:root {
  color-scheme: light;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-subtle: #f1f5f9;
  --color-foreground: #172033;
  --color-muted-text: #526075;
  --color-border: #cbd5e1;
  --color-primary: #334155;
  --color-accent: #155eef;
  --color-accent-dark: #0b3b9d;
  --color-review-bg: #fff7d6;
  --color-review-border: #8a5b00;
  --color-error-bg: #fff1f2;
  --color-error: #9f1239;
  --color-focus: #0b62d6;
  --kind-entity: #155eef;
  --kind-assertion: #8b3a8f;
  --kind-ontology: #087f5b;
  --kind-provenance: #9a4d00;
  --kind-metadata: #526075;
  --kind-navigation: #6b7280;
  --shadow: 0 1px 2px rgb(15 23 42 / 8%), 0 10px 24px rgb(15 23 42 / 5%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-background);
  color: var(--color-foreground);
  font-size: 1rem;
  line-height: 1.55;
}

a { color: var(--color-accent-dark); }
a:hover { color: var(--color-accent); }

button,
input,
select { font: inherit; }

button,
select,
input[type="search"] {
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-surface);
  color: var(--color-foreground);
}

button {
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  font-weight: 650;
}

button:hover { border-color: var(--color-accent); }
button:active { background: var(--color-surface-subtle); }
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}
button:disabled:hover { border-color: var(--color-border); }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: 0.4rem;
  background: var(--color-foreground);
  color: #fff;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.brand {
  color: var(--color-foreground);
  font-size: 1.3rem;
  font-weight: 800;
  text-decoration: none;
}

.product-name {
  margin-left: 0.65rem;
  color: var(--color-muted-text);
  font-weight: 650;
}

.repository-link { font-weight: 650; }

main {
  width: min(1800px, 100%);
  margin: 0 auto;
  padding: 1.5rem clamp(1rem, 3vw, 2.5rem) 3rem;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.25rem;
  color: var(--color-accent-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 { line-height: 1.2; }

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.25rem);
  letter-spacing: -0.035em;
}

h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }

.intro-copy {
  max-width: 72ch;
  margin: 0.75rem 0 0;
  color: var(--color-muted-text);
  font-size: 1.05rem;
}

.release-card,
.controls,
.visualization,
.details {
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
  box-shadow: var(--shadow);
}

.release-card { padding: 1rem; }

.status-badge {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--color-review-border);
  border-radius: 999px;
  background: var(--color-review-bg);
  color: #5f3b00;
  font-size: 0.82rem;
  font-weight: 800;
}

.release-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 1rem 0 0;
}

.release-facts div { min-width: 0; }
.release-facts dt { color: var(--color-muted-text); font-size: 0.78rem; font-weight: 700; }
.release-facts dd { margin: 0.1rem 0 0; font-weight: 750; overflow-wrap: anywhere; }

.browser-shell {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(440px, 1fr) minmax(260px, 340px);
  gap: 1rem;
  align-items: start;
  min-height: 680px;
}

.controls,
.details { padding: 1rem; }

.controls h2,
.details h2 { margin: 0 0 1rem; }

label,
legend {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.88rem;
  font-weight: 750;
}

input[type="search"],
select {
  width: 100%;
  padding: 0.55rem 0.7rem;
}

.field-help,
.panel-help {
  margin: 0.35rem 0 1rem;
  color: var(--color-muted-text);
  font-size: 0.82rem;
}

fieldset {
  margin: 1rem 0;
  padding: 0;
  border: 0;
}

.kind-option {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  cursor: pointer;
}

.kind-option input { width: 18px; height: 18px; }

.kind-swatch {
  width: 0.75rem;
  height: 0.75rem;
  flex: 0 0 auto;
  border: 2px solid currentColor;
  border-radius: 50%;
  background: currentColor;
}

.control-actions,
.view-switcher {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.view-switcher button.active {
  border-color: var(--color-accent-dark);
  background: var(--color-accent-dark);
  color: #fff;
}

.results {
  margin-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.results h3 { margin-bottom: 0.5rem; }

.result-list {
  display: grid;
  max-height: 280px;
  gap: 0.35rem;
  overflow: auto;
}

.result-button {
  min-height: 48px;
  padding: 0.5rem 0.65rem;
  text-align: left;
}

.result-button span { display: block; }
.result-meta { color: var(--color-muted-text); font-size: 0.78rem; font-weight: 500; }

