/* ==========================================================================
   DESIGNs — hub & style-guide chrome additions
   Layered on top of system.css. Everything here exists because this repo
   renders N ecosystems from one registry; system.css stays untouched so the
   borrowed aetheris reference pages keep rendering byte-for-byte.
   ========================================================================== */

:root {
  --ds-radius: 14px;
  --ds-gap: 18px;
}

/* ---------- product mark (the "D" between hub and ecosystem) ---------- */
.ds-mark {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--ax-accent), var(--ax-info));
  color: #fff;
  font-family: var(--font-heading, var(--font-sans));
  font-weight: 900; font-size: 15px; line-height: 1;
  box-shadow: 0 0 18px var(--ax-accent-glow);
  flex: none;
}
.ds-divider {
  width: 1px; height: 26px; margin: 0 14px;
  background: var(--ax-border);
  flex: none;
}

/* ---------- ecosystem switcher ---------- */
.ax-ecosystem-switcher { position: relative; }
.ecosystem-trigger { gap: 8px; }
.ecosystem-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  min-width: 268px; padding: 6px;
  background: var(--ax-surface-3);
  border: 1px solid var(--ax-border);
  border-radius: 12px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.55);
  display: none; z-index: 60;
}
.ax-ecosystem-switcher.open .ecosystem-menu { display: block; }
.ecosystem-option {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px; width: 100%;
  font-size: 13.5px; color: var(--ax-text-2); text-decoration: none;
}
.ecosystem-option:hover { background: var(--ax-surface-1); color: var(--ax-text-1); }
.ecosystem-option.active { color: var(--ax-text-1); background: var(--ax-surface-1); }
.ecosystem-menu-sep { height: 1px; background: var(--ax-border-subdued); margin: 6px 4px; }
.ecosystem-dot {
  width: 10px; height: 10px; border-radius: 50%;
  display: inline-block; flex: none;
  box-shadow: 0 0 10px currentColor;
}

/* ---------- palette variant switcher ---------- */
.ax-variant-switcher {
  display: flex; gap: 2px; align-items: center;
  padding: 3px; border-radius: 9px;
  background: var(--ax-surface-1);
  border: 1px solid var(--ax-border-subdued);
}
.ax-variant-switcher .variant-option {
  font-size: 11.5px; padding: 5px 10px; border-radius: 6px;
  color: var(--ax-text-2); white-space: nowrap;
}
.ax-variant-switcher .variant-option.active {
  background: var(--ax-accent); color: var(--ax-text-inverse); font-weight: 700;
}

/* ---------- section scaffolding ---------- */
.ds-section { margin: 56px 0; }
.ds-section-sub {
  color: var(--ax-text-2); font-size: 14.5px; line-height: 1.65;
  max-width: 78ch; margin: 8px 0 22px;
}
.ds-section-head {
  display: flex; gap: 16px; align-items: flex-start;
  margin: 56px 0 20px; scroll-margin-top: 96px;
}
.ds-section-index {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--ax-accent);
  border: 1px solid var(--ax-border); border-radius: 8px;
  padding: 4px 8px; flex: none; margin-top: 4px;
}
.ds-block { margin-bottom: 8px; }
.ds-block-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.ds-block-note { color: var(--ax-text-3); font-size: 12.5px; line-height: 1.6; margin: 10px 0 0; }
.ds-subblock { margin: 28px 0; scroll-margin-top: 96px; }
.ds-subblock-title {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ax-text-3); margin-bottom: 12px; font-weight: 700;
}

/* ---------- demo frames ---------- */
.ds-demo {
  border: 1px solid var(--ax-border-subdued);
  border-radius: var(--ds-radius);
  background: var(--ax-bg-subtle);
  margin-bottom: var(--ds-gap);
  overflow: hidden;
}
.ds-demo-head {
  display: flex; align-items: baseline; gap: 10px;
  padding: 12px 16px; border-bottom: 1px solid var(--ax-border-subdued);
  background: var(--ax-surface-1);
}
.ds-demo-title { font-size: 13.5px; font-weight: 600; color: var(--ax-text-1); }
.ds-demo-note { font-size: 11.5px; color: var(--ax-text-3); }
.ds-demo-stage {
  padding: 22px 16px;
  background-image:
    linear-gradient(45deg, var(--ax-surface-1) 25%, transparent 25%),
    linear-gradient(-45deg, var(--ax-surface-1) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--ax-surface-1) 75%),
    linear-gradient(-45deg, transparent 75%, var(--ax-surface-1) 75%);
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}
.ds-demo .ax-code-block { margin: 0; border-radius: 0; border-left: 0; border-right: 0; border-bottom: 0; }
.ds-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ds-col { display: flex; flex-direction: column; gap: 10px; }

