/* === Diagrams — Mermaid Overrides, SVG Hover, Glow Effects === */

/* --- Mermaid container --- */
.mermaid {
  display: flex;
  justify-content: center;
  overflow-x: auto;
}
.mermaid svg {
  max-width: 100%;
  height: auto;
}

/* --- Node hover glow --- */
.mermaid .node rect,
.mermaid .node circle,
.mermaid .node polygon {
  transition: filter 0.25s ease, stroke-width 0.25s ease, stroke 0.25s ease;
  cursor: pointer;
}
.mermaid .node:hover rect,
.mermaid .node:hover circle,
.mermaid .node:hover polygon {
  filter: drop-shadow(0 0 12px rgba(184, 149, 48, 0.5));
  stroke: var(--accent-primary) !important;
  stroke-width: 2px !important;
}

/* --- Edge/arrow hover bolding --- */
.mermaid .edgePath path {
  transition: stroke-width 0.25s ease, stroke 0.25s ease;
}
.mermaid .edgePath.highlighted path {
  stroke: var(--accent-glow) !important;
  stroke-width: 2.5px !important;
}

/* --- Cluster / subgraph hover --- */
.mermaid .cluster rect {
  transition: filter 0.25s ease, stroke 0.25s ease;
}
.mermaid .cluster:hover rect {
  filter: drop-shadow(0 0 8px rgba(184, 149, 48, 0.3));
  stroke: rgba(184, 149, 48, 0.4) !important;
}

/* --- Node text styling --- */
.mermaid .nodeLabel {
  font-family: var(--font-main) !important;
  font-size: 0.8rem !important;
}

/* --- Sequence diagram participant boxes --- */
.mermaid .actor {
  transition: filter 0.25s ease;
  cursor: pointer;
}
.mermaid .actor:hover {
  filter: drop-shadow(0 0 10px rgba(184, 149, 48, 0.4));
}

/* --- ER diagram entity hover --- */
.mermaid .er.entityBox {
  transition: filter 0.25s ease;
  cursor: pointer;
}
.mermaid .er.entityBox:hover {
  filter: drop-shadow(0 0 10px rgba(184, 149, 48, 0.4));
}

/* --- Info bubble for diagram nodes --- */
.diagram-info-bubble {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5), var(--glow-shadow);
  z-index: 50;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  max-width: 320px;
  line-height: 1.5;
}
.diagram-info-bubble.visible { opacity: 1; }
.diagram-info-bubble .bubble-title {
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 0.25rem;
  font-size: 0.85rem;
}

/* --- Interactive SVG flow diagram --- */
.flow-diagram-svg {
  width: 100%;
  overflow-x: auto;
}
.flow-diagram-svg svg {
  width: 100%;
  min-width: 900px;
}
.flow-diagram-svg .fd-node {
  cursor: pointer;
  transition: filter 0.2s ease;
}
.flow-diagram-svg .fd-node:hover {
  filter: drop-shadow(0 0 10px rgba(184, 149, 48, 0.6));
}
.flow-diagram-svg .fd-node:hover rect,
.flow-diagram-svg .fd-node:hover .fd-node-bg {
  stroke: var(--accent-primary);
  stroke-width: 2;
}
.flow-diagram-svg .fd-arrow {
  transition: stroke-width 0.2s ease, stroke 0.2s ease;
}
.flow-diagram-svg .fd-arrow.highlighted {
  stroke: var(--accent-glow);
  stroke-width: 2.5;
}
.flow-diagram-svg .fd-lane-label {
  font-size: 11px;
  font-weight: 600;
  fill: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.flow-diagram-svg .fd-node-text {
  font-size: 9px;
  fill: var(--text-primary);
  font-family: var(--font-main);
}
.flow-diagram-svg .fd-badge {
  font-size: 8px;
  fill: var(--accent-primary);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* --- Diagram loading indicator --- */
.diagram-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.diagram-loading::before {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  margin-right: 0.75rem;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}