:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --fg: #e8eef5;
  --muted: #9fb0c3;
  --card: #161d27;
  --accent: #5bc0de;
  --danger: #ff6b6b;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --fg: #142032;
    --muted: #4b5b73;
    --card: #ffffff;
    --accent: #0b6fa4;
    --danger: #b00020;
  }
}

* {
  box-sizing: border-box;
}

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

.site-header {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.25rem 1rem;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.note,
.meta {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.meta {
  font-size: 0.85rem;
}

.error {
  margin-top: 0.75rem;
  color: var(--danger);
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  display: grid;
  gap: 1.25rem;
}

.session {
  background: var(--card);
  border: 1px solid rgba(127, 155, 190, 0.22);
  border-radius: 12px;
  padding: 1.1rem 1.25rem 1.25rem;
}

.session h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  border-bottom: 1px solid rgba(127, 155, 190, 0.22);
  padding-bottom: 0.5rem;
}

.names {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.35rem 0.75rem;
}

.names li {
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  background: rgba(91, 192, 222, 0.14);
}

@media (prefers-color-scheme: light) {
  .names li {
    background: rgba(11, 111, 164, 0.1);
  }
}

.empty {
  margin: 0;
  color: var(--muted);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}