/* ==========================================================================
   Avtodrom24.uz - Ultra-Modern Automotive Dark Design System
   Neon Accents, Glassmorphism, Responsive Grid, Animated Telemetry
   ========================================================================== */

:root {
  --bg-dark: #070a12;
  --bg-darker: #04060a;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 58, 0.9);
  --border-glass: rgba(0, 229, 255, 0.2);
  --border-glass-hover: rgba(0, 229, 255, 0.6);

  /* Component-level semantic tokens (dark defaults) */
  --bg-glass-hard: rgba(15, 23, 42, 0.85);      /* hero-stats, cards with hard bg */
  --bg-glass-deep: rgba(15, 23, 42, 0.95);      /* result card, contact card */
  --bg-glass-mid: rgba(15, 23, 42, 0.6);        /* hero-stats row */
  --bg-code: rgba(0, 0, 0, 0.3);                /* exercise specs, receipt details */
  --bg-code-mid: rgba(0, 0, 0, 0.25);           /* receipt details */
  --bg-voice-hdr: rgba(0, 0, 0, 0.35);          /* voice board header */
  --bg-overlay-dark: rgba(4, 7, 14, 0.8);       /* mobile backdrop */
  --bg-drawer: #090e1a;                         /* mobile drawer */
  --bg-row-subtle: rgba(255, 255, 255, 0.03);   /* contact item, calc label */
  --bg-row-hover: rgba(0, 229, 255, 0.06);      /* calc label hover */
  --bg-input-hover: rgba(0, 229, 255, 0.08);    /* quiz opt hover */
  --border-subtle: rgba(255, 255, 255, 0.08);   /* card dividers */
  --border-dashed: rgba(255, 255, 255, 0.15);   /* receipt dashed */
  --border-dim: rgba(255, 255, 255, 0.1);       /* progress bars, hero-stats */
  --border-drawer: rgba(0, 229, 255, 0.35);     /* mobile drawer border */
  --meter-bg: rgba(255, 255, 255, 0.1);         /* progress/meter tracks */
  --quiz-explanation-bg: rgba(0, 0, 0, 0.35);   /* quiz explanation box */
  --mobile-btn-bg: rgba(255, 255, 255, 0.08);   /* mobile buttons */
  --mobile-btn-border: rgba(255, 255, 255, 0.15);
  --mobile-text: #ffffff;
  --launcher-title-color: #fff;
  --launcher-sub-color: #94a3b8;
  --launcher-feat-color: #cbd5e1;
  --banner-overlay-bg-start: rgba(7, 10, 18, 0.95);
  --banner-overlay-bg-mid: rgba(7, 10, 18, 0.7);
  --custom-checkbox-border: rgba(255, 255, 255, 0.3);
  --todo-box-border: rgba(255, 255, 255, 0.3);
  --mobile-link-active-color: #00e5ff;
  --mobile-user-balance-color: #00e5ff;
  --bg-header: rgba(7, 10, 18, 0.85);
  --border-header: rgba(255, 255, 255, 0.08);
  --header-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);

  --primary: #00e5ff;
  --primary-hover: #33ebff;
  --primary-glow: rgba(0, 229, 255, 0.35);

  --accent-green: #00e676;
  --accent-green-glow: rgba(0, 230, 118, 0.35);
  --accent-amber: #ffb300;
  --accent-amber-glow: rgba(255, 179, 0, 0.35);
  --accent-danger: #ff3d57;
  --accent-danger-glow: rgba(255, 61, 87, 0.4);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #cbd5e1;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Light Mode Theme Design System
   ========================================================================== */
html.light,
html:not(.dark) {
  --bg-dark: #f1f5f9;
  --bg-darker: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --border-glass: rgba(15, 23, 42, 0.12);
  --border-glass-hover: rgba(2, 132, 199, 0.45);

  /* Component-level semantic tokens (light overrides) */
  --bg-glass-hard: rgba(255, 255, 255, 0.9);
  --bg-glass-deep: rgba(248, 250, 252, 0.98);
  --bg-glass-mid: rgba(241, 245, 249, 0.85);
  --bg-code: rgba(15, 23, 42, 0.05);
  --bg-code-mid: rgba(15, 23, 42, 0.04);
  --bg-voice-hdr: rgba(15, 23, 42, 0.05);
  --bg-overlay-dark: rgba(15, 23, 42, 0.5);
  --bg-drawer: #f8fafc;
  --bg-row-subtle: rgba(15, 23, 42, 0.03);
  --bg-row-hover: rgba(2, 132, 199, 0.06);
  --bg-input-hover: rgba(2, 132, 199, 0.06);
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-dashed: rgba(15, 23, 42, 0.15);
  --border-dim: rgba(15, 23, 42, 0.1);
  --border-drawer: rgba(2, 132, 199, 0.35);
  --meter-bg: rgba(15, 23, 42, 0.1);
  --quiz-explanation-bg: rgba(15, 23, 42, 0.05);
  --mobile-btn-bg: rgba(15, 23, 42, 0.06);
  --mobile-btn-border: rgba(15, 23, 42, 0.12);
  --mobile-text: #0f172a;
  --launcher-title-color: #0f172a;
  --launcher-sub-color: #475569;
  --launcher-feat-color: #334155;
  --banner-overlay-bg-start: rgba(241, 245, 249, 0.97);
  --banner-overlay-bg-mid: rgba(241, 245, 249, 0.75);
  --custom-checkbox-border: rgba(15, 23, 42, 0.25);
  --todo-box-border: rgba(15, 23, 42, 0.25);
  --mobile-link-active-color: #0284c7;
  --mobile-user-balance-color: #0284c7;
  --bg-header: rgba(255, 255, 255, 0.96);
  --border-header: rgba(15, 23, 42, 0.08);
  --header-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);

