.card {
    position: relative;
    padding: 24px;
    box-sizing: border-box;
    overflow: hidden;

    background: linear-gradient(
        45deg,
        rgba(110, 35, 35, 0.6) 0%,
        rgba(52, 52, 52, 0.3) 100%
    );
    border: solid 1px rgba(101, 32, 103, 0.2);
    border-radius: 1em;
    box-shadow: 0 0 24px -5px rgba(209, 65, 70, 0.25);
}

.card-alt {
    background: linear-gradient(
        -45deg,
        rgba(35, 35, 110, 0.6) 0%,
        rgba(52, 52, 52, 0.3) 100%
    );
    border: solid 1px rgba(103, 32, 101, 0.2);
    border-radius: 1em;
    box-shadow: 0 0 24px -5px rgba(70, 65, 209, 0.25);
}

.card:not(:hover) .card-highlight {
    opacity: 0;

    transition: opacity 250ms ease-in-out;
}

.card-highlight {
    opacity: 0.3;
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    z-index: -1;
    filter: blur(500px);

    transition: opacity 250ms ease-in-out;
}

.card-overlay {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}