/* ========================================
   PUBLICATIONS PAGE STYLES
   Modern professional design for publications/books
   ======================================== */

/* Page Container */
.publications-page {
  background: var(--bg-light);
  min-height: 80vh;
  padding: var(--spacing-xl) 0;
}

/* Page Header */
.publications-header {
  text-align: center;
  margin-bottom: var(--spacing-xxxl);
  background: linear-gradient(135deg, #f8fffe 0%, var(--white) 100%);
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border-light);
}

.publications-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  color: var(--jinan-teal);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.publications-title i {
  color: var(--jinan-gold);
  font-size: 0.8em;
}

.publications-subtitle {
  color: var(--text-muted);
  font-size: var(--font-size-h6);
  max-width: 600px;
  margin: 0 auto;
}

/* Categories Grid */
.categories-section {
  margin-bottom: var(--spacing-xxxl);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.category-card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  border: 1px solid var(--border-light);
  transition: var(--transition-standard);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--jinan-teal), var(--jinan-gold));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-lg);
  border-color: var(--jinan-teal);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card.active {
  border-color: var(--jinan-teal);
  background: linear-gradient(135deg, #f8fffe 0%, var(--white) 100%);
}

.category-card.active::before {
  transform: scaleX(1);
}

.category-image {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto var(--spacing-md);
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-light);
  transition: var(--transition-standard);
}

.category-card:hover .category-image {
  border-color: var(--jinan-gold);
  background: linear-gradient(
    135deg,
    var(--jinan-teal),
    var(--dark-teal-hover)
  );
}

.category-image img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 50%;
}

.category-image i {
  font-size: 2rem;
  color: var(--jinan-teal);
  transition: color 0.3s ease;
}

.category-card:hover .category-image i {
  color: var(--white);
}

.category-name {
  font-size: var(--font-size-h6);
  font-weight: var(--font-weight-semibold);
  color: var(--text-dark);
  margin: 0;
  transition: color 0.3s ease;
}

.category-card:hover .category-name {
  color: var(--jinan-teal);
}

/* Publications Section */
.publications-section {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border: 1px solid var(--border-light);
}

.publications-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--bg-light);
}

.publications-section-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  color: var(--jinan-teal);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.publications-section-title i {
  color: var(--jinan-gold);
}

.publications-count {
  background: var(--bg-light);
  color: var(--text-muted);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 20px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
}

/* Publications Grid */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

/* Publication Cards - Fixed Overflow Layout */
.publication-card {
  background: var(--white);
  border-radius: var(--card-border-radius);
  box-shadow: var(--box-shadow-sm);
  transition: var(--transition-standard);
  overflow: hidden;
  border: 1px solid #e5e7eb;
  display: flex;
  align-items: stretch;
  height: var(--card-max-height);
  position: relative;
}

.publication-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
  border-color: var(--primary-color);
}

/* Cover Image Section */
.publication-cover {
  width: var(--publication-cover-width);
  min-width: var(--publication-cover-width);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.publication-card:hover .publication-cover {
  width: 180px;
  min-width: 180px;
  transform: scale(1.05);
}

.publication-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.3s ease;
}

.publication-card:hover .publication-cover-img {
  transform: scale(1.1);
}

.publication-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--primary-color);
  font-size: 1.8rem;
  opacity: 0.6;
  transition: all 0.3s ease;
}

.publication-card:hover .publication-cover-placeholder {
  transform: scale(1.1);
  opacity: 0.8;
}

/* Content Section - Strict Overflow Control */
.publication-content {
  flex: 1;
  padding: var(--publication-content-padding);
  display: flex;
  flex-direction: column;
  height: var(--card-max-height);
  overflow: hidden;
  min-width: 0; /* Critical for text truncation */
  transition: all 0.3s ease;
}

.publication-card:hover .publication-content {
  padding-left: calc(var(--publication-content-padding) + 10px);
}

.publication-category {
  display: inline-block;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-hover)
  );
  color: var(--white);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 6px;
  width: fit-content;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.publication-title {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-bold);
  color: #1f2937;
  margin: 0 0 4px 0;
  line-height: var(--line-height-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 2.4em;
  flex-shrink: 0;
}

.publication-author {
  color: #6b7280;
  font-size: var(--font-size-xs);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.publication-author i {
  color: var(--primary-color);
  font-size: var(--font-size-xxs);
  flex-shrink: 0;
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
  flex-grow: 1;
  align-content: flex-start;
  max-height: 45px;
  overflow: hidden;
}

.publication-meta span {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: var(--font-size-xxs);
  color: #6b7280;
  background: #f8fafc;
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid #e5e7eb;
  white-space: nowrap;
  flex-shrink: 0;
}

.publication-meta i {
  color: var(--primary-color);
  font-size: 0.6rem;
  flex-shrink: 0;
}

/* Fixed Button Styling with Theme Variables */
.publication-actions {
  display: flex;
  gap: 4px;
  margin-top: auto;
  flex-shrink: 0;
  flex-direction: column;
}

