/* ═══════════════════════════════════════════════════════════════════════════
   ZeroDocs, application stylesheet
   Theme variables come first; docs.config.json overrides are injected by the
   shell (style#theme-vars) after this file, so config always wins.
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
  --bg: #fff;          --bg2: #f8f9fa;      --sidebar: #f3f4f6;
  --border: #e5e7eb;   --hover: #f0f4ff;
  --text: #111827;     --muted: #6b7280;
  --link: #2563eb;     --act-bg: #2563eb;   --act-fg: #fff;
  --sep: #6b7280;      --code-bg: #f6f8fa;  --code-border: #e5e7eb;
  --ci-bg: #eff6ff; --ci-b: #3b82f6;
  --cw-bg: #fffbeb; --cw-b: #f59e0b;
  --cd-bg: #fef2f2; --cd-b: #ef4444;
  --ct-bg: #f0fdf4; --ct-b: #22c55e;
  /* highlighter tokens (light) */
  --tk-cmt: #6a737d; --tk-str: #0a7a3d; --tk-num: #b25e09; --tk-kw: #cf222e;
  --tk-lit: #0550ae; --tk-fn: #8250df;  --tk-type: #953800; --tk-prop: #0550ae;
  --tk-tag: #116329; --tk-attr: #0550ae; --tk-var: #953800; --tk-meta: #8250df;
  --tk-ins: #1a7f37; --tk-ins-bg: #e6ffec; --tk-del: #cf222e; --tk-del-bg: #ffebe9;
  --tk-sec: #8250df;
}
html.dark {
  --bg: #0f1117;       --bg2: #161b22;      --sidebar: #1e2028;
  --border: #2d333b;   --hover: #1a2040;
  --text: #cdd5df;     --muted: #7d8590;
  --link: #7db8f7;     --act-bg: #2a5ca8;   --act-fg: #dde8fc;
  --sep: #8b949e;      --code-bg: #161b22;  --code-border: #2d333b;
  --ci-bg: rgba(59,130,246,.12);  --ci-b: #3b82f6;
  --cw-bg: rgba(245,158,11,.12);  --cw-b: #f59e0b;
  --cd-bg: rgba(239,68,68,.12);   --cd-b: #ef4444;
  --ct-bg: rgba(34,197,94,.12);   --ct-b: #22c55e;
  --tk-cmt: #8b949e; --tk-str: #7ee787; --tk-num: #f2cc60; --tk-kw: #ff7b72;
  --tk-lit: #79c0ff; --tk-fn: #d2a8ff;  --tk-type: #ffa657; --tk-prop: #79c0ff;
  --tk-tag: #7ee787; --tk-attr: #79c0ff; --tk-var: #ffa657; --tk-meta: #d2a8ff;
  --tk-ins: #aff5b4; --tk-ins-bg: rgba(46,160,67,.15); --tk-del: #ffdcd7; --tk-del-bg: rgba(248,81,73,.15);
  --tk-sec: #d2a8ff;
}

/* ── Base ────────────────────────────────────────────────────────────────── */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; color: inherit; }
::selection { background: color-mix(in srgb, var(--link) 25%, transparent); }

:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
.skip-link {
  position: absolute; left: 8px; top: -48px; z-index: 300;
  padding: 8px 14px; background: var(--act-bg); color: var(--act-fg);
  border-radius: 6px; font-size: .85rem; transition: top .15s;
}
.skip-link:focus { top: 8px; text-decoration: none; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
#wrap { display: flex; flex-direction: column; min-height: 100vh; }
header {
  position: sticky; top: 0; z-index: 100; height: 56px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; height: 100%; width: 100%;
  max-width: 1515px; margin: 0 auto; padding: 0 16px; gap: 10px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); white-space: nowrap; }
.logo:hover { text-decoration: none; }
.logo-icon {
  width: 30px; height: 30px; background: var(--act-bg); border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  color: var(--act-fg); font-weight: 800; font-size: 13px; flex-shrink: 0;
}
.logo-img { width: 30px; height: 30px; border-radius: 7px; object-fit: contain; flex-shrink: 0; }
.top-nav { display: flex; gap: 18px; margin-left: 4px; }
.top-nav a { font-size: .875rem; color: var(--muted); white-space: nowrap; }
.top-nav a:hover { color: var(--link); text-decoration: none; }
.hright { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.search-pill {
  display: flex; align-items: center; gap: 6px; padding: 5px 10px;
  border: 1px solid var(--border); border-radius: 6px; background: var(--bg2);
  color: var(--muted); font-size: .8rem; cursor: pointer; white-space: nowrap;
  transition: border-color .15s, color .15s;
}
.search-pill:hover { border-color: var(--link); color: var(--text); }
.search-pill kbd { font-size: .7rem; padding: 1px 4px; border: 1px solid var(--border); border-radius: 3px; background: var(--bg); }
.ibtn {
  padding: 5px; border: none; background: transparent; cursor: pointer;
  color: var(--muted); border-radius: 6px; display: flex; align-items: center;
}
.ibtn:hover { background: var(--bg2); color: var(--text); }
.ver-sel {
  padding: 4px 8px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg2); color: var(--text); font-size: .8rem; cursor: pointer;
}
.ver-sel:hover { border-color: var(--link); }
#hbg { display: none; }

