/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-w: 280px;
  --sidebar-bg: #161b22;
  --sidebar-border: #30363d;
  --sidebar-item-hover: #21262d;
  --sidebar-active: #1f6feb22;
  --sidebar-active-border: #1f6feb;
  --accent: #3b82f6;
  --accent-dark: #1f6feb;
  --text-primary: #e6edf3;
  --text-muted: #7d8590;
  --content-bg: #f6f8fa;
  --content-text: #1f2937;
  --border: #d0d7de;
  --card-bg: #ffffff;
  --badge-custom: #7c3aed;
  --badge-extra: #0284c7;
  --badge-core: #059669;
  --badge-c4: #d97706;
  --badge-meta: #6b7280;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

html { font-size: 15px; }
body { font-family: var(--font); background: var(--content-bg); color: var(--content-text); overflow-x: hidden; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow: hidden;
}

.sidebar-header {
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.user-name {
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.btn-logout {
  font-size: 16px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color .15s;
}
.btn-logout:hover { color: #f85149; text-decoration: none; }

/* ─── Search ────────────────────────────────────────────────────────────────── */
.search-wrap {
  padding: 10px 12px;
  border-bottom: 1px solid var(--sidebar-border);
  position: relative;
  flex-shrink: 0;
}
.search-input {
  width: 100%;
  background: #21262d;
  border: 1px solid var(--sidebar-border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: border-color .15s;
}
.search-input::placeholder { color: #484f58; }
.search-input:focus { border-color: var(--accent); }

.search-dropdown {
  position: absolute;
  top: calc(100% - 10px);
  left: 12px;
  right: 12px;
  background: #1c2128;
  border: 1px solid var(--sidebar-border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
  z-index: 100;
  overflow: hidden;
}
.search-result-item {
  display: block;
  padding: 9px 12px;
  border-bottom: 1px solid var(--sidebar-border);
  color: var(--text-primary);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--sidebar-item-hover); text-decoration: none; }
.search-result-item strong { display: block; font-size: 13px; margin-bottom: 2px; }
.search-snippet { font-size: 11px; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ─── Nav groups ────────────────────────────────────────────────────────────── */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0 16px;
  scrollbar-width: thin;
  scrollbar-color: #30363d transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: #30363d; border-radius: 4px; }

.nav-group { border-bottom: 1px solid var(--sidebar-border); }
.nav-group-header {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
  transition: color .15s;
}
.nav-group-header:hover { color: var(--text-primary); }
.nav-group-label { flex: 1; text-align: left; }
.nav-count {
  background: #21262d;
  color: var(--text-muted);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
}
.chevron { font-size: 12px; transition: transform .2s; }
.nav-group.collapsed .chevron { transform: rotate(-90deg); }
.nav-group-items { overflow: hidden; }
.nav-group.collapsed .nav-group-items { display: none; }

.nav-item {
  display: block;
  padding: 5px 12px 5px 28px;
  font-size: 13px;
  color: #8b949e;
  border-left: 2px solid transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .15s, background .15s, border-color .15s;
}
.nav-item:hover { color: var(--text-primary); background: var(--sidebar-item-hover); text-decoration: none; }
.nav-item.active {
  color: #58a6ff;
  background: var(--sidebar-active);
  border-left-color: var(--sidebar-active-border);
  font-weight: 500;
}

/* ─── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  flex-shrink: 0;
}
.badge-custom { background: var(--badge-custom); color: #fff; }
.badge-extra  { background: var(--badge-extra);  color: #fff; }
.badge-core   { background: var(--badge-core);   color: #fff; }
.badge-c4     { background: var(--badge-c4);     color: #fff; }
.badge-meta   { background: var(--badge-meta);   color: #fff; }

/* Inline badges inside markdown content */
.markdown-body .badge-installed   { background: #1a7f37; color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }
.markdown-body .badge-not-installed{ background: #57606a; color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600; }

/* ─── Content area ──────────────────────────────────────────────────────────── */
.content {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: hidden;
}

