:root{--navy:#0a1420;--blue:#1e7acb;--aqua:#4aa3f5;--sky:#eaf4fe;--ink:#0f1a26;--mute:#5b6b7a;--line:#dde7f1;--bg:#fff;--r:16px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Manrope,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:800}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:1200px;margin:0 auto;padding-inline:20px}
.sec{padding-block:80px}
.soft{background:var(--sky)}
.center{text-align:center;margin-top:36px}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--aqua);margin-bottom:10px}
.head{max-width:680px;margin-bottom:40px}
.head p{color:var(--mute)}

/* boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--aqua);color:#fff;font-weight:700;padding:14px 26px;border-radius:999px;transition:transform .2s,background .2s;border:2px solid transparent;cursor:pointer}
.btn:hover{background:var(--blue);transform:translateY(-2px)}
.btn.sm{padding:9px 18px;font-size:.9rem}
.btn.block{width:100%}
.btn.ghost{background:transparent;border-color:rgba(255,255,255,.7)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.ghost.dark{color:var(--navy);border-color:var(--navy)}
.btn.ghost.dark:hover{background:var(--navy);color:#fff}
.btn.light{background:#fff;color:var(--navy)}
.btn.light:hover{background:var(--sky)}

/* header */
.top{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{flex:0 0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--navy)}
.drop{width:26px;height:26px;border-radius:50% 50% 50% 0;transform:rotate(-45deg);background:linear-gradient(135deg,var(--aqua),var(--blue))}
.top nav{display:flex;align-items:center;gap:22px;white-space:nowrap;font-weight:600;font-size:.95rem}
.top nav a:not(.btn){color:var(--mute)}
.top nav a:not(.btn):hover,.top nav a.on{color:var(--navy)}
.top nav a.on{box-shadow:inset 0 -2px 0 var(--aqua)}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}
.burger i{display:block;width:24px;height:2px;background:var(--navy);margin:5px 0}
@media (max-width:920px){
 .burger{display:block}
 .top nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:flex-start;background:#fff;padding:20px;gap:16px;border-bottom:1px solid var(--line);opacity:0;visibility:hidden;translate:0 -12px;transition:opacity .22s,translate .22s,visibility .22s}
 body.menu .top nav{opacity:1;visibility:visible;translate:0 0}
}

/* hero */
.hero{position:relative;color:#fff;padding-block:150px 170px;overflow:hidden;background:var(--navy) center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:
 linear-gradient(100deg,rgba(10,20,32,.94) 0%,rgba(10,20,32,.82) 42%,rgba(10,20,32,.38) 78%,rgba(10,20,32,.3) 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,20,32,.45),transparent 38%,rgba(10,20,32,.35))}
@media (max-width:760px){
 .hero{padding-block:110px 130px;background-position:center}
 .hero::before{background:linear-gradient(180deg,rgba(10,20,32,.92) 0%,rgba(10,20,32,.8) 45%,rgba(10,20,32,.45) 100%)}
 .hero.h-prod::before{background:linear-gradient(180deg,rgba(10,20,32,.95) 0%,rgba(10,20,32,.88) 38%,rgba(10,20,32,.25) 72%,rgba(10,20,32,.1) 100%)}
 .hero.h-prod{background-position:center bottom;padding-block:100px 300px;min-height:640px}
 .hero.h-prod p{max-width:none}
}
.hero .wrap{position:relative}
.hero p{max-width:620px;font-size:1.15rem;opacity:.9}
.hero h1{max-width:820px}
.hero .kicker{color:#9ccdfb}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.wave{position:absolute;left:0;right:0;bottom:-1px;height:70px;background:#fff;clip-path:path("M0 40 C 240 0 480 70 720 40 S 1200 10 1440 40 L 1440 70 L 0 70 Z");-webkit-mask:none}
@supports not (clip-path:path("M0 0")){.wave{display:none}}
.hero h1{text-shadow:0 2px 24px rgba(0,0,0,.35)}
.hero.h-prod{background-position:right center}
.hero.h-prod::before{background:linear-gradient(100deg,rgba(10,20,32,.92) 0%,rgba(10,20,32,.7) 38%,rgba(10,20,32,.1) 62%,transparent 85%)}
.hero.h-prod p{max-width:520px}

/* services accueil */
.svc3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .25s,box-shadow .25s;background:#fff}
.svc:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(11,37,64,.1)}
.svc>div:last-child{padding:22px}
.svc p{color:var(--mute);font-size:.95rem}
.svc-img{height:190px;background-size:cover;background-position:center}
.svc-img.i3{background-color:#f4f8fa;background-size:contain;background-position:center;background-repeat:no-repeat}
.more{font-weight:700;color:var(--blue)}
@media (max-width:860px){.svc3{grid-template-columns:1fr}}

