/* ============================================================
   CarSave Landing Page — style.css
   Design tokens mirror app/lib/app/app_colors.dart & app_spacing.dart
   ============================================================ */

:root {
  /* Brand colors — from AppColors */
  --color-primary: #4A90D9;
  --color-primary-light: #6AAFE6;
  --color-primary-bg: rgba(74, 144, 217, 0.08);
  --color-success: #66BB6A;
  --color-warning: #FFA726;
  --color-error: #EF5350;

  /* Surfaces */
  --color-bg: #F5F6FA;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F0F1F5;
  --color-border: #D9DAE6;

  /* Text */
  --color-text: #1A1B2E;
  --color-text-secondary: #6B6C80;
  --color-text-hint: #9E9FB2;

  /* Radius — from AppRadius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-card: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  /* Spacing — from AppSpacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-xxl: 24px;

  /* Font */
  --font: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont,
    'Segoe UI', sans-serif;

  /* Layout */
  --max-width: 1100px;
  --nav-height: 64px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Layout helpers ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 60px 0; }

/* ── Typography ── */
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 540px;
  line-height: 1.6;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background 0.25s, box-shadow 0.25s;
}
.nav.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  gap: 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--color-text);
  flex-shrink: 0;
}
.nav-logo img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
  margin-right: 24px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-primary); }
.btn-nav {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  padding: 8px 18px;
  border-radius: 100px;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.btn-nav:hover { opacity: 0.88; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  padding: 6px;
  background: none;
  border: none;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: rgba(255,255,255,0.98);
  border-top: 1px solid var(--color-border);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 16px;
  z-index: 99;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-surface-alt);
}
.nav-mobile .btn-mobile-cta {
  margin-top: 8px;
  text-align: center;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  padding: 12px;
  border-radius: var(--radius-card);
}

/* ── Buttons & Store Badges ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  text-decoration: none;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  padding: 13px 27px;
  border-radius: 100px;
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
  text-decoration: none;
}
.btn-secondary:hover { border-color: var(--color-primary); transform: translateY(-1px); }

.store-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-text);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.2s;
  text-decoration: none;
}
.store-badge:hover { opacity: 0.82; }
.store-badge svg { width: 20px; height: 20px; fill: #fff; }
.store-badge-sub { font-size: 10px; font-weight: 400; display: block; opacity: 0.75; }
.store-badge-main { font-size: 14px; font-weight: 700; display: block; }

/* ── Hero ── */
.hero {
  min-height: 100vh;
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #EBF3FC 0%, var(--color-bg) 60%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--color-text);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 440px;
}
.hero-trust {
  margin-top: 20px;
  font-size: 12px;
  color: var(--color-text-hint);
}
.hero-trust span { margin-right: 12px; }

/* Phone frame — CSS only */
.phone-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}
.phone-frame {
  position: relative;
  width: 260px;
  aspect-ratio: 9 / 19.5;
  border-radius: 38px;
  border: 3.5px solid #1A1B2E;
  background: var(--color-surface);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(26,27,46,0.18), 0 8px 24px rgba(74,144,217,0.10);
}
.phone-frame::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 26px;
  background: #1A1B2E;
  border-radius: 0 0 14px 14px;
  z-index: 2;
}
.phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.phone-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #EBF3FC 0%, #F5F6FA 100%);
  gap: 10px;
  padding: 40px 16px;
  text-align: center;
}
.phone-placeholder .ph-icon {
  font-size: 36px;
  opacity: 0.5;
}
.phone-placeholder .ph-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}
.phone-placeholder .ph-hint {
  font-size: 10px;
  color: var(--color-text-hint);
  line-height: 1.4;
}

/* ── Stats bar ── */
.stats-bar {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}
.stats-bar-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 0 24px;
}
.stat-item + .stat-item {
  border-left: 1px solid var(--color-border);
}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ── Free Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--color-surface);
  padding: 20px;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.feature-item:hover {
  box-shadow: 0 4px 20px rgba(74,144,217,0.10);
  transform: translateY(-2px);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.feature-icon.green { background: rgba(102,187,106,0.10); }
.feature-icon.orange { background: rgba(255,167,38,0.10); }
.feature-icon.purple { background: rgba(126,87,194,0.10); }
.feature-icon.teal { background: rgba(38,166,154,0.10); }
.feature-text h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.feature-text p {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.feature-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: 1px 7px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}

