/* llmwiki — god-level docs style */
:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  --bg-code: #edf0f5;                      /* v1.0 #119: slightly darker for better contrast */
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #6b7280;                   /* WCAG AA: 4.84:1 on white, 4.63:1 on --bg-alt */
  --border: #d1d5db;                       /* v1.0 #119: stronger card borders (was #e2e8f0) */
  --border-subtle: #e2e8f0;                /* for less prominent separators */
  --accent: #7C3AED;
  --accent-light: #a78bfa;
  --accent-bg: #f5f3ff;
  --radius: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);  /* v1.0 #119: card shadow */
  --shadow-card-hover: 0 4px 12px rgba(15, 23, 42, 0.12), 0 2px 4px rgba(15, 23, 42, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0a1d;
    --bg-alt: #110f26;
    --bg-card: #16142d;
    --bg-code: #1a1836;
    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #8b9bb5;  /* WCAG AA: 6.97:1 on dark bg */
    --border: #2d2b4a;
    --border-subtle: #1f1d3a;
    /* #385: --accent #7C3AED on the dark bg #0c0a1d is 4.63:1 — axe
       flags it as borderline. The lighter shade #a78bfa is 8.5:1 and
       comfortably above WCAG AA for normal text everywhere it's used
       (links, active nav, breadcrumbs, blockquote bars, card hovers). */
    --accent: #a78bfa;
    --accent-light: #c4b5fd;
    --accent-bg: #1e1a3a;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.45);
  }
}
:root[data-theme="dark"] {
  --bg: #0c0a1d;
  --bg-alt: #110f26;
  --bg-card: #16142d;
  --bg-code: #1a1836;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #8b9bb5;
  --border: #2d2b4a;
  --border-subtle: #1f1d3a;
  --accent: #a78bfa;        /* #385: bump for AA contrast on dark bg */
  --accent-light: #c4b5fd;  /* one step lighter for hover states */
  --accent-bg: #1e1a3a;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.45);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-wrap: break-word; word-wrap: break-word; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
/* Skip-to-content link — visible only on keyboard focus */
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; z-index: 999; padding: 8px 16px; background: var(--accent); color: #fff; font-weight: 600; font-size: 0.9rem; border-radius: 0 0 6px 0; text-decoration: none; }
/* #ui-h1 (#565): explicit focus styles. Reset overflow + width on focus
   so the link's content actually paints, and add a visible outline so
   the keyboard-focus ring isn't ambiguous against the accent bg. */
.skip-link:focus,
.skip-link:focus-visible { position: fixed; top: 0; left: 0; width: auto; height: auto; overflow: visible; outline: 3px solid #fff; outline-offset: 0; box-shadow: 0 0 0 6px var(--accent); }
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--text-muted); }
kbd { display: inline-block; padding: 2px 6px; font-family: var(--mono); font-size: 0.72rem; color: var(--text-secondary); background: var(--bg-code); border: 1px solid var(--border); border-radius: 4px; line-height: 1; }

/* Reading progress bar */
.progress-bar { position: fixed; top: 0; left: 0; height: 3px; width: 0%; background: var(--accent); z-index: 200; transition: width 0.1s; }

/* Nav */
/* v1.0 #119: add a subtle shadow + stronger blur so the nav stays grounded on light backgrounds */
.nav { position: sticky; top: 0; z-index: 100; background: var(--bg); border-bottom: 1px solid var(--border); box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.nav-inner { max-width: 1080px; margin: 0 auto; padding: 0 24px; height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.95rem; color: var(--text); text-decoration: none; flex-shrink: 0; }
.nav-brand:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 16px; }
.nav-links a { color: var(--text-secondary); font-size: 0.86rem; font-weight: 500; text-decoration: none; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
/* #385 S3: --accent is already bumped to #a78bfa in dark mode so the active
   nav has 8.5:1 contrast there. The underline is kept so the active state
   doesn't rely on color alone (WCAG 1.4.1 "Use of Color"). */
.nav-links a.active { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 2px; }

.nav-search-btn { display: flex; align-items: center; gap: 8px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; font-family: var(--font); color: var(--text-secondary); cursor: pointer; font-size: 0.82rem; transition: all 0.15s; }
.nav-search-btn:hover { border-color: var(--accent); color: var(--accent); }
.nav-search-btn svg { flex-shrink: 0; }
@media (max-width: 767px) { .nav-search-btn span, .nav-search-btn kbd { display: none; } }
/* Tablet + mobile: the six text anchors (Home/Projects/Sessions/Models/Compare/Changelog)
   overflow a 768px viewport at 0.9rem/gap-20, so collapse them below the
   1024 desktop breakpoint. Users still have Search + Theme in the top nav,
   the command palette via Cmd+K, and the mobile bottom nav below 767. */
@media (max-width: 1023px) { .nav-links > a { display: none; } }

/* #ui-m3 (#573): bump touch target from 36×36 to 44×44 (Apple HIG +
   WCAG 2.5.5 minimum). Visual icon stays the same; padding grows. */
.theme-toggle { background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-secondary); transition: all 0.2s; padding: 0; flex-shrink: 0; }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

/* Hero */
.hero { padding: 56px 0 40px; margin-bottom: 20px; background: var(--bg-alt); border-bottom: 1px solid var(--border); }
.hero-sm { padding: 32px 0 24px; margin-bottom: 12px; }
.hero h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; color: var(--text); margin-bottom: 8px; overflow-wrap: break-word; }
.hero .hero-sub { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; overflow-wrap: break-word; }
.hero .hero-sub code { font-family: var(--mono); background: var(--bg-card); padding: 1px 6px; border-radius: 4px; font-size: 0.82rem; border: 1px solid var(--border); }
.hero .hero-sub a { color: var(--accent); font-weight: 500; }

/* Breadcrumbs */
.breadcrumbs { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumbs a { color: var(--text-secondary); text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 2px; text-decoration-color: var(--border); }
.breadcrumbs a:hover { color: var(--accent); text-decoration: underline; }
.breadcrumbs .crumb-sep { margin: 0 6px; color: var(--text-muted); }
.breadcrumbs [aria-current="page"] { color: var(--text); font-weight: 500; }

/* Section */
.section { padding: 28px 0 32px; }
.section h2 { font-size: 1.5rem; font-weight: 700; margin: 24px 0 16px; color: var(--text); }
.section h3 { font-size: 1.15rem; font-weight: 600; margin: 20px 0 10px; color: var(--text); }

.meta-tools { font-size: 0.82rem; margin-bottom: 12px; overflow-wrap: break-word; }

/* Actions strip */
.session-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.btn { display: inline-flex; align-items: center; padding: 6px 14px; font-size: 0.82rem; font-weight: 500; background: var(--bg-card); border: 1px solid var(--border); border-radius: 6px; color: var(--text-secondary); cursor: pointer; text-decoration: none; transition: all 0.15s; font-family: var(--font); }
.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-primary { background: var(--accent); color: #ffffff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); color: #ffffff; }
.btn.copied { background: var(--accent-bg); color: var(--accent); border-color: var(--accent); }

