/* ================================================================
   SIMULATEUR D'ESTIMATION IMMOBILIÈRE
   style.css — Charles Harry, Agent Immobilier Lieusaint
   Style sobre, professionnel, responsive (mobile-first)
================================================================ */

/* ── Variables de couleur et typographie ── */
:root {
  --couleur-primaire:   #006064;   /* bleu-vert lagon — header / titres */
  --couleur-accent:     #2e7d32;   /* vert — action / validation */
  --couleur-erreur:     #c62828;   /* rouge — erreurs */
  --couleur-texte:      #212121;
  --couleur-texte-pale: #555555;
  --couleur-fond:       #e0f7fa;   /* fond page lagon clair */
  --couleur-blanc:      #ffffff;
  --couleur-bordure:    #b2dfdb;
  --couleur-bordure-focus: #006064;
  --rayon:              6px;
  --ombre:              0 2px 8px rgba(0,0,0,.10);
  --police:             'Segoe UI', Arial, sans-serif;
  --taille-base:        16px;
}

/* ── Reset minimal ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--taille-base); scroll-behavior: smooth; }
body {
  font-family: var(--police);
  background-color: var(--couleur-fond);
  color: var(--couleur-texte);
  line-height: 1.6;
}
a { color: var(--couleur-primaire); }
a:hover { text-decoration: underline; }

/* ── En-tête ── */
.header {
  background-color: var(--couleur-primaire);
  color: var(--couleur-blanc);
  padding: 1.2rem 1rem;
}
.header__inner { max-width: 720px; margin: 0 auto; }
.header__logo { font-size: 1.1rem; font-weight: 700; letter-spacing: .02em; }
.header__tagline { font-size: .9rem; opacity: .85; margin-top: .2rem; }

/* ── Zone principale ── */
.main { padding: 2rem 1rem 3rem; }

/* ── Section formulaire ── */
.form-section {
  max-width: 620px;
  margin: 0 auto;
  background: var(--couleur-blanc);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
  padding: 2rem 2rem 2.5rem;
}
.form-section__title {
  font-size: 1.4rem;
  color: var(--couleur-primaire);
  margin-bottom: .5rem;
}
.form-section__subtitle {
  font-size: .92rem;
  color: var(--couleur-texte-pale);
  margin-bottom: 1.8rem;
  line-height: 1.5;
}

/* ── Fieldset / Legend ── */
.form__fieldset {
  border: none;
  padding: 0;
  margin: 0 0 1.6rem;
}
.form__legend {
  font-size: 1rem;
  font-weight: 700;
  color: var(--couleur-primaire);
  margin-bottom: 1rem;
  padding-bottom: .35rem;
  border-bottom: 2px solid var(--couleur-primaire);
  width: 100%;
}

/* ── Groupe de champ ── */
.form__group {
  margin-bottom: 1.1rem;
}
.form__group--inline {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.form__group--rgpd {
  background: #f0f4f8;
  border-left: 3px solid var(--couleur-primaire);
  padding: .8rem 1rem;
  border-radius: 0 var(--rayon) var(--rayon) 0;
}

/* ── Label ── */
.form__label {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .35rem;
  color: var(--couleur-texte);
}
.form__label--checkbox {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-weight: 400;
  cursor: pointer;
  font-size: .9rem;
}

/* ── Champs texte / nombre / email / tel ── */
.form__input {
  width: 100%;
  padding: .55rem .75rem;
  border: 1px solid var(--couleur-bordure);
  border-radius: var(--rayon);
  font-size: .95rem;
  font-family: var(--police);
  color: var(--couleur-texte);
  background: var(--couleur-blanc);
  transition: border-color .15s;
}
.form__input:focus {
  outline: none;
  border-color: var(--couleur-bordure-focus);
  box-shadow: 0 0 0 3px rgba(26,60,94,.15);
}
.form__input--short { max-width: 140px; }
/* Supprime les flèches sur les <input type="number"> */
.form__input[type="number"]::-webkit-inner-spin-button,
.form__input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.form__input[type="number"] { -moz-appearance: textfield; }

/* ── Select ── */
.form__select {
  width: 100%;
  padding: .55rem .75rem;
  border: 1px solid var(--couleur-bordure);
  border-radius: var(--rayon);
  font-size: .95rem;
  font-family: var(--police);
  color: var(--couleur-texte);
  background: var(--couleur-blanc);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231a3c5e' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  padding-right: 2rem;
  transition: border-color .15s;
}
.form__select:focus {
  outline: none;
  border-color: var(--couleur-bordure-focus);
  box-shadow: 0 0 0 3px rgba(26,60,94,.15);
}
.form__select--short { max-width: 200px; }

/* ── Radio ── */
.form__radio-group { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.form__radio-label {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .9rem;
  cursor: pointer;
}

/* ── Checkbox RGPD ── */
.form__checkbox {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--couleur-primaire);
  margin-top: .1rem;
}

