:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e7ecf3;
  --muted: #9aa8bc;
  --accent: #6ee7b7;
  --border: #2d3a4f;
  --warn: #fbbf24;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  line-height: 1.6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); }

header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #152033, var(--bg));
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

.tagline { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.95rem; }

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

nav {
  position: sticky;
  top: 1rem;
  align-self: start;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
}

nav ul { list-style: none; margin: 0; padding: 0; }
nav li + li { margin-top: 0.35rem; }
nav a { text-decoration: none; font-size: 0.92rem; }
nav a[aria-current="page"] { font-weight: 600; color: var(--text); }

main {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  min-width: 0;
}

main h1, main h2, main h3 { line-height: 1.25; }
main table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
main th, main td { border: 1px solid var(--border); padding: 0.5rem 0.65rem; text-align: left; vertical-align: top; }
main th { background: #111827; }
main code { background: #111827; padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.9em; }
main pre { overflow-x: auto; background: #111827; padding: 1rem; border-radius: 8px; }
main pre code { background: none; padding: 0; }

.home-list { padding-left: 1.2rem; }
.warn { color: var(--warn); font-weight: 600; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  nav { position: static; }
}