/* FaceShift, shared design tokens & components */

:root {
  --navy-900: #0b1735;
  --navy-800: #11214a;
  --navy-700: #1c3270;
  --navy-500: #3756a8;
  --teal-500: #0e9aa7;
  --teal-400: #2bb6c2;
  --bg: #f4f6fb;
  --bg-soft: #ecf0f9;
  --bg-card: #ffffff;
  --ink: #0b1735;
  --ink-muted: #5a6685;
  --rule: rgba(11, 23, 53, 0.08);
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter Tight', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { overflow-x: hidden; }

.mono { font-family: 'Inter Tight', sans-serif; }

/* ---- Nav ---------------------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(244, 246, 251, 0.78);
  border-bottom: 1px solid rgba(11, 23, 53, 0.06);
}

.nav-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 15px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--navy-900);
  text-decoration: none;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #fff 0 8%, transparent 9%),
    conic-gradient(from 220deg, var(--teal-400), var(--navy-700), var(--teal-500));
  box-shadow:
    0 0 0 2.5px rgba(43,182,194,0.18),
    0 2px 8px rgba(11, 23, 53, 0.28);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-size: 13.5px;
  color: var(--ink-muted);
}

.nav-links a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s;
  letter-spacing: -0.005em;
}

.nav-links a:hover { color: var(--navy-900); }
.nav-links a.active { color: var(--navy-900); font-weight: 500; }

.nav-cta {
  background: var(--navy-900);
  color: #fff;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  box-shadow: 0 1px 4px rgba(11, 23, 53, 0.3);
}

.nav-cta:hover {
  background: var(--navy-700);
  box-shadow: 0 4px 12px rgba(11, 23, 53, 0.32);
}

/* ---- Generic section module --------------------------------------------- */

section.module {
  max-width: 1240px;
  margin: 0 auto;
  padding: 112px 32px 48px;
  scroll-margin-top: 80px;
}

.module-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 72px;
  align-items: end;
  padding-bottom: 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--rule);
}

.module-head .kicker {
  font-family: 'Inter Tight', sans-serif;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--teal-500);
  text-transform: uppercase;
  margin: 0 0 16px;
}

.module-head .title {
  font-size: clamp(38px, 4.4vw, 60px);
  line-height: 0.96;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin: 0;
  color: var(--navy-900);
  text-wrap: balance;
}

.module-head .lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-muted);
  margin: 0;
  max-width: 540px;
  text-wrap: pretty;
}

/* ---- Footer ------------------------------------------------------------- */

footer {
  max-width: 1240px;
  margin: 80px auto 0;
  padding: 24px 32px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-muted);
  font-size: 12.5px;
  border-top: 1px solid var(--rule);
}

/* ---- Responsive --------------------------------------------------------- */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-inner { padding: 14px 20px; }
  .module-head { grid-template-columns: 1fr; gap: 20px; border-bottom: none; padding-bottom: 32px; }
  section.module { padding: 80px 20px 32px; }
  footer { padding: 20px 20px 28px; margin-top: 40px; }
}