:root{
  --ink:#0f1b2d;
  --slate:#4a5568;
  --slate-soft:#7c8698;
  --blue:#0000ff;
  --blue-deep:#00009c;
  --blue-tint:#eef0ff;
  --paper:#ffffff;
  --mist:#f5f6fa;
  --line:#e4e7ee;
  --navy:#0a1330;
  --navy-soft:#16204a;
  --font-title:'Montserrat',sans-serif;
  --font-text:'Inter',sans-serif;
  --radius-sm:8px;
  --radius-md:14px;
  --shadow-card:0 2px 6px rgba(15,27,45,.05),0 1px 2px rgba(15,27,45,.04);
  --shadow-card-hover:0 18px 34px rgba(15,27,45,.12);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-text);
  background:var(--paper);
  color:var(--slate);
  line-height:1.65;
  overflow-x:hidden;
}

.container{max-width:1160px;margin:0 auto;padding:0 24px;}
section{padding:96px 0;}
.section-tight{padding-top:0;}
.bg-mist{background:var(--mist);}
.eyebrow{display:inline-block;color:var(--blue);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.76rem;margin-bottom:14px;}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:700;letter-spacing:-.01em;color:var(--ink);}
h2{font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:16px;}
p{color:var(--slate);}
a{color:inherit;}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;text-decoration:none;cursor:pointer;border:1.5px solid transparent;transition:.2s ease;font-family:var(--font-text);}
.btn-primary{background:var(--blue);color:var(--white,#fff);}
.btn-primary:hover{background:var(--blue-deep);}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-secondary:hover{border-color:var(--blue);color:var(--blue);}

/* ---------- barre utilitaire ---------- */
.util-bar{background:var(--navy);color:#aab3cc;font-size:.82rem;}
.util-bar-inner{display:flex;align-items:center;gap:28px;padding:9px 0;flex-wrap:wrap;}
.util-item{display:flex;align-items:center;gap:7px;white-space:nowrap;}
.util-item svg{width:14px;height:14px;flex-shrink:0;}
.util-item a{color:#aab3cc;text-decoration:none;}
.util-item a:hover{color:#fff;}
.util-spacer{flex:1;}

/* ---------- en-tête ---------- */
header{position:sticky;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.100);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.header-inner{max-width:1160px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;text-decoration:none;}
.logo-img{height:250px;width:auto;display:block;}
.logo-plate{background:#fff;border-radius:8px;padding:7px 14px;}
.logo-plate .logo-img{height:250px;}
nav.main-nav{display:flex;gap:32px;}
nav.main-nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem;transition:.2s;padding-bottom:4px;border-bottom:2px solid transparent;}
nav.main-nav a:hover{color:var(--blue);}
nav.main-nav a.active{color:var(--blue);border-bottom-color:var(--blue);}
.header-actions{display:flex;align-items:center;gap:20px;}
.phone-link{color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem;white-space:nowrap;display:flex;align-items:center;gap:7px;}
.phone-link svg{width:16px;height:16px;color:var(--blue);}
.burger{display:none;background:none;border:none;color:var(--ink);font-size:1.6rem;cursor:pointer;line-height:1;}
.mobile-menu{display:none;flex-direction:column;gap:2px;padding:8px 24px 20px;background:#fff;border-bottom:1px solid var(--line);}
.mobile-menu a{color:var(--ink);text-decoration:none;padding:12px 0;border-bottom:1px solid var(--line);font-weight:600;}
.mobile-menu a:last-child{border-bottom:none;}
.mobile-menu a.active{color:var(--blue);}
.mobile-menu.open{display:flex;}

/* ---------- hero ---------- */
.hero{
  padding:100px 0 80px;
  background:linear-gradient(rgba(9,18,45,.40),rgba(9,18,45,.40)),url('nacelle.jpg') center 55%/cover no-repeat;
}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--blue-tint);border:1px solid #d3d7ff;color:var(--blue-deep);padding:7px 16px;border-radius:100px;font-size:.83rem;font-weight:600;margin-bottom:22px;}
.badge svg{width:15px;height:15px;}
.hero .badge{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);color:#fff;}
.hero h1{font-size:clamp(2rem,4.2vw,3rem);line-height:1.18;max-width:760px;margin-bottom:20px;color:#fff;}
.hero h1 .highlight{color:#8fa3ff;}
.hero-text{font-size:1.08rem;max-width:600px;margin-bottom:32px;color:var(--slate);}
.hero .hero-text{color:#ccd2e8;}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px;}
.hero .btn-secondary{color:#fff;border-color:rgba(255,255,255,.4);}
.hero .btn-secondary:hover{border-color:#fff;background:rgba(255,255,255,.1);}

