70, 0.6);
}

.word-col-audio-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: rgba(216, 180, 91, 0.12);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.word-col-audio-btn:hover {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
}

/* ====================================================================
   9. INTERACTIVE EXERCISES & QUIZZES
   ==================================================================== */

.exercise-container {
  max-width: 820px;
  margin: 0 auto var(--space-12);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.exercise-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.exercise-type-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.85rem;
  background: rgba(216, 180, 91, 0.12);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--gold-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.exercise-timer {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(15, 21, 53, 0.7);
  border: 1px solid var(--border-navy);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-white);
}

.exercise-timer.warning {
  border-color: var(--color-warning);
  color: var(--color-warning);
  animation: pulse 1s infinite alternate;
}

.exercise-timer.critical {
  border-color: var(--color-error);
  color: var(--color-error);
  animation: shake 0.5s infinite;
}

.exercise-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.exercise-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-primary) 0%, var(--gold-bright) 100%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px var(--gold-glow);
  transition: width 0.35s ease;
}

/* --- Exercise Question Layout --- */
.exercise-question-box {
  background: rgba(15, 21, 53, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  margin-bottom: var(--space-8);
}

.exercise-question-title {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-medium);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.exercise-question {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.35;
}

.exercise-question-audio {
  margin-top: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gold-light);
  font-size: var(--font-size-sm);
  cursor: pointer;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  background: rgba(216, 180, 91, 0.1);
  transition: all var(--transition-fast);
}

.exercise-question-audio:hover {
  background: rgba(216, 180, 91, 0.22);
}

/* --- Options Grid (2x2 Multi-choice) --- */
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: rgba(19, 26, 62, 0.7);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-md);
  color: var(--text-white);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: left;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.option-key-badge {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--text-light);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.option-text {
  flex: 1 1 auto;
}

.option-btn:hover:not(.disabled) {
  border-color: var(--gold-primary);
  background: rgba(26, 31, 58, 0.95);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 16px rgba(216, 180, 91, 0.15);
}

.option-btn:hover:not(.disabled) .option-key-badge {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
  border-color: var(--gold-primary);
}

.option-btn.selected {
  border-color: var(--gold-light);
  background: rgba(216, 180, 91, 0.18);
  box-shadow: 0 0 16px var(--gold-glow);
}

.option-btn.selected .option-key-badge {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
}

.option-btn.correct {
  border-color: var(--color-success) !important;
  background: var(--color-success-bg) !important;
  color: var(--text-white) !important;
  box-shadow: 0 0 20px rgba(40, 201, 149, 0.35) !important;
}

.option-btn.correct .option-key-badge {
  background: var(--color-success) !important;
  color: #070a1c !important;
  border-color: var(--color-success) !important;
}

.option-btn.incorrect {
  border-color: var(--color-error) !important;
  background: var(--color-error-bg) !important;
  color: var(--text-white) !important;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.35) !important;
  animation: shake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.option-btn.incorrect .option-key-badge {
  background: var(--color-error) !important;
  color: var(--text-white) !important;
  border-color: var(--color-error) !important;
}

/* --- Matching Exercise (Drag & Drop or Tap Pairing) --- */
.matching-exercise {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.matching-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.matching-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: rgba(19, 26, 62, 0.7);
  border: 1px solid var(--border-navy);
  color: var(--text-white);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.matching-card:hover {
  border-color: var(--gold-primary);
  background: rgba(26, 31, 58, 0.9);
}

.matching-card.selected {
  border-color: var(--gold-light);
  background: rgba(216, 180, 91, 0.2);
  box-shadow: 0 0 14px var(--gold-glow);
}

.matching-card.matched {
  border-color: var(--color-success);
  background: var(--color-success-bg);
  color: var(--color-success);
  cursor: default;
  opacity: 0.6;
}

/* --- Fill in the Blank Exercise --- */
.fill-blank-exercise {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.fill-sentence {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.8;
  text-align: center;
}

.fill-input-blank {
  display: inline-block;
  min-width: 140px;
  border-bottom: 2px solid var(--gold-primary);
  background: rgba(255, 255, 255, 0.05);
  color: var(--gold-bright);
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-xs);
  text-align: center;
  outline: none;
  transition: all var(--transition-fast);
}

.fill-input-blank:focus {
  background: rgba(216, 180, 91, 0.15);
  border-bottom-color: var(--gold-bright);
  box-shadow: 0 2px 10px var(--gold-glow);
}

.word-bank-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.word-chip {
  padding: 0.45rem 1rem;
  background: rgba(26, 31, 58, 0.85);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.word-chip:hover {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
  transform: translateY(-2px);
}

.word-chip.used {
  opacity: 0.35;
  pointer-events: none;
}

/* --- Feedback Panel (Slide up on answer) --- */
.exercise-feedback {
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-4);
  animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.exercise-feedback.correct {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
}

.exercise-feedback.incorrect {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
}

.feedback-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.feedback-icon-badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.exercise-feedback.correct .feedback-icon-badge {
  background: var(--color-success);
  color: #070a1c;
}

.exercise-feedback.incorrect .feedback-icon-badge {
  background: var(--color-error);
  color: #ffffff;
}

.feedback-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 2px;
}

.exercise-feedback.correct .feedback-title {
  color: var(--color-success);
}

.exercise-feedback.incorrect .feedback-title {
  color: #ff7675;
}

.feedback-message {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}


/* ====================================================================
   10. TEST & EXAMINATION ENVIRONMENT
   ==================================================================== */

.test-container {
  max-width: 900px;
  margin: 0 auto var(--space-12);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-2xl);
  position: relative;
}

.test-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold-dark) 0%, var(--gold-lighter) 50%, var(--gold-dark) 100%);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.test-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.test-title-info {
  display: flex;
  flex-direction: column;
}

.test-badge-type {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold-primary);
  font-weight: 700;
}

.test-title-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--text-white);
}

.test-header-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.test-timer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(10, 14, 39, 0.85);
  border: 1px solid var(--border-gold);
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 700;
  box-shadow: 0 0 14px var(--gold-glow);
}

.test-timer-icon {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Question Palette Strip */
.question-palette {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.palette-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(19, 26, 62, 0.7);
  border: 1px solid var(--border-navy);
  color: var(--text-medium);
  font-size: var(--font-size-xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.palette-btn:hover {
  border-color: var(--gold-primary);
  color: var(--text-white);
}

.palette-btn.current {
  background: var(--gold-primary);
  color: var(--bg-primary-900);
  border-color: var(--gold-lighter);
  box-shadow: 0 0 10px var(--gold-glow);
}

.palette-btn.answered {
  background: rgba(40, 201, 149, 0.2);
  border-color: rgba(40, 201, 149, 0.5);
  color: var(--color-success);
}

.palette-btn.flagged {
  background: rgba(243, 156, 18, 0.2);
  border-color: rgba(243, 156, 18, 0.5);
  color: var(--color-warning);
}

/* Question Body */
.test-question-box {
  background: rgba(15, 21, 53, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.test-question-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.question-index-tag {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--gold-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.question-points-tag {
  font-size: 0.75rem;
  color: var(--text-medium);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-xs);
}

.test-question {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.45;
}

/* Options */
.test-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.test-option-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: rgba(19, 26, 62, 0.6);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-md);
  color: var(--text-white);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.test-option-item:hover {
  background: rgba(26, 31, 58, 0.9);
  border-color: var(--border-gold);
}

.test-option-item.selected {
  background: rgba(216, 180, 91, 0.16);
  border-color: var(--gold-primary);
  box-shadow: 0 0 15px var(--gold-glow);
}

.test-option-radio {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  border: 2px solid var(--text-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.test-option-item.selected .test-option-radio {
  border-color: var(--gold-primary);
}

.test-option-radio-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--gold-primary);
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition-fast);
}

.test-option-item.selected .test-option-radio-dot {
  opacity: 1;
  transform: scale(1);
}

.test-option-label {
  flex: 1 1 auto;
  font-weight: 500;
}

/* Navigation controls */
.test-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ====================================================================
   11. RESULTS & PERFORMANCE ANALYTICS
   ==================================================================== */

.results-container {
  max-width: 860px;
  margin: 0 auto var(--space-12);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-2xl);
  padding: var(--space-10) var(--space-8);
  box-shadow: var(--shadow-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.results-container::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 320px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  filter: blur(50px);
  pointer-events: none;
}

.results-badge-ribbon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 1rem;
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid var(--border-gold-strong);
  border-radius: var(--radius-full);
  color: var(--gold-bright);
  font-size: var(--font-size-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.results-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: var(--space-6);
}

/* Big Score Circle Display */
.results-score-display {
  position: relative;
  width: 190px;
  height: 190px;
  margin: 0 auto var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
}

.results-score-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.results-score-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 12;
}

.results-score-fill {
  fill: none;
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.results-score-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.results-score-number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-white);
  line-height: 1;
}

.results-score-total {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Assessment Grade Badges with exact colors */
.results-grade {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
  padding: 0.4rem 1.8rem;
  border-radius: var(--radius-full);
}

.results-grade.grade-alo {
  color: var(--grade-alo);
  background: rgba(40, 201, 149, 0.15);
  border: 1px solid var(--grade-alo);
  box-shadow: 0 0 20px var(--grade-alo-glow);
}

.results-grade.grade-yaxshi {
  color: var(--grade-yaxshi);
  background: rgba(39, 174, 96, 0.15);
  border: 1px solid var(--grade-yaxshi);
  box-shadow: 0 0 20px var(--grade-yaxshi-glow);
}

.results-grade.grade-qoniqarli {
  color: var(--grade-qoniqarli);
  background: rgba(243, 156, 18, 0.15);
  border: 1px solid var(--grade-qoniqarli);
  box-shadow: 0 0 20px var(--grade-qoniqarli-glow);
}

.results-grade.grade-takrorlash {
  color: var(--grade-takrorlash);
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid var(--grade-takrorlash);
  box-shadow: 0 0 20px var(--grade-takrorlash-glow);
}

/* Results Stats Grid */
.results-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.results-stat-box {
  background: rgba(15, 21, 53, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.results-stat-val {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 4px;
}

.results-stat-val.val-correct {
  color: var(--color-success);
}

.results-stat-val.val-incorrect {
  color: var(--color-error);
}

.results-stat-val.val-time {
  color: var(--gold-light);
}

.results-stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Expandable Wrong Answers Review */
.results-details {
  background: rgba(15, 21, 53, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-8);
  text-align: left;
}

.results-details-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.results-details-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.results-error-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.results-error-item {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.08);
  border-left: 3px solid var(--color-error);
  margin-bottom: 10px;
}

.error-item-type-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gold-light);
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid rgba(216, 180, 91, 0.25);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 4px;
}

.error-item-q {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 4px;
}

.error-item-hint {
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
  margin-bottom: 6px;
}

#btn-test-confirm.btn-active-confirm {
  box-shadow: 0 4px 16px rgba(216, 180, 91, 0.4);
}

.error-item-answers {
  display: flex;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
}

.error-user-ans {
  color: #ff7675;
}

.error-correct-ans {
  color: #28C995;
  font-weight: 600;
}

/* Action Buttons */
.results-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ====================================================================
   12. MODALS & POPUP DIALOGS
   ==================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.show,
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: linear-gradient(145deg, #1e2446 0%, #101535 100%);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl), 0 0 35px rgba(216, 180, 91, 0.15);
  width: 100%;
  max-width: 580px;
  position: relative;
  z-index: var(--z-modal);
  transform: scale(0.92) translateY(20px);
  opacity: 0;
  transition: transform var(--transition-spring), opacity var(--transition-base);
  overflow: hidden;
}

.modal-overlay.show .modal-content,
.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0;
}

.modal-close-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.modal-close-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
  border-color: rgba(239, 68, 68, 0.4);
}

.modal-body {
  padding: var(--space-6);
  max-height: calc(85vh - 140px);
  overflow-y: auto;
  color: var(--text-light);
  line-height: 1.6;
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  background: rgba(10, 14, 39, 0.4);
}

/* ====================================================================
   13. TOAST & NOTIFICATION SYSTEM
   ==================================================================== */

.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 400px;
  width: 100%;
  pointer-events: none;
}

.toast {
  position: relative;
  background: rgba(26, 31, 58, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  pointer-events: auto;
  overflow: hidden;
  transition: all var(--transition-base);
}

.toast.toast-enter {
  animation: slideLeft 0.35s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast.toast-exit {
  animation: slideRight 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
}

.toast-success::before {
  background: var(--color-success);
  box-shadow: 0 0 10px var(--color-success);
}

.toast-error::before {
  background: var(--color-error);
  box-shadow: 0 0 10px var(--color-error);
}

.toast-warning::before {
  background: var(--color-warning);
  box-shadow: 0 0 10px var(--color-warning);
}

.toast-info::before {
  background: var(--color-info);
  box-shadow: 0 0 10px var(--color-info);
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info .toast-icon { color: var(--color-info); }

.toast-content {
  flex: 1 1 auto;
  min-width: 0;
}

.toast-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 2px;
}

.toast-message {
  font-size: var(--font-size-xs);
  color: var(--text-light);
  line-height: 1.4;
}

.toast-close {
  background: transparent;
  color: var(--text-medium);
  font-size: 1.1rem;
  padding: 0;
  line-height: 1;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--text-white);
}

/* ====================================================================
   14. LUXURY BUTTONS & INTERACTIVE CONTROLS
   ==================================================================== */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none !important;
  transform: none !important;
}

/* Primary Gold Luxury Button */
.btn-primary {
  background: linear-gradient(135deg, var(--gold-lighter) 0%, var(--gold-primary) 60%, var(--gold-dark) 100%);
  color: #070a1c;
  font-weight: 700;
  border: 1px solid var(--gold-light);
  box-shadow: 0 4px 15px rgba(216, 180, 91, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #f7df9e 0%, var(--gold-lighter) 50%, var(--gold-primary) 100%);
  box-shadow: 0 6px 22px rgba(216, 180, 91, 0.55);
  transform: translateY(-2px);
  color: #040612;
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Transparent Button with Gold Border */
.btn-secondary {
  background: rgba(26, 31, 58, 0.5);
  color: var(--text-white);
  border: 1px solid var(--border-gold-strong);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: rgba(216, 180, 91, 0.15);
  border-color: var(--gold-light);
  color: var(--gold-bright);
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgba(216, 180, 91, 0.2);
}

/* Success Button */
.btn-success {
  background: linear-gradient(135deg, #34d399 0%, var(--color-success) 60%, var(--color-success-dark) 100%);
  color: #070a1c;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(40, 201, 149, 0.3);
}

.btn-success:hover {
  box-shadow: 0 6px 20px rgba(40, 201, 149, 0.5);
  transform: translateY(-2px);
}

/* Danger Button */
.btn-danger {
  background: linear-gradient(135deg, #ff7675 0%, var(--color-error) 60%, var(--color-error-dark) 100%);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
  transform: translateY(-2px);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--text-light);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-white);
}

/* Sizing Modifiers */
.btn-sm {
  padding: 0.4rem 0.9rem;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 2rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}

