/* Unterstreichung für aktive Navigationslinks */
.navbar-nav .nav-link.active,
.dropdown-item.active {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* Unterstreichung für aktive Buttons (z. B. Layout-Optionen) */
.btn-check:checked + .btn {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.dropdown-submenu {
  position: relative;
}

.dropdown-submenu > .dropdown-menu {
  display: none;
  position: absolute;
  top: 0;
  left: 100%;
  margin-left: 0.1rem;
  z-index: 1001;
}

.dropdown-submenu:hover > .dropdown-menu {
  display: block;
}