/* ==========================================================================
   Publications Tab Layouts
   ========================================================================== */
.publications-nav {
  display: flex;
  justify-content: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
  gap: 20px;
}

.pub-tab-btn {
  padding: 12px 24px;
  font-family: var(--font-headings);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  position: relative;
  transition: var(--transition-smooth);
}

.pub-tab-btn:hover {
  color: var(--color-text-white);
}

.pub-tab-btn.active {
  color: var(--color-blue-glow);
}

.pub-tab-btn::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-blue-accent);
  transition: var(--transition-smooth);
}

.pub-tab-btn.active::after {
  width: 100%;
}

/* Year Headers */
.year-header {
  font-family: var(--font-headings);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-orange-accent);
  margin: 40px 0 20px 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.year-header::after {
  content: '';
  flex-grow: 1;
  height: 1px;
  background: var(--color-border);
}

/* ==========================================================================
   Citation Cards
   ========================================================================== */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.publication-card {
  display: flex;
  gap: 24px;
}

.pub-index {
  font-family: var(--font-headings);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-muted);
  flex-shrink: 0;
  width: 32px;
  text-align: right;
  margin-top: 2px;
}

.pub-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pub-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-white);
  line-height: 1.4;
}

.pub-title a:hover {
  color: var(--color-blue-glow);
}

.pub-authors {
  font-size: 0.95rem;
  color: var(--color-text-white);
}

.pub-authors .advisor-highlight {
  font-weight: 600;
  color: var(--color-orange-glow);
}

.pub-venue {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.pub-venue span {
  font-weight: 600;
}

.pub-links {
  display: flex;
  gap: 16px;
  margin-top: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.pub-link-item {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-blue-glow);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.pub-link-item:hover {
  color: var(--color-text-white);
}

/* BibTeX Collapsible Code Box */
.bibtex-box {
  display: none;
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 16px;
  margin-top: 12px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: pre-wrap;
  word-break: break-all;
  position: relative;
  overflow-x: auto;
}

.bibtex-box.show {
  display: block;
}

.copy-bibtex-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--color-border);
  color: var(--color-text-white);
  padding: 4px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 4px;
  transition: var(--transition-fast);
}

.copy-bibtex-btn:hover {
  background: var(--color-blue-accent);
}

/* ==========================================================================
   Responsive Publications Page Breakpoints
   ========================================================================== */
@media (max-width: 768px) {
  .pub-tab-btn {
    padding: 10px 16px;
    font-size: 0.95rem;
  }
}

@media (max-width: 640px) {
  .publications-nav {
    flex-wrap: wrap;
    gap: 8px;
  }

  .pub-tab-btn {
    flex-grow: 1;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
  }

  .pub-tab-btn.active::after {
    display: none;
  }

  .publication-card {
    gap: 12px;
  }

  .pub-index {
    display: none;
  }
}