/* Layout : site vitrine BTP multi-pages (navigation par ancre), bandeaux pleine largeur, grilles 12 col. qui passent en 1 colonne sur mobile. Fiche chantier = panneau de chantier. */
:root{
  --bg:#F6F7FA; --surface:#FFFFFF; --band:#ECEEF3;
  --ink:#11163A; --muted:#5B6180; --line:#D9DCE6;
  --navy:#16206E; --blue:#2547D0; --cyan:#13A3BE; --amber:#E9A400;
  --on-navy:#FFFFFF; --navy-band:#16206E; --navy-soft:#C9D2FF;
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --wrap:1180px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1124; --surface:#151A33; --band:#11162D; --ink:#E8EAF5; --muted:#A3A9C6; --line:#2A3152;
  --navy:#9FB0FF; --blue:#7C93FF; --cyan:#3CC6DE; --amber:#F2B731; --navy-band:#141B4D; --navy-soft:#C9D2FF; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1124; --surface:#151A33; --band:#11162D; --ink:#E8EAF5; --muted:#A3A9C6; --line:#2A3152;
  --navy:#9FB0FF; --blue:#7C93FF; --cyan:#3CC6DE; --amber:#F2B731; --navy-band:#141B4D; --navy-soft:#C9D2FF; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--surface)}
h1,h2,h3{font-family:var(--f-display);font-stretch:112%;line-height:1.08;margin:0;text-wrap:balance}
p{margin:0}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.eyebrow{font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.lead{font-size:1.125rem;color:var(--muted);max-width:62ch}
.btn{display:inline-flex;align-items:center;gap:.6em;font:600 15px/1 var(--f-body);padding:15px 22px;border-radius:2px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn-primary{background:var(--amber);color:#11163A}
.btn-primary:hover{background:#FFC233}
.btn-ghost{border-color:currentColor;color:inherit;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn .arr{transition:transform .2s}.btn:hover .arr{transform:translateX(3px)}

/* Header */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:40px;width:auto;display:block}
:root[data-theme="dark"] .brand img{background:#fff;padding:4px 8px;border-radius:3px}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand img{background:#fff;padding:4px 8px;border-radius:3px}}
nav.main{display:flex;gap:4px;align-items:center}
nav.main a{font:500 14.5px/1 var(--f-body);text-decoration:none;padding:10px 12px;color:var(--ink);border-bottom:2px solid transparent}
nav.main a:hover{color:var(--blue)}
nav.main a[aria-current="page"]{border-bottom-color:var(--amber);color:var(--navy)}
nav.main a.cta{background:var(--navy-band);color:#fff;border:0;margin-left:8px;padding:12px 16px}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--ink);padding:9px 12px;font:600 14px var(--f-body);border-radius:2px}
@media (max-width:920px){
  .burger{display:block}
  nav.main{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:var(--surface);border-bottom:1px solid var(--line);padding:8px max(16px,env(safe-area-inset-right,0px)) 16px max(16px,env(safe-area-inset-left,0px));display:none}
  nav.main.open{display:flex}
  nav.main a{padding:14px 4px;border-bottom:1px solid var(--line)}
  nav.main a.cta{margin:10px 0 0;text-align:center}
}

/* Hero */
.hero{position:relative;color:#fff;background:#0B1040}
.hero .bgimg{position:absolute;inset:0;background-size:cover;background-position:center 30%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,16,64,.92) 0%,rgba(11,16,64,.72) 45%,rgba(11,16,64,.25) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:clamp(72px,11vw,140px) clamp(56px,8vw,100px)}
.hero h1{font-size:clamp(2.3rem,5.4vw,4.4rem);font-weight:800;max-width:15ch;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:#7FE3F2}
.hero p{margin-top:22px;font-size:1.15rem;max-width:52ch;color:#DCE2FF}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.page-hero{background:var(--navy-band);color:#fff}
.page-hero .wrap{padding-block:64px 56px;display:grid;gap:14px}
.page-hero h1{font-size:clamp(2rem,4.4vw,3.3rem);font-weight:800}
.page-hero p{color:#CFD6FA;max-width:64ch;font-size:1.1rem}
.page-hero .eyebrow{color:#7FE3F2}

/* Sections */
section.blk{padding-block:clamp(56px,8vw,96px)}
section.alt{background:var(--band)}
.sec-head{display:grid;gap:14px;margin-bottom:40px;max-width:760px}
.sec-head h2{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:700;color:var(--navy)}

