/*
 * Citum Interactive Styles
 * SPDX-License-Identifier: MPL-2.0
 */

:root {
  /* Colors */
  --citum-citation-color: #0066cc;
  --citum-citation-hover-bg: rgba(0, 102, 204, 0.1);
  --citum-highlight-bg: #fff9c4;
  --citum-highlight-border: #fbc02d;
  --citum-tooltip-bg: #333;
  --citum-tooltip-color: #fff;
  
  /* Sidebar */
  --citum-sidebar-width: 300px;
  --citum-sidebar-gap: 2rem;
  
  /* Spacing */
  --citum-entry-spacing: 1rem;
  --citum-transition-speed: 0.3s;
}

/* Citations */
.citum-citation {
  color: var(--citum-citation-color);
  text-decoration: none;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: all var(--citum-transition-speed) ease;
  padding: 0 4px;
  margin: 0 -2px;
  border-radius: 4px;
  font-weight: 500;
}

.citum-citation:hover {
  background-color: var(--citum-citation-hover-bg);
  border-bottom-color: var(--citum-citation-color);
}

.citum-citation.is-highlighted {
  background-color: var(--citum-highlight-bg);
  box-shadow: 0 0 0 2px var(--citum-highlight-bg);
  color: #000;
}

/* Bibliography */
.citum-bibliography {
  margin-top: 3rem;
  line-height: 1.6;
  border-top: 1px solid #eee;
  padding-top: 2rem;
}

.citum-entry {
  margin-bottom: var(--citum-entry-spacing);
  padding: 0.5rem 1rem;
  border-left: 4px solid transparent;
  border-radius: 0 6px 6px 0;
  transition: all var(--citum-transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
}

.citum-entry:hover {
  background-color: #fcfcfc;
}

.citum-entry:target,
.citum-entry.is-highlighted {
  background-color: var(--citum-highlight-bg);
  border-left-color: var(--citum-highlight-border);
  transform: translateX(4px);
}

/* Sidebar Layout (Optional Enhancement) */
@media (min-width: 1200px) {
  .citum-with-sidebar {
    display: grid;
    grid-template-columns: 1fr var(--citum-sidebar-width);
    gap: var(--citum-sidebar-gap);
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
  }
  
  .citum-with-sidebar .citum-bibliography {
    margin-top: 0;
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    padding-right: 1.5rem;
    border-left: 1px solid #f0f0f0;
    border-top: none;
    padding-top: 0;
    padding-left: 2rem;
    scrollbar-width: thin;
    scrollbar-color: #ddd transparent;
  }
  
  .citum-with-sidebar .citum-bibliography::-webkit-scrollbar {
    width: 6px;
  }
  .citum-with-sidebar .citum-bibliography::-webkit-scrollbar-thumb {
    background-color: #ddd;
    border-radius: 10px;
  }
}

/* Tooltips */
.citum-tooltip {
  position: absolute;
  z-index: 1000;
  background: var(--citum-tooltip-bg);
  color: var(--citum-tooltip-color);
  padding: 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  max-width: 250px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--citum-transition-speed);
}

.citum-tooltip.is-visible {
  opacity: 1;
}

.citum-tooltip-author {
  font-weight: bold;
  display: block;
  margin-bottom: 0.25rem;
}

.citum-tooltip-title {
  font-style: italic;
  display: block;
}

/* High Contrast / Print */
@media (prefers-contrast: more) {
  :root {
    --citum-citation-color: #0000ff;
    --citum-highlight-bg: #ffff00;
  }
}

@media print {
  .citum-citation {
    color: inherit;
    border-bottom: none;
  }
}