/* Pop'corde — couleurs tirées du logo. Aucune couleur en dur ailleurs. */
:root {
  --bleu: #062659;
  --bleu-fonce: #031a3f;
  --bleu-clair: #e9eef7;
  --rouge: #e21820;
  --rouge-fonce: #b8121a;
  --blanc: #ffffff;
  --gris-fond: #f5f6f8;
  --gris-texte: #4a5568;
  --texte: #14213d;
  --bord: #dde3ec;
  --ombre: 0 6px 24px rgba(6, 38, 89, 0.10);
  --rayon: 10px;
  --largeur: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--texte);
  background: var(--blanc);
  line-height: 1.6;
  font-size: 17px;
}
/* height:auto : sans lui, l'attribut height du HTML (qui évite les sauts de
   mise en page au chargement) fixerait la hauteur et étirerait l'image. */
img { max-width: 100%; height: auto; display: block; }
/* L'attribut hidden doit gagner sur les display des composants (.bouton…). */
[hidden] { display: none !important; }
a { color: var(--bleu); }
h1, h2, h3 { line-height: 1.2; color: var(--bleu); margin: 0 0 .5em; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); }
h3 { font-size: 1.2rem; }
.conteneur { max-width: var(--largeur); margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section--grise { background: var(--gris-fond); }
.surtitre {
  display: inline-block; color: var(--rouge); font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em; font-size: .85rem; margin-bottom: 8px;
}
.intro { max-width: 680px; color: var(--gris-texte); margin: 0 0 40px; }

/* Boutons */
.bouton {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; border-radius: 999px; font-weight: 700; text-decoration: none;
  border: 2px solid transparent; cursor: pointer; font-size: 1rem; font-family: inherit;
  transition: background .15s, transform .15s;
}
.bouton:hover { transform: translateY(-1px); }
.bouton--rouge { background: var(--rouge); color: var(--blanc); }
.bouton--rouge:hover { background: var(--rouge-fonce); }
.bouton--contour { border-color: currentColor; color: var(--blanc); background: transparent; }
.bouton--bleu { background: var(--bleu); color: var(--blanc); }

/* En-tête */
.entete {
  position: sticky; top: 0; z-index: 50; background: var(--blanc);
  border-bottom: 1px solid var(--bord);
}
.entete .conteneur { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.entete__logo img { height: 52px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { text-decoration: none; font-weight: 600; color: var(--bleu); }
.nav a:hover { color: var(--rouge); }
.entete__tel { font-weight: 700; color: var(--bleu); text-decoration: none; white-space: nowrap; }
.entete .bouton { padding: 10px 18px; }

/* Bandeau d'accueil */
.accueil {
  position: relative; color: var(--blanc); min-height: 600px; display: flex; align-items: center;
  background: var(--bleu-fonce) url("images/cordes-leo.webp") center 30% / cover no-repeat;
}
.accueil::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(3, 26, 63, .94) 0%, rgba(3, 26, 63, .80) 45%, rgba(3, 26, 63, .25) 100%);
}
.accueil .conteneur { position: relative; padding-top: 60px; padding-bottom: 60px; }
.accueil h1 { color: var(--blanc); font-size: clamp(2.1rem, 5vw, 3.4rem); max-width: 640px; }
.accueil h1 em { font-style: normal; color: var(--rouge); }
.accueil p { font-size: 1.15rem; max-width: 560px; opacity: .95; }
.accueil__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 36px; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.badges li {
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .25);
  padding: 8px 14px; border-radius: 999px; font-size: .92rem; font-weight: 600;
}

/* Atouts */
.atouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.atout { background: var(--blanc); border-radius: var(--rayon); padding: 24px; box-shadow: var(--ombre); }
.atout__icone {
  width: 46px; height: 46px; border-radius: 50%; background: var(--bleu-clair); color: var(--rouge);
  display: grid; place-items: center; margin-bottom: 14px;
}
.atout p { margin: 0; color: var(--gris-texte); font-size: .97rem; }

/* Cordes : bloc mis en avant */
.cordes { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.cordes__photos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cordes__photos img { border-radius: var(--rayon); height: 100%; object-fit: cover; aspect-ratio: 3/4; }
.liste-coches { list-style: none; padding: 0; margin: 20px 0 28px; }
.liste-coches li { padding-left: 30px; position: relative; margin-bottom: 10px; }
.liste-coches li::before {
  content: "✓"; position: absolute; left: 0; top: .2em; width: 20px; height: 20px; border-radius: 50%;
  background: var(--rouge); color: var(--blanc); font-size: 12px; font-weight: 800;
  display: grid; place-items: center;
}

