/* Studio Strate · système « Atelier Galerie » */
:root{
  --fond:#f5f4f1; --encre:#191919; --gris:#64625d; --trait:#d6d3cd;
  --socle:#e7e4de; --brume:#dfe5e2; --sable:#ebe3d7; --argile:#eadbd3;
  --petrole:#25484a; --tabac:#5a4231; --bordeaux:#6b2a32; --nuit:#22304f; --ocre:#8a5a1c;
  --texte:"Host Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --courte:200ms; --moyenne:450ms; --longue:900ms; --douce:cubic-bezier(.22,1,.36,1);
  --gout:max(16px,env(safe-area-inset-left,0px)); --goutd:max(16px,env(safe-area-inset-right,0px));
  --marge:56px;
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--fond);color:var(--encre);font-family:var(--texte);font-size:17px;line-height:1.55;font-feature-settings:"tnum";-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
:focus-visible{outline:2px solid var(--petrole);outline-offset:3px}
.wrap{max-width:1280px;margin:0 auto;padding-left:max(var(--marge),env(safe-area-inset-left,0px));padding-right:max(var(--marge),env(safe-area-inset-right,0px))}
.ref{font-size:12px;line-height:1.4;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--gris)}
h1,h2,h3{font-weight:400;letter-spacing:-.03em;text-wrap:balance}
h1{font-size:clamp(36px,5vw,58px);line-height:1.02;letter-spacing:-.035em}
h2{font-size:clamp(28px,3.2vw,40px);line-height:1.05}
h3{font-size:22px;line-height:1.15;letter-spacing:-.02em}
.lead{color:var(--gris);max-width:30em}
.btn{display:inline-block;background:var(--petrole);color:var(--fond);text-decoration:none;font-size:15px;font-weight:500;letter-spacing:.02em;padding:15px 28px;border:0;cursor:pointer;transition:background-color var(--courte) var(--douce),transform var(--courte) var(--douce)}
.btn:hover{background:#1b3a3c}
.btn.clair{background:var(--fond);color:var(--petrole)} .btn.clair:hover{background:var(--brume)}
.btn.off{background:var(--socle);color:var(--gris);cursor:default}
.lien{font-size:15px;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}

/* bandeau + nav */
.bandeau{background:var(--petrole);color:var(--fond);font-size:13px;text-align:center;padding:9px var(--goutd) 9px var(--gout)}
.bandeau b{font-weight:500}
.bandeau i{font-style:normal} .bandeau a{color:inherit;text-underline-offset:3px;white-space:nowrap}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(245,244,241,.92);-webkit-backdrop-filter:saturate(1.2) blur(10px);backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid transparent;transition:border-color var(--courte)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--fond)}
header.colle{border-bottom-color:var(--trait)}
.nav{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:68px}
.logo{font-size:15px;font-weight:500;letter-spacing:.28em;text-decoration:none;white-space:nowrap}
.menu{display:flex;gap:32px;font-size:15px}
.menu a{text-decoration:none;position:relative;padding:4px 0}
.menu a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform var(--moyenne) var(--douce)}
.menu a:hover::after,.menu a[aria-current]::after{transform:scaleX(1)}
.panier{justify-self:end;font-size:15px;text-decoration:none}
.burger{display:none;justify-self:end;background:none;border:0;font:inherit;font-size:15px;cursor:pointer;color:var(--encre);padding:8px 0}

/* sections */
section{padding-block:88px}
.tete{display:flex;justify-content:space-between;align-items:baseline;gap:16px;border-top:1px solid var(--encre);padding-top:14px;margin-bottom:32px}
.tete h2{font-size:15px;font-weight:500;letter-spacing:.08em;text-transform:uppercase}

/* socles et couleurs d'objet */
.v-a{--acc:var(--petrole);--soc:var(--brume)} .v-b{--acc:var(--tabac);--soc:var(--argile)}
.v-c{--acc:var(--bordeaux);--soc:var(--sable)} .v-d{--acc:var(--nuit);--soc:var(--socle)}
.socle{background:var(--soc,var(--socle));position:relative;overflow:hidden;box-shadow:inset 0 -4px 0 var(--acc,transparent);transition:background-color var(--courte) var(--douce)}
.socle img{width:100%;height:100%;object-fit:cover;mix-blend-mode:multiply;transition:transform var(--moyenne) var(--douce)}

/* cartes */
.cartes{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.carte{text-decoration:none;display:block}
.carte .socle{aspect-ratio:4/5}
.carte:hover .socle img{transform:translateY(-6px) scale(1.02)}
.carte .meta{display:grid;grid-template-columns:1fr auto;gap:4px 8px;padding-top:14px;font-size:15px}
.carte .meta .ref{grid-column:1/-1;color:var(--acc)}
.carte .prix{color:var(--gris)}
.bientot .socle{background:transparent;outline:1px solid var(--trait);outline-offset:-1px;display:flex;align-items:center;justify-content:center}
.bientot .ref{color:var(--ocre)}

