/* MAMUT-routing site stylesheet — "Nocturne" design system (Adrien's Claude-Design
   handoff, merged demo). Dual dark/light palettes taken verbatim from the demo's
   renderVals; Inter is self-hosted (webapp/fonts/, no third-party font calls). */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("./fonts/InterVariable.woff2") format("woff2-variations");
}

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

:root {
  --bg: #f6f5f0;
  --s: #ffffff;
  --ink: #201b45;
  --mut: #6f6f92;
  --div: rgba(32, 27, 69, 0.14);
  --acc: #5b43e8;
  --on-acc: #ffffff;
  --cy: #0d94ba;
  --gr: #0f9e68;
  --am: #c47f00;
  --cor: #e8503f;
  --acc-t: rgba(91, 67, 232, 0.11);
  --cy-t: rgba(13, 148, 186, 0.12);
  --gr-t: rgba(15, 158, 104, 0.13);
  --am-t: rgba(196, 127, 0, 0.13);
  --cor-t: rgba(232, 80, 63, 0.12);
  --svg: #efede6;
  --ptc: #3a3f55;
  --dot: rgba(32, 27, 69, 0.14);
  --road: rgba(32, 27, 69, 0.13);
  --panel: rgba(255, 255, 255, 0.94);
  --edge: rgba(91, 67, 232, 0.22);
  --shadow: 0 14px 36px rgba(25, 29, 54, 0.14);
  --route-0: #5a43e8;
  --route-1: #0d94ba;
  --route-2: #0f9e68;
  --route-3: #c47f00;
  --route-4: #d63d8c;
  --route-5: #2f6fd6;
  --route-6: #7a9e0d;
  --route-7: #9b4fd6;
  --route-8: #d65f2a;
  --route-9: #0da893;
  --route-10: #94940d;
  --route-11: #d64f4f;
  --route-12: #1f7fd6;
  --route-13: #4f9e1f;
  --route-14: #b8930f;
  --route-15: #7a4fd6;
  --route-16: #0d9e94;
  --route-17: #d66a9b;
  --route-18: #3d85ad;
  --route-19: #a87a4f;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #101226;
  --s: #1b1e3d;
  --ink: #edeffc;
  --mut: #8d92b8;
  --div: rgba(237, 239, 252, 0.13);
  --acc: #9d8bff;
  --on-acc: #101226;
  --cy: #3cd6f5;
  --gr: #45e8a5;
  --am: #ffc14d;
  --cor: #ff7a6e;
  --acc-t: rgba(157, 139, 255, 0.16);
  --cy-t: rgba(60, 214, 245, 0.14);
  --gr-t: rgba(69, 232, 165, 0.16);
  --am-t: rgba(255, 193, 77, 0.16);
  --cor-t: rgba(255, 122, 110, 0.16);
  --svg: #0c0e1f;
  --ptc: #dfe3f5;
  --dot: rgba(238, 240, 255, 0.08);
  --road: rgba(238, 240, 255, 0.1);
  --panel: rgba(24, 27, 54, 0.92);
  --edge: rgba(157, 139, 255, 0.28);
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
  --route-0: #9d8bff;
  --route-1: #3cd6f5;
  --route-2: #45e8a5;
  --route-3: #ffc14d;
  --route-4: #ff7ab8;
  --route-5: #7db1ff;
  --route-6: #c9ec55;
  --route-7: #d18cff;
  --route-8: #ff9866;
  --route-9: #3fe8cc;
  --route-10: #e8e055;
  --route-11: #ff8f8f;
  --route-12: #66c2ff;
  --route-13: #9ff06b;
  --route-14: #f0d066;
  --route-15: #b78cff;
  --route-16: #55f0e0;
  --route-17: #ffa8cc;
  --route-18: #8fd0f0;
  --route-19: #e8bb90;
  color-scheme: dark;
}

/* ── Base ────────────────────────────────────────────────────────────────── */

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.015em;
}

code,
.mono,
.mono-block {
  font-family: "Inter", system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
}

/* Class display rules must never defeat the hidden attribute. */
[hidden] {
  display: none !important;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: 2px;
}

