/* Shared styles for article/[slug].astro pages across all categories and languages */

.article-header {
  margin-bottom: 3rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.article-header h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

/* .article-description: typography moved to typography.css */
.article-description {
  margin-bottom: 1.5rem;
}

/* .article-meta base: shared with layout.css; only article-specific overrides */
.article-header .article-meta {
  gap: 0.75rem;
  color: var(--text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-primary);
}

.tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  background: var(--color-gradient);
  color: var(--text-inverse);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.featured-image {
  margin: 2rem 0 3rem 0;
  text-align: center;
}

.featured-image img {
  max-width: 100%;
  height: auto;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-primary);
}

/* .image-caption: typography moved to typography.css */
.image-caption {
  margin-top: 1rem;
}

.article-content {
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 2rem;
  margin: 2.5rem 0 1rem 0;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.5rem;
  margin: 2rem 0 1rem 0;
  color: var(--text-primary);
}

.article-content h4 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.75rem 0;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.article-content li {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
}

.article-content code {
  background: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-family: monospace;
  font-size: 0.9em;
  color: var(--text-primary);
}

.article-content pre {
  background: var(--bg-code-block);
  color: var(--text-code-block);
  padding: 1.5rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.related-calculators {
  margin: 3rem 0;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
  border: 1px solid var(--border-primary);
}

.related-calculators h2 {
  margin: 0 0 1.5rem 0;
  font-size: 1.5rem;
  text-align: center;
}

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

.calculator-card {
  display: block;
  background: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
  border: 1px solid var(--border-primary);
}

.calculator-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.calculator-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.1rem;
  color: var(--color-primary);
}

/* .calculator-card p: typography moved to typography.css */
.calculator-card p {
  margin: 0;
}

.related-articles {
  background: var(--bg-secondary);
  padding: 3rem 0;
  margin-top: 3rem;
}

.related-articles .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.related-articles h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
  color: var(--text-primary);
}

.article-card .article-meta {
  border: none;
  padding: 0;
  margin: 0;
}

/* ==========================================================================
   Blog CTA (from BlogCTA.astro)
   ========================================================================== */

.blog-cta {
  margin: 2.5rem 0;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--color-info-bg) 100%);
  border: 1px solid var(--color-primary-light);
  border-radius: 1rem;
  border-left: 4px solid #3245ff;
}

.blog-cta-content {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
}

.blog-cta-text {
  flex: 1;
}

.blog-cta-text h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.blog-cta-text p {
  margin: 0 0 1rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.blog-cta-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.blog-cta-features li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.blog-cta-features svg {
  color: var(--color-success);
  flex-shrink: 0;
}

.blog-cta-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.blog-btn-cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, #3245ff 0%, #bc52ee 100%);
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.blog-btn-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
}

.blog-cta-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Related Articles Section (from RelatedArticles.astro)
   ========================================================================== */

.related-articles-section {
  max-width: 70vw;
  min-width: 60vw;
  margin: 3rem auto 2rem;
  padding: 2rem;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-radius: 12px;
  border: 1px solid var(--border-primary);
}

.related-articles-section h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.related-articles-subtitle {
  margin: 0 0 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.related-article-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-primary);
  text-decoration: none;
  transition: all 0.2s;
}

.related-article-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary-sm);
  transform: translateY(-2px);
}

.related-article-card .article-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.4;
}

.related-article-card .read-more {
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ==========================================================================
   Related Calculators Section (from RelatedCalculators.astro)
   ========================================================================== */

.related-calculators-section {
  max-width: 70vw;
  min-width: 60vw;
  margin: 2rem auto 2rem;
  padding: 2rem;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--bg-tertiary) 100%);
  border-radius: 12px;
  border: 1px solid var(--border-primary);
}

.related-calculators-section h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.related-calculators-subtitle {
  margin: 0 0 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.related-calculators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.related-calculator-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-primary);
  text-decoration: none;
  transition: all 0.2s;
}

