:root {
  --bg: #0a0a0f;
  --bg-surface: #12121a;
  --bg-hover: #1a1a26;
  --border: #2a2a3a;
  --text: #e0e0e8;
  --text-muted: #8888a0;
  --accent: #ff6b35;
  --accent-glow: rgba(255, 107, 53, 0.15);
  --code-bg: #1a1a26;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

.blog-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 100;
  gap: 24px;
}
.blog-nav-brand {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}
.blog-nav-title {
  color: var(--text-muted);
  font-size: 14px;
}
.blog-nav-title a {
  color: var(--text-muted);
  text-decoration: none;
}
.blog-nav-title a:hover {
  color: var(--text);
}

.blog-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 24px 60px;
}

/* Index page */
.blog-header h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
}
.blog-header p {
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 18px;
}
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.blog-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  transition: border-color 0.2s;
}
.blog-card:hover {
  border-color: var(--accent);
}
.blog-card a {
  text-decoration: none;
  color: inherit;
}
.blog-card h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.blog-card-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.blog-card p.blog-card-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* Post page */
.blog-post-header {
  margin-bottom: 40px;
}
.blog-post-header h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}
.blog-post-meta {
  font-size: 14px;
  color: var(--text-muted);
}

.blog-post-body h2 {
  font-size: 24px;
  font-weight: 600;
  margin-top: 36px;
  margin-bottom: 12px;
}
.blog-post-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 8px;
}
.blog-post-body p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
}
.blog-post-body ul, .blog-post-body ol {
  margin-bottom: 16px;
  padding-left: 24px;
}
.blog-post-body li {
  margin-bottom: 6px;
  line-height: 1.7;
}
.blog-post-body a {
  color: var(--accent);
  text-decoration: none;
}
.blog-post-body a:hover {
  text-decoration: underline;
}
.blog-post-body code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}
.blog-post-body pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 20px;
}
.blog-post-body pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
}
.blog-post-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  margin: 20px 0;
  color: var(--text-muted);
  font-style: italic;
}

.blog-back {
  display: inline-block;
  margin-top: 40px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
}
.blog-back:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .blog-container { padding: 72px 16px 40px; }
  .blog-post-header h1 { font-size: 28px; }
}