/* =========================================================
   iSquareCube — home V5
   Feuille dédiée à la page d'accueil (les pages internes gardent main.css)
   ========================================================= */
@font-face{font-family:"Roboto";font-weight:300;font-style:normal;font-display:swap;src:url("../fonts/Roboto-Light.woff") format("woff")}
@font-face{font-family:"Roboto";font-weight:400;font-style:normal;font-display:swap;src:url("../fonts/Roboto-Regular.woff") format("woff")}
@font-face{font-family:"Roboto";font-weight:500;font-style:normal;font-display:swap;src:url("../fonts/Roboto-Regular.woff") format("woff")}
/* =========================================================
   Palette reprise de la V4 (main.css) — logo conservé tel quel
   ========================================================= */
:root{
  --bg:#ffffff; --bg2:#f3f4f6; --stone:#dcdee2; --ink:#3d3935; --graphite:#58595b;
  --muted:#85878c; --blue:#4062AD; --blue-d:#2f4c8c; --night:#101820;
  --ease:cubic-bezier(.22,.8,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Roboto,sans-serif;font-weight:300;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1180px,90vw);margin:0 auto}

/* ---------- Barre de navigation ---------- */
.nav{position:fixed;inset:0 0 auto 0;height:76px;z-index:50;display:flex;align-items:center;transition:background .4s,box-shadow .4s}
.nav.solid{background:rgba(255,255,255,.92);backdrop-filter:saturate(1.2) blur(10px);box-shadow:0 1px 0 #e6e8eb}
.nav .wrap{display:flex;align-items:center;justify-content:space-between}
#navSlot{width:82px;height:48px}
.nav ul{display:flex;gap:26px;list-style:none;font-size:13px;letter-spacing:.12em;text-transform:uppercase;font-weight:400}
.nav ul a{position:relative;padding:6px 0;color:var(--graphite)}
.nav ul a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--blue);transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.nav ul a:hover::after{transform:scaleX(1);transform-origin:left}
.burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);margin:7px 8px;transition:.3s}

/* Logo d'origine, déplacé entre la section d'accueil et la barre de navigation */
#logoFly{position:fixed;height:auto;left:0;top:0;z-index:60;transform-origin:0 0;will-change:transform;pointer-events:auto;cursor:pointer}

/* ---------- Section d'accueil : la fabrique ---------- */
#home{position:relative;height:230vh}
.stage{position:sticky;top:0;height:100vh;overflow:hidden;background:var(--bg)}
#gl{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-copy{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;pointer-events:none}
.hero-copy .wrap>*{pointer-events:auto}
#logoSlot{width:300px;height:176px;margin-bottom:28px}
.hero h1{font-size:clamp(28px,3.4vw,46px);font-weight:300;line-height:1.15;color:var(--ink);max-width:560px;letter-spacing:-.01em}
.hero h1 b{font-weight:500;color:var(--blue)}
.builds{margin-top:18px;font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;gap:12px;align-items:baseline}
#word{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:clamp(20px,2vw,26px);letter-spacing:0;text-transform:none;color:var(--blue);min-width:12ch}
.slogan{margin-top:10px;font-size:17px;color:var(--graphite)}
.ctas{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:400;border:1px solid var(--blue);transition:.35s var(--ease);cursor:pointer;font-family:inherit}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue-d);border-color:var(--blue-d);transform:translateY(-2px)}
.btn.ghost{color:var(--blue);background:transparent}
.btn.ghost:hover{background:var(--blue);color:#fff}
.hint{position:absolute;z-index:2;left:50%;bottom:26px;transform:translateX(-50%);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:10px;pointer-events:none}
.hint i{width:1px;height:46px;background:linear-gradient(var(--muted),transparent);animation:drip 2.2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
#voile{position:absolute;inset:0;z-index:3;background:var(--bg);opacity:0;pointer-events:none}
.tip{position:absolute;z-index:2;right:28px;bottom:26px;font-size:12px;color:var(--muted);pointer-events:none}
.no-gl .stage{background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='32'%3E%3Cpath d='M28 0l28 16-28 16L0 16z' fill='%23f1f2f4'/%3E%3C/svg%3E")}

/* ---------- Titres de section avec mot fantôme en parallaxe ---------- */
section{position:relative}
.head{position:relative;text-align:center;padding:140px 0 70px}
.mot-fantome{position:absolute;left:50%;top:70px;white-space:nowrap;font-size:clamp(70px,13vw,190px);font-weight:500;letter-spacing:-.02em;color:transparent;-webkit-text-stroke:1px rgba(16,24,32,.10);pointer-events:none;translate:-50% 0;z-index:0}
.kicker{position:relative;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--blue);font-weight:500}
.head h2{position:relative;font-size:clamp(30px,3.6vw,48px);font-weight:300;margin-top:10px;letter-spacing:-.01em}
.head p{position:relative;max-width:620px;margin:16px auto 0;color:var(--graphite)}

