/* =========================================================================
   Module calculateur — tous les styles sont portés par .rain-calculator
   et n'utilisent que les variables globales du site.
   ========================================================================= */
.rain-calculator {
  --rc-bord: var(--ligne);
  background: #fff;
  border: 1px solid var(--rc-bord);
  border-radius: var(--rayon);
  padding: clamp(1.2rem, 3.5vw, 2.4rem);
  font-family: var(--texte);
}
.rain-calculator h2 { font-size: clamp(1.25rem, 1.1rem + .7vw, 1.6rem); text-transform: none;
  letter-spacing: 0; }
.rain-calculator h3 { margin-top: 2.2rem; }
.rain-calculator legend { padding: 0; width: 100%; }
.rain-calculator fieldset { border: 0; margin: 0; padding: 0; }
.rain-calculator .aide { display: block; font-size: .88rem; color: var(--gris); margin-bottom: 1.2rem; }
.rc-attente { color: var(--gris); }

/* -------------------------------------------------------- progression */
.rc-progression { display: flex; flex-wrap: wrap; gap: .4rem 1.6rem; list-style: none; margin: 0 0 2rem;
  padding: 0 0 1.1rem; border-bottom: 1px solid var(--rc-bord); font-size: .9rem; color: var(--gris); }
.rc-progression li { display: flex; align-items: center; gap: .5rem; }
.rc-progression span { display: grid; place-items: center; width: 1.6rem; height: 1.6rem;
  border-radius: 50%; border: 2px solid var(--rc-bord); font-size: .8rem; font-weight: 600; }
.rc-progression .is-actif { color: var(--bleu); font-weight: 600; }
.rc-progression .is-actif span { border-color: var(--cyan); background: var(--cyan-pale); color: var(--bleu); }
.rc-progression .is-fait span { background: var(--cyan); border-color: var(--cyan); color: #fff; }

/* ------------------------------------------------------------- champs */
.rain-calculator .rc-label { font-weight: 600; font-size: .94rem; }
.rc-choix { display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.rc-option { position: relative; display: flex; align-items: center; gap: .65rem; padding: .85rem 1rem;
  border: 1px solid #c3d2de; border-radius: var(--rayon); cursor: pointer; font-size: .96rem; }
.rc-option:hover { border-color: var(--cyan); }
.rc-option input { accent-color: var(--bleu); width: 1.05rem; height: 1.05rem; }
.rc-option:has(input:checked) { border-color: var(--bleu); background: var(--cyan-pale);
  box-shadow: inset 0 0 0 1px var(--bleu); }
.rc-option:has(input:focus-visible) { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* ------------------------------------------------------- type de projet */
.rc-projets { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }
.rc-projet { position: relative; display: flex; flex-direction: column; gap: .45rem;
  padding: 1.4rem 3.4rem 1.5rem 1.4rem; border: 1px solid #c3d2de; border-radius: var(--rayon);
  cursor: pointer; background: #fff; transition: border-color var(--transition), background var(--transition); }
.rc-projet:hover { border-color: var(--cyan); }
.rc-projet input { position: absolute; opacity: 0; width: 0; height: 0; }
.rc-projet strong { font-family: var(--titre); font-size: 1.12rem; color: var(--bleu); }
.rc-projet small { font-size: .92rem; color: var(--gris); line-height: 1.5; }
.rc-projet__marque { position: absolute; top: 1.4rem; right: 1.3rem; width: 1.55rem; height: 1.55rem;
  display: grid; place-items: center; border: 2px solid #c3d2de; border-radius: 50%; color: #fff; }
.rc-projet__marque svg { width: .9rem; opacity: 0; transition: opacity var(--transition); }
.rc-projet:has(input:checked) { border-color: var(--bleu); background: var(--cyan-pale);
  box-shadow: inset 0 0 0 1px var(--bleu); }
.rc-projet:has(input:checked) .rc-projet__marque { background: var(--bleu); border-color: var(--bleu); }
.rc-projet:has(input:checked) .rc-projet__marque svg { opacity: 1; }
.rc-projet:has(input:focus-visible) { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* ------------------------------------------------ récapitulatif rétention */
.rc-recap { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  margin: 1.4rem 0 0; padding: 1.3rem 1.4rem; background: var(--cyan-pale);
  border-radius: var(--rayon); }
.rc-recap dt { font-size: .88rem; color: var(--bleu); font-weight: 600; margin-bottom: .2rem; }
.rc-recap dd { margin: 0; font-family: var(--titre); font-size: 1.35rem; }

.rc-usages { display: grid; gap: .7rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.rc-usage { display: flex; align-items: flex-start; gap: .7rem; padding: 1rem; border: 1px solid #c3d2de;
  border-radius: var(--rayon); cursor: pointer; }
.rc-usage:hover { border-color: var(--cyan); }
.rc-usage input { margin-top: .2rem; accent-color: var(--bleu); width: 1.1rem; height: 1.1rem; }
.rc-usage small { display: block; color: var(--gris); font-size: .85rem; line-height: 1.4; }
.rc-usage:has(input:checked) { border-color: var(--bleu); background: var(--cyan-pale); }

.rc-toit { display: grid; gap: 0 1.2rem; align-items: end; margin-bottom: .4rem;
  grid-template-columns: minmax(12rem, 2fr) minmax(8rem, 1fr) auto; }
.rc-retirer { align-self: end; margin-bottom: 1.1rem; padding: .6rem .8rem; background: none;
  border: 1px solid var(--rc-bord); border-radius: var(--rayon); color: var(--gris); cursor: pointer; }
.rc-retirer:hover { border-color: #c8392b; color: #c8392b; }
@media (max-width: 560px) { .rc-toit { grid-template-columns: 1fr; } .rc-retirer { margin-bottom: 1rem; } }

