/* === Article: Long-form prose typography === */

/* --- Article Layout --- */
.article {
  padding-bottom: var(--space-4xl);
}

/* --- Article Header --- */
.article-header {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-3xl);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
}

.article-date {
  color: var(--text-muted);
}

.article-divider {
  color: var(--border-default);
}

.article-read-time {
  color: var(--text-muted);
}

.article-tags {
  display: flex;
  gap: var(--space-sm);
}

.article-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.03em;
  max-width: 26ch;
  margin-bottom: var(--space-xl);
}

.article-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 60ch;
  margin-bottom: 0;
}

/* --- Article Body --- */
.article-body {
  /* content width matches the prose max-width */
}

.article-content {
  max-width: 680px;
  margin: 0 auto;
}

/* --- Prose Typography --- */
.article-content p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  max-width: none;
}

.article-content p:last-child {
  margin-bottom: 0;
}

.article-content h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-xl);
  letter-spacing: -0.02em;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.015em;
}

.article-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.article-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.article-content em {
  font-style: italic;
  color: var(--text-secondary);
}

/* --- Lists --- */
.article-content ul,
.article-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.article-content li {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.article-content li strong {
  color: var(--text-primary);
}

/* --- Code Blocks --- */
.article-content pre {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  overflow-x: auto;
  position: relative;
}

.article-content pre code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: none;
  padding: 0;
  border: none;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: var(--accent);
  background: rgba(245, 158, 11, 0.08);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(245, 158, 11, 0.12);
}

/* --- Blockquote --- */
.article-content blockquote {
  border-left: 3px solid var(--accent);
  margin: var(--space-xl) 0;
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content blockquote p {
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 0;
}

/* --- Horizontal Rule --- */
.article-content hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-3xl) 0;
}

/* --- Links in prose --- */
.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(245, 158, 11, 0.3);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-fast) var(--ease-out-expo),
              color var(--duration-fast) var(--ease-out-expo);
}

.article-content a:hover {
  color: var(--accent-dim);
  text-decoration-color: var(--accent-dim);
}

/* --- Article Footer --- */
.article-footer {
  margin-top: var(--space-4xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border-subtle);
}

.article-nav {
  display: flex;
  justify-content: flex-start;
  max-width: 680px;
  margin: 0 auto;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

.article-back:hover {
  color: var(--accent);
}

.article-back-icon {
  font-family: var(--font-mono);
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.article-back:hover .article-back-icon {
  transform: translateX(-3px);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .article-title {
    max-width: 20ch;
  }
}