:root {
    --black: #1A1A1A;
    --white: #F4F8FD;
    --grey: #565B61;
    --grey-blue: #334B6D;
    --dark-blue: #2D3459;
    --blue: #5577AA;
    --light-blue: #D8E2EF;
    --orange: #E6642F;
    --light-orange: #EC946F;
    --mango: #EB9526;
    --banana: #EFB250;
}

body {
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    background: var(--white);
    color: var(--black);
}

h1, h4 {
    color: var(--dark-blue);
}

.container {
    margin-bottom: 40px;
    padding: 10px;
}

.container * {
    margin-bottom: 12px;
}

.btn-primary {
    background: var(--blue);
}

.btn-primary:hover {
    background: var(--dark-blue);
}

@media (min-width: 992px) {
    #selectionArea {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }
    #originalListCol {
        order: 2;
    }
    #leftListCol, #rightListCol {
        order: 1;
    }
}

@media (max-width: 991px) {
    #selectionArea {
        flex-direction: column;
    }
}

.list-group-item {
    transition: background-color 0.3s ease;
}