.post-graph {
  position: relative;
  margin: 2rem 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-card) 88%, transparent);
  overflow: hidden;
}

.post-graph-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.post-graph-header h3 {
  margin: 0;
  font-size: 1.15rem;
}

.post-graph-header p {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.post-graph-controls {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.post-graph-controls button {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  cursor: pointer;
}

.post-graph-controls button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.post-graph-canvas {
  display: block;
  width: 100%;
  height: auto;
  min-height: 320px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 20% 20%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 28%),
    color-mix(in srgb, var(--bg-body) 72%, transparent);
}

.post-graph-edges line {
  stroke: color-mix(in srgb, var(--text-muted) 42%, transparent);
  stroke-width: 1.2;
  transition: opacity 0.18s, stroke 0.18s, stroke-width 0.18s;
}

.post-graph-edges line.is-active {
  stroke: var(--accent);
  stroke-width: 2.4;
  opacity: 0.95;
}

.post-graph-node {
  cursor: pointer;
  transition: opacity 0.18s;
}

.post-graph-node circle {
  fill: var(--accent);
  stroke: color-mix(in srgb, var(--bg-body) 88%, white);
  stroke-width: 1.5;
}

.post-graph-node text {
  fill: var(--text-main);
  font-size: 11px;
  paint-order: stroke;
  stroke: var(--bg-body);
  stroke-width: 3px;
  stroke-linejoin: round;
}

.post-graph-node.is-dimmed,
.post-graph-edges line.is-dimmed {
  opacity: 0.15;
}

.post-graph-empty {
  fill: var(--text-muted);
  font-size: 14px;
}

.post-graph-tooltip {
  position: absolute;
  z-index: 2;
  max-width: 220px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text-main);
  box-shadow: 0 12px 30px rgb(0 0 0 / 18%);
  font-size: 0.8rem;
  pointer-events: none;
}

@media (max-width: 640px) {
  .post-graph-header {
    display: block;
  }

  .post-graph-controls {
    justify-content: flex-start;
    margin-top: 0.75rem;
  }
}