:root{
  --stone:#F2EDE4;
  --stone-2:#E4DACA;
  --stone-3:#CDBEA6;
  --ink:#24211D;
  --ink-soft:#5A544B;
  --anthracite:#2D2A26;
  --accent:#B4622A;      /* ocre / terre cuite */
  --accent-dark:#8F4A1C;
  --olive:#5F6B4B;
  --white:#FFFFFF;
  --radius:6px;
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Source Sans 3',system-ui,sans-serif;color:var(--ink);background:var(--stone);line-height:1.6;font-size:17px}
h1,h2,h3,h4{font-family:'Barlow Condensed',sans-serif;line-height:1.1;letter-spacing:.01em}
a{color:inherit}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
section{padding:88px 0}
.eyebrow{font-family:'Barlow Condensed',sans-serif;text-transform:uppercase;letter-spacing:.14em;color:var(--accent);font-weight:600;font-size:15px;margin-bottom:10px}
.section-title{font-size:clamp(32px,4.5vw,46px);text-transform:uppercase;margin-bottom:18px}
.lead{color:var(--ink-soft);max-width:680px;font-size:18px}

/* Boutons */
.btn{display:inline-block;padding:14px 26px;border-radius:var(--radius);font-weight:600;text-decoration:none;font-size:16px;transition:.2s;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border-color:#fff;color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}

/* Top bar */
.topbar{background:var(--anthracite);color:#d8d2c7;font-size:14px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar a{text-decoration:none}
.topbar .contacts{display:flex;gap:22px;flex-wrap:wrap}

/* Header */
header{background:var(--white);position:sticky;top:0;z-index:50;box-shadow:0 2px 14px rgba(0,0,0,.06)}
header .container{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;flex-direction:column;text-decoration:none}
.logo strong{font-family:'Barlow Condensed',sans-serif;font-size:32px;letter-spacing:.06em;line-height:1}
.logo strong em{font-style:normal;color:var(--accent)}
.logo small{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.logo img{height:48px;width:auto}
nav ul{display:flex;gap:28px;list-style:none;align-items:center}
nav a{text-decoration:none;font-weight:600;font-size:16px}
nav a:hover{color:var(--accent)}
nav .btn{padding:10px 18px;color:#fff}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:26px;height:3px;background:var(--ink);margin:5px 0;border-radius:2px}

/* Bandeau d'accroche (remplace l'ancien hero) */
.bandeau{background:#F7F5F1;color:var(--ink);min-height:30vh;display:flex;align-items:center;padding:40px 0}
.bandeau h1{font-size:clamp(32px,4vw,46px);text-transform:uppercase;margin-bottom:12px;color:var(--ink)}
.bandeau h1 em{font-style:normal;color:var(--accent)}
.bandeau p{font-size:19px;max-width:640px;margin-bottom:22px;color:var(--ink-soft)}
.bandeau .eyebrow{color:var(--accent)}

/* Chiffres */
.figures{background:var(--anthracite);color:#fff;padding:0}
.figures .container{display:grid;grid-template-columns:repeat(4,1fr)}
.fig{padding:34px 20px;text-align:center;border-right:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;justify-content:flex-start;align-items:center;gap:6px}
.fig:last-child{border-right:0}
.fig b{display:block;font-family:'Barlow Condensed',sans-serif;font-size:46px;color:#E9A56E;line-height:1}
.fig span{font-size:15px;color:#cfc8bc;text-transform:uppercase;letter-spacing:.08em;line-height:1.5;text-wrap:balance}

.checks{list-style:none;margin-top:22px}
.checks li{padding-left:30px;position:relative;margin-bottom:10px;font-weight:600}
.checks li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:9px;border-left:3px solid var(--accent);border-bottom:3px solid var(--accent);transform:rotate(-45deg)}
.checks li.check-decennale{display:flex;align-items:center;gap:12px}
.checks li.check-decennale::before{top:calc(50% - 9px)}
.check-decennale img{height:56px;width:auto;flex:none}

