mdbook-bib 0.5.3

mdbook plugin allowing to load and present a bibliography in BibLaTex format in your books and cite its references
Documentation 
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/* ==========================================================================
   mdbook-bib: Modern Bibliography Styles
   Designed to work with mdBook's light and dark themes
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties - Theme Integration
   Uses mdBook's CSS variables for seamless theme switching
   -------------------------------------------------------------------------- */
:root {
  --bib-accent: #3b82f6;
  --bib-accent-hover: #2563eb;
  --bib-cite-bg: rgba(59, 130, 246, 0.1);
  --bib-cite-border: rgba(59, 130, 246, 0.3);
  --bib-abstract-bg: rgba(0, 0, 0, 0.03);
  --bib-divider: rgba(0, 0, 0, 0.1);
  --bib-shadow: rgba(0, 0, 0, 0.08);
  --bib-text-secondary: #6b7280;
}

/* Dark theme adjustments */
.coal .bib-entry,
.navy .bib-entry,
.ayu .bib-entry {
  --bib-abstract-bg: rgba(255, 255, 255, 0.03);
  --bib-divider: rgba(255, 255, 255, 0.1);
  --bib-shadow: rgba(0, 0, 0, 0.3);
  --bib-text-secondary: #9ca3af;
}

/* --------------------------------------------------------------------------
   Inline Citations - The clickable reference markers in text
   -------------------------------------------------------------------------- */
.bib-cite {
  display: inline-flex;
  align-items: center;
  padding: 0.1em 0.45em;
  margin: 0 0.1em;
  font-size: 0.85em;
  font-weight: 500;
  font-family: inherit;
  text-decoration: none;
  color: var(--bib-accent);
  background: var(--bib-cite-bg);
  border: 1px solid var(--bib-cite-border);
  border-radius: 4px;
  transition: all 0.2s ease;
  vertical-align: baseline;
}

.bib-cite:hover {
  background: var(--bib-accent);
  color: white;
  border-color: var(--bib-accent);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px var(--bib-shadow);
  text-decoration: none;
}

.bib-cite:active {
  transform: translateY(0);
}

/* Superscript variant (optional - add class "bib-cite-sup" to use) */
.bib-cite-sup {
  font-size: 0.75em;
  vertical-align: super;
  padding: 0.05em 0.3em;
}

/* --------------------------------------------------------------------------
   Bibliography Entry Container
   -------------------------------------------------------------------------- */
.bib-entry {
  position: relative;
  margin: 1.25rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--bg);
  border-left: 3px solid var(--bib-accent);
  border-radius: 0 8px 8px 0;
  box-shadow: 0 1px 3px var(--bib-shadow);
  transition: all 0.2s ease;
}

.bib-entry:hover {
  box-shadow: 0 4px 12px var(--bib-shadow);
  transform: translateX(2px);
}

/* --------------------------------------------------------------------------
   Reference Header (the clickable summary)
   -------------------------------------------------------------------------- */
.bib-entry details {
  margin: 0;
}

.bib-entry summary {
  cursor: pointer;
  list-style: none;
  display: block;
}

.bib-entry summary::-webkit-details-marker {
  display: none;
}

.bib-entry summary::marker {
  display: none;
}

/* Citation key badge */
.bib-key {
  display: inline-block;
  padding: 0.2em 0.6em;
  margin-right: 0.75rem;
  font-size: 0.8em;
  font-weight: 600;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  color: var(--bib-accent);
  background: var(--bib-cite-bg);
  border: 1px solid var(--bib-cite-border);
  border-radius: 4px;
  vertical-align: middle;
}

/* Index number - for ordered bibliographies */
.bib-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5em;
  height: 1.5em;
  margin-right: 0.5rem;
  font-size: 0.8em;
  font-weight: 600;
  color: white;
  background: var(--bib-accent);
  border-radius: 50%;
  vertical-align: middle;
}

/* Title styling */
.bib-title {
  font-size: 1.1em;
  font-weight: 600;
  font-style: normal;
  line-height: 1.4;
  color: var(--fg);
  display: block;
  margin-top: 0.5rem;
}

.bib-title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--bib-accent);
  transition: border-color 0.2s ease;
}

.bib-title a:hover {
  color: var(--bib-accent);
  border-bottom-style: solid;
}

/* External link icon */
.bib-title a::after {
  content: " ↗";
  font-size: 0.75em;
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Metadata Row (authors, year, etc.)
   -------------------------------------------------------------------------- */
.bib-meta {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.9em;
  color: var(--bib-text-secondary);
}

.bib-meta-item {
  display: inline-flex;
  align-items: center;
}

.bib-authors {
  font-style: italic;
}

/* Expand indicator */
.bib-expand-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
  padding: 0.2em 0.5em;
  font-size: 0.75em;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bib-text-secondary);
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.bib-entry:hover .bib-expand-hint {
  opacity: 1;
}

.bib-expand-arrow {
  transition: transform 0.3s ease;
}

details[open] .bib-expand-arrow {
  transform: rotate(180deg);
}

/* --------------------------------------------------------------------------
   Abstract Section (expandable content)
   -------------------------------------------------------------------------- */
.bib-abstract {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--bib-divider);
  animation: bib-fade-in 0.3s ease;
}

@keyframes bib-fade-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bib-abstract-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.85em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bib-text-secondary);
}

.bib-abstract-content {
  padding: 1rem;
  font-size: 0.95em;
  line-height: 1.7;
  background: var(--bib-abstract-bg);
  border-radius: 6px;
  text-align: justify;
}

/* --------------------------------------------------------------------------
   Copy Button
   -------------------------------------------------------------------------- */
.bib-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35em 0.7em;
  margin-left: 0.75rem;
  font-size: 0.75em;
  font-weight: 500;
  color: var(--bib-text-secondary);
  background: transparent;
  border: 1px solid var(--bib-divider);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bib-copy-btn:hover {
  color: var(--bib-accent);
  border-color: var(--bib-accent);
  background: var(--bib-cite-bg);
}

.bib-copy-btn:active {
  transform: scale(0.95);
}

/* --------------------------------------------------------------------------
   Chapter References Section
   -------------------------------------------------------------------------- */
.bib-chapter-separator {
  height: 0;
  margin: 3rem 0 1.5rem 0;
  border: none;
  border-top: 2px solid var(--bib-divider);
}

.bib-chapter-refs-header {
  margin: 0 0 1.25rem 0;
  padding: 0;
  font-size: 1.4em;
  font-weight: 600;
  color: var(--bib-text-secondary);
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 600px) {
  .bib-entry {
    padding: 1rem;
    margin: 1rem 0;
  }

  .bib-meta {
    flex-direction: column;
    gap: 0.35rem;
  }

  .bib-expand-hint {
    display: none;
  }

  .bib-title {
    font-size: 1em;
  }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
  .bib-entry {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .bib-copy-btn,
  .bib-expand-hint {
    display: none;
  }

  .bib-entry details {
    pointer-events: none;
  }

  .bib-entry details[open] .bib-abstract {
    display: block;
  }
}