/* demo09 · glassmorphism
 * Soft pastel gradient backdrop + frosted-glass cards.
 * Modern, dreamy, "spatial" energy.
 */

:root {
  --bg: #e6e9f7;
  --fg: #161227;
  --muted: #635c7a;
  --accent: #6366f1;
  --accent-2: #ec4899;
  --accent-3: #06b6d4;

  --glass-bg: rgba(255,255,255,0.45);
  --glass-border: rgba(255,255,255,0.7);
  --glass-shadow: 0 12px 40px -8px rgba(99,102,241,0.25);
}

* { 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);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* animated background orbs */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: float 20s ease-in-out infinite;
}
.o1 { width: 540px; height: 540px; background: #a78bfa; top: -8%; left: -8%; }
.o2 { width: 480px; height: 480px; background: #f472b6; bottom: -10%; right: -8%; animation-delay: -7s; }
.o3 { width: 420px; height: 420px; background: #67e8f9; top: 40%; left: 30%; animation-delay: -14s; }
@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  33%     { transform: translate(40px,-30px) scale(1.05); }
  66%     { transform: translate(-30px,30px) scale(0.95); }
}

/* glass primitive */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-radius: 22px;
  box-shadow: var(--glass-shadow);
}

/* nav */
.nav {
  max-width: 1180px;
  margin: 24px auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky; top: 16px; z-index: 50;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.logo-mark {
  display: inline-block;
  width: 22px; height: 22px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.4);
}
.nav nav { display: flex; gap: 22px; font-size: 14px; }
.nav nav a { color: var(--muted); transition: color 0.15s; }
.nav nav a:hover { color: var(--fg); }

main { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* hero */
.hero { padding: 72px 0 48px; text-align: center; }
.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(48px, 7.5vw, 88px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.0;
  margin-bottom: 28px;
}
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shift 8s ease infinite;
}
@keyframes shift {
  0%,100% { background-position: 0% 50%; }
  50%     { background-position: 100% 50%; }
}
.lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.55;
}
.cta {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-primary, .btn-glass {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  transition: all 0.15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px -6px rgba(99,102,241,0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -6px rgba(99,102,241,0.65); }
.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  color: var(--fg);
}
.btn-glass:hover { background: rgba(255,255,255,0.7); }

/* feature cards */
.feature-row {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding: 32px 0;
}
.card { padding: 28px; transition: transform 0.2s; }
.card:hover { transform: translateY(-4px); }
.card-icon {
  width: 44px; height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 16px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.4);
}
.card-icon::before { content: attr(data-letter); }
.card h3 { font-size: 17px; margin-bottom: 6px; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 14px; }

/* how */
.how { padding: 40px; margin: 48px 0; }
.how h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 32px;
}
.steps {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.step .num {
  display: inline-flex;
  width: 32px; height: 32px;
  align-items: center; justify-content: center;
  border-radius: 999px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--glass-border);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }
.step code {
  background: rgba(255,255,255,0.6);
  padding: 1px 6px; border-radius: 4px;
  font-family: ui-monospace, "Menlo", monospace; font-size: 0.9em;
}

/* download */
.download { padding: 48px 40px; text-align: center; margin: 48px 0; }
.download h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.download .sub { color: var(--muted); margin-bottom: 32px; font-size: 15px; }
.dl-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.dl {
  padding: 18px;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  transition: all 0.15s;
}
.dl strong {
  display: block;
  font-size: 16px;
  color: var(--fg);
  margin-bottom: 4px;
  font-weight: 600;
}
.dl:hover { transform: translateY(-2px); border-color: var(--accent); }
.dl.ghost strong { color: var(--accent); }

/* footer */
footer {
  max-width: 1180px;
  margin: 48px auto;
  padding: 32px;
  text-align: center;
}
footer p { font-size: 14px; }
footer .meta { color: var(--muted); font-size: 12px; margin-top: 6px; }

::selection { background: var(--accent); color: #fff; }

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