/* ==========================================================================
   Metric Vault Help Center — portal stylesheet
   --------------------------------------------------------------------------
   Copied verbatim into help/assets/kb.css by tests/kb-build.mjs.
   Colour values mirror css/tokens.css so the Help Center reads as the same
   product. Light-first with dark opt-in, matching the tokens.css convention.
   ========================================================================== */

:root {
  --kb-brand: #7c5cfc;
  --kb-brand-strong: #6a48f0;
  --kb-brand-soft: #f1edff;
  --kb-magenta: #d946a8;
  --kb-green: #14b87f;
  --kb-amber: #f59e0b;
  --kb-red: #f56565;
  --kb-cyan: #06d6f5;

  --kb-bg: #ffffff;
  --kb-bg-2: #f7f8fb;
  --kb-panel: #ffffff;
  --kb-panel-2: #fbfbfe;
  --kb-text: #14161d;
  --kb-text-2: #454a58;
  --kb-text-3: #6b7180;
  --kb-muted: #8a90a0;
  --kb-border: #e5e7ef;
  --kb-border-strong: #d3d7e3;

  --kb-radius-xs: 6px;
  --kb-radius-sm: 9px;
  --kb-radius: 12px;
  --kb-radius-lg: 16px;
  --kb-radius-xl: 20px;
  --kb-radius-pill: 999px;

  --kb-shadow-sm: 0 1px 2px rgba(20, 22, 29, .06), 0 1px 3px rgba(20, 22, 29, .05);
  --kb-shadow-md: 0 4px 12px rgba(20, 22, 29, .08), 0 2px 4px rgba(20, 22, 29, .04);
  --kb-shadow-lg: 0 16px 48px rgba(20, 22, 29, .14), 0 4px 12px rgba(20, 22, 29, .06);

  --kb-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --kb-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --kb-topbar-h: 60px;
  --kb-sidebar-w: 268px;
  --kb-max: 1440px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --kb-bg: #0c0d12;
    --kb-bg-2: #101219;
    --kb-panel: #14161f;
    --kb-panel-2: #171a24;
    --kb-text: #f2f3f7;
    --kb-text-2: #c3c7d4;
    --kb-text-3: #969cad;
    --kb-muted: #7b8194;
    --kb-border: #252838;
    --kb-border-strong: #333749;
    --kb-brand-soft: #1d1a33;
    --kb-shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
    --kb-shadow-md: 0 4px 14px rgba(0, 0, 0, .55);
    --kb-shadow-lg: 0 18px 52px rgba(0, 0, 0, .62);
  }
}

:root[data-theme="dark"] {
  --kb-bg: #0c0d12;
  --kb-bg-2: #101219;
  --kb-panel: #14161f;
  --kb-panel-2: #171a24;
  --kb-text: #f2f3f7;
  --kb-text-2: #c3c7d4;
  --kb-text-3: #969cad;
  --kb-muted: #7b8194;
  --kb-border: #252838;
  --kb-border-strong: #333749;
  --kb-brand-soft: #1d1a33;
  --kb-shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --kb-shadow-md: 0 4px 14px rgba(0, 0, 0, .55);
  --kb-shadow-lg: 0 18px 52px rgba(0, 0, 0, .62);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--kb-topbar-h) + 16px); }

body {
  margin: 0;
  font-family: var(--kb-font);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--kb-text);
  background: var(--kb-bg-2);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--kb-brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.kb-skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--kb-brand); color: #fff; padding: 10px 16px; border-radius: 0 0 var(--kb-radius) 0;
}
.kb-skip:focus { left: 0; }

.kb-icon { width: 18px; height: 18px; flex: none; }

/* ---------- Top bar ---------- */
.kb-topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 16px;
  height: var(--kb-topbar-h);
  padding: 0 20px;
  background: color-mix(in srgb, var(--kb-panel) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--kb-border);
}

.kb-burger {
  display: none; align-items: center; justify-content: center;
  width: 36px; height: 36px; padding: 0;
  background: none; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-sm);
  color: var(--kb-text-2); cursor: pointer;
}
.kb-burger svg { width: 20px; height: 20px; }

.kb-brand { display: flex; align-items: center; gap: 10px; color: var(--kb-text); flex: none; }
.kb-brand:hover { text-decoration: none; }
.kb-brand-mark {
  width: 26px; height: 26px;
  background: center / contain no-repeat url("https://d2ol7oe51mr4n9.cloudfront.net/user_367VQ7rSCd5FVIT6K4HTOMQeSRC/3c014c63-a962-4626-b7a8-f033942a99fd.png");
}
.kb-brand-name { display: flex; flex-direction: column; line-height: 1.15; font-weight: 700; font-size: 14.5px; letter-spacing: -.01em; }
.kb-brand-name em { font-style: normal; font-weight: 500; font-size: 11px; color: var(--kb-text-3); letter-spacing: .02em; }

