/* OS-000 Design System Catalogue — Shared Styles */

:root {
  --cat-bg: #ffffff;
  --cat-surface: #f8f9fa;
  --cat-border: #e5e7eb;
  --cat-text: #1a1a1a;
  --cat-text-secondary: #6b7280;
  --cat-text-muted: #9ca3af;
  --cat-accent: #2563eb;
  --cat-accent-light: #eff6ff;
  --cat-code-bg: #f1f5f9;
  --cat-font: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  --cat-font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, monospace;
  --cat-max-width: 1080px;
  --cat-radius: 0;
}

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

body {
  font-family: var(--cat-font);
  color: var(--cat-text);
  background: var(--cat-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Layout ──────────────────────────────── */

.cat-page {
  max-width: var(--cat-max-width);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

/* ── Catalogue masthead — same shell as the AIOS Skill Centre portal ──
   Black band + green kicker + og-tab-rail on a sticky black bar.
   Keep the block identical across every catalogue page (og-tab-rail contract). */

.cat-masthead { background: #000000; padding: 3rem 0 1rem; }
.cat-wrap { max-width: var(--cat-max-width); margin: 0 auto; padding: 0 1.5rem; }
.cat-kicker {
  color: #34C755; font-size: 0.875rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
}
.cat-masthead-title {
  color: #ffffff; font-size: clamp(2rem, 6vw, 3rem); font-weight: 700;
  line-height: 1.15; margin: 1rem 0 0.5rem;
}
.cat-masthead-sub { color: #bbbbbb; margin-bottom: 2rem; }
.cat-rail-bar { position: sticky; top: 0; z-index: 30; background: #000000; padding-top: 1rem; }
.cat-rail-scroll { overflow-x: auto; }
.cat-rail-scroll .og-tab-rail { width: max-content; min-width: 100%; }

/* vendored og-tab-rail — sync from packages/og-tab-rail.css, do not edit here */
.og-tab-rail{display:flex;gap:var(--spacing-1,4px);border-bottom:3px solid var(--color-accent,#109200);}
.og-tab-rail a{color:var(--color-text-inverse-muted,#cccccc);text-decoration:none;font-size:var(--text-sm,0.875rem);font-weight:var(--weight-medium,500);padding:10px 18px;border-radius:var(--radius-md,8px) var(--radius-md,8px) 0 0;}
.og-tab-rail a[aria-current="page"]{background:var(--color-bg,#ffffff);color:var(--color-text,#1a1a1a);font-weight:var(--weight-bold,700);box-shadow:0 3px 0 0 var(--color-bg,#ffffff);}
.og-tab-rail a:hover:not([aria-current="page"]){background:var(--color-bg-inverse-hover,#1c1c1c);color:var(--color-text-inverse,#ffffff);}

/* ── Component header block (below the masthead) ─────────────────── */

.cat-header {
  background: rgba(230, 232, 236, 0.94);
  margin: 0 -1.5rem;
  padding: 1.5rem 1.5rem 1.25rem;
  border-bottom: 1px solid var(--cat-border);
  margin-bottom: 4rem;
}

.cat-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.55rem;
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.875rem;
  font-family: inherit;
  color: #777;
}
.cat-breadcrumb li { display: flex; align-items: center; gap: 0.55rem; }
.cat-breadcrumb li:not(:last-child)::after {
  content: "/";
  color: #c4c4c4;
  font-weight: 400;
  pointer-events: none;
}
.cat-breadcrumb a {
  color: #111;
  text-decoration: none;
}
.cat-breadcrumb a:hover { text-decoration: underline; }
.cat-breadcrumb [aria-current="page"] { color: #777; }

.cat-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.cat-id {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--cat-font-mono);
  color: var(--cat-text-muted);
  background: var(--cat-surface);
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.75rem;
  vertical-align: middle;
}

.cat-aka {
  font-size: 0.8125rem;
  color: var(--cat-text-muted);
  margin-bottom: 0.25rem;
}

.cat-description {
  font-size: 1rem;
  color: var(--cat-text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

/* ── Page-level tabs ─────────────────────── */

.cat-page-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--cat-border);
  margin-bottom: 2.5rem;
}

.cat-page-tab {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cat-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  transition: color 0.15s;
  font-family: var(--cat-font);
}

.cat-page-tab:hover { color: var(--cat-text); }
.cat-page-tab.active { color: var(--cat-text); }
.cat-page-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--cat-text);
}

.cat-page-panel { display: none; }
.cat-page-panel.active { display: block; }

/* ── Sections ────────────────────────────── */

.cat-section {
  margin-bottom: 2.5rem;
}

.cat-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cat-text-muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--cat-border);
}

/* ── Example frame ───────────────────────── */

.cat-example {
  border: 1px solid var(--cat-border);
  border-radius: var(--cat-radius);
  overflow: hidden;
  background: var(--cat-bg);
}

