mdb-ui-kit/less/radios.less

// main: material.less

.form-horizontal .radio {
    margin-bottom: 10px;
}
.radio {
    label {
        cursor: pointer;
        padding-left: 45px;
        position: relative;
        span {
            display: block;
            position: absolute;
            left: 10px;
            top: 2px;
            transition-duration: 0.2s;
        }
        .ripple {
            background-color: @lightbg-text;
            left: 0;
            top: -8px;
            height: 34px;
            width: 34px;
            border-radius: 100%;
            transform: scale(0);
            transition: transform .1s, opacity 0.2s 0.4s;
            z-index: 1;
            opacity: 0.2;
            margin: 0;
            &.animate {
                transform: scale(1);
                opacity: 0;
            }
        }
        .circle {
            border: 2px solid @lightbg-text;
            height: 15px;
            width: 15px;
            border-radius: 100%;
        }
        .check {
            height: 15px;
            width: 15px;
            border-radius: 100%;
            background-color: @radio-default;
            transform: scale(0);
        }
    }
    .variations(~" input[type=radio]:checked ~ .check", background-color, @radio-default);
    .variations(~" input[type=radio]:checked ~ .circle", border-color, @radio-default);

    input[type=radio][disabled] ~ .check,
    input[type=radio][disabled] ~ .circle {
        opacity: 0.5;
    }

    input[type=radio] { display: none; }
    input[type=radio]:checked ~ .check {
        transform: scale(0.55);
    }
    input[type=radio][disabled] ~ .circle {
        border-color: @lightbg-text;
    }
    input[type=radio][disabled] ~ .check {
        background-color: @lightbg-text;
    }

}