.btn-xl {
  padding: 1.1rem 2.5rem;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Icon-only Button */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon.circle {
  border-radius: var(--radius-full);
}

/* Button Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: rippleAnimation 0.6s linear;
  background-color: rgba(255, 255, 255, 0.3);
  pointer-events: none;
}

@keyframes rippleAnimation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ====================================================================
   15. FORM CONTROLS & INPUT SYSTEM
   ==================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-white);
}

.form-control {
  width: 100%;
  height: 44px;
  padding: 0 var(--space-4);
  background: rgba(15, 21, 53, 0.7);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.form-control:focus {
  background: rgba(26, 31, 58, 0.95);
  border-color: var(--gold-primary);
  box-shadow: 0 0 14px var(--gold-glow);
  outline: none;
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  height: auto;
  min-height: 100px;
  padding: var(--space-3) var(--space-4);
  resize: vertical;
}

/* Custom Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23c8a951' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-helper {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
}


/* ====================================================================
   16. PROGRESS BARS & CIRCULAR METERS
   ==================================================================== */

.progress-bar-container {
  width: 100%;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar {
  display: block;
  height: 8px;
  background: linear-gradient(90deg, var(--gold-dark) 0%, var(--gold-primary) 60%, var(--gold-bright) 100%);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px var(--gold-glow);
  position: relative;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
  animation: shimmer 2s infinite linear;
}

.progress-bar-sm {
  height: 4px;
}

.progress-bar-lg {
  height: 14px;
}

.progress-bar-success {
  background: linear-gradient(90deg, var(--color-success-dark) 0%, var(--color-success) 100%);
  box-shadow: 0 0 10px rgba(40, 201, 149, 0.4);
}

.progress-bar-warning {
  background: linear-gradient(90deg, var(--color-warning-dark) 0%, var(--color-warning) 100%);
  box-shadow: 0 0 10px rgba(243, 156, 18, 0.4);
}

.progress-bar-error {
  background: linear-gradient(90deg, var(--color-error-dark) 0%, var(--color-error) 100%);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

/* SVG Circular Progress Meter */
.progress-circle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.progress-circle-svg {
  transform: rotate(-90deg);
}

.progress-circle-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
}

.progress-circle-fill {
  fill: none;
  stroke: var(--gold-primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease;
}

.progress-circle-inner-text {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-white);
}

/* ====================================================================
   17. CARDS & GLASS PANELS
   ==================================================================== */

.card {
  position: relative;
  background: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0;
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 14, 39, 0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Subtle Card Glow Effect */
.card-glow {
  position: relative;
}

.card-glow::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 30px rgba(216, 180, 91, 0.18);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.card-glow:hover::after {
  opacity: 1;
}

/* ====================================================================
   18. BADGES, TAGS & LABELS
   ==================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-gold {
  background: rgba(216, 180, 91, 0.15);
  color: var(--gold-bright);
  border: 1px solid var(--border-gold-strong);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid var(--color-warning-border);
}

.badge-info {
  background: var(--color-info-bg);
  color: var(--color-info);
  border: 1px solid var(--color-info-border);
}

.badge-danger {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error-border);
}

.badge-pill {
  border-radius: var(--radius-full);
}

/* Tags (Rounded Pills) */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  font-size: var(--font-size-xs);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.tag:hover {
  background: rgba(216, 180, 91, 0.15);
  border-color: var(--gold-primary);
  color: var(--gold-bright);
}

/* ====================================================================
   19. EMPTY STATES & PLACEHOLDERS
   ==================================================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-12) var(--space-6);
  background: rgba(19, 26, 62, 0.4);
  border: 2px dashed rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  margin: var(--space-6) 0;
}

.empty-state-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: rgba(216, 180, 91, 0.1);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  margin-bottom: var(--space-5);
  box-shadow: 0 0 20px var(--gold-glow);
}

.empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: var(--space-2);
}

.empty-state-desc {
  font-size: var(--font-size-sm);
  color: var(--text-medium);
  max-width: 440px;
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

/* ====================================================================
   20. LOADING STATES & SKELETON PLACEHOLDERS
   ==================================================================== */

/* Circular Gold Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 3px solid rgba(216, 180, 91, 0.2);
  border-top-color: var(--gold-primary);
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Skeleton Shimmer Loading */
.skeleton {
  background: linear-gradient(90deg, rgba(26, 31, 58, 0.8) 25%, rgba(44, 51, 96, 0.9) 37%, rgba(26, 31, 58, 0.8) 63%);
  background-size: 400% 100%;
  animation: skeletonShimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 16px;
  margin-bottom: var(--space-2);
  width: 100%;
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}

@keyframes skeletonShimmer {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}

/* ====================================================================
   ULTRA-PREMIUM ENTRANCE & SPLASH LOADER
   ==================================================================== */
.page-loader {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 40%, #151b3d 0%, #0B1020 60%, #060919 100%);
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.6s;
}

.page-loader.hide {
  opacity: 0;
  transform: scale(1.04);
  visibility: hidden;
  pointer-events: none;
}

.splash-ambient-glow {
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 180, 91, 0.16) 0%, rgba(216, 180, 91, 0.03) 45%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  animation: splashPulseGlow 3s ease-in-out infinite alternate;
}

@keyframes splashPulseGlow {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.15); opacity: 1; }
}

.loader-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  max-width: 420px;
  animation: splashFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes splashFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.splash-emblem {
  position: relative;
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.splash-emblem-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1.5px solid rgba(216, 180, 91, 0.22);
  border-top-color: #f5e197;
  animation: splashRotate 2.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes splashRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.splash-emblem-core {
  width: 80px;
  height: 80px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(26, 31, 58, 0.95), rgba(15, 21, 53, 0.95));
  border: 1px solid rgba(216, 180, 91, 0.35);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 24px rgba(216, 180, 91, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.splash-brand {
  margin-bottom: 24px;
}

.splash-title {
  margin: 0;
  font-family: var(--font-display, system-ui, sans-serif);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: #ffffff;
  text-transform: uppercase;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.splash-accent {
  background: linear-gradient(135deg, #f5e197 0%, #c8a951 50%, #e0c175 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.splash-subtitle {
  margin: 6px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  font-weight: 600;
  color: #7a82a0;
  text-transform: uppercase;
}

.splash-loader-bar {
  width: 180px;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 14px;
  position: relative;
}

.splash-loader-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 45%;
  background: linear-gradient(90deg, #c8a951, #f5e197, #c8a951);
  border-radius: 99px;
  animation: splashBarMove 1.4s ease-in-out infinite;
}

@keyframes splashBarMove {
  0% { left: -45%; width: 30%; }
  50% { width: 50%; }
  100% { left: 100%; width: 30%; }
}

.splash-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: #b8bfd6;
  font-weight: 500;
}

.splash-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #28C995;
  box-shadow: 0 0 8px #28C995;
  animation: splashPulseDot 1.5s infinite;
}

@keyframes splashPulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}

/* ====================================================================
   21. COMPLETE ANIMATION SUITE & KEYFRAMES
   ==================================================================== */

.animate-in {
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideLeft {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideRight {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.92);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.85;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes glow {
  0% {
    box-shadow: 0 0 10px rgba(216, 180, 91, 0.2);
  }
  50% {
    box-shadow: 0 0 30px rgba(216, 180, 91, 0.6);
  }
  100% {
    box-shadow: 0 0 10px rgba(216, 180, 91, 0.2);
  }
}

@keyframes flipCard {
  0% {
    transform: rotateY(0deg);
  }
  100% {
    transform: rotateY(180deg);
  }
}

@keyframes progressFill {
  from {
    width: 0;
  }
}

@keyframes shake {
  10%, 90% {
    transform: translateX(-2px);
  }
  20%, 80% {
    transform: translateX(4px);
  }
  30%, 50%, 70% {
    transform: translateX(-6px);
  }
  40%, 60% {
    transform: translateX(6px);
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* Confetti Particle Burst Animation */
@keyframes confetti {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(600px) rotate(720deg);
    opacity: 0;
  }
}

.confetti-piece {
  position: absolute;
  width: 10px;
  height: 16px;
  background: var(--gold-primary);
  opacity: 0;
  animation: confetti 3s ease-out infinite;
  pointer-events: none;
  z-index: 999;
}

/* ====================================================================
   22. RESPONSIVE DESIGN (MOBILE-FIRST BREAKPOINTS)
   ==================================================================== */

/* --- Desktop & Wide Screen Defaults (769px+) --- */
@media screen and (min-width: 769px) {
  .desktop-only {
    display: block !important;
  }

  span.desktop-only,
  a .desktop-only,
  button .desktop-only {
    display: inline !important;
  }

  .mobile-only {
    display: none !important;
  }
}

/* --- Breakpoint: <= 1200px (Laptops / Small Desktops) --- */
@media screen and (max-width: 1200px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }

  .books-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-actions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Breakpoint: <= 860px (Tablets & Mobile) --- */
@media screen and (max-width: 860px) {
  /* Ultra-smooth mobile performance: eliminate GPU compositing lag */
  *, *::before, *::after {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    touch-action: manipulation;
  }

  html, body {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
  }

  .sidebar {
    background: #0B1020 !important;
  }

  .mobile-header {
    background: #0B1020 !important;
  }

  .card, .stat-card, .book-card, .unit-card, .modal-content, .toast, .flashcard-front, .flashcard-back {
    background-color: #151B2D !important;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45) !important;
  }

  /* GPU-accelerated flashcards */
  .flashcard, .flashcard-front, .flashcard-back {
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
  }

  /* Optimize unit list and word lists rendering */
  .unit-card, .word-list-row, .topic-card {
    content-visibility: auto;
    contain-intrinsic-size: 80px;
  }

  .app-container {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: 100vw !important;
    min-width: 0 !important;
    overflow-x: hidden !important;
  }

  .desktop-only {
    display: none !important;
  }

  .mobile-only {
    display: block !important;
  }

  .mobile-header {
    display: flex !important;
    width: 100% !important;
    max-width: 100% !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
  }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: 10px 0 35px rgba(0, 0, 0, 0.7);
    width: 280px !important;
  }

  .sidebar.open,
  .sidebar.mobile-open {
    transform: translateX(0) !important;
  }

  .main-content,
  .app-container .main-content,
  .app-container.sidebar-collapsed .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    flex: 1 1 auto !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  .container {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: var(--space-4) !important;
    padding-right: var(--space-4) !important;
    box-sizing: border-box !important;
  }

  .topbar {
    display: none !important;
  }

  .hero-section {
    flex-direction: column;
    text-align: center;
    padding: var(--space-8) var(--space-6);
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-graphic {
    margin-top: var(--space-4);
  }

  .units-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Breakpoint: <= 768px (Phablets & Mobile Devices) --- */
@media screen and (max-width: 768px) {
  :root {
    --font-size-4xl: 1.55rem;
    --font-size-3xl: 1.35rem;
    --font-size-2xl: 1.15rem;
    --font-size-xl: 1.05rem;
  }

  .container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }

  /* 1. HIDE ALL OVERSIZED DECORATIVE GRAPHICS & DESKTOP ELEMENTS ON MOBILE */
  .hero-graphic {
    display: none !important;
  }

  .desktop-only,
  span.desktop-only,
  a .desktop-only,
  button .desktop-only,
  div.desktop-only {
    display: none !important;
  }

  .learn-breadcrumbs {
    display: none !important;
  }

  .mobile-only {
    display: block !important;
  }

  span.mobile-only,
  a .mobile-only,
  button .mobile-only {
    display: inline !important;
  }

  /* 2. COMPACT, PUNCHY HERO SECTION */
  .hero-section {
    padding: 14px 14px !important;
    margin-bottom: 12px !important;
    border-radius: var(--radius-xl) !important;
    flex-direction: column !important;
    align-items: stretch !important;
    min-height: auto !important;
  }

  .hero-content {
    max-width: 100% !important;
  }

  .hero-eyebrow {
    font-size: 0.65rem !important;
    padding: 3px 8px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    margin-bottom: 6px !important;
    display: inline-flex !important;
    max-width: 100% !important;
  }

  .hero-title {
    font-size: 1.35rem !important;
    line-height: 1.25 !important;
    margin-bottom: 6px !important;
    word-break: break-word !important;
  }

  .hero-subtitle {
    font-size: 0.8rem !important;
    line-height: 1.45 !important;
    margin-bottom: 10px !important;
    color: var(--text-light) !important;
  }

  .hero-mission-banner {
    padding: 8px 10px !important;
    margin-bottom: 10px !important;
    font-size: 0.76rem !important;
    line-height: 1.35 !important;
    border-radius: var(--radius-md) !important;
  }

  .hero-actions {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
    width: 100% !important;
  }

  .hero-actions .btn {
    width: 100% !important;
    min-height: 42px !important;
    padding: 8px 14px !important;
    font-size: 0.84rem !important;
    justify-content: center !important;
  }

  /* Compact Hero Stats Strip for Subpages */
  .hero-stats-strip {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
    padding-top: 10px !important;
  }

  .hero-stats-strip > div:first-child {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
    width: 100% !important;
  }

  .hero-stats-strip > div:first-child > div {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 2px !important;
  }

  .hero-stats-strip > div:first-child > div > div:first-child {
    display: none !important;
  }

  .hero-stats-strip .btn {
    width: 100% !important;
    justify-content: center !important;
    min-height: 38px !important;
  }

  /* 3. 2-COLUMN MODERN COMPACT STATS GRID */
  .stats-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
    margin-bottom: 14px !important;
  }

  .stat-card {
    padding: 10px 10px !important;
    border-radius: var(--radius-md) !important;
    min-height: auto !important;
  }

  .stat-header {
    margin-bottom: 6px !important;
  }

  .stat-icon-wrapper {
    width: 30px !important;
    height: 30px !important;
    min-width: 30px !important;
  }

  .stat-value {
    font-size: 1.3rem !important;
    margin-bottom: 2px !important;
    line-height: 1.1 !important;
  }

  .stat-value-sub {
    font-size: 0.7rem !important;
  }

  .stat-label {
    font-size: 0.72rem !important;
    line-height: 1.25 !important;
  }

  .stat-trend {
    font-size: 0.62rem !important;
    padding: 2px 5px !important;
  }

  .stat-micro-track {
    height: 4px !important;
    margin-top: 6px !important;
  }

  .stats-grid .stat-card:nth-child(5) {
    grid-column: span 2 !important;
  }

  /* 4. HORIZONTAL SWIPEABLE NATIVE CATEGORY CHIPS */
  .dict-filter-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
    margin-bottom: 10px !important;
  }

  .category-chips-list {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 6px !important;
    padding: 2px 2px 6px 2px !important;
    scrollbar-width: none !important;
    width: 100% !important;
  }

  .category-chips-list::-webkit-scrollbar {
    display: none !important;
  }

  .dict-category-chip,
  .category-chip {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
    padding: 6px 12px !important;
    font-size: 0.78rem !important;
    border-radius: var(--radius-full) !important;
  }

  .dict-search-wrap {
    width: 100% !important;
    min-width: 100% !important;
  }

  /* 5. COMPACT BOOK CARDS */
  .books-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }

