.dropdown-menu {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: max-height 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  background-color: var(--petroleo);
  border: none;
  border-radius: 0;
}

.dropdown-menu.show {
  max-height: 500px;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-item {
  color: var(--branco);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown-item:hover {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--branco);
}

.dropdown-divider {
  border-color: rgba(255, 255, 255, 0.2);
}