.body { display: flex; flex: 1; min-height: 0; max-width: 1515px; width: 100%; margin: 0 auto; }

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
#sidebar {
  width: 286px; flex-shrink: 0; background: var(--sidebar);
  border-right: 1px solid var(--border); overflow-y: auto;
  position: sticky; top: 56px; height: calc(100vh - 56px);
  scrollbar-width: thin;
}
#sidebar nav { padding: 10px 0 32px; }
.sep { padding: 18px 14px 4px; font-size: .875rem; font-weight: 700; color: var(--text); }
.ni {
  display: flex; align-items: center; padding: 5px 14px; font-size: .875rem;
  color: var(--muted); cursor: pointer; gap: 5px; text-decoration: none;
  border: none; background: none; width: 100%; text-align: left;
}
.ni:hover { background: rgba(0, 0, 0, .05); color: var(--text); text-decoration: none; }
html.dark .ni:hover { background: rgba(255, 255, 255, .05); }
.ni-row { display: flex; align-items: stretch; }
.ni-row > .ni { flex: 1; min-width: 0; }
.ni-row:hover { background: rgba(0, 0, 0, .05); }
html.dark .ni-row:hover { background: rgba(255, 255, 255, .05); }
.ni-row:hover .ni { background: none; color: var(--text); }
.ni-row .chev { padding: 2px 10px 2px 4px; color: var(--muted); }
.ni-row .chev:hover { color: var(--text); }
.ni.active { background: var(--act-bg) !important; color: var(--act-fg) !important; }
.ni-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ni-ext { flex-shrink: 0; opacity: .6; font-size: .75rem; }
.chev {
  font-size: .65rem; transition: transform .3s ease; flex-shrink: 0; margin-left: auto;
  border: none; background: none; color: inherit; cursor: pointer; padding: 2px 4px; border-radius: 4px;
}
.chev.open { transform: rotate(90deg); }
.tag { font-size: .6rem; padding: 1px 5px; border-radius: 99px; font-weight: 700; flex-shrink: 0; background: var(--bg2); color: var(--muted); border: 1px solid var(--border); }
.tag-Beta { background: #dbeafe; color: #1e40af; border: none; }
.tag-Experimental { background: #ede9fe; color: #6d28d9; border: none; }
.tag-Deprecated { background: #fee2e2; color: #991b1b; border: none; }
.tag-New { background: #dcfce7; color: #166534; border: none; }
html.dark .tag-Beta { background: #1a2d4a; color: #7db8f7; }
html.dark .tag-Experimental { background: #251a4a; color: #b0a0e8; }
html.dark .tag-Deprecated { background: #3a1818; color: #d49090; }
html.dark .tag-New { background: #0e2818; color: #80bb96; }

/* Collapse animation via grid rows, no phantom max-height delays. */
.nc {
  display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease;
  border-left: 1px solid rgba(0, 0, 0, .12); margin-left: 14px;
}
html.dark .nc { border-left-color: rgba(255, 255, 255, .1); }
.nc.open { grid-template-rows: 1fr; }
.nc > div { overflow: hidden; min-height: 0; }
.nc .ni { padding-left: 12px; }

/* ── Content column ──────────────────────────────────────────────────────── */
#main-right { flex: 1; min-width: 0; display: flex; flex-direction: column; }
#page-cover { display: none; overflow: hidden; border-radius: 0 0 18px 0; line-height: 0; aspect-ratio: 1990/480; }
#page-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
#content-row { flex: 1; display: flex; min-width: 0; }
#cwrap { flex: 1; min-width: 0; display: flex; justify-content: center; padding: 32px 24px 64px; }
#cinner { flex: 1; min-width: 0; max-width: 870px; }
.bc { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-size: .8rem; color: var(--muted); margin-bottom: 18px; }
img.page-banner {
  width: 100%; border-radius: 10px; margin-bottom: 1.5rem; display: block;
  max-height: 320px; object-fit: contain; background: var(--bg2);
}
h1.ptitle { font-size: 1.9rem; font-weight: 700; line-height: 1.2; margin-bottom: 6px; outline: none; }
h1.ptitle .tag { vertical-align: middle; margin-left: 8px; font-size: .65rem; padding: 2px 8px; }
p.psubtitle { font-size: 1.05rem; color: var(--muted); margin: 0 0 12px; line-height: 1.5; }
.pmeta { display: flex; flex-wrap: wrap; gap: 14px; font-size: .78rem; color: var(--muted); margin-bottom: 24px; }
.pmeta:empty { display: none; }

