:root {
  --fond: #f6f8f7;
  --surface: #ffffff;
  --texte: #14262b;
  --texte-doux: #56676d;
  --bordure: #dce5e2;
  --principal: #0b6b63;
  --principal-fonce: #08524c;
  --principal-clair: #e3f3ef;
  --accent: #ffb547;
  --nuit: #0e3236;
  --erreur: #b3261e;
  --succes: #1e7b34;
  --alerte: #8a5a00;
  --rayon: 14px;
  --ombre: 0 1px 2px rgba(14, 50, 54, 0.06), 0 12px 32px rgba(14, 50, 54, 0.08);
  --ombre-forte: 0 2px 4px rgba(14, 50, 54, 0.06), 0 24px 48px rgba(14, 50, 54, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.conteneur { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.conteneur-etroit { max-width: 820px; }

.icone { width: 22px; height: 22px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.bandeau-demo {
  background: #fff4d6;
  color: #6b4d00;
  text-align: center;
  font-size: 14px;
  padding: 6px 16px;
}

/* En-tête */
.entete {
  position: sticky; top: 0; z-index: 5;
  background: #fff;
  border-bottom: 1px solid var(--bordure);
}
.entete-contenu { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.marque { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.marque-icone {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: var(--principal); color: #fff;
}
.marque-icone svg { width: 22px; height: 22px; fill: #fff; stroke: none; }
.logo { font-weight: 800; font-size: 18px; letter-spacing: -0.01em; color: var(--nuit); text-decoration: none; }
.entete-liens { display: flex; align-items: center; gap: 24px; font-size: 15px; }
.entete-liens a:not(.bouton) { color: var(--texte-doux); text-decoration: none; font-weight: 500; }
.entete-liens a:not(.bouton):hover { color: var(--principal); }

/* Boutons */
.bouton {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 700; border: none; border-radius: 10px; padding: 13px 22px; cursor: pointer;
  background: var(--principal); color: #fff; text-decoration: none;
  box-shadow: 0 1px 2px rgba(8, 82, 76, 0.2);
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
}
.bouton:hover { background: var(--principal-fonce); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(8, 82, 76, 0.25); }
.bouton.secondaire { background: var(--surface); color: var(--texte); border: 1px solid var(--bordure); box-shadow: none; }
.bouton.secondaire:hover { background: var(--fond); transform: none; box-shadow: none; }
.bouton-petit { padding: 9px 16px; font-size: 14px; }
.bouton-clair { background: #fff; color: var(--principal-fonce); }
.bouton-clair:hover { background: var(--principal-clair); }
.bouton:disabled { opacity: 0.6; cursor: wait; transform: none; }

/* Haut de page */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(11, 107, 99, 0.16), transparent 70%),
    radial-gradient(600px 360px at -10% 30%, rgba(255, 181, 71, 0.16), transparent 70%),
    linear-gradient(180deg, #eaf5f1 0%, var(--fond) 100%);
  padding: 48px 0 56px;
}
.hero-grille { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 580px); gap: 48px; align-items: start; }
.hero-texte { padding-top: 24px; }
.surtitre {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px;
  background: var(--surface); border: 1px solid var(--bordure); border-radius: 999px; padding: 6px 14px;
  color: var(--principal-fonce); font-size: 14px; font-weight: 600;
}
.surtitre .icone { width: 18px; height: 18px; }
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.08; letter-spacing: -0.025em; margin: 0 0 18px; color: var(--nuit); }
.surligne { background: linear-gradient(transparent 60%, rgba(255, 181, 71, 0.6) 60%); padding: 0 4px; white-space: nowrap; }
.chapo { font-size: 18px; color: var(--texte-doux); margin: 0 0 26px; max-width: 540px; }
.atouts { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 20px; max-width: 540px; }
.atouts li { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; }
.atouts .icone { width: 26px; height: 26px; padding: 4px; border-radius: 50%; background: var(--principal); color: #fff; stroke-width: 2.6; }

/* Carte du devis */
.carte {
  background: var(--surface); border-radius: 20px; box-shadow: var(--ombre-forte);
  padding: 28px; border: 1px solid rgba(220, 229, 226, 0.7);
  scroll-margin-top: 84px;
}
.carte-rassurance {
  display: flex; align-items: center; gap: 10px; margin: 22px 0 0; padding-top: 16px;
  border-top: 1px solid var(--bordure); color: var(--texte-doux); font-size: 13px;
}
.carte-rassurance .icone { color: var(--principal); width: 20px; height: 20px; }

