:root {
  --color-primary: #373187;
  --color-accent: #80ba53;
  --color-primary-dark: #2a2668;
  --color-accent-dark: #6ba041;
  --color-ink: #1f2430;
  --color-muted: #6b7280;
  --color-border: #e2e5eb;
  --color-bg: #f7f7f9;
  --color-card: #ffffff;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.5;
}

.demo-banner {
  background: #fffbeb;
  color: #92400e;
  border-bottom: 1px solid #fde68a;
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 10px 16px;
}

.site-header {
  background: var(--color-card);
  border-bottom: 4px solid var(--color-accent);
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.logo-link {
  display: block;
  background: #fff;
  padding: 12px 24px;
  border-radius: 12px;
}

.logo-image {
  max-height: 140px;
  width: auto;
  display: block;
}

.back-link {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
}
.back-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.hero {
  text-align: center;
  padding: 40px 0 28px;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 16px;
  color: var(--color-primary);
}

.hero p {
  color: var(--color-muted);
  text-align: left;
  max-width: 620px;
  margin: 0 auto;
}

.form-section {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

fieldset {
  border: none;
  padding: 0;
  margin: 0 0 28px;
}

fieldset:last-of-type {
  margin-bottom: 0;
}

legend {
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0 0 16px;
  width: 100%;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
  color: var(--color-primary);
}

.optional {
  font-weight: 400;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.hint {
  color: var(--color-muted);
  font-size: 0.85rem;
  margin-top: 6px;
}

.field {
  margin-bottom: 16px;
  flex: 1;
}

.field-narrow {
  max-width: 200px;
}

.field-grow {
  flex-grow: 1;
}

.field-row {
  display: flex;
  gap: 16px;
}

label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: #fff;
  font-family: inherit;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(55, 49, 135, 0.12);
}

input.field-invalid,
select.field-invalid {
  border-color: #c8102e;
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

input[readonly].field-autofilled {
  background: var(--color-bg);
  color: var(--color-muted);
}

.enfant-card {
  padding: 18px;
  background: var(--color-bg);
  border-radius: 8px;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
}

.etab-sup-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  font-size: 0.92rem;
}

.etab-sup-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.enfant-card .field-row {
  margin-bottom: 0;
}

.card-title {
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.tarifs {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.tarif-option {
  flex: 1;
  cursor: pointer;
}

.tarif-option input {
  position: absolute;
  opacity: 0;
}

.tarif-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.15s;
  height: 100%;
}

.tarif-option input:checked + .tarif-card {
  border-color: var(--color-accent);
  background: rgba(128, 186, 83, 0.08);
}

.prix {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.tarif-note {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.recap-section {
  background: rgba(55, 49, 135, 0.03);
}

.recap-lines {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 0.92rem;
}

.recap-lines .recap-line {
  display: flex;
  justify-content: space-between;
  color: var(--color-muted);
}

.recap-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 1.1rem;
}

.recap-total strong {
  font-size: 1.6rem;
  color: var(--color-accent-dark);
}

.form-errors {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 14px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.form-errors ul {
  margin: 6px 0 0;
  padding-left: 20px;
}

.submit-row {
  text-align: center;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 16px 40px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  padding: 16px 40px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
}

.btn-secondary:hover {
  background: var(--color-bg);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.site-footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  padding: 24px 0;
}

@media (max-width: 560px) {
  .field-row {
    flex-direction: column;
    gap: 0;
  }
  .tarifs {
    flex-direction: column;
  }
  .form-section {
    padding: 20px;
  }
}

/* Modale de confirmation (remplace window.confirm, plus fiable sur mobile
   et pas bloquée par les navigateurs après plusieurs déclenchements) */
.modal-overlay[hidden] {
  display: none;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(31, 36, 48, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

.modal-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.modal-box p {
  margin: 0 0 24px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: 12px;
}

.modal-actions .btn-primary,
.modal-actions .btn-secondary {
  width: auto;
  flex: 1;
  padding: 12px 16px;
  font-size: 0.92rem;
}