  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-glow: rgba(2, 132, 199, 0.25);

  --accent-green: #059669;
  --accent-green-glow: rgba(5, 150, 105, 0.25);
  --accent-amber: #d97706;
  --accent-amber-glow: rgba(217, 119, 6, 0.25);
  --accent-danger: #dc2626;
  --accent-danger-glow: rgba(220, 38, 38, 0.25);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-sub: #334155;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 85% 15%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
              radial-gradient(circle at 15% 85%, rgba(0, 230, 118, 0.06) 0%, transparent 45%);
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.3rem;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border-radius: var(--radius-pill);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00b0ff 0%, #00e676 100%);
  color: #050d1a;
  box-shadow: 0 4px 20px var(--accent-green-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 230, 118, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.15);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-xs {
  padding: 6px 14px;
  font-size: 0.75rem;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-header);
  box-shadow: var(--header-shadow);
  transition: var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  font-size: 1.8rem;
  filter: drop-shadow(0 0 10px var(--primary-glow));
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--text-main);
}

.logo-text .highlight {
  color: var(--primary);
}

.logo-text .domain {
  font-size: 0.8rem;
  color: var(--accent-green);
}

.desktop-nav .nav-list,
.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition-fast);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ==========================================================================
   Header Theme Toggle Button (Desktop & Mobile)
   ========================================================================== */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  min-width: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #f8fafc;
  font-size: 1.15rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  user-select: none;
  outline: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  line-height: 1;
}

.theme-toggle-btn:hover {
  border-color: var(--primary);
  background: rgba(0, 229, 255, 0.16);
  box-shadow: 0 0 16px var(--primary-glow);
  transform: translateY(-2px) scale(1.06);
}

.theme-toggle-btn:active {
  transform: translateY(0) scale(0.95);
}

.theme-toggle-btn .theme-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle-btn:hover .theme-icon {
  transform: rotate(25deg) scale(1.1);
}

/* Light Mode Overrides for Specific Components */
html.light body::before,
html:not(.dark) body::before {
  background: radial-gradient(circle at 85% 15%, rgba(2, 132, 199, 0.08) 0%, transparent 45%),
              radial-gradient(circle at 15% 85%, rgba(5, 150, 105, 0.06) 0%, transparent 45%);
}

/* Light Mode Overrides for Site Header & Navigation */
html.light .site-header,
html.light #header,
html:not(.dark) .site-header,
html:not(.dark) #header {
  background: rgba(255, 255, 255, 0.96) !important;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08) !important;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06) !important;
}

html.light .logo-text,
html:not(.dark) .logo-text {
  color: #0f172a !important;
}

html.light .logo-text .highlight,
html:not(.dark) .logo-text .highlight {
  color: #0284c7 !important;
}

html.light .logo-text .domain,
html:not(.dark) .logo-text .domain {
  color: #059669 !important;
}

html.light .nav-link,
html:not(.dark) .nav-link {
  color: #1e293b !important;
  font-weight: 700 !important;
}

html.light .nav-link:hover,
html.light .nav-link.active,
html:not(.dark) .nav-link:hover,
html:not(.dark) .nav-link.active {
  color: #0284c7 !important;
  background: rgba(2, 132, 199, 0.1) !important;
}

html.light .nav-link.nav-link-game,
html:not(.dark) .nav-link.nav-link-game {
  color: #0284c7 !important;
  font-weight: 800 !important;
  background: rgba(2, 132, 199, 0.08) !important;
}

html.light .nav-link.nav-link-game:hover,
html:not(.dark) .nav-link.nav-link-game:hover {
  color: #0369a1 !important;
  background: rgba(2, 132, 199, 0.16) !important;
}

html.light .lang-switch-pill,
html:not(.dark) .lang-switch-pill {
  background: rgba(15, 23, 42, 0.05) !important;
  border-color: rgba(15, 23, 42, 0.12) !important;
}

html.light .lang-opt,
html:not(.dark) .lang-opt {
  color: #475569 !important;
  font-weight: 700 !important;
}

html.light .lang-opt:hover,
html:not(.dark) .lang-opt:hover {
  color: #0f172a !important;
}

html.light .lang-opt.active,
html:not(.dark) .lang-opt.active {
  color: #0284c7 !important;
  font-weight: 800 !important;
  text-shadow: none !important;
}

