/* ========== Design tokens ========== */
:root {
  --bg: #080808;
  --bg-surface: #0e0e0e;
  --bg-elevated: #141414;
  --border: #1e1e1e;
  --border-mid: #2a2a2a;

  --red: #dc2626;
  --red-bright: #ef4444;
  --red-dim: rgba(220, 38, 38, 0.12);

  --green: #22c55e;
  --yellow: #eab308;
  --blue: #3b82f6;

  --text: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #606060;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
}

/* ========== Reset & base ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--red-dim); color: var(--text); }

/* scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-mid); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--red); }

/* ========== Shell (grid) ========== */
.docs-shell {
  display: grid;
  grid-template-rows: 56px 1fr;
  grid-template-columns: 280px 1fr;
  grid-template-areas:
    "header header"
    "sidebar main";
  height: 100vh;
}

.docs-header { grid-area: header; }
.docs-sidebar { grid-area: sidebar; }
.docs-main { grid-area: main; }

/* ========== Header ========== */
.docs-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.docs-hamburger {
  display: none;
  flex-direction: column;
  gap: 3px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.docs-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

.docs-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
}
.docs-brand-primary { color: var(--text); }
.docs-brand-accent { color: var(--red-bright); }
.docs-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border: 1px solid var(--border-mid);
  border-radius: 3px;
  color: var(--text-secondary);
  margin-left: 6px;
}

.docs-header-spacer { flex: 1; }

.docs-search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 300px;
  padding: 6px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--sans);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.docs-search:hover { border-color: var(--border-mid); }
.docs-search span { flex: 1; text-align: left; }
.docs-search kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-mid);
  border-radius: 3px;
  color: var(--text-muted);
}

.docs-header-links {
  display: flex;
  gap: 18px;
  font-size: 13px;
  font-weight: 500;
}
.docs-header-links a {
  color: var(--text-secondary);
  transition: color 0.15s;
}
.docs-header-links a:hover { color: var(--red-bright); }

/* ========== Sidebar ========== */
.docs-sidebar {
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 24px 0;
}

.sidebar-group { padding: 0 20px; margin-bottom: 22px; }
.sidebar-group-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 12px;
  margin-bottom: 6px;
}
.sidebar-link {
  display: block;
  padding: 6px 12px;
  font-size: 13.5px;
  color: var(--text-secondary);
  border-radius: 4px;
  transition: all 0.1s;
  cursor: pointer;
}
.sidebar-link:hover {
  color: var(--text);
  background: var(--bg-elevated);
}
.sidebar-link.active {
  color: var(--red-bright);
  background: var(--red-dim);
  font-weight: 600;
}

/* ========== Main content ========== */
.docs-main {
  overflow-y: auto;
  background: var(--bg);
}
.docs-content {
  max-width: 820px;
  padding: 40px 48px 80px;
}
.docs-loading { color: var(--text-muted); padding: 40px 0; }

/* Headings */
#docs-page h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 10px;
}
#docs-page .subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
#docs-page h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--red);
  line-height: 1.3;
}
#docs-page h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 10px;
}

#docs-page p { margin: 0 0 14px; color: var(--text); }
#docs-page p + p { margin-top: 14px; }

#docs-page a {
  color: var(--red-bright);
  border-bottom: 1px dashed var(--red-dim);
  transition: all 0.1s;
}
#docs-page a:hover { border-bottom-color: var(--red-bright); }

/* Lists */
#docs-page ol,
#docs-page ul {
  margin: 0 0 16px 22px;
  padding: 0;
}
#docs-page li { margin-bottom: 6px; }

/* Code */
#docs-page code {
  font-family: var(--mono);
  font-size: 13px;
  padding: 2px 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--red-bright);
}
#docs-page pre {
  margin: 14px 0 18px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
}
#docs-page pre code {
  padding: 0;
  background: none;
  border: none;
  color: var(--text);
  font-size: inherit;
}

/* Tables */
#docs-page table {
  border-collapse: collapse;
  width: 100%;
  margin: 18px 0;
  font-size: 13px;
}
#docs-page th,
#docs-page td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border);
}
#docs-page th {
  background: var(--bg-surface);
  font-weight: 600;
  color: var(--text-secondary);
}

/* Callouts */
.callout {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  margin: 18px 0;
  border-radius: 6px;
  border: 1px solid;
}
.callout-icon { flex-shrink: 0; font-size: 16px; line-height: 1.5; }
.callout-body { flex: 1; font-size: 14px; line-height: 1.6; }
.callout-body > *:last-child { margin-bottom: 0 !important; }

.callout.info { background: rgba(59, 130, 246, 0.06); border-color: rgba(59, 130, 246, 0.4); }
.callout.info .callout-icon { color: var(--blue); }
.callout.warning { background: rgba(234, 179, 8, 0.06); border-color: rgba(234, 179, 8, 0.4); }
.callout.warning .callout-icon { color: var(--yellow); }
.callout.danger { background: rgba(220, 38, 38, 0.06); border-color: rgba(220, 38, 38, 0.4); }
.callout.danger .callout-icon { color: var(--red-bright); }
.callout.success { background: rgba(34, 197, 94, 0.06); border-color: rgba(34, 197, 94, 0.4); }
.callout.success .callout-icon { color: var(--green); }

/* Prev/Next nav */
.docs-pagenav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.docs-pagenav a {
  display: block;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.15s;
}
.docs-pagenav a:hover {
  border-color: var(--red);
  background: var(--bg-elevated);
}
.docs-pagenav a.next { text-align: right; }
.docs-pagenav-dir {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.docs-pagenav-title {
  font-size: 14px;
  color: var(--text);
  margin-top: 4px;
  font-weight: 500;
}

/* ========== Search modal ========== */
.docs-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 100;
  padding-top: 120px;
  align-items: flex-start;
  justify-content: center;
}
.docs-modal.open { display: flex; }
.docs-modal-box {
  width: 100%;
  max-width: 560px;
  background: var(--bg-surface);
  border: 1px solid var(--border-mid);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}
.docs-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.docs-modal-header input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 15px;
  font-family: var(--sans);
}
.docs-modal-header svg { color: var(--text-muted); }
.docs-modal-header kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 7px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-mid);
  border-radius: 3px;
  color: var(--text-muted);
}
.docs-modal-results { max-height: 420px; overflow-y: auto; padding: 8px; }
.docs-modal-result {
  padding: 10px 14px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.1s;
}
.docs-modal-result:hover,
.docs-modal-result.selected {
  background: var(--red-dim);
}
.docs-modal-result-group {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.docs-modal-result-title {
  font-size: 14px;
  color: var(--text);
  margin-top: 2px;
}
.docs-modal-empty { padding: 20px; text-align: center; color: var(--text-muted); font-size: 13px; }

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .docs-shell { grid-template-columns: 1fr; grid-template-areas: "header" "main"; }
  .docs-sidebar {
    position: fixed;
    top: 56px; bottom: 0; left: 0;
    width: 280px;
    z-index: 20;
    transform: translateX(-100%);
    transition: transform 0.2s;
  }
  .docs-sidebar.open { transform: translateX(0); }
  .docs-hamburger { display: flex; }
  .docs-search { min-width: 0; flex: 1; max-width: 260px; }
  .docs-search span { display: none; }
  .docs-header-links a:not(:last-child) { display: none; }
  .docs-content { padding: 24px 20px 60px; }
  #docs-page h1 { font-size: 24px; }
  .docs-pagenav { grid-template-columns: 1fr; }
}