:root{
  --orange: #E5720A;
  --orange-dark: #C25E05;
  --green: #059669;
  --green-dark: #047857;
  --white: #FFFFFF;
  --surface: #F2F9F6;
  --ink: #1C2B24;
  --ink-soft: #55645C;
  --border: rgba(5,150,105,0.18);
  --radius: 14px;
  --font-display: "Montserrat", sans-serif;
  --font-body: "Montserrat", sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-weight:400;
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
}
h1,h2,h3{
  font-family:var(--font-display);
  font-weight:700;
  color:var(--green);
  line-height:1.15;
  margin:0 0 0.5em;
}
p{margin:0 0 1em;}
a{color:inherit;}
img{max-width:100%; display:block;}
.section-inner{max-width:1120px; margin:0 auto; padding:0 24px;}
.eyebrow{
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:0.08em;
  color:var(--orange-dark);
  font-weight:600;
  font-size:14px;
  margin:0 0 8px;
}
.section-lede{color:var(--ink-soft); max-width:560px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 28px;
  border-radius:999px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:15px;
  text-decoration:none;
  border:1.5px solid transparent;
  transition:transform 0.15s ease, background 0.15s ease;
  cursor:pointer;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--orange); color:var(--white);}
.btn-primary:hover{background:var(--orange-dark);}
.btn-whatsapp{background:var(--green); color:var(--white);}
.btn-whatsapp:hover{background:var(--green-dark);}
.btn-ghost{background:transparent; color:var(--green); border-color:var(--border);}
.btn-ghost:hover{border-color:var(--green);}

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1120px; margin:0 auto; padding:10px 24px;
  display:flex; align-items:center; gap:24px;
}
.brand{display:flex; align-items:center; text-decoration:none; flex:none;}
.brand-logo{height:34px; width:auto; display:block;}
.main-nav{display:flex; gap:18px; margin-left:auto; flex-wrap:nowrap;}
.main-nav a{
  text-decoration:none; color:var(--ink); font-weight:500; font-size:15px;
  padding:6px 0; border-bottom:2px solid transparent; white-space:nowrap;
}
.main-nav a:hover{border-color:var(--orange);}
.main-nav a.current{border-color:var(--orange); color:var(--green); font-weight:600;}
.header-cta{padding:10px 20px; font-size:14px; white-space:nowrap;}
.nav-toggle{display:none; flex-direction:column; gap:4px; background:none; border:none; cursor:pointer; padding:6px;}
.nav-toggle span{width:22px; height:2px; background:var(--green);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--green);
  color:var(--white);
  padding:96px 24px 80px;
  overflow:hidden;
}
.hero-slides{position:absolute; inset:0; z-index:0;}
.hero-slide{
  position:absolute; inset:0;
  background-size:cover; background-position:center 30%;
  opacity:0; transition:opacity 1.6s ease;
}
.hero-slide.active{opacity:1;}
.hero::before{
  content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(115deg, rgba(4,120,87,0.92) 0%, rgba(5,150,105,0.80) 45%, rgba(5,150,105,0.55) 100%);
}
.hero-roofline{
  position:absolute; inset:0; z-index:2;
  background:
    linear-gradient(115deg, transparent 60%, rgba(255,255,255,0.10) 60%, rgba(255,255,255,0.10) 62%, transparent 62%),
    linear-gradient(115deg, transparent 74%, rgba(229,114,10,0.28) 74%, rgba(229,114,10,0.28) 76%, transparent 76%);
  pointer-events:none;
}
.hero-inner{position:relative; z-index:3; max-width:720px; margin:0 auto; text-align:center;}
.hero h1{color:var(--white); font-size:clamp(38px,6vw,58px); margin-bottom:20px;}
.hero .eyebrow{color:var(--white); font-size:16px; letter-spacing:0.06em; opacity:0.95;}
.hero-lede{color:rgba(255,255,255,0.88); font-size:18px; max-width:560px; margin:0 auto 32px;}
.hero-actions{display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-bottom:40px;}
.hero-badges{
  list-style:none; display:flex; flex-wrap:wrap; justify-content:center;
  gap:10px; padding:0; margin:0;
}
.hero-badges li{
  border:1px solid rgba(255,255,255,0.35);
  color:var(--white);
  font-size:13px; padding:6px 14px; border-radius:999px;
}

/* ---------- Intro (accueil) ---------- */
.intro{padding:64px 0; background:var(--white); text-align:center;}
.intro p{max-width:680px; margin:0 auto; color:var(--ink-soft); font-size:17px;}