/* Key figures */
.figs{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.fig{padding:28px 24px;border-left:1px solid var(--line);display:grid;gap:6px;align-content:start}
.fig:first-child{border-left:0}
.fig b{font:800 clamp(2rem,3.6vw,2.8rem)/1 var(--f-display);font-stretch:112%;color:var(--navy);font-variant-numeric:tabular-nums}
.fig span{color:var(--muted);font-size:.95rem;line-height:1.4}
@media (max-width:760px){.figs{grid-template-columns:1fr 1fr}.fig:nth-child(3){border-left:0}.fig:nth-child(n+3){border-top:1px solid var(--line)}}

/* Métiers */
.metiers{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metier{background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;text-decoration:none;transition:transform .25s,box-shadow .25s}
.metier:hover{transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(17,22,58,.45)}
.metier .ph{aspect-ratio:4/3;background-size:cover;background-position:center;max-width:100%}
.metier .tx{padding:20px 20px 24px;display:grid;gap:8px}
.metier .tag{font:500 11px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.metier.core .tag{color:var(--amber)}
.metier h3{font-size:1.25rem;color:var(--navy)}
.metier p{color:var(--muted);font-size:.95rem}
@media (max-width:980px){.metiers{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.metiers{grid-template-columns:1fr}}

/* Split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.split.rev>:first-child{order:2}
.split .img{aspect-ratio:4/3;background-size:cover;background-position:center;max-width:100%}
.split .txt{display:grid;gap:18px;min-width:0}
.split h2{font-size:clamp(1.6rem,3vw,2.3rem);color:var(--navy)}
.split p{color:var(--muted)}
.checks{display:grid;gap:10px;padding:0;margin:0;list-style:none}
.checks li{padding-left:26px;position:relative}
.checks li::before{content:"";position:absolute;left:0;top:.62em;width:12px;height:2px;background:var(--amber)}
@media (max-width:820px){.split{grid-template-columns:1fr}.split.rev>:first-child{order:0}}

/* Partners */
.partners{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.partner{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:96px;display:grid;place-items:center;padding:16px;text-align:center;font:700 clamp(.95rem,1.6vw,1.15rem)/1.2 var(--f-display);font-stretch:112%;letter-spacing:.04em;color:var(--muted);background:var(--surface)}
.partner small{display:block;font:500 10px/1.4 var(--f-mono);letter-spacing:.1em;margin-top:6px;color:var(--muted);opacity:.8}
.partner.has-logo{background:#fff}
.partner img{max-height:56px;max-width:78%;width:auto;height:auto;object-fit:contain;filter:grayscale(1) contrast(1.35);opacity:.9;transition:filter .25s,opacity .25s}
.partner.has-logo:hover img{filter:none;opacity:1}
@media (max-width:700px){.partners{grid-template-columns:1fr 1fr}.partner img{max-height:44px}}

/* CTA band */
.ctaband{background:var(--navy-band);color:#fff}
.ctaband .wrap{padding-block:56px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ctaband h2{font-size:clamp(1.5rem,2.8vw,2.1rem);max-width:24ch}

/* Réalisations */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters button{font:500 14px/1 var(--f-body);padding:10px 16px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--navy-band);border-color:var(--navy-band);color:#fff}
.grid-real{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:980px){.grid-real{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.grid-real{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;text-decoration:none;color:inherit;min-width:0}
a.card:hover{border-color:var(--blue)}
.card .ph{aspect-ratio:3/2;background-size:cover;background-position:center;position:relative;max-width:100%}
.card .ph.none{background:repeating-linear-gradient(135deg,#16206E 0 14px,#1B2780 14px 28px);display:grid;place-items:center;color:#AFC0FF;font:500 12px var(--f-mono);letter-spacing:.12em;text-transform:uppercase}
.pill{position:absolute;left:12px;top:12px;font:600 11.5px/1 var(--f-body);letter-spacing:.04em;padding:7px 10px;border-radius:2px;background:#fff;color:#11163A}
.pill.live{background:var(--amber);color:#11163A}
.pill.live::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#11163A;margin-right:7px;vertical-align:1px;animation:pulse 1.8s infinite}
@keyframes pulse{50%{opacity:.25}}
.card .bd{padding:18px 20px 22px;display:grid;gap:8px;flex:1;align-content:start}
.card .loc{font:500 12px/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--cyan)}
.card h3{font-size:1.15rem;color:var(--navy)}
.card dl{margin:4px 0 0;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:.9rem}
.card dt{color:var(--muted)}
.card dd{margin:0;font-weight:500}
.card .more{margin-top:auto;padding-top:10px;font-weight:600;font-size:.92rem;color:var(--blue)}

