/**
 * OAO Studio - Article Styles
 * Shared styles for AI knowledge articles
 * Version: 1.0
 * Last Updated: 2025-11-14
 */

/* ============================================
 * Article Container
 * ============================================ */
.article-container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

/* ============================================
 * Article Header
 * ============================================ */
.article-header {
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
}

.article-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.article-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ============================================
 * Article Sections
 * ============================================ */
.article-section {
  margin-bottom: var(--spacing-3xl);
}

.article-section h2 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-primary);
}

.article-section h3 {
  font-size: 1.3rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.article-section h4 {
  font-size: 1.1rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.article-section p {
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

/* ============================================
 * Content Lists
 * ============================================ */
.article-section ul,
.article-section ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.article-section li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

/* ============================================
 * Publish Info
 * ============================================ */
.publish-info {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin-bottom: var(--spacing-2xl);
}

.publish-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.publish-info ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.publish-info li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-primary);
}

/* ============================================
 * Special Components
 * ============================================ */

/* Highlight Box */
.highlight-box {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin: var(--spacing-xl) 0;
  border-radius: 4px;
}

.info-box {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.05));
  border-left: 4px solid #3b82f6;
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 4px;
}

.success-box {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
  border-left: 4px solid #10b981;
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 4px;
}

.warning-box {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
  border-left: 4px solid #ef4444;
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 4px;
}

/* Box Title (for info-box, success-box, etc.) */
.box-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-md) 0;
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: linear-gradient(135deg, #164e63 0%, #0e7490 100%);
  color: white;
  font-weight: 600;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover {
  background: var(--color-bg-secondary);
}

/* Pricing Box */
.pricing-box {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin: var(--spacing-xl) 0;
}

.pricing-box h3 {
  color: white;
  margin-top: 0;
}

/* References Section */
.references {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 2px solid var(--color-border);
}

.references h2 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.references ol {
  font-size: 0.9rem;
  line-height: 1.6;
}

.references li {
  margin-bottom: var(--spacing-sm);
  word-break: break-all;
}

/* Superscript (citations) */
sup {
  color: var(--color-primary);
  font-weight: 600;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  background: #10b981;
  color: white;
  margin-left: 0.5rem;
}

/* Code inline */
.article-section code {
  background: var(--color-bg-secondary);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

/* Code Block */
.code-block {
  background: #1e293b;
  color: #e2e8f0;
  padding: var(--spacing-lg);
  border-radius: 4px;
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
  font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

.code-block strong {
  color: #fbbf24;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.code-block pre,
.code-block code {
  color: #e2e8f0;
  background: transparent;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  padding: 0;
}

/* Syntax Highlighting Colors (Tokyo Night inspired) */
.code-block .hljs-keyword,
.code-block .hljs-selector-tag,
.code-block .hljs-literal,
.code-block .hljs-section,
.code-block .hljs-link {
  color: #bb9af7; /* Purple - keywords */
}

.code-block .hljs-string,
.code-block .hljs-attr,
.code-block .hljs-addition {
  color: #9ece6a; /* Green - strings */
}

.code-block .hljs-number,
.code-block .hljs-meta-string {
  color: #ff9e64; /* Orange - numbers */
}

.code-block .hljs-built_in,
.code-block .hljs-class .hljs-title,
.code-block .hljs-title.class_ {
  color: #7dcfff; /* Cyan - functions/classes */
}

.code-block .hljs-variable,
.code-block .hljs-template-variable {
  color: #e0af68; /* Yellow - variables */
}

.code-block .hljs-comment,
.code-block .hljs-quote {
  color: #9ca3af; /* Light gray - comments (WCAG AA compliant) */
  font-style: italic;
}

.code-block .hljs-name,
.code-block .hljs-attribute {
  color: #73daca; /* Teal - attributes */
}

.code-block .hljs-regexp,
.code-block .hljs-symbol {
  color: #f7768e; /* Red - special */
}

/* Comparison Card */
.comparison-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.comparison-item {
  padding: var(--spacing-lg);
  border-radius: 8px;
  background-color: var(--color-bg-secondary);
}

.comparison-item.without {
  border-left: 4px solid #ff6b6b;
}

.comparison-item.with {
  border-left: 4px solid #51cf66;
}

.comparison-item h4 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
}

.comparison-item p {
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.comparison-item ul {
  margin-left: var(--spacing-lg);
  margin-bottom: 0;
}

.comparison-item li {
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

/* Scenario Section */
.scenario-section {
  margin: var(--spacing-2xl) 0;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border-radius: 8px;
}

/* Feature Grid & Card */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.feature-card {
  background: white;
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.feature-card h4 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  font-size: 1.125rem;
}

.feature-card ul {
  margin: 0;
  padding-left: var(--spacing-lg);
}

.feature-card li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

/* Platform Grid & Card */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.platform-card {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.platform-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.platform-card.claude {
  border-color: #d97706;
}

.platform-card.chatgpt {
  border-color: #10b981;
}

.platform-card.gemini {
  border-color: #3b82f6;
}

.platform-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.platform-card.claude h3 {
  color: #d97706;
}

.platform-card.chatgpt h3 {
  color: #10b981;
}

.platform-card.gemini h3 {
  color: #3b82f6;
}

.platform-card .tagline {
  font-size: 0.9rem;
  color: #4b5563;
  font-style: italic;
  margin-bottom: 1.5rem;
}

.platform-card ul {
  margin: 0;
  padding-left: 1.5rem;
}

.platform-card li {
  margin-bottom: 0.5rem;
  color: #374151;
}

/* Feature Comparison */
.feature-comparison {
  background: #f9fafb;
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
}

.feature-comparison h3 {
  color: #1f2937;
  margin-bottom: 1rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 200px 1fr 1fr 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid #e5e7eb;
}

.feature-row:last-child {
  border-bottom: none;
}

.feature-name {
  font-weight: 600;
  color: #374151;
}

.feature-value {
  color: #4b5563;
  font-size: 0.9rem;
}

/* Rating Badge */
.rating {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.rating.excellent {
  background: #d1fae5;
  color: #065f46;
}

.rating.good {
  background: #dbeafe;
  color: #1e40af;
}

.rating.fair {
  background: #fef3c7;
  color: #92400e;
}

/* Decision Tree */
.decision-tree {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  border-left: 4px solid #3b82f6;
  border-radius: 12px;
  padding: 2rem;
  margin: 3rem 0;
}

.decision-tree h3 {
  color: #1e40af;
  margin-top: 0;
  margin-bottom: 1.5rem;
}

/* Price Note & Text Utilities */
.price-note {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

.text-success,
.highlight-text {
  color: #047857; /* Darker green (WCAG AA 4.5:1 compliant on white) */
  font-weight: 700;
}

.text-primary {
  color: var(--color-primary);
  font-weight: 700;
}

.text-center {
  text-align: center;
}

.mt-3 {
  margin-top: 3rem;
}

/* ============================================
 * Responsive Design
 * ============================================ */
@media (max-width: 768px) {
  .article-container {
    padding: var(--spacing-xl) var(--spacing-md);
  }

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

  .article-section h2 {
    font-size: 1.5rem;
  }

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

  .article-meta {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .comparison-card {
    grid-template-columns: 1fr;
  }
}