/* cartes & étapes */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.card p{color:var(--mute);font-size:.95rem;margin:0}
.ico{width:46px;height:46px;border-radius:12px;background:var(--sky);color:var(--blue);display:grid;place-items:center;font-size:1.3rem;margin-bottom:14px}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.steps li{background:#fff;border-radius:var(--r);padding:24px}
.steps b{display:block;font-size:.85rem;color:var(--aqua);margin-bottom:8px}
.steps p{color:var(--mute);font-size:.95rem;margin:0}

/* avant / après */
.projs{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
@media (max-width:860px){.projs{grid-template-columns:1fr}}
.proj{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.proj[hidden]{display:none}
.proj-body{padding:20px 22px 24px}
.proj-body p{color:var(--mute);font-size:.95rem;margin:0}
.proj-body .meta{font-size:.85rem;margin-bottom:8px}
.pill{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;background:var(--sky);color:var(--blue);padding:4px 10px;border-radius:99px;margin-bottom:10px}
.ba{position:relative;aspect-ratio:3/2;max-width:100%;overflow:hidden;user-select:none;background:#cfdde5}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.ba input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.ba-handle{position:absolute;top:0;bottom:0;left:var(--pos);width:3px;background:#fff;transform:translateX(-50%);pointer-events:none;box-shadow:0 0 12px rgba(0,0,0,.3)}
.ba-handle span{position:absolute;top:50%;left:50%;width:44px;height:44px;border-radius:50%;background:#fff;transform:translate(-50%,-50%);box-shadow:0 4px 14px rgba(0,0,0,.25)}
.ba-handle span::before{content:"◀ ▶";position:absolute;inset:0;display:grid;place-items:center;font-size:.7rem;color:var(--navy);letter-spacing:2px}
.tag{position:absolute;top:14px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;background:rgba(11,37,64,.75);color:#fff;padding:5px 12px;border-radius:99px;pointer-events:none}
.tag.l{left:14px}.tag.r{right:14px}

/* filtres */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.filters button{font:inherit;font-weight:600;font-size:.92rem;border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 18px;border-radius:99px;cursor:pointer;transition:all .2s}
.filters button:hover{border-color:var(--aqua)}
.filters button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.filters.small button{font-size:.82rem;padding:6px 14px}
.filters.small button.on{background:var(--aqua);border-color:var(--aqua)}
.count{color:var(--mute);font-size:.9rem;margin:10px 0 20px}

/* produits */
.prods{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.prod{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;transition:transform .25s,box-shadow .25s}
.prod:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(11,37,64,.1)}
.prod[hidden]{display:none}
.pimg{aspect-ratio:1;background:#fff;padding:18px;border-bottom:1px solid var(--line)}
.pimg img{width:100%;height:100%;object-fit:contain}
.pbody{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.pbody h3{font-size:1rem;margin-bottom:6px}
.pbrand{font-size:.72rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--aqua)}
.pcat{font-size:.82rem;color:var(--mute);margin-bottom:14px;flex:1}

/* marques */
.brands{display:flex;flex-wrap:wrap;gap:14px}
.brand{flex:1 1 170px;text-align:center;border:1px solid var(--line);border-radius:var(--r);padding:26px 10px;font-weight:800;font-size:1.3rem;color:var(--navy);letter-spacing:-.01em;transition:all .2s}
.brand:hover{border-color:var(--aqua);color:var(--blue)}
.brandcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}
.bcard{background:#fff;border-radius:var(--r);padding:22px;scroll-margin-top:90px}
.bcard p{color:var(--mute);font-size:.92rem;margin:0}

/* bande CTA */
.band{background:linear-gradient(120deg,#0a1420 0%,var(--blue) 55%,var(--aqua) 100%);color:#fff;text-align:center;padding-block:70px}
.band p{opacity:.92;margin-bottom:24px}

/* footer */
.foot{background:var(--navy);color:#c5d3de;padding-block:60px 24px}
.foot .logo{color:#fff;margin-bottom:12px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.fgrid h4{color:#fff;margin:0 0 12px}
.fgrid a,.fgrid span{display:block;margin-bottom:8px;font-size:.93rem}
.fgrid a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:.85rem}
@media (max-width:760px){.fgrid{grid-template-columns:1fr}.sec{padding-block:56px}.hero{padding-block:80px 110px}}

