:root{
  --navy:#062a5c; --blue:#0b5ed7; --sky:#3fa9ff; --ice:#eaf4ff;
  --sun:#ffcb05; --sun-2:#ffe066; --ink:#0d1b2e; --muted:#5b6b82; --white:#fff;
  --r:22px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Poppins,system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.6;overflow-x:hidden}
h1,h2,h3,h4,.display{font-family:"Bricolage Grotesque",Poppins,sans-serif;line-height:1.05;letter-spacing:-.02em}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1180px,92vw);margin-inline:auto}
.btn{display:inline-flex;align-items:center;gap:.6em;font-weight:600;border-radius:999px;padding:.95em 1.6em;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:0;font-family:inherit;font-size:1rem}
.btn:hover{transform:translateY(-2px)}
.btn-sun{background:var(--sun);color:var(--navy);box-shadow:0 10px 30px -10px rgba(255,203,5,.8)}
.btn-sun:hover{background:var(--sun-2)}
.btn-ghost{border:2px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.tag{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);background:var(--ice);padding:.45em 1em;border-radius:999px}

/* top bar */
.topbar{background:var(--navy);color:#cfe3ff;font-size:.85rem}
.topbar .wrap{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;flex-wrap:wrap}
.topbar i{color:var(--sun);margin-right:.35em}
.topbar b{color:var(--sun)}

/* nav + logo */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid #e6eef9}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;padding:.8rem 0}
.logo{display:flex;align-items:center;gap:.7rem}
.logo-ic{width:48px;height:48px;border-radius:14px;background:var(--blue);display:grid;place-items:center;position:relative;flex:0 0 48px}
.logo-ic i{color:var(--sun);font-size:1.45rem}
.logo-ic::after{content:"";position:absolute;right:-4px;bottom:-4px;width:16px;height:16px;border-radius:50%;background:var(--sun);border:3px solid #fff}
.logo-txt{font-family:"Bricolage Grotesque",Poppins,sans-serif;font-weight:800;font-size:1.4rem;color:var(--navy);line-height:1;letter-spacing:.02em}
.logo-txt small{display:block;font-family:Poppins;font-weight:600;font-size:.62rem;letter-spacing:.3em;color:var(--blue);margin-top:5px}
footer .logo-txt{color:#fff}
footer .logo-txt small{color:var(--sun)}
nav ul{display:flex;gap:2rem;list-style:none;font-weight:500;font-size:.95rem}
nav a:hover{color:var(--blue)}
nav a.on{color:var(--blue);position:relative}
nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:3px;background:var(--sun)}
.burger{display:none;background:none;border:0;font-size:1.6rem;color:var(--navy);cursor:pointer}

/* hero */
.hero{position:relative;color:#fff;min-height:88vh;display:flex;align-items:center;overflow:hidden;background:var(--navy)}
.hero-bg{position:absolute;inset:0;background:url(img/apres.jpg) center 35%/cover}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(105deg,rgba(6,42,92,.96) 0%,rgba(11,94,215,.82) 48%,rgba(11,94,215,.25) 100%)}
.hero .wrap{position:relative;z-index:2;padding:5rem 0 7rem}
.hero .since{display:inline-flex;align-items:center;gap:.6rem;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:.45em 1.1em;border-radius:999px;font-size:.9rem;margin-bottom:1.6rem}
.hero .since i{color:var(--sun)}
.hero h1{font-size:clamp(2.6rem,6.4vw,5.2rem);font-weight:800;max-width:14ch}
.hero h1 em{font-style:normal;color:var(--sun);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.14em;background:var(--sun);opacity:.35;border-radius:4px}
.hero p.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);max-width:42ch;margin:1.4rem 0 2.2rem;color:#dcebff}
.hero .ctas{display:flex;gap:1rem;flex-wrap:wrap}
.wave{position:absolute;bottom:-1px;left:0;width:100%;z-index:3}

/* stats */
.stats{position:relative;z-index:5;margin-top:-4.2rem}
.stats .grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--r);box-shadow:0 30px 60px -25px rgba(6,42,92,.35);overflow:hidden}
.stat{padding:1.8rem 1.4rem;text-align:center;border-right:1px solid #edf2fa}
.stat:last-child{border-right:0}
.stat i{font-size:1.5rem;color:var(--sun);margin:0 auto .6rem;display:block;text-align:center}
.stat b{display:block;font-family:"Bricolage Grotesque",Poppins,sans-serif;font-size:1.6rem;font-weight:800;color:var(--blue);line-height:1.1}
.stat span{font-size:.88rem;color:var(--muted)}