.publication-btn {
  padding: 5px 10px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: var(--transition-standard);
  display: inline-flex;
  align-items: center;
  gap: 3px;
  border: none;
  cursor: pointer;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  flex: 1;
  justify-content: center;
}

.publication-btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-hover)
  );
  color: var(--white) !important;
  border: 1px solid var(--primary-color);
}

.publication-btn-primary:hover {
  background: linear-gradient(
    135deg,
    var(--primary-hover),
    var(--dark-teal-hover)
  );
  transform: translateY(-1px);
  box-shadow: var(--button-shadow-hover);
  color: var(--white) !important;
}

.publication-btn-secondary {
  background: var(--white) !important;
  color: var(--primary-color) !important;
  border: 1px solid var(--primary-color);
}

.publication-btn-secondary:hover {
  background: var(--primary-color) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* Book Cards - Same Improved Layout with Theme Variables */
.book-card {
  background: var(--white);
  border-radius: var(--card-border-radius);
  box-shadow: var(--box-shadow-sm);
  transition: var(--transition-standard);
  overflow: hidden;
  border: 1px solid #e5e7eb;
  display: flex;
  align-items: stretch;
  height: var(--card-max-height);
  position: relative;
}

.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
  border-color: var(--primary-color);
}

.book-cover {
  width: var(--publication-cover-width);
  min-width: var(--publication-cover-width);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.book-card:hover .book-cover {
  width: 180px;
  min-width: 180px;
  transform: scale(1.05);
}

.book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.3s ease;
}

.book-card:hover .book-cover-img {
  transform: scale(1.1);
}

.book-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--primary-color);
  font-size: 1.8rem;
  opacity: 0.6;
  transition: all 0.3s ease;
}

.book-card:hover .book-cover-placeholder {
  transform: scale(1.1);
  opacity: 0.8;
}

.book-content {
  flex: 1;
  padding: var(--publication-content-padding);
  display: flex;
  flex-direction: column;
  height: var(--card-max-height);
  overflow: hidden;
  min-width: 0;
  transition: all 0.3s ease;
}

.book-card:hover .book-content {
  padding-left: calc(var(--publication-content-padding) + 10px);
}

.book-category {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  color: var(--white);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 6px;
  width: fit-content;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.book-title {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-bold);
  color: #1f2937;
  margin: 0 0 4px 0;
  line-height: var(--line-height-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 2.4em;
  flex-shrink: 0;
}

.book-author {
  color: #6b7280;
  font-size: var(--font-size-xs);
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.book-author i {
  color: var(--primary-color);
  font-size: var(--font-size-xxs);
  flex-shrink: 0;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
  flex-grow: 1;
  align-content: flex-start;
  max-height: 45px;
  overflow: hidden;
}

.book-meta span {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: var(--font-size-xxs);
  color: #6b7280;
  background: #f8fafc;
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid #e5e7eb;
  white-space: nowrap;
  flex-shrink: 0;
}

.book-meta i {
  color: var(--primary-color);
  font-size: 0.6rem;
  flex-shrink: 0;
}

.book-actions {
  display: flex;
  gap: 4px;
  margin-top: auto;
  flex-shrink: 0;
}

.book-btn {
  padding: 5px 10px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  transition: var(--transition-standard);
  display: inline-flex;
  align-items: center;
  gap: 3px;
  border: none;
  cursor: pointer;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  flex: 1;
  justify-content: center;
}

.book-btn-primary {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  color: var(--white) !important;
  border: 1px solid var(--accent-color);
}

.book-btn-primary:hover {
  background: linear-gradient(
    135deg,
    var(--accent-hover),
    var(--gold-accent-hover)
  );
  transform: translateY(-1px);
  box-shadow: var(--button-shadow-hover);
  color: var(--white) !important;
}

.book-btn-secondary {
  background: var(--white) !important;
  color: var(--accent-color) !important;
  border: 1px solid var(--accent-color);
}

.book-btn-secondary:hover {
  background: var(--accent-color) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* Responsive grid adjustments */
@media (min-width: 1200px) {
  .publications-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .publications-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 991px) {
  .publications-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 1rem auto 0;
  }
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
  .publications-page {
    padding: 1rem 0;
  }

  .publications-header {
    padding: 1.5rem 0;
    margin-bottom: 2rem;
  }

  .publications-title {
    font-size: 2rem;
    flex-direction: column;
    gap: 0.5rem;
  }

  .categories-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
  }

  .category-card {
    padding: 1rem;
  }

  .category-image {
    width: 60px;
    height: 60px;
  }

  .category-image img {
    width: 40px;
    height: 40px;
  }

  .category-image i {
    font-size: 1.5rem;
  }

  .publications-section {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .publications-section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .publications-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 0 1rem;
  }

  .publication-card,
  .book-card {
    flex-direction: column;
    min-height: auto;
    max-height: none;
  }

  .publication-cover,
  .book-cover {
    width: 100%;
    min-width: 100%;
    height: 180px;
    min-height: 180px;
  }