.wa-float{position:fixed;right:18px;bottom:18px;z-index:60;width:58px;height:58px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.25);transition:transform .2s}
.wa-float:hover{transform:scale(1.08)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* boutique : filtres sur le côté */
.shop{display:grid;grid-template-columns:260px minmax(0,1fr);gap:36px;align-items:start}
.sidebar,.shop-main{min-width:0}
.sidebar{position:sticky;top:92px;max-height:calc(100vh - 110px);overflow:auto;padding-right:4px}
.sblock{margin-bottom:26px}
.sblock h4{margin:0 0 10px;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.filters.side{flex-direction:column;gap:4px;margin:0}
.filters.side button{display:flex;justify-content:space-between;align-items:center;width:100%;text-align:left;border:0;border-radius:10px;padding:9px 12px;background:transparent}
.filters.side button span{font-size:.78rem;color:var(--mute);background:var(--sky);border-radius:99px;padding:1px 9px}
.filters.side button:hover{background:var(--sky)}
.filters.side button.on{background:var(--navy);color:#fff}
.filters.side button.on span{background:rgba(255,255,255,.18);color:#fff}
.shop-main .count{margin-top:0}
.vars{display:flex;flex-wrap:wrap;gap:5px;margin:-6px 0 14px}
.vars span{font-size:.72rem;border:1px solid var(--line);border-radius:6px;padding:1px 7px;color:var(--mute)}
.empty{color:var(--mute);padding:30px 0}
@media (max-width:900px){
 .shop{display:flex;flex-direction:column;gap:8px}
 .sidebar{flex:0 0 auto}
 .shop-main{flex:1 1 auto}
 .sidebar{position:static;max-height:none;overflow:visible;padding:0}
 .sblock{margin-bottom:14px}
 .filters.side{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:6px;max-width:100%;scrollbar-width:none}
 .filters.side::-webkit-scrollbar{display:none}
 .filters.side button{width:auto;white-space:nowrap;gap:8px;border:1px solid var(--line);border-radius:99px}
}

/* logo GOSWIM */
.logo b{color:var(--aqua)}
.logo img{height:30px;max-height:30px;width:auto;display:block}
.foot-logo img{height:78px}
.foot .logo img{filter:none}

/* ---------- Version telephone ---------- */
@media (max-width:760px){
 .wrap{padding-inline:18px}
 .sec{padding-block:48px}
 h1{font-size:clamp(1.85rem,7.5vw,2.4rem)}
 h2{font-size:clamp(1.45rem,5.6vw,1.9rem)}
 .head{margin-bottom:26px}
 .hero{padding-block:86px 104px;min-height:auto}
 .hero p{font-size:1rem}
 .cta{gap:10px;margin-top:22px}
 .cta .btn{width:100%;padding:15px 20px}
 .bar{height:64px}
 .logo img{height:26px;max-height:26px}
 .burger{padding:12px;margin-right:-8px}
 .top nav{inset:64px 0 auto 0;padding:14px 18px 22px;gap:0;box-shadow:0 18px 30px rgba(10,20,32,.12)}
 .top nav a:not(.btn){width:100%;padding:14px 2px;border-bottom:1px solid var(--line);font-size:1rem}
 .top nav a.on{box-shadow:none;color:var(--aqua)}
 .top nav .btn{width:100%;margin-top:16px;padding:14px 20px}
 body.menu{overflow:hidden}
 .svc-img{height:168px}
 .svc>div:last-child{padding:18px}
 .cards{gap:14px}
 .card{padding:20px}
 .steps{gap:14px}
 .steps li{padding:20px}
 .projs{gap:18px}
 .proj-body{padding:16px 18px 20px}
 .ba-handle span{width:38px;height:38px}
 .tag{font-size:.68rem;padding:4px 10px}
 .prods{grid-template-columns:repeat(2,1fr);gap:12px}
 .pimg{padding:12px}
 .pbody{padding:12px 12px 14px}
 .pbody h3{font-size:.92rem;line-height:1.25}
 .pcat{font-size:.75rem;margin-bottom:10px}
 .pbrand{font-size:.65rem}
 .vars span{font-size:.65rem}
 .btn.sm{padding:10px 12px;font-size:.82rem}
 .filters.side{scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;padding-inline:2px}
 .filters.side button{scroll-snap-align:start;padding:10px 16px}
 .brands{gap:10px}
 .brand{flex:1 1 calc(50% - 10px);padding:18px 8px;font-size:1.05rem}
 .brandcards{gap:12px}
 .band{padding-block:52px}
 .foot{padding-block:44px 20px}
 .wa-float{width:54px;height:54px;right:14px;bottom:14px}
}
@media (max-width:380px){
 .prods{grid-template-columns:1fr}
}