/* sections */
section{padding:6.5rem 0}
.head{max-width:680px;margin-bottom:3rem}
.head h2{font-size:clamp(2rem,4vw,3.2rem);font-weight:800;color:var(--navy);margin:.9rem 0 .8rem}
.head p{color:var(--muted);font-size:1.05rem}
.center{text-align:center;margin-inline:auto}

/* services */
.services .grid{display:grid;grid-template-columns:1fr 1fr;gap:1.8rem}
.svc{border-radius:28px;overflow:hidden;background:var(--ice);display:flex;flex-direction:column;transition:transform .3s}
.svc:hover{transform:translateY(-6px)}
.svc .ph{height:260px;background-size:cover;background-position:center;position:relative}
.svc .ph .num{position:absolute;top:1.2rem;left:1.2rem;background:var(--sun);color:var(--navy);font-size:1.3rem;width:56px;height:56px;border-radius:16px;display:grid;place-items:center}
.svc .body{padding:2rem 2.2rem 2.4rem}
.svc h3{font-size:1.9rem;color:var(--navy);margin-bottom:1.2rem}
.svc ul{list-style:none;display:grid;gap:.7rem}
.svc li{display:flex;gap:.8rem;align-items:center;font-weight:500}
.svc li i{flex:0 0 24px;height:24px;border-radius:7px;background:var(--blue);color:var(--sun);display:grid;place-items:center;font-size:.7rem}
.svc.dark{background:var(--navy);color:#fff}
.svc.dark h3{color:#fff}
.svc.dark li i{background:var(--sun);color:var(--navy)}
.more{display:inline-flex;align-items:center;gap:.4em;margin-top:1.4rem;font-weight:600;color:var(--blue)}
.more:hover{text-decoration:underline}
.svc.dark .more{color:var(--sun)}

/* étapes chantier */
.chantier{background:linear-gradient(180deg,#f5f9ff,#fff)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1.1rem}
.step{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:3/4.3;background:#000;cursor:zoom-in}
.step img{width:100%;height:100%;object-fit:cover;transition:transform .5s,opacity .3s;opacity:.92}
.step:hover img{transform:scale(1.06);opacity:1}
.step .cap{position:absolute;inset:auto 0 0 0;padding:1.1rem 1rem 1rem;color:#fff;background:linear-gradient(transparent,rgba(6,42,92,.95))}
.step .cap b{display:inline-block;background:var(--sun);color:var(--navy);font-size:.72rem;font-weight:700;padding:.2em .7em;border-radius:999px;margin-bottom:.4rem;letter-spacing:.06em}
.step .cap h4{font-size:1.15rem}
.step.after{outline:4px solid var(--sun);outline-offset:-4px}

/* pourquoi */
.why .grid{display:grid;grid-template-columns:1.05fr 1fr;gap:4rem;align-items:center}
.why .pic{position:relative}
.why .pic img{border-radius:28px;aspect-ratio:4/5;object-fit:cover;width:100%}
.why .badge{position:absolute;right:-1.2rem;bottom:2rem;background:var(--sun);color:var(--navy);border-radius:24px;padding:1.4rem 1.6rem;box-shadow:0 20px 40px -15px rgba(0,0,0,.35);transform:rotate(-3deg)}
.why .badge b{font-family:"Bricolage Grotesque",Poppins,sans-serif;font-size:2.8rem;display:block;line-height:1}
.why .badge span{font-weight:600;font-size:.9rem}
.feats{display:grid;gap:1.3rem;margin-top:2rem}
.feat{display:flex;gap:1.1rem;align-items:flex-start;padding:1.2rem;border-radius:18px;transition:background .2s}
.feat:hover{background:var(--ice)}
.feat .ic{flex:0 0 54px;height:54px;border-radius:16px;background:var(--blue);color:var(--sun);display:grid;place-items:center;font-size:1.3rem}
.feat h4{font-size:1.2rem;color:var(--navy)}
.feat p{color:var(--muted);font-size:.95rem}

/* bandeau */
.band{background:var(--sun);padding:3.2rem 0;position:relative;overflow:hidden}
.band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;border:40px solid rgba(6,42,92,.08)}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap;position:relative;z-index:1}
.band h3{font-size:clamp(1.6rem,3vw,2.4rem);color:var(--navy);font-weight:800}
.band p{color:var(--navy);opacity:.85;font-weight:500;max-width:52ch}
.band .btn{background:var(--navy);color:#fff}