/* ── Table of contents ───────────────────────────────────────────────────── */
#toc {
  width: 286px; flex-shrink: 0; position: sticky; top: 56px;
  height: calc(100vh - 56px); overflow-y: auto; padding: 20px 0 20px 14px; display: none;
}
@media (min-width: 1180px) { #toc { display: block; } }
.toc-hdr { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--sep); margin-bottom: 6px; }
.toc-a {
  display: block; font-size: .8rem; color: var(--muted); padding: 3px 0 3px 8px;
  border-left: 2px solid transparent; text-decoration: none; line-height: 1.4;
}
.toc-a:hover { color: var(--text); text-decoration: none; }
.toc-a.on { color: var(--link); border-left-color: var(--link); }
.toc-h2 { font-weight: 700; }
.toc-h3 { padding-left: 20px; }

/* ── Prose ───────────────────────────────────────────────────────────────── */
.prose { font-size: .9375rem; line-height: 1.75; color: var(--text); }
.prose h1, .prose h2, .prose h3, .prose h4 { position: relative; scroll-margin-top: 72px; }
.prose h1 { font-size: 1.6rem; font-weight: 700; margin: 2rem 0 .8rem; line-height: 1.25; }
.prose h2 { font-size: 1.3rem; font-weight: 600; margin: 2rem 0 .75rem; padding-bottom: .5rem; border-bottom: 1px solid var(--border); }
.prose h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 .5rem; }
.prose h4 { font-size: 1rem; font-weight: 600; margin: 1.25rem 0 .4rem; }
.hanchor {
  margin-left: 8px; color: var(--muted); opacity: 0; font-weight: 400;
  text-decoration: none; transition: opacity .12s;
}
.prose h1:hover .hanchor, .prose h2:hover .hanchor, .prose h3:hover .hanchor,
.prose h4:hover .hanchor, .hanchor:focus-visible { opacity: 1; }
.hanchor:hover { color: var(--link); text-decoration: none; }
.prose p { margin-bottom: .9rem; }
.prose ul, .prose ol { margin: .2rem 0 .9rem 1.5rem; }
.prose ul ul, .prose ol ol, .prose ul ol, .prose ol ul { margin-bottom: .2rem; }
.prose li { margin-bottom: .2rem; }
.prose li.task { list-style: none; margin-left: -1.2rem; }
.prose li.task input { margin-right: .45em; vertical-align: -.1em; accent-color: var(--link); }
.prose a { color: var(--link); }
.prose a.ext::after { content: '↗'; font-size: .75em; margin-left: 2px; opacity: .6; }
.prose code {
  font-family: 'SF Mono', Consolas, 'Cascadia Code', monospace; font-size: .84em;
  background: var(--bg2); border: 1px solid var(--border); padding: .1em .35em; border-radius: 4px;
}

/* ── Code blocks ─────────────────────────────────────────────────────────── */
.prose pre {
  position: relative; margin: 1rem 0; border-radius: 8px; overflow: hidden;
  background: var(--code-bg); border: 1px solid var(--code-border);
}
.prose pre code {
  background: transparent !important; border: none !important; border-radius: 0;
  font-size: .875rem; display: block; overflow-x: auto; padding: 14px 16px;
  line-height: 1.6;
}
.prose pre[data-lang] code, .prose pre[data-title] code { padding-top: 44px; }
.code-head {
  position: absolute; top: 0; left: 0; right: 0; display: flex; align-items: center;
  padding: 5px 12px; font-size: .7rem; color: var(--muted);
  font-family: 'SF Mono', Consolas, monospace; letter-spacing: .04em;
  background: rgba(0, 0, 0, .03); border-bottom: 1px solid var(--code-border); gap: 10px;
}
html.dark .code-head { background: rgba(255, 255, 255, .04); }
.code-head .code-title { font-weight: 600; color: var(--text); }
.copy-btn {
  position: absolute; top: 6px; right: 8px; padding: 3px 10px; font-size: .72rem;
  border: 1px solid var(--border); border-radius: 5px; background: var(--bg);
  color: var(--muted); cursor: pointer; z-index: 2; transition: color .12s, border-color .12s;
}
.copy-btn:hover { color: var(--text); border-color: var(--link); }
.prose pre:not([data-lang]):not([data-title]) .copy-btn { background: color-mix(in srgb, var(--bg) 75%, transparent); }

