:root {
  --bg: #fdfdfd;
  --fg: #1a1a2e;
  --accent: #4361ee;
  --muted: #6c757d;
  --border: #e0e0e0;
  --code-bg: #f4f4f8;
  --max-width: 48rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #e0e0e0;
    --accent: #7f9cf5;
    --muted: #94a1b2;
    --border: #2e2e38;
    --code-bg: #1e1e28;
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  padding: 0 1.5rem;
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}

.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.nav-links a:hover { color: var(--accent); }

main {
  max-width: var(--max-width);
  margin: 2rem auto;
}

footer {
  max-width: var(--max-width);
  margin: 3rem auto 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--muted); }

/* Hero */
.hero { margin-bottom: 2.5rem; }
.hero h1 { font-size: 2rem; margin-bottom: 0.25rem; }
.hero p { color: var(--muted); font-size: 1.1rem; }

/* Post list */
.posts { display: flex; flex-direction: column; gap: 1.5rem; }
.post-summary time { color: var(--muted); font-size: 0.85rem; }
.post-summary h2 { font-size: 1.25rem; margin-bottom: 0.1rem; }
.post-summary h2 a { color: var(--fg); text-decoration: none; }
.post-summary h2 a:hover { color: var(--accent); }
.post-summary p { color: var(--muted); font-size: 0.95rem; margin-top: 0.3rem; }

/* Single post */
.post-header { margin-bottom: 2rem; }
.post-header h1 { font-size: 1.8rem; margin-bottom: 0.3rem; }
.post-header time { color: var(--muted); font-size: 0.9rem; }
.tags { margin-top: 0.5rem; display: flex; gap: 0.5rem; }
.tag {
  background: var(--code-bg);
  color: var(--muted);
  padding: 0.15rem 0.6rem;
  border-radius: 3px;
  font-size: 0.8rem;
}

.post-content h2 { margin-top: 2rem; margin-bottom: 0.5rem; font-size: 1.4rem; }
.post-content h3 { margin-top: 1.5rem; margin-bottom: 0.4rem; font-size: 1.15rem; }
.post-content p { margin-bottom: 1rem; }
.post-content ul, .post-content ol { margin-bottom: 1rem; padding-left: 1.5rem; }
.post-content li { margin-bottom: 0.75rem; padding-left: 1rem; text-indent: -1rem; }
.post-content li br + * { text-indent: 0; }
.post-content li br { display: block; margin-bottom: 0.15rem; }
.post-content a { color: var(--accent); }
.post-content code {
  background: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}
.post-content pre {
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1rem;
}
.post-content pre code { background: none; padding: 0; }
.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.pagination a { color: var(--accent); text-decoration: none; }

.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.post-nav a { color: var(--accent); text-decoration: none; font-size: 0.9rem; }