/* Styling for the self-hosted node-link graph renderer (assets/js/graphs.js).
   All visual styling lives here — graphs.js sets classes only, never inline
   styles. Inherits the site theme tokens from styles.css (:root). */

.graph-figure {
  margin: 1.5rem 0;
}

.graph-mount {
  display: block;
}

.graph-canvas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: stretch;
}

.graph-svg-wrap {
  flex: 1 1 420px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0.5rem;
}

.graph-svg {
  display: block;
  width: 100%;
  height: auto;
  font-family: inherit;
}

/* Edges */
.graph-edge {
  stroke: var(--line);
  stroke-width: 1.4;
  stroke-opacity: 0.75;
  transition: stroke-opacity 0.15s ease, stroke-width 0.15s ease;
}

.graph-edge.is-active {
  stroke-width: 2.4;
  stroke-opacity: 1;
}

.graph-edge.is-dim {
  stroke-opacity: 0.12;
}

.graph-edge.is-hidden {
  display: none;
}

.graph-edge-label {
  fill: var(--muted);
  font-size: 9px;
  text-anchor: middle;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.graph-figure[data-active] .graph-edge.is-active + .graph-edge-label,
.graph-svg:hover .graph-edge-label {
  opacity: 0.85;
}

.graph-edge-label.is-hidden {
  display: none;
}

/* Nodes */
.graph-node {
  cursor: pointer;
}

.graph-node-dot {
  stroke: var(--paper);
  stroke-width: 1.5;
  fill: var(--soft);
  transition: r 0.15s ease, fill 0.15s ease;
}

.graph-node-label {
  fill: var(--soft);
  font-size: 11px;
  pointer-events: none;
  paint-order: stroke;
  stroke: var(--paper);
  stroke-width: 3px;
  stroke-linejoin: round;
}

.graph-node:hover .graph-node-dot,
.graph-node:focus .graph-node-dot {
  r: 11;
}

.graph-node:focus {
  outline: none;
}

.graph-node:focus .graph-node-dot {
  stroke: var(--red);
  stroke-width: 2.5;
}

.graph-node.is-active .graph-node-dot {
  r: 12;
  stroke: var(--red);
  stroke-width: 2.5;
}

.graph-node.is-dim {
  opacity: 0.28;
}

.graph-node.is-neighbor .graph-node-dot {
  stroke: var(--red);
}

/* Type palette (8 deterministic slots, red-anchored grayscale) */
.graph-type-0 .graph-node-dot { fill: var(--red); }
.graph-type-1 .graph-node-dot { fill: #f5f5f5; }
.graph-type-2 .graph-node-dot { fill: #a1a1aa; }
.graph-type-3 .graph-node-dot { fill: #71717a; }
.graph-type-4 .graph-node-dot { fill: #d4d4d8; }
.graph-type-5 .graph-node-dot { fill: #ff7a7a; }
.graph-type-6 .graph-node-dot { fill: #52525b; }
.graph-type-7 .graph-node-dot { fill: #e4e4e7; }

/* Relation palette (edge strokes + legend swatches) */
.graph-rel-0 { stroke: var(--red); }
.graph-rel-1 { stroke: #a1a1aa; }
.graph-rel-2 { stroke: #71717a; }
.graph-rel-3 { stroke: #d4d4d8; }
.graph-rel-4 { stroke: #ff7a7a; }
.graph-rel-5 { stroke: #52525b; }
.graph-rel-6 { stroke: #e4e4e7; }
.graph-rel-7 { stroke: #ff3b3b; }

/* Detail panel */
.graph-panel {
  flex: 1 1 220px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 1rem;
  color: var(--soft);
  font-size: 0.9rem;
}

.graph-panel-empty {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

.graph-panel-title {
  margin: 0 0 0.5rem;
  color: var(--ink);
  font-size: 1rem;
}

.graph-panel-type {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--surface);
}

.graph-panel-type .graph-node-dot { display: none; }

.graph-panel-meta {
  margin: 0.75rem 0 0;
  color: var(--muted);
}

.graph-panel-link {
  display: inline-block;
  margin-top: 0.85rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--red);
  border-radius: var(--radius);
  color: var(--red);
  text-decoration: none;
  font-weight: 600;
}

.graph-panel-link:hover,
.graph-panel-link:focus {
  background: var(--red);
  color: var(--paper);
}

/* Legend / relation filter */
.graph-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.graph-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--soft);
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
}

.graph-legend-item:hover,
.graph-legend-item:focus-visible {
  border-color: var(--red);
  outline: none;
}

.graph-legend-item.is-off {
  opacity: 0.45;
  text-decoration: line-through;
}

.graph-legend-swatch {
  width: 14px;
  height: 3px;
  border-radius: 2px;
  background: currentColor;
}

/* The legend swatch inherits the relation color via the stroke palette.
   Map stroke tokens to a usable swatch color through currentColor. */
.graph-legend-item.graph-rel-0 { color: var(--red); }
.graph-legend-item.graph-rel-1 { color: #a1a1aa; }
.graph-legend-item.graph-rel-2 { color: #71717a; }
.graph-legend-item.graph-rel-3 { color: #d4d4d8; }
.graph-legend-item.graph-rel-4 { color: #ff7a7a; }
.graph-legend-item.graph-rel-5 { color: #52525b; }
.graph-legend-item.graph-rel-6 { color: #e4e4e7; }
.graph-legend-item.graph-rel-7 { color: #ff3b3b; }

.graph-legend-label {
  color: var(--soft);
}

.graph-mount.is-empty {
  display: none;
}

@media (max-width: 640px) {
  .graph-canvas {
    flex-direction: column;
  }
}