:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --surface-alt: #1a1a1a;
  --border: #222;
  --border-hover: #333;
  --text: #d4d4d4;
  --text-dim: #666;
  --accent: #76b900;
  --accent-dim: #4a7500;
  --font-sans: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'Space Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(118, 185, 0, 0.2); }
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #222; }
::-webkit-scrollbar-thumb:hover { background: #333; }
*:focus-visible { outline: 1px dashed rgba(255,255,255,0.15); outline-offset: 2px; }

/* ── Layout ── */
.wrapper { display: flex; min-height: 100vh; }

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 220px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 28px 0;
  overflow-y: auto;
  z-index: 10;
  flex-shrink: 0;
}
nav .logo {
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  letter-spacing: 0.1em;
}
nav .logo a { color: var(--accent); text-decoration: none; }
nav .logo a:hover { color: #a0ff30; }

nav .nav-section {
  display: block;
  padding: 16px 20px 4px;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  cursor: default;
}
nav a.page-link {
  display: block;
  padding: 5px 20px 5px 28px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 12px;
  border-left: 2px solid transparent;
  transition: color .15s, border-color .15s, background .15s;
}
nav a.page-link:hover { color: var(--text); background: rgba(255,255,255,0.02); }
nav a.page-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(118, 185, 0, 0.05);
}

/* ── Main ── */
main {
  margin-left: 220px;
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 56px 2rem 120px;
}
main > .content {
  width: 100%;
  max-width: 860px;
}

/* ── Hero ── */
.hero {
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.hero h1 {
  font-size: 40px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #eee;
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}
.hero p {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ── Typography ── */
h2 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #eee;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
  margin-top: 36px;
  margin-bottom: 12px;
}
h4 {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent);
  margin-top: 28px;
  margin-bottom: 8px;
}
p { font-size: 13px; margin-bottom: 18px; color: var(--text); line-height: 1.8; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: #a0ff30; }

/* ── Code ── */
code, .code {
  font-family: var(--font-mono);
  font-size: 12px;
}
p > code, li > code, td > code {
  background: var(--surface-alt);
  padding: 1px 6px;
  color: #d0d0d0;
}
pre {
  background: #0e0e0e;
  border: 1px solid var(--border);
  padding: 18px;
  margin-bottom: 24px;
  overflow-x: auto;
  tab-size: 4;
}
pre code { background: none; padding: 0; font-size: 12px; color: #d0d0d0; }
.hljs { background: transparent !important; }

/* ── Inline callout / info ── */
.callout {
  background: var(--surface);
  border-left: 2px solid var(--accent);
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 12px;
  color: var(--text-dim);
}

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 12px;
}
th, td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--text-dim); font-weight: 600; font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; }
td { color: var(--text); font-size: 12px; }
tr:hover td { background: rgba(255,255,255,0.01); }

/* ── API method list ── */
.method {
  margin-bottom: 20px;
}
.method .sig {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #c0c0c0;
  padding: 8px 12px;
  background: var(--surface);
  border-left: 2px solid var(--border-hover);
  margin-bottom: 6px;
}
.method .sig .keyword { color: var(--accent); }
.method .sig .fn-name { color: #7ec8e3; }
.method .sig .type { color: #c9a0ff; }
.method .desc {
  font-size: 12px;
  color: var(--text-dim);
  padding-left: 14px;
  line-height: 1.6;
}

/* ── Type header ── */
.type-header {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: #eee;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 10px 14px;
  margin-bottom: 16px;
}
.type-header .keyword { color: var(--accent); }
.type-header .type-name { color: #fff; }

/* ── Section ── */
section { margin-bottom: 72px; }
section:last-child { margin-bottom: 0; }

/* ── Mechanical click ── */
@keyframes mechClick {
  0% { transform: scale(1); }
  40% { transform: scale(0.92); }
  70% { transform: scale(1.04); }
  100% { transform: scale(1); }
}
.mech-click:active { animation: mechClick 0.2s ease-out; }

/* ── Tag/badge ── */
.tag {
  display: inline-block;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border: 1px solid var(--border-hover);
  color: var(--text-dim);
  margin-right: 4px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  nav { position: static; width: 100%; border-right: none; border-bottom: 1px solid var(--border); padding: 16px 0; }
  nav .logo { padding: 0 16px 16px; }
  nav .nav-section { padding: 12px 16px 4px; }
  nav a.page-link { padding: 5px 16px 5px 24px; }
  main { margin-left: 0; padding: 28px 16px 80px; }
  .hero h1 { font-size: 26px; }
  .wrapper { flex-direction: column; }
}