:root {
  --bg: #ffffff;
  --bg-alt: #f4f5f6;
  --tx: #000000;
  --tx-muted: #555555;
  --border: #bbbbbb;
  --accent: #0000ee;
  --code-bg: #f8f8f8;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-alt: #1a1a1a;
  --tx: #dddddd;
  --tx-muted: #999999;
  --border: #444444;
  --accent: #55aaff;
  --code-bg: #111111;
}

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

html {
  scrollbar-gutter: stable;
  overflow-y: scroll;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--tx);
  line-height: 1.5;
  font-size: 16px;
}

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

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  position: relative;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  padding: 0.5rem 1rem;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.brand {
  font-weight: bold;
  font-size: 1.2rem;
  color: var(--tx);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  background: var(--tx);
  color: var(--bg);
  padding: 0 0.3rem;
  font-family: var(--font-mono);
}

.brand-tag {
  font-size: 0.8rem;
  color: var(--tx-muted);
  border: 1px solid var(--border);
  padding: 0 0.3rem;
}

.header-nav {
  display: flex;
  gap: 1rem;
}

.header-nav a {
  color: var(--tx);
}

.header-nav a.is-active {
  font-weight: bold;
  text-decoration: underline;
}

.header-tools {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

button, .icon-btn {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--tx);
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

button:hover, .icon-btn:hover {
  background: var(--border);
}

.mobile-menu-checkbox { position: absolute; opacity: 0; pointer-events: none; }
.nav-toggle { display: none; cursor: pointer; }

.search-trigger kbd {
  font-family: var(--font-mono);
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 0 0.2rem;
}

.icon {
  width: 1rem;
  height: 1rem;
}

[data-theme="dark"] .on-dark { display: block; }
[data-theme="dark"] .on-light { display: none; }
[data-theme="light"] .on-dark { display: none; }
[data-theme="light"] .on-light { display: block; }

/* Docs Shell */
.docs-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 200px;
  max-width: 1400px;
  margin: 0 auto;
  align-items: start;
}

/* Sidebar */
.docs-sidebar {
  border-right: 1px solid var(--border);
  padding: 2rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.nav-group {
  margin-bottom: 1.5rem;
}

.nav-group-title {
  font-weight: bold;
  font-size: 0.9rem;
  color: var(--tx-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.sidebar-nav ul {
  list-style: none;
}

.sidebar-nav li {
  margin-bottom: 0.25rem;
}

.sidebar-nav a {
  color: var(--tx);
  font-size: 0.95rem;
}

.sidebar-nav a.is-active {
  font-weight: bold;
}

.nav-sub {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.nav-sub-title {
  font-weight: bold;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.nav-sub ul {
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}

/* Main Content */
.docs-main {
  padding: 2rem 3rem;
  min-height: 100vh;
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--tx-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs a {
  color: var(--tx-muted);
}

.prose h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.prose .lead { font-size: 1.1rem; color: var(--tx-muted); margin-bottom: 2rem; }
.prose h2 { font-size: 1.5rem; margin-top: 2rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); padding-bottom: 0.2rem; }
.prose h3 { font-size: 1.25rem; margin-top: 1.5rem; margin-bottom: 0.5rem; }
.prose p { margin-bottom: 1rem; }
.prose ul, .prose ol { margin-bottom: 1rem; padding-left: 2rem; }
.prose code {
  font-family: var(--font-mono);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 0 0.2rem;
  font-size: 0.9em;
}

.prose pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}

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

.prose blockquote {
  border-left: 4px solid var(--border);
  padding-left: 1rem;
  margin-bottom: 1rem;
  color: var(--tx-muted);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}
.prose th, .prose td {
  border: 1px solid var(--border);
  padding: 0.5rem;
  text-align: left;
}
.prose th { background: var(--bg-alt); font-weight: bold; }

/* Asides (Utilitarian) */
.aside {
  border: 1px solid var(--border);
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--bg-alt);
}
.aside-note { border-left: 4px solid var(--accent); }
.aside-tip { border-left: 4px solid #107c10; }
.aside-caution { border-left: 4px solid #d97706; }
.aside-danger { border-left: 4px solid #cc0000; }
.aside-head {
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.aside-body > *:last-child { margin-bottom: 0; }

/* Prev/Next */
.prev-next {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.pn {
  border: 1px solid var(--border);
  padding: 1rem;
  width: 48%;
  display: block;
}
.pn:hover { background: var(--bg-alt); text-decoration: none; }
.pn-label { display: block; font-size: 0.8rem; color: var(--tx-muted); }
.pn-title { display: block; font-weight: bold; color: var(--tx); }
.page-foot { margin-top: 2rem; font-size: 0.85rem; }

/* TOC */
.docs-toc {
  padding: 2rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  font-size: 0.85rem;
}
.toc-title { font-weight: bold; margin-bottom: 0.5rem; text-transform: uppercase; }
.toc ul { list-style: none; padding-left: 1rem; border-left: 1px solid var(--border); }
.toc > ul { padding-left: 0; border-left: none; }
.toc a { color: var(--tx-muted); }
.toc a:hover, .toc a.is-active { color: var(--tx); font-weight: bold; }