::selection {
  background: color-mix(in srgb, var(--acc) 30%, transparent);
}

.table-cell-num,
.stat-grid dd,
.meta-line,
.badge-cost,
.stat-cost,
.change-cost-value {
  font-variant-numeric: tabular-nums;
}

/* Legacy background blobs: retired by the Nocturne flat ground. */
.bg-shape {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Fading hairline rule — the Nocturne signature. */
.hr,
.fading-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(
    to right,
    transparent,
    var(--div) 48px,
    var(--div) calc(100% - 48px),
    transparent
  );
}

/* ── Header / nav ────────────────────────────────────────────────────────── */

.app-header {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 24px;
  height: 56px;
  flex: none;
  border-bottom: 1px solid var(--div);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 6px;
  white-space: nowrap;
}

.brand-mark {
  width: 10px;
  height: 10px;
  flex: none;
  background: linear-gradient(135deg, var(--acc), var(--cy));
  border-radius: 2px;
  transform: rotate(45deg);
}

.brand-name {
  font-weight: 500;
  font-size: 16.5px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.primary-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  font-size: 14px;
  color: var(--mut);
  padding: 4px 2px;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--acc);
}

.header-tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle {
  display: inline-flex;
  border: 1px solid var(--div);
  border-radius: 999px;
  overflow: hidden;
  font-size: 11px;
  cursor: pointer;
  user-select: none;
}

.theme-toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.theme-side {
  padding: 4px 10px;
  color: var(--mut);
}

:root:not([data-theme="dark"]) .theme-side-sun,
[data-theme="dark"] .theme-side-moon {
  background: var(--acc);
  color: var(--on-acc);
}

.theme-toggle:has(input:focus-visible) {
  outline: 2px solid var(--acc);
  outline-offset: 2px;
}

.header-github {
  font-size: 12.5px;
  color: var(--mut);
  white-space: nowrap;
}

.header-github:hover {
  color: var(--acc);
}

/* ── Breadcrumbs ─────────────────────────────────────────────────────────── */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
  padding: 10px 24px 0;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

.breadcrumbs:empty {
  display: none;
}

.breadcrumbs a:hover {
  color: var(--acc);
}

.breadcrumb-sep {
  opacity: 0.55;
}

.breadcrumb-github-link {
  width: 1.7rem;
  height: 1.7rem;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  opacity: 0.7;
}

.breadcrumb-github-link:hover,
.breadcrumb-github-link:focus-visible {
  background: var(--acc-t);
  opacity: 1;
}

.breadcrumb-github-link img {
  width: 1.05rem;
  height: 1.05rem;
  display: block;
}

[data-theme="dark"] .breadcrumb-github-link img {
  filter: invert(1);
}

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

.layout {
  display: grid;
  grid-template-columns: minmax(300px, 340px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 24px 44px;
  flex: 1;
}

.layout[data-shell="editorial"],
.layout[data-shell="project"] {
  grid-template-columns: minmax(260px, 300px) minmax(0, 1fr);
}

.layout[data-shell="home"] {
  display: block;
  padding: 0;
  max-width: none;
}

.layout[data-shell="home"] #pageAside {
  display: none;
}

.layout[data-shell="explorer"] .stage {
  min-width: 0;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.stage {
  min-width: 0;
}

/* ── Cards ───────────────────────────────────────────────────────────────── */

.card,
.mini-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 12px;
  padding: 16px;
}

.card > h2,
.mini-card > h3,
.mini-card > h4 {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mut);
  margin: 0;
  font-weight: 500;
}

.card p,
.mini-card p,
.stage p {
  margin: 0;
}

.card ul,
.stage ul {
  margin: 0;
}

.card-heading {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Explainers and content tiles keep readable titles (not kickers). */
.explainer-grid .mini-card > h3,
.family-grid .mini-card > h3,
.problem-grid .mini-card > h3,
.project-page .mini-card > h3,
.project-lead h2 {
  font-size: 17px;
  letter-spacing: -0.015em;
  text-transform: none;
  color: var(--ink);
}

.explainer-grid .mini-card h4 {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mut);
  margin: 0.6rem 0 0;
}