.progression { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; list-style: none; padding: 0; margin: 0 0 24px; counter-reset: etape; }
.progression li {
  counter-increment: etape; font-size: 13px; font-weight: 600; color: var(--texte-doux);
  padding-top: 10px; position: relative; white-space: nowrap;
}
.progression li::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 5px; border-radius: 999px; background: var(--bordure); }
.progression li::before { content: counter(etape) ". "; }
.progression li.active, .progression li.faite { color: var(--texte); }
.progression li.active::after, .progression li.faite::after { background: var(--principal); }

h2 { font-size: 22px; line-height: 1.25; margin: 0 0 16px; letter-spacing: -0.01em; }
h3 { font-size: 18px; margin: 0 0 12px; }
.sous-titre { color: var(--texte-doux); margin: -8px 0 16px; }

.etape:not([hidden]) { animation: apparition 0.25s ease-out; }
@keyframes apparition { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.choix-prestations { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.choix {
  display: flex; flex-direction: column; gap: 4px; text-align: left;
  background: var(--surface); border: 2px solid var(--bordure); border-radius: var(--rayon);
  padding: 16px; cursor: pointer; font: inherit; color: inherit;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.choix:hover, .choix:focus-visible { border-color: var(--principal); outline: none; transform: translateY(-2px); box-shadow: var(--ombre); }
.choix-icone {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; margin-bottom: 8px;
  background: var(--principal-clair); color: var(--principal);
}
.choix-icone svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.choix-titre { font-weight: 700; }
.choix-texte { color: var(--texte-doux); font-size: 14px; line-height: 1.4; }

.encart {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--principal-clair); border-radius: 12px; padding: 14px 16px; margin: 0 0 20px;
  color: var(--principal-fonce); font-size: 14px;
}
.encart p { margin: 0; }
.encart .icone { margin-top: 1px; }

/* Champs */
.champs { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 16px; }
.champ { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 600; }
.champ-large { grid-column: 1 / -1; }
.champ input, .champ select, .champ textarea {
  font: inherit; font-size: 16px; font-weight: 400; color: inherit;
  border: 1px solid #cfd9d6; border-radius: 10px; padding: 12px 14px; background: var(--surface);
  width: 100%; transition: border-color 0.15s, box-shadow 0.15s;
}
.champ input:focus, .champ select:focus, .champ textarea:focus { outline: none; border-color: var(--principal); box-shadow: 0 0 0 4px rgba(11, 107, 99, 0.15); }
.champ input[aria-invalid="true"] { border-color: var(--erreur); box-shadow: 0 0 0 4px rgba(179, 38, 30, 0.1); }

.case { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }
.case input { margin-top: 3px; width: 18px; height: 18px; flex: none; accent-color: var(--principal); }
.groupe-radio { display: flex; gap: 10px; flex-wrap: wrap; font-weight: 400; }
.groupe-radio label {
  display: flex; gap: 8px; align-items: center; cursor: pointer;
  border: 1px solid #cfd9d6; border-radius: 10px; padding: 9px 16px;
}
.groupe-radio label:has(input:checked) { border-color: var(--principal); background: var(--principal-clair); }
.groupe-radio input { accent-color: var(--principal); }

.depot {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  border: 2px dashed #c6d3cf; border-radius: var(--rayon);
  padding: 18px; text-align: left; color: var(--texte-doux); font-weight: 500; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.depot .icone { width: 30px; height: 30px; color: var(--principal); }
.depot small { font-weight: 400; }
.depot:hover, .depot.survol { border-color: var(--principal); background: var(--principal-clair); }
.depot input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.liste-fichiers { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-direction: column; gap: 6px; }
.liste-fichiers li { display: flex; justify-content: space-between; gap: 8px; background: var(--fond); border-radius: 8px; padding: 6px 10px; font-weight: 400; }
.liste-fichiers button { background: none; border: none; color: var(--erreur); cursor: pointer; font: inherit; }

.aide { color: var(--texte-doux); font-weight: 400; font-size: 13px; }
.aide.alerte { color: var(--alerte); }
.erreur { color: var(--erreur); font-size: 14px; margin: 0; min-height: 0; }

.actions { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

/* Estimation */
.estimation-tete {
  background: linear-gradient(135deg, var(--principal) 0%, var(--principal-fonce) 100%);
  color: #fff; border-radius: var(--rayon); padding: 22px; margin-bottom: 20px;
}
.estimation-tete .libelle { color: rgba(255, 255, 255, 0.85); font-weight: 600; margin: 0 0 4px; }
.estimation-tete .montant { font-size: clamp(28px, 5vw, 40px); font-weight: 800; margin: 0; line-height: 1.2; letter-spacing: -0.02em; }
.estimation-tete .unite { color: rgba(255, 255, 255, 0.85); margin: 4px 0 0; }
.estimation-tete .credit { margin: 10px 0 0; font-weight: 700; color: var(--accent); }