/* fiche en bande */
.bande{background:var(--acc,var(--petrole));color:var(--fond)}
.fiche{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.fiche .socle{aspect-ratio:1/1;box-shadow:none}
.fiche .ref{color:var(--brume)}
.fiche h2 .var{color:var(--brume)}
.fiche p{color:#d3dddb;max-width:28em}
.lignes{margin:22px 0 26px}
.lignes div{display:flex;justify-content:space-between;gap:16px;border-top:1px solid rgba(245,244,241,.25);padding:11px 0;font-size:15px}
.lignes dt{color:#c3d0ce}
.achat{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.achat .prix{font-size:28px;letter-spacing:-.02em}

/* hero niveau 3 : tiroir qui s'ouvre */
.scene{height:260vh;position:relative}
.scene .colle-h{position:sticky;top:calc(68px + env(safe-area-inset-top,0px));height:calc(100vh - 68px);min-height:560px;display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center}
.etapes{display:grid}
.etape{grid-area:1/1;opacity:0;pointer-events:none;transform:translateY(14px);transition:opacity var(--moyenne) var(--douce),transform var(--moyenne) var(--douce)}
.etape.on{opacity:1;transform:none;pointer-events:auto}
.etape .lead{margin:20px 0 28px}
.progres{display:flex;gap:6px;margin-top:32px}
.progres i{width:28px;height:2px;background:var(--trait);transition:background-color var(--courte)}
.progres i.on{background:var(--petrole)}
.plateau{background:var(--brume);aspect-ratio:1/1;max-height:calc(100vh - 140px);justify-self:stretch;display:flex;align-items:center;justify-content:center;perspective:1100px;position:relative;overflow:hidden;box-shadow:inset 0 -4px 0 var(--petrole)}
.facade{width:62%;aspect-ratio:167/220;background:#e9ecea;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(6,1fr);gap:3.2%;padding:6%;transform:rotateX(calc(var(--p,0)*8deg)) rotateY(calc(var(--p,0)*-14deg));transform-style:preserve-3d;box-shadow:0 30px 50px -30px rgba(25,25,25,.45);transition:transform 80ms linear}
.tir{background:var(--fond);position:relative;display:flex;align-items:center;justify-content:center;font-size:clamp(11px,1.3vw,17px);font-weight:500;color:var(--petrole);transform-style:preserve-3d;box-shadow:inset 0 0 0 1px rgba(37,72,74,.12)}
.tir::after{content:"";position:absolute;left:30%;right:30%;top:0;height:16%;background:#e9ecea;border-radius:0 0 999px 999px}
.tir.sort{z-index:2;transform:translateZ(calc(var(--o,0)*90px)) translateY(calc(var(--o,0)*-6%));background:var(--fond);box-shadow:0 calc(var(--o,0)*24px) calc(var(--o,0)*30px) -12px rgba(25,25,25,.4),inset 0 0 0 1px rgba(37,72,74,.25)}
.tir.sort::before{content:"";position:absolute;left:0;right:0;top:100%;height:calc(var(--o,0)*90px);background:#d3dbd8;transform-origin:top;transform:rotateX(-90deg)}
.photo-finale{position:absolute;inset:0;opacity:var(--f,0);transition:opacity 80ms linear}
.photo-finale img{width:100%;height:100%;object-fit:cover;mix-blend-mode:multiply}

/* studio + infos */
.deux{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.infos{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.info{border-top:1px solid var(--trait);padding-top:14px}
.info h3{margin-bottom:6px}
.info p{color:var(--gris);font-size:15px}
.faq details{border-top:1px solid var(--trait);padding:16px 0}
.faq details:last-child{border-bottom:1px solid var(--trait)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;font-size:17px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--petrole);transition:transform var(--courte) var(--douce)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{color:var(--gris);padding-top:10px;max-width:40em}

/* fiche objet */
.objet{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:start;padding-block:40px 88px}
.objet .socle{aspect-ratio:1/1;position:sticky;top:96px}
.vars{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}
.vars button{font:inherit;font-size:15px;background:transparent;border:1px solid var(--trait);color:var(--encre);padding:10px 16px;cursor:pointer;display:flex;align-items:center;gap:10px;transition:border-color var(--courte)}
.vars button i{width:12px;height:12px;background:var(--c)}
.vars button[aria-pressed="true"]{border-color:var(--encre)}
.objet .lignes div{border-top-color:var(--trait)} .objet .lignes dt{color:var(--gris)}
.objet h1 .var{color:var(--acc)}
.objet .ref.num{color:var(--acc)}
.option{font-size:15px;color:var(--gris);margin-top:16px}

footer{background:var(--brume);padding-block:48px}
.pied{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;font-size:15px}
.pied a{display:block;text-decoration:none;color:var(--gris);padding:3px 0} .pied a:hover{color:var(--encre)}
.pied p{color:var(--gris);margin-top:10px;max-width:22em}

/* apparitions (niveau 1) : visible par défaut, animé seulement si JS l'active */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity var(--longue) var(--douce),transform var(--longue) var(--douce)}
.js .reveal.vu{opacity:1;transform:none}