/* Code copy button */
.code-wrap { position: relative; }
/* #ui-m4 (#574) + axe color-contrast follow-up: copy-code-btn was
   opacity: 0 by default; touch + keyboard users couldn't see it. The
   first fix used opacity: 0.6 by default but axe flagged the resulting
   blend (text color × 0.6 over page bg) as 4.5:1 borderline-failing.
   Switched to full opacity always-visible — no hover/focus state to
   reveal — and de-emphasised the button via lower-contrast neutral
   border + muted text instead of opacity. WCAG-clean. #ui-m3 (#573):
   padding bumped so the hit area lands at the 44×44 minimum. */
.copy-code-btn { position: absolute; top: 8px; right: 8px; padding: 8px 12px; min-width: 44px; min-height: 44px; font-size: 0.72rem; font-weight: 500; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; color: var(--text); cursor: pointer; font-family: var(--font); transition: border-color 0.15s, color 0.15s; z-index: 2; }
.copy-code-btn:hover, .copy-code-btn:focus-visible { border-color: var(--accent); color: var(--accent); }
.copy-code-btn.copied { background: var(--accent-bg); color: var(--accent); border-color: var(--accent); }

/* Content */
.content { color: var(--text); font-size: 0.95rem; max-width: 100%; overflow-wrap: break-word; word-wrap: break-word; min-width: 0; }
.content h1, .content h2, .content h3, .content h4 { margin: 28px 0 12px; font-weight: 600; color: var(--text); scroll-margin-top: 72px; overflow-wrap: break-word; }
.content h1 { font-size: 1.6rem; }
.content h2 { font-size: 1.3rem; border-bottom: 1px solid var(--border); padding-bottom: 6px; margin-top: 36px; }
.content h3 { font-size: 1.08rem; color: var(--accent); }
.content h4 { font-size: 0.98rem; color: var(--text-secondary); }
.content p { margin: 12px 0; color: var(--text); overflow-wrap: break-word; }
.content ul, .content ol { margin: 12px 0 12px 24px; }
.content li { margin: 4px 0; overflow-wrap: break-word; word-wrap: break-word; }
.content li code { word-break: break-all; }
.content code { font-family: var(--mono); background: var(--bg-code); padding: 2px 6px; border-radius: 4px; font-size: 0.82em; word-break: break-word; overflow-wrap: anywhere; }
.content pre { background: var(--bg-code); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; overflow-x: auto; overflow-y: hidden; margin: 16px 0; font-size: 0.82rem; line-height: 1.5; max-width: 100%; white-space: pre; }
.content pre code { background: none; padding: 0; font-size: inherit; word-break: normal; white-space: pre; overflow-wrap: normal; }
.content blockquote { border-left: 3px solid var(--accent); padding: 8px 16px; color: var(--text-secondary); background: var(--accent-bg); margin: 16px 0; border-radius: 0 var(--radius) var(--radius) 0; }
.content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.88rem; display: block; overflow-x: auto; }
.content th, .content td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; overflow-wrap: break-word; }
.content th { background: var(--bg-alt); font-weight: 600; }
.content tr:nth-child(even) { background: var(--bg-alt); }
.content strong { font-weight: 600; }
.content hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.content .headerlink { opacity: 0; margin-left: 8px; color: var(--text-muted); font-weight: 400; text-decoration: none; }
.content h1:hover .headerlink, .content h2:hover .headerlink, .content h3:hover .headerlink, .content h4:hover .headerlink { opacity: 1; }

/* v0.5: highlight.js owns token colours (see hljs-light / hljs-dark <link>
   tags in page_head). We only style the code block container so it matches
   the rest of the wiki's visual language. */
.article pre,
.article pre code.hljs {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow-x: auto;
}
.article pre code.hljs { padding: 14px 16px; display: block; }
.article pre { padding: 0; }
.article :not(pre) > code.hljs { background: transparent; padding: 0; }
/* a11y (#385 S2): the GitHub hljs theme uses several token colors that fail
   WCAG AA 4.5:1 contrast against our --bg-code background:
     hljs-keyword     #d73a49 → 4.17:1 (light) → #c23a40 (4.82:1)
     hljs-built_in    #005cc5 → 4.34:1 (light) → #0050a8 (4.78:1)
     hljs-number      #005cc5 → 4.34:1 (light) → #0050a8 (4.78:1)
     hljs-literal     #005cc5 → 4.34:1 (light) → #0050a8 (4.78:1)
     hljs-title       #6f42c1 → 4.40:1 (light) → #5c34a3 (4.65:1)
     hljs-attr        #005cc5 → 4.34:1 (light) → #0050a8 (4.78:1)
     hljs-symbol      #e36209 → 4.05:1 (light) → #c8530a (4.51:1)
   Dark-theme tokens stay on the hljs-dark stylesheet which already passes. */
:root:not([data-theme="dark"]) .hljs-keyword,
:root:not([data-theme="dark"]) .hljs-type { color: #c23a40; }
:root:not([data-theme="dark"]) .hljs-built_in,
:root:not([data-theme="dark"]) .hljs-number,
:root:not([data-theme="dark"]) .hljs-literal,
:root:not([data-theme="dark"]) .hljs-attr { color: #0050a8; }
:root:not([data-theme="dark"]) .hljs-title,
:root:not([data-theme="dark"]) .hljs-title.function_,
:root:not([data-theme="dark"]) .hljs-class .hljs-title { color: #5c34a3; }
:root:not([data-theme="dark"]) .hljs-symbol,
:root:not([data-theme="dark"]) .hljs-bullet { color: #c8530a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hljs-keyword,
  :root:not([data-theme="light"]) .hljs-type,
  :root:not([data-theme="light"]) .hljs-built_in,
  :root:not([data-theme="light"]) .hljs-number,
  :root:not([data-theme="light"]) .hljs-literal,
  :root:not([data-theme="light"]) .hljs-attr,
  :root:not([data-theme="light"]) .hljs-title,
  :root:not([data-theme="light"]) .hljs-symbol,
  :root:not([data-theme="light"]) .hljs-bullet { color: unset; }
}

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin: 16px 0; }
.card { display: block; padding: 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); transition: all 0.15s; box-shadow: var(--shadow-card); }
.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-card-hover); }
.card-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; color: var(--text); }
.card-meta { font-size: 0.82rem; color: var(--text-secondary); }
/* #455: small muted activity date range under the meta line. */
.card-date-range { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; font-variant-numeric: tabular-nums; }
/* #471: human-readable session description rendered as a subtitle on
   session detail pages and as a small line beneath the slug in the
   sessions index table. */
.session-description { font-size: 0.95rem; color: var(--text-secondary); margin: -8px 0 16px; line-height: 1.5; }
.session-cell-desc { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; line-height: 1.3; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* #476: richer tool-result collapsible card. Renders as
   `[badge] preview · N lines · X chars` so the user knows what's
   inside without expanding. The badge tints by outcome. */
.collapsible-result { margin: 12px 0; border: 1px solid var(--border); border-radius: 6px; padding: 0; background: var(--bg-card); }
.collapsible-result > summary { padding: 8px 12px; cursor: pointer; list-style: none; font-size: 0.85rem; line-height: 1.5; }
.collapsible-result > summary::-webkit-details-marker { display: none; }
.collapsible-result > summary:hover { background: var(--bg-alt); }
.collapsible-result[open] > summary { border-bottom: 1px solid var(--border); }
.collapsible-result > *:not(summary) { padding: 8px 12px; }
.tool-result-badge { display: inline-block; font-size: 0.7rem; font-weight: 600; padding: 1px 6px; border-radius: 3px; text-transform: uppercase; letter-spacing: 0.04em; }
.tool-result-ok    { background: rgba(5,150,105,0.12); color: #047857; }
.tool-result-error { background: rgba(220,38,38,0.12); color: #991B1B; }
:root[data-theme="dark"] .tool-result-ok    { background: rgba(52,211,153,0.18); color: #34D399; }
:root[data-theme="dark"] .tool-result-error { background: rgba(248,113,113,0.18); color: #F87171; }
.tool-result-preview { color: var(--text); font-family: var(--mono); font-size: 0.82rem; }
.tool-result-meta    { font-size: 0.78rem; }
.collapsible-result.outcome-error { border-color: rgba(220,38,38,0.4); }
.card-stats { font-size: 0.78rem; margin-top: 6px; }
.card-badge { margin-top: 8px; }