  .book-card {
    padding: 12px 14px !important;
    min-height: auto !important;
    border-radius: var(--radius-lg) !important;
    margin-bottom: 6px !important;
  }

  .book-cover-art {
    width: 42px !important;
    height: 52px !important;
    min-width: 42px !important;
  }

  .book-title {
    font-size: 1.05rem !important;
    line-height: 1.25 !important;
    margin-bottom: 2px !important;
  }

  .book-desc {
    font-size: 0.76rem !important;
    line-height: 1.35 !important;
    margin-bottom: 6px !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
  }

  .book-meta {
    gap: 8px !important;
    font-size: 0.72rem !important;
    margin-bottom: 6px !important;
  }

  .book-progress-wrapper {
    margin-top: 6px !important;
  }

  /* 6. SLIM BREADCRUMBS */
  .breadcrumbs {
    padding: 5px 10px !important;
    font-size: 0.72rem !important;
    margin-bottom: 8px !important;
    white-space: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }

  .breadcrumbs::-webkit-scrollbar {
    display: none !important;
  }

  /* 7. REVOLUTIONARY FLASHCARD MOBILE UX */
  .flashcard-meta-bar {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 6px !important;
    padding: 4px 0 !important;
    margin-bottom: 8px !important;
  }

  .flashcard-meta-bar .btn {
    padding: 5px 8px !important;
    font-size: 0.72rem !important;
    white-space: nowrap !important;
  }

  .flashcard-counter-badge {
    padding: 3px 8px !important;
    font-size: 0.72rem !important;
  }

  .flashcard-progress-bar-container {
    height: 4px !important;
    margin-bottom: 8px !important;
  }

  /* --- Signature Mobile Flashcard Geometry (Zero-Void, Zero-Overflow) --- */
  .flashcard-section {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 4px !important;
    gap: 8px !important;
    margin-bottom: 16px !important;
  }

  .flashcard-container {
    width: 100% !important;
    height: 410px !important;
    min-height: 410px !important;
    max-height: 410px !important;
    margin: 0 auto 10px !important;
    position: relative !important;
    z-index: 5 !important;
    perspective: 1000px !important;
  }

  .flashcard {
    position: relative !important;
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    max-height: 100% !important;
    border-radius: var(--radius-xl) !important;
    transform-style: preserve-3d !important;
    -webkit-transform-style: preserve-3d !important;
    cursor: pointer !important;
  }

  .flashcard-front,
  .flashcard-back {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    max-height: 100% !important;
    padding: 12px 14px 10px 14px !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    align-items: center !important;
    text-align: center !important;
    border-radius: var(--radius-xl) !important;
    backface-visibility: hidden !important;
    -webkit-backface-visibility: hidden !important;
    transform: translate3d(0, 0, 1px) !important;
    -webkit-transform: translate3d(0, 0, 1px) !important;
  }

  .flashcard-main-content {
    padding: 0 !important;
    gap: 4px !important;
    flex: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .card-visual-frame {
    height: 160px !important;
    max-width: 100% !important;
    margin: 0 auto 4px auto !important;
    border-radius: 12px !important;
  }

  .card-vocab-img {
    height: 160px !important;
    border-radius: 12px !important;
  }

  .flashcard-back {
    transform: rotateY(180deg) translate3d(0, 0, 1px) !important;
    -webkit-transform: rotateY(180deg) translate3d(0, 0, 1px) !important;
  }

  .word-english {
    font-size: 1.75rem !important;
    font-weight: 800 !important;
    line-height: 1.15 !important;
    margin: 2px 0 !important;
  }

  .word-back-english {
    font-size: 1.05rem !important;
    font-weight: 700 !important;
    color: var(--text-light) !important;
    letter-spacing: 0.03em !important;
    margin-bottom: 2px !important;
  }

  .word-pronunciation {
    padding: 3px 10px !important;
    font-size: 0.8rem !important;
    margin: 2px 0 !important;
  }

  .word-uzbek-card-box {
    margin: 2px 0 !important;
    padding: 4px 12px !important;
    border-radius: 8px !important;
  }

  .word-uzbek-badge-label {
    font-size: 0.72rem !important;
  }

  .word-uzbek-text,
  .word-uzbek {
    font-size: 1.15rem !important;
    font-weight: 800 !important;
  }

  .word-example-wrapper {
    padding: 6px 10px !important;
    margin-top: 4px !important;
    max-width: 100% !important;
  }

  .word-example {
    font-size: 0.8rem !important;
    line-height: 1.3 !important;
  }

  .word-example-translation {
    font-size: 0.74rem !important;
  }

  .card-tap-hint {
    font-size: 0.72rem !important;
    color: var(--text-muted) !important;
    pointer-events: none !important;
    user-select: none !important;
    margin-top: auto !important;
    line-height: 1.2 !important;
    padding-top: 2px !important;
  }

  /* Thumb-Ergonomic 2-Row Learning Controls */
  .learning-controls {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
    width: 100% !important;
    margin-top: 10px !important;
    position: relative !important;
    z-index: 25 !important;
    padding-bottom: max(12px, env(safe-area-inset-bottom)) !important;
  }

  .control-btn.btn-dont-know {
    grid-column: 1 !important;
    grid-row: 1 !important;
    width: 100% !important;
    min-width: 0 !important;
    min-height: 48px !important;
    padding: 8px 8px !important;
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    justify-content: center !important;
    border-radius: var(--radius-md) !important;
  }

  .control-btn.btn-know {
    grid-column: 2 !important;
    grid-row: 1 !important;
    width: 100% !important;
    min-width: 0 !important;
    min-height: 48px !important;
    padding: 8px 8px !important;
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    justify-content: center !important;
    border-radius: var(--radius-md) !important;
  }

  #btn-learn-prev {
    grid-column: 1 !important;
    grid-row: 2 !important;
    width: 100% !important;
    min-height: 38px !important;
    font-size: 0.78rem !important;
    padding: 6px 8px !important;
    justify-content: center !important;
    border-radius: var(--radius-md) !important;
  }

  #btn-learn-next {
    grid-column: 2 !important;
    grid-row: 2 !important;
    width: 100% !important;
    min-height: 38px !important;
    font-size: 0.78rem !important;
    padding: 6px 8px !important;
    justify-content: center !important;
    border-radius: var(--radius-md) !important;
  }

  /* Hide useless keyboard desktop shortcut texts on phone screen */
  .flashcard-section > div:last-child {
    display: none !important;
  }

  /* --- Mobile Units Page & Cards Optimization --- */
  .units-header {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--space-2) !important;
  }

  .units-header > div {
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: var(--space-2) !important;
  }

  #unit-filter-search-input {
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .units-filter-tabs {
    display: flex !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding: 4px 6px !important;
    gap: 6px !important;
    scrollbar-width: none !important;
    box-sizing: border-box !important;
  }
  .units-filter-tabs::-webkit-scrollbar {
    display: none !important;
  }

  .unit-tab-btn {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
    padding: 6px 14px !important;
    font-size: 0.78rem !important;
    border-radius: var(--radius-full) !important;
  }

  .unit-card {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    padding: 10px 12px !important;
    gap: 8px !important;
    border-radius: var(--radius-lg) !important;
    margin-bottom: 6px !important;
  }

  .unit-card-left {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  .unit-number-badge {
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    flex-shrink: 0 !important;
    border-radius: var(--radius-md) !important;
  }

  .unit-number-title {
    font-size: 0.55rem !important;
  }

  .unit-number-val {
    font-size: 1.05rem !important;
  }

  .unit-details {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    overflow: hidden !important;
  }

  .unit-name-en {
    font-size: 0.92rem !important;
    font-weight: 700 !important;
    color: var(--text-white) !important;
    line-height: 1.25 !important;
    margin-bottom: 2px !important;
    white-space: normal !important;
    word-break: break-word !important;
  }

  .unit-name-uz {
    font-size: 0.75rem !important;
    margin-bottom: 2px !important;
    line-height: 1.2 !important;
  }

  .unit-card-right {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    padding-top: 6px !important;
    border-top: 1px solid rgba(255, 255, 255, 0.06) !important;
  }

  .unit-card-right > div {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
  }

  .unit-meta-row {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    font-size: 0.72rem !important;
    color: var(--text-light) !important;
  }

  .unit-progress-bar-wrap {
    width: 80px !important;
    height: 4px !important;
  }

  .quick-actions-grid {
    grid-template-columns: 1fr;
    gap: 8px !important;
  }

  .options-grid {
    grid-template-columns: 1fr;
    gap: 8px !important;
  }

  .matching-exercise {
    grid-template-columns: 1fr;
  }

  .results-stats {
    grid-template-columns: 1fr;
  }

  .results-actions {
    flex-direction: column;
    width: 100%;
    gap: 8px !important;
  }

  .results-actions .btn {
    width: 100%;
    min-height: 44px !important;
  }

  .word-list-header {
    grid-template-columns: 40px 1fr 1fr;
  }

  .word-list-row {
    grid-template-columns: 40px 1fr 1fr;
  }

  .word-list-header div:nth-child(4),
  .word-list-header div:nth-child(5),
  .word-list-row div:nth-child(4),
  .word-list-row div:nth-child(5) {
    display: none;
  }

  .toast-container {
    top: auto;
    bottom: var(--space-4);
    right: var(--space-4);
    left: var(--space-4);
    max-width: none;
  }

  .modal-content {
    margin: var(--space-3);
  }
}

/* --- Breakpoint: <= 480px (Compact Mobile Devices) --- */
@media screen and (max-width: 480px) {
  .hero-section {
    padding: var(--space-6) var(--space-4);
  }

  .btn {
    min-height: 44px; /* Touch target accessibility */
    padding: 0.6rem 1.1rem;
  }

  .option-btn {
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
  }

  .flashcard-container {
    height: 340px;
  }

  .word-english {
    font-size: 1.75rem;
  }

  .word-uzbek {
    font-size: 1.5rem;
  }

  .results-score-display {
    width: 150px;
    height: 150px;
  }

  .results-score-number {
    font-size: 2.3rem;
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer .btn {
    width: 100%;
  }
}

/* ====================================================================
   23. UTILITY CLASSES (LAYOUT, TYPOGRAPHY, SPACING)
   ==================================================================== */

/* Text Alignment */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

/* Text Color Utilities */
.text-white { color: var(--text-white) !important; }
.text-light { color: var(--text-light) !important; }
.text-medium { color: var(--text-medium) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-gold { color: var(--gold-light) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-error { color: var(--color-error) !important; }
.text-info { color: var(--color-info) !important; }

/* Font Weight Utilities */
.font-normal { font-weight: 400 !important; }
.font-medium { font-weight: 500 !important; }
.font-semibold { font-weight: 600 !important; }
.font-bold { font-weight: 700 !important; }
.font-extrabold { font-weight: 800 !important; }

/* Margin Top Utilities */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-5 { margin-top: var(--space-5) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.mt-8 { margin-top: var(--space-8) !important; }

/* Margin Bottom Utilities */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-5 { margin-bottom: var(--space-5) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }

/* Padding Utilities */
.p-0 { padding: 0 !important; }
.p-2 { padding: var(--space-2) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }

/* Gap Utilities */
.gap-1 { gap: var(--space-1) !important; }
.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.gap-6 { gap: var(--space-6) !important; }

/* Display & Visibility */
.hidden { display: none !important; }
.visible { display: block !important; }
.invisible { visibility: hidden !important; }

/* Flexbox System */
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.flex-col { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }
.flex-wrap { flex-wrap: wrap !important; }
.items-center { align-items: center !important; }
.items-start { align-items: flex-start !important; }
.items-end { align-items: flex-end !important; }
.justify-between { justify-content: space-between !important; }
.justify-center { justify-content: center !important; }
.justify-start { justify-content: flex-start !important; }
.justify-end { justify-content: flex-end !important; }
.flex-1 { flex: 1 1 0% !important; }

/* Sizing */
.w-full { width: 100% !important; }
.h-full { height: 100% !important; }
.max-w-full { max-width: 100% !important; }

/* Text Overflow & Truncate */
.truncate {
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}

/* Glassmorphism Surface Helper */
.glass-panel {
  background: var(--card-bg) !important;
  backdrop-filter: blur(14px) !important;
  -webkit-backdrop-filter: blur(14px) !important;
  border: 1px solid var(--border-gold) !important;
  border-radius: var(--radius-lg) !important;
}

/* ====================================================================
   24. PREFERS-REDUCED-MOTION (ACCESSIBILITY COMPLIANCE)
   ==================================================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .flashcard {
    transition: none !important;
  }

  .spinner {
    animation: none !important;
    border-top-color: var(--gold-primary) !important;
    border-style: dotted !important;
  }

  .skeleton {
    animation: none !important;
    background: rgba(26, 31, 58, 0.9) !important;
  }

  .confetti-piece {
    display: none !important;
  }
}

/* ====================================================================
   25. PRINT STYLESHEET (CLEAN EXAM PRINTOUT)
/* ====================================================================
   22. ACTIVATION & SECURITY LOCK SCREEN
   ==================================================================== */

.activation-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: radial-gradient(circle at 50% 30%, #151b44 0%, #0B1020 80%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  overflow-y: auto;
}

.activation-card {
  width: 100%;
  max-width: 480px;
  background: rgba(22, 28, 58, 0.92);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(216, 180, 91, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  text-align: center;
  position: relative;
  animation: scaleIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.activation-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid rgba(216, 180, 91, 0.3);
  color: var(--gold-light);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.activation-logo {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: var(--space-2);
}

.activation-logo-elite {
  font-family: var(--font-display, system-ui);
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #ffffff 30%, var(--gold-lighter) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.activation-logo-academy {
  font-family: var(--font-display, system-ui);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold-primary);
}

.activation-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: var(--space-2);
}

.activation-desc {
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.45;
  margin-bottom: var(--space-5);
}

.activation-step-box {
  background: rgba(10, 14, 39, 0.75);
  border: 1px solid rgba(216, 180, 91, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  text-align: left;
}

.step-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-3);
}

.step-num {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
  color: #0B1020;
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-white);
}

.step-refresh-btn {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--gold-light);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.step-refresh-btn:hover {
  transform: rotate(180deg);
}

.challenge-display-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(15, 21, 53, 0.95);
  border: 1px solid rgba(216, 180, 91, 0.35);
  border-radius: var(--radius-md);
  padding: 8px 14px;
}

.challenge-digits {
  font-family: monospace, system-ui;
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--gold-light);
  letter-spacing: 0.3em;
  text-shadow: 0 0 12px var(--gold-glow);
}

.btn-copy-challenge {
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid var(--gold-primary);
  color: var(--gold-light);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-copy-challenge:hover {
  background: var(--gold-primary);
  color: #0B1020;
}

.step-hint {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.35;
}

.pin-inputs-wrap {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 6px;
}

.pin-input {
  width: 52px;
  height: 60px;
  background: rgba(10, 14, 39, 0.9);
  border: 2px solid rgba(216, 180, 91, 0.3);
  border-radius: 12px;
  color: var(--text-white);
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  outline: none;
  transition: all var(--transition-fast);
}

