.mermaid {
  background-color: var(--bg-color);
}

.mermaid-container {
  position: relative;
}

.mermaid-enlarge {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 10;
  background: var(--bg-color, #fff);
  border: 1px solid var(--border-color, #ddd);
  border-radius: 4px;
  padding: 4px 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  color: var(--text-color, #333);
  line-height: 1;
}

.mermaid-container:hover .mermaid-enlarge {
  opacity: 0.7;
}

.mermaid-enlarge:hover {
  opacity: 1 !important;
}

.mermaid-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: var(--bg-color, #fff);
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.mermaid-fullscreen .mermaid-enlarge {
  position: fixed;
  top: 16px;
  right: 16px;
  opacity: 1;
}

.mermaid-fullscreen .mermaid svg {
  width: 95vw;
  height: 90vh;
}