/* Content-freshness badge (#57) */
.freshness {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 10px; border-radius: 999px;
  font-size: 0.72rem; font-weight: 600; white-space: nowrap;
  border: 1px solid;
}
.freshness::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}
.fresh-green   { color: #15803d; background: #dcfce7; border-color: #86efac; }
.fresh-yellow  { color: #92400e; background: #fef3c7; border-color: #fcd34d; }
.fresh-red     { color: #b91c1c; background: #fee2e2; border-color: #fca5a5; }
.fresh-unknown { color: #6b7280; background: #f3f4f6; border-color: #d1d5db; }
:root[data-theme="dark"] .fresh-green   { color: #86efac; background: #052e16; border-color: #065f46; }
:root[data-theme="dark"] .fresh-yellow  { color: #fcd34d; background: #3a2a06; border-color: #78350f; }
:root[data-theme="dark"] .fresh-red     { color: #fca5a5; background: #3a0a0a; border-color: #7f1d1d; }
:root[data-theme="dark"] .fresh-unknown { color: #9ca3af; background: #1f2937; border-color: #374151; }
@media print {
  .freshness { background: #fff !important; color: #000 !important; border-color: #ccc !important; }
  .freshness::before { background: #000 !important; }
}

/* Sub-agent collapsible */
.sub-section { margin-top: 32px; }
.sub-section summary { font-size: 1.15rem; font-weight: 600; cursor: pointer; padding: 8px 0; color: var(--text-secondary); }
.sub-section summary:hover { color: var(--accent); }

/* Sessions table */
/* #ui-h10 (#569): isolation: isolate creates a stacking context so
   the sticky thead doesn't lose z-order against the page nav blur on
   iOS Safari. */
.table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-card); isolation: isolate; }
/* #452: table-layout: fixed pins column widths from <colgroup> so sticky <thead>
   columns stay aligned with <tbody> as the user scrolls. min-width keeps the
   table horizontally scrollable on narrow viewports rather than crushing cols. */
.sessions-table { width: 100%; min-width: 880px; border-collapse: collapse; font-size: 0.88rem; table-layout: fixed; }
.sessions-table td { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sessions-table td a { display: inline-block; max-width: 100%; overflow: hidden; text-overflow: ellipsis; vertical-align: bottom; }
/* #ui-h10 (#569): iOS Safari needs -webkit-sticky and a stacking
   context (isolation: isolate) on the table parent so the sticky
   thead doesn't lose its z-axis ordering against the nav blur. The
   `transform: translateZ(0)` gives older WebKit a hardware layer so
   the sticky cells don't get repainted as plain rows during scroll. */
.sessions-table thead {
  position: -webkit-sticky;
  position: sticky;
  top: 56px;
  background: var(--bg-alt);
  z-index: 1;
  transform: translateZ(0);
}
/* (.table-wrap isolation rule moved up to the main definition above) */
.sessions-table th, .sessions-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.sessions-table th { background: var(--bg-alt); font-weight: 600; color: var(--text-secondary); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }
.sessions-table tr:last-child td { border-bottom: none; }
.sessions-table tr:hover { background: var(--bg-alt); }
.sessions-table tr.selected { background: var(--accent-bg); }
.sessions-table td.num { text-align: right; font-variant-numeric: tabular-nums; color: var(--text-secondary); }
.sessions-table code { font-family: var(--mono); font-size: 0.82em; color: var(--text-secondary); }
.sessions-table tr[hidden] { display: none; }

/* Filter bar */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin-bottom: 16px; padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.filter-bar label { display: flex; flex-direction: column; gap: 4px; font-size: 0.72rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; }
.filter-bar select, .filter-bar input { padding: 6px 10px; font-size: 0.85rem; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; color: var(--text); font-family: var(--font); min-width: 140px; }
.filter-bar input[type="text"] { min-width: 180px; }
.filter-bar .btn { align-self: end; }
.filter-count { font-size: 0.78rem; margin-left: auto; align-self: end; }

/* Synthesis block */
.synthesis { background: var(--accent-bg); border: 1px solid var(--accent-light); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 24px; }
.synthesis h2, .synthesis h3 { color: var(--accent); margin-top: 0; }
.synthesis p { margin: 10px 0; }

/* Command palette */
/* #478: was gated by `[aria-hidden="false"]`. axe-core flags that as
   `aria-hidden-focus` because focusable children inside an aria-hidden
   element are unreachable to AT users. Now toggled via `.open` class
   that JS sets when the dialog is active; aria-hidden is removed
   entirely while open and `inert` is applied to sibling chrome to
   keep AT focus inside the dialog (#479). */
.palette { position: fixed; inset: 0; z-index: 300; display: none; }
.palette.open { display: block; }
.palette-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.5); backdrop-filter: blur(4px); }
.palette-modal { position: relative; max-width: 600px; margin: 10vh auto 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.palette-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.palette-header svg { color: var(--text-muted); flex-shrink: 0; }
.palette-header input { flex: 1; background: transparent; border: none; outline: none; font-family: var(--font); font-size: 0.95rem; color: var(--text); }
.palette-header input::placeholder { color: var(--text-muted); }
.palette-results { list-style: none; max-height: 50vh; overflow-y: auto; padding: 6px 0; }
.palette-results li { padding: 10px 16px; cursor: pointer; border-left: 3px solid transparent; }
.palette-results li.active { background: var(--accent-bg); border-left-color: var(--accent); }
.palette-results li:hover { background: var(--bg-alt); }
.palette-results .result-title { font-weight: 500; font-size: 0.9rem; color: var(--text); }
.palette-results .result-meta { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.palette-results .result-type { display: inline-block; padding: 1px 6px; background: var(--bg-code); border-radius: 3px; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.04em; margin-right: 6px; color: var(--accent); }
.palette-footer { display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--border); font-size: 0.75rem; background: var(--bg-alt); }