.trust-strip{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:32px;}
.trust-item{padding:0 32px 0 0;margin-right:32px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:none;margin-right:0;padding-right:0;}
.trust-item strong{display:block;font-family:var(--font-title);font-size:1.25rem;color:var(--ink);}
.trust-item span{font-size:.82rem;color:var(--slate-soft);}
.hero .trust-strip{border-top-color:rgba(255,255,255,.22);}
.hero .trust-item{border-right-color:rgba(255,255,255,.22);}
.hero .trust-item strong{color:#fff;}
.hero .trust-item span{color:#aeb7d1;}

/* ---------- en-tête de page (pages secondaires) ---------- */
.page-header{padding:64px 0 56px;border-bottom:1px solid var(--line);}
.page-header h1{font-size:clamp(1.9rem,3.6vw,2.6rem);margin-bottom:14px;}
.page-header p{max-width:600px;font-size:1.02rem;}

.section-head-row{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:16px;margin-bottom:18px;}
.link-arrow{color:var(--blue);text-decoration:none;font-weight:600;font-size:.9rem;white-space:nowrap;}
.link-arrow:hover{text-decoration:underline;}

.page-header-photo{
  background-image:linear-gradient(rgba(9,18,45,var(--header-photo-opacity, .74)),rgba(9,18,45,var(--header-photo-opacity, .74))), var(--header-photo);
  background-position:var(--header-photo-pos, center 45%);
  background-size:cover;
  background-repeat:no-repeat;
  border-bottom:none;
  padding:var(--header-photo-height, 60px) 0;
}
.page-header-photo .eyebrow{color:#8fa3ff;}
.page-header-photo h1{color:#fff;}
.page-header-photo p{color:#ccd2e8;}
.page-header-photo .realisation-intro span{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3);}

/* ---------- icônes ---------- */
.icon-badge{width:50px;height:50px;flex-shrink:0;border-radius:12px;background:var(--blue-tint);display:flex;align-items:center;justify-content:center;color:var(--blue);}
.icon-badge svg{width:24px;height:24px;}

/* ---------- entreprise ---------- */
.entreprise-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:start;margin-top:44px;}
.valeurs-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px;}
.valeur-item{display:flex;gap:16px;align-items:flex-start;}
.valeur-item h4{font-size:1rem;margin-bottom:4px;color:var(--ink);}
.valeur-item p{font-size:.9rem;color:var(--slate-soft);}

.stats-card{background:var(--navy);border-radius:var(--radius-md);padding:38px 30px;display:grid;grid-template-columns:1fr 1fr;gap:30px;}
.stat-item{text-align:left;}
.stat-number{display:block;font-family:var(--font-title);font-size:2.1rem;font-weight:700;color:#fff;}
.stat-label{font-size:.82rem;color:#aab3cc;margin-top:4px;display:block;}

/* ---------- prestations ---------- */
.prestations-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.prestation-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);padding:32px 28px;transition:.25s ease;box-shadow:var(--shadow-card);}
.prestation-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:#d3d7ff;}
.prestation-card .icon-badge{margin-bottom:18px;}
.prestation-card h3{font-size:1.1rem;margin-bottom:10px;}
.prestation-card p{font-size:.92rem;margin-bottom:18px;}
.prestation-card a{color:var(--blue);text-decoration:none;font-weight:600;font-size:.87rem;}
.prestation-card a:hover{text-decoration:underline;}

/* ---------- contact ---------- */
.contact-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;margin-top:44px;align-items:start;}
.contact-info-card{background:var(--navy);border-radius:var(--radius-md);padding:36px;}
.contact-info-item{display:flex;gap:16px;margin-bottom:26px;}
.contact-info-item:last-child{margin-bottom:0;}
.contact-info-item .icon-badge{background:rgba(255,255,255,.08);color:#fff;width:42px;height:42px;border-radius:10px;}
.contact-info-item .icon-badge svg{width:20px;height:20px;}
.contact-info-item h4{font-size:.92rem;margin-bottom:4px;color:#fff;}
.contact-info-item p{font-size:.9rem;color:#aab3cc;margin:0;}
.contact-info-item a{color:#aab3cc;text-decoration:none;}
.contact-info-item a:hover{color:#fff;text-decoration:underline;}