.ds-force-hover { background: var(--ax-accent-hover) !important; filter: brightness(1.08); }
.ds-force-focus { box-shadow: 0 0 0 3px var(--ax-accent-glow) !important; border-color: var(--ax-accent) !important; }
.ds-toast-inline { position: static !important; transform: none !important; opacity: 1 !important; animation: none !important; }
.ds-inline-chip {
  display: inline-block; width: 13px; height: 13px; border-radius: 4px;
  border: 1px solid var(--ax-border); vertical-align: -2px; margin-right: 6px;
}

/* ---------- swatches ---------- */
.ds-swatch-meta {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-family: var(--font-mono); font-size: 10px; color: var(--ax-text-3);
  margin-top: 6px;
}
.ds-swatch-strip { margin: 0; }

/* ---------- type scale ---------- */
.ds-type-scale { display: flex; flex-direction: column; gap: 2px; }
.ds-type-row {
  display: grid; grid-template-columns: minmax(220px, 300px) 1fr;
  gap: 22px; align-items: center;
  padding: 18px 0; border-bottom: 1px solid var(--ax-border-subdued);
}
.ds-type-row:last-child { border-bottom: 0; }
.ds-type-meta { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--ax-text-3); }
.ds-type-meta strong { color: var(--ax-text-1); font-size: 13px; }
.ds-type-family { font-family: var(--font-mono); font-size: 10.5px; }
.ds-type-sample { color: var(--ax-text-1); overflow: hidden; text-overflow: ellipsis; }

/* ---------- shape + motion ---------- */
.ds-shape-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(184px, 1fr)); gap: 14px; }
.ds-shape-card {
  display: flex; flex-direction: column; gap: 8px; align-items: flex-start;
  padding: 14px; border: 1px solid var(--ax-border-subdued);
  border-radius: 12px; background: var(--ax-surface-1);
}
.ds-shape-card span { font-size: 11px; color: var(--ax-text-3); word-break: break-word; }
.ds-shape-box {
  width: 100%; height: 62px;
  background: var(--ax-surface-3);
  border: 1px solid var(--ax-border);
}
.ds-motion-lab { display: flex; flex-direction: column; gap: 10px; }
.ds-motion-row {
  display: grid; grid-template-columns: minmax(150px, 190px) minmax(160px, 240px) 1fr;
  gap: 16px; align-items: center; font-size: 11.5px; color: var(--ax-text-3);
}
.ds-motion-track {
  height: 8px; border-radius: 999px; background: var(--ax-surface-2); overflow: hidden;
}
.ds-motion-bar {
  width: 18%; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--ax-accent), var(--ax-info));
  transition-property: width;
}
.ds-motion-lab:hover .ds-motion-bar { width: 100%; }

/* ---------- icons ---------- */
.ds-icon-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 10px; }
.ds-icon-tile {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 14px 8px; border: 1px solid var(--ax-border-subdued);
  border-radius: 12px; background: var(--ax-surface-1);
  font-size: 10.5px; color: var(--ax-text-3); text-align: center;
  overflow: hidden;
}
.ds-icon-tile span { word-break: break-word; line-height: 1.35; }
.ds-icon-art {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  color: var(--ax-accent);
}
.ds-icon-art svg { width: 100%; height: 100%; }
.ds-icon-placeholder {
  border-radius: 9px; background: var(--ax-surface-3);
  border: 1px solid var(--ax-border);
  font-family: var(--font-mono); font-size: 15px; font-weight: 700; color: var(--ax-text-2);
}

/* ---------- molecules ---------- */
.ds-search-molecule {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 999px;
  background: var(--ax-surface-2); border: 1px solid var(--ax-border);
  max-width: 420px; color: var(--ax-text-3);
}
.ds-search-molecule input { flex: 1; color: var(--ax-text-1); }
.ds-chrome-preview {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 14px 18px; border-radius: 12px;
  background: var(--ax-surface-1); border: 1px solid var(--ax-border);
}

