/* ─── Docs layout ───────────────────────────────────────── */
html, body {
  background: #0C1622;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:root {
  --blue:          #1E90FF;
  --blue-dark:     #1A7CE0;
  --blue-mid:      #3A7ABF;
  --blue-glow:     #5BC0FF;
  --blue-dim:      #1E3450;
  --bg:            #0C1622;
  --bg2:           #0A1520;
  --bg3:           #152030;
  --bg4:           #1A2A40;
  --border:        #1E3450;
  --border-accent: #2A5090;
  --text:          #E8F0FE;
  --muted:         #5A7A9A;
  --dim:           #3A5A7A;
  --success:       #2ECC71;
  --danger:        #E04520;
  --radius:        8px;
}

.docs-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: calc(100vh - 64px);
  background: var(--bg);
}

/* ─── Sidebar ───────────────────────────────────────────── */
.docs-sidebar {
  border-right: 1px solid var(--border);
  padding: 32px 0 48px;
  position: sticky;
  top: 64px;
  height: calc(100vh - 64px);
  overflow-y: auto;
  background: var(--bg2);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.docs-sidebar::-webkit-scrollbar { width: 4px; }
.docs-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-section {
  padding: 0 20px 24px;
}

.sidebar-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
  padding: 0 8px 8px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.sidebar-link {
  display: block;
  padding: 7px 10px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 2px;
  border-left: 2px solid transparent;
  transition: color .15s, background .15s, border-color .15s;
  text-decoration: none;
  line-height: 1.3;
}
.sidebar-link:hover {
  color: var(--text);
  background: rgba(30,144,255,.06);
  border-left-color: var(--blue-mid);
  text-decoration: none;
}
.sidebar-link.active {
  color: var(--blue);
  background: rgba(30,144,255,.08);
  border-left-color: var(--blue);
  font-weight: 700;
}

/* ─── Content area ──────────────────────────────────────── */
.docs-content {
  padding: 48px 56px 80px;
  min-width: 0;
  max-width: 960px;
}

.docs-body {
  max-width: 800px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
}

.docs-body h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: .5em;
  padding-bottom: .3em;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.docs-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 2em;
  margin-bottom: .6em;
  color: var(--blue-glow);
}

.docs-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 1.8em;
  margin-bottom: .5em;
  color: var(--text);
}

.docs-body p {
  margin-bottom: 1.2em;
  color: var(--muted);
}

.docs-body a { color: var(--blue-glow); }
.docs-body a:hover { text-decoration: underline; }

.docs-body strong { color: var(--text); }

.docs-body ul, .docs-body ol {
  margin: 0 0 1.2em 1.5em;
  color: var(--muted);
}
.docs-body li { margin-bottom: .3em; }

.docs-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* ─── Tables ────────────────────────────────────────────── */
.docs-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: .9rem;
}

.docs-body th {
  background: var(--bg3);
  color: var(--text);
  font-weight: 700;
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--border);
  letter-spacing: .04em;
}

.docs-body td {
  padding: 9px 14px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.docs-body tr:nth-child(even) td { background: rgba(30,144,255,.03); }

.docs-body th:first-child { border-top-left-radius: 2px; }
.docs-body th:last-child { border-top-right-radius: 2px; }

/* ─── Code blocks ───────────────────────────────────────── */
.docs-body code {
  background: rgba(30,144,255,.08);
  border: 1px solid rgba(30,144,255,.15);
  padding: 2px 7px;
  border-radius: 2px;
  font-size: .85em;
  color: var(--blue-glow);
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

.docs-body pre {
  background: #0A0E14;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 1.2em 0;
  line-height: 1.55;
}

.docs-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #E6E6E6;
  font-size: .85rem;
  tab-size: 4;
}

/* ─── Blockquotes ───────────────────────────────────────── */
.docs-body blockquote {
  border-left: 3px solid var(--blue);
  padding: 12px 20px;
  margin: 1.2em 0;
  background: rgba(30,144,255,.04);
  border-radius: 0 2px 2px 0;
  color: var(--muted);
}

.docs-body blockquote strong { color: var(--text); }

/* ─── Mermaid ───────────────────────────────────────────── */
.docs-body .mermaid {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 24px;
  margin: 1.2em 0;
  text-align: center;
  cursor: zoom-in;
  transition: border-color .2s;
  overflow-x: auto;
}
.docs-body .mermaid:hover {
  border-color: var(--border-accent);
}

/* ─── Mermaid Lightbox ──────────────────────────────────── */
.mermaid-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,12,15,.96);
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.mermaid-lightbox.open { display: flex; }

.mermaid-lightbox-toolbar {
  position: fixed;
  top: 16px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 1;
}

.mermaid-lightbox-button {
  padding: 8px 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
  cursor: pointer;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .05em;
  transition: border-color .2s, color .2s, background .2s;
}
.mermaid-lightbox-button:hover {
  border-color: var(--blue);
  color: var(--blue-glow);
  background: rgba(30,144,255,.06);
}

.mermaid-lightbox-viewport {
  width: 90vw;
  height: 85vh;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mermaid-lightbox-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: none;
}

.mermaid-lightbox-hint {
  position: fixed;
  bottom: 20px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: .7rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--dim);
  z-index: 1;
}

/* ─── Sidebar mobile toggle ─────────────────────────────── */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar-toggle { display: block; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar {
    position: fixed;
    left: 0;
    top: 64px;
    bottom: 0;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform .3s;
    width: 280px;
    background: var(--bg2);
  }
  .docs-sidebar.open { transform: translateX(0); }
  .docs-content {
    padding: 24px 16px;
  }
}