/* Les deux couleurs principales sont réglées depuis l'administration (Général). */
:root {
  --accent: #C9A227;
  --sombre: #151515;
  --texte: #1d1d1d;
  --doux: #5c5c5c;
  --fond: #ffffff;
  --gris: #f3f1ed;
  --ligne: #e3dfd7;
  --rayon: 14px;
  --largeur: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0; background: var(--fond); color: var(--texte);
  font-family: "Archivo", system-ui, sans-serif; font-size: 17px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.1; margin: 0 0 .5em; font-weight: 900; letter-spacing: -.01em; }
h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); text-transform: uppercase; }
h3 { font-size: 1.25rem; }

.conteneur { width: 100%; max-width: var(--largeur); margin: 0 auto; padding: 0 20px; }

/* Bandeau d'annonce */
.bandeau { background: var(--accent); color: var(--sombre); text-align: center; padding: 8px 16px; font-weight: 600; font-size: .95rem; }

/* En-tête */
.entete { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--ligne); }
.entete__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.entete__logo img { height: 56px; width: auto; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { text-decoration: none; font-weight: 600; font-size: .95rem; text-transform: uppercase; letter-spacing: .03em; }
.nav a:hover { color: var(--accent); }
.nav .nav__cta { background: var(--sombre); color: #fff; padding: 10px 18px; border-radius: 999px; }
.nav .nav__cta:hover { background: var(--accent); color: var(--sombre); }
.menu-btn { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; cursor: pointer; }
.menu-btn span { display: block; height: 2px; background: var(--sombre); margin: 6px 0; transition: .2s; }

/* Boutons */
.btn { display: inline-block; text-decoration: none; font-weight: 800; text-transform: uppercase; letter-spacing: .03em; font-size: .95rem; padding: 15px 26px; border-radius: 999px; border: 2px solid transparent; cursor: pointer; font-family: inherit; transition: .2s; }
.btn--accent { background: var(--accent); color: var(--sombre); }
.btn--accent:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn--contour { border-color: currentColor; color: #fff; }
.btn--contour:hover { background: #fff; color: var(--sombre); }

/* Hero : style "plan d'architecte" rappelant le logo */
.hero {
  position: relative; color: #fff; background-color: var(--sombre);
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px; overflow: hidden;
}
.hero::after { /* arc + réticule, comme sur le logo */
  content: ""; position: absolute; right: -120px; top: 50%; width: 560px; height: 560px; transform: translateY(-50%);
  border: 2px solid rgba(255,255,255,.12); border-radius: 50%; pointer-events: none;
}
.hero.avec-image { background-size: cover; background-position: center; }
.hero__inner { position: relative; z-index: 1; padding: 110px 20px 120px; max-width: var(--largeur); }
.surtitre { color: var(--accent); text-transform: uppercase; font-weight: 800; letter-spacing: .12em; font-size: .9rem; margin: 0 0 18px; }
.hero h1 { font-size: clamp(2.4rem, 6.4vw, 4.8rem); max-width: 14ch; text-transform: uppercase; }
.hero__sous { font-size: 1.2rem; max-width: 56ch; color: rgba(255,255,255,.82); margin: 0 0 34px; }
.hero__boutons { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__tel { display: inline-flex; gap: 10px; align-items: baseline; margin-top: 34px; text-decoration: none; color: rgba(255,255,255,.7); }
.hero__tel strong { color: #fff; font-size: 1.5rem; }

/* Atouts */
.atouts { background: var(--accent); color: var(--sombre); }
.atouts__grille { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0; }
.atout { padding: 26px 24px; border-left: 1px solid rgba(0,0,0,.15); }
.atout:first-child { border-left: 0; }
.atout strong { display: block; text-transform: uppercase; font-weight: 900; }
.atout span { font-size: .95rem; }

/* Sections */
.section { padding: 96px 0; }
.section--gris { background: var(--gris); }
.section--sombre { background: var(--sombre); color: #fff; }
.section__tete { max-width: 680px; margin-bottom: 48px; }
.section__tete p { color: var(--doux); font-size: 1.1rem; margin: 0; }
.section--sombre .section__tete p { color: rgba(255,255,255,.7); }

/* Services */
.services { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 22px; }
.service { border: 2px solid var(--sombre); border-radius: var(--rayon); padding: 30px 26px; transition: .2s; background: #fff; }
.service:hover { transform: translateY(-4px); box-shadow: 8px 8px 0 var(--accent); }
.service__icone { width: 56px; height: 56px; border-radius: 12px; background: var(--sombre); color: var(--accent); display: grid; place-items: center; margin-bottom: 20px; }
.service__icone svg { width: 30px; height: 30px; }
.service h3 { text-transform: uppercase; }
.service p { color: var(--doux); margin: 0 0 14px; }
.service ul { margin: 0; padding: 0; list-style: none; }
.service li { padding: 6px 0 6px 22px; position: relative; border-top: 1px solid var(--ligne); font-size: .95rem; }
.service li::before { content: ""; position: absolute; left: 0; top: 15px; width: 10px; height: 2px; background: var(--accent); }

