:root{
  --blue:#004AAE;
  --blue-dark:#012F70;
  --blue-deep:#021D45;
  --blue-050:#EEF3FC;
  --blue-100:#DCE7F7;
  --black:#0A0A0A;
  --white:#FFFFFF;
  --steel-600:#4A5568;
  --text-primary:#111417;
  --text-muted:#5C6672;
  --line:#E3E8EF;
  --line-dark:rgba(255,255,255,.14);
  --swiss-red:#D6291F;
  --display: 'Big Shoulders Display', sans-serif;
  --body: 'IBM Plex Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--white);
  color:var(--text-primary);
  font-family:var(--body);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
.wrap{max-width:1180px; margin:0 auto; padding:0 28px;}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--blue);
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{content:''; width:22px; height:1px; background:var(--blue);}
.on-dark .eyebrow{color:#8FB4EA;}
.on-dark .eyebrow::before{background:#8FB4EA;}
h1,h2,h3{font-family:var(--display); font-weight:700; letter-spacing:.01em; text-transform:uppercase; line-height:0.98; color:var(--blue-deep);}
.on-dark h1, .on-dark h2, .on-dark h3{color:var(--white);}

/* ---------- WELD SEAM SIGNATURE DIVIDER ---------- */
.weld-seam{
  width:100%; height:20px;
  background-repeat:repeat-x;
  background-size:34px 20px;
  background-image:
    radial-gradient(circle at 8px 10px, var(--blue) 0 6px, transparent 7px),
    radial-gradient(circle at 25px 10px, var(--black) 0 6px, transparent 7px);
  opacity:.95;
}
.weld-seam.dim{
  background-image:
    radial-gradient(circle at 8px 10px, var(--line) 0 5px, transparent 6px),
    radial-gradient(circle at 25px 10px, var(--line) 0 5px, transparent 6px);
  height:12px; background-size:34px 12px;
}

/* ---------- HEADER ---------- */
header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(255,255,255,.92); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex; align-items:center; justify-content:space-between; padding:12px 28px; gap:24px;}
.logo-mark{height:38px; width:auto;}
.nav-links{display:flex; gap:32px; font-size:14px; font-weight:500; text-transform:uppercase; letter-spacing:.05em; color:var(--blue-deep);}
.nav-links a{opacity:.85; transition:opacity .2s, color .2s;}
.nav-links a:hover, .nav-links a.active{opacity:1; color:var(--blue);}
.nav-contact{display:flex; align-items:center; gap:18px; font-family:var(--mono); font-size:13px; color:var(--blue-deep);}
.nav-contact a:hover{color:var(--blue);}
.burger{display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none;}
.burger span{width:24px; height:2px; background:var(--blue-deep);}

/* ---------- HERO (page d'accueil) ---------- */
.hero{
  position:relative; padding:150px 0 80px; overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:url('../assets/hero.jpg');
  background-size:cover; background-position:center 60%;
}
.hero::before{
  content:''; position:absolute; inset:0;
  background:linear-gradient(100deg, rgba(2,20,48,.94) 0%, rgba(2,29,69,.86) 40%, rgba(2,29,69,.55) 68%, rgba(2,29,69,.3) 100%);
}
.hero-grid{position:relative; z-index:1; display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:center;}
.hero .eyebrow{color:#9FC1F2;}
.hero .eyebrow::before{background:#9FC1F2;}
.hero h1{font-size:clamp(38px,5.6vw,68px); margin:18px 0 22px; color:var(--white);}
.hero h1 em{font-style:normal; color:#6FA6EE;}
.hero p.lead{font-size:17px; color:#C7D5EA; max-width:520px; margin-bottom:34px;}
.cta-row{display:flex; gap:16px; flex-wrap:wrap;}
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:13px; letter-spacing:.06em; text-transform:uppercase;
  padding:15px 26px; border-radius:2px; transition:all .2s;
}
.btn-primary{background:var(--blue); color:var(--white); font-weight:600;}
.btn-primary:hover{background:#1660C9;}
.hero .btn-ghost{border:1px solid rgba(255,255,255,.55); color:var(--white);}
.hero .btn-ghost:hover{border-color:var(--white); background:rgba(255,255,255,.1);}
.hero-diagram{
  position:relative; background:rgba(255,255,255,.08); backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.22); border-radius:6px; padding:24px;
}
.hero-diagram svg{width:100%; height:auto;}
.hero-stats{display:flex; gap:30px; margin-top:48px; padding-top:28px; border-top:1px solid rgba(255,255,255,.22);}
.hero-stats div{font-family:var(--mono);}
.hero-stats b{display:block; font-family:var(--display); font-size:32px; color:var(--white); font-weight:700;}
.hero-stats span{font-size:12px; color:#AEC2DE; text-transform:uppercase; letter-spacing:.05em;}