.detail { width: 100%; border-collapse: collapse; margin-bottom: 16px; font-size: 15px; }
.detail td { padding: 10px 0; border-bottom: 1px solid var(--bordure); }
.detail td:last-child { text-align: right; white-space: nowrap; padding-left: 12px; font-weight: 600; }

.notes { padding-left: 20px; color: var(--texte-doux); font-size: 14px; margin: 0 0 20px; }
.notes li { margin-bottom: 6px; }
.notes .important { color: var(--alerte); }

.visite { border-top: 1px solid var(--bordure); padding-top: 20px; }
.confirmation { color: var(--succes); font-weight: 600; margin: 12px 0 0; }

.apercu-fiche { margin: 32px auto; }
.apercu-fiche h2 { font-size: 16px; color: var(--texte-doux); }
.apercu-fiche pre { background: #1c2a33; color: #e6eef2; border-radius: var(--rayon); padding: 16px; overflow-x: auto; font-size: 13px; }

/* Engagements */
.confiance { background: var(--surface); border-top: 1px solid var(--bordure); border-bottom: 1px solid var(--bordure); }
.confiance-grille { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; padding-top: 22px; padding-bottom: 22px; }
.confiance-item { display: flex; align-items: center; gap: 12px; }
.confiance-item .icone { width: 40px; height: 40px; padding: 9px; border-radius: 12px; background: var(--principal-clair); color: var(--principal); }
.confiance-item strong { display: block; font-size: 15px; }
.confiance-item span { display: block; color: var(--texte-doux); font-size: 13px; }

/* Sections */
.section { padding: 72px 0; }
.section-claire { background: var(--surface); }
.section-surtitre { margin: 0 0 8px; color: var(--principal); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; }
.section-titre { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 32px; color: var(--nuit); max-width: 640px; }
.section-texte { color: var(--texte-doux); font-size: 17px; margin: -16px 0 24px; max-width: 520px; }

.etapes-grille { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: none; }
.etapes-grille li { background: var(--surface); border: 1px solid var(--bordure); border-radius: 18px; padding: 26px; position: relative; }
.etapes-grille h3 { margin: 16px 0 8px; }
.etapes-grille p { margin: 0; color: var(--texte-doux); }
.numero {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: var(--principal); color: #fff; font-weight: 800; font-size: 18px;
}

.prestations-grille { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.prestation {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  border: 1px solid var(--bordure); border-radius: 18px; padding: 22px; background: var(--fond);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s, background 0.15s;
}
.prestation:hover { transform: translateY(-3px); box-shadow: var(--ombre); border-color: var(--principal); background: var(--surface); }
.prestation h3 { margin: 4px 0 8px; font-size: 17px; }
.prestation p { margin: 0 0 16px; color: var(--texte-doux); font-size: 15px; flex: 1; }
.lien-fleche { color: var(--principal); font-weight: 700; font-size: 15px; }
.lien-fleche::after { content: " →"; transition: margin 0.15s; }
.prestation:hover .lien-fleche::after { margin-left: 4px; }

.atouts-grille { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 56px; align-items: center; }
.avantages { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.avantages li { background: var(--surface); border: 1px solid var(--bordure); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.avantages .icone { width: 42px; height: 42px; padding: 9px; border-radius: 12px; background: var(--principal-clair); color: var(--principal); }
.avantages h3 { font-size: 16px; margin: 0 0 4px; }
.avantages p { margin: 0; color: var(--texte-doux); font-size: 14px; }

.villes { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.villes li {
  display: flex; flex-direction: column; gap: 2px; padding: 16px 18px 16px 48px; position: relative;
  border: 1px solid var(--bordure); border-radius: 14px; background: var(--fond);
}
.villes li::before {
  content: ""; position: absolute; left: 18px; top: 50%; width: 14px; height: 14px; margin-top: -7px;
  border-radius: 50%; background: var(--principal); box-shadow: 0 0 0 5px var(--principal-clair);
}
.villes span { color: var(--texte-doux); font-size: 14px; }

.faq { display: flex; flex-direction: column; gap: 10px; }
.faq details { background: var(--surface); border: 1px solid var(--bordure); border-radius: 14px; padding: 0 20px; }
.faq details[open] { box-shadow: var(--ombre); }
.faq summary {
  cursor: pointer; list-style: none; font-weight: 700; padding: 18px 32px 18px 0; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  font-size: 24px; font-weight: 400; color: var(--principal); line-height: 1;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 18px; color: var(--texte-doux); }
.faq a { color: var(--principal); }

.cta-final { background: var(--nuit); color: #fff; padding: 56px 0; }
.cta-contenu { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-final h2 { font-size: clamp(24px, 3vw, 32px); margin: 0 0 6px; letter-spacing: -0.02em; }
.cta-final p { margin: 0; color: rgba(255, 255, 255, 0.75); font-size: 17px; }

