/* === ColVis dropdown styling === */
.btn-group .dt-button-collection {
  background-color: var(--secondary-dark5) !important;
  border-radius: var(--border-radius) !important;

  right: 0 !important;
  left: auto !important;
  transform: none !important;

  border: 1px solid var(--border);

  min-width: 200px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  overflow: hidden !important;
}

/* Dropdown title */
.btn-group .dt-button-collection-title {
    font-weight: bold;
    color: var(--text);
    font-size: 0.9rem;
    padding: 4px !important;
    border-bottom: 1px solid var(--border);
    background-color: var(--background-dark3);
    margin: 0 !important;
    text-align: center;
}

/* List items */
.btn-group .dt-button-collection ul.dropdown-menu {
    background-color: transparent !important;  /* use parent bg */
    padding: 0;
    margin: 0;
    list-style: none;

    max-height: 500px;
    overflow-y: scroll;
}
.btn-group .dt-button-collection ul.dropdown-menu li:nth-of-type(odd) {
    background-color: rgba(0,0,0,.1);
}
.btn-group .dt-button-collection ul.dropdown-menu li .dropdown-item:hover {
    background-color: rgba(0,0,0,.3);
}
.btn-group .dt-button-collection ul.dropdown-menu li .dropdown-item:focus {
    background-color: transparent;
}

/* Each item */
.btn-group .dt-button-collection ul.dropdown-menu li a.dropdown-item {
    color: var(--text) !important;
    padding: 6px 10px !important;
    font-size: 0.85rem;
    border-radius: 4px;
    display: block;
}

.btn-group .dt-button-collection ul.dropdown-menu li.buttons-colvisRestore {
    border-top: 1px solid var(--border);
    background-color: var(--secondary-light2);
    text-align: center;
}