/* Chart */
.chart-card{background:var(--surface);border:1px solid var(--line);padding:24px}
.chart-card svg{width:100%;height:auto;display:block}
.chart-card text{font-family:var(--f-body)}

/* Chantier (panneau) */
.panneau{background:var(--surface);border:1px solid var(--line);border-top:6px solid var(--navy-band)}
.panneau .pc{padding:28px clamp(20px,4vw,48px) 0;font:500 13px/1.3 var(--f-mono);letter-spacing:.16em;color:var(--navy)}
.panneau .hd{padding:14px clamp(20px,4vw,48px) 28px;display:grid;gap:8px}
.panneau h1{font-size:clamp(2.8rem,7vw,5rem);font-weight:800;color:var(--ink)}
.panneau .city{font:500 clamp(1.4rem,3vw,2.1rem)/1.1 var(--f-display);font-stretch:112%;color:var(--navy)}
.panneau .desc{color:var(--muted);font-size:1.1rem}
.panneau .bar{width:64px;height:5px;background:var(--amber);margin-top:10px}
.roles{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.role{padding:22px clamp(20px,4vw,48px);border-bottom:1px solid var(--line);display:grid;gap:4px;min-width:0}
.role:nth-child(odd){border-right:1px solid var(--line)}
.role .k{font:600 12px/1.3 var(--f-body);letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.role .v{font:700 1.3rem/1.2 var(--f-display);font-stretch:112%}
.role .a{color:var(--muted);font-size:.95rem}
.role .chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.chip{border:1.5px solid var(--navy);color:var(--navy);font:600 12.5px/1 var(--f-body);padding:7px 10px;border-radius:3px}
.role.lot{background:var(--band)}
@media (max-width:640px){.roles{grid-template-columns:1fr}.role:nth-child(odd){border-right:0}}
.upd{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:16px clamp(20px,4vw,48px);font:500 12.5px var(--f-mono);color:var(--muted)}
.statusline{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}

/* Jobs */
.jobs{display:grid;gap:12px}
.job{background:var(--surface);border:1px solid var(--line);padding:20px 24px;display:grid;grid-template-columns:1fr auto;gap:8px 24px;align-items:center}
.job h3{font-size:1.15rem;color:var(--navy)}
.job .meta{color:var(--muted);font-size:.92rem}
.job .tags{display:flex;gap:6px;flex-wrap:wrap}
.job .tags span{font:500 12px/1 var(--f-mono);padding:6px 8px;background:var(--band);border-radius:2px}
@media (max-width:600px){.job{grid-template-columns:1fr}}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:clamp(28px,5vw,64px)}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}
.coord{display:grid;gap:22px;align-content:start}
.coord div{display:grid;gap:4px}
.coord .k{font:500 12px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--cyan)}
.coord .v{font-size:1.1rem;font-weight:500;user-select:all}
form.cf{background:var(--surface);border:1px solid var(--line);padding:clamp(20px,3vw,32px);display:grid;grid-template-columns:1fr 1fr;gap:16px}
form.cf .full{grid-column:1/-1}
form.cf label{display:grid;gap:6px;font-weight:500;font-size:.92rem;min-width:0}
form.cf input,form.cf textarea{font:400 16px var(--f-body);padding:12px 14px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:2px;width:100%}
form.cf textarea{min-height:140px;resize:vertical}
form.cf .note{font-size:.82rem;color:var(--muted)}
.ok{grid-column:1/-1;padding:14px 16px;background:var(--band);border-left:3px solid var(--cyan)}
@media (max-width:560px){form.cf{grid-template-columns:1fr}}

/* Legal */
.legal{display:grid;gap:28px;max-width:780px}
.legal h2{font-size:1.3rem;color:var(--navy)}
.legal p,.legal li{color:var(--muted)}
.legal div{display:grid;gap:8px}

/* Footer */
footer{background:#0B1040;color:#C5CBEA}
footer .wrap{padding-block:56px 28px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
footer .logo{background:#fff;padding:8px 12px;display:inline-block;justify-self:start;border-radius:2px}
footer .logo img{height:34px;display:block}
footer h4{font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:#7FE3F2;margin:0 0 14px}
footer a{color:#fff;text-decoration:none}
footer a:hover{text-decoration:underline}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer .legalrow{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.14);padding-top:20px;font-size:.85rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media (max-width:760px){footer .wrap{grid-template-columns:1fr}}

.view{display:none}
.view.on{display:block;animation:fade .35s ease}
@keyframes fade{from{opacity:.4}to{opacity:1}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}