.pin-input:focus {
  border-color: var(--gold-primary);
  box-shadow: 0 0 14px var(--gold-glow);
  background: rgba(15, 21, 53, 1);
}

.pin-input.shake {
  animation: shake 0.4s ease-in-out;
  border-color: var(--color-danger);
  box-shadow: 0 0 14px rgba(239, 68, 68, 0.4);
}

.pin-input.success {
  border-color: var(--color-success);
  box-shadow: 0 0 14px rgba(40, 201, 149, 0.4);
}

.btn-activate-platform {
  width: 100%;
  height: 52px;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
  color: #0B1020;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: var(--space-4);
  box-shadow: 0 6px 20px rgba(216, 180, 91, 0.35);
  transition: all var(--transition-fast);
}

.btn-activate-platform:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(216, 180, 91, 0.5);
}

.btn-activate-platform:active {
  transform: translateY(0);
}

.activation-error {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #ff7675;
  border-radius: 10px;
  font-size: 0.82rem;
  text-align: center;
  animation: fadeIn 0.25s ease;
}

.activation-footer-note {
  margin-top: 18px;
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ====================================================================
   23. PRINT STYLES
   ==================================================================== */

@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body {
    background: #ffffff !important;
    color: #111111 !important;
    font-size: 12pt;
    line-height: 1.4;
  }

  .sidebar,
  .mobile-header,
  .topbar,
  .sidebar-overlay,
  .toast-container,
  .modal-overlay,
  .hero-actions,
  .learning-controls,
  .exercise-timer,
  .confetti-piece {
    display: none !important;
  }

  .main-content {
    margin-left: 0 !important;
    padding: 0 !important;
  }

  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }

  .card,
  .test-container,
  .results-container,
  .exercise-container {
    border: 1px solid #cccccc !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    page-break-inside: avoid;
    padding: 1cm !important;
    margin-bottom: 1.5cm !important;
  }

  h1, h2, h3, h4, h5, h6 {
    color: #000000 !important;
    page-break-after: avoid;
  }

  a, a:visited {
    text-decoration: underline;
    color: #000000 !important;
  }

  .level-badge,
  .badge {
    border: 1px solid #333333 !important;
    color: #000000 !important;
  }

  .results-grade {
    border: 2px solid #000000 !important;
    color: #000000 !important;
  }
}

/* ============================================================================
 * 23. PDF BOOKS LIBRARY & IN-APP READER STYLES
 * ============================================================================ */
.pdf-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #ff6b6b;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pdf-badge-gold {
  background: rgba(216, 180, 91, 0.15);
  border-color: rgba(216, 180, 91, 0.35);
  color: var(--gold-light);
}

.pdf-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(15, 21, 53, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

.pdf-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.pdf-reader-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
}

.pdf-reader-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-md);
}

.pdf-reader-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.pdf-reader-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-white);
  margin: 0;
}

.pdf-reader-frame-box {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  background: #10162A;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  position: relative;
}

.pdf-reader-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #0B1020;
}

@media (max-width: 600px) {
  .pdf-actions-grid {
    grid-template-columns: 1fr;
  }
  .pdf-reader-frame-box {
    height: 60vh;
    min-height: 380px;
  }
}

.pdf-mobile-callout {
  background: linear-gradient(135deg, rgba(216, 180, 91, 0.12) 0%, rgba(26, 31, 58, 0.95) 100%);
  border: 1px solid rgba(216, 180, 91, 0.35);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.pdf-mobile-callout-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.pdf-mobile-callout-info {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.pdf-mobile-icon-badge {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: var(--radius-md);
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid rgba(216, 180, 91, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
}

.pdf-mobile-callout-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.pdf-hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
}

@media (max-width: 768px) {
  .pdf-mobile-callout-actions .btn {
    width: 100%;
  }
  .pdf-reader-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .pdf-reader-title-wrap {
    justify-content: space-between;
    width: 100%;
  }
}


/* ====================================================================
   23. ELITE ACADEMY 2.0 — SMART VOCABULARY & ULTRA PREMIUM STYLES
   ==================================================================== */

/* --- Global Search Modal --- */
.search-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1500;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh var(--space-4) var(--space-6);
  animation: fadeIn 0.2s ease-out;
}

.search-modal {
  width: 100%;
  max-width: 680px;
  background: rgba(19, 26, 62, 0.96);
  border: 1px solid var(--border-gold-strong);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7), 0 0 40px rgba(216, 180, 91, 0.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: scaleIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  gap: var(--space-3);
  background: rgba(26, 31, 58, 0.5);
}

.search-modal-icon {
  color: var(--gold-primary);
  flex-shrink: 0;
}

.search-modal-input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: #fff;
  outline: none;
}

.search-modal-close {
  background: transparent;
  border: none;
  color: var(--text-medium);
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
  transition: color var(--transition-fast);
}

.search-modal-close:hover {
  color: var(--gold-bright);
}

.search-modal-filters {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  background: rgba(10, 14, 39, 0.4);
}

.search-filter-pill {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-filter-pill:hover,
.search-filter-pill.active {
  background: rgba(216, 180, 91, 0.2);
  border-color: var(--gold-primary);
  color: var(--gold-light);
}

.search-modal-results {
  max-height: 420px;
  overflow-y: auto;
  padding: var(--space-2) var(--space-3);
}

.search-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.search-result-item:hover,
.search-result-item.focused {
  background: rgba(26, 31, 58, 0.85);
  border-color: rgba(216, 180, 91, 0.35);
  transform: translateX(4px);
}

.search-result-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.search-word-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.search-word-en {
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
}

.search-word-ipa {
  font-size: 0.8rem;
  color: var(--gold-light);
  font-family: var(--font-mono);
}

.search-word-uz {
  font-size: 0.88rem;
  color: var(--text-light);
}

.search-result-badges {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
}

.search-book-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  background: rgba(216, 180, 91, 0.12);
  color: var(--gold-light);
  font-weight: 600;
}

.search-unit-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-medium);
}

.search-empty-state {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--text-medium);
}

.search-hint {
  display: block;
  font-size: 0.8rem;
  margin-top: 6px;
  color: var(--text-muted);
}

.search-modal-footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: rgba(10, 14, 39, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.search-modal-footer kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--text-light);
}

/* --- Achievements Modal & Cards --- */
.achievements-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.2s ease-out;
}

.achievements-modal {
  width: 100%;
  max-width: 760px;
  max-height: 85vh;
  background: rgba(19, 26, 62, 0.98);
  border: 1px solid var(--border-gold-strong);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: scaleIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.achievements-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(26, 31, 58, 0.6);
}

.achievements-header-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.achievements-icon-wrap {
  font-size: 1.8rem;
}

.achievements-header-title h3 {
  font-size: var(--font-size-lg);
  color: #fff;
  margin: 0;
}

.achievements-header-title p {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  margin: 0;
}

.achievements-modal-close {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: var(--text-medium);
  cursor: pointer;
}

.achievements-modal-close:hover {
  color: #fff;
}

.achievements-modal-body {
  padding: var(--space-5) var(--space-6);
  overflow-y: auto;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

.achievement-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: rgba(26, 31, 58, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.achievement-card.unlocked {
  background: radial-gradient(circle at 10% 10%, rgba(216, 180, 91, 0.12) 0%, rgba(26, 31, 58, 0.8) 100%);
  border-color: rgba(216, 180, 91, 0.4);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.achievement-card.locked {
  opacity: 0.55;
  filter: grayscale(0.5);
}

.achievement-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-light);
  flex-shrink: 0;
}

.achievement-card.locked .achievement-card-icon {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.achievement-info {
  flex: 1;
}

.achievement-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}

.achievement-desc {
  font-size: 0.78rem;
  color: var(--text-medium);
  line-height: 1.4;
  margin-bottom: 6px;
}

.achievement-status {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--gold-bright);
}

/* --- Bugungi O'quv Rejasi (Daily Learning Agenda) --- */
.daily-agenda-section {
  margin-bottom: var(--space-8);
}

.daily-agenda-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.agenda-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.agenda-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.agenda-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(216, 180, 91, 0.15);
  border: 1px solid var(--border-gold-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-bright);
}

.agenda-title-wrap h3 {
  font-size: var(--font-size-lg);
  color: #fff;
  margin: 0;
}

.agenda-title-wrap p {
  font-size: var(--font-size-xs);
  color: var(--text-medium);
  margin: 0;
}

.agenda-goal-selector {
  display: flex;
  align-items: center;
  gap: 6px;
}

.agenda-goal-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 4px;
}

.agenda-goal-chip {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.agenda-goal-chip:hover,
.agenda-goal-chip.active {
  background: var(--gold-primary);
  border-color: var(--gold-primary);
  color: #0B1020;
  box-shadow: 0 0 10px var(--gold-glow);
}

.agenda-tasks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}

.agenda-task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(19, 26, 62, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.agenda-task-item:hover {
  background: rgba(26, 31, 58, 0.85);
  border-color: rgba(216, 180, 91, 0.3);
  transform: translateY(-2px);
}

.agenda-task-item.completed {
  border-color: rgba(40, 201, 149, 0.35);
  background: radial-gradient(circle at top right, rgba(40, 201, 149, 0.08), rgba(19, 26, 62, 0.6));
}

.agenda-task-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.agenda-check-indicator {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: transparent;
  transition: all var(--transition-fast);
}

.agenda-task-item.completed .agenda-check-indicator {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
  box-shadow: 0 0 10px rgba(40, 201, 149, 0.4);
}

.agenda-task-content h4 {
  font-size: var(--font-size-sm);
  color: #fff;
  margin: 0 0 2px;
}

.agenda-task-content p {
  font-size: 0.76rem;
  color: var(--text-medium);
  margin: 0;
}

/* --- Study Activity Visualizer (7-Day Heatmap / Mini Chart) --- */
.study-activity-section {
  margin-bottom: var(--space-8);
}

.activity-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  box-shadow: var(--shadow-lg);
}

.activity-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.activity-bars-container {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-3);
  align-items: flex-end;
  height: 120px;
  padding: var(--space-3) 0 var(--space-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.activity-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  gap: 6px;
}

.activity-bar-fill {
  width: 100%;
  max-width: 38px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold-primary) 100%);
  min-height: 4px;
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.activity-bar-fill.inactive {
  background: rgba(255, 255, 255, 0.08);
  height: 4px !important;
}

.activity-bar-val {
  font-size: 0.72rem;
  color: var(--gold-light);
  font-weight: 700;
}

.activity-day-label {
  font-size: 0.75rem;
  color: var(--text-medium);
  text-align: center;
  font-weight: 600;
  text-transform: uppercase;
  margin-top: 6px;
}

.activity-day-label.today {
  color: var(--gold-bright);
}

/* --- Favorite / Bookmark Star Button --- */
.favorite-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  padding: 6px;
  border-radius: 50%;
}

.favorite-btn:hover {
  color: var(--gold-light);
  transform: scale(1.15);
}

.favorite-btn.active {
  color: #f1c40f;
  filter: drop-shadow(0 0 6px rgba(241, 196, 15, 0.6));
}

/* --- Category Filter Chips for Books --- */
.category-filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.category-chip,
.dict-category-chip {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: var(--card-bg-elevated);
  border: 1px solid var(--border-navy);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.category-chip:hover,
.category-chip.active,
.dict-category-chip:hover,
.dict-category-chip.active {
  background: var(--gold-glow-subtle);
  border-color: var(--gold-primary);
  color: var(--gold-bright);
  box-shadow: 0 0 16px var(--gold-glow-subtle);
  transform: translateY(-1px);
}

/* --- Grammar Topic Cards (M. G'apporov Series) --- */
.grammar-topic-card {
  position: relative;
  background: var(--card-bg) !important;
  border: 1px solid var(--border-navy) !important;
  border-radius: var(--radius-lg) !important;
  transition: all var(--transition-base) !important;
  box-shadow: var(--shadow-md) !important;
  overflow: hidden;
}

.grammar-topic-card:hover {
  transform: translateY(-4px) !important;
  border-color: var(--border-gold) !important;
  background: var(--card-bg-elevated) !important;
  box-shadow: var(--shadow-xl), 0 0 24px var(--gold-glow-subtle) !important;
}

.grammar-topic-card .topic-section-badge {
  background: rgba(216, 180, 91, 0.12) !important;
  border: 1px solid var(--border-gold) !important;
  color: var(--gold-light) !important;
}

/* --- Enhanced Unit Search Bar --- */
.unit-search-bar {
  position: relative;
  max-width: 320px;
  width: 100%;
}





/* ====================================================================
   ULTRA-MODERN PREMIUM DESIGN TRANSFORMATION (ELITE ACADEMY 2.0)
   Architectural Design System: Cinematic Midnight Luxury & Ambient Gold
   ==================================================================== */

:root {
  /* Enhanced Cinematic Atmospheric Tokens */
  --bg-deep-void: #050814;
  --bg-midnight-canvas: #080E1E;
  --bg-obsidian-card: rgba(14, 21, 39, 0.78);
  --bg-obsidian-elevated: rgba(19, 29, 54, 0.88);
  --bg-glass-pill: rgba(255, 255, 255, 0.04);
  --bg-glass-pill-hover: rgba(216, 180, 91, 0.09);

  /* Gold Metallic Spectrum */
  --gold-metallic-grad: linear-gradient(135deg, #FAF0D6 0%, #D8B45B 50%, #A37E2A 100%);
  --gold-sheen-grad: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.18) 50%, transparent 100%);
  --gold-rim-glow: 0 0 24px rgba(216, 180, 91, 0.24);

  /* Electric Blue & Neon Highlights */
  --electric-blue: #38BDF8;
  --electric-indigo: #6366F1;
  --electric-blue-glow: rgba(56, 189, 248, 0.28);
  --emerald-mastery-glow: rgba(16, 185, 129, 0.30);
  --crimson-mistake-glow: rgba(244, 63, 94, 0.26);

  /* Elevation Shadows & Specular Insets */
  --shadow-cinematic-lg: 0 16px 48px -8px rgba(0, 0, 0, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --shadow-cinematic-card: 0 10px 32px -6px rgba(0, 0, 0, 0.50), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --shadow-cinematic-hover: 0 18px 44px -4px rgba(0, 0, 0, 0.65), 0 0 24px rgba(216, 180, 91, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.12);

  /* Fluid Motion Curve (Apple / Linear standard) */
  --ease-fluid: cubic-bezier(0.16, 1, 0.3, 1);
  --mobile-nav-height: 64px;
}

/* --- Atmospheric Multi-Layer Lighting Mesh --- */
body {
  background-color: var(--bg-deep-void) !important;
  background-image:
    radial-gradient(circle at 10% 8%, rgba(216, 180, 91, 0.045) 0%, transparent 45%),
    radial-gradient(circle at 90% 18%, rgba(56, 189, 248, 0.035) 0%, transparent 40%),
    radial-gradient(circle at 45% 85%, rgba(16, 185, 129, 0.025) 0%, transparent 50%),
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(216, 180, 91, 0.05) 0%, transparent 70%),
    linear-gradient(180deg, #050814 0%, #080E1E 50%, #050814 100%) !important;
  background-attachment: fixed !important;
  background-size: cover !important;
  color: var(--text-white) !important;
}