.kb-search { position: relative; flex: 1; max-width: 560px; margin: 0 auto; }
.kb-search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--kb-muted); pointer-events: none; }
.kb-search input {
  width: 100%; height: 38px;
  padding: 0 44px 0 38px;
  font: inherit; font-size: 14px;
  color: var(--kb-text);
  background: var(--kb-bg-2);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-pill);
  outline: none;
}
.kb-search input:focus { border-color: var(--kb-brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--kb-brand) 18%, transparent); background: var(--kb-panel); }
.kb-search kbd {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  font-family: var(--kb-mono); font-size: 11px; color: var(--kb-muted);
  border: 1px solid var(--kb-border); border-radius: var(--kb-radius-xs);
  padding: 1px 6px; background: var(--kb-panel);
}

.kb-results {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  max-height: 68vh; overflow-y: auto;
  background: var(--kb-panel);
  border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg);
  box-shadow: var(--kb-shadow-lg);
  padding: 6px;
  z-index: 50;
}
.kb-results[hidden] { display: none; }
.kb-result {
  display: block; padding: 9px 12px; border-radius: var(--kb-radius-sm); color: var(--kb-text);
}
.kb-result:hover, .kb-result.sel { background: var(--kb-brand-soft); text-decoration: none; }
.kb-result strong { display: block; font-size: 14px; font-weight: 600; }
.kb-result span { display: block; font-size: 12.5px; color: var(--kb-text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kb-result em { font-style: normal; font-size: 11px; color: var(--kb-brand); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.kb-result mark { background: color-mix(in srgb, var(--kb-brand) 22%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; }
.kb-result-empty { padding: 18px 14px; color: var(--kb-text-3); font-size: 13.5px; text-align: center; }

.kb-topbar-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.kb-topbar-link {
  font-size: 13.5px; font-weight: 600; color: var(--kb-text-2);
  padding: 7px 14px; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-pill);
}
.kb-topbar-link:hover { text-decoration: none; border-color: var(--kb-brand); color: var(--kb-brand); }
.kb-theme {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: none; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-sm);
  color: var(--kb-text-2); cursor: pointer; padding: 0;
}
.kb-theme svg { width: 17px; height: 17px; }
.kb-moon { display: none; }
:root[data-theme="dark"] .kb-sun, html.kb-dark .kb-sun { display: none; }
:root[data-theme="dark"] .kb-moon, html.kb-dark .kb-moon { display: block; }

/* ---------- Shell ---------- */
.kb-shell { display: flex; max-width: var(--kb-max); margin: 0 auto; align-items: flex-start; }

.kb-sidebar {
  position: sticky; top: var(--kb-topbar-h);
  width: var(--kb-sidebar-w); flex: none;
  height: calc(100vh - var(--kb-topbar-h));
  overflow-y: auto;
  border-right: 1px solid var(--kb-border);
  background: var(--kb-bg-2);
}
.kb-sidebar-inner { padding: 20px 12px 40px; }
.kb-side-home, .kb-sidebar a {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: var(--kb-radius-sm);
  font-size: 13.8px; font-weight: 500; color: var(--kb-text-2);
}
.kb-sidebar a:hover { background: var(--kb-panel); color: var(--kb-text); text-decoration: none; }
.kb-sidebar a.active { background: var(--kb-brand-soft); color: var(--kb-brand-strong); font-weight: 650; }
.kb-sidebar a.active .kb-icon { color: var(--kb-brand); }
.kb-side-label {
  padding: 16px 12px 6px; font-size: 10.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em; color: var(--kb-muted);
}
.kb-tag-internal {
  margin-left: auto; font-style: normal; font-size: 9.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .05em;
  color: var(--kb-amber); border: 1px solid color-mix(in srgb, var(--kb-amber) 40%, transparent);
  border-radius: var(--kb-radius-xs); padding: 1px 5px;
}

.kb-main { flex: 1; min-width: 0; padding: 28px 36px 80px; }

/* ---------- Breadcrumbs ---------- */
.kb-crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0 0 20px; padding: 0; font-size: 13px; }
.kb-crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--kb-muted); }
.kb-crumbs a { color: var(--kb-text-3); }
.kb-crumbs span { color: var(--kb-text-2); font-weight: 600; }

