.submenu-dropdown .submenu {
  display: none;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease;
  position: absolute;
  z-index: 1000;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 8px;
  top: 100%;
  right: 0;
  width: 200px;
  max-height: 320px;
  overflow-y: auto;
  pointer-events: none;
}

.submenu-dropdown.open .submenu {
  display: inline !important;
  visibility: visible;
  opacity: 100;
  pointer-events: auto;
}