.cb-app {
  --cb-accent: #1d5c63;
  --cb-ink: #1b2430;
  --cb-muted: #5f6b7a;
  --cb-line: #d9dee5;
  --cb-soft: #f3f5f7;
  max-width: 880px;
  margin: 1.5em auto;
  color: var(--cb-ink);
  font-size: 1rem;
  line-height: 1.5;
}
.cb-app *, .cb-app *::before, .cb-app *::after { box-sizing: border-box; }

.cb-wrap {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(260px, 1fr);
  gap: 2rem;
  align-items: start;
  padding: 1.5rem;
  background: #fff;
  border: 1px solid var(--cb-line);
  border-radius: 10px;
}
@media (max-width: 720px) {
  .cb-wrap { grid-template-columns: 1fr; padding: 1rem; gap: 1.5rem; }
}

/* Calendrier */
.cb-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .75rem; }
.cb-month { margin: 0; font-size: 1.2rem; font-weight: 600; }
.cb-nav {
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  border: 1px solid var(--cb-line); background: #fff; color: var(--cb-ink);
  font-size: 1.4rem; line-height: 1; cursor: pointer; padding: 0;
}
.cb-nav:hover:not(:disabled) { border-color: var(--cb-accent); color: var(--cb-accent); }
.cb-nav:disabled { opacity: .35; cursor: default; }

.cb-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; transition: opacity .15s; }
.cb-grid.is-loading { opacity: .45; }
.cb-wd { text-align: center; font-size: .8rem; color: var(--cb-muted); padding: .25rem 0; }
.cb-day {
  aspect-ratio: 1 / 1; border: 0; border-radius: 8px; background: transparent;
  color: #9aa4b1; font-size: .95rem; padding: 0; cursor: default;
}
.cb-day.is-open {
  background: var(--cb-soft); color: var(--cb-ink); font-weight: 600; cursor: pointer;
  box-shadow: inset 0 -3px 0 var(--cb-accent);
}
.cb-day.is-open:hover { background: #e6ebef; }
.cb-day.is-selected { background: var(--cb-accent); color: #fff; box-shadow: none; }
.cb-note { margin: .9rem 0 0; font-size: .82rem; color: var(--cb-muted); }

/* Panneau latéral */
.cb-side-title { margin: 0 0 .75rem; font-size: 1.1rem; font-weight: 600; text-transform: capitalize; }
.cb-hint { margin: 0; color: var(--cb-muted); }
.cb-error { margin: 0 0 .75rem; padding: .6rem .8rem; border-left: 3px solid #b3261e; background: #fbeceb; color: #7a1a15; border-radius: 4px; }
.cb-slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); gap: 8px; margin-bottom: 1.25rem; }
.cb-slot {
  padding: .55rem 0; border: 1px solid var(--cb-accent); border-radius: 8px;
  background: #fff; color: var(--cb-accent); font-weight: 600; cursor: pointer; font-size: .95rem;
}
.cb-slot:hover { background: var(--cb-soft); }
.cb-slot.is-selected { background: var(--cb-accent); color: #fff; }

/* Formulaire */
.cb-form { border-top: 1px solid var(--cb-line); padding-top: 1rem; }
.cb-recap { margin: 0 0 .9rem; font-weight: 600; text-transform: capitalize; }
.cb-field { margin-bottom: .8rem; }
.cb-field label { display: block; margin-bottom: .25rem; font-size: .9rem; }
.cb-field input, .cb-field select, .cb-field textarea {
  width: 100%; padding: .55rem .7rem; font: inherit; color: var(--cb-ink);
  border: 1px solid #b8c0ca; border-radius: 6px; background: #fff;
}
.cb-field textarea { resize: vertical; }
.cb-trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.cb-btn {
  display: inline-block; width: 100%; padding: .75rem 1rem; border: 0; border-radius: 8px;
  background: var(--cb-accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer;
}
.cb-btn:hover:not(:disabled) { filter: brightness(1.1); }
.cb-btn:disabled { opacity: .6; cursor: default; }
.cb-btn-ghost { background: transparent; color: var(--cb-accent); border: 1px solid var(--cb-accent); margin-top: .5rem; }

.cb-success h3 { margin: 0 0 .5rem; font-size: 1.2rem; color: var(--cb-accent); }
.cb-success p { margin: 0 0 1rem; }

.cb-app button:focus-visible, .cb-app input:focus-visible, .cb-app select:focus-visible, .cb-app textarea:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--cb-accent) 45%, transparent); outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) { .cb-grid { transition: none; } }

/* --- Paiement, niveaux, adresse --- */
.cb-row { display: grid; grid-template-columns: 1fr 2fr; gap: .75rem; }
.cb-levels { border: 0; margin: 0 0 .9rem; padding: 0; min-width: 0; }
.cb-levels legend { padding: 0; margin-bottom: .35rem; font-size: .9rem; }
.cb-level {
  display: flex; align-items: center; gap: .6rem; padding: .6rem .75rem; margin-bottom: 6px;
  border: 1px solid #b8c0ca; border-radius: 8px; cursor: pointer; background: #fff;
}
.cb-level:hover { border-color: var(--cb-accent); }
.cb-level:has(input:checked) { border-color: var(--cb-accent); background: var(--cb-soft); box-shadow: inset 0 0 0 1px var(--cb-accent); }
.cb-level input { accent-color: var(--cb-accent); margin: 0; }
.cb-level-name { flex: 1; font-weight: 600; }
.cb-level-price { color: var(--cb-accent); font-weight: 600; white-space: nowrap; }
.cb-check { display: flex; gap: .55rem; align-items: flex-start; margin: .2rem 0 .9rem; font-size: .88rem; }
.cb-check input { margin-top: .25rem; accent-color: var(--cb-accent); }
.cb-check a { color: var(--cb-accent); }
.cb-secure { margin: .6rem 0 0; font-size: .8rem; color: var(--cb-muted); text-align: center; }

/* Messages au retour de Stripe */
.cb-notice { padding: 1.1rem 1.25rem; border-radius: 10px; border: 1px solid var(--cb-line); background: #fff; }
.cb-notice h3 { margin: 0 0 .4rem; font-size: 1.15rem; }
.cb-notice p { margin: 0; }
.cb-notice-ok { border-left: 4px solid var(--cb-accent); }
.cb-notice-ok h3 { color: var(--cb-accent); }
.cb-notice-warn { border-left: 4px solid #c47f00; background: #fff8ec; }
.cb-notice a { color: var(--cb-accent); font-weight: 600; }