/* Help dialog */
/* #478: same .open class swap as the palette — aria-hidden gating
   was an axe-core violation for any focusable child. */
/* #ui-l8 (#581): hint + example paragraphs in the help dialog moved
   from inline style="" to these classes so the dialog stays
   strict-CSP-friendly. */
.help-dialog-hint { font-size: 0.82rem; margin: 4px 0 8px; }
.help-dialog-example { font-size: 0.82rem; margin-top: 6px; }
/* 404 page link list — was inline style="list-style:disc;...". */
.not-found-links { list-style: disc; padding-left: 24px; margin: 12px 0; }
.help-dialog { position: fixed; inset: 0; z-index: 250; display: none; }
.help-dialog.open { display: block; }
.help-modal { position: relative; max-width: 420px; margin: 15vh auto 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; box-shadow: var(--shadow); }
.help-modal h2 { font-size: 1.1rem; margin-bottom: 16px; }
.help-modal table { width: 100%; font-size: 0.88rem; margin-bottom: 16px; }
.help-modal td { padding: 6px 0; }
.help-modal td:first-child { width: 130px; }

/* Footer */
.footer { padding: 32px 0; border-top: 1px solid var(--border); margin-top: 48px; background: var(--bg-alt); }
.footer p { font-size: 0.85rem; color: var(--text-muted); text-align: center; }
.footer a { text-decoration: underline; text-underline-offset: 2px; }

/* Changelog page — narrow reading column + keep-a-changelog typography */
.container.narrow { max-width: 860px; }
.changelog-body { padding: 40px 0 64px; }
.changelog-body .article h2 { margin-top: 48px; padding-bottom: 8px; border-bottom: 1px solid var(--border); font-size: 1.5rem; }
.changelog-body .article h2:first-child { margin-top: 0; }
.changelog-body .article h3 { margin-top: 28px; font-size: 1.1rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.changelog-body .article h4 { margin-top: 20px; font-size: 0.98rem; }
.changelog-body .article ul { margin: 12px 0 20px; padding-left: 22px; }
.changelog-body .article li { margin: 6px 0; line-height: 1.6; }
.changelog-body .article li > code,
.changelog-body .article p > code { font-size: 0.86rem; padding: 1px 6px; background: var(--bg-code); border-radius: 4px; }
.changelog-body .article p { line-height: 1.7; }
.changelog-body .article a { color: var(--accent); }
.changelog-body .article hr { margin: 36px 0; border: 0; border-top: 1px solid var(--border); }
.changelog-body .article blockquote { margin: 16px 0; padding: 8px 16px; border-left: 3px solid var(--accent); color: var(--text-secondary); background: var(--bg-alt); border-radius: 0 4px 4px 0; }

/* v0.4: Related pages panel */
.related-pages { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.related-pages h3 { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 12px; }
.related-pages ul { list-style: none; margin: 0; padding: 0; }
.related-pages li { padding: 6px 0; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.related-pages li:last-child { border-bottom: none; }

/* v0.8 (#64, #72): GitHub-style 365-day activity heatmap. Rendered as a
   build-time SVG in build.py (see llmwiki/viz_heatmap.py). The CSS custom
   properties below get picked up by the inlined SVG via its own <style>
   block so the colors swap with the page theme. The pre-v0.8 JS-based
   tiny-strip heatmap is gone. */
:root {
  --heatmap-0: #dde1e6;        /* v1.0 #119: darker level-0 for visibility on white */
  --heatmap-1: #9be9a8;
  --heatmap-2: #40c463;
  --heatmap-3: #30a14e;
  --heatmap-4: #216e39;
}
:root[data-theme="dark"] {
  --heatmap-0: #161b22;
  --heatmap-1: #0e4429;
  --heatmap-2: #006d32;
  --heatmap-3: #26a641;
  --heatmap-4: #39d353;
}
.heatmap-section { padding-top: 16px; padding-bottom: 16px; }
.activity-heatmap { margin-bottom: 24px; padding: 14px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.heatmap-label { font-size: 0.78rem; margin-bottom: 8px; }
.heatmap-svg { display: block; max-width: 100%; }
.heatmap-svg rect { transition: stroke 0.1s; }
.heatmap-svg rect:hover { stroke: var(--accent); stroke-width: 1; }

/* v0.8 (#65): Tool-call bar chart — rendered as pure SVG by
   llmwiki/viz_tools.py. CSS custom properties drive the category
   colors so the page theme can override them; dark-mode variants
   use saturated fills that read against the dark card background. */
:root {
  /* v1.0 #119: slightly less saturated in light mode — bars read cleaner on white card background */
  --tool-cat-io: #2563eb;
  --tool-cat-search: #9333ea;
  --tool-cat-exec: #ea580c;
  --tool-cat-network: #059669;
  --tool-cat-plan: #475569;
  --tool-cat-other: #6b7280;
}
:root[data-theme="dark"] {
  --tool-cat-io: #60a5fa;
  --tool-cat-search: #c084fc;
  --tool-cat-exec: #fb923c;
  --tool-cat-network: #34d399;
  --tool-cat-plan: #94a3b8;
  --tool-cat-other: #9ca3af;
}
.tool-chart-section { padding-top: 8px; padding-bottom: 16px; }
.tool-chart-card { margin: 16px 0 24px; padding: 14px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.tool-chart-label { font-size: 0.78rem; margin-bottom: 8px; }
.tool-chart-svg { display: block; max-width: 100%; }
.tool-chart-svg rect { transition: opacity 0.1s; stroke: rgba(15, 23, 42, 0.08); stroke-width: 1; }  /* v1.0 #119: thin stroke for bar definition */
:root[data-theme="dark"] .tool-chart-svg rect { stroke: rgba(255, 255, 255, 0.05); }
.tool-chart-svg rect:hover { opacity: 0.85; }

/* v0.8 (#66): Token usage card — stacked bars for four token categories
   plus a cache hit ratio badge. Rendered as plain HTML by
   llmwiki/viz_tokens.py. Colors follow the same category convention as
   the tool chart (blue = input, amber = cache_creation, green = cache_read,
   purple = output). */
:root {
  --token-input: #3b82f6;
  --token-cache-creation: #f59e0b;
  --token-cache-read: #10b981;
  --token-output: #a855f7;
  --token-area-fill: rgba(59, 130, 246, 0.22);
  --token-area-stroke: #3b82f6;
}
:root[data-theme="dark"] {
  --token-input: #60a5fa;
  --token-cache-creation: #fbbf24;
  --token-cache-read: #34d399;
  --token-output: #c084fc;
  --token-area-fill: rgba(96, 165, 250, 0.22);
  --token-area-stroke: #60a5fa;
}
.token-card { margin: 16px 0 24px; padding: 14px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.token-card-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.token-card-title { font-weight: 600; font-size: 0.9rem; }
.token-card-total { font-size: 0.78rem; }
.token-row { display: grid; grid-template-columns: 120px 1fr 64px; gap: 10px; align-items: center; margin: 4px 0; font-size: 0.82rem; }
.token-label { color: var(--text-secondary); }
.token-bar-wrap { height: 10px; background: var(--bg-alt); border-radius: 3px; overflow: hidden; }
.token-bar { display: block; height: 100%; border-radius: 3px; }
.token-bar-input { background: var(--token-input); }
.token-bar-cache_creation { background: var(--token-cache-creation); }
.token-bar-cache_read { background: var(--token-cache-read); }
.token-bar-output { background: var(--token-output); }
.token-value { text-align: right; font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--text-secondary); }
.token-ratio { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); font-size: 0.8rem; display: flex; gap: 8px; align-items: baseline; }
.token-ratio-label { color: var(--text-secondary); }
.token-ratio-value { font-weight: 600; font-size: 0.95rem; }
.token-ratio-value.tier-green   { color: #15803d; }
.token-ratio-value.tier-yellow  { color: #92400e; }
.token-ratio-value.tier-red     { color: #b91c1c; }
.token-ratio-value.tier-unknown { color: var(--text-secondary); }
:root[data-theme="dark"] .token-ratio-value.tier-green  { color: #86efac; }
:root[data-theme="dark"] .token-ratio-value.tier-yellow { color: #fcd34d; }
:root[data-theme="dark"] .token-ratio-value.tier-red    { color: #fca5a5; }
.token-ratio.tier-green   { background: rgba(34, 197, 94, 0.08); }
.token-ratio.tier-yellow  { background: rgba(234, 179, 8, 0.08); }
.token-ratio.tier-red     { background: rgba(239, 68, 68, 0.08); }
.token-ratio { padding: 8px 10px; border-radius: 4px; }
.token-timeline-svg { display: block; max-width: 100%; }

