/* Shared MDI LABS header/footer chrome — matches /c/ homepage nav + footer */

:root {
  --chrome-bg: #0B0C0E;
  --chrome-ink: #EDEBE4;
  --chrome-ink-dim: #C9C6BD;
  --chrome-muted: #8A8A85;
  --chrome-hairline: rgba(255, 255, 255, 0.08);
  --chrome-hairline-2: rgba(255, 255, 255, 0.12);
  --chrome-hairline-strong: rgba(255, 255, 255, 0.22);
  --chrome-surface: #12141a;
  --chrome-surface-2: #1a1d24;
  --chrome-accent: oklch(0.72 0.09 160);
  --chrome-accent-tint: oklch(0.86 0.06 160);
  --chrome-accent-glow: oklch(0.65 0.12 160 / 0.20);
  --chrome-gutter: 32px;
  --chrome-rule: 1px solid var(--chrome-hairline);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 14, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: var(--chrome-rule);
  color: var(--chrome-ink);
  font-family: "Inter", -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.nav .container,
.nav-inner-wrap {
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--chrome-gutter);
}

.nav-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.nav-left { display: flex; align-items: center; min-width: 0; }
.nav-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }

.nav .logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--chrome-ink);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav .logo .dot {
  width: 6px;
  height: 6px;
  background: var(--chrome-accent);
  display: inline-block;
  border-radius: 50%;
  transform: translateY(-2px);
  box-shadow: 0 0 10px var(--chrome-accent);
}

.nav .logo-tag {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-muted);
  border-left: 1px solid var(--chrome-hairline);
  padding-left: 12px;
  margin-left: 4px;
  font-weight: 400;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  font-size: 14px;
  color: var(--chrome-ink-dim);
  min-width: 0;
}

.nav-links a {
  position: relative;
  padding: 6px 0;
  color: var(--chrome-ink-dim);
  white-space: nowrap;
  transition: color 160ms;
}

.nav-links a:hover { color: var(--chrome-ink); }

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--chrome-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms ease;
}

.nav-links a:hover::after { transform: scaleX(1); }

.nav-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--chrome-ink-dim);
  border: 1px solid var(--chrome-hairline-2);
  background: transparent;
  transition: color 160ms, border-color 160ms, background 160ms;
  flex-shrink: 0;
}

.nav-social:hover {
  color: var(--chrome-accent);
  border-color: var(--chrome-hairline-strong);
  background: var(--chrome-accent-glow);
}

.nav-social:focus-visible {
  outline: 2px solid var(--chrome-accent);
  outline-offset: 2px;
}

.nav-cta {
  background: var(--chrome-accent);
  color: var(--chrome-bg);
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 180ms;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--chrome-accent-tint);
  box-shadow: 0 0 30px var(--chrome-accent-glow);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--chrome-hairline-2);
  background: var(--chrome-surface);
  color: var(--chrome-ink);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 160ms, background 160ms, color 160ms;
}

.nav-toggle:hover {
  border-color: var(--chrome-hairline-strong);
  background: var(--chrome-surface-2);
  color: var(--chrome-accent);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--chrome-accent);
  outline-offset: 2px;
}

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 18px;
  height: 14px;
}

.nav-toggle-bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
  transform-origin: center;
}

.nav.is-open .nav-toggle-bars span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav.is-open .nav-toggle-bars span:nth-child(2) { opacity: 0; }

.nav.is-open .nav-toggle-bars span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Footer — matches homepage Footer() */
.foot {
  background: var(--chrome-bg);
  color: var(--chrome-ink-dim);
  padding: 80px 0 32px;
  border-top: var(--chrome-rule);
  font-family: "Inter", -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.foot .container {
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--chrome-gutter);
}

.foot-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.foot-brand { max-width: 320px; }

.foot-brand .logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--chrome-ink);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.foot-brand .logo .dot {
  width: 6px;
  height: 6px;
  background: var(--chrome-accent);
  display: inline-block;
  border-radius: 50%;
  transform: translateY(-2px);
  box-shadow: 0 0 10px var(--chrome-accent);
}

.foot-brand p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--chrome-muted);
  margin: 16px 0 0;
}

.foot-col h4 {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--chrome-muted);
  font-weight: 500;
  margin: 0 0 18px;
}

.foot-col a {
  display: block;
  font-size: 14px;
  padding: 6px 0;
  color: var(--chrome-ink-dim);
  transition: color 160ms;
}

.foot-col a:hover { color: var(--chrome-accent); }

.foot-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: var(--chrome-rule);
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--chrome-muted);
}

@media (max-width: 1180px) {
  .nav .container,
  .foot .container { padding-left: 20px; padding-right: 20px; }
  .nav-inner { gap: 16px; }
  .nav .logo { font-size: 18px; gap: 6px; }
  .nav .logo-tag { display: none; }
  .nav-links {
    flex: 1 1 auto;
    gap: clamp(12px, 1.5vw, 20px);
    font-size: 13px;
  }
  .nav-cta { padding: 10px 14px; font-size: 13px; }
}

@media (max-width: 1040px) {
  .nav .container,
  .foot .container { padding-left: 16px; padding-right: 16px; }
  .nav .logo { font-size: 17px; }
  .nav-links { gap: 12px; font-size: 12.5px; }
  .nav-cta { padding: 9px 12px; }
}

@media (max-width: 960px) {
  .nav {
    position: relative;
    background: rgba(11, 12, 14, 0.92);
  }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 12px;
    background: rgba(11, 12, 14, 0.97);
    border-bottom: var(--chrome-rule);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
    z-index: 60;
  }
  .nav.is-open .nav-links { display: flex; }
  .nav-links a {
    padding: 14px var(--chrome-gutter);
    font-size: 15px;
    border-bottom: 1px solid var(--chrome-hairline);
    white-space: normal;
  }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-links a::after { display: none; }
  .nav-links a:hover {
    color: var(--chrome-accent);
    background: rgba(255, 255, 255, 0.03);
  }
  .nav-right { gap: 10px; }
  .nav-social { width: 36px; height: 36px; }
  .nav .logo { font-size: 19px; }
  .nav .logo-tag { display: none; }
  .nav-cta { padding: 10px 14px; font-size: 13px; }
  .foot-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .nav-inner { height: 64px; }
  .nav .logo { font-size: 17px; letter-spacing: -0.03em; }
  .nav-cta {
    padding: 10px 12px;
    max-width: 136px;
    white-space: normal;
    line-height: 1.15;
    justify-content: center;
  }
  .foot-top { grid-template-columns: 1fr; }
  .foot-bot { flex-direction: column; align-items: flex-start; }
}