/* ── Buttons / links / chips ─────────────────────────────────────────────── */

.button-link,
.mini-link,
.selector-chip,
.bks-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font: inherit;
  border: none;
  background: transparent;
}

.button-link {
  font-size: 13px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--div);
  color: var(--ink);
}

.button-link:hover {
  background: color-mix(in srgb, var(--ink) 7%, transparent);
}

.button-link.primary {
  background: var(--acc);
  border-color: transparent;
  color: var(--on-acc);
}

.button-link.primary:hover {
  background: color-mix(in srgb, var(--acc) 88%, var(--ink));
}

.mini-link {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--acc);
  padding: 4px 2px;
}

.mini-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.selector-chip,
.bks-chip {
  flex: none;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 6px;
  color: var(--mut);
  box-shadow: inset 0 0 0 1px var(--div);
}

.selector-chip:hover,
.bks-chip:hover {
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--mut);
}

.selector-chip.active,
.bks-chip.active {
  background: var(--acc-t);
  color: var(--acc);
  box-shadow: inset 0 0 0 1px var(--edge);
}

.inline-actions,
.chip-row,
.selector-row,
.quick-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

/* ── Badges / tags ───────────────────────────────────────────────────────── */

.badge-row,
.problem-badges,
.scope-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--acc-t);
  color: var(--acc);
}

.badge.alt {
  background: var(--cy-t);
  color: var(--cy);
}

.badge.optimal {
  background: var(--gr-t);
  color: var(--gr);
  cursor: help;
}

.optimal-badge-icon {
  width: 1.05em;
  height: 1.05em;
  display: inline-block;
  vertical-align: -0.15em;
}

[data-theme="dark"] .optimal-badge-icon {
  filter: invert(1);
}

.badge-cost,
.stat-cost,
.change-cost-value {
  color: var(--gr);
  font-weight: 500;
}

.bks-link-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

a.bks-link-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--acc-t);
  color: var(--acc);
}

a.bks-link-chip:hover,
a.bks-link-chip:focus-visible {
  background: var(--acc);
  color: var(--on-acc);
}

a.bks-link-chip.optimal {
  background: var(--gr-t);
  color: var(--gr);
}

a.bks-link-chip.optimal:hover,
a.bks-link-chip.optimal:focus-visible {
  background: var(--gr);
  color: var(--bg);
}

a.bks-link-chip .badge-cost {
  color: inherit;
}

.bks-link-chip-glyph {
  font-size: 10px;
  opacity: 0.7;
}

/* ── Forms ───────────────────────────────────────────────────────────────── */

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.field > span {
  font-size: 11px;
  color: var(--mut);
}

.field input,
.field select,
.field textarea,
select,
input[type="search"],
input[type="number"],
input[type="text"],
input[type="file"] {
  font: inherit;
  font-size: 13px;
  color: var(--ink);
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 8px;
  min-height: 32px;
  padding: 5px 10px;
  max-width: 100%;
  caret-color: var(--acc);
}

.field input:hover,
.field select:hover {
  border-color: color-mix(in srgb, var(--ink) 45%, transparent);
}

.field input:focus-visible,
.field select:focus-visible {
  border-color: var(--acc);
  outline-offset: 0;
}

input[type="range"] {
  accent-color: var(--acc);
  padding: 0;
  border: none;
  background: transparent;
  min-height: auto;
}

input[type="checkbox"] {
  accent-color: var(--acc);
}

input[type="file"] {
  padding: 8px 10px;
  min-height: auto;
  font-size: 12px;
  color: var(--mut);
}

.catalog-filter-grid,
.collection-filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

.catalog-filter-card {
  gap: 10px;
}

.collection-filter-reset {
  align-self: flex-start;
}

.checkbox-field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.field-hint {
  font-size: 11px;
  color: var(--mut);
}