/* Site-wide token stats on the home page */
.token-stats-section { padding-top: 8px; padding-bottom: 16px; }
.token-stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 8px 0 24px; }
.token-stat { padding: 14px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; color: var(--text); display: block; }
a.token-stat:hover { border-color: var(--accent); }
.token-stat-label { font-size: 0.76rem; margin-bottom: 4px; }
.token-stat-value { font-size: 1.4rem; font-weight: 600; font-family: 'JetBrains Mono', monospace; }
.token-stat-sub { font-size: 0.75rem; margin-top: 4px; }

/* v0.7 (#55): Model entity info card + /models/ sortable table. The
   `.model-card` is rendered by llmwiki/models_page.py.render_model_info_card;
   the `.models-table` is inside render_models_index. Both reuse existing
   theme vars — no new custom properties. */
.model-card { margin: 20px 0; padding: 18px 22px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.model-card-header { display: flex; gap: 10px; align-items: baseline; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.model-card-title { font-size: 1.25rem; font-weight: 700; }
.model-card-provider { font-size: 0.95rem; }
.model-card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px 18px; margin-bottom: 14px; }
.model-card-kv { display: flex; flex-direction: column; gap: 2px; font-size: 0.88rem; }
.model-card-kv .muted { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }
.model-card-row { display: flex; gap: 12px; align-items: baseline; font-size: 0.88rem; margin: 8px 0; }
.model-card-row-label { min-width: 80px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }
.model-price-cell { margin-right: 14px; font-family: 'JetBrains Mono', monospace; }
.model-card-section-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; margin-top: 14px; margin-bottom: 8px; }
.model-card-benches { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.model-bench-row { display: grid; grid-template-columns: 140px 1fr 52px; gap: 10px; align-items: center; margin: 4px 0; font-size: 0.85rem; }
.model-bench-label { color: var(--text-secondary); }
.model-bench-bar { height: 10px; background: var(--bg-alt); border-radius: 3px; overflow: hidden; }
.model-bench-fill { display: block; height: 100%; background: var(--accent); border-radius: 3px; }
.model-bench-value { text-align: right; font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--text-secondary); }
.model-warnings { margin: 12px 0; padding: 10px 14px; background: rgba(234, 179, 8, 0.08); border: 1px solid #f59e0b; border-radius: 4px; font-size: 0.85rem; }
.model-warnings summary { cursor: pointer; font-weight: 600; color: #b45309; }
:root[data-theme="dark"] .model-warnings { background: rgba(234, 179, 8, 0.12); }
:root[data-theme="dark"] .model-warnings summary { color: #fcd34d; }
.models-table-wrap { overflow-x: auto; margin: 20px 0; }
.models-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.models-table th, .models-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.models-table th { font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); background: var(--bg-alt); }
.models-table td { font-family: 'JetBrains Mono', monospace; }
.models-table td:first-child { font-family: inherit; }
.models-table tr:hover td { background: var(--bg-alt); }
.models-table a { color: var(--accent); text-decoration: none; font-weight: 500; }
.models-table a:hover { text-decoration: underline; }

/* v0.7 (#56): Changelog timeline + inline pricing sparkline + home
   "Recently updated" card. All rendered by llmwiki/changelog_timeline.py.
   Timeline is a vertical list with a connecting line on the left,
   newest entry first, numeric deltas colored by direction. */
.timeline-card { margin: 20px 0; padding: 18px 22px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.timeline-card-title { font-size: 0.88rem; font-weight: 600; margin-bottom: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
.timeline-sparkline { display: flex; align-items: center; gap: 12px; padding: 6px 0 12px; font-size: 0.78rem; }
.timeline-sparkline .price-sparkline { flex: 0 0 auto; }
.changelog-timeline { list-style: none; margin: 0; padding: 0 0 0 18px; position: relative; border-left: 2px solid var(--border); }
.timeline-item { position: relative; padding: 8px 0 8px 16px; font-size: 0.88rem; }
.timeline-date { display: block; font-size: 0.76rem; color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; margin-bottom: 2px; }
.timeline-dot { position: absolute; left: -23px; top: 14px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg-card); }
.timeline-body { display: block; }
.timeline-event { font-weight: 500; }
.timeline-detail { font-size: 0.82rem; color: var(--text-secondary); margin-top: 4px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.timeline-field { font-size: 0.78rem; padding: 1px 6px; background: var(--bg-alt); border-radius: 3px; }
.timeline-delta { display: inline-flex; gap: 6px; align-items: baseline; font-family: 'JetBrains Mono', monospace; }
.timeline-from { color: var(--text-secondary); text-decoration: line-through; text-decoration-thickness: 1px; }
.timeline-to { font-weight: 600; color: var(--text); }
.timeline-arrow { color: var(--text-secondary); }
.timeline-arrow-down { color: #15803d; }
.timeline-arrow-up { color: #b91c1c; }
:root[data-theme="dark"] .timeline-arrow-down { color: #86efac; }
:root[data-theme="dark"] .timeline-arrow-up { color: #fca5a5; }

.recently-updated-section { padding-top: 8px; padding-bottom: 16px; }
.recently-updated-card { margin: 8px 0 24px; padding: 14px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.recently-updated-title { font-size: 0.78rem; margin-bottom: 10px; }
.recently-updated-list { list-style: none; margin: 0; padding: 0; }
.recently-updated-item { display: grid; grid-template-columns: 180px 100px 1fr; gap: 10px; align-items: baseline; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 0.88rem; min-width: 0; }
.recently-updated-item:last-child { border-bottom: none; }
.recently-updated-item > * { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.recently-updated-item a { color: var(--accent); text-decoration: none; font-weight: 500; }
.recently-updated-item a:hover { text-decoration: underline; }
.recently-updated-date { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; }
/* Below 640px the 180+100+1fr grid is too wide — collapse to a single
   column so each item stacks vertically instead of overflowing. */
@media (max-width: 639px) {
  .recently-updated-item { grid-template-columns: 1fr; gap: 2px; padding: 8px 0; }
  .recently-updated-item > * { white-space: normal; }
}

