/* Wrapper: clips oversized diagrams, use fullscreen for detail */
.diagram-wrapper {
  overflow: hidden;
  max-width: 100%;
  max-height: 350px;
  margin-bottom: 0 !important;
  position: relative;
}

/* Fade-out hint when content is clipped */
.diagram-wrapper.clipped::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(transparent, var(--md-default-bg-color));
  pointer-events: none;
}

/* Mermaid div inside wrapper: no constraints (wrapper handles containment) */
.diagram-wrapper div.mermaid {
  margin-bottom: 0 !important;
}

/* Action bar: sits right below the wrapper, always subtly visible */
.diagram-actions {
  display: flex;
  gap: 2px;
  justify-content: flex-end;
  padding: 2px 4px;
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-top: none;
  border-radius: 0 0 6px 6px;
  margin-bottom: 1em;
  opacity: 0.4;
  transition: opacity 0.2s;
}

/* Show fully on hover of wrapper or action bar */
.diagram-wrapper:hover + .diagram-actions,
.diagram-actions:hover {
  opacity: 1;
}

.diagram-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--md-default-fg-color--light);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  padding: 0;
  transition: background 0.15s, color 0.15s;
}

.diagram-actions button:hover {
  background: var(--md-accent-fg-color--transparent, rgba(0, 0, 0, 0.08));
  color: var(--md-default-fg-color);
}

/* Fullscreen overlay modal */
.diagram-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.diagram-overlay-toolbar {
  display: flex;
  gap: 4px;
  padding: 12px;
  justify-content: center;
}

.diagram-overlay-toolbar button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.15s;
}

.diagram-overlay-toolbar button:hover {
  background: rgba(255, 255, 255, 0.25);
}

.diagram-overlay-content {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 1rem 2rem 2rem;
  width: 100%;
  cursor: pointer;
}

/* The moved mermaid div inside fullscreen overlay */
.diagram-overlay-content div.mermaid {
  background: var(--md-default-bg-color);
  border-radius: 8px;
  padding: 1rem;
  cursor: default;
}