:root {
  --bg: #000000;
  --card: #151515;
  --card-light: #1c1c1e;
  --text: #ffffff;
  --muted: #8e8e93;
  --primary: #aeff00;
  --primary-dim: rgba(174, 255, 0, 0.12);
  --border: #2a2a2a;
  --radius: 24px;
  --nav-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.accent { color: var(--primary); }

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease), border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(18px);
  border-color: rgba(255, 255, 255, 0.06);
}

.nav-solid {
  background: rgba(0, 0, 0, 0.92);
  border-color: rgba(255, 255, 255, 0.06);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-brand img { border-radius: 8px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
  color: var(--muted);
}

.nav-links a:hover { color: var(--text); }

.nav-cta {
  color: var(--bg) !important;
  background: var(--primary);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--primary);
  color: #000;
  box-shadow: 0 12px 40px rgba(174, 255, 0, 0.18);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-large { padding: 16px 28px; font-size: 1rem; }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(174, 255, 0, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 0 0 20px;
  font-weight: 800;
}

.lead {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 34rem;
  margin: 0 0 32px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  animation: pulse-line 2s ease-in-out infinite;
}

@keyframes pulse-line {
  0%, 100% { opacity: 0.35; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Device mockups */
.device {
  position: relative;
  width: min(320px, 100%);
  margin: 0 auto;
  aspect-ratio: 9 / 19.5;
  border-radius: 42px;
  padding: 12px;
  background: linear-gradient(145deg, #2a2a2a, #0a0a0a);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.65),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  transform: perspective(1200px) rotateY(-8deg) rotateX(4deg);
  transition: transform 0.8s var(--ease);
}

.device.in-view { transform: perspective(1200px) rotateY(-2deg) rotateX(0deg); }

.device-small { width: min(280px, 100%); }

.device-notch {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 26px;
  background: #000;
  border-radius: 999px;
  z-index: 5;
}

.device-photo {
  padding: 10px;
  background: linear-gradient(145deg, #2a2a2a, #0a0a0a);
  overflow: hidden;
}

.device-screenshot {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
  border-radius: 30px;
  background: #000;
}

.mock-map {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(174, 255, 0, 0.08), transparent 35%),
    linear-gradient(180deg, #1a1f1a 0%, #0d120d 45%, #111 100%);
}

.mock-map-dim { filter: brightness(0.75); }

.mock-route {
  position: absolute;
  left: 18%;
  top: 28%;
  width: 58%;
  height: 42%;
  border: 4px solid var(--primary);
  border-radius: 40% 60% 45% 55%;
  border-left: none;
  border-bottom: none;
  filter: drop-shadow(0 0 8px rgba(174, 255, 0, 0.35));
}

.mock-route-long { height: 52%; top: 22%; }
.mock-route-history { width: 72%; left: 10%; top: 18%; height: 34%; }

.mock-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #4da3ff;
  border: 3px solid #fff;
  top: 48%;
  left: 52%;
  box-shadow: 0 0 0 6px rgba(77, 163, 255, 0.18);
}

.mock-pill {
  position: absolute;
  top: 56px;
  background: rgba(21, 21, 21, 0.92);
  border: 1px solid #333;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.62rem;
  font-weight: 700;
  z-index: 3;
}

.mock-pill span { color: var(--primary); }
.mock-pill-left { left: 14px; }
.mock-pill-center { left: 50%; transform: translateX(-50%); top: 56px; }

.mock-hud {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--card);
  border-top-left-radius: 28px;
  border-top-right-radius: 28px;
  padding: 18px 16px 24px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  align-items: end;
}

.mock-stat label {
  display: block;
  color: var(--muted);
  font-size: 0.55rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.mock-stat strong {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.mock-stat-hr strong { color: #ff5a7a; }

.mock-hud-compact {
  grid-template-columns: 1fr;
  padding-top: 12px;
}

.mock-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--muted);
}

.mock-live {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
  padding: 24px;
}

.live-activity {
  width: 100%;
  background: rgba(28, 28, 30, 0.95);
  border-radius: 22px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.live-top, .live-main {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.live-top { color: var(--muted); font-size: 0.68rem; margin-bottom: 8px; }
.live-main strong { font-size: 1.3rem; letter-spacing: -0.03em; }
.live-main span { color: var(--muted); font-size: 0.72rem; }
.live-bar { height: 4px; background: #2a2a2a; border-radius: 999px; margin-top: 12px; overflow: hidden; }
.live-bar-fill { width: 62%; height: 100%; background: var(--primary); border-radius: inherit; }

