:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #888;
  --accent: #0066cc;
  --error: #c0392b;
  --card-bg: #fff;
  --border: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #e8e8e8;
    --muted: #888;
    --accent: #4ea1ff;
    --error: #ff6b6b;
    --card-bg: #1e2126;
    --border: #2a2d33;
  }
}

* { box-sizing: border-box; }

body {
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 600;
  text-decoration: none;
  color: var(--fg);
}

nav a {
  color: var(--accent);
  text-decoration: none;
  margin-left: 16px;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
}

.card h1, .card h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.login {
  max-width: 360px;
  margin: 80px auto;
}

.login label {
  display: block;
  margin: 12px 0;
}

.login input[type=password] {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  font: inherit;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

button {
  font: inherit;
  padding: 8px 14px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

dl.kv {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 16px;
  margin: 0;
}

dl.kv dt {
  color: var(--muted);
}

.muted { color: var(--muted); }
.error { color: var(--error); }

.footer {
  text-align: center;
  font-size: 0.85rem;
  margin-top: 12px;
}

.status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.78rem;
  background: var(--border);
}

.status-queued, .status-scheduled { background: #fff3cd; color: #856404; }
.status-enrolled { background: #d4edda; color: #155724; }
.status-failed { background: #f8d7da; color: #721c24; }
.status-canceled, .status-deregistered { background: var(--border); color: var(--muted); }

.alert {
  border-left: 4px solid #d9822b;
  background: #fff7e6;
}
@media (prefers-color-scheme: dark) {
  .alert {
    background: #2a2114;
    border-left-color: #d9822b;
  }
}

.button-link {
  display: inline-block;
  padding: 8px 14px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

.help {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.howto h3 {
  margin: 18px 0 8px;
  font-size: 0.95rem;
}

.howto dl.cmds {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 14px;
  row-gap: 6px;
  margin: 0 0 8px;
}

.howto dl.cmds dt {
  white-space: nowrap;
}

.howto dl.cmds dd {
  margin: 0;
}

.howto ul, .howto ol {
  margin: 4px 0 0;
  padding-left: 22px;
}

.status-legend {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.status-legend li {
  font-size: 0.9rem;
}

.welcome h1 {
  margin: 0 0 4px;
  font-size: 1.3rem;
}

code {
  background: var(--bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.88rem;
}