:root {
  --ink: #23272c;
  --ink-soft: #5b636d;
  --line: #d8dee5;
  --surface: #f5f7f9;
  --accent: #23628f;
  --accent-soft: #e6f1fb;
  --danger: #a3262a;
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.55 system-ui, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--surface);
}
a { color: var(--accent); }
header, footer, main { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; padding-bottom: 20px; }
header .brand { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
main { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 28px; }
footer { display: flex; flex-wrap: wrap; gap: 8px 20px; padding-top: 20px; padding-bottom: 32px; font-size: 14px; color: var(--ink-soft); }
footer a { color: var(--ink-soft); }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 28px 0 12px; }
p { margin: 0 0 12px; }
.muted { color: var(--ink-soft); }
.types { display: grid; gap: 12px; padding: 0; list-style: none; }
.types a {
  display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px;
  text-decoration: none; color: var(--ink);
}
.types a:hover { border-color: var(--accent); }
.days, .times { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.days a, .times a {
  display: inline-block; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px;
  text-decoration: none; color: var(--ink); background: #fff;
}
.days a[aria-current="date"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.times a { min-width: 76px; text-align: center; font-variant-numeric: tabular-nums; }
.days a:hover, .times a:hover { border-color: var(--accent); }
.summary { padding: 12px 16px; border-radius: 8px; background: var(--accent-soft); margin-bottom: 20px; }
form { display: grid; gap: 14px; }
label { display: grid; gap: 4px; font-weight: 600; font-size: 14px; }
label small { font-weight: 400; color: var(--ink-soft); }
input, textarea {
  font: inherit; color: inherit; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; width: 100%;
}
textarea { min-height: 110px; resize: vertical; }
[aria-invalid="true"] { border-color: var(--danger); }
.error { color: var(--danger); font-weight: 400; font-size: 14px; }
.alert { padding: 12px 16px; border-radius: 8px; background: #f6e7e7; color: var(--danger); }
button {
  font: inherit; font-weight: 600; cursor: pointer; padding: 12px 20px; border-radius: 8px;
  border: 0; background: var(--ink); color: #fff; justify-self: start;
}
button:hover { background: #0f1215; }