/* Articles Page Styles */

/* Page Header */
.page-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
  color: white;
  padding: 48px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.125rem;
  opacity: 0.9;
}

/* Articles Section */
.articles-section {
  padding: 48px 0 80px;
  background: #f9fafb;
}

/* Tab Navigation */
.articles-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-weight: 500;
  color: #6b7280;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  border-color: #1e3a8a;
  color: #1e3a8a;
}

.tab-btn.active {
  background: #1e3a8a;
  border-color: #1e3a8a;
  color: white;
}

.tab-btn i {
  font-size: 14px;
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

/* Article Card */
.article-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.3s;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 20px rgba(0,0,0,0.1);
}

.article-image-link {
  display: block;
  text-decoration: none;
}

.article-image {
  height: 180px;
  background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.article-card:hover .article-image img {
  transform: scale(1.05);
}

.article-image i {
  font-size: 48px;
  color: #1e3a8a;
  opacity: 0.5;
}

.article-content {
  padding: 20px;
}

.article-type {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.article-type.type-news {
  background: #dbeafe;
  color: #1e40af;
}

.article-type.type-knowledge {
  background: #d1fae5;
  color: #065f46;
}

.article-type.type-blog {
  background: #fef3c7;
  color: #92400e;
}

.article-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-title a {
  color: #1f2937;
  transition: color 0.2s;
}

.article-title a:hover {
  color: #1e3a8a;
}

.article-excerpt {
  color: #6b7280;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  gap: 16px;
  color: #9ca3af;
  font-size: 13px;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta i {
  font-size: 12px;
}

/* Loading & Empty States */
.loading-spinner {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px;
  color: #6b7280;
}

.loading-spinner i {
  font-size: 32px;
  margin-bottom: 12px;
  color: #1e3a8a;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px;
  background: white;
  border-radius: 12px;
}

.empty-state i {
  font-size: 48px;
  color: #d1d5db;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.25rem;
  color: #1f2937;
  margin-bottom: 8px;
}

.empty-state p {
  color: #6b7280;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-top: 48px;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-weight: 500;
  color: #6b7280;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
  background: #1e3a8a;
  border-color: #1e3a8a;
  color: white;
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.page-info {
  color: #6b7280;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .articles-tabs {
    gap: 8px;
  }

  .tab-btn {
    padding: 10px 16px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }

  .pagination {
    flex-wrap: wrap;
  }
}