/* ==========================================================================
   MockTestVault — Modern Global Homepage Stylesheet
   Full-Viewport Width, Glassmorphism, Micro-Interactions, WCAG AA Compliant
   ========================================================================== */

/* --------------------------------------------------------------------------
   Root Variables & Color System
   -------------------------------------------------------------------------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', Helvetica, Arial, sans-serif;
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-card: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;
  --primary-glow: rgba(37, 99, 235, 0.18);

  --accent-purple: #7c3aed;
  --accent-purple-light: #f5f3ff;
  --accent-emerald: #10b981;
  --accent-emerald-light: #ecfdf5;
  --accent-amber: #f59e0b;
  --accent-amber-light: #fffbeb;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.06), 0 2px 6px -1px rgb(0 0 0 / 0.03);
  --shadow-lg: 0 12px 24px -4px rgb(0 0 0 / 0.08), 0 4px 8px -2px rgb(0 0 0 / 0.03);
  --shadow-xl: 0 20px 35px -5px rgb(0 0 0 / 0.1), 0 10px 15px -5px rgb(0 0 0 / 0.04);
}

[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-surface: #101625;
  --bg-subtle: #172033;
  --bg-card: #131b2e;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #243049;
  --border-hover: #3b4d70;

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: rgba(59, 130, 246, 0.12);
  --primary-border: #1e3a8a;
  --primary-glow: rgba(59, 130, 246, 0.25);

  --accent-purple-light: rgba(124, 58, 237, 0.15);
  --accent-emerald-light: rgba(16, 185, 129, 0.15);
  --accent-amber-light: rgba(245, 158, 11, 0.15);

  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.4);
  --shadow-md: 0 4px 12px -2px rgb(0 0 0 / 0.5);
  --shadow-lg: 0 12px 24px -4px rgb(0 0 0 / 0.6);
  --shadow-xl: 0 20px 35px -5px rgb(0 0 0 / 0.7);
}

/* --------------------------------------------------------------------------
   Global Layout & Utility
   -------------------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.home-container {
  width: 100%;
  max-width: 100%;
  padding: 0 32px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .home-container {
    padding: 0 16px;
  }
}

/* --------------------------------------------------------------------------
   Navigation Bar
   -------------------------------------------------------------------------- */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.15s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.hot-link {
  color: #2563eb;
  background: var(--primary-light);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary-border);
}

[data-theme="dark"] .nav-link.hot-link {
  color: #60a5fa;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.theme-btn:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
}

.cta-header-btn {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transition: all 0.2s ease;
}

.cta-header-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 64px 0 48px;
  background: radial-gradient(circle at 50% 0%, var(--primary-glow) 0%, transparent 60%);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

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

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 850;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 640px;
}

/* Hero Search & Filter Box */
.hero-search-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  margin-bottom: 24px;
  transition: all 0.2s ease;
}

.hero-search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow), var(--shadow-lg);
}

.search-icon {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  outline: none;
  padding: 8px 0;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-clear-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  display: none;
}

.search-clear-btn:hover {
  color: var(--text-primary);
}

/* Quick Filter Chips */
.filter-chips-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.filter-chip-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-right: 4px;
}

.filter-chip {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

/* Hero Action Buttons */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary-hero {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  padding: 13px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  transition: all 0.2s ease;
}

.btn-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary-hero {
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 13px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-secondary-hero:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Interactive Teaser Mini-Widget (Brilliant / UWorld Style)
   -------------------------------------------------------------------------- */
.teaser-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
  position: relative;
  transition: all 0.3s ease;
}

.teaser-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.teaser-badge {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.teaser-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.teaser-question-stem {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.teaser-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.teaser-option-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.92rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.15s ease;
  font-family: inherit;
}

.teaser-option-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--primary-light);
}

.teaser-key-badge {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.teaser-option-btn.correct {
  background: var(--accent-emerald-light);
  border-color: #10b981;
  color: #065f46;
}

[data-theme="dark"] .teaser-option-btn.correct {
  color: #34d399;
}

.teaser-option-btn.correct .teaser-key-badge {
  background: #10b981;
  color: #ffffff;
  border-color: #10b981;
}

.teaser-option-btn.wrong {
  background: rgba(239, 68, 68, 0.12);
  border-color: #ef4444;
  color: #991b1b;
}

[data-theme="dark"] .teaser-option-btn.wrong {
  color: #f87171;
}

.teaser-option-btn.wrong .teaser-key-badge {
  background: #ef4444;
  color: #ffffff;
  border-color: #ef4444;
}

