.filter-group {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
}

    .filter-group h4 {
        margin-top: 0;
        margin-bottom: 10px;
    }

.filter-mode-options {
    margin-bottom: 10px;
}

    .filter-mode-options .radio {
        display: inline-block;
        margin-right: 20px;
    }

.action-buttons {
    margin-bottom: 20px;
}

    .action-buttons .btn {
        margin-right: 10px;
    }