/* ── Tables ──────────────────────────────────────────────────────────────── */

.table-wrap {
  overflow-x: auto;
  min-width: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mut);
  padding: 6px 8px;
  font-weight: 500;
}

td {
  padding: 7px 8px;
}

/* Row rules painted as row-level strips so the end-fade spans the row. */
thead tr {
  background: linear-gradient(
      to right,
      transparent,
      var(--div) 48px,
      var(--div) calc(100% - 48px),
      transparent
    )
    no-repeat bottom / 100% 1px;
}

tbody tr {
  background: linear-gradient(
      to right,
      transparent,
      color-mix(in srgb, var(--ink) 8%, transparent) 48px,
      color-mix(in srgb, var(--ink) 8%, transparent) calc(100% - 48px),
      transparent
    )
    no-repeat bottom / 100% 1px;
}

tbody tr:hover {
  background:
    linear-gradient(
        color-mix(in srgb, var(--ink) 4%, transparent),
        color-mix(in srgb, var(--ink) 4%, transparent)
      )
      no-repeat 0 0 / 100% 100%,
    linear-gradient(
        to right,
        transparent,
        color-mix(in srgb, var(--ink) 8%, transparent) 48px,
        color-mix(in srgb, var(--ink) 8%, transparent) calc(100% - 48px),
        transparent
      )
      no-repeat bottom / 100% 1px;
}

.table-cell-mono {
  font-variant-numeric: tabular-nums;
}

.vrp-link {
  color: var(--acc);
}

.vrp-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.grouped-instance-table tr.group-header td.group-header-cell {
  padding: 12px 8px 5px;
  font-weight: 500;
}

.grouped-instance-table .group-name {
  font-size: 14px;
  color: var(--ink);
}

.grouped-instance-table tr.group-sub td.indent {
  width: 1.4rem;
  color: var(--mut);
  text-align: center;
  user-select: none;
}

.catalog-results {
  margin-top: 14px;
}

/* ── Stat grids / lists ──────────────────────────────────────────────────── */

.stat-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 5px 14px;
  margin: 0;
  font-size: 12.5px;
}

.stat-grid dt {
  color: var(--mut);
}

.stat-grid dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.artifact-list,
.link-list,
.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 12.5px;
}

.artifact-list a,
.link-list a {
  color: var(--acc);
}

.artifact-list a:hover,
.link-list a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.meta-line,
.route-note {
  font-size: 11.5px;
  color: var(--mut);
}

.mono-block {
  font-size: 12px;
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 8px;
  padding: 10px 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.empty-state {
  font-size: 12.5px;
  color: var(--mut);
  border: 1px dashed var(--div);
  border-radius: 8px;
  padding: 14px;
}

/* ── Home page (demo: hero, stats, featured card, catalog rows) ─────────── */

.home-page {
  width: 100%;
}

.home-hero {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 56px;
  padding: 52px 44px 40px;
  max-width: 1440px;
  margin: 0 auto;
}

.home-kicker {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cor);
  margin-bottom: 14px;
}

.home-hero h1 {
  font-size: 46px;
  line-height: 1.08;
  letter-spacing: -0.015em;
  font-weight: 500;
  margin: 0 0 18px;
  max-width: 16ch;
}

.hero-grad {
  background: linear-gradient(90deg, var(--acc), var(--cy));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.home-lede {
  font-size: 15px;
  line-height: 1.65;
  color: var(--mut);
  max-width: 56ch;
  margin: 0 0 26px;
}

.home-cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.home-cta-row .button-link {
  font-size: 14px;
  padding: 9px 18px;
}

.home-stats {
  display: flex;
  gap: 48px;
  margin-top: 46px;
  flex-wrap: wrap;
}

.home-stat strong {
  display: block;
  font-size: 30px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.home-stat span {
  display: block;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mut);
  margin-top: 2px;
}

.home-stat:nth-child(1) strong {
  color: var(--acc);
}

.home-stat:nth-child(2) strong {
  color: var(--cy);
}

.home-stat:nth-child(3) strong {
  color: var(--gr);
}

.home-stat:nth-child(4) strong {
  color: var(--am);
}

/* Featured instance card — hosts the rotating preview showcase. */
.home-preview-showcase {
  align-self: start;
  min-width: 0;
}

.home-preview-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--s);
  border: 1px solid var(--edge);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow);
  transition: opacity 180ms ease;
}

