/* ==========================================================================
   B1NG — Formulaire de devis multi-étapes
   Mobile-first, aucune police externe, variables héritées de style-money-page.css
   (valeurs de repli ci-dessous si le thème ne les définit pas).
   ========================================================================== */

.b1ng-form {
  --b1ng-bleu: var(--mp-bleu, #14345c);
  --b1ng-bleu-clair: var(--mp-bleu-clair, #e8eef7);
  --b1ng-orange: var(--mp-orange, #e8792b);
  --b1ng-orange-fonce: var(--mp-orange-fonce, #c9621b);
  --b1ng-texte: var(--mp-texte, #1f2933);
  --b1ng-muted: var(--mp-muted, #5f6b7a);
  --b1ng-bord: var(--mp-bord, #d6dde6);
  --b1ng-erreur: #b42318;
  --b1ng-ok: #1b7f4b;
  --b1ng-fond: #ffffff;
  --b1ng-radius: 10px;

  box-sizing: border-box;
  background: var(--b1ng-fond);
  border: 1px solid var(--b1ng-bord);
  border-radius: var(--b1ng-radius);
  padding: 1.25rem;
  color: var(--b1ng-texte);
  font-size: 1rem;
  line-height: 1.45;
  box-shadow: 0 6px 24px rgba(20, 52, 92, 0.08);
}
.b1ng-form *, .b1ng-form *::before, .b1ng-form *::after { box-sizing: inherit; }

.b1ng-form--sidebar { padding: 1rem; }
.b1ng-form--inline { max-width: 680px; margin: 2rem auto; }

.b1ng-form__noscript { margin: 0; }

/* --- En-tête --- */
.b1ng-form__header { margin-bottom: 0.75rem; }
.b1ng-form__title {
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--b1ng-bleu);
  line-height: 1.25;
}
.b1ng-form__subtitle { margin: 0; color: var(--b1ng-muted); font-size: 0.9rem; }

/* --- Progression --- */
.b1ng-form__progress { margin: 0.5rem 0 0.25rem; }
.b1ng-form__progress-track {
  display: block;
  height: 8px;
  background: var(--b1ng-bleu-clair);
  border-radius: 999px;
  overflow: hidden;
}
.b1ng-form__progress-fill {
  display: block;
  height: 100%;
  width: 25%;
  background: var(--b1ng-orange);
  border-radius: 999px;
  transition: width 0.3s ease;
}
.b1ng-form__progress-label {
  display: block;
  font-size: 0.8rem;
  color: var(--b1ng-muted);
  margin-bottom: 0.75rem;
}

/* --- Zones d'annonce --- */
.b1ng-form__live {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; margin: -1px;
}
.b1ng-form__global-error {
  margin: 0 0 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  background: #fdecea;
  color: var(--b1ng-erreur);
  font-size: 0.92rem;
  border-left: 3px solid var(--b1ng-erreur);
}

/* --- Étapes --- */
.b1ng-form__step[hidden] { display: none; }
.b1ng-form__step-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--b1ng-bleu);
  outline: none;
}
.b1ng-form__step-title:focus-visible { box-shadow: 0 0 0 3px rgba(232, 121, 43, 0.35); border-radius: 4px; }

/* --- Groupes radio --- */
.b1ng-form__fieldset {
  border: 0; padding: 0; margin: 0 0 1rem; min-width: 0;
}
.b1ng-form__legend {
  padding: 0; margin-bottom: 0.4rem;
  font-weight: 600; font-size: 0.95rem;
}
.b1ng-form__choices { display: grid; gap: 0.5rem; grid-template-columns: 1fr; }
.b1ng-form__fieldset--cards .b1ng-form__choices { grid-template-columns: 1fr; }
@media (min-width: 520px) {
  .b1ng-form--inline .b1ng-form__fieldset--cards .b1ng-form__choices { grid-template-columns: 1fr 1fr; }
}
.b1ng-form__choice {
  display: flex; align-items: flex-start; gap: 0.6rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--b1ng-bord);
  border-radius: 8px;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.15s, background 0.15s;
}
.b1ng-form__choice:hover { border-color: var(--b1ng-bleu); }
.b1ng-form__choice:has(input:checked) { border-color: var(--b1ng-orange); background: #fff7f1; }
.b1ng-form__choice:has(input:focus-visible) { box-shadow: 0 0 0 3px rgba(20, 52, 92, 0.25); }
.b1ng-form__radio { margin: 0.2rem 0 0; flex: 0 0 auto; accent-color: var(--b1ng-orange); width: 1.1rem; height: 1.1rem; }
.b1ng-form__choice-body { display: flex; flex-direction: column; }
.b1ng-form__choice-label { font-weight: 600; }
.b1ng-form__choice-hint { font-size: 0.82rem; color: var(--b1ng-muted); }
.b1ng-form__fieldset.is-invalid .b1ng-form__choice { border-color: var(--b1ng-erreur); }