/* ─── Breadcrumb ────────────────────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 32px;
  font-size: 12px;
  color: #57606a;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  flex-shrink: 0;
}
.bc-home { color: var(--accent); }
.bc-sep  { color: #8c959f; }
.bc-current { color: var(--content-text); font-weight: 500; }
.bc-part { color: #57606a; }

/* ─── Markdown body ─────────────────────────────────────────────────────────── */
.markdown-body {
  flex: 1;
  padding: 32px 40px 48px;
  max-width: 960px;
  width: 100%;
  line-height: 1.65;
  color: var(--content-text);
}

.markdown-body h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #0d1117;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 20px;
}
.markdown-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #0d1117;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin: 32px 0 12px;
}
.markdown-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1f2937;
  margin: 24px 0 8px;
}
.markdown-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #374151;
  margin: 16px 0 6px;
}
.markdown-body p { margin: 0 0 14px; }
.markdown-body ul, .markdown-body ol { margin: 0 0 14px 22px; }
.markdown-body li { margin-bottom: 4px; }
.markdown-body blockquote {
  border-left: 4px solid var(--accent);
  margin: 16px 0;
  padding: 8px 16px;
  color: #57606a;
  background: #f0f7ff;
  border-radius: 0 4px 4px 0;
}
.markdown-body strong { color: #0d1117; }
.markdown-body hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

/* Tables */
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 14px;
}
.markdown-body th {
  background: #f0f4f8;
  font-weight: 600;
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border);
  color: #374151;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.markdown-body td {
  padding: 8px 12px;
  border: 1px solid var(--border);
  vertical-align: top;
}
.markdown-body tr:nth-child(even) td { background: #fafbfc; }

/* Inline code */
.markdown-body code {
  background: #f0f1f3;
  border: 1px solid #e1e4e8;
  border-radius: 4px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 87%;
  color: #e83e8c;
}

/* Code blocks */
.markdown-body pre {
  background: #161b22;
  border-radius: 8px;
  overflow: auto;
  margin: 16px 0;
}
.markdown-body pre code {
  background: none;
  border: none;
  padding: 16px;
  display: block;
  font-size: 13.5px;
  color: #e6edf3;
  line-height: 1.55;
}

/* Mermaid diagrams */
.markdown-body .mermaid {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin: 16px 0;
  text-align: center;
  overflow-x: auto;
}

/* ─── Doc footer ────────────────────────────────────────────────────────────── */
.doc-footer {
  padding: 12px 40px;
  border-top: 1px solid var(--border);
  background: var(--card-bg);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #8c959f;
  flex-shrink: 0;
}
.footer-path { font-family: var(--font-mono); }

/* ─── Login ─────────────────────────────────────────────────────────────────── */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
}
.login-card {
  width: min(420px, 92vw);
  background: #1c2128;
  border: 1px solid var(--sidebar-border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}
.login-card h1 {
  color: var(--text-primary);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.login-card .subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 24px;
}
.login-card label {
  display: block;
  color: #8b949e;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 5px;
}
.login-card input[type=text],
.login-card input[type=password] {
  width: 100%;
  background: #21262d;
  border: 1px solid var(--sidebar-border);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  margin-bottom: 16px;
  transition: border-color .15s;
}
.login-card input:focus { border-color: var(--accent); }
.login-card button {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.login-card button:hover { background: var(--accent-dark); }
.login-error {
  background: #3d1515;
  border: 1px solid #8b1a1a;
  color: #f97171;
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 13px;
  margin-bottom: 16px;
}
.login-footer {
  margin-top: 20px;
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

.login-form {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.login-form input {
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 10px;
}

.login-form button {
  margin-top: 8px;
  border: none;
  border-radius: 8px;
  background: #1d4ed8;
  color: #fff;
  padding: 10px;
  cursor: pointer;
}

.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 8px;
  margin: 10px 0;
}

.hint {
  color: #475569;
  font-size: 14px;
}

.files-wrap {
  max-width: 980px;
  margin: 20px auto;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
}