:root { color-scheme: light dark; --fg: #111; --muted: #666; --accent: #0066cc; --bg: #fff; --rule: #ddd; --input-bg: #fff; --input-border: #ccc; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #eee; --muted: #999; --accent: #6aaeff; --bg: #0d1117; --rule: #30363d; --input-bg: #161b22; --input-border: #30363d; }
}
* { box-sizing: border-box; }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: var(--fg); background: var(--bg);
  max-width: 760px; margin: 2rem auto; padding: 0 1rem;
}
h1 { margin-top: 0; font-size: 1.75rem; }
h2 { margin: 2rem 0 0.25rem; font-size: 1.1rem; }
h2 a { color: inherit; text-decoration: none; }
h2 a:hover { text-decoration: underline; }
p.lede { color: var(--muted); margin-top: 0; }
p.meta { color: var(--muted); font-size: 0.85em; margin: 0.25rem 0; }
p.breadcrumb { color: var(--muted); font-size: 0.9em; margin: 0 0 1rem; }
ul { list-style: none; padding: 0; margin: 0.5rem 0 0; }
li {
  padding: 0.55rem 0; border-top: 1px solid var(--rule);
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.4rem 0.9rem;
}
.course { font-weight: 600; flex: 1 1 200px; }
.next, .count { color: var(--muted); font-size: 0.88em; }
.next { flex-basis: 100%; margin-top: -0.15rem; }
a { color: var(--accent); }
.cta { white-space: nowrap; font-size: 0.92em; }
footer {
  margin-top: 3rem; padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted); font-size: 0.85em;
}
#filter {
  width: 100%; padding: 0.6rem 0.75rem; margin: 1rem 0 0.25rem;
  font: inherit; color: var(--fg);
  background: var(--input-bg);
  border: 1px solid var(--input-border); border-radius: 6px;
}
#filter:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
#no-matches { color: var(--muted); font-style: italic; }
section[hidden] { display: none; }