:root {
  --bg: #f8f9fb;
  --panel: #fff;
  --border: #e3e6ea;
  --text: #24292f;
  --muted: #6a737d;
  --accent: #0969da;
  --accent-hover: #0552a8;
  --code-bg: #f6f8fa;
  --sidebar-bg: #f0f2f5;
  --active: #dbe4ee;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; color: var(--text); background: var(--bg); font-size: 14px; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.topbar {
  display: flex; align-items: center; padding: 10px 20px;
  background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  gap: 20px;
}
.brand { font-weight: 700; font-size: 16px; }
.searchbar { flex: 1; max-width: 500px; position: relative; }
.searchbar input { width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
#results { position: absolute; top: 40px; left: 0; right: 0; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; max-height: 400px; overflow-y: auto; display: none; box-shadow: 0 4px 12px rgba(0,0,0,.08); z-index: 200; }
.hit { display: block; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.hit b { display: block; font-size: 13px; }
.hit span { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.hit:hover { background: var(--sidebar-bg); text-decoration: none; }
.no-hit { padding: 12px; color: var(--muted); text-align: center; }
.user { color: var(--muted); font-size: 12px; }
.user a { color: var(--muted); }

.layout { display: flex; height: calc(100vh - 51px); }
.sidebar {
  width: 280px; background: var(--sidebar-bg); border-right: 1px solid var(--border);
  overflow-y: auto; padding: 10px 0;
}
.group { margin-bottom: 8px; }
.group-name { padding: 8px 16px 4px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }
.doc-link { display: block; padding: 6px 20px; font-size: 13px; color: var(--text); border-left: 3px solid transparent; }
.doc-link:hover { background: var(--panel); text-decoration: none; }
.doc-link.active { background: var(--active); border-left-color: var(--accent); font-weight: 500; }

.content { flex: 1; overflow-y: auto; padding: 30px 40px; }
.doc-header h1 { margin: 0 0 20px; font-size: 24px; border-bottom: 1px solid var(--border); padding-bottom: 10px; }
.markdown-body { max-width: 900px; line-height: 1.6; }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin-top: 24px; margin-bottom: 12px; }
.markdown-body h1 { font-size: 22px; }
.markdown-body h2 { font-size: 18px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.markdown-body h3 { font-size: 16px; }
.markdown-body code { background: var(--code-bg); padding: 2px 6px; border-radius: 3px; font-family: "SF Mono", Menlo, monospace; font-size: 12.5px; }
.markdown-body pre { background: var(--code-bg); padding: 12px; border-radius: 6px; overflow-x: auto; }
.markdown-body pre code { background: transparent; padding: 0; }
.markdown-body table { border-collapse: collapse; margin: 12px 0; }
.markdown-body table th, .markdown-body table td { border: 1px solid var(--border); padding: 6px 10px; }
.markdown-body table th { background: var(--sidebar-bg); }
.markdown-body blockquote { border-left: 3px solid var(--border); margin: 12px 0; padding: 0 12px; color: var(--muted); }
.markdown-body hr { border: 0; border-top: 1px solid var(--border); margin: 20px 0; }
.markdown-body ul, .markdown-body ol { padding-left: 24px; }

.muted { color: var(--muted); }
.err { color: #c53030; background: #fed7d7; padding: 8px 12px; border-radius: 6px; margin: 10px 0; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--sidebar-bg); }
.login-card { background: var(--panel); padding: 30px; border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.06); width: 320px; }
.login-card h1 { margin: 0 0 20px; text-align: center; font-size: 20px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin: 12px 0 4px; }
.login-card input { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 4px; font-size: 14px; }
.login-card button { width: 100%; margin-top: 20px; padding: 10px; background: var(--accent); color: #fff; border: 0; border-radius: 4px; cursor: pointer; font-size: 14px; font-weight: 500; }
.login-card button:hover { background: var(--accent-hover); }

/* Codehilite */
.highlight { background: var(--code-bg); border-radius: 6px; }
.highlight pre { margin: 0; padding: 12px; }