:root {
  --gf-node: #2e7d32;
  --gf-node-border: #1b5e20;
  --enum-node: #ef6c00;
  --enum-node-border: #e65100;
  --external-node: #5e35b1;
  --external-node-border: #4527a0;
  --edge-subclass: #546e7a;
  --edge-object: #1565c0;
  --edge-datatype: #6d4c41;
  --panel-bg: #fafafa;
  --panel-border: #ddd;
  --text: #212121;
  --muted: #616161;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: #fff;
}

body.embed {
  overflow: hidden;
}

.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
}

body.embed .layout {
  grid-template-columns: 1fr;
}

.sidebar {
  border-right: 1px solid var(--panel-border);
  background: var(--panel-bg);
  padding: 12px 14px;
  overflow: auto;
}

body.embed .sidebar {
  display: none;
}

.sidebar h1 {
  font-size: 1rem;
  margin: 0 0 8px;
}

.sidebar p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.control {
  margin-bottom: 12px;
}

.control label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.control input[type="search"],
.control select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  font-size: 0.9rem;
}

.control-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

button {
  border: 1px solid var(--panel-border);
  background: #fff;
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 0.85rem;
  cursor: pointer;
}

button:hover {
  background: #f0f0f0;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.legend {
  margin-top: 16px;
  font-size: 0.82rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.details {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--panel-border);
  font-size: 0.85rem;
}

.details h2 {
  font-size: 0.95rem;
  margin: 0 0 6px;
}

.details .uri {
  word-break: break-all;
  color: var(--muted);
  font-size: 0.78rem;
}

.details .comment {
  margin-top: 8px;
  line-height: 1.4;
}

.graph-shell {
  position: relative;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  background:
    linear-gradient(#eceff1 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, #eceff1 1px, transparent 1px) 0 0 / 24px 24px,
    #fafafa;
}

body.embed .graph-shell {
  height: 100vh;
}

.toolbar {
  position: absolute;
  top: 10px;
  right: 10px;
  left: 10px;
  z-index: 2;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.embed-toolbar input[type="search"] {
  min-width: 180px;
  flex: 1;
  max-width: 280px;
  padding: 7px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  font-size: 0.85rem;
}

.embed-toolbar select {
  min-width: 140px;
  padding: 7px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  font-size: 0.85rem;
}

.embed-toolbar .toggle {
  font-size: 0.82rem;
  white-space: nowrap;
}

#graph {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#graph.dragging {
  cursor: grabbing;
}

#graph.dragging-node {
  cursor: move;
}

.node rect {
  stroke-width: 1.5px;
}

.node text {
  font-size: 12px;
  pointer-events: none;
  fill: #fff;
  font-weight: 600;
}

.node.kind-gf rect {
  fill: var(--gf-node);
  stroke: var(--gf-node-border);
}

.node.kind-enum rect {
  fill: var(--enum-node);
  stroke: var(--enum-node-border);
}

.node.kind-external rect {
  fill: var(--external-node);
  stroke: var(--external-node-border);
}

.node.dimmed rect {
  opacity: 0.1;
}

.node.dimmed text {
  opacity: 0.2;
}

.node.selected rect {
  stroke-width: 3px;
  filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.25));
}

.edge {
  fill: none;
}

.edge.kind-subClassOf {
  stroke: var(--edge-subclass);
  stroke-width: 3.4px;
}

.edge.kind-subClassOfReverse {
  stroke: #7b5ea7;
  stroke-width: 1.6px;
  stroke-dasharray: 5 4;
  opacity: 0.82;
}

.edge.kind-equivalentClass {
  stroke: #009688;
  stroke-width: 2.1px;
  stroke-dasharray: 7 3;
}

.edge.kind-objectProperty {
  stroke: var(--edge-object);
  stroke-width: 1.25px;
  stroke-dasharray: 6 4;
  opacity: 0.9;
}

.edge.kind-datatypeProperty {
  stroke: var(--edge-datatype);
  stroke-width: 1.25px;
  stroke-dasharray: 2 4;
  opacity: 0.9;
}

.edge.dimmed {
  opacity: 0.08;
}

.edge-label.dimmed {
  opacity: 0.1;
}

.edge-label {
  font-size: 10px;
  fill: var(--muted);
  pointer-events: none;
}

.hint {
  position: absolute;
  left: 12px;
  bottom: 10px;
  z-index: 2;
  font-size: 0.78rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.85);
  padding: 4px 8px;
  border-radius: 4px;
}