/* ===== AT2M — Style partagé (version claire) ===== */
:root{
  --blue:#1c6fc4;
  --blue-dark:#0c3f6e;
  --blue-light:#eaf2fb;
  --ink:#12161c;
  --dim:#5c6773;
  --line:#e3e7ec;
  --bg:#ffffff;
  --bg-2:#f6f8fa;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Montserrat',sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px;}
h1,h2,h3{font-weight:800;letter-spacing:-0.01em;}

.fade{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.fade.visible{opacity:1;transform:translateY(0);}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;padding:14px 32px;max-width:1180px;margin:0 auto;}
.logo-header-img{height:46px;width:auto;}
nav{display:flex;gap:26px;font-size:14px;font-weight:600;}
nav a{color:var(--dim);position:relative;padding-bottom:2px;}
nav a:hover, nav a.active{color:var(--ink);}
nav a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--blue);transition:width .2s;}
nav a:hover::after, nav a.active::after{width:100%;}
.header-right{display:flex;align-items:center;gap:14px;}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px;color:var(--ink);}
.menu-toggle svg{display:block;width:24px;height:24px;}
.btn-cta{background:var(--blue);color:#fff;padding:11px 22px;border-radius:8px;font-weight:700;font-size:13.5px;transition:background .15s, transform .15s;display:inline-block;}
.btn-cta:hover{background:var(--blue-dark);transform:translateY(-1px);}
.btn-outline{border:1.5px solid var(--line);color:var(--ink);padding:9.5px 20px;border-radius:8px;font-weight:600;font-size:13.5px;transition:border-color .15s,color .15s;display:inline-block;}
.btn-outline:hover{border-color:var(--blue);color:var(--blue);}

/* page hero (used on every inner page) */
.page-hero{padding:52px 0 40px;background:linear-gradient(180deg,var(--blue-light) 0%,var(--bg) 100%);border-bottom:1px solid var(--line);}
.breadcrumb{font-size:12.5px;color:var(--dim);margin-bottom:14px;font-weight:600;}
.breadcrumb a{color:var(--dim);}
.breadcrumb a:hover{color:var(--blue);}
h1.page-title{font-size:38px;line-height:1.1;margin-bottom:12px;}
.page-lead{color:var(--dim);font-size:16px;max-width:640px;}

/* hero (homepage) */
.hero{padding:64px 0 50px;background:linear-gradient(180deg,var(--blue-light) 0%,var(--bg) 100%);}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:50px;align-items:center;}
.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:100px;padding:7px 16px;font-size:12.5px;font-weight:700;color:var(--blue-dark);margin-bottom:20px;}
.badge-dot{width:7px;height:7px;border-radius:50%;background:var(--blue);}
h1.h-title{font-size:44px;line-height:1.1;margin-bottom:18px;}
.hero p.lead{color:var(--dim);font-size:16.5px;max-width:480px;margin-bottom:28px;}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;}
.hero-visual{background:var(--ink);border-radius:16px;height:320px;position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:20px;}
.hero-visual::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--blue) 0%,transparent 60%);opacity:.5;}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
.hero-visual span{position:relative;z-index:1;color:#fff;font-size:13px;font-weight:600;background:rgba(0,0,0,0.45);padding:6px 12px;border-radius:6px;}

section{padding:64px 0;}
.eyebrow{color:var(--blue);font-weight:700;font-size:12.5px;letter-spacing:0.06em;text-transform:uppercase;margin-bottom:12px;}
h2.s-title{font-size:30px;margin-bottom:14px;}
.s-sub{color:var(--dim);font-size:15.5px;max-width:560px;margin-bottom:36px;}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center;transition:transform .15s;}
.stat-card:hover{transform:translateY(-3px);}
.stat-card .n{font-size:26px;font-weight:800;color:var(--blue);}
.stat-card .l{font-size:12px;color:var(--dim);margin-top:4px;}

/* bureau d'etude dark card */
.be-section{background:var(--ink);color:#fff;border-radius:24px;padding:56px 48px;}
.be-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.be-section h2{color:#fff;font-size:30px;margin-bottom:16px;}
.be-section p{color:#b7bfc9;font-size:15px;margin-bottom:14px;}
.be-visual{border-radius:16px;height:280px;overflow:hidden;position:relative;}
.be-visual img{width:100%;height:100%;object-fit:cover;}

/* process steps */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;}
.process-step{background:#fff;padding:28px 22px;}
.process-num{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:0.06em;margin-bottom:10px;}
.process-step h3{font-size:16px;margin-bottom:8px;}
.process-step p{font-size:13px;color:var(--dim);}

/* services cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.card{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:26px;transition:transform .2s, box-shadow .2s, border-color .2s;}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(28,111,196,0.12);border-color:var(--blue);}
.card-icon{width:40px;height:40px;background:var(--blue-light);border-radius:10px;margin-bottom:14px;display:flex;align-items:center;justify-content:center;color:var(--blue);padding:9px;}
.card-icon svg{width:100%;height:100%;}
.card h3{font-size:17px;margin-bottom:8px;}
.card p{font-size:13.5px;color:var(--dim);margin-bottom:12px;}
.card a{font-size:13px;font-weight:700;color:var(--blue);}

/* about */
.about-section{background:var(--bg-2);}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start;}
.about-grid p{color:var(--dim);font-size:15px;margin-bottom:14px;}
.contact-info-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;}
.info-row{display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px;}
.info-row:last-child{border-bottom:none;}
.info-row span:first-child{color:var(--dim);}
.value-row{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:14.5px;}
.value-row::before{content:"✓";color:var(--blue);font-weight:800;}