.teaser-explanation {
  background: var(--bg-subtle);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 16px;
  margin-bottom: 16px;
  display: none;
}

.teaser-explanation.show {
  display: block;
  animation: fadeIn 0.25s ease;
}

.teaser-expl-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.teaser-expl-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 8px;
}

.teaser-citation {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 600;
}

.teaser-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
}

.teaser-next-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.teaser-next-btn:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.teaser-launch-full {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.teaser-launch-full:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Stats Ticker Bar
   -------------------------------------------------------------------------- */
.stats-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 24px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

.stat-item {
  padding: 8px;
}

.stat-value {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Section Styling
   -------------------------------------------------------------------------- */
.section-block {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-head {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 44px;
}

.section-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 850;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Exam Catalog & Card Grid
   -------------------------------------------------------------------------- */
.catalog-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.catalog-tab-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.catalog-tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.catalog-tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.exam-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

@media (max-width: 640px) {
  .exam-cards-grid {
    grid-template-columns: 1fr;
  }
}

.exam-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.exam-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}

.exam-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.exam-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
}

.exam-status-tag {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-live {
  background: var(--accent-emerald-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

[data-theme="dark"] .status-live {
  color: #34d399;
  border-color: #064e3b;
}

.status-hot {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

[data-theme="dark"] .status-hot {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: #7f1d1d;
}

.status-roadmap {
  background: var(--accent-purple-light);
  color: #6b21a8;
  border: 1px solid #ddd6fe;
}

[data-theme="dark"] .status-roadmap {
  color: #c084fc;
  border-color: #581c87;
}

.exam-category-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.exam-title {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 10px;
}

.exam-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 18px;
}

.exam-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.meta-pill {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.exam-card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.exam-launch-btn {
  flex: 1;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.exam-launch-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.exam-secondary-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.exam-secondary-btn:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* --------------------------------------------------------------------------
   Feature Grid — "The Vault Difference"
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.feature-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Comparison Table Section
   -------------------------------------------------------------------------- */
.comparison-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 650px;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: var(--bg-subtle);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.comparison-table th.highlight-col {
  background: var(--primary-light);
  color: var(--primary);
  border-left: 2px solid var(--primary);
  border-right: 2px solid var(--primary);
}

.comparison-table td.highlight-col {
  background: rgba(37, 99, 235, 0.03);
  border-left: 2px solid var(--primary);
  border-right: 2px solid var(--primary);
  font-weight: 600;
  color: var(--text-primary);
}

[data-theme="dark"] .comparison-table td.highlight-col {
  background: rgba(59, 130, 246, 0.08);
}

.check-mark {
  color: #10b981;
  font-weight: 800;
  font-size: 1.1rem;
}

.cross-mark {
  color: #ef4444;
  font-weight: 800;
  font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   FAQ Accordions
   -------------------------------------------------------------------------- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

@media (max-width: 800px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: all 0.2s ease;
}

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

.faq-question {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-answer {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Global Footer
   -------------------------------------------------------------------------- */
.global-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 32px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 18px;
}

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   3-Pillar Regional Hub Switcher & Responsive UI Hardening
   ========================================================================== */
.region-portals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

@media (max-width: 840px) {
  .region-portals-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

.region-portal-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.region-portal-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.region-portal-flag {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
}

.region-portal-info {
  flex: 1;
  min-width: 0;
}

.region-portal-title {
  font-weight: 750;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
}

.region-portal-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.region-portal-status {
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-badge-live {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.status-badge-complete {
  background: var(--accent-emerald-light);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Responsive Mobile Navigation Optimization */
@media (max-width: 768px) {
  .cta-header-btn {
    display: none;
  }
}

@media (max-width: 640px) {
  .brand-badge {
    display: none;
  }
  .nav-wrapper {
    height: 60px;
  }
  .filter-chips-row {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .filter-chips-row::-webkit-scrollbar {
    display: none;
  }
  .filter-chip {
    white-space: nowrap;
    flex-shrink: 0;
  }
  .catalog-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .catalog-tabs::-webkit-scrollbar {
    display: none;
  }
  .catalog-tab-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }
}

/* Regional Sub-Hub Compatibility Styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.hero-block {
  position: relative;
  padding: 56px 0 40px;
  background: radial-gradient(circle at 50% 0%, var(--primary-glow) 0%, transparent 60%);
  border-bottom: 1px solid var(--border-color);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff !important;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary) !important;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  background: var(--bg-subtle);
  border-color: var(--border-hover);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}