html.light .lang-divider,
html:not(.dark) .lang-divider {
  color: rgba(15, 23, 42, 0.25) !important;
}

html.light .theme-toggle-btn,
html:not(.dark) .theme-toggle-btn {
  background: rgba(15, 23, 42, 0.06) !important;
  border-color: rgba(15, 23, 42, 0.15) !important;
  color: #0f172a !important;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08) !important;
}

html.light .theme-toggle-btn:hover,
html:not(.dark) .theme-toggle-btn:hover {
  background: rgba(2, 132, 199, 0.12) !important;
  border-color: var(--primary) !important;
}

html.light .btn-header-auth,
html:not(.dark) .btn-header-auth {
  background: rgba(15, 23, 42, 0.04) !important;
  border-color: rgba(15, 23, 42, 0.15) !important;
  color: #0f172a !important;
  font-weight: 700 !important;
}

html.light .btn-header-auth:hover,
html:not(.dark) .btn-header-auth:hover {
  background: rgba(2, 132, 199, 0.08) !important;
  border-color: #0284c7 !important;
  color: #0284c7 !important;
}

html.light .btn-header-user,
html:not(.dark) .btn-header-user {
  background: rgba(2, 132, 199, 0.1) !important;
  border-color: rgba(2, 132, 199, 0.25) !important;
  color: #0369a1 !important;
  font-weight: 800 !important;
}

html.light .btn-header-user span,
html:not(.dark) .btn-header-user span {
  color: #0369a1 !important;
}

html.light .mobile-menu-toggle,
html:not(.dark) .mobile-menu-toggle {
  background: rgba(15, 23, 42, 0.05) !important;
  border-color: rgba(15, 23, 42, 0.12) !important;
}

html.light .mobile-menu-toggle span,
html:not(.dark) .mobile-menu-toggle span {
  background: #0f172a !important;
}

html.light .card,
html.light .exercise-card,
html.light .stat-card,
html.light .feature-card,
html.light .voice-card,
html.light .scenario-card,
html.light .step-card,
html.light .calc-box,
html.light .telemetry-card,
html:not(.dark) .card,
html:not(.dark) .exercise-card,
html:not(.dark) .stat-card,
html:not(.dark) .feature-card,
html:not(.dark) .voice-card,
html:not(.dark) .scenario-card,
html:not(.dark) .step-card,
html:not(.dark) .calc-box,
html:not(.dark) .telemetry-card {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.08);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

html.light .footer,
html:not(.dark) .footer {
  background: #e2e8f0;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

html.light .footer-bottom,
html:not(.dark) .footer-bottom {
  border-top-color: rgba(15, 23, 42, 0.08);
}

html.light .mobile-drawer,
html:not(.dark) .mobile-drawer {
  background: #f8fafc !important;
  border-left-color: rgba(15, 23, 42, 0.12) !important;
}

html.light .mobile-drawer-title,
html.light .mobile-link-text,
html:not(.dark) .mobile-drawer-title,
html:not(.dark) .mobile-link-text {
  color: #0f172a !important;
}

html.light .mobile-nav-link,
html:not(.dark) .mobile-nav-link {
  background: rgba(15, 23, 42, 0.04) !important;
  border-color: rgba(15, 23, 42, 0.08) !important;
}

.lang-switch-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-heading);
  transition: var(--transition-fast);
}

.lang-switch-pill:hover {
  border-color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
}

.lang-opt {
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.lang-opt.active {
  color: var(--primary);
  text-shadow: 0 0 8px var(--primary-glow);
}

.lang-divider {
  color: rgba(255, 255, 255, 0.2);
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scale(0.2);
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Desktop Only Elements */
.desktop-only {
  display: inline-flex;
}

/* Mobile Drawer & Backdrop - Hidden by default on Desktop */
.mobile-drawer,
.mobile-drawer-top,
.mobile-drawer-bottom,
.mobile-nav-backdrop {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding: 80px 0 100px 0;
  position: relative;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.15) 0%, rgba(0, 230, 118, 0.05) 50%, transparent 80%);
  filter: blur(80px);
  pointer-events: none;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--accent-green);
  background: rgba(0, 230, 118, 0.1);
  border: 1px solid rgba(0, 230, 118, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulseAnim 2s infinite;
}

@keyframes pulseAnim {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 230, 118, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 230, 118, 0); }
}

.hero-title {
  font-size: 3.2rem;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--bg-glass-mid);
  border: 1px solid var(--border-dim);
  padding: 18px 26px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-dim);
}

.hero-media {
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 229, 255, 0.15);
}

.hero-main-img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.hero-image-wrapper:hover .hero-main-img {
  transform: scale(1.03);
}

.hero-floating-card {
  position: absolute;
  background: var(--bg-glass-hard);
  border: 1px solid var(--border-glass-hover);
  backdrop-filter: blur(16px);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  animation: floatCard 4s ease-in-out infinite alternate;
}

.hero-floating-card.top-card {
  top: 20px;
  left: -20px;
}

.hero-floating-card.bottom-card {
  bottom: 25px;
  right: -20px;
  animation-delay: 2s;
}

