/*
 * Mermaid diagrams follow the active color scheme.
 *
 * Material renders Mermaid with its own theme CSS, which reads these
 * variables, and its ".nodeLabel p" rule overrides any "color:" set by a
 * classDef inside a diagram. So diagrams never set colors themselves; the
 * neutral palette for nodes, strokes and labels lives here, once per scheme.
 */

[data-md-color-scheme="default"] {
  --md-mermaid-node-bg-color: #f4f4f4;
  --md-mermaid-node-fg-color: #333333;
  --md-mermaid-label-fg-color: #000000;
}

[data-md-color-scheme="slate"] {
  --md-mermaid-node-bg-color: hsl(var(--md-hue), 15%, 26%);
  --md-mermaid-node-fg-color: hsl(var(--md-hue), 15%, 65%);
  --md-mermaid-label-fg-color: hsl(var(--md-hue), 15%, 95%);
}

/*
 * Lightbox: a screenshot or diagram opens large in a modal on click.
 * docs/javascripts/lightbox.js builds the modal and sizes diagrams.
 */

.md-typeset img:not(.twemoji),
.lightbox-diagram {
  cursor: zoom-in;
}

.md-typeset img:focus-visible,
.lightbox-diagram:focus-visible {
  outline: 2px solid var(--md-accent-fg-color);
  outline-offset: 2px;
}

html.lightbox-open {
  overflow: hidden;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.75);
  cursor: zoom-out;
}

.lightbox[hidden] {
  display: none;
}

.lightbox__box {
  max-width: 92vw;
  max-height: 88vh;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
  padding: 0.8rem;
  background: var(--md-default-bg-color);
  border-radius: 0.2rem;
  box-shadow: var(--md-shadow-z3);
  cursor: default;
}

.lightbox__image {
  display: block;
  width: auto;
  height: auto;
  max-width: calc(92vw - 1.6rem);
  max-height: calc(88vh - 1.6rem);
}

.lightbox__diagram svg {
  display: block;
}

.lightbox__close {
  position: fixed;
  top: 0.6rem;
  right: 0.6rem;
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox__close:hover,
.lightbox__close:focus-visible {
  background: rgba(255, 255, 255, 0.35);
  outline: none;
}