:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --border: #e0e0e0;
  --accent: #0055cc;
  --tag-bg: #f2f2f2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #8b949e;
    --border: #30363d;
    --accent: #58a6ff;
    --tag-bg: #161b22;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
}

body {
  margin: 0 auto;
  max-width: 800px;
  padding: 3rem 2rem 6rem;
}

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

a:hover {
  text-decoration: underline;
}

/* Site header */
.site-header {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.site-header h1 {
  align-self: flex-start;
  margin: 0.5rem 0 0;
  font-size: 1.75rem;
}

.site-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-links a {
  color: var(--muted);
  display: flex;
  align-items: center;
}

.site-links a:hover {
  color: var(--fg);
  text-decoration: none;
}

.bio {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

/* Tags */
.tag {
  display: inline-block;
  font-size: 0.75rem;
  background: var(--tag-bg);
  color: var(--muted);
  padding: 0.15em 0.5em;
  border-radius: 3px;
  margin-right: 0.25rem;
  border: 1px solid var(--border);
}

/* Post list */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.post-list li:first-child {
  border-top: 1px solid var(--border);
}

.post-excerpt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.post-meta {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Back button */
.back {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.back:hover {
  color: var(--fg);
  text-decoration: none;
}

/* Post header */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  color: var(--fg);
}

.post-description {
  margin: 0.25rem 0 0.75rem;
  font-size: 1rem;
  color: var(--muted);
}

/* Override github-markdown-css to use our bg/fg */
.markdown-body {
  background: transparent !important;
  color: var(--fg) !important;
  font-size: 1rem;
}

/* Code blocks */
pre.astro-code {
  padding: 1rem 1.25rem;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border);
  background-color: #f6f8fa !important;
}

@media (prefers-color-scheme: dark) {
  pre.astro-code {
    background-color: #161b22 !important;
  }
}

/* Shiki dual-theme dark mode */
@media (prefers-color-scheme: dark) {
  pre.astro-code,
  pre.astro-code span {
    color: var(--shiki-dark) !important;
    background-color: var(--shiki-dark-bg) !important;
  }
}