/* demo04 · modern SaaS
 * Dark mode. Gradient mesh background. Pill CTAs. Card-based features.
 * Linear / Vercel reference.
 */

:root {
  --bg: #07060d;
  --bg-2: #0d0c18;
  --fg: #ededf2;
  --muted: #8a8aa0;
  --line: rgba(255,255,255,0.08);
  --accent: #8b5cf6;
  --accent-2: #ec4899;
  --card: rgba(255,255,255,0.03);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* Mesh gradient background */
.bg-mesh {
  position: fixed;
  inset: -10% -10% auto auto;
  width: 80vw;
  height: 80vh;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 30%, rgba(139,92,246,0.35), transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(236,72,153,0.25), transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(56,189,248,0.18), transparent 45%);
  filter: blur(60px);
  opacity: 0.7;
  pointer-events: none;
}

/* Subtle grid noise */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: -1;
}

/* nav */
.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,6,13,0.7);
}
.brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; letter-spacing: -0.01em;
}
.brand svg { color: var(--accent); }
.nav nav { margin-left: auto; display: flex; gap: 24px; }
.nav nav a { color: var(--muted); transition: color 0.15s; }
.nav nav a:hover { color: var(--fg); }

.btn-pill {
  display: inline-block;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all 0.15s;
}
.btn-pill:hover { background: var(--accent); border-color: var(--accent); }

main { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

/* hero */
.hero {
  text-align: center;
  padding: 120px 0 80px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--line);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { transform: scale(1); opacity: 1; }
  50%     { transform: scale(1.4); opacity: 0.7; }
}
.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 28px;
}
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.55;
}
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.btn {
  display: inline-block;
  padding: 14px 26px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 15px;
  transition: all 0.15s;
}
.btn.primary {
  background: linear-gradient(180deg, var(--accent), #6d28d9);
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(139,92,246,0.6), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 12px 32px -8px rgba(139,92,246,0.8); }
.btn.secondary {
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--fg);
}
.btn.secondary:hover { border-color: var(--muted); }
.trust { font-size: 13px; color: var(--muted); }
.trust span:nth-child(odd) { color: var(--fg); font-weight: 500; }
.trust span { margin: 0 6px; }

/* features */
.features { padding: 80px 0; }
.features h2, .how h2, .pricing h2, .download h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 56px;
  max-width: 720px;
  line-height: 1.15;
}
.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
  transition: all 0.15s;
}
.card:hover { border-color: var(--accent); background: rgba(139,92,246,0.05); }
.icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 10px;
  margin-bottom: 16px;
  color: #fff;
  font-weight: 700;
}
.card h3 { font-size: 17px; margin-bottom: 6px; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 14px; }

/* how */
.how { padding: 80px 0; }
.steps {
  list-style: none;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  counter-reset: step;
}
.steps li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.step-num {
  display: inline-block;
  font-family: ui-monospace, monospace;
  font-size: 12px;
  color: var(--accent);
  background: rgba(139,92,246,0.15);
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 14px;
}
.steps h3 { font-size: 18px; margin-bottom: 6px; }
.steps p { color: var(--muted); font-size: 14px; }
.steps code { background: rgba(255,255,255,0.06); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }

/* pricing */
.pricing { padding: 80px 0; }
.tiers {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 720px;
  margin-bottom: 24px;
}
.tier {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
}
.tier.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(139,92,246,0.08), transparent);
}
.tier h3 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 12px; }
.tier .price { font-size: 30px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.tier .price span { font-size: 13px; color: var(--muted); font-weight: 400; }
.tier ul { list-style: none; }
.tier li { color: var(--muted); font-size: 14px; padding: 6px 0; border-top: 1px solid var(--line); }
.tier li:first-child { border: 0; }
.footnote { color: var(--muted); font-size: 13px; }

/* download */
.download { padding: 80px 0; text-align: center; }
.download .sub { color: var(--muted); margin: -40px 0 40px; font-size: 14px; }
.dl-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  max-width: 880px;
  margin: 0 auto;
}
.dl {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  text-align: left;
  transition: all 0.15s;
}
.dl:hover { border-color: var(--accent); transform: translateY(-2px); }
.dl strong { display: block; font-size: 16px; margin-bottom: 4px; }
.dl span { font-size: 12px; color: var(--muted); font-family: ui-monospace, monospace; }
.dl.ghost { border-style: dashed; }

/* footer */
footer {
  border-top: 1px solid var(--line);
  margin-top: 80px;
  padding: 56px 32px 32px;
  max-width: 1180px;
  margin-left: auto; margin-right: auto;
}
footer .brand { font-weight: 600; margin-bottom: 28px; }
footer .cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}
footer h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 12px; }
footer .cols a, footer .cols p { display: block; color: var(--muted); font-size: 14px; margin-bottom: 6px; transition: color 0.15s; }
footer .cols a:hover { color: var(--fg); }
footer .legal { color: var(--muted); font-size: 12px; padding-top: 24px; border-top: 1px solid var(--line); }

@media (max-width: 768px) {
  .nav nav { display: none; }
  .hero { padding: 64px 0; }
}