/* ---------- Services ---------- */
.services{padding:80px 0; background:var(--surface);}
.services h2, .realisations h2, .clients h2, .certifications h2, .contact h2{font-size:clamp(26px,4vw,34px);}
.service-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px; margin-top:36px;
}
.service-card{
  background:var(--white); border:1px solid var(--border);
  border-radius:var(--radius); padding:32px 28px;
}
.service-icon{
  width:48px; height:48px; border-radius:10px;
  background:rgba(229,114,10,0.12); color:var(--orange-dark);
  display:flex; align-items:center; justify-content:center; margin-bottom:18px;
}
.service-icon svg{width:24px; height:24px;}
.service-card h3{font-size:20px; margin-bottom:8px;}
.service-card p{color:var(--ink-soft); font-size:15px; margin:0;}

/* ---------- Clients (apercu accueil) ---------- */
.clients{padding:80px 0; background:var(--surface);}
.client-list{
  list-style:none; display:flex; flex-wrap:wrap; gap:12px; padding:0; margin-top:32px;
}
.client-list li{
  background:var(--white); border:1px solid var(--border); border-radius:999px;
  padding:10px 20px; font-weight:600; font-family:var(--font-display);
  font-size:15px; color:var(--green); letter-spacing:0.01em;
}

/* ---------- Certifications ---------- */
.certifications{padding:80px 0; background:var(--white);}
.cert-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:20px; margin-top:32px;
}
.cert-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:24px; text-align:center;
}
.cert-card .cert-icon{
  width:44px; height:44px; margin:0 auto 14px; border-radius:50%;
  background:var(--green); color:var(--white);
  display:flex; align-items:center; justify-content:center;
}
.cert-card .cert-icon svg{width:22px; height:22px;}
.cert-card h3{font-size:16px; margin-bottom:4px;}
.cert-card p{font-size:13px; color:var(--ink-soft); margin:0;}

.compliance-facts{
  list-style:none; padding:0; margin:40px 0 0;
  display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:20px;
}
.compliance-facts li{
  background:var(--surface); border-radius:var(--radius); padding:20px;
  display:flex; flex-direction:column; gap:4px;
}
.compliance-facts strong{font-family:var(--font-display); font-size:26px; color:var(--orange-dark);}
.compliance-facts span{font-size:13px; color:var(--ink-soft);}

/* ---------- Page hero (pages secondaires) ---------- */
.page-hero{
  background:var(--green); color:var(--white);
  padding:64px 0 48px;
}
.page-hero h1{color:var(--white); font-size:clamp(30px,5vw,42px); margin-bottom:12px;}
.page-hero .eyebrow{color:var(--white); font-size:16px; letter-spacing:0.06em; opacity:0.95;}
.page-hero .section-lede{color:rgba(255,255,255,0.85);}

/* ---------- Services detail page ---------- */
.services-detail{padding:72px 0; background:var(--white);}
.service-detail-row{
  display:grid; grid-template-columns:64px 1fr; gap:24px;
  padding:32px 0; border-bottom:1px solid var(--border);
}
.service-detail-row:last-child{border-bottom:none;}
.service-detail-row .service-icon{margin-bottom:0;}
.service-detail-row h2{font-size:24px; margin-bottom:8px;}
.service-list{margin:12px 0 0; padding-left:20px; color:var(--ink-soft); font-size:15px;}
.service-list li{margin-bottom:6px;}

.cta-band{background:var(--surface); padding:56px 0;}
.cta-band-inner{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px;}
.cta-band-inner h2{margin:0; font-size:24px;}

/* ---------- Logo grid (page clients) ---------- */
.clients-full{padding:72px 0; background:var(--white);}
.logo-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:20px; margin-top:36px;
}
.logo-card{
  background:var(--white); border:1px solid var(--border); border-radius:var(--radius);
  padding:24px 16px; display:flex; flex-direction:column; align-items:center; gap:14px;
  text-align:center;
}
.logo-img{width:100%; max-width:150px; height:80px; object-fit:contain;}
.logo-badge{
  width:64px; height:64px; border-radius:50%;
  background:var(--surface); border:1.5px solid var(--border);
  color:var(--orange-dark); font-family:var(--font-display); font-weight:700; font-size:16px;
  display:flex; align-items:center; justify-content:center;
}
.logo-name{font-size:13px; color:var(--ink-soft); line-height:1.4;}