.visualization {
  display: flex;
  width: 100%;
  height: clamp(600px, 72vh, 820px);
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
}

.panel-heading {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.panel-heading h2,
.panel-heading p { margin: 0; }
.panel-heading p { margin-top: 0.2rem; }

#graph-view {
  position: relative;
  min-height: 600px;
  flex: 1;
}

#cy {
  position: absolute;
  inset: 0;
  background-color: #fbfdff;
  background-image: radial-gradient(#dbe4ee 1px, transparent 1px);
  background-size: 18px 18px;
}

.legend {
  position: absolute;
  z-index: 2;
  right: 0.75rem;
  bottom: 0.75rem;
  display: flex;
  max-width: calc(100% - 1.5rem);
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  background: rgb(255 255 255 / 94%);
  color: var(--color-muted-text);
  font-size: 0.75rem;
}

.legend-item { display: inline-flex; align-items: center; gap: 0.3rem; }

.table-wrap {
  max-height: 600px;
  overflow: auto;
}

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
caption { padding: 0.8rem; text-align: left; font-weight: 700; }
th,
td { padding: 0.65rem; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
th { position: sticky; z-index: 1; top: 0; background: var(--color-surface-subtle); }
.table-member { min-height: 44px; padding: 0.4rem 0.55rem; text-align: left; }

.details {
  min-width: 0;
  max-height: clamp(600px, 72vh, 820px);
  overflow: auto;
}

.empty-state,
.message {
  padding: 1rem;
  border-radius: 0.55rem;
  background: var(--color-surface-subtle);
  color: var(--color-muted-text);
}

.message { margin: 1rem 0; }
.message h2 { margin-top: 0; }
.message-error { border: 1px solid var(--color-error); background: var(--color-error-bg); color: var(--color-error); }

.member-kicker {
  margin: 0;
  color: var(--color-muted-text);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.member-title { margin: 0.15rem 0 0; overflow-wrap: anywhere; }
.canonical-id { margin: 0.25rem 0 1rem; color: var(--color-muted-text); font-family: ui-monospace, monospace; font-size: 0.8rem; overflow-wrap: anywhere; }
.definition { margin: 0 0 1rem; }

.details-list { margin: 0; }
.details-list div { padding: 0.6rem 0; border-top: 1px solid var(--color-border); }
.details-list dt { color: var(--color-muted-text); font-size: 0.78rem; font-weight: 750; text-transform: uppercase; }
.details-list dd { margin: 0.15rem 0 0; overflow-wrap: anywhere; }

.value-list { margin: 0.2rem 0 0; padding-left: 1.1rem; }
.status-text { font-weight: 750; }

footer {
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted-text);
  font-size: 0.85rem;
}

footer p { max-width: 90ch; margin: 0 auto; }

[hidden] { display: none !important; }

@media (max-width: 1180px) {
  .browser-shell { grid-template-columns: minmax(240px, 300px) minmax(0, 1fr); }
  .details { grid-column: 1 / -1; max-height: none; }
}

@media (max-width: 760px) {
  .site-header { align-items: flex-start; }
  .product-name { display: block; margin: 0; }
  .intro { grid-template-columns: 1fr; gap: 1rem; }
  .browser-shell { grid-template-columns: 1fr; }
  .visualization { min-height: 580px; }
  #graph-view { min-height: 500px; }
  .details { grid-column: auto; }
  .release-facts { gap: 0.4rem; }
  .panel-heading { align-items: flex-start; }
}

@media (prefers-reduced-motion: no-preference) {
  button,
  a,
  .skip-link { transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --color-background: #0d1420;
    --color-surface: #151f2e;
    --color-surface-subtle: #1d2939;
    --color-foreground: #f1f5f9;
    --color-muted-text: #b9c4d3;
    --color-border: #475569;
    --color-accent: #78a7ff;
    --color-accent-dark: #a9c6ff;
    --color-review-bg: #3d2d09;
    --color-review-border: #e5ad38;
    --color-focus: #8bb8ff;
    --shadow: none;
  }

  .status-badge { color: #ffe5aa; }
  #cy { background-color: #111b29; background-image: radial-gradient(#334155 1px, transparent 1px); }
  .legend { background: rgb(21 31 46 / 96%); }
  .message-error { background: #3b1620; color: #fecdd3; }
}