/* Styling for the hand-authored SVG figures in these pages.
 *
 * Shapes and labels are drawn in `currentColor`, so one set of geometry
 * serves both palettes: whatever text colour Material sets on the page is
 * what the diagram inherits, and a surface is an opacity of that same
 * colour rather than a second value to keep in step.
 *
 * Only four things are real tokens, because each needs a different value on
 * a light and a dark ground instead of an opacity: the surface fill, the
 * rule colour, the accent that marks the one element a figure is about, and
 * the tint behind an accented row. Everything else follows the page.
 *
 * Material's own `--md-*` variables are deliberately not used for the
 * accent. `--md-primary-fg-color` is the same teal in both schemes, and it
 * is chosen to sit under white header text, so it is too dark to read as a
 * line on a dark ground.
 */

:root {
  --se-fig-surface: rgba(0, 0, 0, 0.035);
  --se-fig-rule: rgba(0, 0, 0, 0.3);
  --se-fig-accent: #00796b;
  --se-fig-accent-wash: rgba(0, 121, 107, 0.09);
}

[data-md-color-scheme="slate"] {
  --se-fig-surface: rgba(255, 255, 255, 0.05);
  --se-fig-rule: rgba(255, 255, 255, 0.32);
  --se-fig-accent: #4ddbc4;
  --se-fig-accent-wash: rgba(77, 219, 196, 0.1);
}

/* A narrow screen scrolls the figure sideways rather than scaling its labels
 * down to nothing: `min-width` holds the drawing at a legible size and the
 * wrapper takes the overflow. */
.se-fig {
  margin: 1.8em 0;
}

.se-fig .se-fig-scroll {
  overflow-x: auto;
}

.se-fig svg {
  display: block;
  width: 100%;
  min-width: 680px;
  height: auto;
  margin: 0 auto;
}

/* Material centres figures and italicises captions at 24rem, which is too
 * narrow and too decorative for a caption that states what the figure
 * claims. */
.md-typeset .se-fig figcaption {
  max-width: 44rem;
  margin: 0.9em auto 0;
  font-style: normal;
  font-size: 0.75rem;
  line-height: 1.5;
  text-align: left;
  opacity: 0.8;
}

/* Boxes and the faint frame that groups a set of them. */
.se-fig .se-box {
  fill: var(--se-fig-surface);
  stroke: var(--se-fig-rule);
  stroke-width: 1;
}

.se-fig .se-box-em {
  fill: var(--se-fig-accent-wash);
  stroke: var(--se-fig-accent);
  stroke-width: 1.5;
}

.se-fig .se-frame {
  fill: none;
  stroke: var(--se-fig-rule);
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.7;
}

/* Text. Identifiers are set in the code face, prose in the body face. */
.se-fig .se-id {
  fill: currentColor;
  font-family: var(--md-code-font-family, ui-monospace, monospace);
  font-size: 13px;
  font-weight: 600;
}

.se-fig .se-id-sm {
  fill: currentColor;
  font-family: var(--md-code-font-family, ui-monospace, monospace);
  font-size: 11.5px;
  font-weight: 600;
}

.se-fig .se-ttl {
  fill: currentColor;
  font-family: var(--md-text-font-family, system-ui, sans-serif);
  font-size: 12.5px;
  font-weight: 600;
}

.se-fig .se-sub {
  fill: currentColor;
  font-family: var(--md-text-font-family, system-ui, sans-serif);
  font-size: 11.5px;
  opacity: 0.72;
}

.se-fig .se-note {
  fill: currentColor;
  font-family: var(--md-text-font-family, system-ui, sans-serif);
  font-size: 11.5px;
  opacity: 0.78;
}

.se-fig .se-note-em {
  fill: var(--se-fig-accent);
  font-family: var(--md-text-font-family, system-ui, sans-serif);
  font-size: 11.5px;
  font-weight: 600;
  opacity: 1;
}

.se-fig .se-cap {
  fill: currentColor;
  font-family: var(--md-text-font-family, system-ui, sans-serif);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  opacity: 0.55;
}

/* Edges, and the arrowheads drawn as polygons so there is no `url(#id)`
 * fragment to survive Material's instant navigation. */
.se-fig .se-edge {
  fill: none;
  stroke: var(--se-fig-rule);
  stroke-width: 1.4;
}

.se-fig .se-edge-em {
  fill: none;
  stroke: var(--se-fig-accent);
  stroke-width: 1.8;
}

.se-fig .se-edge-weak {
  fill: none;
  stroke: var(--se-fig-accent);
  stroke-width: 1.8;
  stroke-dasharray: 6 4;
}

.se-fig .se-head {
  fill: var(--se-fig-rule);
  stroke: none;
}

.se-fig .se-head-em {
  fill: var(--se-fig-accent);
  stroke: none;
}