/* ---------- PAGE HERO (páginas interiores) ---------- */
.page-hero{
  background:var(--blue-deep); color:var(--white);
  padding:150px 0 60px; border-bottom:1px solid var(--line);
}
.page-hero .eyebrow{color:#9FC1F2;}
.page-hero .eyebrow::before{background:#9FC1F2;}
.page-hero h1{font-size:clamp(34px,5vw,56px); margin-top:14px; color:var(--white);}
.page-hero p{color:#C7D5EA; margin-top:16px; max-width:560px; font-size:15.5px;}

section{padding:90px 0;}
.section-head{max-width:640px; margin-bottom:52px;}
.section-head h2{font-size:clamp(30px,4vw,46px); margin-top:14px;}
.section-head p{color:var(--text-muted); margin-top:16px; font-size:15.5px;}

/* ---------- FORCE / PULL QUOTE ---------- */
.force{background:var(--blue-deep); color:var(--white);}
.force blockquote{
  font-family:var(--display); font-weight:600; text-transform:none;
  font-size:clamp(24px,3.4vw,38px); line-height:1.3; max-width:900px; letter-spacing:0; color:var(--white);
}
.force blockquote .mark{color:#6FA6EE;}
.force cite{display:block; margin-top:24px; font-family:var(--mono); font-style:normal; font-size:13px; color:#8FA2C0;}

/* ---------- SERVICES (spec sheet) ---------- */
.spec-list{border-top:1px solid var(--line);}
.spec-row{
  display:grid; grid-template-columns:90px 1fr 1.4fr; gap:24px; align-items:start;
  padding:26px 0; border-bottom:1px solid var(--line);
  transition:background .2s; position:relative;
}
.spec-row::before{
  content:''; position:absolute; left:-28px; top:0; bottom:0; width:3px; background:transparent; transition:background .2s;
}
.spec-row:hover::before{background:var(--blue);}
.spec-row:hover{background:var(--blue-050);}
.spec-code{font-family:var(--mono); color:var(--blue); font-size:14px; padding-top:3px;}
.spec-title{font-family:var(--display); font-size:22px; font-weight:600; text-transform:uppercase; color:var(--blue-deep);}
.spec-desc{color:var(--text-muted); font-size:14.5px; align-self:center;}

/* ---------- TIMELINE / PIPELINE ---------- */
.pipeline{overflow-x:auto; padding-bottom:10px;}
.pipeline-track{
  position:relative; display:flex; min-width:920px; padding-top:20px;
}
.pipeline-track::before{
  content:''; position:absolute; top:31px; left:0; right:0; height:3px;
  background:repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 14px);
}
.pipe-node{flex:1; position:relative; padding-right:20px;}
.pipe-valve{
  width:24px; height:24px; border-radius:50%; background:var(--white); border:3px solid var(--blue);
  position:relative; z-index:2; margin-bottom:20px;
}
.pipe-year{font-family:var(--display); font-size:30px; font-weight:800; color:var(--blue-deep);}
.pipe-node h4{font-family:var(--mono); font-size:12.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--blue); margin:8px 0 10px;}
.pipe-node p{font-size:13.5px; color:var(--text-muted); max-width:190px;}