/* ── Indicateurs ── */
.form__required { color: var(--couleur-erreur); margin-left: .1rem; }
.form__optional { font-size: .8rem; font-weight: 400; color: var(--couleur-texte-pale); }
.form__hint { font-size: .78rem; color: var(--couleur-texte-pale); margin-top: .25rem; display: block; }

/* ── Messages d'erreur inline ── */
.form__error {
  display: block;
  font-size: .82rem;
  color: var(--couleur-erreur);
  margin-top: .25rem;
  min-height: 1rem;
}

/* ── Erreur globale ── */
.form__global-error {
  background: #ffebee;
  border: 1px solid var(--couleur-erreur);
  border-radius: var(--rayon);
  color: var(--couleur-erreur);
  padding: .75rem 1rem;
  margin-bottom: 1rem;
  font-size: .9rem;
}

/* ── État invalide (ajouté par JS) ── */
.form__input.is-invalid,
.form__select.is-invalid { border-color: var(--couleur-erreur); }

/* ── Actions ── */
.form__actions { margin-top: 1.5rem; text-align: center; }

/* ── Bouton principal ── */
.btn { display: inline-block; border: none; cursor: pointer; font-family: var(--police); border-radius: var(--rayon); font-weight: 600; transition: background .15s, transform .1s; }
.btn--primary {
  background-color: var(--couleur-accent);
  color: var(--couleur-blanc);
  font-size: 1rem;
  padding: .75rem 2rem;
  width: 100%;
  max-width: 360px;
  letter-spacing: .01em;
}
.btn--primary:hover { background-color: #1b5e20; }
.btn--primary:active { transform: scale(.98); }
.btn--primary:disabled { background-color: #9e9e9e; cursor: not-allowed; }

/* ── Message de succès ── */
.form__success {
  background: #e8f5e9;
  border: 1px solid #66bb6a;
  border-radius: var(--rayon);
  padding: 1.5rem 1.5rem 1.8rem;
  margin-top: 1.2rem;
  text-align: center;
  font-size: .95rem;
  color: #2e7d32;
  line-height: 1.6;
}
.form__success-merci {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: .6rem;
  color: #004d40;
}
.form__success-marche {
  font-size: .97rem;
  color: #00695c;
  background: #e0f2f1;
  border-left: 3px solid #00897b;
  padding: .5rem .8rem;
  border-radius: 0 var(--rayon) var(--rayon) 0;
  margin-bottom: .9rem;
}
.form__success-info {
  margin-bottom: 1.4rem;
  font-size: .93rem;
  color: #2e7d32;
  line-height: 1.55;
}
.form__success-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
}
@keyframes heartbeat {
  0%   { transform: scale(1); box-shadow: 0 2px 8px rgba(0,0,0,.15); }
  14%  { transform: scale(1.04); box-shadow: 0 4px 14px rgba(230,81,0,.35); }
  28%  { transform: scale(1); box-shadow: 0 2px 8px rgba(0,0,0,.15); }
  42%  { transform: scale(1.03); box-shadow: 0 4px 12px rgba(230,81,0,.25); }
  70%  { transform: scale(1); box-shadow: 0 2px 8px rgba(0,0,0,.15); }
  100% { transform: scale(1); box-shadow: 0 2px 8px rgba(0,0,0,.15); }
}
.btn--cta-calendly {
  display: inline-block;
  background-color: #e65100;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: .85rem 2rem;
  border-radius: var(--rayon);
  text-decoration: none;
  letter-spacing: .01em;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
  animation: heartbeat 2.4s ease-in-out infinite;
}
.btn--cta-calendly:hover  { background-color: #bf360c; animation: none; transform: scale(1.02); }
.btn--cta-calendly:active { transform: scale(.98); }
.form__success-cta-sub {
  font-size: .84rem;
  color: #555;
  margin: 0;
  font-style: italic;
}

/* ── Pied de page ── */
.footer {
  text-align: center;
  padding: 1.2rem 1rem;
  font-size: .82rem;
  color: var(--couleur-texte-pale);
  border-top: 1px solid var(--couleur-bordure);
}
.footer a { color: var(--couleur-texte-pale); }

/* ── Grille de cases à cocher (commodités, chauffage) ── */
.form__checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .45rem .8rem;
  margin-top: .35rem;
}
.form__checkbox-item {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .9rem;
  cursor: pointer;
  padding: .3rem .5rem;
  border-radius: var(--rayon);
  transition: background .1s;
}
.form__checkbox-item:hover { background: #f0f4f8; }
.form__checkbox-item input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  accent-color: var(--couleur-primaire);
  cursor: pointer;
}

/* ── Responsive tablette / desktop ── */
@media (min-width: 480px) {
  .form-section { padding: 2.5rem 2.5rem 3rem; }
  .form-section__title { font-size: 1.6rem; }
}
@media (min-width: 768px) {
  .main { padding: 3rem 1rem 4rem; }
}