/* Blog Styles - NDERF Research */
/* Using site's purple (#8765D6) and teal (#16DAF0) color scheme */

/* ============================================
   Blog List Page
   ============================================ */

.blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.blog-header {
  text-align: center;
  margin-bottom: 40px;
  padding-top: 20px;
}

.blog-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-gray-100);
  margin-bottom: 10px;
}

.blog-subtitle {
  font-size: 1.1rem;
  color: var(--color-gray-100);
  max-width: 600px;
  margin: 0 auto;
}

.blog-subtitle .title-highlight {
  color: var(--color-teal-500);
  text-shadow: 0 0 16px var(--color-teal-400);
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
  padding-bottom: 40px;
}

/* Blog Card */
.blog-card {
  background: var(--color-surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  outline: none;
  will-change: transform;
}



.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  border-color: var(--color-teal-500);
}



.blog-card-image {
  height: 180px;
  background: linear-gradient(135deg, var(--color-purple-600) 0%, var(--color-teal-600) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-placeholder {
  color: rgba(255, 255, 255, 0.8);
}

.blog-card-placeholder i {
  font-size: 4rem;
}

.blog-card-content {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.blog-card-date {
  
  font-weight: 500;
}

.blog-card-count {
  color: var(--color-purple-600);
}

.blog-card-count i {
  margin-right: 4px;
}

.blog-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-purple-600);
  margin: 8px 0;
  line-height: 1.4;
}

.blog-card-description {
  color: var(--color-gray-600);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.blog-tag {
  background: rgba(76, 175, 80, 0.15);
  color: #256D29;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(76, 175, 80, 0.5);
}

.blog-card-link {
  color: var(--color-purple-700);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.blog-card-link i {
  transition: transform 0.2s;
}

.blog-card:hover .blog-card-link i {
  transform: translateX(4px);
}

/* Empty State */
.blog-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
}

.blog-empty i {
  font-size: 4rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

/* ============================================
   Blog Post Page
   ============================================ */

.blog-post-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-gray-400);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: 20px;
  transition: color 0.2s;
}

.blog-back-link:hover {
  color: var(--color-teal-400);
  text-decoration: underline;
}

.blog-post-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 40px;
}

/* Sidebar */
.blog-sidebar {
  position: relative;
}

.blog-sidebar-sticky {
  position: sticky;
  top: 100px;
  background: var(--color-gray-100);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--color-border);
}

.blog-sidebar-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #6c757d;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #007bff;
}

.blog-toc {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.blog-toc-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 6px 0;
  transition: color 0.2s, padding-left 0.2s;
  border-left: 2px solid transparent;
  padding-left: 12px;
}

.blog-toc-link:hover {
  color: var(--color-teal-600);
  padding-left: 16px;
  border-left-color: var(--color-teal-500);
}

.blog-citations-preview {
  margin-bottom: 24px;
  padding: 16px;
  background: var(--color-gray-50);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.blog-citations-preview h4 {
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.blog-citations-count {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.blog-citations-count i {
  color: var(--color-purple-400);
  margin-right: 6px;
}

.blog-view-data-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-teal-600);
  color: var(--color-gray-100);
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s;
}

.blog-view-data-btn:hover {
  background: var(--color-teal-500);
  color: var(--color-gray-100);
}

.blog-sidebar-share {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

.blog-sidebar-share h4 {
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

.blog-share-buttons {
  display: flex;
  gap: 8px;
}

.btn-share {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, opacity 0.2s;
  color: #fff;
}

.btn-share:hover {
  transform: scale(1.1);
  opacity: 0.9;
}

.btn-twitter {
  background: #1da1f2;
}

.btn-facebook {
  background: #4267b2;
}

.btn-copy {
  background: var(--color-purple-600);
}

/* Main Content */
.blog-main {
  min-width: 0;
}

.blog-article {
  background: var(--color-surface);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--color-border);
}

.blog-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.blog-article-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-gray-900);
  line-height: 1.3;
  margin-bottom: 16px;
}

.blog-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.blog-article-meta i {
  margin-right: 6px;
  color: var(--color-teal-400);
}

.blog-article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Article Content */
.blog-article-content {
  line-height: 1.8;
}

.blog-section {
  margin-bottom: 48px;
}

.blog-section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #212529;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid #007bff;
}

.blog-content {
  font-size: 1.05rem;
  color: var(--color-text);
}

.blog-content p {
  margin-bottom: 16px;
}

.blog-content a {
  color: var(--color-teal-400);
  text-decoration: underline;
}