/* Prestations */
.prestations { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.prestation {
  background: var(--blanc); border: 1px solid var(--bord); border-radius: var(--rayon);
  padding: 28px; border-top: 4px solid var(--bleu);
}
.prestation--vedette { border-top-color: var(--rouge); }
.prestation ul { margin: 12px 0 0; padding-left: 20px; color: var(--gris-texte); }
.prestation li { margin-bottom: 4px; }

/* Réalisations */
.realisations { display: grid; gap: 40px; }
.chantier { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; align-items: start; }
.chantier__texte h3 { margin-top: 8px; }
.chantier__texte p { color: var(--gris-texte); margin: 0; }
.chantier figure { margin: 0; position: relative; }
.chantier figure img { border-radius: var(--rayon); aspect-ratio: 3/4; object-fit: cover; width: 100%; }
.etiquette {
  position: absolute; top: 12px; left: 12px; background: var(--bleu); color: var(--blanc);
  font-weight: 700; font-size: .8rem; padding: 4px 10px; border-radius: 999px; text-transform: uppercase;
}
.etiquette--apres { background: var(--rouge); }

.plus summary {
  cursor: pointer; font-weight: 700; color: var(--bleu); padding: 14px 24px; border: 2px solid var(--bleu);
  border-radius: 999px; display: inline-block; list-style: none;
}
.plus summary::-webkit-details-marker { display: none; }
.plus[open] summary { margin-bottom: 40px; }

/* Avis */
.note { display: flex; align-items: center; gap: 14px; margin-bottom: 32px; flex-wrap: wrap; }
.note__chiffre { font-size: 2.6rem; font-weight: 800; color: var(--bleu); }
.etoiles { color: var(--rouge); font-size: 1.4rem; letter-spacing: 2px; }
.avis-grille { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.avis { background: var(--blanc); border-radius: var(--rayon); padding: 24px; box-shadow: var(--ombre); margin: 0; }
.avis blockquote { margin: 10px 0 14px; color: var(--texte); }
.avis figcaption { font-weight: 700; color: var(--bleu); font-size: .95rem; }
.avis figcaption span { font-weight: 400; color: var(--gris-texte); }
.source { margin-top: 24px; font-size: .9rem; color: var(--gris-texte); }

/* À propos */
.apropos { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: center; }
.apropos img { border-radius: var(--rayon); aspect-ratio: 4/3; object-fit: cover; }
.diplomes { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 20px 0 0; }
.diplomes li {
  background: var(--bleu-clair); color: var(--bleu); padding: 8px 14px; border-radius: 999px;
  font-weight: 700; font-size: .92rem;
}

/* Estimation */
.estimation { background: var(--blanc); border-radius: var(--rayon); box-shadow: var(--ombre); overflow: hidden; }
.estimation__etape { padding: 28px 28px 8px; }
.estimation__etape h3 { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.estimation__num {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--bleu); color: var(--blanc); font-size: .9rem;
}
.estimation__deux { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; }
.tuiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tuile, .pastille { position: relative; cursor: pointer; }
.tuile input, .pastille input { position: absolute; opacity: 0; pointer-events: none; }
.tuile {
  display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border: 2px solid var(--bord);
  border-radius: var(--rayon); background: var(--blanc); transition: border-color .15s, background .15s;
}
.tuile__titre { font-weight: 700; color: var(--bleu); }
.tuile__detail { font-size: .88rem; color: var(--gris-texte); }
.pastilles { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.pastille span {
  display: flex; flex-direction: column; padding: 12px 14px; border: 2px solid var(--bord);
  border-radius: var(--rayon); font-weight: 700; color: var(--bleu); height: 100%;
}
.pastille small { font-weight: 400; color: var(--gris-texte); font-size: .82rem; margin-top: 2px; }
.tuile:hover, .pastille:hover span { border-color: var(--bleu); }
.tuile:has(input:checked), .pastille input:checked + span { border-color: var(--rouge); background: var(--bleu-clair); }
.tuile:has(input:focus-visible), .pastille input:focus-visible + span { outline: 2px solid var(--bleu); outline-offset: 2px; }
.estimation__resultat-bloc { margin-top: 20px; padding: 28px; background: var(--bleu); color: var(--blanc); text-align: center; }
.estimation__etiquette { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; font-weight: 700; opacity: .8; }
.estimation__prix { font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 800; margin: 6px 0; }
.estimation__detail { margin: 0 0 18px; opacity: .9; min-height: 1.4em; }
.estimation__mention { font-size: .82rem; opacity: .75; margin: 18px auto 0; max-width: 620px; }