/* ---------- Home ---------- */
.kb-hero {
  padding: 52px 32px 44px; margin-bottom: 34px; text-align: center;
  background: linear-gradient(150deg, color-mix(in srgb, var(--kb-brand) 10%, var(--kb-panel)), var(--kb-panel) 62%);
  border: 1px solid var(--kb-border); border-radius: var(--kb-radius-xl);
}
.kb-hero h1 { margin: 0 0 8px; font-size: 34px; letter-spacing: -.025em; }
.kb-hero > p { margin: 0 auto 26px; max-width: 620px; color: var(--kb-text-3); font-size: 16px; }
.kb-hero-search { position: relative; max-width: 560px; margin: 0 auto; }
.kb-hero-search input {
  width: 100%; height: 48px; padding: 0 18px 0 44px;
  font: inherit; font-size: 15px; color: var(--kb-text);
  background: var(--kb-panel); border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-pill); box-shadow: var(--kb-shadow-sm); outline: none;
}
.kb-hero-search input:focus { border-color: var(--kb-brand); box-shadow: 0 0 0 4px color-mix(in srgb, var(--kb-brand) 16%, transparent); }
.kb-hero-search .kb-search-icon { left: 16px; }
.kb-quick { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 20px; }
.kb-quick a {
  font-size: 13px; font-weight: 550; color: var(--kb-text-2);
  background: var(--kb-panel); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-pill); padding: 6px 14px;
}
.kb-quick a:hover { border-color: var(--kb-brand); color: var(--kb-brand); text-decoration: none; }

.kb-section { margin-bottom: 38px; }
.kb-section > h2 { font-size: 19px; letter-spacing: -.015em; margin: 0 0 16px; }

.kb-cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.kb-cat {
  display: flex; gap: 14px; padding: 18px;
  background: var(--kb-panel); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-lg); color: var(--kb-text);
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.kb-cat:hover { text-decoration: none; border-color: color-mix(in srgb, var(--kb-brand) 45%, var(--kb-border)); box-shadow: var(--kb-shadow-md); transform: translateY(-1px); }
.kb-cat-icon {
  display: flex; align-items: center; justify-content: center; flex: none;
  width: 40px; height: 40px; border-radius: var(--kb-radius);
  background: var(--kb-brand-soft); color: var(--kb-brand);
}
.kb-cat-icon.lg { width: 52px; height: 52px; border-radius: var(--kb-radius-lg); }
.kb-cat-icon.lg .kb-icon { width: 24px; height: 24px; }
.kb-cat-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.kb-cat-title { font-weight: 650; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.kb-cat-blurb { font-size: 13.2px; color: var(--kb-text-3); line-height: 1.5; }
.kb-cat-count { font-size: 12px; color: var(--kb-muted); margin-top: 4px; }

.kb-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.kb-list { display: flex; flex-direction: column; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-lg); overflow: hidden; background: var(--kb-panel); }
.kb-list a { padding: 12px 16px; border-bottom: 1px solid var(--kb-border); color: var(--kb-text); }
.kb-list a:last-child { border-bottom: 0; }
.kb-list a:hover { background: var(--kb-bg-2); text-decoration: none; }
.kb-list strong { display: block; font-size: 14px; font-weight: 600; }
.kb-list span { display: block; font-size: 12.5px; color: var(--kb-text-3); }

.kb-roles { display: flex; flex-wrap: wrap; gap: 8px; }
.kb-role {
  font: inherit; font-size: 13.5px; font-weight: 600; color: var(--kb-text-2);
  background: var(--kb-panel); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-pill); padding: 8px 16px; cursor: pointer;
  display: flex; align-items: center; gap: 8px;
}
.kb-role:hover, .kb-role.on { border-color: var(--kb-brand); color: var(--kb-brand); }
.kb-role em { font-style: normal; font-size: 11px; color: var(--kb-muted); }
.kb-role-results { margin-top: 16px; }

/* ---------- Category page ---------- */
.kb-cat-head { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 34px; }
.kb-cat-head h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: -.02em; }
.kb-cat-head p { margin: 0; color: var(--kb-text-3); }
.kb-cat-head .kb-cat-count { display: block; margin-top: 8px; }

.kb-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.kb-card {
  display: flex; flex-direction: column; gap: 5px; padding: 15px 17px;
  background: var(--kb-panel); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius); color: var(--kb-text);
  transition: border-color .15s, box-shadow .15s;
}
.kb-card:hover { text-decoration: none; border-color: color-mix(in srgb, var(--kb-brand) 45%, var(--kb-border)); box-shadow: var(--kb-shadow-sm); }
.kb-card-title { font-weight: 620; font-size: 14.5px; }
.kb-card-sum { font-size: 12.8px; color: var(--kb-text-3); line-height: 1.5; }
.kb-card-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.kb-card-meta em {
  font-style: normal; font-size: 10.5px; font-weight: 600; color: var(--kb-muted);
  border: 1px solid var(--kb-border); border-radius: var(--kb-radius-xs); padding: 1px 6px;
}

