/* article.css — Styles for individual article detail pages */

.article-page {
  padding: 60px 0 80px;
}

.article-page .crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}
.article-page .crumb a { color: var(--muted); text-decoration: none; }
.article-page .crumb a:hover { color: var(--accent); }
.article-page .crumb span { color: var(--accent); }

.article-head { max-width: 820px; margin: 0 auto 40px; text-align: center; }

.article-cat {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.article-head h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.article-meta .dot { opacity: 0.5; }

.article-cover {
  max-width: 1000px;
  margin: 0 auto 56px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 9;
  background: var(--paper-2);
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }

.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.85;
  color: var(--body);
}

.article-content > * + * { margin-top: 1.4em; }

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 2.2em;
  margin-bottom: 0.6em;
  line-height: 1.3;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 1.8em;
  margin-bottom: 0.5em;
  line-height: 1.4;
}

.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 1.5em;
  margin-bottom: 0.4em;
}

.article-content p { line-height: 1.85; }

.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.article-content a:hover { text-decoration-thickness: 2px; }

.article-content strong { color: var(--ink); font-weight: 700; }

.article-content ul, .article-content ol {
  padding-left: 1.6em;
  line-height: 1.85;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-top: 0.4em; }
.article-content li::marker { color: var(--accent); }

.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: var(--paper-2);
  padding: 20px 24px;
  margin: 1.8em 0;
  font-style: italic;
  color: var(--ink);
  border-radius: 0 4px 4px 0;
}
.article-content blockquote p { margin: 0; }

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--accent);
}

.article-content pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 20px 24px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 1.6em 0;
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--line);
  display: block;
  margin: 1.6em auto;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 15px;
}
.article-content th, .article-content td {
  border: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--paper-2);
  font-weight: 700;
  color: var(--ink);
}

.article-content hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.4em 0;
}

.article-foot {
  max-width: 760px;
  margin: 60px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.article-back {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: opacity 0.2s;
}
.article-back:hover { opacity: 0.7; }

/* Related articles */
.related-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.related-list {
  border-top: 1px solid var(--line);
}
.related-list .pub-item {
  text-decoration: none;
  color: inherit;
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 28px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
}
.related-list .pub-item:hover { background: var(--paper-2); }
.related-list .pub-item:hover .pub-title { color: var(--accent); }

/* Responsive */
@media (max-width: 768px) {
  .article-page { padding: 40px 0 60px; }
  .article-head h1 { font-size: 28px; }
  .article-content { font-size: 16px; }
  .article-content h2 { font-size: 22px; }
  .article-content h3 { font-size: 19px; }
  .article-cover { aspect-ratio: 4 / 3; margin-bottom: 36px; }
  .related-list .pub-item {
    grid-template-columns: 80px 1fr;
    gap: 16px;
    padding: 20px 4px;
  }
  .related-list .pub-cat { display: none; }
}