/* Réalisations */
.filtres { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.filtres button { font-family: inherit; font-weight: 700; font-size: .9rem; text-transform: uppercase; padding: 9px 18px; border-radius: 999px; border: 2px solid var(--sombre); background: transparent; cursor: pointer; }
.filtres button.actif, .filtres button:hover { background: var(--sombre); color: #fff; }
.galerie { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.projet { background: #fff; border-radius: var(--rayon); overflow: hidden; cursor: zoom-in; transition: .2s; }
.projet:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(0,0,0,.1); }
.projet img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.projet__infos { padding: 18px 20px 22px; }
.projet__cat { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; color: var(--accent); filter: brightness(.8); }
.projet h3 { margin: 4px 0 6px; font-size: 1.1rem; }
.projet p { margin: 0; color: var(--doux); font-size: .95rem; }
.projet[hidden] { display: none; }

/* À propos */
.apropos { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: center; }
.apropos__photo { position: relative; }
.apropos__photo img { border-radius: var(--rayon); width: 100%; aspect-ratio: 4/5; object-fit: cover; position: relative; z-index: 1; }
.apropos__photo::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; border: 3px solid var(--accent); border-radius: var(--rayon); }
.texte-riche p { margin: 0 0 1em; color: #333; }
.valeurs { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-top: 28px; }
.valeur { border-top: 3px solid var(--sombre); padding-top: 12px; }
.valeur strong { display: block; text-transform: uppercase; }
.valeur span { color: var(--doux); font-size: .92rem; }

/* Avis */
.avis { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.avis__carte { border: 1px solid rgba(255,255,255,.15); border-radius: var(--rayon); padding: 28px; margin: 0; }
.avis__etoiles { color: var(--accent); letter-spacing: 3px; font-size: 1.15rem; }
.avis__carte blockquote { margin: 12px 0 18px; font-size: 1.05rem; }
.avis__carte figcaption { color: rgba(255,255,255,.65); font-size: .92rem; }
.avis__carte figcaption strong { color: #fff; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; }
.contact__intro { color: var(--doux); font-size: 1.1rem; }
.coordonnees { list-style: none; padding: 0; margin: 28px 0; }
.coordonnees li { padding: 14px 0; border-top: 1px solid var(--ligne); }
.coordonnees span { display: block; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--doux); font-weight: 600; }
.coordonnees a { text-decoration: none; }
.coordonnees a:hover strong { color: var(--accent); }
.reseaux { display: flex; gap: 12px; }
.reseaux a { font-weight: 700; text-decoration: none; border: 2px solid var(--sombre); border-radius: 999px; padding: 8px 16px; font-size: .9rem; }
.formulaire { background: var(--gris); border-radius: var(--rayon); padding: 34px; display: grid; gap: 16px; align-self: start; }
.formulaire__ligne { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.formulaire label { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; }
.formulaire input, .formulaire select, .formulaire textarea { font: inherit; padding: 13px 14px; border: 1.5px solid var(--ligne); border-radius: 10px; background: #fff; width: 100%; }
.formulaire input:focus, .formulaire select:focus, .formulaire textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.formulaire .btn { justify-self: start; }

/* Pied de page */
.pied { background: var(--sombre); color: rgba(255,255,255,.75); padding: 48px 0 32px; text-align: center; }
.pied__inner { display: grid; justify-items: center; gap: 6px; }
.pied__logo { height: 70px; width: auto; border-radius: 10px; margin-bottom: 14px; }
.pied a { text-decoration: none; }
.pied a:hover { color: var(--accent); }
.pied__bas { font-size: .85rem; opacity: .7; }

/* Bouton d'appel mobile */
.appel-flottant { display: none; position: fixed; right: 18px; bottom: 18px; z-index: 60; width: 58px; height: 58px; border-radius: 50%; background: var(--accent); color: var(--sombre); place-items: center; box-shadow: 0 8px 20px rgba(0,0,0,.25); }

/* Visionneuse photo */
.visionneuse { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.88); display: grid; place-items: center; padding: 20px; }
.visionneuse[hidden] { display: none; }
.visionneuse figure { margin: 0; max-width: 1000px; color: #fff; text-align: center; }
.visionneuse img { max-height: 80vh; margin: 0 auto 12px; border-radius: 8px; }
.visionneuse__fermer { position: absolute; top: 14px; right: 18px; background: none; border: 0; color: #fff; font-size: 2.4rem; cursor: pointer; }

/* Page simple (mentions légales, merci) */
.page-simple { padding: 70px 0 90px; max-width: 760px; }
.page-simple h1 { font-size: clamp(2rem, 5vw, 3rem); text-transform: uppercase; }
.page-simple h2 { font-size: 1.3rem; margin-top: 1.6em; }

/* Mobile */
@media (max-width: 900px) {
  .menu-btn { display: block; }
  .nav { position: absolute; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 20px; border-bottom: 1px solid var(--ligne); display: none; }
  .nav.ouvert { display: flex; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--ligne); }
  .nav .nav__cta { text-align: center; margin-top: 14px; border: 0; }
  .apropos, .contact { grid-template-columns: 1fr; gap: 48px; }
  .apropos__photo { max-width: 420px; }
  .appel-flottant { display: grid; }
  .section { padding: 72px 0; }
  .hero__inner { padding: 80px 20px 90px; }
  .atout { border-left: 0; border-top: 1px solid rgba(0,0,0,.15); }
  .atout:first-child { border-top: 0; }
}
@media (max-width: 560px) {
  .conteneur, .hero__inner { padding-left: 16px; padding-right: 16px; }
  .formulaire { padding: 22px; }
  .formulaire__ligne { grid-template-columns: 1fr; }
  .galerie { grid-template-columns: 1fr; }
  .entete__logo img { height: 48px; }
}