:root {
  color-scheme: light dark;
  --fg: #1a1a2e;
  --bg: #ffffff;
  --muted: #5a5a72;
  --accent: #2f2f6e;
  --border: #e2e2ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #eaeaf4;
    --bg: #14141f;
    --muted: #a0a0b8;
    --accent: #8f8fe8;
    --border: #2a2a3c;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

header, main, footer {
  max-width: 48rem;
  margin: 0 auto;
  padding: 1.5rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

nav a:first-child {
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}

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

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

code {
  background: var(--border);
  padding: 0.1em 0.35em;
  border-radius: 0.25em;
}

pre {
  overflow-x: auto;
  background: var(--border);
  padding: 1rem;
  border-radius: 0.5em;
}

pre code {
  background: none;
  padding: 0;
}