.animate-slide-up {
    animation: popupSlideUp 0.35s ease-out;
}

.dropdown-menu {
    animation: popupSlideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.3s; opacity: 0; }

@keyframes slideUp {
    from { 
        opacity: 0; 
        transform: translateY(30px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideDown {
    from { 
        opacity: 0; 
        transform: translateY(-30px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes popupSlideDown {
  0% {
    opacity: 0;
    transform: translateY(-3px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(30px) scale(1);
  }
}

@keyframes popupSlideUp {
  0% {
    opacity: 0;
    transform: scale(0.85);
  }
  60% {
    opacity: 1;
    transform: scale(1.03); 
  }
  100% {
    opacity: 1;
    /* On force une couche 3D plate (Z=0) au lieu de 'none' */
    transform: translateZ(0); 
  }
}

/* 2. On définit une simple apparition en fondu pour la petite flèche */
@keyframes popupFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}