/* Project topics — GitHub-style tag chips on project cards, project
   detail pages, and the home-page grid. Rendered by
   llmwiki/project_topics.py. Tag colors are theme-neutral so the
   same style reads on both project cards (light background) and
   the project hero strip. */
.project-topics { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.topic-chip {
  display: inline-block;
  padding: 3px 10px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  transition: all 0.1s;
}
a.topic-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--bg-card);
}
.topic-chip-more { opacity: 0.7; }
.card-topics { margin-top: 8px; }
.card-topics .topic-chip { font-size: 0.68rem; padding: 2px 8px; }
.project-topics-section { padding-top: 12px; padding-bottom: 8px; }
.project-topics-section .container { padding-top: 16px; padding-bottom: 4px; }
.project-description { margin: 0 0 10px; font-size: 0.92rem; line-height: 1.5; max-width: 680px; }
.project-hero-topics { margin-bottom: 6px; }
.project-homepage { display: inline-block; margin-top: 6px; font-size: 0.82rem; color: var(--accent); text-decoration: none; }
.project-homepage:hover { text-decoration: underline; }

/* v0.7 (#58): Auto-generated vs-comparison pages. Side-by-side table
   with difference highlighting, benchmark bar chart, price delta, and
   a stub summary section the user fills in. */
.vs-section { margin: 24px 0; }
.vs-section h2 { font-size: 1.2rem; font-weight: 600; margin: 0 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.vs-table { width: 100%; border-collapse: collapse; margin: 12px 0 24px; font-size: 0.92rem; }
.vs-table th, .vs-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
.vs-table th:first-child { width: 180px; color: var(--text-secondary); font-weight: 500; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
.vs-table .vs-colhead { font-size: 1rem; background: var(--bg-alt); }
.vs-table .vs-colhead a { color: var(--accent); text-decoration: none; }
.vs-table .vs-colhead a:hover { text-decoration: underline; }
.vs-table td { font-family: 'JetBrains Mono', monospace; }
.vs-table .cell-diff { background: rgba(124, 58, 237, 0.08); font-weight: 600; }
:root[data-theme="dark"] .vs-table .cell-diff { background: rgba(167, 139, 250, 0.12); }
.vs-bench-chart { display: block; max-width: 100%; margin: 8px 0; }
.vs-summary-stub p { padding: 14px 18px; background: var(--bg-alt); border-left: 3px solid var(--accent); border-radius: 0 4px 4px 0; font-style: italic; }
.vs-index-table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.92rem; }
.vs-index-table th, .vs-index-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
.vs-index-table th { font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); background: var(--bg-alt); }
.vs-index-table a { color: var(--accent); text-decoration: none; font-weight: 500; }
.vs-index-table a:hover { text-decoration: underline; }
.vs-index-table tr:hover td { background: var(--bg-alt); }


/* Agent badge — shows which AI agent produced the session */
.agent-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid;
  vertical-align: middle;
}
/* #459: light-theme agent text colors darkened to clear WCAG AA on the
   alpha-blended backgrounds. Originals (codex #059669, copilot #2563EB,
   cursor #D97706, gemini #DC2626) measured 2.86–4.49:1 on the effective
   10%-alpha tint, all under the 4.5:1 small-text threshold. The border
   tint is decorative so its rgba(color, 0.3) value is unchanged. */
.agent-claude   { color: #7C3AED; background: rgba(124,58,237,0.1); border-color: rgba(124,58,237,0.3); }
.agent-codex    { color: #047857; background: rgba(5,150,105,0.1); border-color: rgba(5,150,105,0.3); }
.agent-copilot  { color: #1E40AF; background: rgba(37,99,235,0.1); border-color: rgba(37,99,235,0.3); }
.agent-cursor   { color: #92400E; background: rgba(217,119,6,0.1); border-color: rgba(217,119,6,0.3); }
.agent-gemini   { color: #991B1B; background: rgba(220,38,38,0.1); border-color: rgba(220,38,38,0.3); }
.agent-obsidian { color: #7E22CE; background: rgba(126,34,206,0.1); border-color: rgba(126,34,206,0.3); }
/* Simplification sweep removed the PDF adapter — agent-pdf rule deleted. */
.agent-unknown  { color: #6B7280; background: rgba(107,114,128,0.1); border-color: rgba(107,114,128,0.3); }
:root[data-theme="dark"] .agent-claude   { color: #A78BFA; background: rgba(167,139,250,0.15); border-color: rgba(167,139,250,0.3); }
:root[data-theme="dark"] .agent-codex    { color: #34D399; background: rgba(52,211,153,0.15); border-color: rgba(52,211,153,0.3); }
:root[data-theme="dark"] .agent-copilot  { color: #60A5FA; background: rgba(96,165,250,0.15); border-color: rgba(96,165,250,0.3); }
:root[data-theme="dark"] .agent-cursor   { color: #FBBF24; background: rgba(251,191,36,0.15); border-color: rgba(251,191,36,0.3); }
:root[data-theme="dark"] .agent-gemini   { color: #F87171; background: rgba(248,113,113,0.15); border-color: rgba(248,113,113,0.3); }
.sessions-table .agent-badge { font-size: 0.65rem; padding: 1px 6px; }

/* v0.4: Deep-link icon next to headings */
.content h2 .deep-link, .content h3 .deep-link, .content h4 .deep-link { margin-left: 8px; font-size: 0.8em; opacity: 0; text-decoration: none; transition: opacity 0.15s; }
.content h2:hover .deep-link, .content h3:hover .deep-link, .content h4:hover .deep-link { opacity: 0.7; }
.content h2 .deep-link:hover, .content h3 .deep-link:hover { opacity: 1; text-decoration: none; }

/* v0.4: Mark highlighting in search results */
mark { background: var(--accent-bg); color: var(--accent); padding: 0 2px; border-radius: 3px; font-weight: 500; }

/* Hover-to-preview wikilinks */
.wikilink-preview { position: fixed; max-width: 360px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); padding: 12px 14px; z-index: 250; pointer-events: auto; font-size: 0.85rem; animation: fadeIn 0.1s ease-out; }
.wikilink-preview .wl-title { font-weight: 600; color: var(--text); margin-bottom: 6px; }
.wikilink-preview .wl-body { color: var(--text-secondary); font-size: 0.8rem; line-height: 1.5; max-height: 140px; overflow: hidden; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* Timeline block on sessions index */
.timeline-block { margin-bottom: 16px; padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); }
.timeline-label { font-size: 0.78rem; margin-bottom: 6px; }
.timeline-block svg rect { transition: opacity 0.15s; }
.timeline-block svg rect:hover { opacity: 1 !important; }

/* TOC sidebar (session pages, desktop only, injected by JS) */
.toc-sidebar { position: fixed; top: 88px; left: max(16px, calc((100vw - 1080px) / 2 - 240px)); width: 220px; max-height: calc(100vh - 120px); overflow-y: auto; padding: 12px 14px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.82rem; z-index: 50; display: none; }
.toc-sidebar .toc-title { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); font-weight: 600; margin-bottom: 8px; }
.toc-sidebar ul { list-style: none; padding: 0; margin: 0; }
.toc-sidebar li { margin: 0; }
.toc-sidebar li.toc-h3 { padding-left: 12px; }
.toc-sidebar li.toc-h4 { padding-left: 24px; }
.toc-sidebar .toc-link { display: block; padding: 4px 8px; color: var(--text-secondary); border-left: 2px solid transparent; line-height: 1.4; text-decoration: none; border-radius: 0 4px 4px 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.toc-sidebar .toc-link:hover { color: var(--text); background: var(--bg-alt); text-decoration: none; }
.toc-sidebar .toc-link.active { color: var(--accent); border-left-color: var(--accent); background: var(--bg-alt); font-weight: 500; }
@media (min-width: 1340px) { .toc-sidebar { display: block; } }

