:root {
    --card-line-height: 1.2em;
    --card-padding: 1em;
    --card-radius: 0.5em;
    --color-green: #00a14e;
    --color-gray: #e2ebf6;
    --color-dark-gray: #c4d1e1;
    --radio-border-width: 1px;
    --radio-size: 1.5em;
}

.grid {
    display: grid;
    grid-gap: var(--card-padding);
    margin: 0 auto;
    max-width: 60em;
    padding: 0;
}

@media (min-width: 42em) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.card {
    background-color: #fff;
    border-radius: var(--card-radius);
    position: relative;

}

.radio {
    font-size: inherit;
    margin: 0;
    position: absolute;
    right: calc(var(--card-padding) + var(--radio-border-width));
    top: calc(var(--card-padding) + var(--radio-border-width));
}

@supports (-webkit-appearance: none) or (-moz-appearance: none) {
    .radio {
        -webkit-appearance: none;
        -moz-appearance: none;
        background: #fff;
        border: var(--radio-border-width) solid var(--color-gray);
        border-radius: 50%;
        cursor: pointer;
        height: var(--radio-size);
        outline: none;
        transition: background 0.2s ease-out, border-color 0.2s ease-out;
        width: var(--radio-size);
    }
    .radio::after {
        border: var(--radio-border-width) solid #fff;
        border-top: 0;
        border-left: 0;
        content: "";
        display: block;
        height: 0.75rem;
        left: 25%;
        position: absolute;
        top: 50%;
        transform: rotate(45deg) translate(-50%, -50%);
        width: 0.375rem;
    }
    .radio:checked {
        background: var(--color-green);
        border-color: var(--color-green);
    }

    .card:hover .radio {
        border-color: var(--color-dark-gray);
    }
    .card:hover .radio:checked {
        border-color: var(--color-dark-gray);
    }
}
.plan-details {
    border: var(--radio-border-width) solid var(--color-gray);
    border-radius: var(--card-radius);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    padding: var(--card-padding);
    transition: border-color 0.2s ease-out;
}

/*.card:hover .plan-details {
    border-color: var(--color-dark-gray);
}*/

.radio:checked ~ .plan-details {
    border-color: var(--color-green);
}

.radio:focus ~ .plan-details {
    box-shadow: 0 0 0 2px var(--color-dark-gray);
}

.radio:disabled ~ .plan-details {
    color: var(--color-dark-gray);
    cursor: default;
}

.radio:disabled ~ .plan-details .plan-type {
    color: var(--color-dark-gray);
}

.card:hover .radio:disabled ~ .plan-details {
    border-color: var(--color-gray);
    box-shadow: none;
}

.card:hover .radio:disabled {
    border-color: var(--color-gray);
}

.plan-type {
    color: var(--color-green);
    font-size: 1.5rem;
    font-weight: bold;
    line-height: 1em;
}

.plan-cost {
    font-size: 1.8rem;
    font-weight: bold;
    padding: 0.5rem 0;
}

.slash {
    font-weight: normal;
}

.plan-cycle {
    font-size: 2rem;
    font-variant: none;
    border-bottom: none;
    cursor: inherit;
    text-decoration: none;
}

.hidden-visually {
    border: 0;
    clip: rect(0, 0, 0, 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}