/* Interactive semantic-layer graph explorer styling.
 * Companion to javascripts/semantic-graph.js. */

.semantic-graph-explorer {
  margin: 1rem 0 1.5rem;
  border: 1px solid var(--md-default-fg-color--lightest, #e0e0e0);
  border-radius: 6px;
  overflow: hidden;
}

.semantic-graph-explorer .sg-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: 0.6rem 0.8rem;
  background: var(--md-code-bg-color, #f5f5f5);
  border-bottom: 1px solid var(--md-default-fg-color--lightest, #e0e0e0);
}

.semantic-graph-explorer .sg-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
}

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

.semantic-graph-explorer .sg-swatch {
  display: inline-block;
  width: 18px;
  height: 0;
  border-top-width: 3px;
  border-top-style: solid;
}

.semantic-graph-explorer .sg-swatch--pseudo {
  border-top-color: #2e7d32;
}

.semantic-graph-explorer .sg-swatch--spine {
  border-top-color: #e65100;
  border-top-style: dashed;
}

.semantic-graph-explorer .sg-swatch--other {
  border-top-color: #607d8b;
}

.semantic-graph-explorer .sg-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  flex: 1 1 auto;
}

.semantic-graph-explorer .sg-chip {
  font-size: 0.72rem;
  line-height: 1.2;
  padding: 0.15rem 0.5rem;
  border: 1.5px solid #90a4ae;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  color: var(--md-default-fg-color, #333);
  transition: background 0.15s, opacity 0.15s;
}

.semantic-graph-explorer .sg-chip--on {
  background: var(--md-default-fg-color--lightest, #eceff1);
}

.semantic-graph-explorer .sg-chip--off {
  opacity: 0.45;
  text-decoration: line-through;
}

.semantic-graph-explorer .sg-reset {
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--md-primary-fg-color, #009485);
  border-radius: 4px;
  background: transparent;
  color: var(--md-primary-fg-color, #009485);
  cursor: pointer;
}

.semantic-graph-explorer .sg-reset:hover {
  background: var(--md-primary-fg-color, #009485);
  color: #fff;
}

#sg-canvas {
  width: 100%;
  height: 620px;
  background:
    radial-gradient(circle, rgba(0, 0, 0, 0.04) 1px, transparent 1px)
    0 0 / 22px 22px;
}

#sg-canvas[data-error]::after {
  content: "Interactive graph unavailable — see the static diagram below.";
  display: block;
  padding: 1rem;
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light, #777);
}

.semantic-graph-explorer .sg-hint {
  margin: 0;
  padding: 0.5rem 0.8rem;
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light, #777);
  border-top: 1px solid var(--md-default-fg-color--lightest, #e0e0e0);
}

/* Dark-mode: lighten the dotted background so nodes stay legible. */
[data-md-color-scheme="slate"] #sg-canvas {
  background:
    radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px)
    0 0 / 22px 22px;
}