/* Devis */
.devis { background: var(--bleu); color: var(--blanc); }
.devis h2, .devis .intro { color: var(--blanc); }
.devis .intro { opacity: .9; }
.devis__grille { display: grid; grid-template-columns: 1fr 1.6fr; gap: 48px; align-items: start; }
.devis__contact a { color: var(--blanc); }
.devis__contact p { margin: 0 0 18px; }
.devis__contact strong { display: block; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; opacity: .75; }
.devis__contact .grand { font-size: 1.5rem; font-weight: 800; text-decoration: none; }
.formulaire { background: var(--blanc); color: var(--texte); border-radius: var(--rayon); padding: 32px; }
.champs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.champ { display: flex; flex-direction: column; gap: 6px; }
.champ--large { grid-column: 1 / -1; }
.champ label { font-weight: 600; font-size: .95rem; }
.champ input, .champ select, .champ textarea {
  font: inherit; padding: 12px 14px; border: 1px solid var(--bord); border-radius: 8px; background: var(--blanc);
  color: var(--texte);
}
.champ input:focus, .champ select:focus, .champ textarea:focus { outline: 2px solid var(--bleu); border-color: var(--bleu); }
.champ textarea { min-height: 120px; resize: vertical; }
.case { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; color: var(--gris-texte); }
.case input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.formulaire .bouton { width: 100%; margin-top: 8px; }
.piege { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.obligatoire { color: var(--rouge); }
.message { margin-top: 16px; padding: 14px 16px; border-radius: 8px; display: none; }
.message--ok { display: block; background: #e8f6ee; color: #14532d; }
.message--erreur { display: block; background: #fdecec; color: #7f1d1d; }
.message a { color: inherit; font-weight: 700; }

/* Pied de page */
.pied { background: var(--bleu-fonce); color: rgba(255, 255, 255, .8); padding: 48px 0 100px; font-size: .95rem; }
.pied a { color: var(--blanc); }
.pied__grille { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.pied h3 { color: var(--blanc); font-size: 1rem; }
.pied p { margin: 0 0 6px; }
.pied__bas { border-top: 1px solid rgba(255, 255, 255, .15); margin-top: 32px; padding-top: 20px; font-size: .85rem; }

/* Barre d'appel mobile */
.barre-mobile { display: none; }

/* Page texte (mentions légales) */
.page-texte { max-width: 780px; padding: 56px 20px 80px; margin: 0 auto; }
.page-texte h2 { font-size: 1.3rem; margin-top: 2em; }

@media (max-width: 960px) {
  .nav, .entete__tel { display: none; }
  .atouts { grid-template-columns: 1fr; }
  .cordes, .apropos, .devis__grille, .estimation__deux { grid-template-columns: 1fr; }
  .tuiles { grid-template-columns: repeat(2, 1fr); }
  .avis-grille { grid-template-columns: 1fr; }
  .chantier { grid-template-columns: 1fr 1fr; }
  .chantier__texte { grid-column: 1 / -1; }
  .pied__grille { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 52px 0; }
  .conteneur { padding: 0 16px; }
  .entete .bouton { display: none; }
  .accueil { min-height: 0; background-position: 70% center; }
  .accueil::before { background: rgba(3, 26, 63, .82); }
  .atouts, .prestations, .champs { grid-template-columns: 1fr; }
  .estimation__etape { padding: 22px 18px 4px; }
  .formulaire { padding: 22px; }
  .barre-mobile {
    display: grid; grid-template-columns: 1fr 1fr; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, .15);
  }
  .barre-mobile a {
    padding: 16px; text-align: center; font-weight: 700; text-decoration: none; color: var(--blanc);
    background: var(--bleu);
  }
  .barre-mobile a + a { background: var(--rouge); }
}