/**
 * Publications Page Styling
 * Modern, minimalist redesign for publications list
 * Created: 2025-12-05
 */

/* ====================
   TAB NAVIGATION - REFINED
   ==================== */

.pub-nav-tabs {
  display: flex;
  gap: 0;
  justify-content: center;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 20px;
}

.pub-nav-tab {
  padding: 12px 24px;
  color: var(--text-secondary) !important;
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  border-bottom: 3px solid transparent;
  transition: all 0.2s ease;
  position: relative;
  top: 1px;
}

.pub-nav-tab:hover {
  color: var(--text-primary) !important;
  border-bottom-color: var(--border-accent);
}

.pub-nav-tab.active {
  color: var(--text-primary) !important;
  font-weight: 500;
  border-bottom-color: var(--hematite);
}

/* ====================
   CONTENT WRAPPER - CENTERED MAX-WIDTH
   ==================== */

.pub-content-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

@media only screen and (min-width: 960px) {
  .pub-content-wrapper {
    padding: 0;
  }
}

/* ====================
   YEAR NAVIGATION DROPDOWN
   ==================== */

.pub-year-nav {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 0;
  margin-top: 12px;
  margin-bottom: 12px;
}

.pub-year-label {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1.5;
}

.pub-year-select {
  flex: 1 1 auto;
  max-width: 100%;
  padding: 6px 32px 6px 12px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-accent);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
  line-height: 1.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237A706A' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.pub-year-select:hover {
  border-color: var(--hematite);
  background-color: var(--bg-secondary);
}

.pub-year-select:focus {
  outline: none;
  border-color: var(--hematite);
  box-shadow: 0 0 0 3px rgba(122, 112, 106, 0.1);
}

/* ====================
   FORTHCOMING CARD - SPECIAL HIGHLIGHT
   ==================== */

.card-forthcoming {
  border-left: 4px solid var(--golden-mist) !important;
  box-shadow: var(--shadow-md) !important;
}

.card-forthcoming .card-header {
  background-color: var(--bg-subtle) !important;
  font-weight: 600;
}

/* ====================
   FLOATING BACK TO TOP BUTTON
   ==================== */

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--hematite);
  color: var(--cloud-dancer) !important;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--golden-mist);
  color: var(--text-primary) !important;
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(90, 85, 80, 0.15);
}

/* Show button when scrolled down */
.back-to-top:not(.show) {
  pointer-events: none;
}

/* ====================
   UPDATE INFO - SUBTLE FOOTER
   ==================== */

.pub-update-info {
  text-align: center;
  padding: 20px 0;
  color: var(--text-light);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 30px;
}

.pub-update-info small {
  color: var(--text-light);
}

/* ====================
   RESPONSIVE ADJUSTMENTS
   ==================== */

@media only screen and (max-width: 640px) {
  .pub-nav-tab {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .pub-year-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .pub-year-select {
    width: 100%;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
  }
}