/* ====================================================================
   A. ELEVATED SIDEBAR & BRAND CREST
   ==================================================================== */

.sidebar {
  background: linear-gradient(180deg, rgba(8, 14, 30, 0.94) 0%, rgba(5, 8, 20, 0.98) 100%) !important;
  backdrop-filter: blur(24px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(190%) !important;
  border-right: 1px solid rgba(216, 180, 91, 0.15) !important;
  box-shadow: 6px 0 32px rgba(0, 0, 0, 0.45) !important;
}

.brand-logo-wrap {
  width: 44px !important;
  height: 44px !important;
  border-radius: 12px !important;
  background: var(--gold-metallic-grad) !important;
  box-shadow: 0 4px 18px rgba(216, 180, 91, 0.35), 0 0 28px rgba(216, 180, 91, 0.15) !important;
  position: relative !important;
  transition: transform 0.25s var(--ease-fluid), box-shadow 0.25s var(--ease-fluid) !important;
}

.brand-link:hover .brand-logo-wrap {
  transform: scale(1.05) rotate(-1deg) !important;
  box-shadow: 0 6px 22px rgba(216, 180, 91, 0.45), 0 0 36px rgba(216, 180, 91, 0.25) !important;
}

.brand-logo-wrap::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, transparent 50%);
  pointer-events: none;
}

.brand-logo-text {
  color: #070B16 !important;
  font-family: var(--font-display) !important;
  font-weight: 900 !important;
  font-size: 1.18rem !important;
  letter-spacing: 0.05em !important;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4) !important;
}

.brand-title {
  font-size: 1.18rem !important;
  font-weight: 800 !important;
  letter-spacing: 0.08em !important;
  background: linear-gradient(135deg, #FFFFFF 40%, #EED79D 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  line-height: 1.15 !important;
}

.brand-subtitle {
  font-size: 0.64rem !important;
  letter-spacing: 0.24em !important;
  color: var(--gold-light) !important;
  font-weight: 700 !important;
  opacity: 0.9 !important;
}

/* Sidebar Navigation Items */
.nav-item {
  border-radius: var(--radius-md) !important;
  padding: 0.72rem 1.05rem !important;
  font-size: 0.88rem !important;
  font-weight: 500 !important;
  color: #94A3B8 !important;
  transition: all 0.2s var(--ease-fluid) !important;
  border: 1px solid transparent !important;
  position: relative !important;
}

.nav-item:hover {
  color: var(--text-white) !important;
  background: rgba(255, 255, 255, 0.045) !important;
  border-color: rgba(255, 255, 255, 0.08) !important;
  transform: translateX(4px) !important;
}

.nav-item.active {
  color: #FFFFFF !important;
  background: linear-gradient(90deg, rgba(216, 180, 91, 0.16) 0%, rgba(216, 180, 91, 0.03) 100%) !important;
  border-color: rgba(216, 180, 91, 0.32) !important;
  font-weight: 600 !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06) !important;
}

.nav-item.active::before {
  content: '' !important;
  position: absolute !important;
  left: 0 !important;
  top: 8px !important;
  bottom: 8px !important;
  width: 3.5px !important;
  border-radius: 0 4px 4px 0 !important;
  background: var(--gold-primary) !important;
  box-shadow: 0 0 12px var(--gold-glow), 0 0 4px #D8B45B !important;
}

.nav-item .nav-icon {
  color: #7E8DA6 !important;
  transition: all 0.2s var(--ease-fluid) !important;
}

.nav-item:hover .nav-icon {
  color: #FFFFFF !important;
  transform: scale(1.08) !important;
}

.nav-item.active .nav-icon {
  color: var(--gold-primary) !important;
  filter: drop-shadow(0 0 6px rgba(216, 180, 91, 0.4)) !important;
  transform: scale(1.08) !important;
}

/* User Snippet */
.user-snippet {
  background: rgba(14, 21, 39, 0.8) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--radius-lg) !important;
  padding: 10px 14px !important;
  transition: all 0.22s var(--ease-fluid) !important;
}

.user-snippet:hover {
  background: rgba(21, 31, 56, 0.95) !important;
  border-color: rgba(216, 180, 91, 0.3) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35) !important;
  transform: translateY(-1px) !important;
}

.avatar-wrapper {
  position: relative !important;
}

.avatar-placeholder {
  background: linear-gradient(135deg, rgba(216, 180, 91, 0.3) 0%, rgba(216, 180, 91, 0.1) 100%) !important;
  border: 1.5px solid var(--gold-primary) !important;
  color: var(--gold-bright) !important;
  font-weight: 700 !important;
  box-shadow: 0 0 12px rgba(216, 180, 91, 0.2) !important;
}

.avatar-status-dot {
  position: absolute !important;
  bottom: -1px !important;
  right: -1px !important;
  width: 10px !important;
  height: 10px !important;
  border-radius: 50% !important;
  background: #10B981 !important;
  border: 2px solid #080E1E !important;
  box-shadow: 0 0 8px #10B981 !important;
  animation: radarPulse 2.4s infinite !important;
}

@keyframes radarPulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* ====================================================================
   B. FLOATING GLASS TOPBAR & QUICK NAVIGATION
   ==================================================================== */

.topbar {
  background: rgba(8, 14, 30, 0.65) !important;
  backdrop-filter: blur(24px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(190%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07) !important;
}

.topbar-context-pill {
  background: rgba(14, 21, 39, 0.75) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25) !important;
}

.search-input {
  background: rgba(14, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.09) !important;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25) !important;
  color: #FFFFFF !important;
}

.search-bar:hover .search-input,
.search-input:focus {
  background: rgba(19, 29, 54, 0.95) !important;
  border-color: rgba(216, 180, 91, 0.45) !important;
  box-shadow: 0 0 20px rgba(216, 180, 91, 0.20), 0 4px 16px rgba(0, 0, 0, 0.4) !important;
}

.search-kbd-hint {
  background: rgba(8, 14, 30, 0.9) !important;
  border: 1px solid rgba(216, 180, 91, 0.25) !important;
  color: var(--gold-light) !important;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3) !important;
}

.topbar-pill-stat {
  background: rgba(14, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25) !important;
}

.topbar-pill-stat:hover {
  border-color: rgba(216, 180, 91, 0.35) !important;
  background: rgba(19, 29, 54, 0.95) !important;
}

.topbar-icon-btn {
  background: rgba(14, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.topbar-icon-btn:hover {
  background: rgba(21, 31, 56, 0.95) !important;
  border-color: var(--gold-primary) !important;
  box-shadow: 0 0 16px rgba(216, 180, 91, 0.3) !important;
  transform: translateY(-1px) !important;
}

/* ====================================================================
   C. MASTERPIECE DASHBOARD & STATS GRID
   ==================================================================== */

.hero-section {
  background: linear-gradient(135deg, rgba(14, 21, 39, 0.92) 0%, rgba(9, 14, 28, 0.97) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  box-shadow: 0 20px 60px -10px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
  position: relative !important;
}

.hero-section::before {
  content: '' !important;
  position: absolute !important;
  top: -20% !important;
  right: -5% !important;
  width: 500px !important;
  height: 500px !important;
  background: radial-gradient(circle, rgba(216, 180, 91, 0.09) 0%, rgba(56, 189, 248, 0.04) 50%, transparent 70%) !important;
  filter: blur(60px) !important;
  pointer-events: none !important;
}

.hero-title {
  font-family: var(--font-display) !important;
  font-size: 2.45rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.035em !important;
  color: #FFFFFF !important;
  line-height: 1.15 !important;
}

.hero-title .title-accent {
  background: linear-gradient(135deg, #FFF1D6 0%, #D8B45B 50%, #E8CA83 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  display: inline-block !important;
}

.hero-eyebrow {
  background: rgba(16, 185, 129, 0.10) !important;
  border: 1px solid rgba(16, 185, 129, 0.28) !important;
  color: #10B981 !important;
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.15) !important;
}

.hero-mission-banner {
  background: rgba(216, 180, 91, 0.08) !important;
  border: 1px solid rgba(216, 180, 91, 0.25) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25) !important;
}

.hero-progress-console {
  background: rgba(10, 16, 32, 0.88) !important;
  border: 1px solid rgba(255, 255, 255, 0.09) !important;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.07) !important;
}

/* Stat Cards */
.stat-card {
  background: var(--bg-obsidian-card) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: var(--radius-lg) !important;
  padding: 22px !important;
  box-shadow: var(--shadow-cinematic-card) !important;
  transition: transform 0.25s var(--ease-fluid), border-color 0.25s ease, box-shadow 0.25s ease !important;
}

.stat-card:hover {
  transform: translateY(-5px) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  box-shadow: var(--shadow-cinematic-hover) !important;
}

.stat-icon-wrapper {
  border-radius: 10px !important;
  transition: transform 0.22s var(--ease-fluid) !important;
}

.stat-card:hover .stat-icon-wrapper {
  transform: scale(1.1) !important;
}

.stat-value {
  font-family: var(--font-display) !important;
  font-size: 1.85rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em !important;
  color: #FFFFFF !important;
}

.stat-micro-track {
  height: 5px !important;
  border-radius: 999px !important;
  background: rgba(255, 255, 255, 0.08) !important;
  margin-top: 8px !important;
  overflow: hidden !important;
}

.stat-micro-fill {
  height: 100% !important;
  border-radius: 999px !important;
  transition: width 0.6s var(--ease-fluid) !important;
}

.stat-day-dot.active {
  background: #FF6B4A !important;
  box-shadow: 0 0 10px rgba(255, 107, 74, 0.6) !important;
}

.stat-day-dot.today-ring {
  outline: 2px solid var(--gold-primary) !important;
  outline-offset: 2px !important;
}

/* Daily Agenda */
.daily-agenda-card {
  background: var(--bg-obsidian-card) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: var(--shadow-cinematic-card) !important;
}

.agenda-task-item {
  background: rgba(10, 16, 32, 0.6) !important;
  border: 1px solid rgba(255, 255, 255, 0.05) !important;
  border-radius: var(--radius-md) !important;
  transition: all 0.2s var(--ease-fluid) !important;
}

.agenda-task-item:hover {
  background: rgba(14, 21, 42, 0.85) !important;
  border-color: rgba(216, 180, 91, 0.25) !important;
  transform: translateX(3px) !important;
}

.agenda-task-item.completed {
  border-color: rgba(16, 185, 129, 0.25) !important;
}

.agenda-task-item.completed .agenda-check-indicator {
  background: #10B981 !important;
  color: #050814 !important;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5) !important;
}

/* Activity Bars */
.activity-card {
  background: var(--bg-obsidian-card) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: var(--shadow-cinematic-card) !important;
}

.activity-bar-fill {
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold-dark) 100%) !important;
  border-radius: 6px !important;
  box-shadow: 0 0 10px rgba(216, 180, 91, 0.3) !important;
  transition: height 0.5s var(--ease-fluid) !important;
}

.activity-bar-fill.inactive {
  background: rgba(255, 255, 255, 0.06) !important;
  box-shadow: none !important;
}

/* Quick Action Tiles */
.action-card {
  background: var(--bg-obsidian-card) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  box-shadow: var(--shadow-cinematic-card) !important;
  transition: all 0.25s var(--ease-fluid) !important;
}

.action-card:hover {
  background: rgba(19, 29, 54, 0.95) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-cinematic-hover) !important;
}

/* ====================================================================
   D. DICTIONARY & CEFR BOOK CARDS
   ==================================================================== */

.book-card {
  background: var(--bg-obsidian-card) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: var(--radius-xl) !important;
  box-shadow: var(--shadow-cinematic-card) !important;
  transition: transform 0.25s var(--ease-fluid), border-color 0.25s ease, box-shadow 0.25s ease !important;
}

.book-card:hover {
  transform: translateY(-5px) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  box-shadow: var(--shadow-cinematic-hover) !important;
}

.book-cover {
  border-radius: var(--radius-lg) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5) !important;
  transition: transform 0.25s var(--ease-fluid) !important;
}

.book-card:hover .book-cover {
  transform: scale(1.03) !important;
}

.level-badge {
  font-weight: 800 !important;
  letter-spacing: 0.06em !important;
  border-radius: var(--radius-full) !important;
  padding: 4px 10px !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3) !important;
}

.unit-card {
  background: var(--bg-obsidian-card) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  box-shadow: var(--shadow-cinematic-card) !important;
  transition: all 0.22s var(--ease-fluid) !important;
}

.unit-card:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(216, 180, 91, 0.3) !important;
  box-shadow: var(--shadow-cinematic-hover) !important;
}

/* ====================================================================
   E. 3D FLASHCARD LEARNING EXPERIENCE
   ==================================================================== */

.flashcard-front,
.flashcard-back {
  background: linear-gradient(145deg, rgba(19, 27, 49, 0.95) 0%, rgba(10, 15, 30, 0.98) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.28) !important;
  box-shadow: 0 24px 64px -12px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
  border-radius: var(--radius-2xl) !important;
}

.word-english {
  font-size: 2.35rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.025em !important;
  line-height: 1.15 !important;
  margin: 0 0 4px 0 !important;
  color: #FFFFFF !important;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.4) !important;
}

.word-pronunciation {
  background: rgba(216, 180, 91, 0.09) !important;
  border: 1px solid rgba(216, 180, 91, 0.28) !important;
  color: var(--gold-light) !important;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25) !important;
  padding: 5px 16px !important;
  border-radius: var(--radius-full) !important;
}

.word-pronunciation:hover {
  background: rgba(216, 180, 91, 0.18) !important;
  border-color: var(--gold-primary) !important;
  box-shadow: 0 0 16px rgba(216, 180, 91, 0.3) !important;
  transform: scale(1.04) !important;
}

.word-uzbek {
  font-size: 2.35rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.025em !important;
  color: var(--gold-primary) !important;
  text-shadow: 0 0 20px rgba(216, 180, 91, 0.35) !important;
}

.word-example-wrapper {
  background: rgba(8, 13, 26, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-left: 3.5px solid var(--gold-primary) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35) !important;
}

/* Learning Controls */
.control-btn {
  border-radius: var(--radius-md) !important;
  padding: 12px 24px !important;
  font-size: 0.92rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.02em !important;
  transition: all 0.2s var(--ease-fluid) !important;
}

.control-btn:active {
  transform: scale(0.96) !important;
}

.control-btn.btn-know {
  background: rgba(16, 185, 129, 0.14) !important;
  border: 1px solid rgba(16, 185, 129, 0.40) !important;
  color: #10B981 !important;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.15) !important;
}

.control-btn.btn-know:hover {
  background: #10B981 !important;
  color: #050814 !important;
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.45) !important;
  transform: translateY(-2px) !important;
}

.control-btn.btn-dont-know {
  background: rgba(244, 63, 94, 0.12) !important;
  border: 1px solid rgba(244, 63, 94, 0.35) !important;
  color: #FB7185 !important;
  box-shadow: 0 4px 16px rgba(244, 63, 94, 0.15) !important;
}

