/* ---------------------------------------------------------------------------
   Contributor byline
   ---------------------------------------------------------------------------
   Credits a chapter to a guest author. Place directly under the chapter H1:

     ::: {.pattern-byline}
     Pattern by **[Name](https://example.org)** · Institution
     :::

   The accent colour can be set per chapter by overriding --byline-accent:

     ::: {.pattern-byline style="--byline-accent: #006548;"}

   Defaults to University of Sheffield brand violet, taken from the hex values
   used on sheffield.ac.uk (dark violet #24135f, electric violet #7100ff).
--------------------------------------------------------------------------- */

.pattern-byline {
  --byline-accent: #24135f;
  --byline-accent-hover: #7100ff;

  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0.4rem 0 2rem;
  padding: 0.7rem 0.95rem;
  border-left: 4px solid var(--byline-accent);
  border-radius: 0 0.25rem 0.25rem 0;
  background: #f0eef4; /* fallback for browsers without color-mix() */
  background: color-mix(in srgb, var(--byline-accent) 7%, transparent);
  font-size: 0.92rem;
  line-height: 1.45;
  /* darker than Bootstrap's muted grey, to hold 4.5:1 against the tint */
  color: #5c636a;
}

/* Author glyph. Drawn as a mask rather than a background image so it picks up
   --byline-accent instead of hardcoding the fill in the SVG. */
.pattern-byline::before {
  content: "";
  flex: 0 0 auto;
  width: 1.05rem;
  height: 1.05rem;
  background-color: var(--byline-accent);
  --byline-icon: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M8 8a3 3 0 1 0 0-6 3 3 0 0 0 0 6Zm2 1H6a4 4 0 0 0-4 4 1 1 0 0 0 1 1h10a1 1 0 0 0 1-1 4 4 0 0 0-4-4Z"/></svg>');
  -webkit-mask: var(--byline-icon) center / contain no-repeat;
  mask: var(--byline-icon) center / contain no-repeat;
}

.pattern-byline p {
  margin: 0;
}

.pattern-byline strong {
  font-weight: 600;
  color: var(--bs-body-color, #373a3c);
}

.pattern-byline a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--byline-accent) 45%, transparent);
}

.pattern-byline a:hover {
  color: var(--byline-accent-hover);
  border-bottom-color: currentColor;
}