/* ================= Animations (v2) ================= */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* hero : image vivante + caustiques */
.hero{background-attachment:scroll}
.hero-media{position:absolute;inset:0;overflow:hidden;z-index:0}
.hero-media i{position:absolute;inset:-6%;background:inherit;background-size:cover;background-position:center;animation:kenburns 26s ease-in-out infinite alternate;will-change:transform}
@keyframes kenburns{from{transform:scale(1) translate3d(0,0,0)}to{transform:scale(1.12) translate3d(-1.5%,-1%,0)}}
.caustics{position:absolute;inset:-20%;z-index:1;pointer-events:none;opacity:.22;mix-blend-mode:screen;
 background:radial-gradient(circle at 20% 30%,rgba(140,215,255,.55) 0 2px,transparent 3px 60px),
 radial-gradient(circle at 70% 60%,rgba(120,200,255,.45) 0 2px,transparent 3px 80px),
 radial-gradient(circle at 45% 80%,rgba(160,225,255,.4) 0 2px,transparent 3px 70px);
 filter:blur(1px);animation:drift 24s linear infinite}
@keyframes drift{from{transform:translate3d(0,0,0) rotate(0)}to{transform:translate3d(-60px,-40px,0) rotate(2deg)}}
.hero .wrap{z-index:2}
.hero h1 .w{display:inline-block;opacity:0;transform:translateY(26px);animation:wordUp .8s cubic-bezier(.22,.61,.36,1) forwards}
@keyframes wordUp{to{opacity:1;transform:none}}
.hero .kicker,.hero p,.hero .cta{opacity:0;animation:wordUp .8s cubic-bezier(.22,.61,.36,1) forwards}
.hero .kicker{animation-delay:.05s}
.hero p{animation-delay:.5s}
.hero .cta{animation-delay:.68s}
.scroll-cue{position:absolute;left:50%;bottom:86px;z-index:2;transform:translateX(-50%);width:26px;height:42px;border:2px solid rgba(255,255,255,.55);border-radius:14px}
.scroll-cue::after{content:"";position:absolute;left:50%;top:8px;width:4px;height:8px;border-radius:2px;background:#fff;transform:translateX(-50%);animation:cue 1.9s ease-in-out infinite}
@keyframes cue{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,16px)}}

/* header qui se solidifie au scroll */
.top{transition:background .3s,box-shadow .3s,border-color .3s}
body.at-top .top{background:transparent;border-color:transparent;box-shadow:none;backdrop-filter:none}
body.at-top .top::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,20,32,.55),transparent);pointer-events:none;z-index:-1}
body.at-top .top nav a:not(.btn){text-shadow:0 1px 10px rgba(10,20,32,.5)}
body.at-top .top nav a:not(.btn){color:rgba(255,255,255,.88)}
body.at-top .top nav a.on{color:#fff}
body.at-top .burger i{background:#fff}
body.at-top .logo img{content:url(img/logo-word.png)}
main{position:relative}

/* chiffres */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat b{display:block;font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--aqua);letter-spacing:-.03em;line-height:1}
.stat span{display:block;margin-top:8px;font-size:.92rem;color:var(--mute)}
.band .stat span{color:rgba(255,255,255,.85)}
.band .stat b{color:#fff}
@media (max-width:760px){.stats{grid-template-columns:repeat(2,1fr);gap:22px}}

/* effets de survol */
.svc,.prod,.proj,.card{will-change:transform}
.svc-img,.pimg img{transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.svc:hover .svc-img{transform:scale(1.05)}
.prod:hover .pimg img{transform:scale(1.06)}
.card{transition:transform .3s,box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-4px);border-color:var(--aqua);box-shadow:0 16px 34px rgba(11,37,64,.08)}
.btn,.brand,.filters button{will-change:transform}
.brand{transition:transform .25s,border-color .25s,color .25s}
.brand:hover{transform:translateY(-3px)}

/* trait anime sous les titres de section */
.head h2{position:relative;display:inline-block}
.head h2::after{content:"";position:absolute;left:0;bottom:-10px;height:3px;width:0;background:linear-gradient(90deg,var(--aqua),transparent);border-radius:2px;transition:width .9s .2s cubic-bezier(.22,.61,.36,1)}
.reveal.in .head h2::after,.head.reveal.in h2::after{width:72px}

@media (prefers-reduced-motion:reduce){
 .reveal{opacity:1;transform:none}
 .hero-media i,.caustics,.scroll-cue::after{animation:none}
 .hero h1 .w,.hero .kicker,.hero p,.hero .cta{opacity:1;animation:none}
}

/* video de fond du hero */
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s ease}
.hero-video.on{opacity:1}
@media (max-width:900px){.hero-video{display:none}}

/* Sélection hiver */
.pimg{position:relative}
.tag-hiv{position:absolute;top:10px;left:10px;z-index:1;background:var(--navy);color:#fff;font-size:.68rem;font-weight:800;letter-spacing:.04em;border-radius:99px;padding:4px 10px}
.hiv-band{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:baseline;background:var(--sky);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px;margin-bottom:16px}
.hiv-band b{color:var(--navy);font-size:1rem}
.hiv-band span{color:var(--mute);font-size:.9rem}
.filters.side button.hiv{font-weight:700;color:var(--navy)}
.filters.side button.hiv.on{color:#fff}