:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6a6a6a;
  --border: #e2e2e2;
  --accent: #3b5bdb;
  --error: #c92a2a;
  --card: #f7f7f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --fg: #e8e8ea;
    --muted: #9a9aa2;
    --border: #2a2d34;
    --accent: #748ffc;
    --error: #ff8787;
    --card: #1e2128;
  }
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
header h1 {
  font-size: 1.1rem;
  margin: 0;
  letter-spacing: 0.02em;
}
.user {
  font-size: 0.85rem;
  color: var(--muted);
}
.user a,
a {
  color: var(--accent);
  text-decoration: none;
}
.user a:hover,
a:hover {
  text-decoration: underline;
}
main {
  max-width: 780px;
  margin: 0 auto;
  padding: 1.5rem;
}
h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.75rem;
}
.muted {
  color: var(--muted);
}
.error {
  color: var(--error);
}
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
}
.btn:hover {
  text-decoration: none;
  opacity: 0.9;
}
ul.repos {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
ul.repos li {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}
ul.repos .name {
  font-weight: 600;
}
ul.repos .desc {
  color: var(--fg);
  margin-top: 0.15rem;
}
ul.repos .meta {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  margin-top: 0.3rem;
}