/* Pied de page */
.pied { background: #0a2629; color: rgba(255, 255, 255, 0.7); padding: 24px 0; font-size: 14px; }
.pied-contenu { display: flex; justify-content: space-between; align-items: center; gap: 12px 24px; flex-wrap: wrap; }
.pied nav { display: flex; gap: 20px; flex-wrap: wrap; }
.pied a { color: rgba(255, 255, 255, 0.85); }
.case a, .bandeau-cookies a { color: var(--principal); }

/* Champ piège anti-robots : invisible pour les visiteurs */
.piege { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.bandeau-cookies {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 10;
  max-width: 640px; margin: 0 auto; padding: 14px 16px;
  display: flex; align-items: center; gap: 16px;
  background: var(--surface); border: 1px solid var(--bordure); border-radius: var(--rayon); box-shadow: var(--ombre-forte);
  font-size: 13px;
}
.bandeau-cookies[hidden] { display: none; }
.bandeau-cookies p { margin: 0; flex: 1; }
.bandeau-cookies .actions { margin: 0; flex-wrap: nowrap; }
.bandeau-cookies .bouton { padding: 9px 16px; font-size: 14px; }

/* Pages de texte (mentions légales, confidentialité, fonctionnement) */
.texte { max-width: 760px; padding: 40px 16px 56px; }
.texte h1 { font-size: clamp(26px, 4vw, 36px); margin: 0 0 16px; letter-spacing: -0.02em; color: var(--nuit); }
.texte h2 { font-size: 19px; margin: 28px 0 8px; }
.texte p, .texte li { color: var(--texte); }
.texte a { color: var(--principal); }

@media (max-width: 980px) {
  .hero { padding: 28px 0 40px; }
  .hero-grille { grid-template-columns: 1fr; gap: 28px; }
  .hero-texte { padding-top: 0; }
  .carte { max-width: 640px; }
  .confiance-grille { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .etapes-grille { grid-template-columns: 1fr; }
  .prestations-grille { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .atouts-grille { grid-template-columns: 1fr; gap: 32px; }
  .villes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .entete-liens a:not(.bouton) { display: none; }
  .section { padding: 52px 0; }
}

@media (max-width: 560px) {
  .entete-contenu { min-height: 56px; flex-wrap: nowrap; gap: 10px; }
  .marque { gap: 8px; min-width: 0; }
  .marque-icone { width: 30px; height: 30px; flex: none; }
  .marque-icone svg { width: 19px; height: 19px; }
  .logo { font-size: 16px; white-space: nowrap; }
  .entete-liens .bouton-petit { padding: 8px 12px; font-size: 13px; white-space: nowrap; }
  .hero { padding: 20px 0 32px; }
  .surtitre, .chapo { display: none; }
  .hero h1 { font-size: 30px; margin-bottom: 16px; }
  .atouts { gap: 10px 12px; }
  .atouts li { font-size: 13px; gap: 8px; }
  .atouts .icone { width: 22px; height: 22px; }
  .carte { padding: 18px; border-radius: 16px; }
  .carte h2 { font-size: 19px; }
  .choix-prestations { grid-template-columns: 1fr 1fr; gap: 10px; }
  .choix { padding: 12px; }
  .choix-icone { width: 38px; height: 38px; margin-bottom: 4px; }
  .choix-texte { font-size: 13px; }
  .progression li { font-size: 0; }
  .progression li::before { font-size: 12px; content: counter(etape); }
  .progression li.active { font-size: 12px; }
  .progression li.active::before { content: "Étape " counter(etape) " · "; }
  .actions .bouton { flex: 1; }
  .confiance-grille { grid-template-columns: 1fr; gap: 14px; }
  .prestations-grille, .avantages, .villes { grid-template-columns: 1fr; }
  .cta-contenu .bouton { width: 100%; }
  .bandeau-cookies { flex-direction: column; align-items: stretch; gap: 10px; left: 10px; right: 10px; bottom: 10px; }
  .bandeau-cookies .actions .bouton { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media print {
  .bandeau-demo, .entete, .hero-texte, .progression, .visite, .apercu-fiche, .pied, .bandeau-cookies,
  .confiance, .section, .cta-final, .carte-rassurance { display: none !important; }
  body { background: #fff; }
  .hero { background: none; padding: 0; }
  .hero-grille { display: block; }
  .carte { box-shadow: none; padding: 0; border: none; }
  .estimation-tete { color: #000; background: none; border: 1px solid #ccc; }
  .estimation-tete .libelle, .estimation-tete .unite, .estimation-tete .credit { color: #000; }
}