/* /widgets/pattern-graph.html — D3 force-directed lineage cluster
   Six era-nodes, six move-edges. Hover a node to read the era citation,
   click an edge to expand cross-era manifestations. Tokens only. */

.pg-intro {
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.pg-intro h1 {
  font-size: var(--fs-2xl);
  margin: 0 0 var(--space-3);
  max-width: 22ch;
}

.pg-intro__lede {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.3;
  max-width: 56ch;
  color: var(--fg-soft);
}

.pg-intro__lede em {
  color: var(--accent);
  font-style: normal;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}

/* ------------------------------------------------------------------
   STAGE — graph + side panel
   ------------------------------------------------------------------ */

.pg {
  padding-block: var(--space-5) var(--space-7);
}

.pg__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

@media (max-width: 960px) {
  .pg__layout {
    grid-template-columns: 1fr;
  }
}

.pg__stage {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: var(--space-3);
  position: relative;
}

.pg__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.pg__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
  transition: color 120ms var(--ease-snap),
    border-color 120ms var(--ease-snap), background 120ms var(--ease-snap);
}

.pg__legend-item:hover,
.pg__legend-item:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  outline: none;
}

.pg__legend-item[aria-pressed="true"] {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
}

.pg__legend-swatch {
  width: 14px;
  height: 2px;
  background: currentColor;
  display: inline-block;
}

.pg__canvas-wrap {
  position: relative;
  width: 100%;
}

.pg__svg {
  width: 100%;
  height: auto;
  display: block;
  background: transparent;
  touch-action: pan-y;
}

.pg__hint {
  position: absolute;
  inset: auto var(--space-2) var(--space-2) auto;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  pointer-events: none;
}

/* ------------------------------------------------------------------
   SVG — links + nodes
   ------------------------------------------------------------------ */

.pg__svg .pg-link {
  stroke: var(--border-strong);
  stroke-opacity: 0.65;
  stroke-width: 1.4px;
  fill: none;
  cursor: pointer;
  transition: stroke 120ms var(--ease-snap),
    stroke-opacity 120ms var(--ease-snap),
    stroke-width 120ms var(--ease-snap);
}

.pg__svg .pg-link:hover,
.pg__svg .pg-link.is-active {
  stroke: var(--accent);
  stroke-opacity: 1;
  stroke-width: 2.2px;
}

.pg__svg .pg-link.is-dim {
  stroke-opacity: 0.18;
}

.pg__svg .pg-node {
  cursor: pointer;
}

.pg__svg .pg-node circle {
  fill: var(--bg);
  stroke: var(--fg);
  stroke-width: 1.6px;
  transition: fill 120ms var(--ease-snap), stroke 120ms var(--ease-snap),
    r 160ms var(--ease-snap);
}

.pg__svg .pg-node:hover circle,
.pg__svg .pg-node:focus-visible circle,
.pg__svg .pg-node.is-active circle {
  fill: var(--accent);
  stroke: var(--accent);
}

.pg__svg .pg-node.is-dim circle {
  opacity: 0.35;
}

.pg__svg .pg-node text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  fill: var(--fg);
  paint-order: stroke;
  stroke: var(--bg);
  stroke-width: 3px;
  pointer-events: none;
  user-select: none;
}

.pg__svg .pg-node.is-dim text {
  opacity: 0.4;
}

/* ------------------------------------------------------------------
   PANEL — citations + manifestations
   ------------------------------------------------------------------ */

.pg__panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: var(--space-4);
  min-height: 14rem;
}

.pg__panel-empty {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--muted);
  margin: 0;
}

.pg__panel-kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin: 0 0 var(--space-2);
}

.pg__panel h2 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}

.pg__panel-meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin: 0 0 var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pg__panel-meta span + span::before {
  content: "·";
  margin-right: var(--space-2);
  color: var(--border-strong);
}

.pg__panel p,
.pg__panel li {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--fg-soft);
}

.pg__panel-cite {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--muted);
}

.pg__manifest {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.pg__manifest li {
  border-left: 2px solid var(--accent);
  padding: 0 0 0 var(--space-3);
}

.pg__manifest-era {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}