:root{
    box-sizing: border-box;
}
*, *::after, *::before{
    box-sizing: inherit;
    margin: 0; 
    padding: 0; 
}

.product img{
    max-width: 100%;
    min-width: 20rem;
}
.container{
    display: grid;
    place-items: center;
    height: 100vh; 
    width: 100vw; 
    padding: 0 2.5rem;
    background-color: hsl(30, 50%, 75%);
}
.product::after{
    content: "";
    position: absolute;
    top: 0; 
    right: 0; 
    bottom: 0; 
    left: 0; 
    background-color: hsl(30, 50%, 75%);
    /* opacity: 0.5; */
    mix-blend-mode: hue;                

}

.product-nav{
    position: relative;
}
.product-nav label{
    display: inline-block;
    width: 5vmin; 
    height: 5vmin; 
    background-color: hsl(30, 50%, 75%);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 0 0.5em #fff,
                0.5em 0.5em 1em -0.15em rgba(0, 0, 0, 0.25);
    transition: 200ms all ease-in-out;
}

.product-nav label + label{
    margin-left: 2.5em; 
}

.product-nav label:nth-of-type(1), 
#color-1:checked ~ .product::after{
    background-color: hsl(30, 50%, 75%);
}
.product-nav label:nth-of-type(2), 
#color-2:checked ~ .product::after{
    background-color: hsl(120, 50%, 75%);
}
.product-nav label:nth-of-type(3),
#color-3:checked ~ .product::after{
    background-color: hsl(210, 50%, 75%);
}
.product-nav label:nth-of-type(4),
#color-4:checked ~ .product::after{
    background-color: hsl(300, 50%, 75%);
}


#color-1:checked ~ .product-nav > label:nth-of-type(1), 
#color-2:checked ~ .product-nav > label:nth-of-type(2),
#color-3:checked ~ .product-nav > label:nth-of-type(3),
#color-4:checked ~ .product-nav > label:nth-of-type(4){
    transform: scale(1.3);
}

#color-1:checked ~ .product-nav > label:nth-of-type(1){
    background-color: hsl(30, 70%, 45%);
}
#color-2:checked ~ .product-nav > label:nth-of-type(2){
    background-color: hsl(120, 70%, 45%);
}
#color-3:checked ~ .product-nav > label:nth-of-type(3){
    background-color: hsl(210, 70%, 45%);
}
#color-4:checked ~ .product-nav > label:nth-of-type(4){
    background-color: hsl(300, 70%, 45%);
}