.cat-example-inner {
  padding: 1.5rem;
}

.cat-example-label {
  font-size: 0.75rem;
  color: var(--cat-text-muted);
  padding: 0.5rem 1rem;
  background: var(--cat-surface);
  border-bottom: 1px solid var(--cat-border);
}

/* ── Variants row ────────────────────────── */

.cat-variants {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cat-variant {
  flex: 1;
  min-width: 280px;
}

.cat-variant-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cat-text-secondary);
  margin-bottom: 0.5rem;
  font-family: var(--cat-font-mono);
}

/* ── Parameters table ────────────────────── */

.cat-params {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.cat-params th {
  text-align: left;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cat-text-muted);
  padding: 0.5rem 0.75rem;
  border-bottom: 2px solid var(--cat-border);
}

.cat-params td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--cat-border);
  vertical-align: top;
}

.cat-params code {
  font-family: var(--cat-font-mono);
  font-size: 0.8125rem;
  background: var(--cat-code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}

/* ── Relationships ───────────────────────── */

.cat-rel {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--cat-accent);
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--cat-border);
  border-radius: var(--cat-radius);
  transition: background 0.15s;
}

.cat-rel:hover { background: var(--cat-accent-light); }

/* ── Tokens list ─────────────────────────── */

.cat-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.cat-token {
  font-family: var(--cat-font-mono);
  font-size: 0.75rem;
  color: var(--cat-text-secondary);
  background: var(--cat-code-bg);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

/* ── Code block ──────────────────────────── */

.cat-code-wrapper {
  border: 1px solid var(--cat-border);
  border-radius: var(--cat-radius);
  overflow: hidden;
}

.cat-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--cat-surface);
  border-bottom: 1px solid var(--cat-border);
  font-size: 0.75rem;
  color: var(--cat-text-secondary);
  cursor: pointer;
  user-select: none;
}

.cat-code-header:hover { background: #f0f1f3; }

.cat-code-body {
  display: none;
  overflow-x: auto;
}

.cat-code-body.open { display: block; }

.cat-code-body pre {
  margin: 0;
  padding: 1rem;
  font-family: var(--cat-font-mono);
  font-size: 0.8125rem;
  line-height: 1.5;
  background: var(--cat-surface);
}

/* ── How it works ────────────────────────── */

.cat-behavior {
  font-size: 0.9375rem;
  color: var(--cat-text);
  line-height: 1.7;
  max-width: 600px;
}

.cat-behavior p {
  margin: 0 0 0.85rem;
}

.cat-behavior p:last-child {
  margin-bottom: 0;
}

/* ── Index page ──────────────────────────── */

/* breathing room between the rail bar and the first grid */
.cat-page > .og-card-grid:first-child { margin-top: 2.5rem; }

/* vendored og-card-grid (text variant) — sync from packages/og-card-grid.css,
   do not edit here. os-009, assimilated from 21st.dev @lavikatiyar. */
.og-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1px;background:var(--color-border,#E0E0E0);border:1px solid var(--color-border,#E0E0E0);font-family:var(--font-primary,'Open Sans','Helvetica Neue',Arial,sans-serif);}
.og-card-grid__card{position:relative;display:block;overflow:hidden;cursor:pointer;text-decoration:none;border-radius:0;background:var(--color-bg,#FFFFFF);transition:box-shadow 150ms ease;}
.og-card-grid:hover .og-card-grid__card{transform:none;opacity:1;filter:none;}
.og-card-grid .og-card-grid__card:hover,
.og-card-grid .og-card-grid__card:focus-visible{transform:none;opacity:1;filter:none;box-shadow:inset 0 0 0 1px var(--color-text,#000000);}
.og-card-grid__card:focus-visible{outline:2px solid var(--color-text,#000000);outline-offset:2px;}
.og-card-grid--text .og-card-grid__card{background:var(--color-bg-card,#FFFFFF);border:0;padding:var(--spacing-6,1.5rem);box-shadow:none;}
.og-card-grid--text .og-card-grid__card:hover,
.og-card-grid--text .og-card-grid__card:focus-visible{border-color:transparent;box-shadow:inset 0 0 0 1px var(--color-text,#000000);}
.og-card-grid--text .og-card-grid__title{display:block;color:var(--color-text,#000000);font-size:var(--text-lg,1.125rem);font-weight:var(--weight-bold,700);}
.og-card-grid--text .og-card-grid__eyebrow{font-family:var(--font-mono,'SF Mono',Menlo,monospace);font-size:var(--text-xs,0.75rem);font-weight:var(--weight-regular,400);color:var(--color-text-muted,#777777);margin-left:var(--spacing-1,0.25rem);}
.og-card-grid--text .og-card-grid__desc{display:block;margin-top:var(--spacing-2,0.5rem);color:var(--color-text-secondary,#333333);font-size:var(--text-sm,0.875rem);line-height:var(--leading-normal,1.5);}
.og-card-grid__card--pending{opacity:0.5;pointer-events:none;}
@media (prefers-reduced-motion:reduce){
  .og-card-grid__card{transition:none;}
  .og-card-grid:hover .og-card-grid__card{transform:none;opacity:1;filter:none;}
  .og-card-grid .og-card-grid__card:hover,
  .og-card-grid .og-card-grid__card:focus-visible{transform:none;}
}