.kb-lvl-beginner { color: var(--kb-green) !important; border-color: color-mix(in srgb, var(--kb-green) 35%, transparent) !important; }
.kb-lvl-intermediate { color: var(--kb-amber) !important; border-color: color-mix(in srgb, var(--kb-amber) 40%, transparent) !important; }
.kb-lvl-advanced { color: var(--kb-magenta) !important; border-color: color-mix(in srgb, var(--kb-magenta) 40%, transparent) !important; }

/* ---------- Article ---------- */
.kb-article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 44px; align-items: start; }
.kb-article { max-width: 860px; min-width: 0; }
.kb-article-head { padding-bottom: 22px; margin-bottom: 26px; border-bottom: 1px solid var(--kb-border); }
.kb-article-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.kb-chip {
  font-size: 11px; font-weight: 600; color: var(--kb-text-3);
  background: var(--kb-panel); border: 1px solid var(--kb-border);
  border-radius: var(--kb-radius-pill); padding: 2px 10px;
}
.kb-chip-aud { color: var(--kb-brand); border-color: color-mix(in srgb, var(--kb-brand) 32%, transparent); }
.kb-article h1 { margin: 0 0 10px; font-size: 31px; line-height: 1.2; letter-spacing: -.025em; }
.kb-lede { margin: 0; font-size: 17px; color: var(--kb-text-2); line-height: 1.55; }
.kb-updated { margin: 12px 0 0; font-size: 12.5px; color: var(--kb-muted); }

.kb-article h2 {
  margin: 40px 0 14px; font-size: 22px; letter-spacing: -.02em;
  padding-top: 8px; border-top: 1px solid var(--kb-border);
}
.kb-article h3 { margin: 28px 0 10px; font-size: 17px; letter-spacing: -.01em; }
.kb-article h4 { margin: 22px 0 8px; font-size: 15px; color: var(--kb-text-2); }
.kb-article p { margin: 0 0 15px; color: var(--kb-text-2); }
.kb-article strong { color: var(--kb-text); font-weight: 640; }
.kb-article ul, .kb-article ol { margin: 0 0 16px; padding-left: 22px; color: var(--kb-text-2); }
.kb-article li { margin-bottom: 6px; }
.kb-article li::marker { color: var(--kb-muted); }
.kb-sublist { margin: 6px 0 0; }

.kb-anchor { margin-left: 8px; color: var(--kb-border-strong); font-weight: 400; opacity: 0; transition: opacity .12s; }
.kb-article h2:hover .kb-anchor, .kb-article h3:hover .kb-anchor { opacity: 1; }
.kb-anchor:hover { text-decoration: none; color: var(--kb-brand); }

.kb-article code {
  font-family: var(--kb-mono); font-size: .875em;
  background: var(--kb-brand-soft); color: var(--kb-brand-strong);
  border-radius: var(--kb-radius-xs); padding: 1.5px 5px;
}
:root[data-theme="dark"] .kb-article code { color: #b9a6ff; }

.kb-code { margin: 0 0 18px; border: 1px solid var(--kb-border); border-radius: var(--kb-radius); overflow: hidden; background: var(--kb-panel-2); }
.kb-code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; border-bottom: 1px solid var(--kb-border);
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--kb-muted);
}
.kb-copy {
  font: inherit; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
  background: none; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-xs);
  color: var(--kb-text-3); padding: 2px 9px; cursor: pointer;
}
.kb-copy:hover { border-color: var(--kb-brand); color: var(--kb-brand); }
.kb-code pre { margin: 0; padding: 14px 16px; overflow-x: auto; }
.kb-code code { font-family: var(--kb-mono); font-size: 12.8px; line-height: 1.62; background: none; color: var(--kb-text); padding: 0; }

.kb-table-wrap { overflow-x: auto; margin: 0 0 20px; border: 1px solid var(--kb-border); border-radius: var(--kb-radius); background: var(--kb-panel); }
.kb-table-wrap table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.kb-table-wrap th {
  text-align: left; padding: 10px 14px; white-space: nowrap;
  background: var(--kb-bg-2); border-bottom: 1px solid var(--kb-border);
  font-weight: 640; font-size: 12.5px; color: var(--kb-text-2);
}
.kb-table-wrap td { padding: 10px 14px; border-bottom: 1px solid var(--kb-border); color: var(--kb-text-2); vertical-align: top; }
.kb-table-wrap tr:last-child td { border-bottom: 0; }
.kb-table-wrap tbody tr:hover { background: var(--kb-bg-2); }

