:root {
  --color-bg: #0f172a;
  --color-bg-alt: #1e293b;
  --color-surface: #1e293b;
  --color-surface-alt: #273449;
  --color-border: #334155;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-2: #a78bfa;
  --color-ok: #4ade80;
  --color-bad: #f87171;
  --color-warn: #fbbf24;
  --radius: 10px;
  --max-width: 960px;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, Menlo, monospace;
}

:root[data-theme="light"] {
  --color-bg: #f8fafc;
  --color-bg-alt: #eef2f7;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-accent: #0284c7;
  --color-accent-2: #7c3aed;
  --color-ok: #16a34a;
  --color-bad: #dc2626;
  --color-warn: #b45309;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --color-bg: #f8fafc;
    --color-bg-alt: #eef2f7;
    --color-surface: #ffffff;
    --color-surface-alt: #f1f5f9;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-text-muted: #475569;
    --color-accent: #0284c7;
    --color-accent-2: #7c3aed;
    --color-ok: #16a34a;
    --color-bad: #dc2626;
    --color-warn: #b45309;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.55;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: 1.75rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.3rem; margin: 2rem 0 0.75rem; color: var(--color-accent); }
h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }

p { margin: 0 0 1rem; }

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

pre {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.92rem;
}

caption {
  caption-side: bottom;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  padding-top: 0.4rem;
  text-align: left;
}

th, td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-surface-alt);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

figure {
  margin: 1.25rem 0;
}

figcaption {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
}

.overflow-x {
  overflow-x: auto;
}

dfn {
  font-style: normal;
  border-bottom: 1px dashed var(--color-accent);
  cursor: help;
}

ul, ol {
  padding-left: 1.3rem;
}

li {
  margin-bottom: 0.35rem;
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.breadcrumbs a { color: var(--color-text-muted); }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }