/* ==========================================================================
   TranslateMyLibro - Official Product Landing Page Stylesheet
   Apple-inspired Native Aesthetic, Zero-dependency, Ultra-high performance
   Optimized for Cloudflare Pages Global Edge Delivery
   ========================================================================== */

/* --- Design Tokens & Theme Variables --- */
:root {
  /* Light Theme */
  --bg-primary: #F5F5F7;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #EBF0F7;
  --bg-surface-glass: rgba(255, 255, 255, 0.82);

  --text-primary: #1D1D1F;
  --text-secondary: #515154;
  --text-muted: #86868B;
  --text-inverse: #FFFFFF;

  --border-subtle: #E5E5EA;
  --border-strong: #D1D1D6;

  /* Apple & Libre Indigo Palette */
  --apple-blue: #0071E3;
  --apple-blue-hover: #0077ED;
  --brand-primary: #0A84FF;
  --brand-indigo: #5E5CE6;
  --brand-purple: #AF52DE;
  --brand-gradient: linear-gradient(135deg, #0A84FF 0%, #5E5CE6 50%, #AF52DE 100%);
  --brand-gradient-book: linear-gradient(135deg, #FF9500 0%, #FF2D55 100%);

  --reader-orig-bg: #FFFFFF;
  --reader-trans-bg: #F8F9FA;
  --reader-highlight: rgba(10, 132, 255, 0.12);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 32px rgba(10, 132, 255, 0.25);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --nav-height: 68px;
  --max-width: 1200px;
  --font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
}

/* Dark Theme (Apple Dark Mode Pro) */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-surface: #1C1C1E;
  --bg-surface-elevated: #2C2C2E;
  --bg-surface-glass: rgba(28, 28, 30, 0.85);

  --text-primary: #F5F5F7;
  --text-secondary: #A1A1A6;
  --text-muted: #6E6E73;
  --text-inverse: #000000;

  --border-subtle: #2C2C2E;
  --border-strong: #3A3A3C;

  --reader-orig-bg: #1C1C1E;
  --reader-trans-bg: #242426;
  --reader-highlight: rgba(10, 132, 255, 0.25);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 40px rgba(10, 132, 255, 0.35);
}

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

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--apple-blue);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 20px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(10, 132, 255, 0.12);
  color: var(--brand-primary);
  margin-bottom: 16px;
  border: 1px solid rgba(10, 132, 255, 0.25);
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Button & App Store CTA */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
}
.btn:focus-visible {
  outline: 2px solid var(--apple-blue);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--apple-blue);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 113, 227, 0.35);
}
.btn-primary:hover {
  background: var(--apple-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 113, 227, 0.45);
}
.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--text-muted);
}
.btn-appstore {
  background: #000000;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  font-size: 1rem;
}
[data-theme="dark"] .btn-appstore {
  background: #1C1C1E;
  border-color: #3A3A3C;
}
.btn-appstore:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
  background: #111111;
}

/* --- Navigation Bar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-surface-glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all 0.3s ease;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand-logo img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-links a:hover {
  color: var(--brand-primary);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
/* Language Selector */
.lang-selector-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.lang-globe-icon {
  position: absolute;
  left: 10px;
  pointer-events: none;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.lang-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 7px 28px 7px 30px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
  transition: all 0.2s ease;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
  font-family: inherit;
}
.lang-select:hover {
  color: var(--text-primary);
  border-color: var(--brand-primary);
  background-color: var(--bg-surface-elevated);
}
.lang-select:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.15);
}
.lang-select option {
  background-color: var(--bg-surface);
  color: var(--text-primary);
}
.lang-selector-wrap:hover .lang-globe-icon {
  color: var(--brand-primary);
}
.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}
.theme-toggle-btn:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: var(--bg-surface-elevated);
}
[data-theme="dark"] .theme-icon-light { display: block; }
[data-theme="dark"] .theme-icon-dark { display: none; }
:root:not([data-theme="dark"]) .theme-icon-light { display: none; }
:root:not([data-theme="dark"]) .theme-icon-dark { display: block; }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--text-primary);
}

/* --- Hero Section --- */
.hero-section {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 80px;
  text-align: center;
  background: radial-gradient(circle at 50% 15%, rgba(10, 132, 255, 0.1) 0%, transparent 60%);
}
.hero-app-icon-wrap {
  margin: 0 auto 24px;
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(255, 255, 255, 0.2) inset;
  overflow: hidden;
  animation: floatIcon 4s ease-in-out infinite alternate;
}
@keyframes floatIcon {
  0% { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}
.hero-app-icon-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-apple-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.hero-apple-badge svg {
  width: 16px;
  height: 16px;
}
.hero-title {
  font-size: clamp(2.3rem, 5.2vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.16;
  margin-bottom: 22px;
}
.hero-description {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 32px;
  line-height: 1.6;
}
.price-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(10, 132, 255, 0.08);
  border: 1px solid rgba(10, 132, 255, 0.25);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 36px;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-pill-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.hero-pill-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* --- Interactive Dual Reader Showcase --- */
.showcase-section {
  padding-top: 20px;
}
.reader-mockup-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  max-width: 1080px;
  margin: 0 auto;
}
.window-titlebar {
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.window-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.tl-close { background: #FF5F56; }
.tl-min { background: #FFBD2E; }
.tl-max { background: #27C93F; }