/* Home / Hero */
.home-hero {
  text-align: center;
  padding: 4rem 1rem;
  border-bottom: 1px solid var(--border);
}
.home-hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.home-hero p.lead { font-size: 1.2rem; color: var(--tx-muted); margin-bottom: 2rem; }
.install-box {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  margin-bottom: 2rem;
}
.code-window {
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
  border: 1px solid var(--border);
}
.code-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 0.25rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--tx-muted);
}
.code-window pre { margin: 0; border: none; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 4rem 1rem;
  max-width: 1000px;
  margin: 0 auto;
}
.feature h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }

/* Tabs — labels and panels are flat siblings (one shortcode call each), so
   grouping into a label row is done with flex-wrap + order, not a wrapper
   element around each half. nth-of-type on .tab-panel counts divs, since
   input/label aren't divs, so it still lines up with the matching radio. */
.tabs-widget { display: flex; flex-wrap: wrap; border: 1px solid var(--border); margin-bottom: 1rem; background: var(--bg-alt); }
.tab-label { padding: 0.5rem 1rem; cursor: pointer; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.tab-radio { display: none; }
.tab-radio:checked + .tab-label { background: var(--bg); font-weight: bold; border-bottom-color: var(--bg); }
.tab-panel { display: none; order: 99; width: 100%; padding: 1rem; background: var(--bg); }
.tab-radio:nth-of-type(1):checked ~ .tab-panel:nth-of-type(1),
.tab-radio:nth-of-type(2):checked ~ .tab-panel:nth-of-type(2),
.tab-radio:nth-of-type(3):checked ~ .tab-panel:nth-of-type(3),
.tab-radio:nth-of-type(4):checked ~ .tab-panel:nth-of-type(4),
.tab-radio:nth-of-type(5):checked ~ .tab-panel:nth-of-type(5),
.tab-radio:nth-of-type(6):checked ~ .tab-panel:nth-of-type(6),
.tab-radio:nth-of-type(7):checked ~ .tab-panel:nth-of-type(7),
.tab-radio:nth-of-type(8):checked ~ .tab-panel:nth-of-type(8) { display: block; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 1rem; background: var(--bg-alt); font-size: 0.9rem; }
.footer-grid { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
.footer-col h4 { margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-bot { max-width: 1400px; margin: 2rem auto 0; padding-top: 1rem; border-top: 1px solid var(--border); color: var(--tx-muted); font-size: 0.8rem; }

/* Compat Report */
.compat { border: 1px solid var(--border); margin: 1.5rem 0; }
.compat-head { display: flex; justify-content: space-between; margin-bottom: 0; border-bottom: 1px solid var(--border); padding: 1rem; background: var(--bg-alt); }
.compat-rate { font-size: 2rem; font-weight: bold; }
.compat-sub { color: var(--tx-muted); font-size: 0.9rem; }
.compat-meta { color: var(--tx-muted); font-size: 0.8rem; text-align: right; line-height: 1.6; }
.compat-table { margin-bottom: 0; }
.compat-table .num { text-align: right; }
.compat-table .muted { color: var(--tx-muted); font-size: 0.85rem; }
.bar-cell { width: 140px; white-space: nowrap; }
.bar { display: inline-block; width: 70px; height: 8px; background: var(--bg-alt); border: 1px solid var(--border); vertical-align: middle; margin-right: 0.5rem; }
.bar-fill { display: block; height: 100%; background: var(--tx); }
.bar-ok { background: #107c10; }
.bar-good { background: var(--accent); }
.bar-warn { background: #d97706; }
.bar-bad { background: #cc0000; }
[data-theme="dark"] .bar-ok { background: #4caf50; }
[data-theme="dark"] .bar-warn { background: #e5a13a; }
[data-theme="dark"] .bar-bad { background: #f4667a; }
.bar-label { font-size: 0.85rem; color: var(--tx-muted); }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.card { display: block; border: 1px solid var(--border); padding: 1rem; background: var(--bg); color: var(--tx); }
.card-icon { display: block; margin-bottom: 0.5rem; }
.card-title { display: flex; align-items: center; justify-content: space-between; font-weight: bold; margin-bottom: 0.4rem; gap: 0.5rem; }
.card-body { color: var(--tx-muted); font-size: 0.95rem; }
.card-body > *:last-child { margin-bottom: 0; }
.link-card:hover { background: var(--bg-alt); text-decoration: none; }

/* Steps */
.steps ol { list-style: none; padding-left: 0; counter-reset: step; margin-bottom: 1rem; }
.steps ol > li { counter-increment: step; position: relative; padding-left: 2.5rem; margin-bottom: 1.25rem; }
.steps ol > li::before {
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 1.6rem; height: 1.6rem;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: bold;
}

/* Wrap / section utility (used by 404 and blog pages) */
.wrap { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 3rem 0; }
.prose.narrow { max-width: 700px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; border: 1px solid var(--border); padding: 0.5rem 1rem; background: var(--bg-alt); color: var(--tx); cursor: pointer; }
.btn:hover { background: var(--border); text-decoration: none; }
.btn-primary { background: var(--tx); color: var(--bg); border-color: var(--tx); }
.btn-primary:hover { opacity: 0.85; }

