:root {
  --fg: #1f2328;
  --muted: #57606a;
  --bg: #ffffff;
  --surface: #f6f8fa;
  --border: #d0d7de;
  --accent: #0969da;
  --code-bg: #f6f8fa;
  --maxw: 900px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

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

/* Header */
.site-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--fg); }
.site-nav { display: flex; gap: 1rem; }
.site-nav a { color: var(--muted); }

/* Content */
.content {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

h1 { font-size: 2rem; margin-top: 0; }
h2 { border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; margin-top: 2.5rem; }
h3 { margin-top: 1.8rem; }

.content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
  border-radius: 8px;
  border: 1px solid var(--border);
}

p, li { max-width: 75ch; }

blockquote {
  margin: 1rem 0;
  padding: 0.4rem 1rem;
  border-left: 4px solid var(--accent);
  color: var(--muted);
  background: var(--surface);
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--code-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 5px;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
}
pre code { background: none; padding: 0; }

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
}
th, td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
th { background: var(--surface); }

/* Cards on the index */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  background: var(--surface);
}
.card h3 { margin-top: 0; }

/* Capability list */
.cap-list { list-style: none; padding-left: 0; }
.cap-list li {
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border);
}
.cap-list li:last-child { border-bottom: none; }
.badge {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0 0.4rem;
  margin-right: 0.4rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}