/* site/assets/tiba.css — Tiba index page (self-contained, no CDN deps) */

:root {
  --bg: #0e1016;
  --fg: #e6e9ef;
  --fg-dim: #9aa3b2;
  --accent: #4dd0a4;
  --roadmap: #f4c95d;
  --card: #1a1d27;
  --border: #2a2e3a;
  --max-w: 1100px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.55;
  font-size: 16px;
}

.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
  text-align: center;
}
.hero h1 {
  font-size: clamp(3rem, 7vw, 5rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.03em;
}
.hero .tagline {
  font-size: 1.15rem;
  color: var(--fg-dim);
  margin: 0 0 0.5rem;
}
.hero .version {
  font-size: 0.85rem;
  color: var(--fg-dim);
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
}

.layers {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.layers h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--fg-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}
.layers.operational h2 { color: var(--accent); }
.layers.roadmap h2 { color: var(--roadmap); }

.layer { margin-bottom: 2rem; }
.layer h3 {
  font-size: 1.1rem;
  margin: 0 0 0.75rem;
  color: var(--fg);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}
.roadmap-card {
  border-left-style: dashed;
  border-left-color: var(--roadmap);
  opacity: 0.85;
}
.card h4 { margin: 0 0 0.5rem; font-size: 1rem; }
.card h4 a { color: var(--fg); text-decoration: none; }
.card h4 a:hover { color: var(--accent); text-decoration: underline; }
.card .metric {
  margin: 0.25rem 0;
  font-size: 1rem;
}
.card .metric strong { color: var(--accent); font-size: 1.25rem; }
.card .qualifier {
  margin: 0.25rem 0;
  font-size: 0.85rem;
  color: var(--fg-dim);
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
}
.card .source {
  margin: 0.5rem 0 0;
  font-size: 0.75rem;
  color: var(--fg-dim);
}

footer {
  max-width: var(--max-w);
  margin: 3rem auto 2rem;
  padding: 2rem 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--fg-dim);
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }
footer .trademark {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  font-style: italic;
}

@media (max-width: 600px) {
  .hero { padding: 2rem 1rem 1rem; }
  .layers { padding: 1rem; }
}