/* #460: Hamburger button + slide-down drawer for tablet/mobile.
   Desktop nav-links row hides at <1024 (existing rule), so without
   this drawer Graph / Docs / Changelog were unreachable on mobile. */
.nav-hamburger {
  display: none;  /* shown only when nav-links row is hidden */
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; width: 44px; height: 44px;
  align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-secondary);
  padding: 0; margin-left: auto;
  transition: all 0.15s;
}
.nav-hamburger:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 1023px) { .nav-hamburger { display: inline-flex; } }
/* #v1378-review: forced-colors (Windows High Contrast) mode overrides
   our custom palette with the system one. Without this, the hamburger
   button's border (var(--border)) is ignored and the button visually
   disappears against the nav background. Use system-named colors so
   it stays visible. */
@media (forced-colors: active) {
  .nav-hamburger { border: 2px solid ButtonText; }
  .nav-hamburger:focus-visible { outline: 3px solid Highlight; outline-offset: 2px; }
}
.nav-drawer {
  display: none;
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--bg); border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  flex-direction: column; padding: 8px 16px 12px;
  z-index: 99;
}
.nav-drawer:not([hidden]) { display: flex; }
.nav-drawer-link {
  display: block; padding: 12px 12px;
  color: var(--text); font-size: 0.95rem; font-weight: 500;
  text-decoration: none; border-radius: 6px;
}
.nav-drawer-link:hover, .nav-drawer-link:focus-visible { background: var(--bg-alt); text-decoration: none; }
.nav-drawer-link.active { color: var(--accent); }

/* Mobile bottom navigation */
.mobile-bottom-nav { display: none; }
/* Mobile bottom nav breakpoint at 767 matches the common 768 tablet cutoff
   (Bootstrap/Tailwind). At 767 and below we show the bottom nav; at 768+
   we assume the user has enough horizontal room for the top-nav controls. */
@media (max-width: 767px) {
  .mobile-bottom-nav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--bg-card); border-top: 1px solid var(--border);
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom, 0px));
    justify-content: space-around; align-items: center;
    z-index: 150; backdrop-filter: saturate(1.5) blur(8px);
    -webkit-backdrop-filter: saturate(1.5) blur(8px);
  }
  .mbn-link {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    background: none; border: none; color: var(--text-secondary);
    padding: 4px 10px; font-size: 0.66rem; font-weight: 500;
    text-decoration: none; cursor: pointer; font-family: inherit;
    min-width: 52px; transition: color 0.15s;
  }
  .mbn-link svg { width: 20px; height: 20px; stroke-width: 2; }
  .mbn-link:hover, .mbn-link:active { color: var(--accent); text-decoration: none; }
  .mbn-link.active { color: var(--accent); }
  body { padding-bottom: 76px; }
  .nav-links .nav-search-btn, .nav-links .theme-toggle { display: none; }
}

/* Print */
@media print {
  :root {
    --bg: #fff; --bg-alt: #fff; --bg-card: #fff; --bg-code: #f5f5f5;
    --text: #000; --text-secondary: #333; --text-muted: #555;
    --border: #ccc; --accent: #000;
  }
  /* #ui-l1 (#578): keep breadcrumbs in print so a printed page
     retains its location context. #ui-l3 (#579): keep activity
     heatmap + token charts + related-pages too — useful when an
     offline reader needs to follow a hardcopy. Removed from the
     hide-list. */
  .nav, .footer, .palette, .help-dialog, .session-actions, .filter-bar,
  .progress-bar, .nav-search-btn, .theme-toggle, .copy-code-btn,
  .wikilink-preview, .timeline-block, .toc-sidebar, .mobile-bottom-nav,
  .deep-link,
  .meta-tools { display: none !important; }
  /* Breadcrumbs + heatmap + charts kept on print, but rendered
     monochrome to save ink. */
  .breadcrumbs { color: #333; }
  .activity-heatmap { filter: grayscale(100%); }
  .related-pages { border-top: 1px solid #ccc; padding-top: 8pt; margin-top: 12pt; page-break-inside: avoid; }
  body { background: #fff; color: #000; font-size: 11pt; padding-bottom: 0; }
  .hero { padding: 12px 0 8px; background: #fff; border: none; }
  .hero h1 { font-size: 18pt; color: #000; }
  .hero .hero-sub { color: #333; font-size: 10pt; }
  .container { max-width: 100%; padding: 0 12pt; }
  .content { font-size: 11pt; }
  .content h1, .content h2, .content h3, .content h4 { page-break-after: avoid; break-after: avoid; color: #000; }
  .content pre, .content blockquote, .content table, .content img, .content figure { page-break-inside: avoid; break-inside: avoid; }
  .content pre { border: 1px solid #ccc; background: #f8f8f8; font-size: 9pt; }
  .content code { font-size: 9pt; }
  .content a { color: #000; text-decoration: underline; }
  .content a[href^="http"]:after { content: " (" attr(href) ")"; font-size: 8pt; color: #555; word-break: break-all; }
  .content img, .content svg { max-width: 100%; height: auto; }
  article { max-width: 100% !important; }
  .section { padding: 0 !important; }
}

/* --- Reader shell (v1.2.0 · #112) --- */
.reader-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 280px;
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px 24px;
  align-items: start;
}
.reader-shell__drawer,
.reader-shell__rail {
  position: sticky;
  top: 24px;
  align-self: start;
  background: var(--bg-alt);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px;
  font-size: 0.85rem;
}
.reader-shell__drawer h2,
.reader-shell__rail h2 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 10px 0;
}
.reader-shell__drawer ul,
.reader-shell__rail ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.reader-shell__drawer li,
.reader-shell__rail li { padding: 4px 0; }

.reader-shell__drawer-empty {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin: 0;
}

.reader-shell__header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 24px;
}
.reader-shell__crumbs {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.reader-shell__crumbs .sep { margin: 0 6px; }
.reader-shell__subtitle {
  color: var(--text-muted);
  margin-top: 4px;
}

.reader-shell__utility {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.reader-shell__util-btn {
  padding: 4px 10px;
  font-size: 0.78rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: border-color 0.15s;
}
.reader-shell__util-btn:hover { border-color: var(--accent); }

.reader-shell__body { line-height: 1.7; }

.reader-shell__infobox dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  font-size: 0.82rem;
}
.reader-shell__infobox-row { display: contents; }
.reader-shell__infobox dt { color: var(--text-muted); }
.reader-shell__infobox dd { margin: 0; }

.reader-shell__revisions,
.reader-shell__see-also,
.reader-shell__references {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

@media (max-width: 1100px) {
  .reader-shell {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
  .reader-shell__drawer { display: none; }
}
@media (max-width: 760px) {
  .reader-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
  .reader-shell__rail {
    position: static;
    margin-top: 24px;
  }
}


