:root{
  --bleu:#0d2c54; --bleu2:#163d70; --accent:#e4a11b; --accent-f:#b97f0c;
  --fond:#f4f6fa; --carte:#fff; --texte:#1c2433; --doux:#5d6879; --bord:#e1e6ee;
  --vert:#1f8a4c; --rouge:#c8323c; --ombre:0 2px 10px rgba(13,44,84,.08);
  --r:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
#catalogue{scroll-margin-top:80px}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--fond);color:var(--texte);line-height:1.5}
a{color:var(--bleu2)}
button{font:inherit;cursor:pointer}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}

/* En-tête */
header.top{background:var(--bleu);color:#fff;position:sticky;top:0;z-index:30;box-shadow:0 2px 12px rgba(0,0,0,.15)}
header.top .wrap{display:flex;align-items:center;gap:16px;height:64px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.logo img{height:44px;width:auto;display:block}
.logo span{border-left:1px solid rgba(255,255,255,.3);padding-left:12px}
.logo span{font-size:.8rem;opacity:.75;text-transform:uppercase;letter-spacing:.12em}
nav.menu{margin-left:auto;display:flex;gap:6px}
nav.menu a,nav.menu button{color:#fff;background:none;border:1px solid rgba(255,255,255,.25);padding:7px 14px;border-radius:999px;text-decoration:none;font-size:.9rem}
nav.menu a:hover,nav.menu button:hover{background:rgba(255,255,255,.1)}

/* Bandeau */
.hero{background:linear-gradient(135deg,var(--bleu) 0%,var(--bleu2) 60%,#1f5694 100%);color:#fff;padding:44px 0 56px}
.hero h1{margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.15}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{margin:0;max-width:640px;opacity:.9;font-size:1.05rem}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:28px;align-items:center}
.vitrine{position:relative;border-radius:20px;background:radial-gradient(ellipse at 50% 65%,rgba(255,255,255,.13),rgba(255,255,255,0) 70%);min-height:120px}
.scene3d{width:100%;aspect-ratio:4/3}
.scene3d canvas{display:block;width:100%!important;height:100%!important}
.vitrine-bas{position:absolute;left:12px;right:12px;bottom:10px;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.vitrine-bas span{background:rgba(13,44,84,.75);border:1px solid rgba(255,255,255,.18);padding:6px 12px;border-radius:999px;font-size:.88rem;font-weight:600}
.vitrine.sans3d .scene3d{background:url(img/M19.jpg) center/cover;border-radius:20px}
.regles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:12px;margin-top:26px}
.regle{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:12px 14px;font-size:.92rem}
.regle strong{display:block;font-size:1.25rem;color:var(--accent)}
.alerte-fermee{background:var(--rouge);color:#fff;text-align:center;padding:10px 16px;font-weight:600}

/* Barre de filtres */
.filtres{background:var(--carte);border-radius:var(--r);box-shadow:var(--ombre);padding:14px;margin:-30px 0 20px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;position:relative;z-index:2}
.onglets{display:flex;gap:4px;background:var(--fond);padding:4px;border-radius:10px}
.onglets button{border:0;background:none;padding:7px 14px;border-radius:8px;color:var(--doux);font-weight:600}
.onglets button.actif{background:var(--bleu);color:#fff}
.filtres input[type=search],.filtres select{border:1px solid var(--bord);border-radius:10px;padding:9px 12px;font:inherit;background:#fff;min-width:0}
.filtres input[type=search]{flex:1 1 200px}
.filtres label.chk{display:flex;gap:6px;align-items:center;font-size:.92rem;color:var(--doux)}
.compteur{color:var(--doux);font-size:.9rem;margin:0 0 12px}

/* Grille */
.grille{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;padding-bottom:120px}
.carte{background:var(--carte);border-radius:var(--r);box-shadow:var(--ombre);overflow:hidden;display:flex;flex-direction:column;border:2px solid transparent;transition:transform .15s,border-color .15s}
.carte:hover{transform:translateY(-2px)}
.carte.choisie{border-color:var(--accent)}
.carte.epuise{opacity:.55}
.carte .photo{aspect-ratio:4/3;background:#e9edf3 center/cover no-repeat;position:relative;cursor:zoom-in;border:0;padding:0;width:100%}
.carte .photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.badge{position:absolute;top:10px;left:10px;background:rgba(13,44,84,.88);color:#fff;font-size:.75rem;padding:3px 9px;border-radius:999px;font-weight:600}
.badge.cat-Matelas{background:rgba(185,127,12,.92)}
.carte .corps{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.carte h3{margin:0;font-size:1rem}
.prix{font-size:1.35rem;font-weight:800;color:var(--bleu)}
.prix small{font-size:.8rem;font-weight:600;color:var(--doux)}
.dispo{font-size:.82rem;font-weight:600}
.dispo.ok{color:var(--vert)} .dispo.ko{color:var(--rouge)}
.obs{font-size:.8rem;background:#fff6e2;color:#7a5508;border-radius:8px;padding:4px 8px}
.carte .action{margin-top:auto;padding-top:6px}
.btn{border:0;border-radius:10px;padding:10px 16px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:6px}
.btn-prim{background:var(--accent);color:#1c1300}
.btn-prim:hover{background:var(--accent-f);color:#fff}
.btn-bleu{background:var(--bleu);color:#fff}
.btn-bleu:hover{background:var(--bleu2)}
.btn-ghost{background:#fff;border:1px solid var(--bord);color:var(--texte)}
.btn-danger{background:#fff;border:1px solid #f0c2c6;color:var(--rouge)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.carte .btn{width:100%}
.carte.choisie .btn{background:var(--bleu);color:#fff}

