.entete{
  position: sticky;
  top: 0;
  z-index: 1200;           /* ↑ passe devant tout */
  background:#fff;
  border-bottom:1px solid #e8ecf4;
  transition: box-shadow .2s ease;
}
.entete.ombre{             /* ombre quand on défile */
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
}
.h-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;color:var(--noir);font-weight:800;font-size:18px}
.logo:hover{text-decoration:none}

.menu{display:flex;gap:18px;margin:0;padding:0;list-style:none}
.menu a{display:inline-block;padding:12px 6px;color:var(--gris)}
.menu a:focus-visible{outline:2px solid var(--couleur);outline-offset:2px;border-radius:8px}

.burger{display:none;background:transparent;border:0;font-size:22px;padding:8px;border-radius:10px}
.burger:focus-visible{outline:2px solid var(--couleur);outline-offset:2px}

/* Bouton Fermer : caché par défaut (bureau) */
.item-mobile.fermer-wrap{display:none}

@media (max-width: 900px){
  .burger{display:inline-block}
  .menu{
    display:none;position:fixed;inset:0;
    background:rgba(16,18,24,.96);
    backdrop-filter:saturate(130%) blur(6px);
    flex-direction:column;align-items:center;justify-content:center;
  }
  .menu.ouvert{display:flex}
  .menu[aria-hidden="false"]{display:flex}
  .menu a{color:#fff;font-size:20px}

  /* Bouton Fermer : visible uniquement sur mobile */
  .item-mobile.fermer-wrap{
    display:block;
    position:absolute;top:10px;right:10px;list-style:none;margin:0;padding:0;
  }
  .fermer-menu{
    display:inline-flex;align-items:center;gap:8px;
    background:transparent;border:0;color:#fff;font-size:18px;
    padding:10px 12px;border-radius:12px;cursor:pointer;
  }
  .fermer-menu:hover{background:rgba(255,255,255,.08)}
  .fermer-menu:focus-visible{outline:2px solid var(--couleur);outline-offset:2px}
  .fermer-menu .txt{font-size:16px}
}