/* Tuiles d'activités (#savoir-faire) */
.tiles{padding:0;display:grid;grid-template-columns:repeat(3,1fr);border-top:6px solid var(--accent);background:var(--stone)}
.tile+.tile{border-left:3px solid var(--stone)}
.tile-photo{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--stone-3)}
.tile-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.tile-photo-villa img{object-position:60% 10%} /* garde le bâtiment et son toit dans le cadre */
.tile-body{padding:34px 32px 44px}
.tile h2{font-size:clamp(26px,2.6vw,36px);font-weight:700;text-transform:uppercase}
.tile h2::after{content:"";display:block;width:60px;height:4px;background:var(--accent);margin:16px 0 20px}
.tile ul{list-style:none}
.tile li{padding:5px 0 5px 22px;position:relative}
.tile li::before{content:"";position:absolute;left:0;top:14px;width:8px;height:8px;background:var(--accent)}

/* Méthode */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:46px;counter-reset:s}
.step{border-top:3px solid var(--accent);padding-top:20px;counter-increment:s}
.step::before{content:"0" counter(s);font-family:'Barlow Condensed',sans-serif;font-size:44px;color:var(--stone-3);font-weight:700;display:block;line-height:1;margin-bottom:8px}
.step h4{font-size:22px;text-transform:uppercase;margin-bottom:6px}
.step p{color:var(--ink-soft);font-size:16px}

/* Réalisations */
.realisations{background:var(--anthracite);color:#fff}
.realisations .lead{color:#cfc8bc}
.chantiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:46px}
.chantier{position:relative;background:var(--stone);color:var(--ink);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.chantier-photo{display:block;aspect-ratio:4/3;overflow:hidden}
.chantier-photo img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.chantier-photo::after{content:"";position:absolute;inset:0} /* toute la carte est cliquable */
.chantier-photo:focus-visible{outline:none}
.chantier:has(.chantier-photo:focus-visible){outline:3px solid #E9A56E;outline-offset:3px}
.chantier:hover .chantier-photo img{transform:scale(1.03)}
.chantier-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.chantier h3{font-size:24px;text-transform:uppercase;margin-bottom:4px}
.chantier-lieu{color:var(--ink-soft);font-size:15px;margin-bottom:14px}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.tags li{font-size:13px;font-weight:600;background:var(--stone-2);color:var(--ink);padding:3px 10px;border-radius:20px}
.chantier-voir{margin-top:auto;font-weight:600;color:var(--accent)}
.chantier-voir::after{content:" →"}
.chantier:hover .chantier-voir{color:var(--accent-dark)}
.chantiers.repliee .chantier-extra{display:none} /* cartes 7 et suivantes, affichées par le bouton */
.chantiers-plus{text-align:center;margin-top:40px}
.chantiers-plus .btn{background:transparent;font-family:inherit}
.chantiers-plus .btn:hover{background:#fff}
.chantiers-plus .btn:focus-visible{outline:3px solid #E9A56E;outline-offset:3px}
.chantiers-plus .btn[hidden]{display:none}

/* Qui suis-je (#artisan) */
.artisan .container{display:grid;grid-template-columns:min(40%,460px) 1fr;gap:56px;align-items:start}
.artisan-photo{border-radius:var(--radius);overflow:hidden}
.artisan-photo img{width:100%;height:auto}
.artisan p{color:var(--ink-soft);margin-bottom:16px}
.timeline{margin-top:28px;border-left:2px solid var(--stone-3);padding-left:24px}
.timeline div{position:relative;margin-bottom:18px}
.timeline div::before{content:"";position:absolute;left:-31px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent)}
.timeline b{font-family:'Barlow Condensed',sans-serif;font-size:22px;color:var(--accent);margin-right:8px}

