:root {
  --bg: #0f0f11;
  --fg: #e7e7ea;
  --muted: #8b8b93;
  --line: #232327;
  --card: #141417;
  --card-hover: #191920;
  --accent: #d98a5b;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbfc;
    --fg: #1a1a1e;
    --muted: #6b6b73;
    --line: #e6e6ea;
    --card: #ffffff;
    --card-hover: #f4f4f6;
    --accent: #b5561f;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 8vh 24px 64px;
}

/* header */
.head h1 {
  margin: 0;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tag {
  margin: 6px 0 0;
  color: var(--muted);
}

.links {
  margin-top: 16px;
  display: flex;
  gap: 18px;
}

.links a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  font-size: 0.95rem;
}

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

/* projects */
.projects { margin-top: 60px; }

.projects h2 {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 18px;
}

.repos {
  display: grid;
  gap: 10px;
}

.loading, .fallback {
  color: var(--muted);
  font-size: 0.95rem;
}

.fallback a { color: var(--fg); }

/* repo card */
.repo {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  text-decoration: none;
  color: inherit;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.12s ease;
}

.repo:hover {
  background: var(--card-hover);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
}

.repo-top {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.repo-name {
  font-family: var(--mono);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--fg);
}

.repo-fork {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 7px;
}

.repo-desc {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.repo-meta {
  margin-top: 10px;
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 0.82rem;
  color: var(--muted);
  font-family: var(--mono);
}

.lang { display: inline-flex; align-items: center; gap: 6px; }

.lang-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--muted);
  display: inline-block;
}

/* footer */
.foot {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  font-family: var(--mono);
}

.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--fg); }
.dot { margin: 0 8px; }

@media (max-width: 520px) {
  main { padding: 6vh 18px 48px; }
  .projects { margin-top: 44px; }
}