/* Publication Cards - Dynamic v2 */

:root {
  --pub-card-bg: #ffffff;
  --pub-card-border: #e8e8e8;
  --pub-card-hover-border: #4a90d9;
  --pub-card-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --pub-card-hover-shadow: 0 6px 20px rgba(74,144,217,0.15);
  --pub-tag-bg: #f0f4f8;
  --pub-tag-text: #4a5568;
  --pub-highlight-bg: #fffbeb;
  --pub-highlight-border: #f59e0b;
  --pub-filter-active: #4a90d9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --pub-card-bg: #1e1e2e;
    --pub-card-border: #313244;
    --pub-card-hover-border: #89b4fa;
    --pub-card-shadow: 0 2px 8px rgba(0,0,0,0.3);
    --pub-card-hover-shadow: 0 6px 20px rgba(137,180,250,0.1);
    --pub-tag-bg: #313244;
    --pub-tag-text: #bac2de;
    --pub-highlight-bg: #1e1e2e;
    --pub-highlight-border: #f9e2af;
    --pub-filter-active: #89b4fa;
  }
}

.pub-section {
  margin-top: 2em;
}

.pub-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.5em;
  align-items: center;
}

.pub-filter-btn {
  padding: 6px 16px;
  border: 1px solid var(--pub-card-border);
  border-radius: 20px;
  background: var(--pub-card-bg);
  color: inherit;
  font-size: 0.85em;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.pub-filter-btn:hover {
  border-color: var(--pub-filter-active);
  color: var(--pub-filter-active);
}

.pub-filter-btn.active {
  background: var(--pub-filter-active);
  border-color: var(--pub-filter-active);
  color: #fff;
}

.pub-filter-btn .count {
  margin-left: 4px;
  opacity: 0.7;
  font-size: 0.85em;
}

.pub-search {
  flex: 1;
  min-width: 200px;
  padding: 6px 14px;
  border: 1px solid var(--pub-card-border);
  border-radius: 20px;
  background: var(--pub-card-bg);
  color: inherit;
  font-size: 0.85em;
  outline: none;
  transition: border-color 0.2s ease;
}

.pub-search:focus {
  border-color: var(--pub-filter-active);
}

.pub-search::placeholder {
  color: #aaa;
}

.pub-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 768px) {
  .pub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pub-card {
  position: relative;
  background: var(--pub-card-bg);
  border: 1px solid var(--pub-card-border);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  cursor: default;
  overflow: hidden;
}

.pub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--pub-card-border);
  transition: background 0.3s ease;
  border-radius: 12px 0 0 12px;
}

.pub-card:hover {
  border-color: var(--pub-card-hover-border);
  box-shadow: var(--pub-card-hover-shadow);
  transform: translateY(-2px);
}

.pub-card:hover::before {
  background: var(--pub-card-hover-border);
}

.pub-card.highlight {
  border-color: var(--pub-highlight-border);
}

.pub-card.highlight::before {
  background: var(--pub-highlight-border);
}

.pub-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}

.pub-venue {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8em;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--pub-filter-active);
  color: #fff;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.pub-venue.journal { background: #4a90d9; }
.pub-venue.conference { background: #e67e22; }
.pub-venue.chinese { background: #9b59b6; }
.pub-venue.dissertation { background: #1abc9c; }

.pub-year {
  font-size: 0.8em;
  color: #888;
  white-space: nowrap;
  font-weight: 600;
}

.pub-title {
  font-size: 0.95em;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--pub-card-hover-border);
}

.pub-title a {
  color: inherit;
  text-decoration: none;
}

.pub-title a:hover {
  text-decoration: underline;
}

.pub-authors {
  font-size: 0.82em;
  color: #666;
  line-height: 1.5;
  margin-bottom: 10px;
}

.pub-authors .corresponding {
  color: var(--pub-filter-active);
  font-weight: 600;
}

.pub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 10px;
}

.pub-tag {
  font-size: 0.72em;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--pub-tag-bg);
  color: var(--pub-tag-text);
  font-weight: 500;
  letter-spacing: 0.2px;
}

.pub-tag.best-paper {
  background: #fef3c7;
  color: #92400e;
  font-weight: 700;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.pub-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.78em;
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid var(--pub-card-border);
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

.pub-link:hover {
  border-color: var(--pub-filter-active);
  color: var(--pub-filter-active);
  text-decoration: none;
}

.pub-link .icon {
  font-size: 1.1em;
}

/* Animation for card appear */
.pub-card.entering {
  opacity: 0;
  transform: translateY(20px);
}

.pub-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Stagger animation */
.pub-card:nth-child(1) { transition-delay: 0ms; }
.pub-card:nth-child(2) { transition-delay: 50ms; }
.pub-card:nth-child(3) { transition-delay: 100ms; }
.pub-card:nth-child(4) { transition-delay: 150ms; }
.pub-card:nth-child(5) { transition-delay: 200ms; }
.pub-card:nth-child(6) { transition-delay: 250ms; }
.pub-card:nth-child(7) { transition-delay: 300ms; }
.pub-card:nth-child(8) { transition-delay: 350ms; }

/* No results */
.pub-no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3em 1em;
  color: #888;
  font-size: 1.1em;
}

/* Stats bar */
.pub-stats {
  display: flex;
  gap: 1.5em;
  margin-bottom: 1em;
  padding: 12px 16px;
  background: var(--pub-tag-bg);
  border-radius: 8px;
  font-size: 0.85em;
}

.pub-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pub-stat-value {
  font-weight: 700;
  font-size: 1.2em;
  color: var(--pub-filter-active);
}

.pub-stat-label {
  color: #888;
}