/*
 * Mermaid diagrams generated by Stellar keep their intrinsic width.
 * Fit them into the article by default and provide an interactive viewer for
 * diagrams whose labels become too small after fitting.
 */
.md-text .mermaid-shell {
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin: var(--gap-p) 0;
}

.md-text .mermaid-shell > pre.mermaid {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  cursor: zoom-in;
}

.md-text pre.mermaid > svg {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  margin: 0 auto;
}

.mermaid-viewer-trigger {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2rem;
  padding: 0.35rem 0.65rem;
  color: #fff;
  font: inherit;
  font-size: 0.8rem;
  line-height: 1;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  box-shadow: 0 0.25rem 0.75rem rgba(15, 23, 42, 0.18);
  cursor: pointer;
  opacity: 0;
  transform: translateY(-0.2rem);
  transition:
    opacity 160ms ease,
    transform 160ms ease,
    background-color 160ms ease;
}

.mermaid-shell:hover .mermaid-viewer-trigger,
.mermaid-viewer-trigger:focus-visible {
  opacity: 1;
  transform: translateY(0);
}

.mermaid-viewer-trigger:hover {
  background: rgba(15, 23, 42, 0.94);
}

.mermaid-viewer-trigger:focus-visible,
.mermaid-viewer-button:focus-visible {
  outline: 2px solid #38bdf8;
  outline-offset: 2px;
}

body.mermaid-viewer-open {
  overflow: hidden;
}

.mermaid-viewer[hidden] {
  display: none;
}

.mermaid-viewer {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  color: #e5e7eb;
  background: rgba(2, 6, 23, 0.96);
  backdrop-filter: blur(0.5rem);
}

.mermaid-viewer-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 3.5rem;
  padding: 0.65rem 1rem;
  background: rgba(15, 23, 42, 0.92);
  border-bottom: 1px solid rgba(148, 163, 184, 0.24);
}

.mermaid-viewer-title {
  min-width: 0;
  margin-right: auto;
  overflow: hidden;
  font-size: 0.95rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mermaid-viewer-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mermaid-viewer-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 0.65rem;
  color: inherit;
  font: inherit;
  font-size: 0.85rem;
  line-height: 1;
  background: rgba(51, 65, 85, 0.78);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 0.45rem;
  cursor: pointer;
}

.mermaid-viewer-button:hover {
  background: rgba(71, 85, 105, 0.96);
}

.mermaid-viewer-button[data-action="close"] {
  font-size: 1.25rem;
}

.mermaid-viewer-viewport {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.mermaid-viewer-viewport.is-dragging {
  cursor: grabbing;
}

.mermaid-viewer-canvas {
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
  transform-origin: 0 0;
  will-change: transform;
}

.mermaid-viewer-canvas > svg {
  display: block;
  box-sizing: border-box;
  width: 100% !important;
  max-width: none !important;
  height: 100% !important;
  padding: 1rem;
  background: var(--background, #fff);
  border-radius: 0.75rem;
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.3);
}

.mermaid-viewer-help {
  position: absolute;
  right: 1rem;
  bottom: 0.75rem;
  padding: 0.35rem 0.55rem;
  color: #cbd5e1;
  font-size: 0.75rem;
  background: rgba(15, 23, 42, 0.72);
  border-radius: 0.4rem;
  pointer-events: none;
}

@media (max-width: 640px) {
  .mermaid-viewer-trigger {
    top: 0.45rem;
    right: 0.45rem;
    padding: 0.4rem;
    opacity: 0.9;
    transform: none;
  }

  .mermaid-viewer-trigger-label,
  .mermaid-viewer-button-label,
  .mermaid-viewer-help {
    display: none;
  }

  .mermaid-viewer-toolbar {
    min-height: 3rem;
    padding: 0.45rem 0.6rem;
  }

  .mermaid-viewer-actions {
    gap: 0.25rem;
  }

  .mermaid-viewer-button {
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.5rem;
  }
}

@media (hover: none) {
  .mermaid-viewer-trigger {
    opacity: 0.9;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mermaid-viewer-trigger {
    transition: none;
  }
}