/* highlighter tokens */
.tk-cmt { color: var(--tk-cmt); font-style: italic; }
.tk-str { color: var(--tk-str); }
.tk-num { color: var(--tk-num); }
.tk-kw { color: var(--tk-kw); }
.tk-lit { color: var(--tk-lit); }
.tk-fn { color: var(--tk-fn); }
.tk-type { color: var(--tk-type); }
.tk-prop { color: var(--tk-prop); }
.tk-tag { color: var(--tk-tag); }
.tk-attr { color: var(--tk-attr); }
.tk-var { color: var(--tk-var); }
.tk-meta { color: var(--tk-meta); }
.tk-sec { color: var(--tk-sec); font-weight: 600; }
.tk-ins { color: var(--tk-ins); background: var(--tk-ins-bg); display: inline-block; width: 100%; }
.tk-del { color: var(--tk-del); background: var(--tk-del-bg); display: inline-block; width: 100%; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: .8rem 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.prose th { background: var(--bg2); font-weight: 600; padding: 8px 12px; border: 1px solid var(--border); text-align: left; }
.prose td { padding: 8px 12px; border: 1px solid var(--border); }
.prose tr:nth-child(even) td { background: var(--bg2); }

/* ── Blockquotes + callouts ──────────────────────────────────────────────── */
.prose blockquote {
  background: var(--bg2); border-left: 4px solid var(--border); border-radius: 0 8px 8px 0;
  padding: 12px 16px; margin: .8rem 0; font-size: .95rem; color: var(--muted);
}
.prose blockquote p { margin-bottom: .4rem; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose blockquote.ci, .prose blockquote.cw, .prose blockquote.cd, .prose blockquote.ct {
  border-radius: 0 8px 8px 0; color: var(--text);
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px;
}
.prose blockquote.ci { background: var(--ci-bg); border-left: 4px solid var(--ci-b) !important; }
.prose blockquote.cw { background: var(--cw-bg); border-left: 4px solid var(--cw-b) !important; }
.prose blockquote.cd { background: var(--cd-bg); border-left: 4px solid var(--cd-b) !important; }
.prose blockquote.ct { background: var(--ct-bg); border-left: 4px solid var(--ct-b) !important; }
.callout-icon { flex-shrink: 0; margin-top: 2px; line-height: 1; }
.callout-body { flex: 1; min-width: 0; }
.callout-body p:first-child { margin-top: 0; }
.callout-body p:last-child { margin-bottom: 0; }
.callout-title { display: block; font-weight: 700; margin-bottom: 2px; }

.prose hr { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.prose img { max-width: 100%; border-radius: 6px; margin: .5rem 0; cursor: zoom-in; }
.prose a img, .prose .md-card img { cursor: pointer; }
.prose figure, .prose .md-figure { margin: 1rem 0; text-align: left; }
.prose figure img, .prose .md-figure img { margin: 0; }
.prose figcaption { font-size: .8rem; color: var(--muted); margin-top: .35rem; }
.prose .align-center { text-align: center; }
.prose .align-right { text-align: right; }
.prose .align-left { text-align: left; }
.prose .align-center img, .prose .align-right img, .prose .align-left img,
.prose .align-center .md-figure, .prose .align-right .md-figure, .prose .align-left .md-figure { display: inline-block; }
.text-success { color: var(--ct-b); }
.text-danger { color: var(--cd-b); }
mark { background: none; font-weight: 600; color: inherit; }
.prose sup { font-size: .75em; vertical-align: super; line-height: 1; }

/* ── Image styling (fit/ratio/rounded/shadow/border) ─────────────────────── */
.prose .md-img-rounded { border-radius: 10px; }
.prose .md-img-shadow { box-shadow: 0 4px 16px rgba(0, 0, 0, .16), 0 1px 4px rgba(0, 0, 0, .1); }
html.dark .prose .md-img-shadow { box-shadow: 0 4px 20px rgba(0, 0, 0, .5); }
.prose .md-img-border { border: 1px solid var(--border); }
/* an image given aspect-ratio should fill its box width by default */
.prose img[style*="aspect-ratio"] { display: block; }

/* ── Keyboard keys ───────────────────────────────────────────────────────── */
kbd {
  display: inline-block; font-family: 'SF Mono', Consolas, monospace; font-size: .78em;
  line-height: 1; padding: .28em .5em; margin: 0 .1em; color: var(--text);
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 5px; box-shadow: 0 1px 0 var(--border); white-space: nowrap; vertical-align: middle;
}

/* ── Badges ──────────────────────────────────────────────────────────────── */
.md-badge {
  display: inline-block; font-size: .7rem; font-weight: 700; line-height: 1.4;
  padding: .1em .55em; border-radius: 99px; vertical-align: middle;
  border: 1px solid transparent; letter-spacing: .01em;
}
.md-badge-neutral { background: var(--bg2); color: var(--muted); border-color: var(--border); }
.md-badge-info { background: var(--ci-bg); color: var(--ci-b); }
.md-badge-success { background: var(--ct-bg); color: var(--ct-b); }
.md-badge-warning { background: var(--cw-bg); color: var(--cw-b); }
.md-badge-danger { background: var(--cd-bg); color: var(--cd-b); }