/* recrutement */
.recrut-card{background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);border-radius:20px;padding:56px 40px;color:#fff;text-align:center;}
.recrut-card h2{color:#fff;font-size:30px;margin-bottom:12px;}
.recrut-card p{opacity:.92;max-width:560px;margin:0 auto 26px;font-size:15px;}
.btn-white{background:#fff;color:var(--blue-dark);padding:13px 28px;border-radius:8px;font-weight:700;font-size:14px;display:inline-block;transition:transform .15s;}
.btn-white:hover{transform:translateY(-2px);}
.poste-row{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:24px;}
.poste-chip{background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.3);border-radius:100px;padding:8px 16px;font-size:13px;font-weight:600;}
.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.benefit-card{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:24px;text-align:center;}
.benefit-card h3{font-size:15.5px;margin-bottom:8px;}
.benefit-card p{font-size:13px;color:var(--dim);}

/* sectors */
.sector-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.sector-card{border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff;transition:border-color .15s;}
.sector-card:hover{border-color:var(--blue);}
.sector-card h3{font-size:15.5px;margin-bottom:6px;}
.sector-card p{font-size:13px;color:var(--dim);}

/* gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.g-item{aspect-ratio:1;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;display:flex;align-items:flex-end;padding:14px;overflow:hidden;position:relative;transition:transform .3s ease;}
.g-item:hover{transform:scale(1.03);}
.g-item img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.g-tag{font-size:12px;font-weight:700;color:#fff;background:rgba(0,0,0,0.55);padding:3px 8px;border-radius:5px;position:relative;z-index:1;}
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px;}
.filter-chip{border:1px solid var(--line);border-radius:100px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--dim);}
.filter-chip.active{background:var(--ink);color:#fff;border-color:var(--ink);}

/* cta banner */
.cta-banner{background:var(--blue);border-radius:20px;padding:54px 48px;text-align:center;color:#fff;}
.cta-banner h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-banner p{opacity:.92;margin-bottom:24px;font-size:15px;}

/* contact form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--dim);font-weight:600;margin-bottom:6px;}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;padding:12px 14px;font-family:'Montserrat';font-size:14px;color:var(--ink);transition:border-color .15s;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);}
.field textarea{min-height:110px;resize:vertical;}
.phone-row{display:flex;gap:8px;}
.phone-row select{max-width:90px;flex-shrink:0;}
.map-box{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;height:200px;margin-top:16px;display:flex;align-items:center;justify-content:center;color:var(--dim);font-size:12.5px;font-weight:600;}

/* footer */
footer{background:var(--ink);color:#c6ccd4;padding:56px 0 26px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;margin-bottom:40px;}
.footer-top .footer-heading{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:16px;font-weight:700;}
.footer-top a{display:block;margin-bottom:9px;color:#a6adb6;font-size:13.5px;transition:color .15s;}
.footer-top a:hover{color:#fff;}
.footer-map{background:#1d232c;border-radius:12px;height:130px;margin-bottom:14px;display:flex;align-items:center;justify-content:center;color:#889099;font-size:12px;}
.social-row{display:flex;gap:10px;margin-top:12px;}
.social-dot{position:relative;width:36px;height:36px;border-radius:50%;background:#1d232c;display:inline-block;transition:background .15s;text-decoration:none;flex-shrink:0;}
.social-dot:hover{background:var(--blue);}
.social-dot svg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:16px;height:16px;display:block;}
.footer-bottom{border-top:1px solid #262c35;padding-top:22px;display:flex;justify-content:space-between;font-size:12.5px;color:#8890a0;flex-wrap:wrap;gap:10px;}
.footer-bottom a{color:#8890a0;}
.footer-bottom a:hover{color:#fff;}

@media(max-width:860px){
  .hero-grid{grid-template-columns:1fr;}
  h1.h-title{font-size:32px;}
  h1.page-title{font-size:28px;}
  .be-grid{grid-template-columns:1fr;}
  .be-section{padding:36px 24px;}
  .card-grid{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;}
  .sector-grid{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
  .cta-banner{padding:40px 24px;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .process-grid{grid-template-columns:1fr;}
  .benefit-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  nav{display:none;}
  nav.nav-open{
    display:flex;
    flex-direction:column;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:#fff;
    border:1px solid var(--line);
    border-top:none;
    padding:8px 24px 14px;
    gap:0;
    box-shadow:0 16px 30px rgba(0,0,0,0.1);
    border-radius:0 0 12px 12px;
  }
  nav.nav-open a{padding:13px 0;border-bottom:1px solid var(--line);}
  nav.nav-open a:last-child{border-bottom:none;}
  .menu-toggle{display:block;}
  body{padding-bottom:76px;}
  .sticky-cta{display:flex;}
}

/* sticky mobile CTA */
.sticky-cta{display:none;position:fixed;left:16px;right:16px;bottom:16px;z-index:60;justify-content:center;}
.sticky-cta .btn-cta{width:100%;text-align:center;box-shadow:0 8px 24px rgba(12,63,110,0.35);}

/* avis clients */
.review-badge{display:inline-flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:100px;padding:10px 18px;font-size:14px;font-weight:700;}
.review-stars{color:#e8a13b;letter-spacing:1px;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;}
.faq-item h3{font-size:15px;margin-bottom:8px;color:var(--ink);}
.faq-item p{font-size:13.5px;color:var(--dim);}

/* itineraire link */
.itineraire-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--blue);margin-top:10px;}