/* Contact */
.contact .container{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}
.contact-info{background:var(--anthracite);color:#fff;border-radius:var(--radius);padding:40px;align-self:start}
.contact-info h3{font-size:32px;text-transform:uppercase;margin-bottom:24px}
/* Zone d'intervention (encadré + communes), sur toute la largeur de la section */
.zone-intervention{grid-column:1/-1;border-top:3px solid var(--accent);padding-top:36px}
.zone-intervention h3{font-size:32px;text-transform:uppercase;margin-bottom:24px}
.zone-grille{display:grid;grid-template-columns:minmax(0,35fr) minmax(0,65fr);gap:40px;align-items:center}
.zone-encart{background:var(--anthracite);color:#fff;border-radius:var(--radius);padding:22px 24px;margin:0}
.zone-encart strong{display:block;font-family:'Barlow Condensed',sans-serif;font-size:30px;text-transform:uppercase;color:#E9A56E;line-height:1.1}
.zone-encart span{color:#cfc8bc}
.zone-infos h4{font-size:20px;text-transform:uppercase;margin-bottom:12px}
.zone-infos .tags{margin-bottom:12px}
.zone-etc{font-size:14px;color:var(--ink-soft)}
.info-line{margin-bottom:22px}
.info-line small{display:block;text-transform:uppercase;letter-spacing:.1em;color:#E9A56E;font-size:13px;font-weight:600}
.info-line a,.info-line p{font-size:19px;text-decoration:none;color:#fff}
.tel-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px}
.info-line .whatsapp{display:inline-flex;align-items:center;gap:7px;font-size:16px;font-weight:600;padding:5px 13px;border:1.5px solid #25D366;border-radius:20px}
.info-line .whatsapp:hover{background:rgba(37,211,102,.15)}
.info-line .whatsapp .wa-icon{color:#25D366}
.wa-icon{width:18px;height:18px;flex:none}
form{display:grid;gap:16px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-weight:600;font-size:15px;display:block;margin-bottom:6px}
input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--stone-3);border-radius:var(--radius);font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
textarea{min-height:140px;resize:vertical}
.rgpd{font-size:13px;color:var(--ink-soft)}
.obligatoire{color:var(--accent);font-weight:700}
.btn-whatsapp{background:#25D366;color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:inherit}
.btn-whatsapp:hover{background:#1EBE5A}
.btn-whatsapp .wa-icon{width:22px;height:22px}
.form-alt{font-size:15px;color:var(--ink-soft);text-align:center;margin-top:-4px}
.link-btn{background:none;border:0;padding:0;font:inherit;color:var(--accent-dark);text-decoration:underline;cursor:pointer}
.link-btn:hover{color:var(--accent)}
.form-confirm{font-weight:600;color:var(--olive)}
.form-confirm:empty{display:none}

/* Footer */
footer{background:#1C1A17;color:#bdb6aa;padding:56px 0 28px;font-size:15px}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;margin-bottom:40px}
footer h4{color:#fff;font-size:20px;text-transform:uppercase;margin-bottom:14px}
footer ul{list-style:none}
footer li{margin-bottom:6px}
footer a{text-decoration:none}
footer a:hover{color:#E9A56E}
.footer-logo{height:60px;width:auto;margin-bottom:16px}
.footer-decennale{height:56px;width:auto;margin-top:18px}
details{border-top:1px solid #333;padding-top:20px}
summary{cursor:pointer;color:#fff;font-weight:600}
.legal{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;font-size:14px}
.legal h5{color:#fff;font-size:15px;margin-bottom:6px}
.copy{text-align:center;margin-top:28px;font-size:13px;color:#7d776d}

/* Bouton appel flottant mobile */
.call-fab{display:none;position:fixed;right:16px;bottom:16px;z-index:60;background:var(--accent);color:#fff;border-radius:40px;padding:14px 20px;font-weight:700;text-decoration:none;box-shadow:0 8px 20px rgba(0,0,0,.25)}
.whatsapp-fab{bottom:78px;background:#25D366} /* au-dessus du bouton Appeler */
.call-fab .wa-icon{width:20px;height:20px;vertical-align:-4px;margin-right:2px}

