/* ═══════════════════════════════════════════════════
   GraphLink — Documentation Styles
   ═══════════════════════════════════════════════════ */

/* ── Docs layout ────────────────────────────────────── */
.docs-page {
  padding-top: var(--nav-h);
  min-height: 100vh;
}

.docs-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 0;
}

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

.sidebar-group {
  margin-bottom: 28px;
}

.sidebar-group-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 20px 8px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 20px;
  font-size: 0.88rem;
  color: var(--text-2);
  border-radius: 0;
  transition: color 0.15s, background 0.15s;
  border-left: 2px solid transparent;
  margin-right: 1px;
}
.sidebar-link:hover {
  color: var(--text);
  background: var(--card);
}
.sidebar-link.active {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-dim);
  font-weight: 500;
}

/* ── Main content ───────────────────────────────────── */
.docs-content {
  padding: 48px 64px 96px;
  min-width: 0;
}

/* ── Breadcrumb ─────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-muted); transition: color 0.15s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { opacity: 0.4; }
.breadcrumb-current { color: var(--text-2); }

/* ── Page title ─────────────────────────────────────── */
.doc-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 12px;
}

.doc-lead {
  font-size: 1.05rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 680px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 32px;
}

/* ── Headings ───────────────────────────────────────── */
.docs-content h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  margin: 48px 0 16px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.docs-content h2:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.docs-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 32px 0 12px;
}
.docs-content h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  margin: 24px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-2);
}

/* ── Paragraphs and lists ───────────────────────────── */
.docs-content p {
  font-size: 0.93rem;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 16px;
}
.docs-content p strong { color: var(--text); }
.docs-content p code,
.docs-content li code {
  font-family: var(--mono);
  font-size: 0.83em;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(34, 211, 238, 0.1);
}

.docs-content ul, .docs-content ol {
  margin: 0 0 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.docs-content li {
  font-size: 0.93rem;
  color: var(--text-2);
  line-height: 1.7;
}
.docs-content ul li::marker { color: var(--primary); }

/* ── Code blocks ────────────────────────────────────── */
.doc-code {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 20px 0;
}

.doc-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.doc-code-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-2);
}
.doc-code-lang {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.doc-code pre {
  background: var(--card) !important;
  padding: 20px !important;
  overflow: auto;
  font-size: 0.8rem !important;
  line-height: 1.65 !important;
  margin: 0 !important;
  max-height: 600px;
}

.doc-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-2);
  z-index: 1;
  transition: background 0.15s, color 0.15s;
  cursor: pointer;
}
.doc-copy-btn:hover { background: var(--border); color: var(--text); }
.doc-copy-btn.copied { color: var(--green); border-color: var(--green); }

/* Inline code blocks (no header) */
.doc-code.bare pre { border-radius: var(--radius); }

/* ── Callout boxes ──────────────────────────────────── */
.callout {
  display: flex;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius);
  margin: 24px 0;
  font-size: 0.88rem;
  line-height: 1.65;
}
.callout-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.callout p { margin: 0; }
.callout p strong { display: block; margin-bottom: 4px; }
.callout-info { background: var(--primary-dim); border: 1px solid rgba(79,131,255,0.2); color: var(--text-2); }
.callout-info .callout-icon { color: var(--primary); }
.callout-success { background: var(--green-dim); border: 1px solid rgba(61,214,140,0.2); color: var(--text-2); }
.callout-success .callout-icon { color: var(--green); }
.callout-warning { background: rgba(251,191,36,0.08); border: 1px solid rgba(251,191,36,0.2); color: var(--text-2); }
.callout-warning .callout-icon { color: var(--yellow); }

/* ── File tree ──────────────────────────────────────── */
.doc-filetree {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 20px 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.8;
}
.ft-dir { color: var(--text-2); }
.ft-dir::before { content: '📁 '; }
.ft-file { color: var(--text-muted); padding-left: 20px; display: block; }
.ft-file::before { content: '📄 '; }
.ft-file.hl { color: var(--green); }
.ft-file.hl::before { content: '✨ '; }
.ft-count { color: var(--primary); font-style: italic; }

/* ── Tabs ───────────────────────────────────────────── */
.doc-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.doc-tab {
  padding: 9px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
  cursor: pointer;
}
.doc-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.doc-tab-content { display: none; }
.doc-tab-content.active { display: block; }
.doc-tabgroup {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 20px 0;
}
.doc-tabgroup .doc-tabs {
  background: var(--surface);
  padding: 0 16px;
  border-bottom-color: var(--border);
}
.doc-tabgroup .doc-tab-content pre {
  background: var(--card) !important;
  padding: 20px !important;
  font-size: 0.8rem !important;
  margin: 0 !important;
  overflow: auto;
}

/* ── Table ──────────────────────────────────────────── */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 20px 0;
}
.doc-table th {
  text-align: left;
  padding: 10px 14px;
  background: var(--surface);
  color: var(--text-2);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
.doc-table td {
  padding: 10px 14px;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.doc-table tr:last-child td { border-bottom: none; }
.doc-table td code {
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  padding: 1px 5px;
  border-radius: 3px;
}
.doc-table td strong { color: var(--text); font-weight: 600; }

/* ── Next/prev nav ──────────────────────────────────── */
.doc-nav-footer {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.doc-nav-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
  min-width: 180px;
}
.doc-nav-btn:hover { border-color: var(--primary); background: var(--primary-dim); }
.doc-nav-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.doc-nav-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}
.doc-nav-btn.next { text-align: right; margin-left: auto; }
.doc-nav-btn.prev { margin-right: auto; }

/* ── Schema highlight ───────────────────────────────── */
.schema-comment {
  color: #4d6380 !important;
  font-style: italic;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 1024px) {
  .docs-layout { grid-template-columns: 220px 1fr; }
  .docs-content { padding: 32px 32px 64px; }
}
@media (max-width: 768px) {
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { display: none; }
  .docs-content { padding: 24px 0 64px; }
}