.home-preview-kicker {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--acc);
}

.home-preview-card .viewer-frame {
  border: none;
  padding: 0;
}

.home-preview-card .viewer-frame svg {
  background: var(--svg);
  border-radius: 6px;
}

.home-preview-card .viewer-toolbar {
  display: none;
}

.home-preview-title {
  font-weight: 500;
  font-size: 15px;
}

.home-preview-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 11px;
  color: var(--mut);
}

.home-preview-showcase-swapping .home-preview-card {
  opacity: 0.25;
}

.home-preview-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}

.home-preview-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--div);
}

.home-preview-dot.active {
  background: var(--acc);
}

.home-preview-skeleton-frame {
  display: grid;
  place-items: center;
  aspect-ratio: 100 / 70;
  background: var(--svg);
  border-radius: 6px;
}

.home-preview-skeleton-spinner {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--div);
  border-top-color: var(--acc);
  animation: home-preview-spin 0.9s linear infinite;
}

@keyframes home-preview-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-preview-skeleton-spinner {
    animation: none;
  }
}

/* Catalog rows */
.home-catalog {
  padding: 0 44px 44px;
  max-width: 1440px;
  margin: 0 auto;
}

.home-catalog-heading {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mut);
  font-weight: 500;
  margin: 0 0 4px;
}

.catalog-row {
  display: grid;
  grid-template-columns: 150px 1fr auto 20px;
  gap: 8px 24px;
  align-items: center;
  padding: 14px 0;
  cursor: pointer;
}

.catalog-row-name {
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
}

.catalog-row-desc {
  font-size: 13px;
  color: var(--mut);
}

.catalog-row-tags {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.catalog-row-obj {
  font-size: 12px;
  color: var(--mut);
  text-align: right;
}

.catalog-row-arrow {
  color: var(--acc);
}

.catalog-row:hover .catalog-row-name {
  color: var(--acc);
}

.tag-acc {
  background: var(--acc-t);
  color: var(--acc);
}

.tag-cy {
  background: var(--cy-t);
  color: var(--cy);
}

.tag-gr {
  background: var(--gr-t);
  color: var(--gr);
}

.tag-am {
  background: var(--am-t);
  color: var(--am);
}

.tag-cor {
  background: var(--cor-t);
  color: var(--cor);
}

.home-foot {
  display: flex;
  gap: 24px;
  align-items: center;
  padding-top: 28px;
  font-size: 11.5px;
  color: var(--mut);
  flex-wrap: wrap;
}

.home-foot .home-foot-right {
  margin-left: auto;
  display: flex;
  gap: 16px;
}

.home-foot a:hover {
  color: var(--acc);
}

/* ── Problem / family / explainer grids ─────────────────────────────────── */

.problem-grid,
.family-grid,
.summary-grid,
.detail-grid,
.explainer-grid,
.project-fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.family-grid > .mini-card > .inline-actions,
.problem-grid > .mini-card > .inline-actions {
  margin-top: auto;
}

/* ── Viewer / instance page ──────────────────────────────────────────────── */

.viewer-stage {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.viewer-frame {
  min-width: 0;
}

.viewer-frame svg {
  display: block;
  width: 100%;
  height: auto;
  background: var(--svg);
  border-radius: 12px;
}

.route-line,
.viewer-node {
  cursor: default;
}

.preview-shell,
.preview-summary {
  min-width: 0;
}

.route-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: var(--mut);
}

.legend-swatch {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: none;
}

/* Display Options card — the demo's route-toggle legend. */
.route-toggle-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.route-toggle-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 300px;
  overflow: auto;
}

.route-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 12px;
  padding: 4px;
  border-radius: 6px;
}

.route-toggle:hover {
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}

.route-toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.route-toggle:has(input:not(:checked)) {
  opacity: 0.35;
}

.route-toggle:has(input:focus-visible) {
  outline: 2px solid var(--acc);
  outline-offset: -2px;
}

.route-toggle .route-toggle-label {
  font-weight: 500;
}

.route-toggle .route-toggle-meta {
  margin-left: auto;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
}