/* ── Screenshots ── */
.screenshots-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, #EBF3FC 100%);
}
.screenshots-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 40px 0 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.screenshots-scroll::-webkit-scrollbar { height: 4px; }
.screenshots-scroll::-webkit-scrollbar-track { background: transparent; }
.screenshots-scroll::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }
.screen-card {
  flex-shrink: 0;
  scroll-snap-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.screen-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
}
.screen-card .phone-frame { width: 200px; }

/* ── Premium ── */
.premium-section { background: var(--color-text); color: #fff; }
.premium-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.premium-section .section-title { color: #fff; }
.premium-section .section-subtitle { color: rgba(255,255,255,0.65); max-width: none; }
.premium-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 32px;
}
.premium-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
}
.check-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}
.premium-section .phone-frame {
  border-color: rgba(255,255,255,0.2);
}
.premium-section .phone-placeholder {
  background: linear-gradient(160deg, #1E2A3A 0%, #121220 100%);
}
.premium-section .phone-placeholder .ph-label { color: rgba(255,255,255,0.6); }
.premium-section .phone-placeholder .ph-hint { color: rgba(255,255,255,0.35); }

/* ── Pricing ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.pricing-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  transition: box-shadow 0.2s, transform 0.2s;
}
.pricing-card:hover { box-shadow: 0 8px 32px rgba(74,144,217,0.12); transform: translateY(-3px); }
.pricing-card.recommended {
  border-color: var(--color-primary);
  border-width: 2px;
}
.pricing-recommended-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-success);
  background: rgba(102,187,106,0.10);
  padding: 2px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
  align-self: flex-start;
}
.pricing-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.pricing-price {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 4px;
}
.pricing-price-unit {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}
.pricing-note {
  font-size: 12px;
  color: var(--color-text-hint);
  margin-top: 4px;
  margin-bottom: 20px;
}
.pricing-divider {
  height: 1px;
  background: var(--color-border);
  margin: 16px 0;
}
.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}
.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.pricing-feature .pf-icon { font-size: 13px; margin-top: 1px; flex-shrink: 0; }
.pricing-cta {
  margin-top: auto;
  display: block;
  text-align: center;
  padding: 12px;
  border-radius: var(--radius-card);
  font-size: 14px;
  font-weight: 700;
  transition: opacity 0.2s;
}
.pricing-cta.primary { background: var(--color-primary); color: #fff; }
.pricing-cta.outline { border: 1.5px solid var(--color-border); color: var(--color-text); }
.pricing-cta:hover { opacity: 0.85; }
.pricing-free-note {
  text-align: center;
  margin-top: 28px;
  font-size: 14px;
  color: var(--color-text-secondary);
}
.pricing-free-note a { color: var(--color-primary); font-weight: 600; }

/* ── FAQ ── */
.faq-list {
  max-width: 720px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
details[open] { box-shadow: 0 4px 16px rgba(74,144,217,0.08); }
summary {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  color: var(--color-text);
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform 0.3s;
}
details[open] summary::after { transform: rotate(45deg); }
.faq-body {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ── CTA Band ── */
.cta-band {
  background: linear-gradient(135deg, #3B7FC4 0%, #4A90D9 100%);
  padding: 80px 0;
  text-align: center;
  color: #fff;
}
.cta-band h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-band p {
  font-size: 16px;
  opacity: 0.8;
  margin-bottom: 36px;
}
.cta-band .store-badges {
  justify-content: center;
}
.cta-band .store-badge {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
}
.cta-band .store-badge:hover { background: rgba(255,255,255,0.25); }

/* ── Footer ── */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.55);
  padding: 48px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-brand img { width: 28px; height: 28px; border-radius: 6px; }
.footer-brand span { font-size: 16px; font-weight: 700; color: #fff; }
.footer-tagline { font-size: 13px; line-height: 1.6; max-width: 260px; }
.footer-col h4 { font-size: 12px; font-weight: 700; color: #fff; margin-bottom: 14px; letter-spacing: 0.05em; text-transform: uppercase; }
.footer-col a { display: block; font-size: 13px; margin-bottom: 8px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 12px; }
.footer-bottom-links a:hover { color: #fff; }