/* ── Layout grid (arrange any content in columns/rows) ───────────────────── */
.md-grid {
  display: grid; gap: 16px; margin: 1.2rem 0;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));  /* auto grid */
  align-items: start;
}
.md-grid-fixed { grid-template-columns: repeat(var(--md-cols, 2), minmax(0, 1fr)); }
.md-grid-cell { min-width: 0; }
.md-grid-cell > *:first-child { margin-top: 0; }
.md-grid-cell > *:last-child { margin-bottom: 0; }
/* cards/callouts sit flush inside a cell rather than adding their own margin */
.md-grid-cell > .md-card,
.md-grid-cell > .md-cardrow { margin: 0; }
/* Collapse to a single column on mobile. Overrides .md-grid-fixed because it is
   the same specificity and comes later; no inline grid-template-columns to beat. */
@media (max-width: 640px) {
  .md-grid, .md-grid-fixed { grid-template-columns: 1fr; }
}

/* ── Galleries ───────────────────────────────────────────────────────────── */
.md-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 1.2rem 0; }
.md-gallery-cell { margin: 0; }
.md-gallery-cell img, .md-gallery-cell .md-figure { margin: 0; width: 100%; }
.md-gallery-cell img { aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; display: block; }
.md-gallery-cell figcaption { margin-top: .3rem; }
@media (max-width: 700px) { .md-gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 440px) { .md-gallery { grid-template-columns: 1fr; } }

/* ── Steps ───────────────────────────────────────────────────────────────── */
.md-steps { list-style: none; counter-reset: step; margin: 1.2rem 0 1.2rem .5rem; padding: 0; }
.md-step { counter-increment: step; position: relative; padding: 0 0 1.4rem 2.6rem; }
.md-step::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 1.7rem; height: 1.7rem; border-radius: 50%;
  background: var(--act-bg); color: var(--act-fg);
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700; z-index: 1;
}
/* connector line between step markers */
.md-step:not(:last-child)::after {
  content: ''; position: absolute; left: calc(.85rem - 1px); top: 1.7rem; bottom: 0;
  width: 2px; background: var(--border);
}
.md-step-body > *:first-child { margin-top: .15rem; }
.md-step-body > *:last-child { margin-bottom: 0; }

/* ── Field / parameter tables ────────────────────────────────────────────── */
.md-field { border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; margin: .5rem 0; }
.md-field + .md-field { margin-top: -.1rem; }
.md-field-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.md-field-name { font-size: .875rem; font-weight: 600; background: var(--bg2); border: 1px solid var(--border); padding: .1em .4em; border-radius: 5px; }
.md-field-type { font-size: .75rem; font-family: 'SF Mono', Consolas, monospace; color: var(--link); }
.md-field-req { font-size: .65rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--cd-b); background: var(--cd-bg); padding: .1em .45em; border-radius: 4px; }
.md-field-default { font-size: .75rem; color: var(--muted); }
.md-field-default code { font-size: .95em; }
.md-field-desc { font-size: .9rem; color: var(--text); margin-top: 6px; }
.md-field-desc > *:first-child { margin-top: 0; }
.md-field-desc > *:last-child { margin-bottom: 0; }

/* ── Tabs ────────────────────────────────────────────────────────────────── */
.gb-tabs { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin: 1rem 0; }
.gb-tabs-nav { display: flex; border-bottom: 1px solid var(--border); background: var(--sidebar); overflow-x: auto; }
.gb-tab-btn {
  padding: 8px 16px; background: none; border: none; border-bottom: 2px solid transparent;
  cursor: pointer; font-size: .85rem; color: var(--muted); white-space: nowrap; transition: color .15s;
}
.gb-tab-btn:hover { color: var(--text); }
.gb-tab-btn.active { color: var(--link); border-bottom-color: var(--link); font-weight: 600; }
.gb-tabs-body { padding: 16px; }
.gb-tab-pane { display: none; }
.gb-tab-pane.active { display: block; }

/* ── Embeds + page refs ──────────────────────────────────────────────────── */
.gb-embed-link {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border: 1px solid var(--border); border-radius: 8px; text-decoration: none !important;
  color: var(--text); margin: .75rem 0; transition: border-color .15s;
}
.gb-embed-link:hover { border-color: var(--link); }
.gb-embed-icon { font-size: 1.2rem; flex-shrink: 0; }
.gb-embed-body { display: flex; flex-direction: column; min-width: 0; }
.gb-embed-domain { font-weight: 600; font-size: .85rem; }
.gb-embed-url { font-size: .75rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gb-pageref {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 6px; text-decoration: none !important;
  color: var(--text); margin: .5rem 0; transition: border-color .15s, background .15s;
}
.gb-pageref:hover { border-color: var(--link); background: var(--hover); }
.gb-pageref-icon { flex-shrink: 0; }
.gb-pageref-title { flex: 1; font-size: .9rem; font-weight: 500; }
.gb-pageref-arrow { color: var(--muted); font-size: .9rem; }