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

.card-icon {
  font-size: 1.6rem;
}

.hero-floating-card strong {
  font-size: 0.9rem;
  color: var(--text-main);
  display: block;
}

.hero-floating-card p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Workflow Steps Section
   ========================================================================== */

.workflow-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.workflow-step-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
}

.workflow-step-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 229, 255, 0.15);
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
  margin-bottom: 16px;
}

.step-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.workflow-step-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.workflow-step-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.step-footer-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  background: rgba(255, 179, 0, 0.1);
  border: 1px solid rgba(255, 179, 0, 0.25);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.step-footer-tag.success {
  color: var(--accent-green);
  background: rgba(0, 230, 118, 0.1);
  border-color: rgba(0, 230, 118, 0.3);
}

/* ==========================================================================
   12 Exercises Section & Filters
   ========================================================================== */

.exercise-filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--primary);
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--primary);
  color: #050d1a;
  border-color: var(--primary);
  box-shadow: 0 0 16px var(--primary-glow);
}

.exercises-banner-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  border: 1px solid var(--border-glass);
}

.exercises-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

.banner-overlay-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(to top, var(--banner-overlay-bg-start) 0%, var(--banner-overlay-bg-mid) 60%, transparent 100%);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.banner-badge {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.banner-overlay-info p {
  font-size: 0.95rem;
  color: var(--text-sub);
  max-width: 900px;
}

.exercises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.exercise-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
}

.exercise-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.15);
}

.exercise-card.featured-card {
  border-color: rgba(0, 229, 255, 0.35);
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.85) 0%, rgba(10, 30, 50, 0.75) 100%);
}

.exercise-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.exercise-num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--primary);
}

.category-pill {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.category-pill.basic {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.category-pill.maneuver {
  color: #a78bfa;
  background: rgba(167, 139, 250, 0.12);
  border: 1px solid rgba(167, 139, 250, 0.3);
}

.category-pill.parking {
  color: var(--accent-amber);
  background: rgba(255, 179, 0, 0.12);
  border: 1px solid rgba(255, 179, 0, 0.3);
}

.category-pill.complex {
  color: var(--accent-green);
  background: rgba(0, 230, 118, 0.12);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.exercise-info h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.exercise-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.exercise-specs {
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: 0.8rem;
}

.spec-label {
  color: var(--text-muted);
  font-weight: 700;
  white-space: nowrap;
}

.spec-val {
  color: var(--text-sub);
}

.spec-val.highlight {
  color: var(--accent-green);
}

.spec-val.highlight-danger {
  color: var(--accent-danger);
  font-weight: 800;
}

.penalty-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: #ff9800;
  background: rgba(255, 152, 0, 0.1);
  border: 1px solid rgba(255, 152, 0, 0.3);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-top: auto;
}

.penalty-tag.penalty-danger {
  color: var(--accent-danger);
  background: rgba(255, 61, 87, 0.12);
  border-color: rgba(255, 61, 87, 0.35);
}

.penalty-tag.penalty-critical {
  color: #ff1744;
  background: rgba(255, 23, 68, 0.2);
  border-color: #ff1744;
  font-weight: 900;
}

.penalty-tag.penalty-success {
  color: var(--accent-green);
  background: rgba(0, 230, 118, 0.12);
  border-color: rgba(0, 230, 118, 0.4);
}

/* ==========================================================================
   Interactive Calculator Section
   ========================================================================== */

.penalty-category-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 30px;
}

.calc-tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
}

.calc-tab-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

.calc-tab-btn.active {
  background: var(--primary);
  color: #050d1a;
  border-color: var(--primary);
}

.calculator-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 32px;
  align-items: start;
}

.calculator-options {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(10px);
}

.calc-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.calc-subheading {
  font-size: 1.15rem;
}

.calc-checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-checkbox-label {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-row-subtle);
  border: 1px solid var(--border-subtle);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
  position: relative;
}

.calc-checkbox-label:hover {
  background: rgba(0, 229, 255, 0.06);
  border-color: rgba(0, 229, 255, 0.3);
}

.calc-check {
  display: none;
}

.custom-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--custom-checkbox-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  flex-shrink: 0;
}

.calc-check:checked + .custom-checkbox {
  background: var(--accent-danger);
  border-color: var(--accent-danger);
}

.calc-check:checked + .custom-checkbox::after {
  content: '✓';
  color: #fff;
  font-size: 0.75rem;
  font-weight: 900;
}

.calc-check:checked ~ .check-text {
  color: var(--accent-danger);
  font-weight: 600;
}

.check-text {
  font-size: 0.9rem;
  color: var(--text-sub);
  flex-grow: 1;
}

.points-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.points-badge.p-5 {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.15);
}

.points-badge.p-20 {
  color: #ffb300;
  background: rgba(255, 179, 0, 0.15);
}

.points-badge.p-25 {
  color: #ff7043;
  background: rgba(255, 112, 67, 0.15);
}

.points-badge.p-100 {
  color: #ff1744;
  background: rgba(255, 23, 68, 0.25);
  font-weight: 900;
}