/* ── Inspector pane (A7 step 2, instance-list pages) ────────────────────── */

.catalog-with-inspector {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 372px;
  gap: 24px;
  align-items: start;
}

.catalog-table-col {
  min-width: 0;
}

.inspector-pane {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 12px;
  padding: 16px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  overflow-x: hidden;
  min-width: 0;
}

.inspector-kicker {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cy);
}

.inspector-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.inspector-name {
  font-size: 22px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.inspector-preview .viewer-toolbar {
  display: none;
}

.inspector-preview svg {
  display: block;
  width: 100%;
  height: auto;
  background: var(--svg);
  border-radius: 6px;
}

.inspector-preview-skeleton {
  aspect-ratio: 860 / 520;
  background: var(--svg);
  border-radius: 6px;
}

.inspector-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.inspector-stats span {
  display: block;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mut);
}

.inspector-stats strong {
  display: block;
  font-size: 16px;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  margin-top: 1px;
  overflow-wrap: anywhere;
}

.inspector-cost {
  color: var(--gr);
}

.inspector-prov {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 5px 12px;
  font-size: 11.5px;
}

.inspector-prov span:nth-child(odd) {
  color: var(--mut);
}

.inspector-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  margin-top: 4px;
}

.inspector-actions .button-link {
  justify-content: center;
  font-size: 14px;
  padding: 9px 18px;
}

.download-chip {
  display: inline-flex;
  align-items: center;
  font-size: 11.5px;
  padding: 5px 10px;
  border-radius: 8px;
  border: 1px solid var(--acc);
  color: var(--acc);
}

.download-chip:hover {
  background: var(--acc-t);
}

.inspector-hint {
  padding: 12px 8px 0;
}

tr.inspector-row {
  cursor: pointer;
}

tr.inspector-row:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: -2px;
}

tr.inspector-selected,
tbody tr.inspector-selected:hover {
  background:
    linear-gradient(var(--acc-t), var(--acc-t)) no-repeat 0 0 / 100% 100%,
    linear-gradient(
        to right,
        transparent,
        color-mix(in srgb, var(--ink) 8%, transparent) 48px,
        color-mix(in srgb, var(--ink) 8%, transparent) calc(100% - 48px),
        transparent
      )
      no-repeat bottom / 100% 1px;
}

@media (max-width: 1180px) {
  .catalog-with-inspector {
    grid-template-columns: 1fr;
  }

  .inspector-pane {
    display: none;
  }
}

/* ── History ─────────────────────────────────────────────────────────────── */

.history-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline-node {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 14px;
  padding-bottom: 18px;
  position: relative;
}

.timeline-node::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--div), transparent);
}

.timeline-node:last-child::before {
  display: none;
}

.timeline-dot {
  width: 9px;
  height: 9px;
  margin: 5px 0 0 4px;
  border-radius: 50%;
  background: var(--div);
}

.timeline-node[data-current="true"] .timeline-dot {
  background: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-t);
}

.timeline-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 12px;
  padding: 14px 16px;
  min-width: 0;
}

.timeline-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.timeline-date {
  font-size: 12px;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
}

.timeline-summary {
  font-size: 13px;
}

.timeline-counts {
  font-size: 11.5px;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
}

.timeline-initial-tag {
  font-size: 10px;
  letter-spacing: 0.02em;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--am-t);
  color: var(--am);
}

.initial-banner {
  font-size: 12.5px;
  color: var(--mut);
}

.change-section,
.change-subsection {
  border: none;
  padding: 0;
  margin: 0;
}

.change-section > summary,
.change-subsection > summary {
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 0;
  color: var(--ink);
}

.change-subsection {
  margin-left: 12px;
}

.change-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 12px;
  display: grid;
  gap: 4px;
  font-size: 12.5px;
}

.change-add {
  color: var(--gr);
}

.change-remove {
  color: var(--cor);
}

.change-improve .change-delta {
  color: var(--gr);
}

.change-regress .change-delta {
  color: var(--cor);
}

.change-from,
.change-to {
  font-variant-numeric: tabular-nums;
}

.change-delta {
  font-variant-numeric: tabular-nums;
}

/* ── Project ─────────────────────────────────────────────────────────────── */

.project-page {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.project-lead-header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.project-lead-logo {
  width: 72px;
  height: auto;
}

