:root {
  --bg: #fafafa;
  --text: #1a1a1a;
  --muted: #666;
  --accent: #2b5fff;
  --border: #e3e3e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --text: #eaeaea;
    --muted: #9a9a9a;
    --accent: #6d9bff;
    --border: #2a2d33;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
}

header {
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

nav .links a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--muted);
}

nav .links a:hover {
  color: var(--accent);
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hero p {
  color: var(--muted);
}

.projects {
  display: grid;
  gap: 1.25rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}

.card h2 {
  margin: 0 0 0.4rem;
}

.card p {
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.card ul {
  color: var(--muted);
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
}

.card a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.posts {
  display: grid;
  gap: 2rem;
}

.post-preview h2 {
  margin: 0 0 0.2rem;
}

.post-preview h2 a {
  color: var(--text);
  text-decoration: none;
}

.post-preview time {
  color: var(--muted);
  font-size: 0.85rem;
}

article.post time {
  color: var(--muted);
  font-size: 0.85rem;
}

footer {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}