.calculator-result-card {
  background: var(--bg-glass-deep);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: sticky;
  top: 100px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2), 0 0 30px var(--primary-glow);
}

.receipt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 20px;
  border-bottom: 1px dashed var(--border-dashed);
  padding-bottom: 12px;
}

.receipt-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}

.live-clock {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.calculator-result-card h4 {
  font-size: 1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.score-display {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
}

.score-number {
  font-family: var(--font-heading);
  font-size: 3.8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--accent-green);
  transition: var(--transition-fast);
}

.score-number.fail {
  color: var(--accent-danger);
  animation: shakeNum 0.4s ease;
}

@keyframes shakeNum {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.score-max {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 700;
}

.score-meter-wrap {
  width: 100%;
  height: 8px;
  background: var(--meter-bg);
  border-radius: var(--radius-pill);
  overflow: hidden;
  margin-bottom: 18px;
}

.score-meter-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-amber) 70%, var(--accent-danger) 100%);
  transition: width 0.3s ease;
}

.score-status-badge {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
  transition: var(--transition-fast);
}

.score-status-badge.pass {
  background: rgba(0, 230, 118, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(0, 230, 118, 0.4);
}

.score-status-badge.fail {
  background: rgba(255, 61, 87, 0.2);
  color: var(--accent-danger);
  border: 1px solid rgba(255, 61, 87, 0.5);
}

.receipt-details {
  width: 100%;
  background: var(--bg-code-mid);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.receipt-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-sub);
}

.receipt-row strong {
  color: var(--text-main);
  font-family: var(--font-mono);
}

.score-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 22px;
}

/* ==========================================================================
   Voice Engine & Soundboard Section
   ========================================================================== */

.voice-board-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
}

.voice-board-header {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-voice-hdr);
  border: 1px solid var(--border-subtle);
  padding: 14px 22px;
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.voice-indicator {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 22px;
}

.wave-bar {
  width: 4px;
  height: 6px;
  background: var(--primary);
  border-radius: 2px;
  transition: height 0.2s ease;
}

.voice-indicator.playing .wave-bar {
  animation: wavePulse 0.8s infinite ease-in-out alternate;
}

.voice-indicator.playing .wave-bar:nth-child(2) { animation-delay: 0.15s; }
.voice-indicator.playing .wave-bar:nth-child(3) { animation-delay: 0.3s; }
.voice-indicator.playing .wave-bar:nth-child(4) { animation-delay: 0.45s; }
.voice-indicator.playing .wave-bar:nth-child(5) { animation-delay: 0.6s; }

@keyframes wavePulse {
  0% { height: 4px; }
  100% { height: 22px; }
}

.voice-status-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-sub);
}

.voice-buttons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.voice-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.voice-btn:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 229, 255, 0.15);
}

.voice-btn.warning-voice:hover {
  background: rgba(255, 179, 0, 0.1);
  border-color: var(--accent-amber);
  box-shadow: 0 8px 20px var(--accent-amber-glow);
}

.voice-btn.success-voice:hover {
  background: rgba(0, 230, 118, 0.1);
  border-color: var(--accent-green);
  box-shadow: 0 8px 20px var(--accent-green-glow);
}

.voice-btn.danger-voice:hover {
  background: rgba(255, 61, 87, 0.1);
  border-color: var(--accent-danger);
  box-shadow: 0 8px 20px var(--accent-danger-glow);
}

.v-icon {
  font-size: 1.6rem;
}

.v-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-main);
}

.v-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   Scenario Quiz Section
   ========================================================================== */

.quiz-container {
  max-width: 850px;
  margin: 0 auto;
}

.quiz-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--meter-bg);
  border-radius: var(--radius-pill);
  overflow: hidden;
  margin-bottom: 20px;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent-green) 100%);
  transition: width 0.3s ease;
}

.quiz-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
}

.quiz-question-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.q-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.q-points {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-green);
}

.quiz-question-title {
  font-size: 1.35rem;
  margin-bottom: 24px;
  line-height: 1.5;
}

.quiz-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.quiz-opt-btn {
  background: var(--bg-row-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: left;
  color: var(--text-sub);
  font-size: 0.95rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: var(--transition-fast);
}

.quiz-opt-btn:hover:not(:disabled) {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--primary);
  color: var(--text-main);
  transform: translateX(4px);
}

.quiz-opt-btn.correct {
  background: rgba(0, 230, 118, 0.2);
  border-color: var(--accent-green);
  color: var(--accent-green);
  font-weight: 700;
}

.quiz-opt-btn.wrong {
  background: rgba(255, 61, 87, 0.2);
  border-color: var(--accent-danger);
  color: var(--accent-danger);
  font-weight: 700;
}

.quiz-explanation {
  display: none;
  background: var(--quiz-explanation-bg);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.6;
}

.quiz-actions {
  display: flex;
  justify-content: flex-end;
}

/* ==========================================================================
   Candidate Checklist Section
   ========================================================================== */

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.checklist-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(10px);
}