.project-fact-grid {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.project-fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 12px;
  padding: 12px 14px;
  min-width: 0;
}

.project-fact span {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mut);
}

.project-fact strong {
  font-weight: 500;
  font-size: 13.5px;
  overflow-wrap: anywhere;
}

.project-fact .mini-link,
.layout[data-shell="project"] #pageAside .mini-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  max-width: 100%;
  width: fit-content;
  white-space: normal;
  overflow-wrap: anywhere;
}

.project-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}

.project-logo-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--div);
  background: color-mix(in srgb, #ffffff 96%, transparent);
}

.project-logo-card:hover,
.project-logo-card:focus-visible {
  border-color: var(--edge);
}

.project-logo-card img {
  max-height: 44px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.project-logo-card-wide img {
  max-height: 36px;
}

.project-logo-card .project-logo-caption {
  font-size: 10.5px;
  color: #4b4b60;
  text-align: center;
}

.github-mini-link img {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
}

.github-mini-link span {
  min-width: 0;
}

[data-theme="dark"] .github-mini-link img {
  filter: invert(0.7) sepia(1) saturate(4) hue-rotate(220deg);
}

/* ── Prose / markdown ────────────────────────────────────────────────────── */

.context-prose {
  max-width: 88ch;
  margin: 0 auto;
}

.context-prose p {
  margin: 0 0 1rem;
  line-height: 1.7;
}

.context-prose ul {
  margin: 0 0 1rem 1.25rem;
  padding: 0;
  line-height: 1.65;
}

.context-prose li {
  margin: 0.35rem 0;
}

.context-prose a,
.stage a.inline-link {
  color: var(--acc);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.context-prose h1,
.context-prose h2,
.context-prose h3 {
  margin: 1.6rem 0 0.7rem;
}

.context-prose h1:first-child,
.context-prose h2:first-child {
  margin-top: 0;
}

.context-prose blockquote {
  margin: 0 0 1rem;
  padding: 0.2rem 0 0.2rem 1rem;
  border-left: 2px solid var(--edge);
  color: var(--mut);
}

code {
  overflow-wrap: anywhere;
}

.context-prose code,
.explainer-grid code,
.plain-list code,
.card code,
.stage code {
  background: color-mix(in srgb, var(--ink) 6%, transparent);
  border: 1px solid var(--div);
  border-radius: 5px;
  padding: 0.05em 0.35em;
  font-size: 0.92em;
}

.context-prose pre {
  background: var(--s);
  border: 1px solid var(--div);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
}

.context-prose pre code {
  background: transparent;
  border: none;
  padding: 0;
}

/* ── Status pill ─────────────────────────────────────────────────────────── */

.status-pill {
  position: fixed;
  right: 18px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  color: var(--mut);
  background: var(--panel);
  backdrop-filter: blur(8px);
  border-radius: 8px;
  padding: 7px 12px;
  box-shadow: 0 0 0 1px var(--div);
  z-index: 60;
  max-width: min(60vw, 480px);
}

.status-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acc);
  flex: none;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 1180px) {
  .layout,
  .layout[data-shell="editorial"],
  .layout[data-shell="project"] {
    grid-template-columns: 1fr;
  }

  .home-hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 36px 24px 28px;
  }

  .home-catalog {
    padding: 0 24px 32px;
  }
}

@media (max-width: 720px) {
  .app-header {
    gap: 12px;
    padding: 0 14px;
  }

  .header-github {
    display: none;
  }

  .home-hero h1 {
    font-size: 32px;
  }

  .home-stats {
    gap: 24px;
  }

  .catalog-row {
    grid-template-columns: 1fr 20px;
  }

  .catalog-row-name {
    grid-column: 1 / -1;
  }

  .catalog-row-obj {
    display: none;
  }

  .layout {
    padding: 14px 14px 36px;
  }

  .breadcrumbs {
    padding: 8px 14px 0;
  }
}