  .publication-content,
  .book-content {
    padding: 16px;
    min-height: auto;
    max-height: none;
  }

  .publication-title,
  .book-title {
    font-size: 1rem;
    -webkit-line-clamp: 3;
    height: auto;
  }

  .publication-meta,
  .book-meta {
    gap: 8px;
    margin-bottom: 12px;
    max-height: none;
  }

  .publication-meta span,
  .book-meta span {
    font-size: 0.75rem;
    padding: 3px 6px;
  }

  .publication-actions,
  .book-actions {
    gap: 6px;
  }

  .publication-btn,
  .book-btn {
    padding: 10px 16px;
    font-size: 0.8rem;
    justify-content: center;
  }
}

@media (max-width: 576px) {
  .publications-title {
    font-size: 1.75rem;
  }

  .categories-grid {
    grid-template-columns: 1fr;
  }

  .publications-section {
    padding: 1rem;
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  color: var(--jinan-gold);
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.empty-state p {
  font-size: 1rem;
  margin: 0;
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: 2rem;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-light);
  border-top: 4px solid var(--jinan-teal);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Pagination */
.pagination-section {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
}

.pagination {
  display: inline-flex;
  gap: 0.5rem;
}

.pagination a {
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--jinan-teal);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background: var(--jinan-teal);
  color: var(--white);
  border-color: var(--jinan-teal);
}

.pagination a.active {
  background: var(--jinan-teal);
  color: var(--white);
  border-color: var(--jinan-teal);
}

/* RTL Support */
html[data-lang="ar"] .publications-title,
html[data-lang="ar"] .publications-section-title {
  direction: rtl;
  text-align: right;
}

html[data-lang="ar"] .publications-section-header {
  flex-direction: row-reverse;
}

html[data-lang="ar"] .publication-meta {
  direction: rtl;
}

html[data-lang="ar"] .publication-actions {
  direction: rtl;
}

/* RTL Support for Cover Layout */
[dir="rtl"] .publication-card,
[dir="rtl"] .book-card {
  flex-direction: row-reverse;
}

[dir="rtl"] .publication-content,
[dir="rtl"] .book-content {
  text-align: right;
}

[dir="rtl"] .publication-author,
[dir="rtl"] .book-author {
  flex-direction: row-reverse;
}

[dir="rtl"] .publication-meta span,
[dir="rtl"] .book-meta span {
  flex-direction: row-reverse;
}

/* RTL Hover Effects */
[dir="rtl"] .publication-card:hover .publication-content,
[dir="rtl"] .book-card:hover .book-content {
  padding-right: calc(var(--publication-content-padding) + 10px);
  padding-left: var(--publication-content-padding);
}

[dir="rtl"] .publications-grid .book-card:hover .book-content {
  padding-right: 26px;
  padding-left: 16px;
}

@media (max-width: 768px) {
  [dir="rtl"] .publication-card,
  [dir="rtl"] .book-card {
    flex-direction: column;
  }
}

/* Support for AJAX-loaded book-card content in publications grid */
.publications-grid .book-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  display: flex;
  align-items: stretch;
  min-height: 220px;
  max-height: 280px;
  position: relative;
}

.publications-grid .book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(49, 102, 103, 0.15);
  border-color: var(--primary-color);
}

/* Cover image support for AJAX book cards */
.publications-grid .book-card .book-cover {
  width: 120px;
  min-width: 120px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.publications-grid .book-card:hover .book-cover {
  width: 180px;
  min-width: 180px;
  transform: scale(1.05);
}

.publications-grid .book-card .book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.3s ease;
}

.publications-grid .book-card:hover .book-cover-img {
  transform: scale(1.1);
}

.publications-grid .book-card .book-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--primary-color);
  font-size: 2rem;
  opacity: 0.6;
  transition: all 0.3s ease;
}

.publications-grid .book-card:hover .book-cover-placeholder {
  transform: scale(1.1);
  opacity: 0.8;
}

.publications-grid .book-card .book-content {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
  max-height: 280px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.publications-grid .book-card:hover .book-content {
  padding-left: 26px;
}

.publication-abstract h4 {
  color: var(--jinan-teal, #316667);
  margin-bottom: 0.75rem;
}

/* Enhanced styles for HTML content in abstracts */
.publication-abstract p {
  margin: 0.75rem 0;
  line-height: 1.6;
}

.publication-abstract p:first-child {
  margin-top: 0;
}

.publication-abstract p:last-child {
  margin-bottom: 0;
}

.publication-abstract img {
  max-width: 100%;
  height: auto;
  margin: 15px 0;
  border-radius: 5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: block;
}

.publication-abstract strong {
  color: var(--jinan-teal, #316667);
  font-weight: 600;
}

.publication-abstract br {
  line-height: 2;
}

/* RTL support for abstract content */
.publication-abstract [dir="rtl"] {
  text-align: right;
  direction: rtl;
}

.publication-abstract p[dir="rtl"] {
  text-align: right;
  margin: 15px 0;
  line-height: 1.6;
}