/* 404 */
.notfound { text-align: center; padding: 5rem 0; }
.nf-code { font-size: 4rem; font-weight: bold; color: var(--tx-muted); margin-bottom: 0.5rem; }
.notfound h1 { margin-bottom: 0.75rem; }
.notfound p { color: var(--tx-muted); margin-bottom: 1.5rem; }

/* Blog */
.post-list { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1.5rem; }
.post-item { display: block; border: 1px solid transparent; padding: 1rem; }
.post-item:hover { border-color: var(--border); background: var(--bg-alt); text-decoration: none; }
.post-item time { font-size: 0.8rem; color: var(--tx-muted); }
.post-item h2 { font-size: 1.2rem; margin: 0.25rem 0; }
.post-item p { color: var(--tx-muted); font-size: 0.95rem; }
.post-date { color: var(--tx-muted); margin-bottom: 1.5rem; }

/* Copy button (code blocks) */
.highlight { position: relative; margin-bottom: 1rem; }
.highlight pre { margin-bottom: 0; }
.copy-btn { position: absolute; top: 0.4rem; right: 0.4rem; opacity: 0; }
.highlight:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
.copy-btn.copied { color: #107c10; border-color: #107c10; }

/* Search Modal */
.search-modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; justify-content: center; padding-top: 10vh; z-index: 100; }
.search-modal[hidden] { display: none; }
.search-panel { background: var(--bg); border: 1px solid var(--border); width: 100%; max-width: 600px; max-height: 70vh; display: flex; flex-direction: column; }
.search-input-row { display: flex; align-items: center; padding: 0.5rem 1rem; border-bottom: 1px solid var(--border); gap: 0.5rem; }
.search-input-row input { flex: 1; border: none; background: none; color: var(--tx); font-size: 1rem; padding: 0.5rem; outline: none; }
.search-results { max-height: 400px; overflow-y: auto; }
.sr { display: block; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); color: var(--tx); }
.sr:hover, .sr.is-sel { background: var(--bg-alt); text-decoration: none; }
.sr-sec { font-size: 0.75rem; text-transform: uppercase; color: var(--tx-muted); }
.sr-title { font-weight: bold; margin: 0.15rem 0; }
.sr-desc { font-size: 0.85rem; color: var(--tx-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sr-empty { padding: 1.5rem; text-align: center; color: var(--tx-muted); }
.sr mark { background: none; color: var(--accent); font-weight: bold; }

/* Docs toolbar (breadcrumbs + mobile sections button) */
.docs-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.docs-toolbar .breadcrumbs { margin-bottom: 0; }
.docs-toolbar-end { justify-content: flex-end; }
.docs-menu-toggle {
  display: none;
  align-items: center; gap: 0.4rem;
  background: var(--bg-alt); border: 1px solid var(--border); color: var(--tx);
  padding: 0.35rem 0.7rem; font-size: 0.85rem; cursor: pointer;
}

/* Mobile-only / desktop-only utilities */
.mobile-only-link { display: none; }
.menu-icon-close { display: none; }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .header-nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1rem 1rem;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
  }
  .header-nav a { padding: 0.6rem 0.25rem; border-bottom: 1px solid var(--bg-alt); }
  .mobile-menu-checkbox:checked ~ .header-inner .header-nav { display: flex; }
  .mobile-menu-checkbox:checked ~ .header-inner .menu-icon-open { display: none; }
  .mobile-menu-checkbox:checked ~ .header-inner .menu-icon-close { display: block; }
  .mobile-only-link { display: block; }
  .desktop-only { display: none; }
  .nav-toggle { display: inline-flex; }
  .search-trigger span, .search-trigger kbd { display: none; }
  .search-trigger { min-width: 0; }
  .brand-tag { display: none; }

  .docs-menu-toggle { display: inline-flex; }
  .docs-shell { display: block; max-width: 100%; }
  .docs-sidebar {
    display: none;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 85%; max-width: 320px;
    height: 100vh;
    z-index: 90;
    background: var(--bg);
    box-shadow: 4px 0 16px rgba(0,0,0,0.2);
  }
  .docs-sidebar.is-open { display: block; }
  .docs-main { padding: 1.5rem 1rem; }
  .docs-toc { display: none; }

  .home-hero { padding: 2.5rem 1rem; }
  .home-hero h1 { font-size: 1.75rem; }
  .home-hero p.lead { font-size: 1rem; }
  .code-window { max-width: 100%; }
  .code-window pre, .prose pre { overflow-x: auto; max-width: 100%; }
  .features-grid { grid-template-columns: 1fr; padding: 2.5rem 1rem; gap: 1.5rem; }

  .stats-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { gap: 1.5rem; }

  .prev-next { flex-direction: column; }
  .pn { width: 100%; }

  table.compat-table { display: block; overflow-x: auto; white-space: nowrap; }
}

@media (max-width: 520px) {
  .stats-grid, .footer-grid { grid-template-columns: 1fr; }
}