:root {
  color-scheme: dark;
  --bg: #000;
  --bg-subtle: #0a0a0a;
  --bg-card: #111;
  --fg: #f5f5f7;
  --fg-muted: #86868b;
  --fg-subtle: #515154;
  --border: #1d1d1f;
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.3);
  --radius: 1rem;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Aurora ── */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(99,102,241,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(168,85,247,0.10) 0%, transparent 60%);
  pointer-events: none;
}

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 3.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

/* ── Hero ── */
.hero {
  padding: 6.5rem 0 4rem;
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5.25rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 1.25rem;
  padding: 0 0.04em 0.12em;
  background: linear-gradient(160deg, #fff 0%, #86868b 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero > p {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.btn-group {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.4rem;
  border-radius: 2rem;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--fg);
  color: #000;
}

.btn-primary:hover { background: #e0e0e0; }

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid rgba(255,255,255,0.15);
}

.btn-secondary:hover { background: rgba(255,255,255,0.06); }

/* ── Hero screenshot ── */
.showcase { perspective: 1400px; }

.screenshot-main {
  border-radius: 1.25rem;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04),
    0 40px 80px -20px rgba(0,0,0,0.8),
    0 0 120px -30px var(--primary-glow);
  overflow: hidden;
  background: var(--bg-subtle);
  transform: rotateX(2deg);
}

.screenshot-main img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Section shared ── */
.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--fg);
}

.section-header p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ── Features Grid ── */
.features {
  padding: 8rem 0;
  border-top: 1px solid var(--border);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card {
  background: var(--bg-card);
  padding: 2rem;
  transition: background 0.2s;
}

.card:hover { background: #161616; }

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.card p {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ── Spotlight Sections ── */
.spotlight-section {
  padding: 7rem 0;
  border-top: 1px solid var(--border);
}

.spotlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.spotlight-reverse .spotlight {
  direction: rtl;
}

.spotlight-reverse .spotlight > * {
  direction: ltr;
}

.spotlight-text { max-width: 440px; }

.spotlight-text h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  color: var(--fg);
}

.spotlight-text p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.75;
}

.spotlight-image {
  border-radius: 1.25rem;
  border: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
  box-shadow:
    0 30px 70px -15px rgba(0,0,0,0.7),
    0 0 0 1px rgba(255,255,255,0.03);
  background: var(--bg-subtle);
}

.spotlight-image img {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Deployment ── */
.deployment {
  padding: 8rem 0;
  border-top: 1px solid var(--border);
}

.deploy-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.code-block {
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
  font-size: 0.875rem;
  text-align: left;
  margin-top: 2.5rem;
}

.code-line { line-height: 2; }
.command { color: #e2e8f0; }
.comment { color: #4a4a52; }

.deploy-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--fg-subtle);
}

.deploy-note code {
  font-family: 'Menlo', monospace;
  font-size: 0.82rem;
  color: var(--fg-muted);
  background: rgba(255,255,255,0.06);
  padding: 0.15em 0.4em;
  border-radius: 0.25rem;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo { opacity: 0.4; }
.footer-logo:hover { opacity: 0.7; }

footer p {
  font-size: 0.8rem;
  color: var(--fg-subtle);
}

/* ── Mobile ── */
@media (max-width: 860px) {
  .spotlight {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .spotlight-reverse .spotlight {
    direction: ltr;
  }

  .spotlight-text { max-width: 100%; }

  .hero { padding: 5rem 0 3.5rem; }

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

  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .hero h1 {
    font-size: 2.75rem;
    line-height: 1.12;
    padding-bottom: 0.1em;
  }
  .btn-group { flex-direction: column; align-items: center; }
}