@media (max-width:900px){
  :root{--marge:16px}
  section{padding-block:56px}
  .nav{grid-template-columns:1fr auto;height:60px}
  .menu{display:none}
  .burger{display:block}
  .panier{display:none}
  body.ouvert .menu{display:flex;flex-direction:column;gap:0;position:absolute;left:0;right:0;top:60px;background:var(--fond);border-bottom:1px solid var(--trait);padding:8px var(--goutd) 16px var(--gout)}
  body.ouvert .menu a{padding:12px 0;font-size:18px}
  .cartes{grid-template-columns:1fr 1fr;gap:12px}
  .carte .meta{font-size:14px}
  .fiche,.deux,.objet{grid-template-columns:1fr;gap:28px}
  .infos{grid-template-columns:1fr}
  .pied{grid-template-columns:1fr}
  .bandeau-tel{display:block;margin-top:2px} .bandeau-tel .sep{display:none}
  .objet .socle{position:relative;top:0}
  .scene{height:220vh}
  .scene .colle-h{top:calc(60px + env(safe-area-inset-top,0px));height:calc(100svh - 60px);min-height:0;grid-template-columns:1fr;grid-template-rows:auto 1fr;gap:16px;align-content:start;padding-top:12px}
  .plateau{order:-1;aspect-ratio:auto;height:46svh;max-height:none}
  .facade{width:auto;height:84%}
  .etape .lead{margin:12px 0 18px;font-size:15px}
  .btn{padding:14px 22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .reveal{opacity:1;transform:none}
}
.calme .scene{height:auto}
.calme .scene .colle-h{position:relative;top:0;height:auto;min-height:0;padding-block:40px}
.calme .etape{display:none} .calme .etape[data-e="0"]{display:block}

/* scène d'accueil 3D : N°001 Sapin */
.h3d{position:relative;height:720vh;background:#0f1416;color:var(--fond);--haut:68px;--nuit-trait:rgba(245,244,241,.16)}
.h3d-scene{position:sticky;top:calc(var(--haut) + env(safe-area-inset-top,0px));height:calc(100vh - var(--haut) - env(safe-area-inset-top,0px));height:calc(100svh - var(--haut) - env(safe-area-inset-top,0px));min-height:520px;overflow:hidden}
.h3d canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.h3d-repli{display:none}
.h3d.sans-3d canvas,.h3d.sans-3d .h3d-charge{display:none}
.h3d.sans-3d .h3d-repli{display:block;position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.4}
.h3d-charge{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#8f8b83;transition:opacity var(--longue) var(--douce)}
.h3d-texte{position:absolute;left:0;right:0;bottom:max(8vh,48px);z-index:2;pointer-events:none}
.h3d-etapes{display:grid;max-width:31rem}
.h3d-etape{grid-area:1/1;align-self:end;opacity:0;transform:translateY(16px);text-shadow:0 1px 16px rgba(15,20,22,.6)}
.h3d-etape[data-a="0"]{opacity:1;transform:none}
.h3d-etape.on{pointer-events:auto}
.h3d .ref{color:#c99550}
.h3d h1{font-size:clamp(52px,8vw,104px);line-height:.94;margin-top:14px}
.h3d h2{font-size:clamp(32px,4.4vw,56px);line-height:1;margin-top:14px}
.h3d-etape p{margin-top:16px;color:#cfcac0;max-width:27rem}
.h3d-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:26px;text-shadow:none}
.h3d .lien{color:var(--fond)}
.h3d-indice{display:flex;align-items:center;gap:12px;margin-top:26px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#8f8b83}
.h3d-indice i{display:block;width:44px;height:1px;background:currentColor;transform-origin:left;animation:h3d-glisse 2.4s var(--douce) infinite}
@keyframes h3d-glisse{0%{transform:scaleX(0)}60%{transform:scaleX(1)}100%{transform:scaleX(1);opacity:0}}
.h3d-fiche{margin-top:18px;border-top:1px solid var(--nuit-trait)}
.h3d-fiche div{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--nuit-trait);font-size:15px}
.h3d-fiche dt{color:#8f8b83}
.h3d-rail{position:absolute;z-index:2;right:max(var(--marge),env(safe-area-inset-right,0px));bottom:max(8vh,48px);display:flex;flex-direction:column;align-items:flex-end;gap:12px;font-size:12px;letter-spacing:.14em;color:#cfcac0;font-variant-numeric:tabular-nums}
.h3d-ligne{display:block;width:1px;height:24vh;background:var(--nuit-trait);position:relative}
.h3d-ligne i{position:absolute;inset:0;background:var(--fond);transform-origin:top;transform:scaleY(0)}
@media (max-width:900px){.h3d{--haut:60px;height:620vh}.h3d-rail{display:none}.h3d-texte{bottom:28px}.h3d-etape p{font-size:15px}.h3d-fiche div{font-size:14px}}
@media (prefers-reduced-motion:reduce){.h3d-indice i{animation:none}}