:root{
  --blue:#0a4d8c;
  --orange:#ff8a00;
  --muted:#6b7280;
  --bg:#ffffff;
  --card:#f8fafb;
  --radius:12px;
  --maxw:1200px;
  --sans: "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box}
body{font-family:var(--sans);margin:0;background:var(--bg);color:#0b1220;line-height:1.5}
.header{background:#fff;border-bottom:1px solid #eef2f6;padding:12px 0;position:fixed;top:0;left:0;right:0;z-index:100}
.container{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:14px}
.brand img{height:110px} /* larger logo */
.brand .title{font-size:1.35rem;font-weight:800;color:var(--blue);line-height:1}
.brand .subtitle{font-size:0.86rem;color:var(--muted);margin-top:4px}
.menu{display:flex;gap:12px;align-items:center}
.menu a{color:var(--blue);text-decoration:none;font-weight:600;padding:8px 10px;border-radius:8px}
.menu a:hover{background:rgba(10,77,140,0.06)}
.btn-devis{background:var(--orange);color:white;padding:9px 12px;border-radius:8px;text-decoration:none;font-weight:800;display:inline-block;margin-left:8px}

/* page spacing to account for fixed header */
.page{padding-top:140px}

.hero{background:linear-gradient(180deg, #fff 0%, #fbfdff 100%);padding:26px;border-radius:12px;margin-top:18px;box-shadow:0 8px 24px rgba(12,18,30,0.04)}
.grid{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
.card{background:var(--card);padding:18px;border-radius:var(--radius);box-shadow:0 6px 20px rgba(12,18,30,0.04)}
h1,h2{color:var(--blue);margin:0 0 10px 0}
.lead{color:var(--muted);margin-top:6px}

.services{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.service{flex:1 1 160px;background:white;border:1px solid #eef4fb;padding:12px;border-radius:10px}

.slideshow{position:relative;border-radius:10px;overflow:hidden;margin-top:18px}
.slides{display:flex;transition:transform 0.7s ease}
.slide{min-width:100%;height:480px;display:flex;align-items:center;justify-content:center;background:#000}
.slide img{width:100%;height:100%;object-fit:cover}

.controls{position:absolute;left:12px;right:12px;top:50%;transform:translateY(-50%);display:flex;justify-content:space-between;pointer-events:none}
.ctrl{pointer-events:auto;background:rgba(255,255,255,0.95);border-radius:50%;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 18px rgba(12,18,30,0.08)}

.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}
.gallery img{width:100%;height:200px;object-fit:cover;border-radius:8px;cursor:pointer;transition:transform .18s ease}
.gallery img:hover{transform:scale(1.03)}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(6,17,37,0.78);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:0;pointer-events:none;transition:opacity .25s ease}
.lightbox.open{opacity:1;pointer-events:auto}
.lightbox-content{max-width:95%;max-height:95%;position:relative}
.lightbox img{max-width:100%;max-height:84vh;display:block;border-radius:6px}
.lb-caption{color:#fff;margin-top:10px;text-align:center;font-size:0.95rem}
.lb-close{position:absolute;top:-18px;right:-18px;background:#fff;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:100%;display:flex;justify-content:space-between;pointer-events:none}
.lb-arrow{pointer-events:auto;background:rgba(255,255,255,0.95);border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 18px rgba(12,18,30,0.12)}

.footer{margin-top:28px;padding:22px 0;text-align:center;color:var(--muted);font-size:0.95rem}

@media(max-width:900px){
  .grid{grid-template-columns:1fr;padding-bottom:10px}
  .brand img{height:84px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .slide{height:300px}
  .menu{display:none} /* hide menu on small screens to keep header clean */
  .header{padding:10px 0}
  .brand .title{font-size:1.05rem}
}