.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-btn { padding: 6px 10px; }
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1000;
  display: none;
  min-width: 220px;
  background: var(--mud-palette-surface);
  color: var(--mud-palette-text-primary);
  box-shadow: var(--mud-elevation-6);
  border-radius: var(--mud-default-borderradius);
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-item { white-space: nowrap; }