.rc-nav { display: flex; gap: .8rem; justify-content: flex-end; margin-top: 2rem; padding-top: 1.4rem;
  border-top: 1px solid var(--rc-bord); }
.rc-nav .rc-retour { margin-right: auto; }

/* ----------------------------------------------------------- résultats */
.rc-cles { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  margin-bottom: 1.6rem; }
.rc-cle { padding: 1.5rem 1.4rem; border-radius: var(--rayon); }
.rc-cle--cuve { background: var(--cyan-pale); border: 1px solid rgba(87,195,232,.5); }
.rc-cle--couverture { background: var(--bleu-nuit); color: #fff; }
.rc-cle__label { font-size: .9rem; font-weight: 600; margin: 0 0 .5rem; color: var(--bleu); }
.rc-cle--couverture .rc-cle__label { color: var(--cyan); }
.rc-cle__valeur { font-family: var(--titre); font-size: clamp(2.4rem, 1.8rem + 3vw, 3.4rem);
  line-height: 1; margin: 0; color: var(--bleu); }
.rc-cle--couverture .rc-cle__valeur { color: #fff; }
.rc-cle__valeur span { font-size: .34em; margin-left: .3em; letter-spacing: .02em; }
.rc-cle__note { font-size: .84rem; color: var(--gris); margin: .8rem 0 0; }
.rc-cle--couverture .rc-cle__note { color: rgba(255,255,255,.72); }

.rc-jauge { margin-top: 1rem; }
.rc-jauge__fond { position: relative; height: 12px; background: rgba(255,255,255,.18);
  border-radius: 999px; overflow: hidden; }
.rc-jauge__plein { height: 100%; background: var(--cyan); border-radius: 999px;
  transition: width 700ms cubic-bezier(.2,.7,.3,1); }
.rc-jauge__cible { position: absolute; top: -4px; width: 2px; height: 20px; background: #fff;
  opacity: .85; }

.rc-definition { font-size: .95rem; color: var(--gris); border-left: 3px solid var(--cyan);
  padding-left: 1rem; }

.rc-bilan { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  margin: 1.8rem 0; padding: 1.2rem 0; border-block: 1px solid var(--rc-bord); }
.rc-bilan b { display: block; font-family: var(--titre); font-size: 1.3rem; color: var(--bleu); }
.rc-bilan span { font-size: .85rem; color: var(--gris); line-height: 1.35; display: block; }

.rc-compares { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  list-style: none; margin: 1rem 0; padding: 0; }
.rc-compare { padding: 1.1rem 1.2rem; border: 1px solid var(--rc-bord); border-radius: var(--rayon);
  border-top: 3px solid var(--cyan); }
.rc-compare h4 { margin: 0 0 .4rem; font-size: .88rem; color: var(--bleu); text-transform: none;
  letter-spacing: 0; }
.rc-compare__valeur { font-family: var(--titre); font-size: 1.6rem; margin: 0; }
.rc-compare__ecart { margin: .2rem 0 0; font-size: .88rem; font-weight: 600; }
.rc-compare__ecart.est-hausse { color: #1f7a4d; }
.rc-compare__ecart.est-baisse { color: #c8392b; }

.rc-reglages, .rc-methode { margin-top: 2rem; border: 1px solid var(--rc-bord);
  border-radius: var(--rayon); }
.rc-reglages > summary, .rc-methode > summary { padding: .95rem 1.2rem; font-weight: 600;
  cursor: pointer; font-size: .95rem; }
.rc-reglages[open] > summary, .rc-methode[open] > summary { border-bottom: 1px solid var(--rc-bord); }
.rc-reglages > .form-grille { padding: 1.2rem 1.2rem .2rem; }
.rc-methode { margin-top: 1.6rem; background: var(--fond-doux); border-color: transparent; }
.rc-methode__corps { padding: 1.4rem 1.6rem 1.8rem; display: grid; gap: .4rem 3rem;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); align-items: start; }
.rc-methode__details { padding-left: 1.6rem; border-left: 1px solid var(--ligne); }
.rc-methode__details > *:first-child { margin-top: 0; }
@media (max-width: 900px) {
  .rc-methode__corps { grid-template-columns: 1fr; gap: 1rem; }
  .rc-methode__details { padding-left: 0; border-left: 0; border-top: 1px solid var(--ligne);
    padding-top: 1rem; }
}
.rc-methode__corps ul { padding-left: 1.2rem; }

.rc-mention { margin-top: 2rem; padding: 1.2rem 1.4rem; background: var(--fond-doux);
  border-left: 4px solid var(--bleu); border-radius: 0 var(--rayon) var(--rayon) 0; font-size: .93rem; }
.rc-mention p { margin-bottom: .7rem; }
.rc-note-reserve { border-left: 3px solid var(--cyan); padding-left: .8rem; }

/* ------------------------------------------------------------- contact */
.rc-contact { margin-top: 2.5rem; padding-top: 2rem; border-top: 3px solid var(--cyan); }
.rc-contact h2 { margin-bottom: .5rem; }
.rc-envoi { margin-top: 1.4rem; }
.rc-retour-envoi:empty { display: none; }
.rc-retour-envoi { margin-top: 1rem; }

@media (prefers-reduced-motion: reduce) {
  .rc-jauge__plein { transition: none; }
}