:root {
  --bg-main: #0b0f1c;
  --bg-panel: #12172a;
  --bg-panel-alt: #141a30;
  --text-main: #e6e8f1;
  --text-muted: #9aa3c7;
  --accent: #2bd4a7;
  --border: #232b4a;
}

/* ===== GLOBAL ===== */
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
}

.layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
}

.sidebar-header h2 {
  color: var(--accent);
}

.sidebar input {
  width: 100%;
  margin-top: 12px;
  padding: 8px;
  border-radius: 6px;
  background: #080c18;
  border: 1px solid var(--border);
  color: var(--text-main);
}

/* ===== CHAPTERS ===== */
.chapter-title {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 16px;
}

.chapter-docs {
  margin-left: 18px;
}

.chapter.collapsed .chapter-docs {
  display: none;
}

.chevron {
  transition: transform 0.2s;
}

.chapter.collapsed .chevron {
  transform: rotate(-90deg);
}

/* ===== DOC LINKS ===== */
.doc-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
}

.doc-link:hover {
  background: rgba(43,212,167,0.12);
  color: var(--accent);
}

.doc-link.active {
  background: rgba(43,212,167,0.18);
  color: var(--accent);
}

/* ===== CONTENT ===== */
.content {
  padding: 32px;
}

.doc-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 32px;
}

.doc-content p {
  color: var(--text-main);
}

.content-search {
  width: 100%;
  padding: 8px;
  margin-bottom: 20px;
  border-radius: 6px;
  background: #080c18;
  border: 1px solid var(--border);
  color: var(--text-main);
}

/* ===== TOC ===== */
.toc {
  position: sticky;
  top: 20px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.toc-title {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.toc a {
  display: block;
  font-size: 13px;
  color: var(--text-main);
  text-decoration: none;
  margin-bottom: 6px;
}

.toc a:hover {
  color: var(--accent);
}
.doc-link .lock {
  color: #ff4d4d;
  margin-right: 6px;
  font-size: 0.9em;
}