.contact-form{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);padding:38px;box-shadow:var(--shadow-card);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.form-row .form-group{margin-bottom:0;}
.form-group label{font-size:.84rem;color:var(--ink);font-weight:600;}
.form-group input,.form-group select,.form-group textarea{background:var(--mist);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;color:var(--ink);font-family:var(--font-text);font-size:.95rem;outline:none;transition:.15s;}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--slate-soft);}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--blue);background:#fff;}
.form-group textarea{resize:vertical;min-height:110px;font-family:var(--font-text);}
.form-success{display:none;align-items:center;gap:12px;background:#eafaf0;border:1px solid #b9ecc9;border-radius:var(--radius-sm);padding:22px;color:#1c7a3f;font-size:.95rem;}

/* ---------- bandeau d'appel à l'action ---------- */
.cta-band{padding:70px 0;background:var(--navy);text-align:center;}
.cta-band .eyebrow{color:#8fa0ff;}
.cta-band h2{color:#fff;}
.cta-band p{max-width:520px;margin:0 auto 26px;color:#aab3cc;}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-band .btn-secondary{color:#fff;border-color:rgba(255,255,255,.3);}
.cta-band .btn-secondary:hover{border-color:#fff;}

/* ---------- footer ---------- */
footer{background:var(--navy);padding:56px 0 28px;color:#aab3cc;}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand p{margin-top:12px;font-size:.88rem;color:#aab3cc;max-width:260px;}
.footer-links-col h5{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px;}
.footer-links-col{display:flex;flex-direction:column;gap:10px;}
.footer-links-col a{color:#aab3cc;text-decoration:none;font-size:.9rem;}
.footer-links-col a:hover{color:#fff;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:24px;font-size:.82rem;color:#7c88ab;}
.footer-bottom a{color:#7c88ab;text-decoration:none;}
.footer-bottom a:hover{color:#fff;}
.footer-bottom-links{display:flex;gap:22px;flex-wrap:wrap;}

/* ---------- réalisations ---------- */
.realisation-intro{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}
.realisation-intro span{background:var(--blue-tint);color:var(--blue-deep);font-size:.82rem;font-weight:600;padding:8px 16px;border-radius:100px;}
.realisations-list{margin-top:20px;}
.realisation{padding:44px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:start;}
.realisation:first-child{padding-top:0;}
.realisation:last-child{border-bottom:none;}
.realisation-tag{display:inline-block;background:var(--blue-tint);color:var(--blue-deep);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:4px 10px;border-radius:100px;margin-bottom:12px;}
.realisation h3{font-size:1.35rem;margin-bottom:4px;}
.realisation-loc{color:var(--slate-soft);font-size:.88rem;display:block;margin-bottom:14px;}
.realisation-text p{font-size:.95rem;}
.realisation-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.gallery-thumb{border:none;padding:0;margin:0;cursor:pointer;border-radius:8px;overflow:hidden;aspect-ratio:4/3;background:var(--mist);display:block;width:100%;}
.gallery-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:.25s ease;}
.gallery-thumb:hover img{transform:scale(1.06);}

.lightbox{display:none;position:fixed;inset:0;background:rgba(6,10,24,.94);z-index:2000;align-items:center;justify-content:center;padding:32px;}
.lightbox.open{display:flex;}
.lightbox img{max-width:88vw;max-height:82vh;border-radius:6px;object-fit:contain;}
.lightbox-close{position:absolute;top:22px;right:26px;background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;line-height:1;}
.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.12);border:none;color:#fff;font-size:1.6rem;width:46px;height:46px;border-radius:50%;cursor:pointer;}
.lightbox-prev{left:18px;}
.lightbox-next{right:18px;}
.lightbox-prev:hover,.lightbox-next:hover{background:rgba(255,255,255,.25);}
.lightbox-count{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:#aab3cc;font-size:.85rem;}

/* ---------- responsive ---------- */
@media(max-width:968px){
  nav.main-nav,.header-actions{display:none;}
  .burger{display:block;}
  .entreprise-layout,.contact-layout{grid-template-columns:1fr;}
  .prestations-grid{grid-template-columns:1fr 1fr;}
  .util-item.util-hide-mobile{display:none;}
  .realisation{grid-template-columns:1fr;gap:20px;}
}
@media(max-width:640px){
  section{padding:64px 0;}
  .prestations-grid,.valeurs-grid,.form-row{grid-template-columns:1fr;}
  .stats-card{grid-template-columns:1fr 1fr;padding:26px 22px;}
  .trust-strip{flex-direction:column;gap:16px;}
  .trust-item{border-right:none;margin-right:0;padding-right:0;border-bottom:1px solid var(--line);padding-bottom:16px;}
  .trust-item:last-child{border-bottom:none;padding-bottom:0;}
  .page-header{padding:44px 0 36px;}
  .footer-inner{flex-direction:column;}
  .realisation-gallery{grid-template-columns:repeat(2,1fr);}
}