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

:root {
  --bg: #0f1117;
  --surface: #161b22;
  --surface-alt: #1c2128;
  --border: #30363d;
  --text: #e8e8e4;
  --muted: #8b949e;
  --accent: #f59e0b;
  --mono: 'Courier New', Courier, monospace;
  --sidebar-width: 220px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 2rem;
  margin-left: var(--sidebar-width);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.logo-link {
  display: inline-block;
  margin-bottom: 0.6rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 1rem;
}

.logo-link:hover {
  text-decoration: underline;
}

.badge {
  display: inline-block;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  border-radius: 0.25rem;
  font-size: 0.72rem;
  font-family: var(--mono);
  margin-bottom: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h1 {
  font-size: 1.7rem;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.subtitle {
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.9rem;
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .sep {
  margin: 0 0.35rem;
  opacity: 0.45;
}

.breadcrumb .current {
  color: var(--text);
}

.page-layout {
  max-width: 980px;
  margin: 0 0 0 var(--sidebar-width);
  padding: 0 2rem;
  display: block;
}

.sidebar {
  width: var(--sidebar-width);
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 10;
  max-height: 100vh;
  overflow-y: auto;
  padding: 1rem 0.75rem 1.25rem;
  background: var(--surface);
  border-right: 1px solid var(--border);
}

.command-palette {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: var(--sidebar-width);
  z-index: 1200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1rem 1rem;
}

.command-palette[hidden] {
  display: none !important;
}

.command-palette-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(0, 0, 0, 0.55);
}

.command-palette-dialog {
  position: relative;
  width: min(760px, 100%);
  max-height: 76vh;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--surface);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
}

.command-palette-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}

.command-palette-input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.3rem;
  background: var(--bg);
  color: var(--text);
  font-size: 0.94rem;
}

.command-palette-input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.command-palette-hint {
  color: var(--muted);
  font-size: 0.72rem;
  font-family: var(--mono);
  white-space: nowrap;
}

.command-palette-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.command-palette-filters .chip {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.7rem;
  padding: 0.14rem 0.48rem;
  border-radius: 999px;
  cursor: pointer;
}

.command-palette-filters .chip.is-active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.command-palette-results {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--surface);
  overflow: hidden;
  overflow-y: auto;
}

.command-palette-results li a,
.command-palette-results li button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.6rem 0.75rem;
  text-decoration: none;
  border: 0;
  border-top: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
}

.command-palette-results li:first-child a,
.command-palette-results li:first-child button { border-top: 0; }

.command-palette-results li.active a,
.command-palette-results li.active button,
.command-palette-results li a:hover,
.command-palette-results li button:hover {
  background: var(--surface);
}

.command-palette-results .title {
  display: block;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.25;
}

.command-palette-results .title mark {
  background: transparent;
  color: var(--accent);
  padding: 0;
}

.command-palette-results .meta {
  display: inline-block;
  width: fit-content;
  color: var(--muted);
  font-size: 0.66rem;
  margin-top: 0.2rem;
  padding: 0.06rem 0.42rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 1px solid var(--border);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.command-palette-results .path {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 0.1rem;
  font-family: var(--mono);
  opacity: 0.9;
}

.command-palette-results .snippet {
  display: block;
  color: var(--text);
  font-size: 0.78rem;
  margin-top: 0.22rem;
  line-height: 1.35;
  opacity: 0.95;
}

.command-palette-results .snippet mark {
  background: transparent;
  color: var(--accent);
  padding: 0 0.08rem;
  border-radius: 0.12rem;
}

.command-palette-results .empty {
  color: var(--muted);
  padding: 0.7rem 0.75rem;
  font-size: 0.85rem;
}

.sidebar-search {
  margin: 0 0 0.9rem;
  padding: 0 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-search-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.sidebar-search-input {
  width: 100%;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  background: var(--bg);
  color: var(--text);
  font-size: 0.82rem;
}

.sidebar-search-input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.sidebar-search-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.5rem;
}

