* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  color: #222;
  background: #f5f5f5;
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
}

header {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid #333;
}

h1 { font-size: 1.5rem; }
.subtitle { color: #555; font-size: 0.9rem; }

h2 { font-size: 1.15rem; margin-bottom: 0.75rem; }

.step { margin-bottom: 2rem; }
.hidden { display: none !important; }

.date-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.5rem;
}

.date-btn, .slot-btn {
  display: block;
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
  text-align: left;
  font-size: 0.9rem;
  border-radius: 4px;
}

.date-btn:hover, .slot-btn:hover:not(:disabled) {
  border-color: #333;
  background: #eee;
}

.date-btn.selected, .slot-btn.selected {
  border-color: #0066cc;
  background: #e6f0ff;
}

.slot-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.slot-btn .meta {
  display: block;
  font-size: 0.8rem;
  color: #555;
  margin-top: 0.25rem;
}

.slot-btn.full { border-color: #c00; }
.slot-btn.partial { border-color: #080; }
.slot-btn.unavailable { background: #eee; }

.card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1rem;
  margin-top: 0.75rem;
}

.form-row {
  margin: 0.75rem 0;
}

.form-row label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.form-row input[type="number"],
.form-row input[type="text"],
.form-row input[type="date"] {
  width: 100%;
  max-width: 200px;
  padding: 0.4rem 0.5rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

#type-selector label {
  display: block;
  margin: 0.4rem 0;
  font-weight: normal;
}

.hint { font-size: 0.85rem; color: #666; margin-top: 0.25rem; }
.price { font-size: 1.1rem; font-weight: 600; margin: 0.75rem 0; }
.error { color: #c00; margin: 0.5rem 0; }

button.primary {
  background: #0066cc;
  color: #fff;
  border: none;
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 0.5rem;
  margin-top: 0.5rem;
}

button.primary:hover { background: #0052a3; }
button.primary:disabled { background: #99b; cursor: not-allowed; }

button.secondary {
  background: #eee;
  border: 1px solid #ccc;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 0.5rem;
  margin-top: 0.5rem;
}

.link-btn {
  background: none;
  border: none;
  color: #0066cc;
  cursor: pointer;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  padding: 0;
}

.receipt p { margin: 0.35rem 0; }
.receipt .total { font-size: 1.15rem; font-weight: 700; margin-top: 0.75rem; }

footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid #ccc;
  font-size: 0.85rem;
  color: #666;
}

/* Admin */
#admin-sessions .session-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

#admin-sessions table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

#admin-sessions th, #admin-sessions td {
  border: 1px solid #ddd;
  padding: 0.3rem 0.5rem;
  text-align: left;
}

pre {
  background: #fff;
  border: 1px solid #ddd;
  padding: 0.75rem;
  overflow-x: auto;
  font-size: 0.8rem;
}