/* ── Expand / details ────────────────────────────────────────────────────── */
.prose details { border: 1px solid var(--border); border-radius: 8px; margin: .6rem 0; overflow: hidden; }
.prose summary {
  display: flex; align-items: center; gap: .6rem; padding: .75rem 1rem; cursor: pointer;
  font-weight: 600; font-size: .95rem; list-style: none; user-select: none;
  background: var(--sidebar); transition: background .15s;
}
.prose summary::-webkit-details-marker { display: none; }
.prose summary::before { content: '▶'; font-size: .65rem; color: var(--muted); transition: transform .2s; flex-shrink: 0; }
.prose details[open] summary { background: var(--hover); }
.prose details[open] summary::before { transform: rotate(90deg); }
.prose details > *:not(summary) { padding: .75rem 1rem; border-top: 1px solid var(--border); }
.md-expand-body > *:first-child { margin-top: 0; }
.md-expand-body > *:last-child { margin-bottom: 0; }

/* ── Material cards ──────────────────────────────────────────────────────── */
.md-card {
  background: var(--bg2); border-radius: 10px; padding: 20px 24px; margin: 1.2rem 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .1), 0 1px 3px rgba(0, 0, 0, .08);
  transition: box-shadow .2s, transform .2s; overflow: hidden;
}
.md-card:hover { box-shadow: 0 6px 18px rgba(0, 0, 0, .14), 0 2px 6px rgba(0, 0, 0, .1); transform: translateY(-1px); }
.md-card-bgimg { color: #fff; text-shadow: 0 1px 3px rgba(0, 0, 0, .5); }
.md-card p:last-child { margin-bottom: 0; }
.md-card h1, .md-card h2, .md-card h3 { border: none; margin-top: .5rem; }
.md-card .hanchor { display: none; }
.md-card-img { width: 100%; border-radius: 6px; margin-bottom: 12px; display: block; object-fit: cover; }
.md-card-imgband { margin: 0 -24px 16px; height: 140px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.md-card-imgband img { max-width: 70%; max-height: 100px; object-fit: contain; display: block; }
html.dark .md-card { box-shadow: 0 2px 8px rgba(0, 0, 0, .35), 0 1px 3px rgba(0, 0, 0, .25); }
html.dark .md-card:hover { box-shadow: 0 6px 20px rgba(0, 0, 0, .5), 0 2px 8px rgba(0, 0, 0, .3); }
html.dark .md-card-custom-bg { background: var(--bg2) !important; color: var(--text) !important; }
.md-cardrow { display: flex; flex-wrap: wrap; gap: 16px; margin: 1.2rem 0; }
.md-cardrow > .md-card, .md-cardrow > a.md-card-link { flex: 1; min-width: 220px; margin: 0; }
a.md-card-link { display: flex; flex-direction: column; text-decoration: none !important; color: inherit; }
a.md-card-link > .md-card { flex: 1; margin: 0; }
a.md-card-link:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 10px; }

/* ── Nav cards / ref cards / link buttons / file card ────────────────────── */
.md-navcards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 1.2rem 0; }
.md-navcard {
  display: flex; align-items: center; justify-content: space-between; padding: 13px 18px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  text-decoration: none !important; color: var(--text); gap: 10px;
  font-size: .9375rem; font-weight: 500; transition: border-color .15s, background .15s;
}
.md-navcard:hover { border-color: var(--link); background: var(--bg2); color: var(--text); }
.md-navcard-title { flex: 1; }
.md-navcard-arrow { color: var(--muted); flex-shrink: 0; font-size: 1.1rem; line-height: 1; }
@media (max-width: 600px) { .md-navcards { grid-template-columns: 1fr; } }

.md-refcards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 1.2rem 0; }
.md-refcard {
  display: flex; align-items: flex-start; gap: 14px; padding: 16px 18px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  text-decoration: none !important; color: var(--text); transition: border-color .15s, background .15s;
}
.md-refcard:hover { border-color: var(--link); background: var(--bg2); }
.md-refcard-icon { flex-shrink: 0; color: var(--link); margin-top: 1px; opacity: .85; }
.md-refcard-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.md-refcard-title { font-size: .9375rem; font-weight: 600; color: var(--text); line-height: 1.3; }
.md-refcard-desc { font-size: .8125rem; color: var(--muted); line-height: 1.5; }
@media (max-width: 600px) { .md-refcards { grid-template-columns: 1fr; } }