/* --- Champs texte --- */
.b1ng-form__field { margin: 0 0 1rem; }
.b1ng-form__field--conditional[hidden] { display: none; }
.b1ng-form__row { display: grid; gap: 0 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 480px) { .b1ng-form__row { grid-template-columns: 1fr 1fr; } }
.b1ng-form__label { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.3rem; }
.b1ng-form__req { color: var(--b1ng-orange); }
.b1ng-form__req[hidden] { display: none; } /* astérisque « Société » masqué pour un particulier */
.b1ng-form__help { margin: 0 0 0.35rem; font-size: 0.85rem; color: var(--b1ng-muted); }
.b1ng-form__input {
  display: block; width: 100%;
  padding: 0.7rem 0.8rem;
  font: inherit; font-size: 1rem; /* ≥16px : évite le zoom iOS */
  color: var(--b1ng-texte);
  background: #fff;
  border: 1px solid var(--b1ng-bord);
  border-radius: 8px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.b1ng-form__input:focus { outline: none; border-color: var(--b1ng-bleu); box-shadow: 0 0 0 3px rgba(20, 52, 92, 0.18); }
.b1ng-form__input.is-invalid { border-color: var(--b1ng-erreur); }
.b1ng-form__textarea { resize: vertical; min-height: 6rem; }
.b1ng-form__counter { margin: 0.25rem 0 0; font-size: 0.82rem; color: var(--b1ng-muted); }
.b1ng-form__counter--ok { color: var(--b1ng-ok); }
.b1ng-form__error { margin: 0.3rem 0 0; font-size: 0.85rem; color: var(--b1ng-erreur); }
.b1ng-form__error[hidden] { display: none; }

/* --- Cases à cocher --- */
.b1ng-form__field--check { margin-bottom: 0.75rem; }
.b1ng-form__check-label {
  display: flex; align-items: flex-start; gap: 0.6rem;
  font-size: 0.9rem; line-height: 1.4; cursor: pointer;
}
.b1ng-form__checkbox { flex: 0 0 auto; margin: 0.2rem 0 0; width: 1.1rem; height: 1.1rem; accent-color: var(--b1ng-orange); }
.b1ng-form__checkbox.is-invalid { outline: 2px solid var(--b1ng-erreur); outline-offset: 1px; }
.b1ng-form__privacy { margin: 0.5rem 0 0; font-size: 0.8rem; color: var(--b1ng-muted); }
.b1ng-form__privacy a { color: var(--b1ng-bleu); }

/* --- Honeypot : invisible pour les humains, présent dans le DOM pour les robots --- */
.b1ng-form__hp {
  position: absolute !important;
  left: -10000px !important;
  top: auto; width: 1px; height: 1px; overflow: hidden;
}

/* --- Navigation --- */
.b1ng-form__nav { display: flex; gap: 0.6rem; justify-content: space-between; align-items: center; margin-top: 0.5rem; }
.b1ng-form__nav[hidden] { display: none; }
.b1ng-form__btn {
  font: inherit; font-weight: 700; font-size: 1rem;
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 48px;
  transition: background 0.15s, transform 0.1s;
}
.b1ng-form__btn[hidden] { display: none; }
.b1ng-form__btn:disabled { opacity: 0.65; cursor: wait; }
.b1ng-form__btn--primary { background: var(--b1ng-orange); color: #fff; flex: 1 1 auto; }
.b1ng-form__btn--primary:hover:not(:disabled) { background: var(--b1ng-orange-fonce); }
.b1ng-form__btn--primary:active:not(:disabled) { transform: translateY(1px); }
.b1ng-form__btn--ghost { background: transparent; color: var(--b1ng-bleu); border-color: var(--b1ng-bord); }
.b1ng-form__btn--ghost:hover:not(:disabled) { background: var(--b1ng-bleu-clair); }
.b1ng-form__btn:focus-visible { outline: 3px solid rgba(20, 52, 92, 0.35); outline-offset: 2px; }

/* --- Succès --- */
.b1ng-form__success { padding: 0.5rem 0; outline: none; }
.b1ng-form__success[hidden] { display: none; }
.b1ng-form__success-title { font-weight: 700; color: var(--b1ng-ok); font-size: 1.1rem; margin: 0 0 0.5rem; }
.b1ng-form__success-ref { font-size: 0.85rem; color: var(--b1ng-muted); }

/* --- Mode VUD (conservé par symétrie, inutilisé sur prix-etancheite.fr) --- */
.b1ng-form__vud { min-height: 200px; }
.b1ng-form__vud iframe { max-width: 100%; }

/* --- Sidebar : version compacte --- */
.b1ng-form--sidebar .b1ng-form__title { font-size: 1.1rem; }
.b1ng-form--sidebar .b1ng-form__choice { padding: 0.5rem 0.65rem; }
.b1ng-form--sidebar .b1ng-form__choice-hint { display: none; }

@media (prefers-reduced-motion: reduce) {
  .b1ng-form__progress-fill, .b1ng-form__btn, .b1ng-form__choice, .b1ng-form__input { transition: none; }
}