#mermaid-zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease-in;
}

#mermaid-zoom-overlay.mermaid-zoom-visible {
  opacity: 1;
}

#mermaid-zoom-overlay.mermaid-zoom-fade-out {
  opacity: 0;
}

.mermaid-zoom-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  z-index: 10000;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  opacity: 0.7;
  transition: opacity 0.15s;
}

.mermaid-zoom-close:hover {
  opacity: 1;
}

.mermaid-zoom-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  pointer-events: none;
  user-select: none;
}

.mermaid-zoom-container {
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

.mermaid-zoom-container svg {
  max-width: none;
  max-height: none;
  shape-rendering: geometricPrecision;
  text-rendering: optimizeLegibility;
}

/* Improve SVG readability in zoom overlay */
.mermaid-zoom-container .mermaid {
  background: #fff;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* Ensure text and colors render crisply */
.mermaid-zoom-container svg text {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.mermaid-zoom-container svg * {
  vector-effect: non-scaling-stroke;
}

.mermaid {
  cursor: pointer;
  position: relative;
}

.mermaid:hover::after {
  content: "\1F50D";
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 1.2rem;
  opacity: 0.5;
  pointer-events: none;
}