/* ---------- Realisations page ---------- */
.realisations-full{padding:64px 0; background:var(--white);}
.realisation-project{padding:40px 0; border-bottom:1px solid var(--border);}
.realisation-project:last-child{border-bottom:none;}
.realisation-project-head{margin-bottom:20px;}
.realisation-project-head h2{font-size:22px; margin-bottom:6px;}
.realisation-project-head p{font-size:14px; color:var(--ink-soft); margin:0;}
.photo-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(140px,1fr));
  gap:10px;
}
.photo-grid button{
  padding:0; border:none; background:none; cursor:pointer; border-radius:10px; overflow:hidden;
  aspect-ratio:1/1; display:block;
}
.photo-grid img{width:100%; height:100%; object-fit:cover; transition:transform 0.2s ease;}
.photo-grid button:hover img{transform:scale(1.06);}

/* Lightbox */
.lightbox{
  position:fixed; inset:0; background:rgba(15,25,20,0.92); z-index:200;
  display:none; align-items:center; justify-content:center; padding:24px;
}
.lightbox.open{display:flex;}
.lightbox img{max-width:min(900px,90vw); max-height:80vh; object-fit:contain; border-radius:8px;}
.lightbox-close, .lightbox-prev, .lightbox-next{
  position:absolute; background:rgba(255,255,255,0.12); color:var(--white); border:none;
  border-radius:50%; width:44px; height:44px; font-size:20px; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.lightbox-close{top:20px; right:20px;}
.lightbox-prev{left:20px; top:50%; transform:translateY(-50%);}
.lightbox-next{right:20px; top:50%; transform:translateY(-50%);}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover{background:rgba(255,255,255,0.25);}
.lightbox-counter{position:absolute; bottom:20px; left:50%; transform:translateX(-50%); color:rgba(255,255,255,0.75); font-size:13px;}

.video-gallery{padding:64px 0; background:var(--surface);}
.video-category{margin-top:40px;}
.video-category:first-of-type{margin-top:32px;}
.video-category h3{font-size:19px; color:var(--green); margin-bottom:16px;}
.video-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:20px;
}
.video-card{
  background:var(--white); border:1px solid var(--border); border-radius:var(--radius);
  overflow:hidden;
}
.video-card video{width:100%; display:block; background:#000; aspect-ratio:9/16; max-height:480px; object-fit:contain;}
.video-empty{
  background:var(--white); border:1.5px dashed var(--border); border-radius:var(--radius);
  padding:40px 24px; text-align:center; color:var(--ink-soft); font-size:14px; margin-top:32px;
}

/* ---------- Contact ---------- */
.contact{padding:80px 0 100px; background:var(--surface);}
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start;}
.contact-list{list-style:none; padding:0; margin:24px 0 32px; display:flex; flex-direction:column; gap:14px;}
.contact-list li{display:flex; flex-direction:column; font-size:15px;}
.contact-label{font-size:12px; text-transform:uppercase; letter-spacing:0.05em; color:var(--ink-soft); margin-bottom:2px;}
.contact-list a{color:var(--green); font-weight:600; text-decoration:none;}
.contact-list a:hover{text-decoration:underline;}

.contact-full{padding:72px 0; background:var(--white);}
.contact-form{
  background:var(--white); border:1px solid var(--border); border-radius:var(--radius);
  padding:28px; display:flex; flex-direction:column; gap:14px;
}
.contact-form label{font-size:13px; font-weight:600; color:var(--ink-soft); margin-bottom:-8px;}
.contact-form input, .contact-form select, .contact-form textarea{
  font-family:var(--font-body); font-size:15px; padding:11px 14px;
  border:1px solid var(--border); border-radius:8px; background:var(--surface);
  color:var(--ink); width:100%;
}
.contact-form textarea{resize:vertical;}
.contact-form button{margin-top:6px; align-self:flex-start;}
.hidden-field{position:absolute; left:-9999px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--green); color:rgba(255,255,255,0.85); padding:24px;}
.footer-inner{
  max-width:1120px; margin:0 auto; display:flex; justify-content:space-between;
  flex-wrap:wrap; gap:8px; font-size:13px;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .contact-grid{grid-template-columns:1fr;}
  .main-nav{
    position:fixed; top:64px; left:0; right:0; background:var(--white);
    flex-direction:column; padding:16px 24px; gap:14px;
    border-bottom:1px solid var(--border);
    transform:translateY(-140%); transition:transform 0.2s ease;
  }
  .main-nav.open{transform:translateY(0);}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
}
@media (max-width:520px){
  .hero{padding:72px 20px 56px;}
  .services, .realisations, .clients, .certifications, .contact, .intro{padding:56px 0;}
}