/*=================================================
  PUBLICATION PAGE
=================================================*/

.hero-section .hero-title {
  margin-bottom: 0.625rem;
}

.hero-section .hero-subtitle {
  max-width: 60ch;
  margin: 0 auto;
  color: var(--color-slate);
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--grid-gap);
}

.stat-card {
  background: var(--color-white);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--border-radius-md);
  padding: var(--card-padding);
  text-align: center;
  display: grid;
  gap: var(--space-xs);
  border-top-width: 2px;
  border-top-color: var(--color-sage);
}

.stat-number {
  font-family: var(--font-family-heading);
  font-size: clamp(2rem, 1.8rem + 0.8vw, 2.6rem);
  font-weight: var(--weight-regular);
  color: var(--color-sage);
  margin-bottom: 0;
}

.stat-label {
  font-family: var(--font-family-meta);
  font-size: var(--font-size-xs);
  letter-spacing: 0;
  color: var(--color-slate);
  margin-bottom: 0;
}

.section-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.section-card h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--weight-regular);
  margin-bottom: 0;
}

.section-content {
  display: grid;
  gap: var(--space-lg);
}

.research-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--grid-gap);
}

.area-card {
  background: var(--color-white);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--border-radius-md);
  padding: var(--card-padding);
  display: grid;
  gap: var(--space-sm);
}

.area-title {
  font-weight: var(--weight-regular);
  color: var(--color-sage);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0;
}

.area-description {
  margin: 0;
}

.publications-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  background: var(--color-porcelain);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--border-radius-md);
  padding: var(--card-padding);
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 240px;
}

.search-box input {
  padding-left: 2.5rem;
  border-radius: var(--border-radius-md);
  border: var(--border-width) solid var(--color-silver);
}

.search-box i {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-sage);
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-md);
  border: var(--border-width) solid var(--color-sage);
  background: transparent;
  color: var(--color-sage);
  font-size: 0.95rem;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--tint-sage-08);
  color: var(--color-sage);
}

.sort-select {
  min-width: 160px;
  border-radius: var(--border-radius-md);
  border: var(--border-width) solid var(--color-silver);
}

.publication-card {
  background: var(--color-white);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--border-radius-md);
  padding: var(--card-padding);
  display: grid;
  gap: var(--space-sm);
}

.publication-card:first-of-type {
  border-left-width: 2px;
  border-left-color: var(--color-sage);
}

.pub-title {
  font-weight: var(--weight-regular);
  color: var(--color-charcoal);
  text-decoration: none;
}

.pub-title:hover {
  color: var(--color-sage);
  text-decoration: underline;
}

.pub-authors {
  font-size: 0.95rem;
  color: var(--color-slate);
  margin-bottom: 0;
}

.pub-details {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: var(--font-size-xs);
  color: var(--color-slate);
}

.scholar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border-radius: var(--border-radius-md);
  border: var(--border-width) solid var(--color-blush);
  background: var(--color-blush);
  color: var(--color-sage-dark);
  font-weight: var(--weight-regular);
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.scholar-btn:hover,
.scholar-btn:focus-visible {
  background: var(--color-blush-soft);
  border-color: var(--color-blush-soft);
  color: var(--color-sage-dark);
  text-decoration: none;
}

.pub-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-family-meta);
  letter-spacing: 0;
  color: var(--color-slate);
}

.pub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: var(--space-sm);
}

.pub-actions .btn {
  padding: 0.45rem 1.1rem;
}

.pub-ranking {
  font-family: var(--font-family-meta);
  font-size: var(--font-size-xs);
  letter-spacing: 0;
  color: var(--color-sage);
}

/* Presentations & Talks Timeline */
.presentation-timeline {
  display: grid;
  gap: var(--space-md);
}

.presentation-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-white);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--border-radius-md);
  border-left: 3px solid var(--color-sage);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.presentation-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.presentation-year {
  font-family: var(--font-family-heading);
  font-size: 1.1rem;
  font-weight: var(--weight-medium);
  color: var(--color-sage);
  padding-top: 0.15rem;
}

.presentation-details {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.presentation-title {
  font-weight: var(--weight-regular);
  color: var(--color-charcoal);
  line-height: 1.5;
}

.presentation-venue {
  font-size: var(--font-size-sm);
  color: var(--color-slate);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.presentation-venue::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--color-sage);
  border-radius: 50%;
}

/* Pub metrics badges */
.pub-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space-xs);
}

.metric-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  background: var(--tint-sage-08);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  color: var(--color-sage-dark);
}

.metric-badge i {
  font-size: 0.75rem;
  color: var(--color-sage);
}

@media (max-width: 768px) {
  .publications-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .pub-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .presentation-item {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .presentation-year {
    font-size: 0.9rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--color-silver);
  }
}