.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 64px);
}
.docs-nav .container {
  max-width: none;
  margin: 0;
  padding: 0 20px;
}
@media (max-width: 820px) {
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { display: none; }
}

.docs-sidebar {
  border-right: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 30px 20px;
}
.docs-sidebar-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 14px;
}
.docs-nav-list { display: flex; flex-direction: column; gap: 2px; }
.docs-nav-link {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 500;
  transition: background 150ms ease, color 150ms ease;
}
.docs-nav-link:hover { background: var(--bg-slate); color: var(--ink); }
.docs-nav-link.active { background: var(--ink); color: #fff; }

.docs-main { padding: 42px 48px; max-width: 960px; }
@media (max-width: 640px) { .docs-main { padding: 28px 20px; } }
.docs-footer-links {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border);
}

/* ---- Prose ---------------------------------------------------------- */
.docs-prose { color: #334155; font-size: 0.96rem; line-height: 1.72; }
.docs-prose > :first-child { margin-top: 0; }
.docs-prose h1 {
  font-size: 2rem; color: var(--ink); font-weight: 800;
  letter-spacing: -0.02em; margin: 0 0 18px;
}
.docs-prose h2 {
  font-size: 1.35rem; color: var(--ink); font-weight: 700;
  margin: 38px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.docs-prose h3 { font-size: 1.08rem; color: var(--ink); font-weight: 700; margin: 26px 0 8px; }
.docs-prose p { margin: 0 0 14px; }
.docs-prose ul, .docs-prose ol { margin: 0 0 14px; padding-left: 22px; }
.docs-prose li { margin: 5px 0; }
.docs-prose a { color: var(--accent-700); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
.docs-prose strong { color: var(--ink); font-weight: 700; }
.docs-prose hr { border: none; border-top: 1px solid var(--border); margin: 30px 0; }

.docs-prose code {
  background: var(--bg-slate); border: 1px solid var(--border); border-radius: 5px;
  padding: 1px 6px; font-size: 0.85em;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; color: #0e7490;
}
.docs-prose pre {
  background: #0e1626; color: #e2e8f0; border-radius: 10px;
  padding: 15px 18px; overflow-x: auto; margin: 0 0 18px;
  font-size: 0.84rem; line-height: 1.6;
}
.docs-prose pre code { background: none; border: none; color: inherit; padding: 0; font-size: inherit; }
.docs-prose blockquote {
  border-left: 3px solid var(--accent); background: var(--accent-50);
  padding: 10px 16px; border-radius: 0 8px 8px 0; margin: 0 0 18px; color: #155e75;
}
.docs-prose blockquote p:last-child { margin-bottom: 0; }
.docs-prose img { max-width: 100%; border-radius: 8px; }

/* ---- Tables --------------------------------------------------------- */
.docs-prose table {
  width: 100%;
  margin: 0 0 20px;
  border: 1px solid var(--border);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  font-size: 0.875rem;
}
.docs-prose th,
.docs-prose td {
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.docs-prose thead th {
  background: var(--bg-slate);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}
.docs-prose tbody tr:nth-child(even) { background: var(--bg-soft); }
.docs-prose tbody tr:hover { background: var(--accent-50); }
.docs-prose tbody tr:last-child td { border-bottom: none; }
/* Model sketches: diagrams sit centred in their cell with the caption below. */
.docs-prose table img { display: block; margin: 0 auto 6px; }
.docs-prose table th:empty, .docs-prose table td:empty { padding: 0; border: none; }