:root {
  --bg: #0b0d10;
  --surface: #14181d;
  --surface-2: #1b2027;
  --border: #262d36;
  --fg: #e6e8eb;
  --fg-muted: #a4adb8;
  --accent: #6aa9ff;
  --accent-2: #8be0c7;
  --code-bg: #0e1216;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fa;
    --surface: #ffffff;
    --surface-2: #f0f3f7;
    --border: #d9dde3;
    --fg: #1a1f25;
    --fg-muted: #515b66;
    --accent: #1f5fbf;
    --accent-2: #1f7a5a;
    --code-bg: #f4f6f8;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(140%) blur(8px);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-weight: 600;
}
.site-brand:hover { text-decoration: none; }
.site-brand-logo {
  display: block;
  height: 40px;
  width: auto;
}
/* The logo's wordmark is dark navy — reads fine on white, disappears on
   the dark theme. Invert it so the gear and wordmark stay visible. */
@media (prefers-color-scheme: dark) {
  .site-brand-logo { filter: invert(1) hue-rotate(180deg); }
}
.site-nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-nav a {
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 500;
}
.site-nav a:hover { color: var(--fg); text-decoration: none; }

/* page */
.doc-main { padding: 32px 24px 64px; }
.doc-page-header {
  margin: 8px 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.doc-page-header h1 {
  font-size: clamp(26px, 3.5vw, 36px);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.doc-meta { color: var(--fg-muted); font-size: 13px; margin: 0; }

.doc-content h1 { font-size: 28px; margin: 32px 0 12px; line-height: 1.25; letter-spacing: -0.005em; }
.doc-content h2 { font-size: 22px; margin: 28px 0 10px; line-height: 1.3; padding-bottom: 4px; border-bottom: 1px solid var(--border); }
.doc-content h3 { font-size: 18px; margin: 24px 0 8px; }
.doc-content h4 { font-size: 16px; margin: 20px 0 6px; color: var(--fg-muted); }
.doc-content p, .doc-content ul, .doc-content ol { margin: 0 0 14px; }
.doc-content li { margin-bottom: 4px; }
.doc-content blockquote {
  margin: 0 0 14px;
  padding: 8px 14px;
  border-left: 3px solid var(--accent);
  background: var(--surface-2);
  color: var(--fg-muted);
  border-radius: 4px;
}
.doc-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
}
.doc-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  margin: 0 0 16px;
  font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.doc-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
}
.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 14px;
}
.doc-content th, .doc-content td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.doc-content th { background: var(--surface-2); font-weight: 600; }
.doc-content tr:last-child td { border-bottom: none; }
.doc-content img { max-width: 100%; height: auto; border-radius: 6px; }
.doc-content hr { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

.doc-edit-link {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}
.doc-edit-link a { color: var(--fg-muted); }
.doc-edit-link a:hover { color: var(--accent); }

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  color: var(--fg-muted);
  font-size: 13px;
  text-align: center;
}

/* Rouge syntax-highlighting palette (subset, matches dark/light) */
.highlight .c, .highlight .c1, .highlight .cm { color: #6a737d; font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn { color: #d73a49; }
@media (prefers-color-scheme: dark) {
  .highlight .k, .highlight .kd, .highlight .kn { color: #ff7b72; }
  .highlight .c, .highlight .c1, .highlight .cm { color: #8b949e; }
}
.highlight .s, .highlight .s1, .highlight .s2 { color: #032f62; }
@media (prefers-color-scheme: dark) {
  .highlight .s, .highlight .s1, .highlight .s2 { color: #a5d6ff; }
}
.highlight .n, .highlight .nx { color: var(--fg); }
.highlight .nb { color: #6f42c1; }
@media (prefers-color-scheme: dark) {
  .highlight .nb { color: #d2a8ff; }
}