.kb-callout {
  display: flex; gap: 12px; margin: 0 0 20px; padding: 14px 16px;
  border: 1px solid var(--kb-border); border-radius: var(--kb-radius);
  background: var(--kb-panel);
}
.kb-callout-label {
  flex: none; font-size: 10.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; padding-top: 3px; color: var(--kb-brand); min-width: 62px;
}
.kb-callout-body > :last-child { margin-bottom: 0; }
.kb-callout-body p { font-size: 14px; }
.kb-callout-warning, .kb-callout-caution { border-color: color-mix(in srgb, var(--kb-amber) 38%, transparent); background: color-mix(in srgb, var(--kb-amber) 7%, var(--kb-panel)); }
.kb-callout-warning .kb-callout-label, .kb-callout-caution .kb-callout-label { color: var(--kb-amber); }
.kb-callout-important { border-color: color-mix(in srgb, var(--kb-red) 34%, transparent); background: color-mix(in srgb, var(--kb-red) 6%, var(--kb-panel)); }
.kb-callout-important .kb-callout-label { color: var(--kb-red); }
.kb-callout-tip { border-color: color-mix(in srgb, var(--kb-green) 34%, transparent); background: color-mix(in srgb, var(--kb-green) 6%, var(--kb-panel)); }
.kb-callout-tip .kb-callout-label { color: var(--kb-green); }
.kb-callout-example { border-color: color-mix(in srgb, var(--kb-cyan) 34%, transparent); background: color-mix(in srgb, var(--kb-cyan) 6%, var(--kb-panel)); }
.kb-callout-example .kb-callout-label { color: var(--kb-cyan); }

.kb-shot { margin: 0 0 20px; }
.kb-shot-box {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  min-height: 180px; border: 1px dashed var(--kb-border-strong); border-radius: var(--kb-radius);
  background: var(--kb-panel-2); color: var(--kb-muted);
}
.kb-shot-box svg { width: 30px; height: 30px; stroke: currentColor; fill: none; stroke-width: 1.4; }
.kb-shot-box span { font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; }
.kb-shot figcaption, .kb-fig figcaption { margin-top: 8px; font-size: 12.5px; color: var(--kb-text-3); text-align: center; }
.kb-fig { margin: 0 0 20px; }
.kb-fig img { max-width: 100%; border: 1px solid var(--kb-border); border-radius: var(--kb-radius); display: block; }

.kb-badlink { color: var(--kb-red); text-decoration: underline dotted; }
.kb-xlink { font-weight: 550; }

.kb-article hr { border: 0; border-top: 1px solid var(--kb-border); margin: 30px 0; }

.kb-related, .kb-seealso { margin-top: 44px; }
.kb-related h2, .kb-seealso h2 { border-top: 1px solid var(--kb-border); padding-top: 20px; }
.kb-seealso ul { list-style: none; padding: 0; }
.kb-seealso li { margin-bottom: 6px; }

.kb-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 40px; }
.kb-pager a {
  display: flex; flex-direction: column; gap: 3px; padding: 14px 16px;
  border: 1px solid var(--kb-border); border-radius: var(--kb-radius);
  background: var(--kb-panel); color: var(--kb-text);
}
.kb-pager a:hover { text-decoration: none; border-color: var(--kb-brand); }
.kb-pager em { font-style: normal; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--kb-muted); }
.kb-pager-next { text-align: right; }

.kb-feedback { margin-top: 44px; padding: 22px; text-align: center; border: 1px solid var(--kb-border); border-radius: var(--kb-radius-lg); background: var(--kb-panel); }
.kb-feedback h2 { margin: 0 0 12px; font-size: 15px; border: 0; padding: 0; }
.kb-feedback-btns { display: flex; gap: 8px; justify-content: center; }
.kb-feedback-btns button {
  font: inherit; font-size: 13.5px; font-weight: 600; padding: 7px 22px; cursor: pointer;
  background: var(--kb-bg-2); border: 1px solid var(--kb-border); border-radius: var(--kb-radius-pill); color: var(--kb-text-2);
}
.kb-feedback-btns button:hover { border-color: var(--kb-brand); color: var(--kb-brand); }
.kb-feedback-note { margin: 12px 0 0; font-size: 13px; color: var(--kb-green); }