.control-btn.btn-dont-know:hover {
  background: #F43F5E !important;
  color: #FFFFFF !important;
  box-shadow: 0 6px 24px rgba(244, 63, 94, 0.45) !important;
  transform: translateY(-2px) !important;
}

/* ====================================================================
   F. LUXURY BUTTONS & FORM ELEMENTS
   ==================================================================== */

.btn-primary {
  background: var(--gold-metallic-grad) !important;
  color: #070B16 !important;
  font-weight: 700 !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  box-shadow: 0 4px 18px rgba(216, 180, 91, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.5) !important;
  transition: all 0.22s var(--ease-fluid) !important;
}

.btn-primary:hover {
  box-shadow: 0 8px 28px rgba(216, 180, 91, 0.5), 0 0 16px rgba(216, 180, 91, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.7) !important;
  transform: translateY(-2px) !important;
  color: #050814 !important;
}

.btn-primary:active {
  transform: scale(0.97) !important;
}

.btn-secondary {
  background: rgba(14, 21, 39, 0.8) !important;
  border: 1px solid rgba(216, 180, 91, 0.25) !important;
  color: var(--text-white) !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3) !important;
  transition: all 0.22s var(--ease-fluid) !important;
}

.btn-secondary:hover {
  background: rgba(21, 31, 56, 0.95) !important;
  border-color: var(--gold-primary) !important;
  color: var(--gold-bright) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4), 0 0 14px rgba(216, 180, 91, 0.2) !important;
  transform: translateY(-2px) !important;
}

.btn-secondary:active {
  transform: scale(0.97) !important;
}

/* ====================================================================
   G. MOBILE BOTTOM NAVIGATION DOCK (RESPONSIVE LUXURY)
   ==================================================================== */

.mobile-bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: flex !important;
    position: fixed !important;
    bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important;
    left: 14px !important;
    right: 14px !important;
    max-width: 480px !important;
    margin: 0 auto !important;
    height: var(--mobile-nav-height) !important;
    background: rgba(9, 14, 28, 0.88) !important;
    backdrop-filter: blur(24px) saturate(200%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
    border: 1px solid rgba(216, 180, 91, 0.24) !important;
    border-radius: 22px !important;
    box-shadow: 0 14px 44px rgba(0, 0, 0, 0.75), 0 0 20px rgba(216, 180, 91, 0.12) !important;
    z-index: 1000 !important;
    align-items: center !important;
    justify-content: space-around !important;
    padding: 0 8px !important;
  }

  .mobile-nav-link {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 3px !important;
    color: #7E8DA6 !important;
    text-decoration: none !important;
    padding: 6px 12px !important;
    border-radius: 14px !important;
    position: relative !important;
    transition: all 0.2s var(--ease-fluid) !important;
    flex: 1 !important;
    min-width: 0 !important;
  }

  .mobile-nav-link:active {
    transform: scale(0.92) !important;
  }

  .mobile-nav-link .mobile-nav-icon {
    width: 22px !important;
    height: 22px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: transform 0.2s var(--ease-fluid), color 0.2s ease !important;
  }

  .mobile-nav-link .mobile-nav-text {
    font-size: 0.65rem !important;
    font-weight: 600 !important;
    letter-spacing: 0.02em !important;
    transition: color 0.2s ease !important;
    white-space: nowrap !important;
  }

  .mobile-nav-link.active {
    color: var(--gold-light) !important;
  }

  .mobile-nav-link.active .mobile-nav-icon {
    color: var(--gold-primary) !important;
    transform: translateY(-2px) scale(1.1) !important;
    filter: drop-shadow(0 0 8px rgba(216, 180, 91, 0.5)) !important;
  }

  .mobile-nav-link.active .mobile-nav-text {
    color: #FFFFFF !important;
    font-weight: 700 !important;
  }

  .mobile-nav-link.active::after {
    content: '' !important;
    position: absolute !important;
    bottom: 4px !important;
    width: 14px !important;
    height: 3px !important;
    border-radius: 999px !important;
    background: var(--gold-primary) !important;
    box-shadow: 0 0 8px var(--gold-primary) !important;
  }

  .mobile-nav-badge {
    position: absolute !important;
    top: 2px !important;
    right: 14px !important;
    min-width: 16px !important;
    height: 16px !important;
    border-radius: 999px !important;
    background: var(--color-error) !important;
    color: #FFFFFF !important;
    font-size: 0.6rem !important;
    font-weight: 700 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 4px !important;
    border: 1.5px solid #090E1C !important;
  }

  /* Ensure content is not covered by floating bottom dock */
  .content-body,
  .main-content {
    padding-bottom: calc(var(--mobile-nav-height) + 36px + env(safe-area-inset-bottom, 0px)) !important;
  }

  /* Hamburger transform animation into 'X' */
  .hamburger-btn {
    position: relative !important;
    width: 40px !important;
    height: 40px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 5px !important;
    background: rgba(14, 21, 39, 0.75) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 10px !important;
  }

  .hamburger-btn span {
    display: block !important;
    width: 18px !important;
    height: 2px !important;
    background: var(--text-white) !important;
    border-radius: 999px !important;
    transition: all 0.25s var(--ease-fluid) !important;
  }

  .hamburger-btn.is-active span:nth-child(1),
  .hamburger-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg) !important;
    background: var(--gold-primary) !important;
  }

  .hamburger-btn.is-active span:nth-child(2),
  .hamburger-btn.active span:nth-child(2) {
    opacity: 0 !important;
    transform: translateX(8px) !important;
  }

  .hamburger-btn.is-active span:nth-child(3),
  .hamburger-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg) !important;
    background: var(--gold-primary) !important;
  }

  .mobile-logo-link {
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    text-decoration: none !important;
  }

  .mobile-logo-crest {
    width: 34px !important;
    height: 34px !important;
    border-radius: 8px !important;
  }

  .mobile-logo-crest .brand-logo-text {
    font-size: 0.92rem !important;
  }
}

/* ====================================================================
   H. ACCESSIBILITY & PREFERS-REDUCED-MOTION
   ==================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ====================================================================
   VISUAL VOCAB ENGINE — Flashcard Image Frame
   ==================================================================== */

/* ── Card Visual Frame — Premium Image Display ── */
.card-visual-frame {
  width: 100%;
  max-width: 440px;
  height: 220px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin: 0 auto 6px auto;
  background: #070B16;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  border: 1px solid rgba(216, 180, 91, 0.2);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
}

.card-visual-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 85%,
    rgba(7, 11, 22, 0.25) 100%
  );
  pointer-events: none;
  border-radius: var(--radius-lg);
}

.card-vocab-img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: #070B16;
  border-radius: var(--radius-lg);
  display: block;
  transition: opacity var(--transition-base);
}

@media (max-width: 768px) {
  .card-visual-frame {
    height: 190px;
  }
  .card-vocab-img {
    height: 190px;
  }
}

@media (max-width: 480px) {
  .card-visual-frame {
    height: 180px;
  }
  .card-vocab-img {
    height: 180px;
  }
}

@media (max-width: 360px) {
  .card-visual-frame {
    height: 160px;
  }
  .card-vocab-img {
    height: 160px;
  }
}

/* ── Test & Exercise Visual Photo Frames ── */
.test-visual-frame,
.exercise-visual-frame {
  width: 100%;
  max-width: 360px;
  height: 160px;
  margin: var(--space-2) auto var(--space-4) auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #070B16;
  border: 1px solid rgba(216, 180, 91, 0.16);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.test-vocab-img,
.exercise-vocab-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #070B16;
  border-radius: var(--radius-lg);
  display: block;
  transition: opacity var(--transition-base);
}

@media (max-width: 480px) {
  .test-visual-frame,
  .exercise-visual-frame {
    height: 140px;
    max-width: 100%;
  }
}

/* ====================================================================
   CEFR ROADMAP — Dictionary Page
   ==================================================================== */

.cefr-roadmap-container {
  background: var(--card-bg);
  border: 1px solid var(--border-navy);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  overflow: hidden;
}

.cefr-roadmap-header {
  margin-bottom: var(--space-5);
}

.cefr-roadmap-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.cefr-roadmap-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-medium);
  margin: 0;
}

.cefr-tiers-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
}

@media (max-width: 768px) {
  .cefr-tiers-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .cefr-tiers-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
  }
}

.cefr-tier-card {
  background: rgba(11, 16, 32, 0.7);
  border: 1.5px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.cefr-tier-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--tier-color, var(--gold-primary));
  border-radius: var(--radius-xs);
}

.cefr-tier-card:hover,
.cefr-tier-card:focus {
  border-color: var(--tier-color, var(--gold-primary));
  background: rgba(21, 27, 45, 0.95);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  outline: none;
}

.cefr-tier-card.active {
  border-color: var(--tier-color, var(--gold-primary));
  background: rgba(21, 27, 45, 0.95);
  box-shadow: 0 0 0 2px var(--tier-color, var(--gold-primary)), 0 6px 20px rgba(0,0,0,0.3);
}

.cefr-tier-badge {
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--tier-color, var(--gold-primary));
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}

.cefr-tier-name {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 2px;
}

.cefr-tier-desc {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.cefr-tier-stats {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-2);
}

.cefr-tier-stats span {
  font-size: 0.7rem;
  color: var(--text-medium);
  font-weight: 500;
}

.cefr-tier-progress-bar {
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 3px;
}

.cefr-tier-progress-fill {
  height: 100%;
  background: var(--tier-color, var(--gold-primary));
  border-radius: 2px;
  transition: width 0.8s ease;
}

.cefr-tier-progress-label {
  font-size: 0.65rem;
  color: var(--tier-color, var(--gold-primary));
  font-weight: 600;
}


/* ====================================================================
   SENIOR UI/UX DESIGN SYSTEM — PRODUCTION LUXURY DARK DASHBOARD
   ==================================================================== */

/* --- 1. Atmospheric Dark Luxury Background & Typography --- */
body {
  background: radial-gradient(ellipse 90% 50% at 50% -12%, rgba(216, 180, 91, 0.045) 0%, transparent 65%),
              radial-gradient(ellipse 70% 50% at 100% 100%, rgba(59, 130, 246, 0.025) 0%, transparent 60%),
              linear-gradient(180deg, #060913 0%, #080D1E 45%, #060913 100%) !important;
  background-attachment: fixed !important;
  color: #94A3B8 !important;
  font-family: 'Inter', system-ui, -apple-system, sans-serif !important;
}

/* --- 2. Left Sidebar Navigation Panel --- */
.sidebar {
  background: linear-gradient(180deg, #050812 0%, #070B18 100%) !important;
  border-right: 1px solid rgba(216, 180, 91, 0.12) !important;
  box-shadow: 4px 0 28px rgba(0, 0, 0, 0.45) !important;
}

.brand-logo-wrap {
  background: linear-gradient(135deg, #F8E5B5 0%, #D8B45B 50%, #B28E2E 100%) !important;
  box-shadow: 0 4px 14px rgba(216, 180, 91, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.6) !important;
  border-radius: 11px !important;
}

.brand-title {
  color: #FFFFFF !important;
  font-weight: 800 !important;
  letter-spacing: 0.06em !important;
}

.brand-subtitle {
  color: #D8B45B !important;
  font-weight: 700 !important;
  letter-spacing: 0.22em !important;
}

.sidebar-collapse-toggle {
  background: rgba(255, 255, 255, 0.03) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 8px !important;
  color: #94A3B8 !important;
  transition: all 0.2s ease !important;
}

.sidebar-collapse-toggle:hover {
  background: rgba(216, 180, 91, 0.12) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  color: #D8B45B !important;
}

.nav-item {
  height: 44px !important;
  padding: 0 14px !important;
  border-radius: 12px !important;
  font-size: 0.88rem !important;
  font-weight: 500 !important;
  color: #8F9BB3 !important;
  gap: 12px !important;
  margin-bottom: 3px !important;
  border: 1px solid transparent !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04) !important;
  color: #F8FAFC !important;
  border-color: rgba(255, 255, 255, 0.06) !important;
}

.nav-item:hover .nav-icon {
  color: #F8FAFC !important;
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(216, 180, 91, 0.14) 0%, rgba(216, 180, 91, 0.02) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.24) !important;
  color: #FFFFFF !important;
  font-weight: 600 !important;
}

.nav-item.active::before {
  content: '' !important;
  position: absolute !important;
  left: 0 !important;
  top: 9px !important;
  bottom: 9px !important;
  width: 3.5px !important;
  border-radius: 0 4px 4px 0 !important;
  background: #D8B45B !important;
  box-shadow: 0 0 12px rgba(216, 180, 91, 0.6) !important;
}

.nav-item.active .nav-icon {
  color: #D8B45B !important;
  filter: drop-shadow(0 0 8px rgba(216, 180, 91, 0.4)) !important;
}

.nav-badge {
  font-size: 0.62rem !important;
  padding: 2px 7px !important;
  border-radius: 999px !important;
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  color: #7B879E !important;
  font-weight: 600 !important;
  letter-spacing: 0.03em !important;
  margin-left: auto !important;
  flex-shrink: 0 !important;
}

.sidebar-footer {
  background: rgba(6, 9, 18, 0.95) !important;
  border-top: 1px solid rgba(255, 255, 255, 0.06) !important;
  padding: 12px 14px !important;
}

.user-snippet {
  background: rgba(255, 255, 255, 0.02) !important;
  border: 1px solid rgba(255, 255, 255, 0.05) !important;
  border-radius: 12px !important;
  padding: 8px 10px !important;
  transition: all 0.2s ease !important;
}

.user-snippet:hover {
  background: rgba(255, 255, 255, 0.05) !important;
  border-color: rgba(216, 180, 91, 0.22) !important;
}

.avatar-wrapper {
  width: 38px !important;
  height: 38px !important;
  border: 1.5px solid #D8B45B !important;
  box-shadow: 0 0 10px rgba(216, 180, 91, 0.25) !important;
}

.user-details {
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}

.user-name {
  font-size: 0.86rem !important;
  font-weight: 600 !important;
  color: #FFFFFF !important;
}

.user-role {
  font-size: 0.72rem !important;
  color: #8F9BB3 !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}

/* --- 3. Topbar Navigation Panel --- */
.topbar {
  background: rgba(6, 9, 19, 0.65) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
  height: 70px !important;
}

.topbar-context-pill {
  height: 38px !important;
  padding: 0 14px !important;
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(216, 180, 91, 0.2) !important;
  border-radius: 999px !important;
  font-size: 0.75rem !important;
  font-weight: 600 !important;
  color: #D8B45B !important;
  text-transform: uppercase !important;
  letter-spacing: 0.06em !important;
}

.topbar-context-pill .context-dot {
  width: 7px !important;
  height: 7px !important;
  background: #D8B45B !important;
  box-shadow: 0 0 8px rgba(216, 180, 91, 0.6) !important;
}

.search-input {
  height: 42px !important;
  background: rgba(13, 21, 39, 0.65) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 999px !important;
  color: #F8FAFC !important;
  font-size: 0.86rem !important;
  transition: all 0.2s ease !important;
}