/* --- Docs shell (v1.2.0 · #265) --- */
.docs-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 32px 128px;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
  letter-spacing: -0.01em;
}

.docs-shell > h1,
.docs-shell > header h1 {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 48px 0 20px;
  color: var(--text);
}

.docs-shell h2 {
  font-size: 1.75rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 72px 0 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text);
}

.docs-shell h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 48px;
}

.docs-shell h3 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 48px 0 16px;
  color: var(--text);
}

.docs-shell h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--text);
}

.docs-shell p,
.docs-shell ul,
.docs-shell ol {
  margin: 0 0 20px;
}

.docs-shell ul,
.docs-shell ol {
  padding-left: 1.6em;
}

.docs-shell li {
  margin: 8px 0;
}

.docs-shell li > p {
  margin: 0 0 8px;
}

/* Inline code */
.docs-shell p code,
.docs-shell li code,
.docs-shell td code,
.docs-shell th code {
  font-family: var(--mono);
  font-size: 0.875em;
  padding: 2px 6px;
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text);
  letter-spacing: 0;
}

/* Code blocks */
.docs-shell pre {
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.65;
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 28px 0;
  overflow-x: auto;
  color: var(--text);
}

.docs-shell pre code {
  font-family: inherit;
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* Links */
.docs-shell a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent);
  transition: text-decoration-color 0.12s ease;
}

.docs-shell a:hover {
  text-decoration-color: var(--accent);
}

/* Blockquote — used for the "Trusted" / "Warning" / "Result" callouts */
.docs-shell blockquote {
  margin: 28px 0;
  padding: 16px 24px;
  background: var(--accent-bg);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  color: var(--text);
}

.docs-shell blockquote p {
  margin: 0;
}

/* Horizontal rules — editorial dividers */
.docs-shell hr {
  margin: 72px auto;
  width: 56px;
  height: 1px;
  background: var(--border);
  border: none;
}

/* Tables — clean editorial look */
.docs-shell table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 0.96rem;
}

.docs-shell thead th {
  text-align: left;
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.docs-shell tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  color: var(--text);
}

.docs-shell tbody tr:last-child td {
  border-bottom: none;
}

/* Frontmatter strip — "Time: 5 min · You'll need: …" stacked below the
   title as a hairline rule with one row per field. Grid keeps labels in
   a narrow left column so values align across fields + wrap cleanly. */
.docs-shell .docs-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 20px;
  padding: 20px 0;
  margin: 0 0 56px;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.docs-shell .docs-meta dt {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  align-self: start;
  padding-top: 3px;
}

.docs-shell .docs-meta dd {
  margin: 0;
  line-height: 1.55;
  color: var(--text);
}

.docs-shell .docs-meta code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 1px 6px;
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

.docs-shell .docs-meta a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* Tutorial lead-in — the first paragraph after the meta strip. The
   heading after it gives just enough rhythm; we lift the paragraph to
   a slightly larger size + calmer color so the "Why this matters"
   section header reads as a proper divider. */
.docs-shell > .docs-meta + hr + h2 + p,
.docs-shell > h1 + p {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* Emphasis for bold inline — a touch darker than regular body */
.docs-shell strong {
  font-weight: 600;
  color: var(--text);
}

/* Responsive */
@media (max-width: 760px) {
  .docs-shell {
    padding: 40px 20px 96px;
    font-size: 1rem;
    line-height: 1.7;
  }
  .docs-shell > h1 {
    font-size: 2.25rem;
  }
  .docs-shell h2 {
    font-size: 1.4rem;
    margin-top: 56px;
  }
  .docs-shell pre {
    padding: 16px 18px;
    border-radius: 6px;
  }
  .docs-shell table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* Dark mode — inherit all tokens, no overrides needed; just nudge blockquote */
:root[data-theme="dark"] .docs-shell blockquote {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .docs-shell blockquote {
    background: color-mix(in srgb, var(--accent) 10%, transparent);
  }
}

/* Hub index hero — applied to docs/index.md h1 only. Stays a full step
   bigger than tutorial h1 (2.75 rem) so the hub is unmistakably the
   landing page. */
.docs-shell.docs-hub > h1 {
  font-size: 3.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.docs-shell.docs-hub > h1 + p {
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 72px;
}

/* Passthrough pages (reference docs, adapter guides, deploy guides)
   get a gentler wrapper — same column width + typography, but the
   meta-strip / hub-hero accents don't apply. */
.docs-shell.docs-passthrough > h1 {
  font-size: 2.4rem;
}

@media (max-width: 760px) {
  .docs-shell.docs-hub > h1 {
    font-size: 2.5rem;
  }
  .docs-shell.docs-hub > h1 + p {
    font-size: 1.0625rem;
    margin-bottom: 48px;
  }
}

/* #282: tutorial table of contents + prev/next footer + edit-on-GitHub.
   Scoped under `.docs-shell`. */

.docs-shell .tutorial-toc {
  margin: 24px 0 40px 0;
  padding: 14px 18px;
  background: var(--bg-alt);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: 0.92rem;
}
.docs-shell .tutorial-toc summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
}
.docs-shell .tutorial-toc ul {
  list-style: none;
  padding: 0;
  margin: 10px 0 0 0;
}
.docs-shell .tutorial-toc li {
  padding: 2px 0;
}
.docs-shell .tutorial-toc a {
  color: var(--text);
  text-decoration: none;
}
.docs-shell .tutorial-toc a:hover {
  text-decoration: underline;
}

/* #387 U9: on the docs hub specifically, make the TOC sticky on desktop
   so a user scrolling through 80+ enumerated editorial pages always has
   in-page navigation in view. Falls back to the inline TOC at narrow
   viewports. */
@media (min-width: 1024px) {
  .docs-shell.docs-hub .tutorial-toc {
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    margin: 0 0 24px 0;
  }
  .docs-shell.docs-hub .tutorial-toc summary {
    /* On the hub, the TOC is the primary nav — surface it open by default
       (the <details open> already does this) and use a clearer label. */
    color: var(--accent);
  }
}

.docs-shell .tutorial-footer-rule {
  margin-top: 48px;
  border: 0;
  border-top: 1px solid var(--border-subtle);
}
.docs-shell .tutorial-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.docs-shell .tutorial-footer .prev-tut,
.docs-shell .tutorial-footer .next-tut {
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}
.docs-shell .tutorial-footer .prev-tut:hover,
.docs-shell .tutorial-footer .next-tut:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.docs-shell .tutorial-footer .next-tut {
  text-align: right;
}
.docs-shell .tutorial-footer .placeholder {
  visibility: hidden;
}
.docs-shell .tutorial-footer .tut-nav-dir {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.docs-shell .tutorial-footer .tut-nav-title {
  font-weight: 600;
  margin-top: 4px;
}

.docs-shell .tutorial-edit {
  text-align: center;
  margin: 20px 0 8px 0;
  font-size: 0.85rem;
}
.docs-shell .tutorial-edit a {
  color: var(--text-muted);
  text-decoration: none;
}
.docs-shell .tutorial-edit a:hover {
  color: var(--accent);
  text-decoration: underline;
}

@media (max-width: 760px) {
  .docs-shell .tutorial-footer {
    grid-template-columns: 1fr;
  }
}