/* Panier */
.panier{position:fixed;left:0;right:0;bottom:0;z-index:25;background:var(--bleu);color:#fff;box-shadow:0 -4px 20px rgba(0,0,0,.2);transform:translateY(110%);transition:transform .25s}
.panier.visible{transform:none}
.panier .wrap{display:flex;align-items:center;gap:14px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.panier .vignettes{display:flex;gap:8px}
.panier .vignettes div{position:relative}
.panier .vignettes img{width:52px;height:52px;object-fit:cover;border-radius:8px;border:2px solid var(--accent)}
.panier .vignettes button{position:absolute;top:-7px;right:-7px;width:20px;height:20px;border-radius:50%;border:0;background:#fff;color:var(--rouge);font-weight:800;line-height:1;font-size:.8rem}
.panier .info{flex:1;min-width:160px}
.panier .info b{font-size:1.1rem}

/* Fenêtres */
.voile{position:fixed;inset:0;background:rgba(10,20,40,.6);z-index:50;display:none;align-items:center;justify-content:center;padding:16px}
.voile.ouvert{display:flex}
.modal{background:#fff;border-radius:18px;max-width:520px;width:100%;max-height:92vh;overflow:auto;padding:24px;position:relative}
.modal h2{margin:0 0 6px;color:var(--bleu)}
.modal .fermer{position:absolute;top:12px;right:12px;border:0;background:var(--fond);width:34px;height:34px;border-radius:50%;font-size:1.1rem}
.champ{display:flex;flex-direction:column;gap:4px;margin:12px 0}
.champ label{font-weight:600;font-size:.9rem}
.champ input{border:1px solid var(--bord);border-radius:10px;padding:11px 12px;font:inherit}
.champ input:focus{outline:2px solid var(--accent);border-color:transparent}
.recap{background:var(--fond);border-radius:12px;padding:10px 12px;margin:12px 0}
.ligne{display:flex;gap:10px;align-items:center;padding:6px 0}
.ligne+.ligne{border-top:1px solid var(--bord)}
.ligne img{width:46px;height:46px;border-radius:8px;object-fit:cover}
.ligne .l{flex:1}
.total{display:flex;justify-content:space-between;font-weight:800;padding-top:8px;border-top:2px solid var(--bord);margin-top:4px}
.msg{border-radius:10px;padding:10px 12px;margin:10px 0;font-size:.93rem}
.msg.err{background:#fde8ea;color:#8c1d26}
.msg.ok{background:#e4f5ea;color:#145c33}
.note{font-size:.82rem;color:var(--doux)}
.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}
.zoom img{max-width:100%;max-height:78vh;display:block;margin:0 auto;border-radius:12px}
.modal.zoom{max-width:900px;padding:16px}

.bon{border:2px dashed var(--bleu);border-radius:14px;padding:16px;margin-top:12px}
.bon h3{margin:0 0 4px}
.bon .bon-logo{height:40px;width:auto;display:block;margin-bottom:8px}
footer{color:var(--doux);font-size:.85rem;text-align:center;padding:26px 16px 120px}
.vide{text-align:center;color:var(--doux);padding:50px 0;grid-column:1/-1}

@media (max-width:640px){
  header.top .logo span{display:none}
  nav.menu a,nav.menu button{padding:6px 10px;font-size:.82rem}
  .hero{padding:30px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:10px}
  .vitrine-bas span{font-size:.78rem}
  .grille{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .regles{grid-template-columns:repeat(2,minmax(0,1fr))}
  .regle{padding:10px;font-size:.82rem}
  .filtres select,.filtres .onglets{flex:1 1 140px}
  .onglets button{flex:1}
  header.top .wrap{gap:8px}
  .logo img{height:36px}
  nav.menu a[href="#catalogue"]{display:none}
  .carte h3{font-size:.9rem}
  .carte .corps{padding:10px}
  .prix{font-size:1.1rem}
  .btn{padding:9px 10px;font-size:.88rem}
}
@media print{
  header.top,.hero,.filtres,.grille,.panier,footer,.compteur,.actions,.fermer{display:none!important}
  .voile{position:static;background:none;display:block;padding:0}
  .modal{max-height:none;box-shadow:none}
}

/* Chargement différé des photos du catalogue */
.carte .photo.chargement{background:linear-gradient(100deg,#e9edf3 30%,#f6f8fb 50%,#e9edf3 70%) 0 0/200% 100%;animation:shimmer 1.3s linear infinite}
.carte .photo img{opacity:0;transition:opacity .35s ease}
.carte .photo img.charge{opacity:1}
.carte .photo .badge{z-index:1}
@keyframes shimmer{to{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){.carte .photo.chargement{animation:none}.carte .photo img{transition:none}}

/* Défilement infini du catalogue */
.sentinelle{min-height:70px;display:flex;align-items:center;justify-content:center;padding:22px 0 30px;color:var(--doux);font-size:.92rem;gap:10px}
.sentinelle .spinner{width:20px;height:20px;border:3px solid var(--bord);border-top-color:var(--bleu);border-radius:50%;animation:tourne .8s linear infinite}
@keyframes tourne{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.sentinelle .spinner{animation-duration:2.4s}}