/* ── Legal pages (privacy.html, terms.html) ── */
.legal-page {
  padding-top: calc(var(--nav-height) + 48px);
  padding-bottom: 80px;
}
.legal-breadcrumb {
  margin-bottom: 32px;
}
.legal-breadcrumb a {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.legal-breadcrumb a:hover { text-decoration: underline; }
.legal-content {
  max-width: 720px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
}
.legal-content h1 {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 6px;
}
.legal-meta {
  font-size: 12px;
  color: var(--color-text-hint);
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.legal-intro {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}
.legal-section {
  margin-bottom: 28px;
}
.legal-section h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}
.legal-section p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  white-space: pre-line;
}
.legal-cross-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}
.legal-cross-links a {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
}
.legal-cross-links a:hover { text-decoration: underline; }

/* ── How It Works Journey ── */
.journey-section { background: var(--color-surface); }
.journey-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-top: 56px;
}
.journey-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}
.journey-connector {
  flex: 0 0 40px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12px;
  font-size: 24px;
  color: var(--color-text-hint);
  line-height: 1;
}
.journey-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(74,144,217,0.30);
}
.journey-icon { font-size: 32px; margin-bottom: 10px; }
.journey-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.journey-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 240px;
}

/* ── Feature Deep Dives ── */
.feature-deep { background: var(--color-bg); }
.feature-deep-alt { background: var(--color-surface); }
.feature-deep-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.feature-deep-inner.reversed .phone-wrap { order: -1; }
.feature-deep-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}
.feature-deep-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.feature-deep-alt .feature-deep-item { background: var(--color-bg); }
.feature-deep-item:hover {
  box-shadow: 0 4px 20px rgba(74,144,217,0.10);
  transform: translateY(-2px);
}
.feature-deep-item .feature-text h3 { font-size: 15px; }
.feature-deep-item .feature-text p { font-size: 13px; }

/* ── App Preview (tabbed) ── */
.app-preview-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, #EBF3FC 100%);
}
.app-preview-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 48px;
}
.phone-frame-lg { width: 280px; }
#preview-img { transition: opacity 0.2s ease; }
.app-preview-tabs {
  display: flex;
  justify-content: center;
  margin-top: 32px;
  border-bottom: 2px solid var(--color-border);
}
.preview-tab {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  background: none;
  color: var(--color-text-hint);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.preview-tab:hover { color: var(--color-text-secondary); }
.preview-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.app-preview-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-top: 14px;
}

/* ── Animations ── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-sm { padding: 40px 0; }
  .container { padding: 0 16px; }

  /* Nav */
  .nav-links, .btn-nav { display: none; }
  .nav-hamburger { display: flex; }

  /* Hero */
  .hero { min-height: auto; padding-top: calc(var(--nav-height) + 40px); padding-bottom: 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero .phone-wrap { order: -1; }
  .hero-desc { max-width: none; }
  .section-subtitle { max-width: none; }

  /* Stats */
  .stats-bar-inner { grid-template-columns: 1fr; gap: 20px; }
  .stat-item + .stat-item { border-left: none; border-top: 1px solid var(--color-border); padding-top: 20px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; }

  /* Screenshots */
  .screenshots-scroll { padding: 32px 0 16px; }
  .screen-card .phone-frame { width: 180px; }

  /* Journey */
  .journey-steps { flex-direction: column; align-items: center; gap: 40px; }
  .journey-connector { display: none; }
  .journey-step { max-width: 340px; }

  /* Feature Deep Dives */
  .feature-deep-inner { grid-template-columns: 1fr; gap: 40px; }
  .feature-deep-inner.reversed .phone-wrap { order: 0; }
  .feature-deep .phone-wrap, .feature-deep-alt .phone-wrap { justify-content: center; }

  /* App Preview */
  .app-preview-tabs { gap: 0; }
  .preview-tab { padding: 10px 14px; font-size: 13px; }

  /* Premium */
  .premium-inner { grid-template-columns: 1fr; gap: 40px; }
  .premium-section .phone-wrap { display: none; }

  /* Pricing */
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }

  /* Footer */
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  /* Legal */
  .legal-content { padding: 24px 20px; }
}