.sidebar-search-filters .chip {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  font-size: 0.66rem;
  padding: 0.12rem 0.4rem;
  border-radius: 999px;
  cursor: pointer;
}

.sidebar-search-filters .chip.is-active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.sidebar-search-results {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  background: var(--surface-alt);
  overflow: hidden;
}

.sidebar-search-results li a {
  display: block;
  padding: 0.45rem 0.55rem;
  text-decoration: none;
  border-top: 1px solid var(--border);
}

.sidebar-search-results li button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.45rem 0.55rem;
  text-decoration: none;
  border: 0;
  border-top: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
}

.sidebar-search-results li:first-child a { border-top: 0; }
.sidebar-search-results li:first-child button { border-top: 0; }

.sidebar-search-results li.active a,
.sidebar-search-results li.active button,
.sidebar-search-results li a:hover,
.sidebar-search-results li button:hover {
  background: var(--surface);
}

.sidebar-search-results .title {
  display: block;
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.25;
}

.sidebar-search-results .meta {
  display: inline-block;
  width: fit-content;
  color: var(--muted);
  font-size: 0.64rem;
  margin-top: 0.18rem;
  padding: 0.05rem 0.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 1px solid var(--border);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sidebar-search-results .path {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
  margin-top: 0.1rem;
  font-family: var(--mono);
  opacity: 0.9;
}

.sidebar-search-results .snippet {
  display: block;
  color: var(--text);
  font-size: 0.72rem;
  margin-top: 0.22rem;
  line-height: 1.35;
  opacity: 0.95;
}

.sidebar-search-results .snippet mark {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--text);
  padding: 0 0.08rem;
  border-radius: 0.12rem;
}

.sidebar-search-results .empty {
  color: var(--muted);
  padding: 0.45rem 0.55rem;
  font-size: 0.8rem;
}

.tree { list-style: none; margin: 0; padding: 0; }
.tree-children { list-style: none; margin: 0; padding-left: 0.75rem; }

.tree-link {
  display: block;
  padding: 0.3rem 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.4;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s;
}
.tree-link:hover { color: var(--text); text-decoration: none; }
.tree-link.active { color: var(--accent); border-left-color: var(--accent); }

.tree > .tree-group > .tree-link {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 600;
  padding-top: 1rem;
  padding-bottom: 0.1rem;
}
.tree > .tree-group:first-child > .tree-link { padding-top: 0.3rem; }

main {
  min-width: 0;
  padding: 2rem 0;
}

h2 {
  margin-top: 1.8rem;
  margin-bottom: 0.9rem;
  color: var(--accent);
  font-size: 1.2rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

ul {
  margin: 0.8rem 0 1rem 1.4rem;
}

li {
  margin-bottom: 0.45rem;
  color: var(--text);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.25rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-alt);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.85rem;
}

tbody tr:nth-child(even) {
  background: #12161d;
}

code {
  font-family: var(--mono);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 0.2rem;
  padding: 0.05rem 0.3rem;
}

pre {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

.meta {
  background: var(--surface-alt);
  border-left: 3px solid var(--accent);
  padding: 1rem;
  border-radius: 0.25rem;
  margin-bottom: 1.5rem;
}

.meta p {
  margin: 0.3rem 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1.2rem;
  margin-top: 2rem;
}

.nav a {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.25rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.85rem;
  background: var(--surface-alt);
}

.nav a:hover {
  background: var(--accent);
  color: var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

#back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1000;
  border: 1px solid var(--accent);
  background: var(--surface-alt);
  color: var(--accent);
  padding: 0.5rem 0.8rem;
  border-radius: 0.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: translateY(6px);
}

#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#back-to-top:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .command-palette { left: 0; }
  header { margin-left: 0; }
  .page-layout { margin-left: 0; padding: 0 1rem; }
  .sidebar { display: none; }
  main { padding: 1.5rem 0; }
}

@media (max-width: 600px) {
  main { padding: 1rem 0; }
  .nav { flex-wrap: wrap; }
}