/*
 * mdbook-swirly
 *
 * Diagrams are rendered once, at build time, but mdBook switches theme in the
 * browser. The "adaptive" theme emits every colour as `currentColor` and no
 * background, so these few rules are what tie a diagram to whichever theme the
 * reader has chosen -- including custom themes, as long as they define mdBook's
 * standard --fg and --bg variables.
 *
 * Installed by `mdbook-swirly install`. Safe to edit; it is not overwritten
 * unless you pass --force.
 */

svg.swirly {
  display: block;
  margin: 1.25em auto;
  max-width: 100%;
  height: auto;
  color: var(--fg);
}

/*
 * The only <rect> a grid diagram emits is a cell box, and it has to read as
 * opaque so the dashed transaction grid stops at its edges. A CSS rule beats
 * the presentation attribute on the element, which exists only as a
 * light-background fallback for when this stylesheet is missing.
 */
svg.swirly rect {
  fill: var(--bg);
}

@media print {
  svg.swirly {
    color: #000;
  }

  svg.swirly rect {
    fill: #fff;
  }
}