.search-bar:hover .search-input {
  border-color: rgba(216, 180, 91, 0.38) !important;
  box-shadow: 0 0 18px rgba(216, 180, 91, 0.12) !important;
  background: rgba(15, 25, 46, 0.85) !important;
}

.search-kbd-hint {
  background: rgba(8, 13, 26, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  color: #7B879E !important;
  border-radius: 6px !important;
  font-size: 0.68rem !important;
  padding: 2px 7px !important;
}

.topbar-pill-stat {
  height: 38px !important;
  padding: 0 14px !important;
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 999px !important;
  color: #F8FAFC !important;
  font-weight: 600 !important;
  font-size: 0.82rem !important;
  transition: all 0.2s ease !important;
}

.topbar-pill-stat:hover {
  border-color: rgba(216, 180, 91, 0.35) !important;
  background: rgba(16, 26, 48, 0.9) !important;
}

.topbar-icon-btn {
  width: 38px !important;
  height: 38px !important;
  border-radius: 50% !important;
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #8F9BB3 !important;
  transition: all 0.2s ease !important;
}

.topbar-icon-btn:hover {
  border-color: rgba(216, 180, 91, 0.4) !important;
  color: #D8B45B !important;
  background: rgba(16, 26, 48, 0.95) !important;
  box-shadow: 0 0 14px rgba(216, 180, 91, 0.2) !important;
}

/* --- 4. Main Hero Banner Section --- */
.hero-section {
  background: linear-gradient(135deg, rgba(15, 24, 44, 0.92) 0%, rgba(9, 14, 28, 0.96) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.18) !important;
  border-radius: 24px !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08) !important;
  padding: 38px 42px !important;
  position: relative !important;
  overflow: hidden !important;
}

.hero-section::before {
  content: '' !important;
  position: absolute !important;
  top: -20% !important;
  right: -10% !important;
  width: 480px !important;
  height: 480px !important;
  border-radius: 50% !important;
  background: radial-gradient(circle, rgba(216, 180, 91, 0.07) 0%, transparent 70%) !important;
  filter: blur(60px) !important;
  pointer-events: none !important;
}

.hero-eyebrow {
  background: rgba(16, 185, 129, 0.08) !important;
  border: 1px solid rgba(16, 185, 129, 0.22) !important;
  color: #10B981 !important;
  border-radius: 999px !important;
  padding: 5px 14px !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.08em !important;
}

.hero-title {
  font-size: 2.35rem !important;
  font-weight: 800 !important;
  line-height: 1.18 !important;
  color: #FFFFFF !important;
  letter-spacing: -0.03em !important;
  margin-bottom: 12px !important;
}

.hero-title .title-accent {
  background: linear-gradient(135deg, #FDE68A 0%, #D8B45B 50%, #B58F2E 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  display: inline-block !important;
}

.hero-subtitle {
  font-size: 0.96rem !important;
  color: #94A3B8 !important;
  line-height: 1.65 !important;
  max-width: 680px !important;
  margin-bottom: 20px !important;
}

.hero-mission-banner {
  background: rgba(216, 180, 91, 0.07) !important;
  border: 1px solid rgba(216, 180, 91, 0.18) !important;
  border-radius: 12px !important;
  padding: 9px 16px !important;
  color: #E2C784 !important;
  font-size: 0.84rem !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px !important;
  margin-bottom: 24px !important;
}

.hero-actions .btn {
  height: 48px !important;
  padding: 0 24px !important;
  border-radius: 12px !important;
  font-size: 0.92rem !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 10px !important;
}

.hero-actions .btn-primary {
  background: linear-gradient(135deg, #F5DE9B 0%, #D8B45B 50%, #B58F2E 100%) !important;
  color: #060913 !important;
  font-weight: 700 !important;
  border: 1px solid rgba(255, 255, 255, 0.35) !important;
  box-shadow: 0 4px 18px rgba(216, 180, 91, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.5) !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.hero-actions .btn-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 26px rgba(216, 180, 91, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.7) !important;
  color: #04060D !important;
}

.hero-actions .btn-secondary {
  background: rgba(13, 21, 39, 0.7) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  color: #F8FAFC !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25) !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.hero-actions .btn-secondary:hover {
  background: rgba(20, 31, 56, 0.9) !important;
  border-color: rgba(216, 180, 91, 0.45) !important;
  color: #FDE68A !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35), 0 0 14px rgba(216, 180, 91, 0.15) !important;
}

.hero-progress-console {
  background: rgba(10, 16, 32, 0.85) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 20px !important;
  padding: 22px !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4) !important;
}

/* --- 5. Statistics Cards (Uniform & Balanced Rhythm) --- */
.stats-grid {
  display: grid !important;
  grid-template-columns: repeat(5, 1fr) !important;
  gap: 16px !important;
  margin-bottom: 32px !important;
}

.stat-card {
  min-height: 195px !important;
  padding: 22px 20px !important;
  border-radius: 18px !important;
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.06) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25) !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.stat-card:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(216, 180, 91, 0.28) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(216, 180, 91, 0.08) !important;
}

.stat-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  margin-bottom: 12px !important;
}

.stat-icon-wrapper {
  width: 40px !important;
  height: 40px !important;
  border-radius: 10px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-shrink: 0 !important;
}

.stat-trend {
  font-size: 0.70rem !important;
  font-weight: 600 !important;
  padding: 3px 9px !important;
  border-radius: 999px !important;
}

.stat-value {
  font-size: 1.85rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
  line-height: 1.15 !important;
  letter-spacing: -0.02em !important;
  margin: 6px 0 2px 0 !important;
  font-family: 'Plus Jakarta Sans', var(--font-display), sans-serif !important;
}

.stat-value-sub {
  font-size: 0.82rem !important;
  font-weight: 500 !important;
  color: #7B879E !important;
}

.stat-label {
  font-size: 0.82rem !important;
  color: #94A3B8 !important;
  font-weight: 500 !important;
  margin-bottom: 8px !important;
}

/* --- 6. Quick Action Cards --- */
.action-card {
  background: rgba(13, 21, 39, 0.72) !important;
  border: 1px solid rgba(255, 255, 255, 0.06) !important;
  border-radius: 18px !important;
  padding: 22px !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  text-decoration: none !important;
}

.action-card:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(216, 180, 91, 0.28) !important;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.38) !important;
}

.action-card-title {
  color: #FFFFFF !important;
  font-weight: 700 !important;
  font-size: 1.02rem !important;
  margin-top: 8px !important;
}

.action-card-desc {
  color: #8F9BB3 !important;
  font-size: 0.82rem !important;
  line-height: 1.45 !important;
}

/* --- 7. Mobile Responsive Refinement --- */
@media (max-width: 768px) {
  .content-body,
  .main-content {
    padding-bottom: calc(75px + 40px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .hero-section {
    padding: 26px 20px !important;
    border-radius: 20px !important;
    margin-bottom: 20px !important;
  }

  .hero-title {
    font-size: 1.75rem !important;
    line-height: 1.25 !important;
  }

  .hero-actions {
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
  }

  .hero-actions .btn {
    width: 100% !important;
    justify-content: center !important;
    height: 46px !important;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
    margin-bottom: 24px !important;
  }

  .stat-card {
    min-height: 165px !important;
    padding: 16px 14px !important;
  }

  .stat-value {
    font-size: 1.55rem !important;
  }

  .quick-actions-grid {
    grid-template-columns: repeat(1, 1fr) !important;
    gap: 12px !important;
  }
}


/* ====================================================================
   SENIOR UI/UX DESIGN SYSTEM — ALL PAGES & COMPLETE ECOSYSTEM UPDATE
   Covers:
   - Page Banners (Dictionary, Books, Topics, Review, Settings, Results)
   - Books Library (Cards, Badges, Book Covers, Actions)
   - Grammar & Topics (Categories, Cards, Quiz, Progress)
   - Spaced Repetition (Queue, Tabs, Flashcard, Empty States)
   - Test Mode (Question navigator, Options, Timer, Actions)
   - Exercise Mode (2x2 Grid Options, Audio, Prompts)
   - Results & Analytics (Score Gauges, Grades, Metrics)
   - Settings & Profile (Range Sliders, Inputs, Data Backup)
   - Modals & Global Search (Ctrl+K, Filters, Keyboard hints, Trophies)
   - Buttons System (Default, Hover, Focus, Active, Disabled)
   ==================================================================== */

/* --- 1. Universal Page Banners --- */
.page-header-banner,
.dictionary-section .section-hero,
.books-hero-banner,
.topics-hero-banner,
.review-hero-banner,
.settings-hero-banner {
  background: linear-gradient(135deg, rgba(15, 24, 44, 0.92) 0%, rgba(9, 14, 28, 0.96) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.18) !important;
  border-radius: 24px !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08) !important;
  padding: 34px 38px !important;
  margin-bottom: 28px !important;
  position: relative !important;
  overflow: hidden !important;
}

/* Breadcrumbs Luxury Pill */
.breadcrumbs {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  border-radius: 999px !important;
  padding: 6px 16px !important;
  font-size: 0.80rem !important;
  font-weight: 500 !important;
  color: #94A3B8 !important;
  backdrop-filter: blur(12px) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25) !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  margin-bottom: 20px !important;
}

.breadcrumbs a {
  color: #CBD5E1 !important;
  transition: color 0.18s ease !important;
}

.breadcrumbs a:hover {
  color: #D8B45B !important;
}

.breadcrumb-separator {
  color: #D8B45B !important;
  opacity: 0.6 !important;
}

.breadcrumb-current {
  color: #D8B45B !important;
  font-weight: 600 !important;
}

/* --- 2. Books Library Page (Kitoblar) --- */
.books-library-grid,
.pdf-books-grid {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 20px !important;
  margin-bottom: 32px !important;
}

@media (max-width: 1024px) {
  .books-library-grid,
  .pdf-books-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 640px) {
  .books-library-grid,
  .pdf-books-grid {
    grid-template-columns: repeat(1, 1fr) !important;
  }
}

.pdf-book-card,
.book-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 20px !important;
  padding: 24px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25) !important;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  position: relative !important;
  overflow: hidden !important;
}

.pdf-book-card:hover,
.book-card:hover {
  transform: translateY(-4px) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.45), 0 0 16px rgba(216, 180, 91, 0.08) !important;
}

.book-card-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  margin-bottom: 16px !important;
}

.book-icon-badge {
  width: 50px !important;
  height: 50px !important;
  border-radius: 14px !important;
  background: linear-gradient(135deg, rgba(216, 180, 91, 0.16) 0%, rgba(216, 180, 91, 0.04) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.28) !important;
  color: #D8B45B !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2) !important;
  flex-shrink: 0 !important;
}

.book-title {
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
  margin: 10px 0 4px 0 !important;
  letter-spacing: -0.01em !important;
  font-family: 'Plus Jakarta Sans', var(--font-display), sans-serif !important;
}

.book-subtitle {
  font-size: 0.82rem !important;
  color: #94A3B8 !important;
  line-height: 1.45 !important;
  margin-bottom: 16px !important;
}

.book-meta-chips {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 8px !important;
  margin-bottom: 18px !important;
}

.book-meta-chip {
  font-size: 0.72rem !important;
  padding: 4px 10px !important;
  border-radius: 8px !important;
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #CBD5E1 !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 5px !important;
}

/* --- 3. Unit Cards (Book Details View) --- */
.units-grid {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 16px !important;
  margin-bottom: 32px !important;
}

@media (max-width: 768px) {
  .units-grid {
    grid-template-columns: repeat(1, 1fr) !important;
  }
}

.unit-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 18px !important;
  padding: 20px 22px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.22) !important;
  position: relative !important;
  overflow: hidden !important;
}

.unit-card:hover {
  transform: translateY(-2px) !important;
  border-color: rgba(216, 180, 91, 0.32) !important;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35) !important;
}

.unit-number-pill {
  width: 44px !important;
  height: 44px !important;
  border-radius: 12px !important;
  background: rgba(216, 180, 91, 0.12) !important;
  border: 1px solid rgba(216, 180, 91, 0.28) !important;
  color: #D8B45B !important;
  font-weight: 800 !important;
  font-size: 1rem !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  line-height: 1 !important;
  flex-shrink: 0 !important;
}

.unit-card-title {
  font-size: 1.05rem !important;
  font-weight: 700 !important;
  color: #FFFFFF !important;
  margin-bottom: 2px !important;
}

.unit-card-desc {
  font-size: 0.80rem !important;
  color: #94A3B8 !important;
}

/* --- 4. Grammar Topics Page (Mavzular) --- */
.topics-grid,
.grammar-grid {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 18px !important;
  margin-bottom: 32px !important;
}

@media (max-width: 768px) {
  .topics-grid,
  .grammar-grid {
    grid-template-columns: repeat(1, 1fr) !important;
  }
}

.topic-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 18px !important;
  padding: 22px !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.22) !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
}

.topic-card:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(40, 201, 149, 0.35) !important;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35) !important;
}

.topic-card-title {
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
  margin-bottom: 4px !important;
}

/* --- 5. Spaced Repetition Review Page (Takrorlash) --- */
.review-tabs {
  display: flex !important;
  gap: 10px !important;
  margin-bottom: 24px !important;
  flex-wrap: wrap !important;
}

.review-tab-btn {
  height: 42px !important;
  padding: 0 18px !important;
  border-radius: 12px !important;
  background: rgba(13, 21, 39, 0.7) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #94A3B8 !important;
  font-weight: 600 !important;
  font-size: 0.85rem !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
}

.review-tab-btn:hover {
  background: rgba(20, 31, 56, 0.9) !important;
  color: #F8FAFC !important;
  border-color: rgba(216, 180, 91, 0.25) !important;
}

.review-tab-btn.active {
  background: linear-gradient(135deg, #F5DE9B 0%, #D8B45B 100%) !important;
  color: #060913 !important;
  border-color: #F8E5B5 !important;
  font-weight: 700 !important;
  box-shadow: 0 4px 14px rgba(216, 180, 91, 0.3) !important;
}

.review-empty-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 24px !important;
  padding: 56px 32px !important;
  text-align: center !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35) !important;
  max-width: 640px !important;
  margin: 20px auto !important;
}

.review-empty-icon {
  width: 64px !important;
  height: 64px !important;
  border-radius: 50% !important;
  background: rgba(16, 185, 129, 0.12) !important;
  border: 1.5px solid rgba(16, 185, 129, 0.3) !important;
  color: #10B981 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 auto 20px auto !important;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.2) !important;
}

/* --- 6. Test & Quiz Experience --- */
.test-container,
.exercise-container {
  max-width: 760px !important;
  margin: 0 auto 32px auto !important;
  background: rgba(13, 21, 39, 0.82) !important;
  border: 1px solid rgba(216, 180, 91, 0.2) !important;
  border-radius: 24px !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5) !important;
  padding: 32px !important;
}

@media (max-width: 480px) {
  .test-container,
  .exercise-container {
    padding: 20px 16px !important;
    border-radius: 18px !important;
  }
}

.test-option-item {
  background: rgba(10, 16, 32, 0.75) !important;
  border: 1.5px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 14px !important;
  padding: 16px 20px !important;
  display: flex !important;
  align-items: center !important;
  gap: 14px !important;
  cursor: pointer !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  color: #F8FAFC !important;
  font-weight: 500 !important;
  font-size: 0.95rem !important;
}