/* ---------- Métiers ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:70px;align-items:center;padding-bottom:140px}
.about-txt p{font-size:19px;color:var(--graphite);margin-bottom:20px}
.about-txt strong{font-weight:500;color:var(--ink)}
.stack{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.stack span{font-size:12px;letter-spacing:.08em;padding:7px 12px;border:1px solid var(--stone);color:var(--graphite)}
.iso{position:relative;height:460px;transform-style:flat}
.iso svg{width:100%;height:100%;overflow:visible}
.iso .bloc{opacity:0;transform:translateY(-60px);transition:opacity .6s var(--ease),transform .9s cubic-bezier(.3,1.4,.5,1);transition-delay:var(--d,0s)}
.iso.in .bloc{opacity:1;transform:none}
.iso text{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:11px;fill:#85878c}
.chip{position:absolute;background:#fff;padding:12px 16px;box-shadow:0 18px 40px -22px rgba(16,24,32,.45);border-left:3px solid var(--blue);z-index:2}
.chip b{display:block;font-size:26px;font-weight:300;line-height:1;color:var(--ink)}
.chip small{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.chip.c1{left:0;top:4%}.chip.c2{left:38%;top:-2%}.chip.c3{right:0;bottom:4%}
.stamp{position:absolute;right:0;bottom:0;background:var(--blue);color:#fff;padding:22px 26px;z-index:2}
.stamp b{display:block;font-size:40px;font-weight:300;line-height:1}
.stamp small{font-size:11px;letter-spacing:.2em;text-transform:uppercase}

/* ---------- Bandeaux en parallaxe ---------- */
.band{position:relative;height:78vh;min-height:460px;overflow:hidden;background:var(--night);color:#fff;display:flex;align-items:center}
.band .layer{position:absolute;inset:-20% 0;will-change:transform}
.band .cube{position:absolute}
.band blockquote{position:relative;z-index:3;font-size:clamp(28px,4vw,58px);font-weight:300;line-height:1.15;max-width:900px;letter-spacing:-.01em}
.band blockquote em{font-style:normal;color:#8fa6e0}
.band cite{display:block;margin-top:22px;font-style:normal;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:#8b93a6}

/* ---------- Services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding-bottom:140px;perspective:1200px}
.card{position:relative;background:#fff;box-shadow:0 1px 0 rgba(16,24,32,.04);padding:38px 34px 40px;border:1px solid #e6e8eb;transform-style:preserve-3d;transition:transform .5s var(--ease),box-shadow .5s;overflow:hidden}
.card:hover{box-shadow:0 30px 60px -30px rgba(16,24,32,.35)}
.card .num{position:absolute;right:26px;top:22px;font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:13px;color:var(--stone)}
.card h3{font-size:20px;font-weight:400;margin:26px 0 12px;transform:translateZ(30px)}
.card p{font-size:15px;color:var(--graphite);transform:translateZ(18px)}
.card::before{content:"";position:absolute;left:0;bottom:0;height:3px;width:100%;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease)}
.card:hover::before{transform:scaleX(1)}
.mini{width:44px;height:44px;position:relative;transform-style:preserve-3d;transform:translateZ(40px) rotateX(-24deg) rotateY(38deg);transition:transform 1s var(--ease)}
.card:hover .mini{transform:translateZ(40px) rotateX(-24deg) rotateY(218deg)}
.mini i{position:absolute;inset:0;border:1px solid var(--blue-d)}
.mini i:nth-child(1){background:#4062AD;transform:translateZ(22px)}
.mini i:nth-child(2){background:#3654a0;transform:rotateY(90deg) translateZ(22px)}
.mini i:nth-child(3){background:#5a7ac4;transform:rotateY(180deg) translateZ(22px)}
.mini i:nth-child(4){background:#2f4c8c;transform:rotateY(-90deg) translateZ(22px)}
.mini i:nth-child(5){background:#7d97d4;transform:rotateX(90deg) translateZ(22px)}
.mini i:nth-child(6){background:#26407a;transform:rotateX(-90deg) translateZ(22px)}

