/* SEO Starter Theme — minimal, fast, readable */

:root {
  --max-width: 740px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --color-bg: #fff;
  --color-text: #1a1a1a;
  --color-muted: #666;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e5e7eb;
  --color-card-bg: #f9fafb;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 17px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}
.site-header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text);
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}
.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.nav-links a:hover { color: var(--color-accent); }

/* Main content */
.content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Article cards */
.article-card {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}
.article-card h2, .article-card h3 {
  margin-bottom: 0.25rem;
}
.article-card h2 a, .article-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}
.article-card h2 a:hover, .article-card h3 a:hover {
  color: var(--color-accent);
}
.article-card .meta {
  color: var(--color-muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

/* Single post */
.single-post { padding-bottom: 3rem; }
.post-header { margin-bottom: 2rem; }
.post-header h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}
.post-meta {
  color: var(--color-muted);
  font-size: 0.9rem;
}
.category {
  background: var(--color-card-bg);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--color-accent);
}

/* Post content */
.post-content h2 {
  font-size: 1.5rem;
  margin: 2rem 0 0.75rem;
  padding-top: 0.5rem;
}
.post-content h3 {
  font-size: 1.2rem;
  margin: 1.5rem 0 0.5rem;
}
.post-content p { margin-bottom: 1rem; }
.post-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post-content a:hover { color: var(--color-accent-hover); }
.post-content ul, .post-content ol {
  margin: 0.75rem 0 1rem 1.5rem;
}
.post-content li { margin-bottom: 0.35rem; }
.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  color: var(--color-muted);
  margin: 1rem 0;
}

/* Tables */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.post-content th, .post-content td {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.post-content th {
  background: var(--color-card-bg);
  font-weight: 600;
}
.post-content tr:nth-child(even) {
  background: var(--color-card-bg);
}

/* Tags */
.post-tags {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag {
  background: var(--color-card-bg);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--color-muted);
}
.tag:hover { color: var(--color-accent); }

/* Related posts */
.related-posts {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.related-posts h2 { font-size: 1.2rem; margin-bottom: 0.75rem; }
.related-posts ul { list-style: none; }
.related-posts li { margin-bottom: 0.5rem; }
.related-posts a {
  color: var(--color-accent);
  text-decoration: none;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.site-footer a { color: var(--color-muted); }
.site-footer a:hover { color: var(--color-accent); }

/* Responsive */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .post-header h1 { font-size: 1.5rem; }
  .content { padding: 1.5rem 1rem; }
}