/* ---------- REFERENCES ---------- */
.ref-grid{display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
.ref-plate{background:var(--blue-050); padding:34px 18px; text-align:center; font-family:var(--mono); font-size:13px; text-transform:uppercase; letter-spacing:.04em; color:var(--blue-deep);}
.ref-note{margin-top:28px; color:var(--text-muted); font-size:14.5px; max-width:600px;}
.ref-note strong{color:var(--text-primary); font-weight:500;}

/* ---------- CERTIFICATIONS (nameplate) ---------- */
.cert-wrap{background:var(--blue-050); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.cert-plate{
  background:var(--white);
  border:1px solid var(--line); border-radius:4px; padding:44px;
  position:relative; display:grid; grid-template-columns:1fr 1fr; gap:40px;
  box-shadow:0 1px 2px rgba(1,47,112,.06);
}
.cert-plate::before,.cert-plate::after,.cert-plate .rivet-tl,.cert-plate .rivet-br{
  content:''; position:absolute; width:9px; height:9px; border-radius:50%;
  background:radial-gradient(circle at 35% 35%, #cfd8e6, #8fa2c0);
}
.cert-plate::before{top:14px; left:14px;}
.cert-plate::after{bottom:14px; right:14px;}
.rivet-tl{top:14px; right:14px;}
.rivet-br{bottom:14px; left:14px;}
.cert-plate h3{font-size:22px; margin-bottom:16px; color:var(--blue-deep);}
.cert-codes{font-family:var(--mono); font-size:14px; color:var(--blue); line-height:2;}
.cert-plate p{color:var(--text-muted); font-size:14.5px; margin-top:16px;}

/* ---------- TEAM ROLES ---------- */
.roles{display:flex; flex-wrap:wrap; gap:14px;}
.role-chip{
  font-family:var(--mono); font-size:13px; text-transform:uppercase; letter-spacing:.04em;
  border:1px solid var(--line); padding:12px 20px; border-radius:2px; color:var(--blue-deep);
}

/* ---------- REALISATIONS GALLERY ---------- */
.gallery{display:grid; grid-template-columns:repeat(4,1fr); gap:4px;}
.gallery figure{
  position:relative; aspect-ratio:1/1; overflow:hidden; cursor:pointer; background:var(--blue-050);
}
.gallery img{width:100%; height:100%; object-fit:cover; transition:transform .4s;}
.gallery figure:hover img{transform:scale(1.07);}
.gallery figure::after{
  content:'+'; position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--display); font-size:34px; color:var(--white);
  background:rgba(1,47,112,0); opacity:0; transition:all .25s;
}
.gallery figure:hover::after{background:rgba(1,47,112,.55); opacity:1;}
.lightbox{
  position:fixed; inset:0; background:rgba(2,29,69,.94); z-index:200;
  display:none; align-items:center; justify-content:center; padding:40px;
}
.lightbox.active{display:flex;}
.lightbox img{max-height:86vh; max-width:90vw; border:1px solid var(--line-dark);}
.lightbox-close{position:absolute; top:28px; right:36px; font-family:var(--mono); font-size:14px; color:var(--white); cursor:pointer; letter-spacing:.05em;}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:70px;}
.field{margin-bottom:20px;}
.field label{display:block; font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.05em; color:var(--text-muted); margin-bottom:8px;}
.field input, .field textarea{
  width:100%; background:var(--white); border:1px solid var(--line); color:var(--text-primary);
  padding:14px 16px; font-family:var(--body); font-size:14.5px; border-radius:2px; resize:vertical;
}
.field input:focus, .field textarea:focus{outline:none; border-color:var(--blue);}
.manifest{border-top:1px solid var(--line);}
.manifest-row{display:grid; grid-template-columns:120px 1fr; gap:20px; padding:22px 0; border-bottom:1px solid var(--line);}
.manifest-row .tag{font-family:var(--mono); font-size:12px; color:var(--blue); text-transform:uppercase; letter-spacing:.05em; padding-top:2px;}
.manifest-row .addr{font-size:14.5px; color:var(--blue-deep);}
.manifest-row .addr span{display:block; color:var(--text-muted); font-size:13px; margin-top:2px;}
.direct-line{margin-top:30px; display:flex; gap:28px; font-family:var(--mono); font-size:14px; color:var(--blue-deep);}
.direct-line a:hover{color:var(--blue);}

