/* Base */
:root {
  --bg: #0b1020;
  --card: #121835;
  --text: #e6e8ef;
  --muted: #aab0c0;
  --primary: #6ee7ff;
  --accent: #8b5cf6;
  --ring: #2c3a7a;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 70% -10%, rgba(110,231,255,.15), transparent),
              radial-gradient(800px 600px at 10% 0%, rgba(139,92,246,.15), transparent),
              var(--bg);
  color: var(--text);
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; backdrop-filter: blur(8px);
  background: rgba(11,16,32,0.6); border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.brand .logo { font-size: 20px; }
.brand .title { font-weight: 700; letter-spacing: .3px; }
.nav-toggle { display: none; background: transparent; color: var(--text); border: 1px solid rgba(255,255,255,.12); padding: 6px 10px; border-radius: 8px; }
.nav-list { display: flex; gap: 18px; list-style: none; margin: 0; padding: 0; }
.nav-list a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav-list a:hover { color: var(--text); background: rgba(255,255,255,.06); }

/* Hero */
.hero { position: relative; padding: 96px 20px 64px; }
.hero-inner { max-width: 1080px; margin: 0 auto; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 64px); margin: 0 0 12px; letter-spacing: .4px; }
.subtitle { color: var(--muted); font-size: clamp(16px, 2.6vw, 20px); margin: 0 auto 26px; max-width: 820px; line-height: 1.6; }
.cta { display: inline-flex; gap: 12px; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 18px; border-radius: 12px; text-decoration: none; border: 1px solid transparent; transition: .2s ease; }
.btn.primary { background: linear-gradient(135deg, var(--primary), #3b82f6); color: #06121a; font-weight: 700; box-shadow: 0 10px 30px rgba(110,231,255,.2); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 16px 40px rgba(110,231,255,.28); }
.btn.ghost { color: var(--text); border-color: rgba(255,255,255,.16); background: rgba(255,255,255,.02); }
.btn.ghost:hover { background: rgba(255,255,255,.06); }
.hero-note { margin-top: 14px; color: var(--muted); font-size: 13px; }
.hero-bg { position: absolute; inset: 0; background: radial-gradient(600px 120px at 50% 100%, rgba(110,231,255,.08), transparent); pointer-events: none; }

/* Sections */
.section { padding: 56px 20px; }
.section h2 { max-width: 1080px; margin: 0 auto 20px; font-size: 28px; letter-spacing: .3px; }

.features .grid { max-width: 1080px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02)); border: 1px solid rgba(255,255,255,.08); border-radius: 16px; padding: 20px; box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.card h3 { margin: 4px 0 10px; font-size: 20px; }
.card p { margin: 0 0 12px; color: var(--muted); }
.list { margin: 0; padding-left: 18px; color: var(--text); }

.roadmap .timeline { max-width: 900px; margin: 0 auto; list-style: none; padding: 0; }
.roadmap .timeline li { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px dashed rgba(255,255,255,.08); }
.roadmap .timeline .time { color: var(--muted); min-width: 120px; font-variant-numeric: tabular-nums; }
.roadmap .timeline .item { color: var(--text); }

.contact .contact-form { max-width: 640px; margin: 12px auto 0; display: grid; gap: 14px; }
.contact label { display: grid; gap: 8px; color: var(--muted); font-size: 14px; }
.contact input, .contact textarea { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid rgba(255,255,255,.12); background: rgba(3,7,18,.4); color: var(--text); outline: none; }
.contact input:focus, .contact textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(110,231,255,.12); }
.contact .form-tip { color: var(--muted); font-size: 12px; margin: 0; }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,.08); color: var(--muted); display: flex; gap: 12px; justify-content: space-between; align-items: center; padding: 20px; flex-wrap: wrap; }
.site-footer .links { display: inline-flex; gap: 12px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 900px) {
  .features .grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav-list { display: none; position: absolute; right: 16px; top: 56px; background: rgba(11,16,32,.95); border: 1px solid rgba(255,255,255,.08); border-radius: 12px; padding: 10px; flex-direction: column; }
  .nav-list.open { display: flex; }
}