* { box-sizing: border-box; }

:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --border: #30363d;
  --accent: #58a6ff;
  --code-bg: #1a2029;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
  line-height: 1.6;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.site-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.site-header nav a {
  margin-left: 16px;
  color: var(--text-muted);
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.wrapper {
  min-height: 60vh;
  padding: 30px 0;
}

h1, h2, h3, h4 {
  color: #e6edf3;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.3em;
}

.post-header .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.post-header .meta a {
  color: var(--accent);
}

.post-list {
  list-style: none;
  padding: 0;
}

.post-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.post-list a {
  color: var(--text);
}

.post-list a:hover {
  color: var(--accent);
}

.post-list .date {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-right: 10px;
}

.post-list .section-tag {
  margin-left: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 10px;
}

a {
  color: var(--accent);
}

.content {
  margin-top: 1.5em;
}

.content ul, .content ol {
  padding-left: 1.5em;
}

.content pre {
  background: var(--code-bg);
  padding: 12px;
  overflow-x: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.content code {
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}

.content pre code {
  background: none;
  padding: 0;
}

.content blockquote {
  border-left: 3px solid var(--border);
  margin-left: 0;
  padding-left: 1em;
  color: var(--text-muted);
}

.content hr {
  border: none;
  border-top: 1px solid var(--border);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--text-muted);
}

.fb-comments {
  margin-top: 2em;
}