/* Responsive */
@media (max-width:960px){
  .tiles{grid-template-columns:1fr}
  .tile+.tile{border-left:0;border-top:3px solid var(--stone-2)}
  .tile-photo{aspect-ratio:16/10}
  .steps{grid-template-columns:repeat(2,1fr)}
  .chantiers{grid-template-columns:repeat(2,1fr)}
  .contact .container{grid-template-columns:1fr;gap:40px}
}
@media (max-width:768px){
  section{padding:64px 0}
  .topbar .zone{display:none}
  nav ul{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:18px;box-shadow:0 10px 20px rgba(0,0,0,.08)}
  nav ul.open{display:flex}
  .burger{display:block}
  .figures .container{grid-template-columns:repeat(2,1fr);grid-auto-rows:1fr} /* 4 cases de même hauteur */
  .fig:nth-child(2){border-right:0}
  .fig{border-bottom:1px solid rgba(255,255,255,.1)}
  .fig{padding:28px 10px}
  .fig b{font-size:clamp(28px,8.5vw,46px)} /* « Depuis 2009 » sur une ligne */
  .steps{grid-template-columns:1fr}
  .chantiers{grid-template-columns:1fr}
  .row{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr}
  .call-fab{display:block}
  .logo img{height:40px}
  .bandeau{min-height:auto;padding:48px 0}
}

@media (max-width:767px){
  .zone-grille{grid-template-columns:1fr;gap:24px} /* encadré au-dessus, communes en dessous */
  /* photo en pleine largeur au-dessus du texte, affichée en entier (pas de recadrage) */
  .artisan .container{grid-template-columns:1fr;gap:32px}
}

/* Page secondaire (404.html) – n'affecte pas la page d'accueil */
.page-msg{min-height:calc(100vh - 76px - 60px);display:flex;align-items:center;text-align:center}
.page-msg .container{max-width:680px}
.page-msg .code{font-family:'Barlow Condensed',sans-serif;font-size:clamp(80px,14vw,140px);font-weight:700;color:var(--stone-3);line-height:1;margin-bottom:6px}
.page-msg .lead{margin:0 auto 32px}
.page-footer{background:#1C1A17;color:#7d776d;padding:20px 0;font-size:13px;text-align:center}

/* Lightbox (photos d'un chantier) */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(20,18,15,.94);display:flex;align-items:center;justify-content:center}
.lightbox[hidden]{display:none}
.lightbox img{max-width:calc(100vw - 140px);max-height:88vh;object-fit:contain;border-radius:4px}
/* photo cliquable : moitié gauche = précédente, moitié droite = suivante */
.lb-photo{position:relative;line-height:0;border-radius:4px;overflow:hidden}
.lb-photo::before,.lb-photo::after{content:"";position:absolute;top:0;bottom:0;width:50%;opacity:0;transition:opacity .2s;pointer-events:none}
.lb-photo::before{left:0;background:linear-gradient(to right,rgba(0,0,0,.35),transparent)}
.lb-photo::after{right:0;background:linear-gradient(to left,rgba(0,0,0,.35),transparent)}
.lb-photo.cote-gauche{cursor:w-resize}
.lb-photo.cote-droite{cursor:e-resize}
@media (hover:hover){.lb-photo.cote-gauche::before,.lb-photo.cote-droite::after{opacity:1}}
.lightbox button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:52px;height:52px;font-size:34px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lightbox button[hidden]{display:none}
.lightbox button:hover{background:rgba(255,255,255,.25)}
.lightbox button:focus-visible{outline:3px solid #E9A56E;outline-offset:2px}
.lb-close{top:16px;right:16px}
.lb-prev{left:16px;top:50%;transform:translateY(-50%)}
.lb-next{right:16px;top:50%;transform:translateY(-50%)}

@media (max-width:768px){
  .lightbox img{max-width:100vw;max-height:80vh;border-radius:0}
  .lb-photo{border-radius:0}
  .lb-prev,.lb-next{top:auto;bottom:20px;transform:none}
}