/* ---------- docs layout ---------- */
.ds-doc-layout {
  display: grid; grid-template-columns: minmax(200px, 250px) minmax(0, 1fr);
  gap: 34px; align-items: start; margin-top: 28px;
}
.ds-doc-layout > .ax-toc-aside { position: sticky; top: 92px; }
.ds-doc-layout:has(> .ds-doc-body:only-child) { grid-template-columns: minmax(0, 1fr); }
.ds-doc-body { min-width: 0; }
.ds-doc-meta { font-family: var(--font-mono); font-size: 10.5px; color: var(--ax-text-3); margin-top: 10px; }
.ds-doc-render { max-width: 92ch; }
.ds-doc-render table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 13.5px; }
.ds-doc-render th, .ds-doc-render td { border: 1px solid var(--ax-border-subdued); padding: 9px 12px; text-align: left; vertical-align: top; }
.ds-doc-render th { background: var(--ax-surface-2); color: var(--ax-text-1); font-weight: 600; }
.ds-doc-render code { font-family: var(--font-mono); font-size: 12.5px; }
.ds-doc-render pre {
  background: var(--ax-surface-1); border: 1px solid var(--ax-border-subdued);
  border-radius: 10px; padding: 16px; overflow: auto; margin: 18px 0;
}
.ds-doc-render img { max-width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--ax-border-subdued); }
.ds-doc-render ol, .ds-doc-render ul { padding-left: 1.35em; margin: 12px 0; }
.ds-doc-render li { margin: 6px 0; line-height: 1.65; }
.ds-doc-render blockquote {
  margin: 18px 0; padding: 12px 16px; border-left: 3px solid var(--ax-accent);
  background: var(--ax-surface-1); border-radius: 0 10px 10px 0; color: var(--ax-text-2);
}

/* ---------- provenance / spec blocks ---------- */
.ds-provenance-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
}
.ds-provenance-grid > div {
  display: flex; flex-direction: column; gap: 6px;
  padding: 14px; border: 1px solid var(--ax-border-subdued);
  border-radius: 12px; background: var(--ax-surface-1); font-size: 13px; color: var(--ax-text-2);
}
.ds-key { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ax-text-3); }
.ds-spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.ds-spec-card {
  padding: 16px; border: 1px solid var(--ax-border-subdued); border-radius: 12px;
  background: var(--ax-surface-1);
}
.ds-spec-label { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ax-text-3); margin-bottom: 8px; }
.ds-spec-value { font-size: 15px; font-weight: 600; color: var(--ax-text-1); line-height: 1.4; }
.ds-spec-note { font-size: 12.5px; color: var(--ax-text-2); margin-top: 8px; line-height: 1.6; }

/* ---------- module map (spec ecosystems) ---------- */
.ds-module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.ds-module-card {
  padding: 14px; border: 1px solid var(--ax-border-subdued);
  border-radius: 12px; background: var(--ax-surface-1);
}
.ds-module-route {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--ax-accent); margin-bottom: 6px;
}
.ds-module-name { font-size: 14px; font-weight: 600; color: var(--ax-text-1); }
.ds-module-purpose { font-size: 12px; color: var(--ax-text-2); margin-top: 6px; line-height: 1.55; }
.ds-list-ordered { padding-left: 1.3em; margin: 0; }
.ds-list-ordered li { margin: 8px 0; line-height: 1.6; color: var(--ax-text-2); }

/* ---------- hub: ecosystem cards ---------- */
.ds-hub-hero { text-align: left; padding: 64px 0 26px; }
.ds-hub-hero .ax-hero-title { max-width: 20ch; }
.ds-hub-hero .ax-hero-sub { max-width: 76ch; }
.ds-eco-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: var(--ds-gap); }
.ds-eco-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 16px;
  padding: 20px; border-radius: 16px;
  background: var(--ax-surface-1);
  border: 1px solid var(--ax-border);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.ds-eco-card:hover { border-color: var(--eco-accent, var(--ax-accent)); transform: translateY(-3px); }
.ds-eco-card-glow {
  position: absolute; inset: -40% -10% auto -10%; height: 190px;
  background: radial-gradient(60% 100% at 20% 0%, var(--eco-accent, var(--ax-accent)), transparent 70%);
  opacity: 0.16; pointer-events: none;
}
.ds-eco-card-head { display: flex; align-items: flex-start; gap: 14px; position: relative; }
.ds-eco-card-mark { flex: none; }
.ds-eco-card-title {
  font-family: var(--font-heading, var(--font-sans));
  font-size: 21px; font-weight: 700; color: var(--ax-text-1); text-decoration: none; display: block;
}
.ds-eco-card-title:hover { color: var(--eco-accent, var(--ax-accent)); }
.ds-eco-card-tag { font-size: 12.5px; color: var(--ax-text-2); margin-top: 4px; line-height: 1.5; }
.ds-eco-card-strip { display: flex; gap: 6px; flex-wrap: wrap; position: relative; }
.ds-strip-swatch {
  width: 26px; height: 26px; border-radius: 7px;
  border: 1px solid var(--ax-border); cursor: copy;
}
.ds-strip-note { font-size: 12px; color: var(--ax-text-3); font-style: italic; }
.ds-eco-card-facts {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 14px; margin: 0; position: relative;
}
.ds-eco-card-facts > div { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.ds-eco-card-facts dt {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ax-text-3);
}
.ds-eco-card-facts dd {
  font-size: 13.5px; color: var(--ax-text-1); margin: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ds-fact-derive { color: var(--ax-text-3); font-size: 11.5px; }
.ds-eco-card-actions {
  display: flex; gap: 8px; flex-wrap: wrap; position: relative;
  border-top: 1px solid var(--ax-border-subdued); padding-top: 14px; margin-top: auto;
}
.ds-stat-note { font-size: 11px; color: var(--ax-text-3); margin-top: 4px; }