.checklist-card h3 {
  font-size: 1.2rem;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
}

.check-items-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.custom-todo {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  cursor: pointer;
  user-select: none;
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.5;
}

.todo-check {
  display: none;
}

.todo-box {
  width: 22px;
  height: 22px;
  border: 2px solid var(--todo-box-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
}

.todo-check:checked + .todo-box {
  background: var(--accent-green);
  border-color: var(--accent-green);
}

.todo-check:checked + .todo-box::after {
  content: '✓';
  color: #050d1a;
  font-weight: 900;
  font-size: 0.8rem;
}

.todo-check:checked ~ span {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* ==========================================================================
   Hardware Section
   ========================================================================== */

.hardware-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hardware-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 28px;
}

.hardware-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.li-icon {
  width: 28px;
  height: 28px;
  background: rgba(0, 229, 255, 0.15);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  flex-shrink: 0;
}

.hardware-features-list strong {
  font-size: 1rem;
  color: var(--text-main);
  display: block;
  margin-bottom: 4px;
}

.hardware-features-list p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hardware-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.hardware-img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-container {
  max-width: 900px;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(0, 229, 255, 0.3);
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 20px 24px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
}

.faq-chevron {
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-chevron {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0 24px;
}

.faq-answer p {
  padding-bottom: 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-card-box {
  background: var(--bg-glass-deep);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.contact-header {
  max-width: 700px;
  margin: 0 auto 36px auto;
}

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.contact-item {
  background: var(--bg-row-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.c-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}

.contact-item strong {
  font-size: 0.9rem;
  color: var(--text-sub);
}

.contact-item p {
  font-size: 1.05rem;
  color: var(--primary);
  font-weight: 700;
}

.contact-item a {
  color: var(--primary);
  text-decoration: none;
}

.contact-item a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--bg-darker);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 70px 0 30px 0;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 14px;
  max-width: 380px;
}

.footer-links-col h4, .footer-seo-col h4 {
  font-size: 1.05rem;
  margin-bottom: 18px;
  color: var(--text-main);
}

.footer-links-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-links-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.seo-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.seo-tags-cloud span {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
}

.footer-bottom-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.made-with {
  color: var(--text-sub);
}

/* Custom Brand Button & Logo Styles */
.brand-logo-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid rgba(0, 175, 202, 0.7);
  box-shadow: 0 0 16px rgba(30, 64, 175, 0.45);
}

.btn-header-game {
  background: linear-gradient(135deg, #00AFCA 0%, #1EB53A 100%) !important;
  color: #fff !important;
  font-weight: 800;
  border-radius: 12px;
  padding: 8px 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 18px rgba(0, 175, 202, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-decoration: none;
}

.btn-hero-game {
  background: linear-gradient(135deg, #00AFCA 0%, #1EB53A 100%) !important;
  padding: 16px 28px !important;
  font-size: 1rem !important;
  font-weight: 800 !important;
  border-radius: 14px !important;
  text-decoration: none !important;
  box-shadow: 0 10px 30px rgba(0, 175, 202, 0.4) !important;
  color: #fff !important;
}

.btn-hero-game:hover, .btn-header-game:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(0, 175, 202, 0.55) !important;
}

/* ==========================================================================
   Hero Game Launcher Card & Big Play Button
   ========================================================================== */

.hero-game-launcher-card {
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--bg-glass-hard);
  border: 2px solid rgba(0, 175, 202, 0.4);
  border-radius: 28px;
  padding: 28px 24px;
  text-decoration: none;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.3), 0 0 35px rgba(0, 175, 202, 0.2);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.hero-game-launcher-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: #00AFCA;
  box-shadow: 0 30px 60px -10px rgba(0, 0, 0, 0.8), 0 0 50px rgba(0, 175, 202, 0.45);
}

.launcher-glow-effect {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 175, 202, 0.12) 0%, transparent 60%);
  pointer-events: none;
  animation: pulseGlow 4s ease-in-out infinite alternate;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); opacity: 0.7; }
  100% { transform: scale(1.05); opacity: 1; }
}

.launcher-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}

.launcher-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 175, 202, 0.15);
  border: 1px solid rgba(0, 175, 202, 0.4);
  color: #38bdf8;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 6px 12px;
  border-radius: 9999px;
}

.launcher-badge .live-pulse {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 1.5s infinite;
}

.launcher-free-tag {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #000;
  font-size: 0.75rem;
  font-weight: 900;
  padding: 5px 12px;
  border-radius: 8px;
  letter-spacing: 0.5px;
}

.launcher-centerpiece {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0 20px 0;
  z-index: 2;
}

.launcher-wheel-img {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(0, 175, 202, 0.7);
  box-shadow: 0 12px 35px rgba(10, 19, 37, 0.6), 0 0 30px rgba(30, 64, 175, 0.45);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.hero-game-launcher-card:hover .launcher-wheel-img {
  transform: scale(1.06);
  box-shadow: 0 16px 45px rgba(10, 19, 37, 0.8), 0 0 40px rgba(0, 175, 202, 0.6);
}

