/* Base */
:root {
  --bg: #0f172a; /* slate-900 */
  --panel: #111827; /* gray-900 */
  --text: #e5e7eb; /* gray-200 */
  --muted: #9ca3af; /* gray-400 */
  --accent: #22c55e; /* green-500 */
  --accent-2: #60a5fa; /* blue-400 */
  --card: #0b1220;
  --border: #1f2937; /* gray-800 */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: linear-gradient(180deg, var(--bg), #0b1020 50%, #0a0f1c 100%);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

a { color: #93c5fd; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(140%) blur(8px);
  background: rgba(10, 15, 28, 0.6);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand.small { gap: 8px; }
.logo { width: 28px; height: 28px; display: grid; place-items: center; background: #0f172a; border: 1px solid var(--border); border-radius: 8px; }
.brand-name { font-weight: 700; letter-spacing: 0.2px; }

.store-ctas { display: flex; gap: 10px; }

/* Hero */
.hero { padding: 72px 0 48px; }
.hero-inner { text-align: center; }
.hero h1 {
  font-size: clamp(28px, 4.5vw, 40px);
  line-height: 1.2;
  margin: 0 0 12px;
}
.hero-subtitle { color: var(--muted); max-width: 760px; margin: 0 auto 24px; }
.hero-note { color: var(--muted); margin-top: 12px; }

.cta-group { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,0.03);
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); background: rgba(255,255,255,0.06); text-decoration: none; }
.btn-primary { background: linear-gradient(90deg, var(--accent), #16a34a); border-color: #065f46; color: #08130d; font-weight: 700; }
.btn-primary:hover { background: linear-gradient(90deg, #22c55e, #10b981); }
.btn-secondary { background: rgba(96,165,250,0.15); border-color: #1e3a8a; }
.btn-store { font-weight: 600; padding: 8px 12px; }
.btn-apple .btn-icon { font-size: 16px; }
.btn-google .btn-icon { font-size: 14px; }

/* Sections */
section { padding: 48px 0; }
section h2 { font-size: clamp(22px, 3.5vw, 28px); margin: 0 0 20px; }

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}

.grid-2 { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 800px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: radial-gradient(1200px 200px at 10% -10%, rgba(96,165,250,0.06), transparent 60%), var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}
.card-emoji { font-size: 22px; margin-bottom: 6px; }
.card h3 { margin: 4px 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

.steps { counter-reset: step; margin: 0; padding: 0 0 0 22px; }
.steps li { margin: 8px 0; }

.list { margin: 0; padding: 0 0 0 18px; }
.list li { margin: 6px 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: rgba(10,15,28,0.6); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; flex-wrap: wrap; }
.footer-links { display: inline-flex; gap: 14px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }
.copyright { color: var(--muted); margin: 6px 0 0; font-size: 14px; }

/* Video */
.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}
.video-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Accessibility */
:focus { outline: 2px solid var(--accent-2); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}