/* ---------- TOC ---------- */
.kb-toc { position: sticky; top: calc(var(--kb-topbar-h) + 24px); }
.kb-toc-inner { max-height: calc(100vh - var(--kb-topbar-h) - 60px); overflow-y: auto; }
.kb-toc-label { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--kb-muted); margin-bottom: 10px; }
.kb-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--kb-border); }
.kb-toc li a { display: block; padding: 4px 0 4px 14px; margin-left: -1px; border-left: 2px solid transparent; font-size: 12.8px; color: var(--kb-text-3); line-height: 1.45; }
.kb-toc li a:hover { color: var(--kb-text); text-decoration: none; }
.kb-toc li a.on { color: var(--kb-brand); border-left-color: var(--kb-brand); font-weight: 600; }
.kb-toc-l3 a { padding-left: 26px; font-size: 12.2px; }

/* ---------- Footer ---------- */
.kb-footer { border-top: 1px solid var(--kb-border); background: var(--kb-panel); margin-top: 40px; }
.kb-footer-inner {
  max-width: var(--kb-max); margin: 0 auto; padding: 20px 36px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 12.5px; color: var(--kb-text-3);
}
.kb-footer-sep { color: var(--kb-border-strong); }
.kb-footer-grow { flex: 1; }
.kb-footer-note { color: var(--kb-muted); }
.kb-footer-note code { font-family: var(--kb-mono); font-size: 11.5px; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .kb-article-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .kb-toc { display: none; }
}
@media (max-width: 900px) {
  .kb-burger { display: flex; }
  .kb-sidebar {
    position: fixed; top: var(--kb-topbar-h); left: 0; bottom: 0; z-index: 39;
    transform: translateX(-100%); transition: transform .2s ease;
    box-shadow: var(--kb-shadow-lg);
  }
  .kb-sidebar.open { transform: translateX(0); }
  .kb-main { padding: 22px 20px 60px; }
  .kb-two-col { grid-template-columns: 1fr; }
  .kb-search kbd { display: none; }
  .kb-topbar-link { display: none; }
  .kb-hero { padding: 38px 20px 34px; }
  .kb-hero h1 { font-size: 27px; }
  .kb-article h1 { font-size: 25px; }
  .kb-pager { grid-template-columns: 1fr; }
  .kb-footer-inner { padding: 18px 20px; }
  .kb-footer-note { flex-basis: 100%; }
}
@media (max-width: 620px) {
  .kb-brand-name { display: none; }
  .kb-cats, .kb-cards { grid-template-columns: 1fr; }
}

@media print {
  .kb-topbar, .kb-sidebar, .kb-toc, .kb-pager, .kb-feedback, .kb-footer, .kb-crumbs { display: none !important; }
  .kb-main { padding: 0; }
  .kb-article { max-width: none; }
  body { background: #fff; }
}

/* ---------- Graph-edge blocks (prerequisites, under-the-hood, type chip) ---------- */
.kb-chip-type { color: var(--kb-text-2); background: var(--kb-bg-2); border-color: var(--kb-border-strong); }

.kb-prereq {
  display: flex; gap: 14px; margin: 0 0 26px; padding: 14px 16px;
  border: 1px solid var(--kb-border); border-left: 3px solid var(--kb-brand);
  border-radius: var(--kb-radius); background: var(--kb-panel);
}
.kb-prereq-label {
  flex: none; min-width: 68px; padding-top: 2px;
  font-size: 10.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--kb-brand);
}
.kb-prereq ul { margin: 0; padding-left: 18px; font-size: 13.8px; }
.kb-prereq li { margin-bottom: 4px; color: var(--kb-text-3); }
.kb-prereq li a { font-weight: 600; }

.kb-under { margin-top: 44px; }
.kb-under h2 { border-top: 1px solid var(--kb-border); padding-top: 20px; }
.kb-under ul { list-style: none; padding: 0; }
.kb-under li { margin-bottom: 6px; color: var(--kb-text-3); font-size: 14px; }
.kb-under li a { font-weight: 600; }

/* The article header already draws a rule, so the first h2 must not draw a
   second one immediately beneath it. */
.kb-article-head + h2,
.kb-prereq + h2 { border-top: 0; padding-top: 0; margin-top: 26px; }