.cat-category-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cat-text-muted);
  margin-bottom: 0.75rem;
  margin-top: 2rem;
}

.cat-category-title:first-of-type { margin-top: 0; }


/* ── 2026-09-01 dense shelf + editorial details ── */

.cat-shelf-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  margin: 1.5rem 0 1.25rem;
}
.cat-search {
  flex: 1 1 16rem;
  min-width: 12rem;
  font-family: var(--cat-font);
  font-size: 0.875rem;
  color: var(--cat-text);
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 0;
  padding: 0.55rem 0.75rem;
}
.cat-search:focus {
  outline: 1px solid #000;
  outline-offset: 0;
}
.cat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.cat-chip {
  font-family: var(--cat-font);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #333;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 0;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}
.cat-chip[aria-pressed="true"] {
  color: #fff;
  background: #000;
  border-color: #000;
}
.cat-chip:hover:not([aria-pressed="true"]) {
  background: #f5f5f3;
}

.cat-shelf {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: #e0e0e0;
  border: 1px solid #e0e0e0;
  margin-top: 0;
}
.cat-shelf__cell {
  display: flex;
  flex-direction: column;
  aspect-ratio: 1 / 1;
  background: #fff;
  text-decoration: none;
  color: inherit;
  border-radius: 0;
  padding: 0.85rem 0.9rem 0.75rem;
  min-width: 0;
  overflow: hidden;
  transition: background 120ms ease;
}
.cat-shelf__cell:hover,
.cat-shelf__cell:focus-visible {
  background: #f7f7f5;
  box-shadow: inset 0 0 0 1px #d0d0d0;
  transform: none;
  filter: none;
  outline: none;
}
.cat-shelf__draw {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  pointer-events: none;
}
.cat-shelf__draw svg {
  width: 68%;
  height: 68%;
  stroke: #b0b0b0;
  fill: none;
  stroke-width: 1.25;
  stroke-linecap: square;
  stroke-linejoin: miter;
}
.cat-shelf__copy { flex: 0 0 auto; min-height: 0; }
.cat-shelf__title {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: #000;
  line-height: 1.2;
}
.cat-shelf__desc {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.75rem;
  line-height: 1.3;
  color: #333;
}
.cat-shelf__aka {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.6875rem;
  line-height: 1.3;
  color: #9ca3af;
}
@media (max-width: 900px) {
  .cat-shelf { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .cat-shelf { grid-template-columns: 1fr; }
}

/* Quiet editorial header (details pages) */
.cat-edit-head {
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
}
.cat-edit-head .cat-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.cat-edit-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #000;
  text-decoration: none;
}
.cat-mark {
  display: block;
  width: 8px;
  height: 8px;
  background: #109200;
  flex: 0 0 8px;
}
.cat-edit-nav {
  display: flex;
  gap: 1.25rem;
}
.cat-edit-nav a {
  font-size: 0.875rem;
  font-weight: 600;
  color: #333;
  text-decoration: none;
}
.cat-edit-nav a[aria-current="page"] { color: #000; }
.cat-edit-nav a:hover { color: #000; }

.cat-lead {
  padding: 2.5rem 0 1.5rem;
}
.cat-lead .cat-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.75rem;
}
.cat-lead .cat-description {
  font-size: 1.125rem;
  color: #333;
  margin-bottom: 0.5rem;
  max-width: 40rem;
}
.cat-lead .cat-aka {
  font-size: 0.875rem;
  color: #9ca3af;
  margin-bottom: 0;
}
.cat-header--quiet {
  background: transparent;
  border: 0;
  margin: 0;
  padding: 2.5rem 0 1.25rem;
}
.cat-also {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e0e0e0;
}
.cat-also__label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: 0.75rem;
}
.cat-also__row {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: #e0e0e0;
  border: 1px solid #e0e0e0;
}
.cat-also__row a {
  flex: 1 1 8rem;
  background: #fff;
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: #000;
  font-size: 0.875rem;
  font-weight: 700;
}
.cat-also__row a:hover { background: #f7f7f5; }
.cat-also__row a span {
  display: block;
  font-weight: 400;
  font-size: 0.75rem;
  color: #6b7280;
  margin-top: 0.15rem;
}