:root {
  --bg: #050816;
  --text: #e8ecff;
  --muted: #9aa3c7;
  --aurora-1: #3df5b0;
  --aurora-2: #7b6cff;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

#sky { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; display: block; }
main, .nav, .footer { position: relative; z-index: 1; }

h1, h2, h3, .brand { font-family: "Space Grotesk", sans-serif; letter-spacing: -0.02em; }

.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px clamp(16px, 5vw, 56px);
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(5, 8, 22, 0.7), rgba(5, 8, 22, 0));
}
.brand { color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.25rem; }
.brand-mark { color: var(--aurora-1); }
.nav nav a { color: var(--muted); text-decoration: none; margin-left: 24px; font-size: 0.95rem; transition: color .2s; }
.nav nav a:hover { color: var(--text); }

.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 120px clamp(16px, 8vw, 120px) 80px;
  max-width: 1100px;
}
.eyebrow { color: var(--aurora-1); text-transform: uppercase; letter-spacing: 0.2em; font-size: 0.8rem; margin-bottom: 16px; }
h1 { font-size: clamp(2.6rem, 8vw, 6rem); line-height: 1.02; font-weight: 700; }
.glow {
  background: linear-gradient(90deg, var(--aurora-1), var(--aurora-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); max-width: 560px; margin-top: 24px; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.btn {
  display: inline-block; padding: 14px 26px; border-radius: 999px;
  text-decoration: none; font-weight: 500; transition: transform .2s, box-shadow .2s, background .2s;
}
.btn.primary { background: linear-gradient(90deg, var(--aurora-1), var(--aurora-2)); color: #050816; }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 10px 40px rgba(61, 245, 176, 0.35); }
.btn.ghost { border: 1px solid var(--border); color: var(--text); }
.btn.ghost:hover { background: rgba(255, 255, 255, 0.06); }
.btn.big { font-size: 1.2rem; padding: 18px 34px; margin-top: 32px; }

.scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: var(--muted); font-size: 0.75rem; letter-spacing: 0.3em; text-transform: uppercase;
  animation: bob 2s ease-in-out infinite;
}
@keyframes bob { 50% { transform: translate(-50%, 6px); opacity: 0.5; } }

.section { padding: 120px clamp(16px, 8vw, 120px); max-width: 1200px; margin: 0 auto; }
.section h2 { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 40px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 28px; backdrop-filter: blur(12px);
  transition: transform .3s, border-color .3s;
  opacity: 0; transform: translateY(30px);
}
.card.visible { opacity: 1; transform: translateY(0); transition: opacity .7s, transform .7s, border-color .3s; }
.card:hover { border-color: rgba(61, 245, 176, 0.5); }
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--muted); }
.card-icon { font-size: 1.8rem; color: var(--aurora-1); margin-bottom: 16px; }
.link { display: inline-block; margin-top: 16px; color: var(--aurora-1); text-decoration: none; }
.tag { display: inline-block; margin-top: 16px; font-size: 0.8rem; color: var(--aurora-2); border: 1px solid var(--aurora-2); border-radius: 999px; padding: 2px 12px; }

.contact { text-align: center; padding-bottom: 160px; }
.contact .lead { margin-left: auto; margin-right: auto; }

.footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding: 28px clamp(16px, 5vw, 56px); border-top: 1px solid var(--border);
  color: var(--muted); font-size: 0.9rem; background: rgba(5, 8, 22, 0.8);
}
.footer a { color: var(--muted); }

/* Privacy page */
.doc { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; padding: 120px 16px 80px; }
.doc h1 { font-size: clamp(2rem, 6vw, 3rem); margin-bottom: 8px; }
.doc h2 { font-size: 1.3rem; margin: 32px 0 8px; }
.doc p, .doc li { color: var(--muted); }
.doc ul { padding-left: 20px; }
.doc a { color: var(--aurora-1); }

@media (max-width: 560px) {
  .nav nav a { margin-left: 14px; font-size: 0.85rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-hint { animation: none; }
  .card { opacity: 1; transform: none; }
}

/* ---------- 3D site mode ---------- */
body.site:not(.fallback) { overflow: hidden; height: 100vh; }
body.site:not(.fallback) #sky { touch-action: none; }
body.site:not(.fallback) .a11y {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
body.site.fallback #sky { display: none; }
body.site.fallback {
  background: radial-gradient(ellipse at top, #12204a, #050816 70%) fixed;
}
body.site.fallback .card { opacity: 1; transform: none; }

#loader {
  position: fixed; inset: 0; z-index: 10;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  background: var(--bg);
  transition: opacity .8s ease, visibility .8s;
}
body:not(.boot) #loader { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-mark { color: var(--aurora-1); font-size: 2rem; animation: spin 3s linear infinite; }
.loader-name { font-family: "Space Grotesk", sans-serif; font-weight: 700; letter-spacing: .4em; color: var(--text); }
.loader-bar { width: 140px; height: 2px; background: rgba(255,255,255,.08); overflow: hidden; border-radius: 2px; }
.loader-bar span { display: block; width: 40%; height: 100%; background: linear-gradient(90deg, var(--aurora-1), var(--aurora-2)); animation: load 1.2s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes load { from { transform: translateX(-100%); } to { transform: translateX(250%); } }