/* ---------- SITE CARDS (páginas com mapas por sucursal) ---------- */
.site-cards{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.site-card{border:1px solid var(--line); border-radius:4px; overflow:hidden; background:var(--white);}
.site-card h3{
  font-size:18px; padding:18px 20px; margin:0; background:var(--blue-050);
  border-bottom:1px solid var(--line); color:var(--blue-deep);
}
.site-map{position:relative; width:100%; padding-top:65%; background:var(--blue-050);}
.site-map iframe{position:absolute; inset:0; width:100%; height:100%; border:0; filter:grayscale(.15);}
.site-info{padding:20px;}
.site-addr{font-size:14.5px; color:var(--blue-deep); margin-bottom:10px; line-height:1.4;}
.site-info a{display:inline-block; font-family:var(--mono); font-size:13px; color:var(--blue); margin-bottom:4px;}
.site-info a:hover{color:var(--blue-dark); text-decoration:underline;}
.site-hours{font-size:12.5px; color:var(--text-muted); margin-top:10px; line-height:1.5;}

/* ---------- CLIENT LOGOS ---------- */
.client-logos{display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
.client-logo-slot{
  background:var(--white); aspect-ratio:3/2; display:flex; align-items:center; justify-content:center;
  padding:20px; transition:background .2s;
}
.client-logo-slot img{max-width:100%; max-height:100%; object-fit:contain; filter:grayscale(1); opacity:.6; transition:all .25s;}
.client-logo-slot:hover img{filter:grayscale(0); opacity:1;}
.client-logo-slot.placeholder{
  font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:.04em;
  color:var(--text-muted); border:1px dashed var(--line); text-align:center;
}

/* ---------- CTA BANNER (fim de página) ---------- */
.cta-banner{background:var(--blue-050); border-top:1px solid var(--line);}
.cta-banner .wrap{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:24px;}
.cta-banner h2{font-size:clamp(24px,3vw,34px); margin:0;}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line); padding:56px 0 30px; background:var(--blue-050);}
.footer-grid{display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; margin-bottom:40px;}
footer h5{font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-muted); margin-bottom:16px;}
footer ul{list-style:none;}
footer li{margin-bottom:10px; font-size:14px; color:var(--blue-deep);}
footer li a:hover{color:var(--blue);}
.footer-logo{height:34px; margin-bottom:14px;}
.footer-bottom{display:flex; justify-content:space-between; align-items:center; padding-top:24px; border-top:1px solid var(--line); font-family:var(--mono); font-size:12px; color:var(--text-muted); flex-wrap:wrap; gap:12px;}
.removed-note{
  background:var(--blue-050); border:1px dashed var(--blue); color:var(--blue-deep);
  font-family:var(--mono); font-size:12.5px; padding:14px 18px; border-radius:2px; margin-bottom:40px;
}

@media (max-width:860px){
  .nav-links, .nav-contact{display:none;}
  .burger{display:flex;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-diagram{display:none;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr; gap:26px;}
  .ref-grid{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .spec-row{grid-template-columns:50px 1fr; grid-template-areas:"code title" ". desc";}
  .spec-desc{grid-column:1/-1;}
  .cert-plate{grid-template-columns:1fr;}
  .cta-banner .wrap{flex-direction:column; align-items:flex-start;}
  .site-cards{grid-template-columns:1fr;}
  .client-logos{grid-template-columns:repeat(2,1fr);}
}