/* Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --border: #1e2535;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent2: #3fb950;
  --tag-bg: #1c2333;
  --tag-text: #79c0ff;
  --code-bg: #161b27;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  margin-bottom: 48px;
}
header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.1rem; font-weight: 700; color: var(--text); letter-spacing: -0.3px; }
.logo span { color: var(--accent); }
nav { display: flex; gap: 24px; }
nav a { font-size: 0.9rem; color: var(--text-muted); }
nav a:hover { color: var(--text); text-decoration: none; }

/* Footer */
footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}
footer .container { display: flex; justify-content: space-between; align-items: center; }

/* Post list */
.post-list { list-style: none; }
.post-item {
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.post-item:last-child { border-bottom: none; }
.post-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.post-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 10px; }
.post-title a { color: var(--text); }
.post-title a:hover { color: var(--accent); text-decoration: none; }
.post-excerpt { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 12px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 20px;
  border: 1px solid #2a3550;
}

/* Page header */
.page-header { margin-bottom: 40px; }
.page-header h1 { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.page-header .subtitle { color: var(--text-muted); }

/* Article */
article .meta {
  display: flex;
  gap: 16px;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
article h1 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; line-height: 1.3; }
article h2 { font-size: 1.35rem; font-weight: 600; margin: 36px 0 14px; color: var(--text); }
article h3 { font-size: 1.1rem; font-weight: 600; margin: 24px 0 10px; color: var(--text); }
article p { margin-bottom: 18px; }
article ul, article ol { margin: 0 0 18px 24px; }
article li { margin-bottom: 6px; }
article strong { color: #e6edf3; }

article pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 20px 0;
  font-size: 0.87rem;
  line-height: 1.6;
}
article code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.87em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
}
article pre code { background: none; border: none; padding: 0; font-size: inherit; }

/* About page */
.about-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1f6feb, #388bfd);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; margin-bottom: 20px;
}
.about-bio { margin-bottom: 36px; }
.stack-list { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.stack-item {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
}
.contact-list { list-style: none; margin-top: 12px; }
.contact-list li { margin-bottom: 10px; color: var(--text-muted); }
.contact-list li span { color: var(--text); }

.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 32px; }
.back-link:hover { color: var(--accent); text-decoration: none; }

/* Read more */
.read-more { font-size: 0.9rem; color: var(--accent); }

@media (max-width: 600px) {
  header .container { flex-direction: column; gap: 12px; align-items: flex-start; }
  article h1 { font-size: 1.6rem; }
  .page-header h1 { font-size: 1.6rem; }
}