/* zone */
.zone{background:#f5f9ff}
.zone .grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.chips{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.6rem 0}
.chip{background:#fff;color:var(--navy);font-weight:600;padding:.7em 1.3em;border-radius:999px;display:flex;align-items:center;gap:.5rem;border:1px solid #dbe8f8}
.chip i{color:var(--blue)}
.chip.home{background:var(--navy);color:#fff;border-color:var(--navy)}
.chip.home i{color:var(--sun)}
.gmap{width:100%;height:380px;border:0;border-radius:28px;box-shadow:0 30px 60px -30px rgba(6,42,92,.4)}

/* contact */
.contact{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;left:-150px;bottom:-150px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(63,169,255,.35),transparent 70%)}
.contact .grid{display:grid;grid-template-columns:1fr 1.1fr;gap:3.5rem;position:relative}
.contact .head h2{color:#fff}
.contact .head p{color:#bcd5f5}
.info{display:grid;gap:1.2rem}
.info>div{display:flex;gap:1rem;align-items:center}
.info .ic{flex:0 0 48px;height:48px;border-radius:14px;background:rgba(255,203,5,.15);color:var(--sun);display:grid;place-items:center;font-size:1.15rem}
.info small{display:block;color:#9fbde6;font-size:.8rem}
.info strong{font-weight:600}
.info .wa{color:var(--sun);font-size:.9rem}
form{background:#fff;color:var(--ink);border-radius:28px;padding:2.2rem;display:grid;gap:1rem;grid-template-columns:1fr 1fr}
form h3{grid-column:1/-1;font-size:1.6rem;color:var(--navy)}
form label{font-size:.82rem;font-weight:600;color:var(--muted);display:grid;gap:.35rem}
form .full{grid-column:1/-1}
input,select,textarea{font:inherit;padding:.85em 1em;border:2px solid #e3ecf8;border-radius:14px;background:#f8fbff;color:var(--ink);transition:border .2s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--blue);background:#fff}
textarea{min-height:110px;resize:vertical}
form .btn{justify-content:center;grid-column:1/-1}
.ok{display:none;grid-column:1/-1;background:var(--ice);color:var(--navy);padding:1rem 1.2rem;border-radius:14px;font-weight:500}

/* pages internes */
.page-hero{position:relative;color:#fff;background:var(--navy);overflow:hidden;padding:5.5rem 0 7rem}
.page-hero .bg{position:absolute;inset:0;background-size:cover;background-position:center}
.page-hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(105deg,rgba(6,42,92,.96),rgba(11,94,215,.75))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero .crumb{font-size:.85rem;color:#bcd5f5;margin-bottom:1rem}
.page-hero .crumb a{color:var(--sun)}
.page-hero h1{font-size:clamp(2.4rem,5.5vw,4.4rem);font-weight:800;max-width:16ch}
.page-hero h1 em{font-style:normal;color:var(--sun)}
.page-hero p{max-width:52ch;margin-top:1.1rem;color:#dcebff;font-size:1.1rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.cards.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--ice);border-radius:24px;padding:2rem;transition:transform .25s,background .25s}
.card:hover{transform:translateY(-5px);background:#dfeeff}
.card .ic{width:56px;height:56px;border-radius:16px;background:var(--blue);color:var(--sun);display:grid;place-items:center;margin-bottom:1.2rem;font-size:1.35rem}
.card h3{font-size:1.35rem;color:var(--navy);margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.95rem}
.card.hl{background:var(--navy)}.card.hl h3{color:#fff}.card.hl p{color:#bcd5f5}.card.hl .ic{background:var(--sun);color:var(--navy)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.split img{border-radius:28px;aspect-ratio:4/5;object-fit:cover;width:100%}
.list{list-style:none;display:grid;gap:1rem;margin-top:1.5rem}
.list li{display:flex;gap:1rem;align-items:flex-start}
.list li b{flex:0 0 40px;height:40px;border-radius:12px;background:var(--sun);color:var(--navy);display:grid;place-items:center;font-weight:800}
.list li strong{display:block;color:var(--navy)}
.list li span{color:var(--muted);font-size:.95rem}
.light{background:#f5f9ff}

/* galerie */
.filters{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:2rem}
.filters button{font:inherit;font-weight:600;border:2px solid var(--ice);background:#fff;color:var(--navy);padding:.6em 1.3em;border-radius:999px;cursor:pointer}
.filters button i{margin-right:.4em;color:var(--blue)}
.filters button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.filters button.on i{color:var(--sun)}
.gallery{columns:3 280px;column-gap:1.1rem}
.g-item{break-inside:avoid;margin:0 0 1.1rem;border-radius:20px;overflow:hidden;position:relative;cursor:zoom-in;background:var(--ice)}
.g-item img{width:100%;transition:transform .5s}
.g-item:hover img{transform:scale(1.04)}
.g-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:2rem 1rem .9rem;color:#fff;font-weight:600;font-size:.92rem;background:linear-gradient(transparent,rgba(6,42,92,.9))}
.g-item.hide{display:none}
.g-empty{display:none;text-align:center;color:var(--muted);padding:2rem;background:var(--ice);border-radius:20px}