.reader-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}
.reader-tab-btn {
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  border: none;
  background: transparent;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}
.reader-tab-btn:hover {
  color: var(--text-primary);
}
.reader-tab-btn.active {
  background: var(--brand-primary);
  color: #FFFFFF;
}

.reader-toolbar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 12px;
}
.reader-doc-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}
.doc-badge {
  background: var(--brand-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.reader-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}
.tool-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 5px 10px;
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.tool-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.tool-btn.active {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}

/* Dual Pane Content */
.reader-body-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 440px;
  background: var(--bg-surface);
}
.reader-pane {
  padding: 36px 32px;
  overflow-y: auto;
  font-size: 0.98rem;
  line-height: 1.8;
}
.reader-pane-orig {
  background: var(--reader-orig-bg);
  border-right: 1px solid var(--border-subtle);
}
.reader-pane-trans {
  background: var(--reader-trans-bg);
}
.pane-heading {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.book-chapter-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.book-paragraph {
  margin-bottom: 18px;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background-color 0.2s ease;
  position: relative;
}
.book-paragraph:hover, .book-paragraph.highlight {
  background-color: var(--reader-highlight);
}
.proper-noun-tag {
  border-bottom: 2px solid var(--brand-purple);
  font-weight: 600;
  cursor: help;
  position: relative;
}
.proper-noun-tag:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #1C1C1E;
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Comic/Manga Inpainting Before/After View */
.comic-view-container {
  display: none;
  padding: 32px;
  background: var(--bg-surface);
}
.comic-split-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.comic-card {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  background: var(--bg-surface-elevated);
}
.comic-bubble-sim {
  border: 2px dashed var(--border-strong);
  border-radius: 20px;
  padding: 24px 20px;
  background: #FFFFFF;
  color: #111;
  text-align: center;
  margin: 16px 0;
  font-size: 1rem;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.comic-bubble-sim.lama-cleaned {
  background: #FFF;
  border-style: solid;
  border-color: var(--brand-primary);
  box-shadow: 0 0 20px rgba(10, 132, 255, 0.15);
}
.comic-tech-badge {
  display: inline-block;
  background: rgba(175, 82, 222, 0.15);
  color: var(--brand-purple);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

/* --- Formats Grid Section --- */
.formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.format-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all 0.25s ease;
}
.format-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-lg);
}
.format-ext {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 8px;
}
.format-name {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
}
.format-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Features Deep Dive Section --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all 0.3s ease;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-primary);
}
.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(10, 132, 255, 0.1);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
}
.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Translation Engines Section --- */
.engines-table-wrap {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.engines-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}
.engines-table th, .engines-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}
.engines-table th {
  background: var(--bg-surface-elevated);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}
.engines-table tr:last-child td {
  border-bottom: none;
}
.engine-badge-free {
  display: inline-block;
  background: #DCFCE7;
  color: #15803D;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.engine-badge-byok {
  display: inline-block;
  background: #E0E7FF;
  color: #4338CA;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* Local Inference Engines Showcase */
.local-engines-box {
  max-width: 900px;
  margin: 32px auto 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
}
.local-engines-header {
  margin-bottom: 24px;
}
.local-engines-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}
.local-engines-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.local-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.local-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: all 0.2s ease;
}
.local-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-2px);
}
.local-card-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.local-card-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--brand-primary);
  background: rgba(10, 132, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 6px;
}
.local-card-desc {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.4;
}
.model-tags-row {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.825rem;
  color: var(--text-muted);
}
.model-tag {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* --- Pricing Section (App Store Focused) --- */
.pricing-section {
  background: var(--bg-surface-elevated);
}
.pricing-single-box {
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 2px solid var(--brand-primary);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  box-shadow: var(--shadow-glow);
  position: relative;
}
.pricing-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-gradient);
  color: #FFFFFF;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.app-price-large {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 16px 0 8px;
}
.app-price-meta {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-weight: 500;
}
.pricing-features-list {
  list-style: none;
  text-align: left;
  max-width: 480px;
  margin: 0 auto 36px;
}
.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-secondary);
}
.pricing-features-list li svg {
  width: 20px;
  height: 20px;
  color: #34C759; /* Apple Green */
  flex-shrink: 0;
}
.universal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-elevated);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* --- FAQ Section --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item[open] {
  border-color: var(--brand-primary);
}
.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.2s ease;
  color: var(--text-muted);
}
.faq-item[open] .faq-icon {
  transform: rotate(180deg);
  color: var(--brand-primary);
}
.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Footer --- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 36px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 320px;
}
.footer-col-title {
  font-size: 0.925rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer-links a:hover {
  color: var(--brand-primary);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 14px;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .local-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    display: none;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-actions .btn-primary {
    display: none;
  }
  .reader-body-split {
    grid-template-columns: 1fr;
  }
  .reader-pane-orig {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .comic-split-view {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .local-grid {
    grid-template-columns: 1fr;
  }
  .pricing-single-box {
    padding: 36px 20px;
  }
  .app-price-large {
    font-size: 2.8rem;
  }
}

@media (max-width: 480px) {
  .nav-actions {
    gap: 8px;
  }
  .lang-select {
    padding: 6px 20px 6px 24px;
    font-size: 0.75rem;
  }
  .lang-globe-icon {
    left: 7px;
    width: 13px;
    height: 13px;
  }
}