:root {
  --bg: #0a0e14;
  --panel: #0d1117;
  --panel-2: #161b22;
  --line: #21262d;
  --text: #c9d1d9;
  --muted: #6e7681;
  --link: #00e5ff;
  --accent: #00ff41;
  --red: #ff3c3c;
  --amber: #ffb300;
  --sidebar-width: 260px;
  --mono: 'Fira Code', 'Cascadia Code', 'Source Code Pro', monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg);
  color: var(--text);
}

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

.docs-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: 48px 1fr;
  grid-template-areas: "top top" "side main";
}

.topbar {
  grid-area: top;
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }

.top-links { display: flex; align-items: center; gap: 12px; }
.top-links a { font-size: 10px; color: var(--muted); }

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  font-family: var(--mono);
  padding: 4px 8px;
  cursor: pointer;
  font-size: 10px;
}

.sidebar {
  grid-area: side;
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: 14px 10px 24px;
  overflow-y: auto;
}

.sidebar-overlay { display: none; }

.sidebar h3 {
  margin: 6px 8px 8px;
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-group { margin-bottom: 8px; }
.nav-item {
  display: block;
  margin: 2px 0;
  padding: 7px 10px;
  color: var(--text);
  font-size: 11px;
}
.nav-item:hover { background: var(--panel-2); text-decoration: none; }
.nav-item.active {
  background: rgba(0,255,65,0.06);
  border-left: 2px solid var(--accent);
  color: var(--accent);
}

.main { grid-area: main; padding: 16px; }

.article {
  max-width: 860px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 24px;
}

h1 { margin-top: 0; font-size: 24px; color: var(--accent); letter-spacing: 2px; }
h2 { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 14px; font-size: 14px; color: var(--link); }
h3 { margin-top: 16px; font-size: 12px; color: var(--text); }
p, li { color: var(--muted); line-height: 1.7; font-size: 12px; }
ul, ol { padding-left: 20px; }
strong { color: var(--text); }

pre {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 12px;
  overflow-x: auto;
  font-size: 11px;
}
code { font-family: var(--mono); color: var(--accent); font-size: 11px; }
pre code { color: var(--text); }

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 11px; }
th { text-align: left; padding: 6px 10px; background: var(--panel-2); border: 1px solid var(--line); color: var(--link); font-size: 10px; text-transform: uppercase; letter-spacing: 1px; }
td { padding: 6px 10px; border: 1px solid var(--line); color: var(--muted); }

.callout {
  border: 1px solid rgba(0,255,65,0.2);
  background: rgba(0,255,65,0.04);
  padding: 12px 14px;
  margin: 12px 0;
  border-left: 3px solid var(--accent);
}
.callout-warn {
  border-color: rgba(255,179,0,0.2);
  background: rgba(255,179,0,0.04);
  border-left-color: var(--amber);
}
.callout-danger {
  border-color: rgba(255,60,60,0.2);
  background: rgba(255,60,60,0.04);
  border-left-color: var(--red);
}

.badge {
  display: inline-block;
  font-size: 9px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  color: var(--muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.badge-green { border-color: var(--accent); color: var(--accent); }
.badge-cyan { border-color: var(--link); color: var(--link); }
.badge-amber { border-color: var(--amber); color: var(--amber); }
.badge-red { border-color: var(--red); color: var(--red); }

@media (max-width: 980px) {
  .docs-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 48px 1fr;
    grid-template-areas: "top" "main";
  }
  .menu-toggle { display: inline-block; }
  .top-links a { display: none; }
  .sidebar {
    position: fixed; top: 0; left: 0; width: min(86vw, 300px); height: 100vh;
    z-index: 30; transform: translateX(-100%); transition: transform 0.22s ease;
    overflow-y: auto; padding-top: 60px;
  }
  .docs-shell.nav-open .sidebar { transform: translateX(0); }
  .sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 20; }
  .docs-shell.nav-open .sidebar-overlay { display: block; }
  .main { padding: 12px; }
  .article { padding: 16px; }
  h1 { font-size: 20px; }
}