/* ---------- Portfolio ---------- */
.filters{display:flex;justify-content:center;flex-wrap:wrap;gap:6px;margin-bottom:40px}
.filters button{font-family:inherit;font-size:12px;letter-spacing:.14em;text-transform:uppercase;padding:10px 18px;border:1px solid transparent;background:none;color:var(--graphite);cursor:pointer;transition:.3s}
.filters button:hover{color:var(--blue)}
.filters button.on{border-color:var(--blue);color:var(--blue)}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-bottom:140px}
.item{position:relative;aspect-ratio:1;overflow:hidden;background:var(--bg2);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.item.out{opacity:0;transform:scale(.92)}
.item.gone{display:none}
.item img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease),filter .6s}
.item:hover img{transform:scale(1.07);filter:saturate(.6) brightness(.55)}
.item .meta{position:absolute;inset:auto 0 0 0;padding:22px;color:#fff;transform:translateY(30px);opacity:0;transition:.5s var(--ease)}
.item:hover .meta{transform:none;opacity:1}
.meta h4{font-weight:400;font-size:19px}
.meta span{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#c9d4f0}
.meta em{display:block;margin-top:10px;font-style:normal;font-size:12px;letter-spacing:.12em;text-transform:uppercase}

/* ---------- Partenaires : défilement continu ---------- */
.brands{border-top:1px solid #e6e8eb;border-bottom:1px solid #e6e8eb;padding:34px 0;overflow:hidden;background:#fff}
.track{display:flex;gap:70px;width:max-content;animation:marquee 38s linear infinite}
.brands:hover .track{animation-play-state:paused}
.track img{height:70px;width:auto;filter:grayscale(1) opacity(.55);transition:filter .4s}
.track img[src$=".svg"]{padding:14px}
.track img:hover{filter:none}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;padding-bottom:140px}
.coord p{color:var(--graphite);margin-bottom:22px}
.coord .line{font-size:22px;font-weight:300;color:var(--ink)}
.coord .line b{font-weight:400;color:var(--blue)}
form{display:grid;gap:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{position:relative}
.field input,.field textarea{width:100%;font:inherit;font-size:16px;padding:22px 16px 10px;border:1px solid var(--stone);background:#fff;color:var(--ink);outline:none;transition:border-color .3s}
.field textarea{min-height:170px;resize:vertical}
.field label:not(.error){position:absolute;left:16px;top:16px;font-size:15px;color:var(--muted);pointer-events:none;transition:.25s var(--ease)}
.field input:focus,.field textarea:focus{border-color:var(--blue)}
.field input:focus+label,.field input:not(:placeholder-shown)+label,.field textarea:focus+label,.field textarea:not(:placeholder-shown)+label{position:absolute;top:6px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.legal{font-size:12px;color:var(--muted)}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.alert{padding:14px 18px;font-size:15px;border-left:3px solid}
.alert-success{background:#eef3fb;border-color:var(--blue);color:var(--blue-d)}
.alert-danger{background:#fbefee;border-color:#c26e60;color:#8a3b30}
.alert strong{font-weight:400}
.field.has-error input,.field.has-error textarea{border-color:#c26e60}
label.error{position:static;display:block;margin-top:6px;font-size:13px;color:#c26e60;letter-spacing:0;text-transform:none}
input.btn{-webkit-appearance:none;appearance:none;border-radius:0}
input.btn:disabled{opacity:.6;cursor:wait}
.legal a{border-bottom:1px solid var(--stone)}
.coord a:hover b{text-decoration:underline}
.card .more{display:inline-block;margin-top:18px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);transform:translateZ(18px)}
.card .more:hover{text-decoration:underline}
.social{display:flex;gap:18px;margin-top:10px;font-size:13px}
.social a{color:var(--graphite);border-bottom:1px solid transparent}
.social a:hover{border-color:var(--graphite)}

/* ---------- Pied de page ---------- */
footer{background:var(--bg2);padding:60px 0 40px}
footer .wrap{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap}
footer img{width:150px}
footer small{font-size:13px;color:var(--muted)}
footer small a{border-bottom:1px solid transparent}
footer small a:hover{border-color:var(--muted)}

/* ---------- Apparitions au scroll ---------- */
[data-reveal]{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--d,0s)}
[data-reveal].in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .nav ul{display:none;position:absolute;top:76px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);padding:10px 5vw 20px;box-shadow:0 20px 40px -20px rgba(0,0,0,.2)}
  .nav.open ul{display:flex}
  .nav ul a{display:block;padding:14px 0}
  .burger{display:block}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:50px}
  .services-grid{grid-template-columns:1fr 1fr}
  .grid{grid-template-columns:1fr 1fr 1fr}
}
@media (max-width:640px){
  #logoSlot{width:200px;height:117px}
  .hero-copy{justify-content:flex-end;padding-bottom:110px}
  .services-grid,.row2{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .tip{display:none}
  .stamp{right:10px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  [data-reveal],.iso .bloc{opacity:1;transform:none;transition:none}
  .track{animation:none}
  .hint i{animation:none}
}