.related-calculator-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary-sm);
  transform: translateY(-2px);
}

.related-calculator-card .calculator-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.4;
}

.related-calculator-card .try-now {
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ==========================================================================
   Series Navigation (from SeriesNavigation.astro)
   ========================================================================== */

.series-navigation {
  margin: 2rem 0;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-radius: 1rem;
  border: 1px solid var(--border-primary);
}

.series-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.series-badge {
  background: linear-gradient(90deg, #3245ff 0%, #bc52ee 100%);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.series-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.next-article {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 0.5rem;
  border: 1px solid var(--border-primary);
}

.next-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.next-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.05rem;
}

.next-link:hover {
  text-decoration: underline;
}

.series-navigation .coming-soon {
  color: var(--text-muted);
}

.series-navigation .coming-soon em {
  font-style: italic;
}

.series-list {
  margin-top: 1rem;
}

.series-list summary {
  cursor: pointer;
  padding: 0.5rem 0;
  font-weight: 600;
  color: var(--text-secondary);
}

.series-list summary:hover {
  color: var(--color-primary);
}

.series-list ul {
  margin: 0.75rem 0 0 0;
  padding: 0;
  list-style: none;
}

.series-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #e2e8f0;
}

.series-list li:last-child {
  border-bottom: none;
}

.series-list li.current {
  background: var(--color-warning-bg);
  margin: 0 -0.5rem;
  padding: 0.5rem;
  border-radius: 0.25rem;
}

.series-list a {
  color: var(--color-primary);
  text-decoration: none;
}

.series-list a:hover {
  text-decoration: underline;
}

.series-list .current-article {
  color: var(--text-primary);
}

.series-list .upcoming {
  color: var(--text-muted);
}

.series-list .upcoming em {
  font-style: italic;
}

/* ==========================================================================
   Educational Content (from EducationalContent.astro)
   ========================================================================== */

.educational-content {
  max-width: 900px;
  margin: 2.5rem auto 0;
  text-align: left;
}

.educational-content details {
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  background: var(--bg-secondary);
  overflow: hidden;
}

.educational-content summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.educational-content summary::-webkit-details-marker {
  display: none;
}

.educational-content summary::before {
  content: '\25B6';
  font-size: 0.75rem;
  color: var(--color-primary);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.educational-content details[open] summary::before {
  transform: rotate(90deg);
}

.educational-content summary h2 {
  font-size: 1.15rem;
  margin: 0;
  color: var(--text-primary);
  background: none;
  -webkit-text-fill-color: var(--text-primary);
}

.educational-body {
  padding: 0 1.5rem 1.5rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.educational-body h3 {
  font-size: 1.05rem;
  color: var(--text-primary);
  margin: 1.5rem 0 0.5rem;
}

.educational-body h3:first-child {
  margin-top: 0;
}

.educational-body p {
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
}

.educational-body ol,
.educational-body ul {
  padding-left: 1.5rem;
  margin: 0 0 0.75rem;
}

.educational-body li {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   Responsive — Article Pages
   ========================================================================== */

@media (max-width: 1024px) {
  .related-articles-section,
  .related-calculators-section {
    max-width: 90%;
  }
}

@media (max-width: 768px) {
  .article-header h1 {
    font-size: 2rem;
  }
  .article-description {
    font-size: 1.1rem;
  }
  .calculators-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-content h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 700px) {
  .blog-cta {
    padding: 1.25rem;
  }

  .blog-cta-content {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }

  .blog-cta-features {
    justify-content: center;
  }

  .blog-cta-action {
    width: 100%;
  }

  .blog-btn-cta {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .series-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .related-articles-section,
  .related-calculators-section {
    max-width: 95%;
    padding: 1.5rem;
  }

  .related-articles-grid,
  .related-calculators-grid {
    grid-template-columns: 1fr;
  }
}