/* ---------- hub: hero + ecosystem hero ---------- */
.ds-eco-hero { text-align: left; padding: 44px 0 20px; }
.ds-eco-hero .ax-hero-title { max-width: 24ch; }
.ds-eco-hero-mark { margin-bottom: 18px; }
.ds-eco-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 22px; }

/* ---------- variants ---------- */
.ds-variant-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.ds-variant-card {
  padding: 16px; border: 1px solid var(--ax-border-subdued);
  border-radius: 12px; background: var(--ax-surface-1);
}
.ds-variant-swatch { width: 100%; height: 54px; border-radius: 9px; border: 1px solid var(--ax-border); margin-bottom: 12px; }
.ds-variant-name { font-size: 14px; font-weight: 600; color: var(--ax-text-1); }
.ds-variant-note { font-size: 11.5px; color: var(--ax-text-3); margin-top: 6px; line-height: 1.55; font-family: var(--font-mono); }

/* ---------- asset library ---------- */
.ds-asset-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; }
.ds-asset-card {
  display: flex; flex-direction: column; text-decoration: none;
  border: 1px solid var(--ax-border-subdued); border-radius: 12px;
  background: var(--ax-surface-1); overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.ds-asset-card:hover { border-color: var(--ax-accent); transform: translateY(-2px); }
.ds-asset-art {
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
  padding: 12px; background:
    repeating-conic-gradient(var(--ax-surface-2) 0% 25%, var(--ax-surface-1) 0% 50%) 50% / 16px 16px;
  overflow: hidden;
}
.ds-asset-art img { max-width: 100%; max-height: 100%; object-fit: contain; }
.ds-asset-vector svg { max-width: 100%; max-height: 100%; height: auto; }
.ds-asset-file { font-family: var(--font-mono); font-size: 12px; color: var(--ax-text-3); }
.ds-asset-meta { padding: 10px 12px; border-top: 1px solid var(--ax-border-subdued); display: flex; flex-direction: column; gap: 3px; }
.ds-asset-name { font-size: 12px; color: var(--ax-text-1); word-break: break-all; line-height: 1.4; }
.ds-asset-sub { font-family: var(--font-mono); font-size: 10px; color: var(--ax-text-3); }
.ds-sample-cell { display: flex; gap: 6px; align-items: center; flex-wrap: nowrap; }
.ds-sample {
  width: 30px; height: 30px; border-radius: 6px; object-fit: contain;
  background: var(--ax-surface-2); border: 1px solid var(--ax-border-subdued); padding: 3px;
}
.ds-sample-vector svg { width: 100%; height: 100%; }
.ds-sample-file { display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 9px; color: var(--ax-text-3); }

/* ---------- pipeline ---------- */
.ds-pipeline { display: flex; flex-direction: column; gap: 12px; }
.ds-pipeline-stage {
  display: grid; grid-template-columns: 58px 1fr; gap: 18px;
  padding: 18px; border: 1px solid var(--ax-border-subdued);
  border-radius: 14px; background: var(--ax-surface-1);
}
.ds-pipeline-num {
  font-family: var(--font-mono); font-size: 18px; font-weight: 700;
  color: var(--ax-accent); opacity: 0.9;
}
.ds-pipeline-title { font-size: 15px; font-weight: 600; color: var(--ax-text-1); margin-bottom: 6px; }
.ds-pipeline-body p { font-size: 13.5px; color: var(--ax-text-2); line-height: 1.65; margin: 10px 0 0; }
.ds-pipeline-body code { display: inline-block; margin-bottom: 2px; }

/* ---------- search results (dynamic) ---------- */
.ax-search-empty { padding: 22px 16px; text-align: center; color: var(--ax-text-3); font-size: 13px; }
.ax-search-result-section {
  padding: 8px 16px 4px; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ax-text-3);
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .ds-doc-layout { grid-template-columns: minmax(0, 1fr); }
  .ds-doc-layout > .ax-toc-aside { position: static; }
  .ds-type-row { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .ds-motion-row { grid-template-columns: minmax(0, 1fr); gap: 8px; }
}
@media (max-width: 720px) {
  .ds-eco-grid { grid-template-columns: minmax(0, 1fr); }
  .ax-variant-switcher { display: none; }
  .ds-eco-card-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}