.md-linkbtns { display: flex; flex-wrap: wrap; gap: 10px; margin: 1rem 0; }
.md-pagelink {
  display: inline-flex; align-items: center; padding: 9px 16px;
  border: 1px solid var(--border); border-radius: 8px; color: var(--text);
  text-decoration: none !important; font-size: .875rem; font-weight: 500; background: var(--bg);
  transition: background .15s, border-color .15s, transform .1s, color .15s;
}
.md-pagelink:hover { background: var(--bg2); border-color: var(--link); color: var(--link); transform: translateY(-1px); }
.md-pagelink-arr { opacity: .5; margin-left: 4px; }

.md-filecard {
  display: flex; align-items: center; gap: 14px; padding: 14px 18px;
  background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
  text-decoration: none !important; color: var(--text); margin: .8rem 0;
  transition: background .15s, border-color .15s;
}
.md-filecard:hover { border-color: var(--link); }
.md-filecard-icon { flex-shrink: 0; color: var(--muted); display: flex; align-items: center; }
.md-filecard-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.md-filecard-name { font-weight: 500; font-size: .9375rem; color: var(--text); }
.md-filecard-ext { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

/* ── Video ───────────────────────────────────────────────────────────────── */
.md-video-wrap { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 10px; margin: 1rem 0; background: var(--bg2); }
.md-video-wrap iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; border-radius: 10px; }

/* ── Material buttons ────────────────────────────────────────────────────── */
.md-btn {
  display: inline-flex; align-items: center; justify-content: center; padding: 9px 22px;
  border-radius: 6px; font-size: .875rem; font-weight: 600; cursor: pointer;
  text-decoration: none !important; box-shadow: 0 1px 4px rgba(0, 0, 0, .22);
  margin: .25rem .25rem .25rem 0; vertical-align: middle; line-height: 1.4; white-space: nowrap;
  transition: filter .15s, box-shadow .15s, transform .1s;
}
.md-btn:hover { filter: brightness(1.1); box-shadow: 0 3px 10px rgba(0, 0, 0, .28); transform: translateY(-1px); }
.md-btn:active { transform: translateY(0); box-shadow: 0 1px 3px rgba(0, 0, 0, .2); filter: brightness(.96); }

/* ── Page footer: edit link, prev/next ───────────────────────────────────── */
#pagefoot { margin-top: 32px; }
.edit-top { display: flex; justify-content: flex-end; margin: 0 0 10px; }
.edit-top:empty { display: none; }
.edit-row { display: flex; align-items: center; gap: 16px; padding-top: 14px; border-top: 1px solid var(--border); }
.edit-link, .copy-page {
  display: inline-flex; align-items: center; gap: 5px; font-size: .8rem; color: var(--muted);
  background: none; border: none; cursor: pointer; padding: 0;
}
.edit-link:hover, .copy-page:hover { color: var(--link); text-decoration: none; }
.pn { display: flex; justify-content: space-between; gap: 14px; margin-top: 20px; }
.pn:empty { display: none; }
.pn-btn {
  flex: 1; display: flex; flex-direction: column; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 8px; text-decoration: none !important;
  color: var(--text); transition: border-color .15s, background .15s;
}
.pn-btn:hover { border-color: var(--link); background: var(--bg2); }
.pn-btn.r { text-align: right; }
.pn-lbl { font-size: .72rem; color: var(--muted); margin-bottom: 2px; }
.pn-ttl { font-size: .875rem; font-weight: 600; }

/* ── Search modal ────────────────────────────────────────────────────────── */
#smodal {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, .55); align-items: flex-start; justify-content: center; padding-top: 72px;
}
#smodal.open { display: flex; }
.sbox {
  width: 100%; max-width: 580px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 12px; overflow: hidden; box-shadow: 0 24px 64px rgba(0, 0, 0, .35);
}
#sinput { width: 100%; padding: 13px 16px; font-size: 1rem; border: none; background: transparent; color: var(--text); outline: none; }
#sinput:focus-visible { outline: none; box-shadow: inset 0 -2px 0 var(--link); }
.sresults { max-height: 380px; overflow-y: auto; }
.sitem { display: block; padding: 9px 15px; border-top: 1px solid var(--border); cursor: pointer; text-decoration: none !important; color: var(--text); }
.sitem:hover, .sitem.hi { background: var(--bg2); }
.si-title { font-weight: 600; font-size: .875rem; }
.si-title .si-sec { font-weight: 400; color: var(--muted); }
.si-title mark, .si-desc mark { color: var(--link); font-weight: 700; background: none; }
.si-desc { font-size: .8rem; color: var(--muted); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sempty { padding: 22px; text-align: center; color: var(--muted); font-size: .875rem; }
.shint { padding: 8px 14px; border-top: 1px solid var(--border); font-size: .72rem; color: var(--muted); display: flex; gap: 14px; }
.shint kbd { padding: 1px 5px; border: 1px solid var(--border); border-radius: 3px; font-size: .68rem; }

