/* ===========================
   Article Page Styles
   =========================== */

body {
  font-family: 'Noto Sans TC', sans-serif;
}

/* Article Hero Section */
.article-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 120px 0 60px;
  color: white;
}

.article-hero .container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.article-hero .category {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.article-hero h1 {
  font-size: 2.2rem;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.back-link {
  color: white;
  text-decoration: none;
  opacity: 0.9;
  display: inline-block;
  margin-bottom: 1.5rem;
}

.back-link:hover {
  opacity: 1;
}

/* Article Content */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
  line-height: 1.8;
  color: #333;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
  color: #1a1a2e;
  border-bottom: 2px solid #667eea;
  padding-bottom: 0.5rem;
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  color: #333;
}

.article-content p {
  margin-bottom: 1.25rem;
}

.article-content ul,
.article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content blockquote {
  background: #f8f9fa;
  border-left: 4px solid #667eea;
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
}

.article-content a {
  color: #667eea;
}

/* Table Responsive */
.article-content .table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  -webkit-overflow-scrolling: touch;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.article-content th,
.article-content td {
  border: 1px solid #ddd;
  padding: 12px;
  text-align: left;
}

.article-content th {
  background: #f8f9fa;
  font-weight: 600;
}

/* Article CTA */
.article-cta {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  margin: 3rem 0;
}

.article-cta h3 {
  margin-bottom: 1rem;
}

.article-cta .btn {
  display: inline-block;
  background: #667eea;
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.article-cta .btn:hover {
  background: #5a67d8;
  transform: translateY(-2px);
}

/* Related Articles */
.related-articles {
  background: #f8f9fa;
  padding: 3rem 2rem;
}

.related-articles h3 {
  text-align: center;
  margin-bottom: 2rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.related-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.related-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.related-card h4 {
  color: #1a1a2e;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.related-card p {
  color: #666;
  font-size: 0.9rem;
}

/* Knowledge Base Index Page */
.knowledge-hero {
  background: linear-gradient(135deg, #2856d6 0%, #755cd0 100%);
  padding: 120px 0 60px;
  color: white;
  text-align: center;
}

.knowledge-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.knowledge-hero p {
  font-size: 1.2rem;
  opacity: 0.9;
}

.articles-section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.category-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #667eea;
  color: #1a1a2e;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.article-card {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  display: block;
}

.article-card:hover {
  border-color: #667eea;
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.15);
  transform: translateY(-4px);
}

.article-card .category-tag {
  display: inline-block;
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.article-card h3 {
  font-size: 1.1rem;
  color: #1a1a2e;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-card p {
  color: #666;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ===========================
   Responsive Styles
   =========================== */

/* Tablet - 768px and below */
@media (max-width: 768px) {
  .article-hero {
    padding: 100px 0 40px;
  }

  .article-hero .container {
    padding: 0 1.5rem;
  }

  .article-hero h1 {
    font-size: 1.75rem;
    line-height: 1.3;
  }

  .article-hero .category {
    font-size: 0.85rem;
    padding: 3px 10px;
  }

  .article-content {
    padding: 2rem 1.5rem;
  }

  .article-content h2 {
    font-size: 1.3rem;
    margin: 2rem 0 0.75rem;
  }

  .article-content h3 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.5rem;
  }

  .article-content p {
    font-size: 0.95rem;
  }

  .article-content ul,
  .article-content ol {
    margin-left: 1.25rem;
  }

  .article-content blockquote {
    padding: 0.75rem 1rem;
    margin: 1rem 0;
  }

  .article-cta {
    padding: 1.5rem;
    margin: 2rem 0;
  }

  .article-cta h3 {
    font-size: 1.1rem;
  }

  .article-cta .btn {
    padding: 10px 20px;
    font-size: 0.95rem;
  }

  .related-articles {
    padding: 2rem 1.5rem;
  }

  .related-articles h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .related-card {
    padding: 1.25rem;
  }

  .related-card h4 {
    font-size: 0.95rem;
  }

  .related-card p {
    font-size: 0.85rem;
  }

  /* Knowledge Base Index */
  .knowledge-hero {
    padding: 100px 0 40px;
  }

  .knowledge-hero h1 {
    font-size: 1.75rem;
  }

  .knowledge-hero p {
    font-size: 1rem;
  }

  .articles-section {
    padding: 2.5rem 1.5rem;
  }

  .category-title {
    font-size: 1.25rem;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .article-card {
    padding: 1.25rem;
  }

  .article-card h3 {
    font-size: 1rem;
  }
}

/* Mobile - 480px and below */
@media (max-width: 480px) {
  .article-hero {
    padding: 85px 0 30px;
  }

  .article-hero .container {
    padding: 0 1rem;
  }

  .article-hero h1 {
    font-size: 1.4rem;
    line-height: 1.35;
  }

  .article-hero .category {
    font-size: 0.8rem;
    padding: 2px 8px;
    margin-bottom: 0.75rem;
  }

  .back-link {
    font-size: 0.9rem;
    margin-bottom: 1rem;
  }

  .article-content {
    padding: 1.5rem 1rem;
    line-height: 1.7;
  }

  .article-content h2 {
    font-size: 1.2rem;
    margin: 1.75rem 0 0.6rem;
    padding-bottom: 0.4rem;
  }

  .article-content h3 {
    font-size: 1.05rem;
    margin: 1.25rem 0 0.4rem;
  }

  .article-content p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
  }

  .article-content ul,
  .article-content ol {
    margin: 0.75rem 0 1rem 1rem;
  }

  .article-content li {
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
  }

  .article-content blockquote {
    padding: 0.6rem 0.75rem;
    margin: 0.75rem 0;
    font-size: 0.9rem;
  }

  .article-content table {
    font-size: 0.85rem;
  }

  .article-content th,
  .article-content td {
    padding: 8px 10px;
  }

  .article-cta {
    padding: 1.25rem 1rem;
    margin: 1.5rem 0;
    border-radius: 8px;
  }

  .article-cta h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
  }

  .article-cta .btn {
    padding: 10px 16px;
    font-size: 0.9rem;
    width: 100%;
  }

  .related-articles {
    padding: 1.5rem 1rem;
  }

  .related-articles h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }

  .related-grid {
    gap: 0.75rem;
  }

  .related-card {
    padding: 1rem;
  }

  .related-card h4 {
    font-size: 0.9rem;
  }

  .related-card p {
    font-size: 0.8rem;
  }

  /* Knowledge Base Index */
  .knowledge-hero {
    padding: 85px 0 30px;
  }

  .knowledge-hero h1 {
    font-size: 1.4rem;
    padding: 0 0.5rem;
  }

  .knowledge-hero p {
    font-size: 0.9rem;
    padding: 0 1rem;
  }

  .articles-section {
    padding: 1.5rem 1rem;
  }

  .category-title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }

  .articles-grid {
    gap: 0.75rem;
    margin-bottom: 2rem;
  }

  .article-card {
    padding: 1rem;
    border-radius: 8px;
  }

  .article-card .category-tag {
    font-size: 0.75rem;
    padding: 3px 8px;
    margin-bottom: 0.5rem;
  }

  .article-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
  }

  .article-card p {
    font-size: 0.85rem;
  }

  /* Footer adjustments for articles */
  .footer {
    padding: 2rem 0 1rem;
  }

  .footer-bottom {
    padding: 1rem 0;
  }

  .footer-bottom p {
    font-size: 0.8rem;
  }
}