/* ---------- Sidebar page tree (the active category expands inline) ---------- */
.kb-side-tree {
  margin: 2px 0 10px 21px;
  padding-left: 11px;
  border-left: 1px solid var(--kb-border);
}
.kb-side-group + .kb-side-group { margin-top: 10px; }
.kb-side-sub {
  padding: 6px 10px 4px;
  font-size: 10px; font-weight: 700; letter-spacing: .07em;
  text-transform: uppercase; color: var(--kb-muted);
}
.kb-sidebar a.kb-side-page {
  display: block;
  padding: 5px 10px;
  margin-left: -12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--kb-radius-xs) var(--kb-radius-xs) 0;
  font-size: 13px; font-weight: 450; line-height: 1.4;
  color: var(--kb-text-3);
}
.kb-sidebar a.kb-side-page:hover {
  background: var(--kb-panel); color: var(--kb-text); text-decoration: none;
}
.kb-sidebar a.kb-side-page.on {
  background: var(--kb-brand-soft);
  border-left-color: var(--kb-brand);
  color: var(--kb-brand-strong);
  font-weight: 650;
}

/* ---------- Prev / next ---------- */
.kb-pager a {
  position: relative;
  gap: 4px;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.kb-pager a:hover {
  border-color: var(--kb-brand);
  box-shadow: var(--kb-shadow-sm);
  transform: translateY(-1px);
}
.kb-pager em {
  display: flex; align-items: center; gap: 5px;
  color: var(--kb-brand); font-weight: 650;
}
.kb-pager-next em { justify-content: flex-end; }
.kb-pager strong { font-size: 14.5px; font-weight: 620; line-height: 1.35; }
.kb-pager-arrow { width: 13px; height: 13px; flex: none; }

/* ==========================================================================
   ACCESSIBILITY
   --------------------------------------------------------------------------
   Three things this section fixes:
   1. Keyboard focus was invisible. Only the two search inputs had a :focus
      style, so tabbing through a sidebar of 88 links showed nothing but the
      browser default, which disappears entirely on the colored active row.
   2. No reduced-motion support, despite smooth scrolling and transforms.
   3. Four palette values failed WCAG AA as TEXT in the light theme:
      muted 3.01, green 2.56, amber 2.15, magenta 3.89 (AA needs 4.5).
      The hues are kept for fills and borders; text uses the -text variants
      below. The dark theme already passed and is left alone.
   ========================================================================== */

:root {
  --kb-muted: #6b7080;          /* was #8a90a0 — 3.01 on --kb-bg-2, now 4.65 */
  --kb-green-text: #0a7d54;     /* 5.15 on white */
  --kb-amber-text: #9a6104;     /* 5.14 */
  --kb-magenta-text: #b83a8d;   /* 5.21 */
  --kb-red-text: #d13a3a;       /* 4.80 */
  --kb-link: #6a48f0;           /* 5.53 — --kb-brand is 4.38, just under AA */
  --kb-focus: #6a48f0;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --kb-muted: #7b8194;        /* 4.65 on the dark panel — already compliant */
    --kb-green-text: var(--kb-green);
    --kb-amber-text: var(--kb-amber);
    --kb-magenta-text: var(--kb-magenta);
    --kb-red-text: var(--kb-red);
    --kb-link: #a893ff;
    --kb-focus: #a893ff;
  }
}
:root[data-theme="dark"] {
  --kb-muted: #7b8194;
  --kb-green-text: var(--kb-green);
  --kb-amber-text: var(--kb-amber);
  --kb-magenta-text: var(--kb-magenta);
  --kb-red-text: var(--kb-red);
  --kb-link: #a893ff;
  --kb-focus: #a893ff;
}

/* Body links and the accessible text variants */
.kb-article p > a,
.kb-article li > a,
.kb-article td > a,
.kb-xlink { color: var(--kb-link); }

.kb-lvl-beginner { color: var(--kb-green-text) !important; border-color: color-mix(in srgb, var(--kb-green-text) 38%, transparent) !important; }
.kb-lvl-intermediate { color: var(--kb-amber-text) !important; border-color: color-mix(in srgb, var(--kb-amber-text) 40%, transparent) !important; }
.kb-lvl-advanced { color: var(--kb-magenta-text) !important; border-color: color-mix(in srgb, var(--kb-magenta-text) 40%, transparent) !important; }
.kb-tag-internal { color: var(--kb-amber-text); border-color: color-mix(in srgb, var(--kb-amber-text) 45%, transparent); }
.kb-callout-tip .kb-callout-label { color: var(--kb-green-text); }
.kb-callout-warning .kb-callout-label,
.kb-callout-caution .kb-callout-label { color: var(--kb-amber-text); }
.kb-callout-important .kb-callout-label { color: var(--kb-red-text); }
.kb-feedback-note { color: var(--kb-green-text); }
.kb-chip-aud { color: var(--kb-link); }

