/* OLT Filter */
.olt-filter-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.olt-filter-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.olt-filter-item:hover {
    background: var(--gray-50);
}

.olt-filter-item input[type="checkbox"] {
    display: none;
}

.olt-filter-item .checkbox-custom {
    width: 16px;
    height: 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.olt-filter-item input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.olt-filter-item input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: -2px;
    left: 1px;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.olt-name {
    flex: 1;
    color: var(--gray-900);
    font-weight: 500;
}

.olt-count {
    font-size: 0.75rem;
    color: var(--gray-500);
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    min-width: 20px;
    text-align: center;
}

/* Select All styling */
#select-all-olts + .checkbox-custom {
    border-color: var(--primary-color);
}

/* Dropdown container */
.olt-dropdown {
    position: relative;
}

.olt-dropdown-toggle {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    cursor: pointer;
    color: var(--gray-800);
}

.olt-dropdown-menu {
    position: absolute;
    z-index: 20;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    display: none;
    padding: var(--spacing-sm);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.olt-dropdown.open .olt-dropdown-menu {
    display: block;
}

.olt-list {
    max-height: 220px;
    overflow-y: auto;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
}

.olt-list .olt-filter-item {
    border-bottom: 1px solid var(--gray-100);
    margin: 0;
    border-radius: 0;
}

.olt-list .olt-filter-item:last-child {
    border-bottom: none;
}

.filter-summary {
    display: none;
}

.filter-summary.active {
    display: none;
}

.filter-navigation {
    margin-top: var(--spacing-sm);
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.filter-navigation .filter-nav-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    min-width: 42px;
}

.filter-clear {
    margin-top: var(--spacing-sm);
    width: 100%;
}

.nav-info {
    font-size: 0.75rem;
    color: var(--gray-500);
    min-width: 80px;
    text-align: center;
}

.topology-breadcrumb {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.topology-breadcrumb span + span::before {
    content: '›';
    margin: 0 var(--spacing-xs);
    color: var(--gray-400);
}


/* Scrollbar styling for OLT list */
.olt-list::-webkit-scrollbar {
    width: 6px;
}

.olt-list::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius-sm);
}

.olt-list::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-sm);
}

.olt-list::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* OLT static select + chips */
.olt-select-row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    gap: var(--spacing-sm);
    align-items: center;
}

.olt-select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--gray-800);
}

.btn.btn-link {
    background: transparent;
    color: var(--primary-color);
    padding: 6px 8px;
}

.selected-olts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: var(--spacing-sm);
}

.selected-olts .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--gray-100);
    color: var(--gray-800);
    font-size: 12px;
}

.selected-olts .chip .remove {
    cursor: pointer;
    color: var(--gray-600);
}
/* OLT Multi-Select Filter */
.olt-filter-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.olt-multiselect {
    position: relative;
}

.olt-multiselect.open {
    z-index: 2000;
}

.multiselect-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-sm);
    height: var(--control-height);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.8125rem; /* slightly smaller than search */
}

.multiselect-trigger:hover {
    border-color: var(--gray-400);
}

.multiselect-trigger.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.18);
}

.multiselect-label {
    flex: 1;
    color: var(--gray-900);
}

.multiselect-arrow {
    color: var(--gray-500);
    font-size: 0.75rem;
    transition: var(--transition-fast);
}

.multiselect-trigger.active .multiselect-arrow {
    transform: rotate(180deg);
}

.multiselect-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1500;
    /* Ensure dropdown can extend outside all containers */
    min-width: 100%;
    width: max-content;
    max-height: 250px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-fast);
}

.multiselect-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.multiselect-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.multiselect-option:hover {
    background: var(--gray-50);
}

.multiselect-option input[type="checkbox"] {
    display: none;
}

.multiselect-option .checkbox-custom {
    width: 16px;
    height: 16px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    position: relative;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.multiselect-option input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.multiselect-option input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: -2px;
    left: 1px;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.select-all-option {
    font-weight: 600;
    color: var(--primary-color);
}

.select-all-option .checkbox-custom {
    border-color: var(--primary-color);
}

.multiselect-divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--spacing-xs) 0;
}

.option-label {
    flex: 1;
    color: var(--gray-900);
}

.option-count {
    font-size: 0.75rem;
    color: var(--gray-500);
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    min-width: 20px;
    text-align: center;
}

/* Selected OLTs (chips) */
.selected-olts-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.selected-olts-container.hidden {
    display: none !important;
}

.selected-olt-chip {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 8px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.chip-remove {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 14px;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.chip-remove:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Scrollbar styling for dropdown */
.multiselect-dropdown::-webkit-scrollbar {
    width: 4px;
}

.multiselect-dropdown::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.multiselect-dropdown::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-sm);
}

.multiselect-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}