/* footer */
footer{background:#041d40;color:#8fa9cc;padding:3.5rem 0 1.5rem;font-size:.9rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:2rem}
footer p{margin-top:1rem;max-width:34ch}
footer h5{color:#fff;font-size:1rem;margin-bottom:.8rem}
footer ul{list-style:none}
footer li{padding:.25rem 0}
footer li i{color:var(--sun);width:1.4em}
footer a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.08);margin-top:2.5rem;padding-top:1.2rem;font-size:.8rem}

/* bouton flottant */
.fab{position:fixed;right:1.2rem;bottom:1.2rem;z-index:60;background:var(--sun);color:var(--navy);border-radius:999px;padding:.9rem 1.3rem;font-weight:700;display:flex;gap:.5rem;align-items:center;box-shadow:0 12px 30px -8px rgba(6,42,92,.5)}

/* visionneuse */
.lb{position:fixed;inset:0;background:rgba(4,20,45,.92);z-index:100;display:none;place-items:center;padding:2rem;cursor:zoom-out}
.lb.on{display:grid}
.lb img{max-height:88vh;border-radius:16px}
.lb .nav{position:fixed;top:50%;transform:translateY(-50%);background:var(--sun);color:var(--navy);border:0;width:52px;height:52px;border-radius:50%;font-size:1.1rem;cursor:pointer}
.lb .prev{left:1rem}.lb .next{right:1rem}
.lb p{position:fixed;bottom:1.2rem;left:0;right:0;text-align:center;color:#fff;font-weight:500}

/* apparition */
.js .rv{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.js .rv.in{opacity:1;transform:none}

@media (max-width:980px){
  nav ul{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:1.2rem 4vw;gap:1rem;border-bottom:1px solid #e6eef9}
  nav ul.open{display:flex}
  .burger{display:block}
  .desk{display:none!important}
  .stats .grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid #edf2fa}
  .services .grid,.why .grid,.zone .grid,.contact .grid,.split,.fgrid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step.after{grid-column:1/-1;aspect-ratio:16/10}
  .why .badge{right:1rem}
  .split{gap:2rem}
  section{padding:4.5rem 0}
}
@media (max-width:600px){
  form,.cards,.cards.two{grid-template-columns:1fr}
  form{padding:1.5rem}
  .topbar .zones{display:none}
  .hero{min-height:auto}
  .stat{padding:1.4rem .8rem}
  .stat b{font-size:1.3rem}
  .fab span{display:none}
}

/* comparateur avant / après */
.cmp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.cmp{position:relative;aspect-ratio:4/5;border-radius:24px;overflow:hidden;margin:0;user-select:none;box-shadow:0 25px 50px -25px rgba(6,42,92,.45)}
.cmp>img,.cmp-before img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cmp-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--p)) 0 0)}
.cmp input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0;z-index:4}
.cmp .handle{position:absolute;top:0;bottom:0;left:var(--p);width:3px;background:#fff;transform:translateX(-50%);z-index:3;pointer-events:none}
.cmp .handle i{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;background:var(--sun);color:var(--navy);display:grid;place-items:center;box-shadow:0 6px 18px rgba(0,0,0,.3)}
.cmp .lbl{position:absolute;top:1rem;z-index:2;background:rgba(6,42,92,.85);color:#fff;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:.3em .8em;border-radius:999px;pointer-events:none}
.cmp .lbl.l{left:1rem}.cmp .lbl.r{right:1rem;background:var(--sun);color:var(--navy)}
.cmp figcaption{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:2rem 1.2rem 1rem;color:#fff;font-weight:600;background:linear-gradient(transparent,rgba(6,42,92,.9));pointer-events:none}
@media (max-width:980px){.cmp-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.cmp-grid{grid-template-columns:1fr}}
.gallery{columns:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.1rem}
.g-item{margin:0}
.g-item img{aspect-ratio:4/5;object-fit:cover;height:100%}
@media (max-width:600px){.gallery{grid-template-columns:1fr 1fr;gap:.6rem}.g-item{border-radius:14px}.g-item figcaption{font-size:.72rem;padding:1.4rem .6rem .5rem}}
.logo-txt .n972{color:var(--sun);-webkit-text-stroke:.5px var(--navy)}
footer .logo-txt .n972{-webkit-text-stroke:0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
form{position:relative}
.ok.err{background:#fff1f0;color:#a8071a}
form .btn[disabled]{opacity:.7;cursor:wait;transform:none}