:root {
  --bg: #0f1115;
  --panel: #151821;
  --panel-soft: #1b1f2b;
  --border: #23283a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #5865F2;
  --radius: 14px;
}

body.light {
  --bg: #ffffff;
  --panel: #ffffff;
  --panel-soft: #f3f4f6;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.layout {
  display: grid;
  grid-template-columns: 280px 1fr 260px;
  height: 100vh;
}

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

.brand {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.theme-btn {
  width: 100%;
  margin-bottom: 10px;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-soft);
  color: var(--text);
  cursor: pointer;
}

#search {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-soft);
  color: var(--text);
  margin-bottom: 20px;
}

.group-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 20px 0 8px;
}

.sidebar a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}

.sidebar a:hover {
  background: var(--panel-soft);
  color: var(--text);
}

.sidebar a.active {
  background: rgba(88,101,242,0.15);
  color: var(--accent);
  font-weight: 600;
}

/* Content */
.content {
  padding: 48px;
  overflow-y: auto;
}

.content h1 { font-size: 32px; margin-bottom: 10px; }
.content h2 { font-size: 22px; margin-top: 40px; margin-bottom: 10px; }
.content p { color: var(--muted); line-height: 1.7; margin-bottom: 14px; }

/* Command */
.command {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 20px 0;
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
}

.copy-btn:hover { color: var(--text); }

/* Badges */
.badges {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge {
  background: rgba(88,101,242,0.15);
  color: #8ea1ff;
  border: 1px solid rgba(88,101,242,0.35);
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

/* TOC */
.toc {
  background: var(--panel);
  border-left: 1px solid var(--border);
  padding: 24px;
  overflow-y: auto;
}

.toc-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 10px;
}

.toc a {
  display: block;
  padding: 6px 8px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}

.toc a.active {
  color: var(--accent);
  font-weight: 600;
}

/* Pager */
.pager {
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
}

.pager button {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
}

/* CTA */
.cta {
  background: var(--accent);
  color: white;
  padding: 12px 18px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

.cta.secondary {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

/* Mobile */
.menu-toggle { display: none; margin-bottom: 15px; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }

  .sidebar {
    position: fixed;
    left: -100%;
    top: 0;
    height: 100%;
    width: 260px;
    z-index: 100;
    transition: 0.25s;
  }

  .sidebar.open { left: 0; }
  .toc { display: none; }
  .menu-toggle { display: inline-block; }
}