/* Ker Breizh Construction — charte KBC (d'après le logo : anthracite #123a5c, crème #F4F1EA, or #E8A33D) */
:root{
  --fond:#f4f1ea;        /* crème du logo */
  --fond-alt:#e9e5d8;
  --encre:#1e2a36;       /* texte */
  --titre:#123a5c;       /* anthracite du logo */
  --gris:#6a6a61;
  --or:#e8a33d;          /* doré du logo (accent, boutons) */
  --or-fonce:#9a6a15;    /* doré foncé lisible sur crème (liens) */
  --ligne:#dcd7c9;
  --blanc:#ffffff;
  --ombre:0 2px 14px rgba(18,58,92,.10);
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Archivo","Helvetica Neue",Arial,sans-serif;
  color:var(--encre);background:var(--fond);line-height:1.65;font-size:17px;
}
h1,h2,h3,.display{
  font-family:"Archivo","Helvetica Neue",Arial,sans-serif;
  text-transform:uppercase;letter-spacing:.015em;line-height:1.08;font-weight:800;color:var(--titre);
}
h1{font-size:clamp(2rem,5vw,3.3rem)}
h2{font-size:clamp(1.55rem,3.4vw,2.3rem);margin-bottom:.6em}
h3{font-size:1.1rem;letter-spacing:.03em;color:var(--or-fonce);font-weight:800}
p{margin-bottom:1em}
a{color:var(--or-fonce);text-decoration:none}
a:hover{text-decoration:underline}
img{display:block;max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:64px 0}
.section-alt{background:var(--fond-alt)}
.lead{font-size:1.15rem;color:var(--gris);max-width:62ch}

/* En-tête */
header.site{position:sticky;top:0;z-index:50;background:rgba(244,241,234,.96);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--ligne)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{height:46px;width:46px;display:block}
.brand .bwrap{display:flex;flex-direction:column;justify-content:center}
.brand .bt{font-family:"Archivo",sans-serif;text-transform:uppercase;letter-spacing:.05em;font-weight:800;font-size:1.02rem;color:var(--titre);line-height:1}
.brand .bs{display:block;font-size:.62rem;letter-spacing:.22em;color:var(--or-fonce);font-weight:700}
.nav ul{display:flex;gap:20px;list-style:none;flex-wrap:nowrap}
.nav a{color:var(--encre);font-size:.75rem;text-transform:uppercase;letter-spacing:.03em;font-weight:600;white-space:nowrap}
.nav a.active,.nav a:hover{color:var(--or-fonce);text-decoration:none}

/* Hero */
.hero{position:relative;min-height:76vh;display:flex;align-items:flex-end;
  background:linear-gradient(180deg,rgba(18,58,92,.15),rgba(18,58,92,.74)),url("../img/hero.jpg") center/cover no-repeat;color:#fff}
.hero .wrap{padding-bottom:56px;padding-top:56px}
.hero h1{color:#fff;max-width:16ch}
.hero p{color:#f1ede4;font-size:1.2rem;max-width:52ch}
.hero .kicker{color:var(--or);text-transform:uppercase;letter-spacing:.18em;font-size:.8rem;font-weight:800;margin-bottom:.8rem}

/* Boutons */
.btn{display:inline-block;background:var(--or);color:#123a5c;padding:13px 26px;text-transform:uppercase;
  letter-spacing:.07em;font-size:.82rem;font-weight:800;border-radius:2px}
.btn:hover{background:#123a5c;color:var(--fond);text-decoration:none}
.btn.ghost{background:transparent;border:1.5px solid #fff;color:#fff}
.btn.ghost:hover{background:#fff;color:#123a5c}

/* Tags périmètre neuf/réno (contraste fort, lisible daltoniens : anthracite vs or) */
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:.4rem 0 1rem}
.tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;padding:4px 11px;border-radius:2px}
.tag-neuf{background:#123a5c;color:#f4f1ea}
.tag-reno{background:var(--or);color:#123a5c}

/* Grilles / cartes */
.grid{display:grid;gap:28px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--blanc);border:1px solid var(--ligne);border-radius:3px;overflow:hidden;box-shadow:var(--ombre)}
.card .body{padding:20px 22px 24px}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}

/* Savoir-faire */
.metier{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;padding:40px 0;border-bottom:1px solid var(--ligne)}
.metier:last-child{border-bottom:0}
.metier .gal{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.metier .gal img{aspect-ratio:1/1;object-fit:cover;border-radius:2px}
.metier .gal img:first-child{grid-column:1/3;aspect-ratio:16/9}
.metier.rev .txt{order:2}

/* Chiffres */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.stat{background:var(--blanc);border-left:4px solid var(--or);padding:20px 22px;box-shadow:var(--ombre)}
.stat .n{font-family:"Archivo",sans-serif;font-size:2.4rem;font-weight:800;color:var(--titre);line-height:1}
.stat .l{font-size:.9rem;color:var(--gris)}