.blog-content a:hover {
  color: var(--color-teal-300);
}

.blog-content ul {
  margin-bottom: 16px;
  padding-left: 24px;
}

.blog-content li {
  margin-bottom: 8px;
}

/* Charts */
.blog-chart-container {
  margin: 24px 0;
  padding: 20px;
  background: var(--color-gray-50);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.blog-chart {
  max-height: 400px;
}

.blog-chart-caption {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 12px;
  font-style: italic;
}

/* Quote Carousel */
.blog-quotes-carousel {
  margin: 24px 0;
  padding: 24px;
  background: var(--color-gray-50);
  border-radius: 12px;
  border-left: 4px solid var(--color-teal-500);
}

.blog-quote-container {
  position: relative;
  min-height: 100px;
}

.blog-quote {
  display: none;
  animation: fadeIn 0.5s ease;
}

.blog-quote.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.blog-quote-text {
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.7;
  margin: 0 0 12px 0;
}

.blog-quote-text::before {
  content: '"';
  font-size: 1.5rem;
  color: var(--color-teal-400);
}

.blog-quote-text::after {
  content: '"';
  font-size: 1.5rem;
  color: var(--color-teal-400);
}

.blog-quote-cite {
  display: block;
  text-align: right;
  color: var(--color-teal-400);
  font-style: normal;
  font-weight: 500;
}

.blog-quote-cite a {
  color: inherit;
  text-decoration: none;
}

.blog-quote-cite a:hover {
  text-decoration: underline;
}

.blog-quote-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.blog-quote-prev,
.blog-quote-next {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-teal-500);
  background: transparent;
  color: var(--color-teal-600);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.blog-quote-prev:hover,
.blog-quote-next:hover {
  background: var(--color-teal-600);
  color: var(--color-gray-100);
}

.blog-quote-counter {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Citations Section */
.blog-citations-section {
  margin: 24px 0;
  padding: 24px;
  background: var(--color-gray-50);
  border-radius: 12px;
}

.blog-theme-citations {
  margin-bottom: 20px;
}

.blog-theme-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-purple-600);
  margin-bottom: 12px;
}

.blog-theme-count {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.blog-citation-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blog-citation-pill {
  display: inline-block;
  padding: 4px 12px;
  background: #e7f3ff;
  border: 1px solid #b3d7ff;
  border-radius: 50px;
  color: #0066cc;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
}

.blog-citation-pill:hover {
  background: #0066cc;
  color: var(--color-gray-100);
}

.blog-citation-more {
  display: inline-block;
  padding: 4px 12px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.blog-view-all-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--color-teal-600);
  font-weight: 500;
  text-decoration: none;
}

.blog-view-all-btn:hover {
  text-decoration: underline;
}

/* Related Posts */
.blog-related {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.blog-related h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-purple-600);
  margin-bottom: 20px;
}

.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.blog-related-card {
  padding: 20px;
  background: var(--color-gray-50);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  border: 1px solid var(--color-border);
}

.blog-related-card:hover {
  border-color: var(--color-teal-500);
  transform: translateY(-2px);
}

.blog-related-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-purple-600);
  margin-bottom: 8px;
  line-height: 1.4;
}

.blog-related-date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 992px) {
  .blog-post-layout {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    order: 2;
  }

  .blog-sidebar-sticky {
    position: relative;
    top: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .blog-toc {
    margin-bottom: 0;
  }

  .blog-sidebar-share {
    border-top: none;
    padding-top: 0;
  }
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-title {
    font-size: 2rem;
  }

  .blog-article {
    padding: 24px;
  }

  .blog-article-title {
    font-size: 1.75rem;
  }

  .blog-article-meta {
    flex-direction: column;
    gap: 8px;
  }

  .blog-sidebar-sticky {
    grid-template-columns: 1fr;
  }

  .blog-section-title {
    font-size: 1.25rem;
  }

  .blog-chart-container {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .blog-container {
    padding: 12px;
  }

  .blog-card-content {
    padding: 16px;
  }

  .blog-card-title {
    font-size: 1.1rem;
  }

  .blog-quotes-carousel {
    padding: 16px;
  }

  .blog-quote-text {
    font-size: 1rem;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .blog-sidebar,
  .blog-share-buttons,
  .blog-quote-nav,
  .blog-related {
    display: none;
  }

  .blog-post-layout {
    display: block;
  }

  .blog-article {
    box-shadow: none;
    padding: 0;
  }

  .blog-chart-container {
    page-break-inside: avoid;
  }
}