.big-play-btn-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #00AFCA 0%, #1EB53A 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.8), inset 0 0 10px rgba(255, 255, 255, 0.4);
  border: 3px solid #fff;
  transition: all 0.3s ease;
  animation: pulsePlay 2s infinite;
}

@keyframes pulsePlay {
  0% { box-shadow: 0 0 0 0 rgba(0, 175, 202, 0.7); }
  70% { box-shadow: 0 0 0 16px rgba(0, 175, 202, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 175, 202, 0); }
}

.hero-game-launcher-card:hover .big-play-btn-circle {
  transform: translate(-50%, -50%) scale(1.15);
  background: linear-gradient(135deg, #38bdf8 0%, #34d399 100%);
}

.play-svg-icon {
  width: 32px;
  height: 32px;
  color: #fff;
  margin-left: 4px;
}

.launcher-title-area {
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}

.launcher-main-title {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--launcher-title-color);
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--launcher-title-color) 0%, var(--text-sub) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.launcher-sub-text {
  font-size: 0.85rem;
  color: var(--launcher-sub-color);
}

.launcher-features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
  position: relative;
  z-index: 2;
}

.l-feat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-row-subtle);
  border: 1px solid var(--border-subtle);
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--launcher-feat-color);
}

.l-feat-icon {
  font-size: 1rem;
}

.launcher-action-btn {
  background: linear-gradient(135deg, #00AFCA 0%, #1EB53A 100%);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 14px;
  border-radius: 14px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 10px 25px rgba(0, 175, 202, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
}

.hero-game-launcher-card:hover .launcher-action-btn {
  background: linear-gradient(135deg, #38bdf8 0%, #34d399 100%);
  box-shadow: 0 12px 30px rgba(0, 175, 202, 0.55);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

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

  .calculator-result-card {
    position: static;
  }

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

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

  .footer-container {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 860px) {
  /* Hide desktop-only controls from top sticky bar */
  .desktop-only {
    display: none !important;
  }

  /* Compact header bar */
  .site-header {
    height: 64px;
  }

  .header-container {
    height: 64px;
    padding: 0 14px;
  }

  .brand-logo {
    gap: 8px;
    z-index: 1000;
  }

  .brand-logo-img {
    width: 34px;
    height: 34px;
    min-width: 34px;
  }

  .logo-text {
    font-size: 1.05rem;
    letter-spacing: 0.5px;
  }

  .header-actions {
    gap: 8px;
    align-items: center;
  }

  .btn-header-game {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 800;
    border-radius: 10px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 5px;
  }

  .btn-header-user {
    padding: 6px 10px;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: 10px;
    white-space: nowrap;
  }

  /* Hamburger Toggle Button */
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    min-width: 38px;
    padding: 0;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .mobile-menu-toggle:hover {
    background: rgba(0, 175, 202, 0.15);
    border-color: var(--primary);
  }

  /* Mobile Navigation Backdrop (Direct child of body) */
  .mobile-nav-backdrop {
    display: block !important;
    position: fixed !important;
    inset: 0 !important;
    background: var(--bg-overlay-dark) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
    z-index: 999990 !important;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .mobile-nav-backdrop.active {
    opacity: 1 !important;
    pointer-events: auto !important;
  }

  /* Slide-in Mobile Drawer (Direct child of body) */
  .mobile-drawer {
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    width: min(88vw, 360px) !important;
    height: 100vh !important;
    height: 100dvh !important;
    background: var(--bg-drawer) !important;
    border-left: 1px solid var(--border-drawer) !important;
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.6) !important;
    padding: 22px 18px 26px !important;
    transform: translateX(110%) !important;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1) !important;
    z-index: 999999 !important;
    overflow-y: auto !important;
    overscroll-behavior: contain !important;
    -webkit-overflow-scrolling: touch !important;
  }

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

  /* Hide Desktop Nav in Header on Mobile */
  .desktop-nav {
    display: none !important;
  }

  /* Drawer Top: Language + Theme Switcher + Close Button */
  .mobile-drawer-top {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 8px !important;
    padding-bottom: 16px !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    margin-bottom: 16px !important;
  }

  .mobile-lang-switch {
    display: flex !important;
    align-items: center !important;
    gap: 5px !important;
    padding: 6px 12px !important;
    background: var(--mobile-btn-bg) !important;
    border: 1px solid var(--mobile-btn-border) !important;
    border-radius: var(--radius-pill) !important;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
    color: var(--mobile-text) !important;
  }

  .mobile-lang-switch .lang-opt {
    color: #94a3b8 !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    transition: var(--transition-fast) !important;
  }

  .mobile-lang-switch .lang-opt.active {
    color: var(--mobile-link-active-color) !important;
    text-shadow: 0 0 10px var(--primary-glow) !important;
  }

  .mobile-theme-toggle,
  .drawer-close-btn {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    border-radius: 12px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: var(--mobile-btn-bg) !important;
    border: 1px solid var(--mobile-btn-border) !important;
    cursor: pointer !important;
    color: var(--mobile-text) !important;
    font-size: 18px !important;
    font-weight: bold !important;
    transition: all 0.2s ease !important;
  }