.test-option-item:hover {
  background: rgba(18, 28, 52, 0.9) !important;
  border-color: rgba(216, 180, 91, 0.35) !important;
  transform: translateX(4px) !important;
  color: #FFFFFF !important;
}

.test-option-item.selected {
  background: linear-gradient(90deg, rgba(216, 180, 91, 0.16) 0%, rgba(216, 180, 91, 0.04) 100%) !important;
  border-color: #D8B45B !important;
  box-shadow: 0 0 20px rgba(216, 180, 91, 0.25) !important;
  color: #FFFFFF !important;
  font-weight: 700 !important;
}

.test-nav-pills {
  display: flex !important;
  flex-wrap: wrap !important;
  gap: 8px !important;
  margin-bottom: 24px !important;
}

.test-nav-btn {
  width: 36px !important;
  height: 36px !important;
  border-radius: 10px !important;
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #94A3B8 !important;
  font-weight: 700 !important;
  font-size: 0.85rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  transition: all 0.18s ease !important;
}

.test-nav-btn:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  color: #FFFFFF !important;
}

.test-nav-btn.active {
  background: #D8B45B !important;
  color: #060913 !important;
  border-color: #F8E5B5 !important;
  box-shadow: 0 0 12px rgba(216, 180, 91, 0.5) !important;
}

/* --- 7. Settings Page & Luxury Range Sliders --- */
.settings-section-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 20px !important;
  padding: 28px !important;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3) !important;
  margin-bottom: 24px !important;
}

.settings-input-text {
  width: 100% !important;
  height: 48px !important;
  padding: 0 16px !important;
  background: rgba(8, 13, 26, 0.8) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 12px !important;
  color: #FFFFFF !important;
  font-size: 0.92rem !important;
  transition: all 0.2s ease !important;
}

.settings-input-text:focus {
  outline: none !important;
  border-color: rgba(216, 180, 91, 0.5) !important;
  box-shadow: 0 0 18px rgba(216, 180, 91, 0.2) !important;
  background: rgba(12, 19, 36, 0.95) !important;
}

/* Custom Luxury Range Slider */
input[type="range"] {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 100% !important;
  height: 6px !important;
  background: rgba(255, 255, 255, 0.1) !important;
  border-radius: 999px !important;
  outline: none !important;
  margin: 12px 0 !important;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none !important;
  appearance: none !important;
  width: 22px !important;
  height: 22px !important;
  border-radius: 50% !important;
  background: linear-gradient(135deg, #F8E5B5 0%, #D8B45B 100%) !important;
  cursor: pointer !important;
  border: 2.5px solid #060913 !important;
  box-shadow: 0 0 12px rgba(216, 180, 91, 0.55) !important;
  transition: transform 0.15s ease, box-shadow 0.15s ease !important;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.18) !important;
  box-shadow: 0 0 18px rgba(216, 180, 91, 0.75) !important;
}

/* --- 8. Modals (Global Search & Achievements) --- */
.search-modal-overlay,
.achievements-modal-overlay {
  background: rgba(5, 7, 20, 0.85) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
}

.search-modal,
.achievements-modal {
  background: rgba(11, 17, 34, 0.96) !important;
  border: 1px solid rgba(216, 180, 91, 0.25) !important;
  border-radius: 24px !important;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.65), 0 0 25px rgba(216, 180, 91, 0.12) !important;
}

.search-filter-pill {
  padding: 6px 14px !important;
  border-radius: 999px !important;
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #94A3B8 !important;
  font-size: 0.75rem !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  transition: all 0.18s ease !important;
}

.search-filter-pill:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  color: #FFFFFF !important;
}

.search-filter-pill.active {
  background: linear-gradient(135deg, #F5DE9B 0%, #D8B45B 100%) !important;
  color: #060913 !important;
  border-color: #F8E5B5 !important;
  font-weight: 700 !important;
}

.achievement-card {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 18px !important;
  transition: all 0.2s ease !important;
}

.achievement-card.unlocked {
  border-color: rgba(216, 180, 91, 0.35) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3), 0 0 14px rgba(216, 180, 91, 0.1) !important;
}

.achievement-card-icon {
  background: linear-gradient(135deg, rgba(216, 180, 91, 0.18) 0%, rgba(216, 180, 91, 0.04) 100%) !important;
  border: 1px solid rgba(216, 180, 91, 0.3) !important;
}


/* ====================================================================
   INNER PAGES HIGH-END POLISH & COMPONENT ELEVATION
   ==================================================================== */

/* --- PDF Reader In-App View --- */
.pdf-reader-wrap {
  background: rgba(13, 21, 39, 0.85) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  border-radius: 20px !important;
  overflow: hidden !important;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5) !important;
}

.pdf-reader-toolbar {
  padding: 14px 20px !important;
  background: rgba(10, 16, 32, 0.95) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
}

.pdf-iframe {
  width: 100% !important;
  height: 82vh !important;
  border: none !important;
  background: #1e1e1e !important;
}

/* --- Word List Table View --- */
.word-list-view {
  background: rgba(13, 21, 39, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 20px !important;
  overflow: hidden !important;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3) !important;
  margin-bottom: 32px !important;
}

.word-list-header {
  background: rgba(10, 16, 32, 0.85) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  padding: 14px 20px !important;
  color: #94A3B8 !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.08em !important;
  text-transform: uppercase !important;
  display: grid !important;
  grid-template-columns: 40px 1.5fr 1.5fr 2fr 100px !important;
  align-items: center !important;
  gap: 12px !important;
}

.word-list-row {
  padding: 14px 20px !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04) !important;
  display: grid !important;
  grid-template-columns: 40px 1.5fr 1.5fr 2fr 100px !important;
  align-items: center !important;
  gap: 12px !important;
  transition: background 0.15s ease !important;
}

.word-list-row:last-child {
  border-bottom: none !important;
}

.word-list-row:hover {
  background: rgba(255, 255, 255, 0.03) !important;
}

.word-col-audio-btn {
  background: rgba(216, 180, 91, 0.1) !important;
  border: 1px solid rgba(216, 180, 91, 0.25) !important;
  color: #D8B45B !important;
  width: 28px !important;
  height: 28px !important;
  border-radius: 50% !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  transition: all 0.18s ease !important;
}

.word-col-audio-btn:hover {
  background: #D8B45B !important;
  color: #070B16 !important;
  transform: scale(1.1) !important;
}

/* --- Results Page Analytics --- */
.results-container {
  max-width: 680px !important;
  margin: 0 auto 32px auto !important;
  background: rgba(13, 21, 39, 0.82) !important;
  border: 1px solid rgba(216, 180, 91, 0.22) !important;
  border-radius: 24px !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5) !important;
  padding: 38px 32px !important;
  text-align: center !important;
  position: relative !important;
  overflow: hidden !important;
}

.results-stats {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 14px !important;
  margin: 24px 0 !important;
}

.results-stat-box {
  background: rgba(10, 16, 32, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 16px !important;
  padding: 16px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
}

.results-stat-val {
  font-size: 1.65rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
  font-family: 'Plus Jakarta Sans', var(--font-display), sans-serif !important;
}

.results-stat-label {
  font-size: 0.74rem !important;
  color: #94A3B8 !important;
  margin-top: 4px !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
}

/* --- Global Search Result Items (Spotlight / Raycast Style) --- */
.search-result-item {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 12px 18px !important;
  border-radius: 12px !important;
  margin-bottom: 6px !important;
  background: rgba(255, 255, 255, 0.02) !important;
  border: 1px solid transparent !important;
  cursor: pointer !important;
  transition: all 0.15s ease !important;
}

.search-result-item:hover,
.search-result-item.focused {
  background: rgba(216, 180, 91, 0.1) !important;
  border-color: rgba(216, 180, 91, 0.28) !important;
  transform: translateX(3px) !important;
}

.search-word-en {
  font-size: 1.05rem !important;
  font-weight: 700 !important;
  color: #FFFFFF !important;
}

.search-word-ipa {
  font-size: 0.82rem !important;
  color: #D8B45B !important;
  font-family: var(--font-mono) !important;
}

.search-word-uz {
  font-size: 0.86rem !important;
  color: #94A3B8 !important;
  margin-top: 2px !important;
}

.search-book-tag,
.search-unit-tag {
  font-size: 0.70rem !important;
  padding: 3px 8px !important;
  border-radius: 6px !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #CBD5E1 !important;
  font-weight: 600 !important;
}


/* ====================================================================
   MIDNIGHT GOLD — PREMIUM ACADEMIC INTELLIGENCE SPLASH SCREEN
   ==================================================================== */

.page-loader {
  position: fixed !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100vh !important;
  height: 100dvh !important;
  background: #080D1B !important;
  z-index: 100000 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  overflow: hidden !important;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.5s !important;
}

.page-loader.hide {
  opacity: 0 !important;
  transform: scale(1.02) !important;
  filter: blur(4px) !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* Atmospheric Multi-Layered Midnight Backdrop */
.splash-ambient-backdrop {
  position: absolute !important;
  inset: 0 !important;
  background: radial-gradient(ellipse 90% 65% at 50% 45%, #172342 0%, #0D1426 40%, #080D1B 80%) !important;
  opacity: 0.95 !important;
  pointer-events: none !important;
}

/* Ambient Breathing Gold Glow */
.splash-ambient-glow {
  position: absolute !important;
  width: 440px !important;
  height: 440px !important;
  border-radius: 50% !important;
  background: radial-gradient(circle, rgba(217, 180, 91, 0.08) 0%, rgba(217, 180, 91, 0.02) 45%, transparent 70%) !important;
  filter: blur(50px) !important;
  pointer-events: none !important;
  animation: splashBreatheGlow 4s ease-in-out infinite alternate !important;
}

/* Subtle Architectural Grid Pattern (Academic Intelligence) */
.splash-grid-pattern {
  position: absolute !important;
  inset: 0 !important;
  background-image: 
    linear-gradient(rgba(217, 180, 91, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(217, 180, 91, 0.025) 1px, transparent 1px) !important;
  background-size: 52px 52px !important;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 75%) !important;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 75%) !important;
  pointer-events: none !important;
  opacity: 0.75 !important;
}

.loader-content {
  position: relative !important;
  z-index: 2 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  text-align: center !important;
  padding: 24px !important;
  max-width: 460px !important;
  animation: splashContentFadeIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards !important;
}

@keyframes splashContentFadeIn {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* --- Emblem / Logo Centerpiece --- */
.splash-emblem {
  position: relative !important;
  width: 96px !important;
  height: 96px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-bottom: 24px !important;
}

.splash-emblem-halo {
  position: absolute !important;
  inset: -10px !important;
  border-radius: 50% !important;
  background: radial-gradient(circle, rgba(217, 180, 91, 0.15) 0%, transparent 70%) !important;
  filter: blur(12px) !important;
}

.splash-emblem-ring {
  position: absolute !important;
  inset: 0 !important;
  border-radius: 50% !important;
  border: 1px solid rgba(217, 180, 91, 0.24) !important;
  border-top-color: #F1D58A !important;
  box-shadow: 0 0 16px rgba(217, 180, 91, 0.12) !important;
  animation: splashRingRotate 9s linear infinite !important;
}

.splash-emblem-core {
  width: 76px !important;
  height: 76px !important;
  border-radius: 22px !important;
  background: linear-gradient(145deg, #131B32 0%, #090E1E 100%) !important;
  border: 1.5px solid rgba(217, 180, 91, 0.38) !important;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.55), 
              inset 0 1px 0 rgba(255, 255, 255, 0.14),
              0 0 24px rgba(217, 180, 91, 0.15) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  z-index: 2 !important;
}

/* --- Brand Typography --- */
.splash-brand {
  margin-bottom: 26px !important;
}

.splash-title {
  margin: 0 !important;
  font-family: 'Plus Jakarta Sans', var(--font-display), 'Inter', sans-serif !important;
  font-size: 1.85rem !important;
  font-weight: 800 !important;
  letter-spacing: 0.16em !important;
  color: #F7F8FC !important;
  text-transform: uppercase !important;
  line-height: 1.15 !important;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5) !important;
}

.splash-accent {
  background: linear-gradient(135deg, #F1D58A 0%, #D9B45B 50%, #B28E2E 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  display: inline-block !important;
}

.splash-subtitle {
  margin: 8px 0 0 !important;
  font-size: 0.72rem !important;
  letter-spacing: 0.22em !important;
  font-weight: 600 !important;
  color: #929BB2 !important;
  text-transform: uppercase !important;
}

.splash-authors {
  margin: 8px 0 0 !important;
  font-size: 0.74rem !important;
  color: #7A849E !important;
  font-weight: 500 !important;
  letter-spacing: 0.03em !important;
}

.splash-authors .author-name {
  color: #CBD5E1 !important;
  font-weight: 600 !important;
}

/* --- Loading Indicator --- */
.splash-loader-bar {
  width: 220px !important;
  height: 3.5px !important;
  background: rgba(255, 255, 255, 0.06) !important;
  border-radius: 999px !important;
  overflow: hidden !important;
  margin-bottom: 14px !important;
  position: relative !important;
  border: 1px solid rgba(255, 255, 255, 0.04) !important;
}

.splash-loader-fill {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  bottom: 0 !important;
  width: 45% !important;
  background: linear-gradient(90deg, #D9B45B 0%, #F1D58A 50%, #D9B45B 100%) !important;
  box-shadow: 0 0 10px rgba(217, 180, 91, 0.6) !important;
  border-radius: 999px !important;
  animation: splashBarSweep 1.6s ease-in-out infinite !important;
}

@keyframes splashBarSweep {
  0% { left: -45%; width: 35%; }
  50% { width: 55%; }
  100% { left: 100%; width: 35%; }
}

/* --- Status Text & Dot --- */
.splash-status {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  font-size: 0.78rem !important;
  color: #929BB2 !important;
  font-weight: 500 !important;
  letter-spacing: 0.02em !important;
}

.splash-status-dot {
  width: 6.5px !important;
  height: 6.5px !important;
  border-radius: 50% !important;
  background: #35D6A1 !important;
  box-shadow: 0 0 10px rgba(53, 214, 161, 0.65) !important;
  animation: splashStatusPulse 2s ease-in-out infinite !important;
}

@keyframes splashStatusPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

@keyframes splashRingRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes splashBreatheGlow {
  0% { transform: scale(0.92); opacity: 0.5; }
  100% { transform: scale(1.1); opacity: 0.85; }
}

/* --- Mobile Viewport Polish --- */
@media (max-width: 480px) {
  .loader-content {
    padding: 16px !important;
    max-width: 340px !important;
  }
  .splash-title {
    font-size: 1.55rem !important;
    letter-spacing: 0.14em !important;
  }
  .splash-subtitle {
    font-size: 0.66rem !important;
    letter-spacing: 0.18em !important;
  }
  .splash-authors {
    font-size: 0.70rem !important;
  }
  .splash-loader-bar {
    width: 180px !important;
  }
}