/* ═══════════════════════════════════════════════════
   SeatSniper Landing Page
   ═══════════════════════════════════════════════════ */

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

/* ── Variables ── */
:root {
  --red: #8b1a1a;
  --red-dark: #6f1414;
  --red-deeper: #530f0f;

  --gray-950: #0f172a;
  --gray-900: #1e293b;
  --gray-700: #475569;
  --gray-500: #64748b;
  --gray-400: #94a3b8;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50: #f8fafc;

  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --card-bg: #ffffff;

  --green: #16a34a;
  --yellow: #f59e0b;
  --blue: #2563eb;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.05);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;

  --transition-fast: 150ms ease;
  --transition-med: 250ms ease;
  --transition-slow: 400ms ease;

  --nav-height: 64px;
}

/* ── Dark mode ── */
[data-theme="dark"] {
  --bg: #0f172a;
  --bg-alt: #1e293b;
  --text: #f1f5f9;
  --text-muted: #a7b4c6;
  --red: #d36a6a;
  --red-dark: #b94a4a;
  --red-deeper: #9c3a3a;
  --border: #334155;
  --card-bg: #1e293b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.5);
}

/* ── Base ── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 1px 2px rgba(139, 26, 26,0.3);
}
.btn-primary:hover {
  background: var(--red-dark);
  box-shadow: 0 4px 12px rgba(139, 26, 26,0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--gray-400);
  background: var(--bg-alt);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

/* ═══════════════════════════════════════════
   Navbar
   ═══════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-med);
}

[data-theme="dark"] .navbar {
  background: rgba(15,23,42,0.82);
}

.navbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.navbar-logo { color: var(--red); }
.navbar-wordmark {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.nav-link:hover { color: var(--text); }

.dark-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.dark-toggle:hover {
  color: var(--text);
  border-color: var(--gray-400);
}
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

@media (max-width: 768px) {
  .navbar-links { display: none; }
}

/* ═══════════════════════════════════════════
   Hero
   ═══════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--nav-height) 0 40px;
  background: var(--bg);
  overflow: hidden;
}

.hero-inner {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(139, 26, 26,0.06);
  color: var(--red);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.typewriter {
  display: inline;
}
.typewriter-cursor {
  display: inline;
  color: var(--red);
  font-weight: 300;
  animation: blink 1s step-end infinite;
}
.typewriter-cursor.typing {
  animation: none;
  opacity: 1;
}
@keyframes blink {
  50% { opacity: 0; }
}

.hero-headline {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ── Phone Mockup ── */
.phone-mockup {
  width: 280px;
  height: 570px;
  background: #000;
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.1) inset;
  position: relative;
  margin: 0 auto;
  animation: phone-float 4s ease-in-out infinite;
}

@keyframes phone-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.phone-notch {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 26px;
  background: #000;
  border-radius: 20px;
  z-index: 10;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  border-radius: 30px;
  overflow: hidden;
  position: relative;
  padding: 56px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.phone-status-bar {
  position: absolute;
  top: 14px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.phone-status-icons {
  display: flex;
  gap: 4px;
  align-items: center;
  color: #fff;
}

.phone-notification {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,0.08);
}

.phone-notif-second {
  opacity: 0.6;
}

.phone-notif-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}
.phone-notif-app {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  flex: 1;
}
.phone-notif-time {
  font-size: 11px;
  color: rgba(255,255,255,0.45);
}
.phone-notif-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}
.phone-notif-body {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .phone-mockup { width: 240px; height: 490px; }
}

/* ═══════════════════════════════════════════
   Sections shared
   ═══════════════════════════════════════════ */
.section {
  padding: 96px 0;
}

.section-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   Universities
   ═══════════════════════════════════════════ */
.universities {
  background: var(--bg-alt);
}

.uni-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}

.uni-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 28px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-med);
}

.uni-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.uni-active {
  border-color: rgba(139, 26, 26,0.25);
  background: var(--card-bg);
}

.uni-soon {
  opacity: 0.55;
}

.uni-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.uni-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.uni-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.uni-badge-active {
  background: rgba(22,163,74,0.1);
  color: var(--green);
}
.uni-badge-soon {
  background: rgba(100,116,139,0.1);
  color: var(--gray-500);
}

/* ═══════════════════════════════════════════
   How it Works
   ═══════════════════════════════════════════ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  padding: 36px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-med);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.step-icon-blue { background: var(--blue); }
.step-icon-yellow { background: var(--yellow); }
.step-icon-green { background: var(--green); }

.step-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

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

/* ═══════════════════════════════════════════
   Why SeatSniper
   ═══════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 36px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-med);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(139, 26, 26,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

[data-theme="dark"] .feature-icon {
  background: rgba(139, 26, 26,0.15);
}

.feature-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

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

/* ═══════════════════════════════════════════
   CTA
   ═══════════════════════════════════════════ */
.cta-section {
  padding-bottom: 120px;
}

.cta-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 14px;
}

.cta-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .cta-card { padding: 40px 24px; }
}

/* ═══════════════════════════════════════════
   Footer
   ═══════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  background: var(--bg);
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--text); }

.footer-note {
  width: 100%;
  text-align: center;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 8px;
}

/* ═══════════════════════════════════════════
   Stats Badge
   ═══════════════════════════════════════════ */
.stats-badge {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  font-size: 12px;
  color: var(--text-muted);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 6px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity var(--transition-med), transform var(--transition-med);
}

.stats-badge:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.stats-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
}

.stats-dot-blue {
  background: var(--blue);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.stats-num {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--text);
}

@media (max-width: 640px) {
  .stats-badge { display: none; }
}

/* ═══════════════════════════════════════════
   Selection
   ═══════════════════════════════════════════ */
::selection {
  background: rgba(139, 26, 26,0.15);
  color: var(--text);
}