/* Base */
:root {
  --bg: 12 14 22;
  --text: 243 244 246;
  --muted: 203 213 225;
  --glass: 255 255 255 / 0.06;
  --glass-border: 255 255 255 / 0.16;
  --accent-start: 37 99 235;
  --accent-end: 6 182 212;
  --ring: 14 165 233;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: rgb(var(--text));
  background: radial-gradient(1200px 800px at 10% -10%, rgba(59,130,246,0.15), transparent 50%),
              radial-gradient(1200px 800px at 90% 10%, rgba(34,211,238,0.18), transparent 50%),
              rgb(var(--bg));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container { width: 100%; max-width: 1100px; padding: 0 1.25rem; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 1.25rem; }
.section-title { font-size: clamp(1.5rem, 2.4vw, 2rem); margin: 0 0 0.25rem; }
.subtext { color: rgb(var(--muted)); font-size: 1rem; line-height: 1.6; }
.small { color: rgb(var(--muted)); font-size: 0.85rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: 8px; left: 8px; background: rgb(14 165 233 / 0.95); color: white; padding: .5rem .75rem; text-decoration: none; z-index: 50; transform: translateY(-200%); transition: transform .2s ease; }
.skip-link:focus { transform: translateY(0); outline: 2px solid rgba(255,255,255,.9); outline-offset: 2px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; backdrop-filter: blur(8px) saturate(1.2); background: rgba(17,19,28,0.35); border-bottom: 1px solid rgba(255,255,255,0.06); }
.header-bar { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: .5rem; padding: .5rem .9rem; color: rgb(var(--text)); text-decoration: none; font-weight: 700; letter-spacing: .2px; background: linear-gradient(135deg, rgba(var(--accent-start),0.2), rgba(var(--accent-end),0.2)); border: 1px solid rgba(255,255,255,0.12); transition: box-shadow .2s ease, transform .2s ease; }
.brand:hover, .brand:focus-visible { box-shadow: 0 8px 24px rgba(6,182,212,.18), 0 4px 12px rgba(37,99,235,.18); transform: translateY(-1px); }
.nav { display: flex; gap: 1rem; }
.nav a { color: rgb(var(--text)); text-decoration: none; opacity: .9; }
.nav a:hover, .nav a:focus-visible { opacity: 1; }
.link-cta { color: rgb(var(--text)); font-weight: 600; }

/* Hero */
.hero { padding: 4rem 0 2rem; }
.hero-card { padding: clamp(1.25rem, 2vw, 2rem); text-align: center; max-width: 840px; margin: 0 auto; }
.title { font-size: clamp(2rem, 6vw, 3.25rem); line-height: 1.1; margin: 0 0 .5rem; }
.subtitle { font-size: clamp(1.1rem, 2.2vw, 1.35rem); margin: 0 0 .25rem; }
.cta-row { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem; }

/* Features */
.features { padding: 2rem 0; }
.features-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.card { padding: 1.1rem; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.card:hover, .card:focus-within { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.35), 0 6px 12px rgba(6,182,212,.14); }
.card .icon { font-size: 1.4rem; }
.card h3 { margin: .35rem 0; font-size: 1.1rem; }
@media (min-width: 768px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .features-grid { grid-template-columns: repeat(4, 1fr); } }

/* How */
.how { padding: 2rem 0; }
.steps { list-style: none; display: grid; gap: 1rem; grid-template-columns: 1fr; padding: 0; margin: 0; }
.step { display: flex; align-items: center; gap: .75rem; padding: .9rem 1rem; transition: transform .2s ease, box-shadow .2s ease; }
.step:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(0,0,0,.3); }
.badge { display: inline-grid; place-items: center; width: 32px; height: 32px; background: linear-gradient(135deg, rgb(var(--accent-start)), rgb(var(--accent-end))); color: white; font-weight: 700; }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .steps { grid-template-columns: repeat(4, 1fr); } }

/* Waitlist */
.waitlist { padding: 2rem 0 3rem; }
.waitlist-form { display: grid; grid-template-columns: 1fr; gap: .75rem; padding: 1rem; }
.waitlist-form input { width: 100%; padding: .85rem 1rem; color: rgb(var(--text)); background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.16); outline: none; transition: box-shadow .15s ease, border-color .15s ease, background-color .15s ease; }
.waitlist-form input:focus-visible { border-color: rgba(var(--ring), .8); box-shadow: 0 0 0 4px rgba(var(--ring), .25); background-color: rgba(255,255,255,0.06); }
.waitlist-form input::placeholder { color: rgba(203,213,225,0.8); }
@media (min-width: 640px) { .waitlist-form { grid-template-columns: 1fr auto; align-items: center; } .waitlist-form .small { grid-column: 1 / -1; } }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 1rem 0; }
.footer-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-bar a { color: rgb(var(--text)); text-decoration: none; opacity: .9; }
.footer-bar a:hover, .footer-bar a:focus-visible { opacity: 1; }

/* Components */
.glass { background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.16); backdrop-filter: blur(12px) saturate(1.35); box-shadow: 0 14px 34px rgba(0,0,0,.35), inset 0 1px 1px rgba(255,255,255,.12); }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }
.gradient-text { background: linear-gradient(135deg, rgb(var(--accent-start)), rgb(var(--accent-end))); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; height: 44px; padding: 0 1.1rem; text-decoration: none; font-weight: 600; cursor: pointer; border: none; }
.btn-primary { color: white; background: linear-gradient(135deg, rgb(var(--accent-start)), rgb(var(--accent-end))); box-shadow: 0 10px 20px rgba(6,182,212,.18), 0 6px 12px rgba(37,99,235,.18); transition: transform .2s ease, box-shadow .2s ease; }
.btn-primary:hover, .btn-primary:focus-visible { transform: translateY(-1px); box-shadow: 0 12px 24px rgba(6,182,212,.22), 0 8px 16px rgba(37,99,235,.22); }
.btn-ghost { color: rgb(var(--text)); background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.16); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease; }
.btn-ghost:hover, .btn-ghost:focus-visible { transform: translateY(-1px); background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.26); box-shadow: 0 8px 18px rgba(0,0,0,.25); }

/* Focus */
:focus-visible { outline: 2px solid rgba(6,182,212,.8); outline-offset: 2px; border-radius: .25rem; }

/* Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}