/* ---------- Visible keyboard focus, everywhere ---------- */
:focus-visible {
  outline: 2px solid var(--kb-focus);
  outline-offset: 2px;
  border-radius: var(--kb-radius-xs);
}
/* The active sidebar row already sits on a tinted background, so the ring
   needs a light halo to stay visible against it. */
.kb-sidebar a:focus-visible,
.kb-side-page:focus-visible {
  outline-offset: -2px;
  box-shadow: 0 0 0 2px var(--kb-panel);
}
.kb-search input:focus-visible,
.kb-hero-search input:focus-visible { outline-offset: 1px; }
/* Mouse users keep the clean look; only keyboard focus draws a ring. */
:focus:not(:focus-visible) { outline: none; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .kb-cat:hover, .kb-pager a:hover { transform: none; }
  .kb-sidebar { transition: none; }
}

/* ---------- Screen-reader-only live region ---------- */
.kb-sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* ---------- Forced-colors / Windows high contrast ---------- */
@media (forced-colors: active) {
  .kb-card, .kb-cat, .kb-pager a, .kb-callout, .kb-table-wrap { border: 1px solid CanvasText; }
  .kb-sidebar a.active, .kb-side-page.on { forced-color-adjust: none; background: Highlight; color: HighlightText; }
  :focus-visible { outline: 2px solid CanvasText; }
}

/* ==========================================================================
   Support hub & request forms — /support/
   Four ways to reach a human: bug report, feature request, customer support,
   SEO specialist consultation. Cards reuse the .kb-cat grid; the forms below
   match the search inputs' focus treatment.
   ========================================================================== */
.kb-support-note { margin-top: 22px; max-width: 640px; font-size: 13.5px; color: var(--kb-text-3); line-height: 1.6; }

.kb-form { max-width: 640px; margin-top: 28px; display: flex; flex-wrap: wrap; gap: 0 16px; }
.kb-form-row { flex: 1 1 100%; margin-bottom: 18px; min-width: 0; }
.kb-form-row.half { flex: 1 1 calc(50% - 8px); min-width: 220px; }
.kb-form-row label { display: block; font-size: 13.5px; font-weight: 600; color: var(--kb-text); margin-bottom: 6px; }
.kb-form-row label em { font-style: normal; color: var(--kb-red-text); }
.kb-form-row input,
.kb-form-row select,
.kb-form-row textarea {
  width: 100%; font: inherit; font-size: 14.5px; color: var(--kb-text);
  background: var(--kb-panel); border: 1px solid var(--kb-border-strong);
  border-radius: var(--kb-radius-sm); padding: 10px 12px; outline: none;
}
.kb-form-row textarea { resize: vertical; min-height: 96px; line-height: 1.55; }
.kb-form-row select { cursor: pointer; }
.kb-form-row input:focus,
.kb-form-row select:focus,
.kb-form-row textarea:focus {
  border-color: var(--kb-brand);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--kb-brand) 18%, transparent);
}
.kb-form-row input::placeholder,
.kb-form-row textarea::placeholder { color: var(--kb-muted); }
.kb-form-hint { margin: 6px 0 0; font-size: 12.5px; color: var(--kb-text-3); line-height: 1.5; }

.kb-form-actions { flex: 1 1 100%; display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 4px; }
.kb-form-submit {
  font: inherit; font-size: 14px; font-weight: 650; color: #fff; cursor: pointer;
  background: var(--kb-brand-strong); border: 0; border-radius: var(--kb-radius-pill);
  padding: 11px 28px;
}
.kb-form-submit:hover { background: var(--kb-brand); }
.kb-form-submit:disabled { opacity: .6; cursor: default; }
.kb-form-status { margin: 0; font-size: 13.5px; color: var(--kb-text-3); }
.kb-form-status.err { color: var(--kb-red-text); }

/* Honeypot: parked off-screen, never display:none — some bots skip hidden
   fields, and this one existing in layout is what catches the rest. */
.kb-hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }

.kb-form-done {
  max-width: 640px; margin-top: 28px; padding: 22px 24px;
  border: 1px solid color-mix(in srgb, var(--kb-green) 38%, transparent);
  background: color-mix(in srgb, var(--kb-green) 6%, var(--kb-panel));
  border-radius: var(--kb-radius-lg);
}
.kb-form-done h2 { margin: 0 0 8px; font-size: 18px; letter-spacing: -.015em; }
.kb-form-done p { margin: 0 0 10px; color: var(--kb-text-2); font-size: 14.5px; }
.kb-form-done p:last-child { margin-bottom: 0; }

@media (max-width: 620px) {
  .kb-form-row.half { flex-basis: 100%; }
}