.mermaid-viewer {
  position: relative;
  margin: 1.5rem 0;
  overflow: hidden;

  --mermaid-canvas-height: 500px;

  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;

  background: var(--md-default-bg-color);
}

.mermaid-height,
[data-mermaid-height]:empty {
  display: none;
}

.mermaid-toolbar {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 2;

  display: flex;
  justify-content: flex-end;
  gap: 0.35rem;

  padding: 0.35rem;

  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.45rem;
  background: var(--md-code-bg-color);
  box-shadow: 0 0.35rem 1rem rgb(0 0 0 / 12%);

  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease;
}

.mermaid-viewer:hover .mermaid-toolbar,
.mermaid-viewer:focus-within .mermaid-toolbar,
.mermaid-toolbar:hover {
  opacity: 1;
  pointer-events: auto;
}

.mermaid-toolbar-button {
  min-width: 2.25rem;
  height: 2rem;
  padding: 0 0.65rem;

  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.3rem;

  color: var(--md-default-fg-color);
  background: var(--md-default-bg-color);

  font: inherit;
  font-size: 0.7rem;
  cursor: pointer;
}

.mermaid-toolbar-button:hover {
  background: var(--md-accent-fg-color);
  color: var(--md-accent-bg-color);
}

.mermaid-toolbar-button:focus-visible {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}

.mermaid-canvas {
  width: 100%;
  height: var(--mermaid-canvas-height);
  overflow: hidden;

  cursor: grab;
  touch-action: none;
}

.mermaid-canvas:active {
  cursor: grabbing;
}

.mermaid-canvas .mermaid {
  width: 100%;
  height: 100%;
}

.mermaid-canvas svg {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none !important;
}

/* Full-screen appearance */

.mermaid-viewer:fullscreen {
  width: 100vw;
  height: 100vh;

  border: 0;
  border-radius: 0;
  background: var(--md-default-bg-color);
}

.mermaid-viewer:fullscreen .mermaid-canvas {
  width: 100%;
  height: 100vh;
}

/* Mobile layout */

@media screen and (max-width: 600px) {
  .mermaid-viewer {
    --mermaid-canvas-height: 350px;
  }

  .mermaid-toolbar {
    top: 0.35rem;
    right: 0.35rem;
  }
}