/* Listes */
ul.clean{list-style:none;margin:0 0 1em}
ul.clean li{padding-left:1.4em;position:relative;margin-bottom:.5em}
ul.clean li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;background:var(--or);border-radius:1px}

/* Pied */
footer.site{background:#123a5c;color:#d9d5c8;padding:48px 0 28px;font-size:.92rem}
footer.site h4{font-family:"Archivo",sans-serif;text-transform:uppercase;letter-spacing:.06em;color:#fff;margin-bottom:.6em;font-size:1rem;font-weight:800}
footer.site a{color:var(--or)}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.foot-brand img{height:46px;width:46px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:28px}
.foot-bas{border-top:1px solid rgba(255,255,255,.15);padding-top:18px;font-size:.82rem;color:#a49f90;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.sources{font-size:.8rem;color:var(--gris);border-top:1px solid var(--ligne);padding-top:20px;margin-top:8px}
.sources a{color:var(--or-fonce)}
.notice{background:#fbf4e3;border:1px solid var(--or);border-radius:3px;padding:14px 18px;font-size:.9rem;color:#6b5320;margin-bottom:24px}

/* Placeholder */
.ph{background:var(--fond-alt);border:1px dashed var(--ligne);display:flex;align-items:center;justify-content:center;
  color:#9a9484;font-size:.8rem;min-height:200px;border-radius:2px;text-transform:uppercase;letter-spacing:.09em;text-align:center;padding:16px}
.card .ph{min-height:180px;aspect-ratio:4/3}

@media(max-width:860px){
  .grid-3,.grid-2,.stats{grid-template-columns:1fr}
  .metier{grid-template-columns:1fr}
  .metier.rev .txt{order:0}
  .foot-grid{grid-template-columns:1fr}
  .nav ul{gap:14px}
  .brand .bs{display:none}
}

/* Sélecteur de langue */
.lang{display:flex;gap:5px;align-items:center}
.lang a{font-size:.68rem;font-weight:800;letter-spacing:.03em;color:var(--gris);padding:2px 5px;border-radius:2px}
.lang a.on{background:var(--titre);color:var(--fond)}
.lang a:hover{color:var(--or-fonce);text-decoration:none}

/* Menu mobile (burger sans JS) */
.navtoggle{display:none}
.burger{display:none;cursor:pointer;font-size:1.7rem;line-height:1;color:var(--titre);padding:2px 8px;user-select:none}

@media(max-width:1100px){
  .nav{height:auto;min-height:60px;flex-wrap:wrap;padding:8px 0;gap:10px}
  .brand{flex:1 1 auto}
  .brand img{height:44px;width:44px}
  .burger{display:block;order:2}
  .lang{order:3}
  .mainnav{order:4;width:100%;display:none}
  .navtoggle:checked ~ .mainnav{display:block}
  .mainnav ul{flex-direction:column;gap:0;width:100%}
  .mainnav li{border-top:1px solid var(--ligne)}
  .mainnav a{display:block;padding:13px 4px;font-size:.95rem}
  .hero{min-height:62vh}
}
@media(max-width:520px){
  body{font-size:16px}
  section{padding:44px 0}
  .wrap{padding:0 18px}
  .metier .gal img:first-child{aspect-ratio:4/3}
}

/* Grand logo (page entreprise) */
.biglogo{width:230px;max-width:62%;height:auto;margin:8px auto 0}
@media(max-width:520px){.biglogo{width:170px}}

/* Drapeaux du sélecteur de langue */
.lang a{display:inline-flex;align-items:center;gap:4px}
.lang .fl{width:17px;height:11px;border-radius:1px;box-shadow:0 0 0 1px rgba(0,0,0,.15);display:block;flex:0 0 auto}

/* Boutons alignés proprement */
.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}

/* Section Contact (CTA) bas de page d'accueil */
.cta{background:#123a5c;color:#e9e5d8}
.cta h2{color:#fff}
.cta p{color:#cfcabb;max-width:60ch;margin-left:auto;margin-right:auto}
.cta .cta-tel{margin:.6em 0 1.2em}
.cta .cta-tel a{font-family:"Archivo",sans-serif;font-weight:800;font-size:2rem;color:#fff;letter-spacing:.02em}
.cta .btn.ghost{border-color:#fff;color:#fff}
.cta .btn.ghost:hover{background:#fff;color:#123a5c}

/* Logos plaque et bandeau */
.logoband{width:min(560px,86%);height:auto;margin:0 auto 26px;display:block;border-radius:4px}
.logoplaque{width:min(300px,70%);height:auto;margin:26px 0 0;border-radius:4px;box-shadow:var(--ombre)}