  .mobile-theme-toggle:hover,
  .drawer-close-btn:hover {
    background: var(--bg-row-hover) !important;
    border-color: var(--primary) !important;
  }

  /* Drawer Nav Links List */
  .mobile-drawer-nav {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    flex: 1 !important;
  }

  .mobile-nav-link {
    display: flex !important;
    align-items: center !important;
    gap: 14px !important;
    font-size: 1.02rem !important;
    font-weight: 700 !important;
    padding: 13px 16px !important;
    border-radius: 14px !important;
    color: var(--mobile-text) !important;
    background: var(--mobile-btn-bg) !important;
    border: 1px solid var(--border-subtle) !important;
    text-decoration: none !important;
    transition: all 0.2s ease !important;
    width: 100% !important;
  }

  .mobile-nav-link:hover,
  .mobile-nav-link.active {
    background: var(--bg-row-hover) !important;
    border-color: var(--primary) !important;
    color: var(--primary) !important;
    transform: translateX(4px) !important;
  }

  .mobile-nav-link-game {
    background: rgba(0, 229, 255, 0.1) !important;
    border-color: rgba(0, 229, 255, 0.35) !important;
    color: #00e5ff !important;
  }

  .mobile-link-icon {
    font-size: 1.25rem !important;
    line-height: 1 !important;
  }

  .mobile-link-text {
    flex: 1 !important;
    color: var(--mobile-text) !important;
    font-weight: 700 !important;
  }

  .mobile-link-badge {
    font-size: 0.65rem !important;
    font-weight: 800 !important;
    padding: 2px 7px !important;
    border-radius: 6px !important;
    background: #ff3d57 !important;
    color: #ffffff !important;
    letter-spacing: 0.5px !important;
  }

  /* Drawer Bottom Actions */
  .mobile-drawer-bottom {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    padding-top: 16px !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
    margin-top: 16px !important;
  }

  .mobile-user-card {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 12px 14px !important;
    background: rgba(255, 255, 255, 0.06) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    border-radius: 14px !important;
  }

  .mobile-user-avatar {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    border-radius: 50% !important;
    background: linear-gradient(135deg, #00AFCA, #1EB53A) !important;
    color: #ffffff !important;
    font-weight: 800 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.1rem !important;
  }

  .mobile-user-meta {
    overflow: hidden !important;
  }

  .mobile-user-name {
    font-size: 0.95rem !important;
    font-weight: 700 !important;
    color: var(--mobile-text) !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  .mobile-user-balance {
    font-size: 0.85rem !important;
    font-weight: 700 !important;
    color: var(--mobile-user-balance-color) !important;
  }

  .mobile-drawer-btn {
    width: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 13px 16px !important;
    border-radius: 12px !important;
    font-weight: 800 !important;
    font-size: 0.92rem !important;
    text-decoration: none !important;
    text-align: center !important;
  }

  .mobile-google-btn {
    gap: 10px !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(255, 255, 255, 0.18) !important;
    color: #ffffff !important;
  }

  .mobile-play-cta {
    background: linear-gradient(135deg, #00AFCA 0%, #1EB53A 100%) !important;
    color: #ffffff !important;
    font-weight: 900 !important;
    box-shadow: 0 4px 20px rgba(0, 175, 202, 0.45) !important;
  }

  .hero-section {
    padding: 40px 0 60px 0;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.25;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    width: 100%;
    padding: 14px;
  }

  .stat-item .stat-num {
    font-size: 1.3rem;
  }

  .stat-item .stat-label {
    font-size: 0.75rem;
  }

  .stat-divider {
    display: none;
  }

  .hero-floating-card.top-card {
    left: 10px;
    top: 10px;
  }

  .hero-floating-card.bottom-card {
    right: 10px;
    bottom: 10px;
  }

  .workflow-steps-grid {
    grid-template-columns: 1fr;
  }

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

  .voice-buttons-grid {
    grid-template-columns: 1fr;
  }

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

  .contact-info-grid {
    grid-template-columns: 1fr;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-bottom-flex {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 10px;
  }

  .brand-logo {
    gap: 6px;
  }

  .brand-logo-img {
    width: 32px;
    height: 32px;
    min-width: 32px;
  }

  .logo-text {
    font-size: 0.98rem;
    letter-spacing: 0.3px;
  }

  .logo-text .domain {
    display: none;
  }

  .header-actions {
    gap: 6px;
  }

  .btn-header-game {
    padding: 6px 10px;
    font-size: 0.78rem;
  }

  .btn-header-user {
    padding: 6px 8px;
    font-size: 0.75rem;
  }

  .mobile-menu-toggle {
    width: 36px;
    height: 36px;
    min-width: 36px;
  }

  .hero-title {
    font-size: 1.7rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .header-container {
    padding: 0 8px;
  }

  .btn-game-text {
    display: none;
  }

  .btn-header-game {
    padding: 6px 8px;
  }

  .logo-text {
    font-size: 0.92rem;
  }
}