/* ── 404 (in-app) + error page (standalone) ──────────────────────────────── */
.nf { text-align: center; padding: 48px 0; }
.nf-code { font-size: 4rem; font-weight: 800; color: var(--border); line-height: 1; }
.nf-title { font-size: 1.3rem; font-weight: 700; margin: 12px 0 6px; }
.nf-text { color: var(--muted); margin-bottom: 20px; }
.nf-actions { display: flex; gap: 10px; justify-content: center; }
.nf-actions a, .nf-actions button {
  display: inline-flex; padding: 8px 18px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text); font-size: .875rem; font-weight: 500; cursor: pointer;
  text-decoration: none !important; transition: border-color .15s;
}
.nf-actions a:hover, .nf-actions button:hover { border-color: var(--link); color: var(--link); }
.err-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; background: var(--bg); color: var(--text); font-family: -apple-system, 'Segoe UI', Roboto, sans-serif; }
.err-code { font-size: 5rem; font-weight: 800; color: var(--border); line-height: 1; }
.err-msg { color: var(--muted); }
.err-home { color: var(--link); margin-top: 10px; }

/* ── Lightbox ────────────────────────────────────────────────────────────── */
#lightbox {
  display: none; position: fixed; inset: 0; z-index: 250; background: rgba(0, 0, 0, .85);
  align-items: center; justify-content: center; cursor: zoom-out; padding: 32px;
}
#lightbox.open { display: flex; }
#lightbox img { max-width: 100%; max-height: 100%; border-radius: 8px; box-shadow: 0 12px 48px rgba(0, 0, 0, .6); }

/* ── Back to top ─────────────────────────────────────────────────────────── */
.btt {
  position: fixed; right: 22px; bottom: 22px; z-index: 150; width: 38px; height: 38px;
  border-radius: 50%; border: 1px solid var(--border); background: var(--bg);
  color: var(--muted); cursor: pointer; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transform: translateY(6px);
  transition: opacity .2s, transform .2s, color .15s, border-color .15s;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .15);
}
.btt.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.btt:hover { color: var(--link); border-color: var(--link); }

/* ── Skeleton ────────────────────────────────────────────────────────────── */
.sk { background: linear-gradient(90deg, var(--bg2) 25%, var(--border) 50%, var(--bg2) 75%); background-size: 200%; animation: sk 1.4s infinite; border-radius: 5px; }
@keyframes sk { 0% { background-position: 200%; } 100% { background-position: -200%; } }

/* ── Mobile ──────────────────────────────────────────────────────────────── */
#sovl { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, .5); z-index: 90; }
@media (max-width: 900px) {
  #hbg { display: flex; }
  .top-nav { display: none; }
  #sidebar {
    position: fixed; top: 56px; left: 0; height: calc(100vh - 56px); z-index: 95;
    transform: translateX(-100%); transition: transform .22s ease;
  }
  #sidebar.open { transform: translateX(0); }
  #sovl.open { display: block; }
  #cwrap { padding: 20px 14px 48px; }
  body.drawer-open { overflow: hidden; }
  .search-pill kbd { display: none; }
}

/* ── Announcement bar ────────────────────────────────────────────────────── */
.announce {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 8px 44px; text-align: center; font-size: .85rem;
  background: var(--act-bg); color: var(--act-fg); position: relative;
}
.announce a { color: var(--act-fg); text-decoration: underline; }
.announce-close {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--act-fg); font-size: 1.3rem;
  line-height: 1; cursor: pointer; opacity: .8; padding: 0 4px;
}
.announce-close:hover { opacity: 1; }

/* ── Site footer ─────────────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); background: var(--bg2); }
.site-footer-inner {
  max-width: 1515px; margin: 0 auto; padding: 20px 24px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px; font-size: .85rem; color: var(--muted);
}
.site-footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer-links a { color: var(--muted); }
.site-footer-links a:hover { color: var(--link); }

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto !important; }
  .sk { animation: none; }
}

/* ── Print ───────────────────────────────────────────────────────────────── */
@media print {
  header, #sidebar, #sovl, #toc, #pn, #editwrap, #edittop, .btt, #smodal, #lightbox, .bc, .copy-btn, .hanchor { display: none !important; }
  #cwrap { padding: 0; }
  #cinner { max-width: 100%; }
  body { background: #fff; color: #000; }
  .prose pre { border: 1px solid #ddd; }
  .prose details { border: none; }
  .prose details > *:not(summary) { display: block !important; border: none; }
  .gb-tab-pane { display: block !important; padding-top: 8px; }
  .gb-tabs-nav { display: none; }
  .prose a.ext::after { content: ' (' attr(href) ')'; font-size: .8em; opacity: .7; }
}