.mock-hr-wave {
  width: 80%;
  height: 48px;
  background: linear-gradient(90deg, transparent, rgba(255, 90, 122, 0.35), transparent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 24'%3E%3Cpath fill='%23fff' d='M0 12 Q10 0 20 12 T40 12 T60 12 T80 12 T100 12 T120 12'/%3E%3C/svg%3E");
  mask-size: 100% 100%;
}

.history-sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--card);
  border-top-left-radius: 24px;
  border-top-right-radius: 24px;
  padding: 16px;
}

.history-sheet strong { display: block; margin-bottom: 8px; }
.history-meta { display: flex; gap: 12px; color: var(--muted); font-size: 0.72rem; font-weight: 700; margin-bottom: 14px; }

.chart-bars {
  display: flex;
  align-items: end;
  gap: 6px;
  height: 56px;
}

.chart-bars span {
  flex: 1;
  height: var(--h);
  background: linear-gradient(to top, rgba(174, 255, 0, 0.25), var(--primary));
  border-radius: 4px 4px 0 0;
}

/* Stats bar */
.stats-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 28px 0;
  background: rgba(21, 21, 21, 0.45);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.stat span { color: var(--muted); font-size: 0.85rem; }

/* Feature sections */
.feature-section {
  padding: 120px 0;
}

.feature-section-alt { background: linear-gradient(180deg, rgba(21, 21, 21, 0.35), transparent); }

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-grid-reverse .feature-copy { order: 2; }
.feature-grid-reverse .feature-visual { order: 1; }

.feature-copy h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
}

.feature-copy p { color: var(--muted); font-size: 1.05rem; margin: 0 0 20px; }

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  color: #d1d1d6;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.sport-chips { display: flex; flex-wrap: wrap; gap: 10px; }

.chip {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--card-light);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.chip-active {
  color: #000;
  background: var(--primary);
  border-color: var(--primary);
}

.card-stack { display: grid; gap: 14px; max-width: 360px; margin: 0 auto; }

.badge-card {
  display: flex;
  gap: 14px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 18px;
  transform: translateX(24px);
  opacity: 0;
  transition: transform 0.8s var(--ease), opacity 0.8s var(--ease);
}

.badge-card.visible { transform: translateX(0); opacity: 1; }

.badge-icon { font-size: 1.6rem; }
.badge-card strong { display: block; margin-bottom: 2px; }
.badge-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

/* Privacy + Beta */
.privacy-section, .beta-section { padding: 100px 0; }

.privacy-grid {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.privacy-grid h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  max-width: 16ch;
}

.privacy-grid p { color: var(--muted); margin: 0; max-width: 42rem; }

.beta-card {
  text-align: center;
  background: radial-gradient(circle at top, rgba(174, 255, 0, 0.08), transparent 55%), var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  padding: 64px 32px;
}

.beta-card h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.beta-card p { color: var(--muted); max-width: 36rem; margin: 0 auto 28px; }
.beta-note { margin-top: 18px !important; font-size: 0.85rem; }

/* Footer */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 32px 0 48px;
}

.footer-inner {
  display: grid;
  gap: 18px;
  justify-items: center;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-links a:hover { color: var(--text); }
.footer-copy { color: #555; font-size: 0.82rem; margin: 0; }

/* Legal page */
.legal-page { padding-top: var(--nav-h); }

.legal-content {
  max-width: 720px;
  padding: 48px 0 80px;
}

.legal-content h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}

.legal-content .meta { color: var(--muted); margin-bottom: 32px; }
.legal-content h2 { font-size: 1.15rem; margin-top: 2rem; letter-spacing: -0.02em; }
.legal-content p, .legal-content li { color: #d1d1d6; }
.legal-content a { color: var(--primary); }
.legal-content ul { padding-left: 1.2rem; }

/* Scroll reveals */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal-delay { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .feature-grid,
  .feature-grid-reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-grid-reverse .feature-copy,
  .feature-grid-reverse .feature-visual { order: initial; }

  .device { transform: none !important; }

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

  .privacy-grid {
    flex-direction: column;
    align-items: start;
  }

  .nav-links a:not(.nav-cta) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .badge-card, .device, .btn { transition: none !important; animation: none !important; }
  .reveal, .badge-card { opacity: 1; transform: none; }
}