/* Click-to-enlarge for Mermaid diagrams (see javascripts/mermaid-zoom.js).
   Material renders Mermaid into a closed shadow root, so we enlarge the host
   element itself with a transform rather than touching the inner SVG. */

.mermaid {
  cursor: zoom-in;
}

.mermaid-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.85);
  cursor: zoom-out;
}

/* The enlarged host. A page-colored background keeps the diagram readable over
   the dark backdrop in both light and dark themes. */
.mermaid--zoomed {
  margin: 0;
  padding: 1rem;
  border-radius: 4px;
  background: var(--md-default-bg-color, #fff);
  transform-origin: center center;
  cursor: zoom-out;
}

.mermaid-lightbox__close {
  position: fixed;
  top: 1rem;
  right: 1.25rem;
  z-index: 2001;
  padding: 0;
  font-size: 2.25rem;
  line-height: 1;
  color: #fff;
  background: transparent;
  border: 0;
  cursor: pointer;
}