:root{
    --clr-navy:#344952;
    --primary-clr:#6563ff;
    --secondary-clr:#c4c3fc;
    --light-line:#e4e2ed;
    --cell-width:22px;
    --light-text:#686673;
    --light-dot:#adaac0;
    --wall-clr:#0c3547;
    --path-clr:#fffe6a;
    --visited-clr:#40cee3;
}

.carret{
    display: block;
    aspect-ratio: 1;
    width: 14px;
    background: url(../assets/icon/caret-down.svg);
}

.wall{
    background-color: var(--clr-navy);
    animation: wallAnimation .5s ease-out forwards;
}

.path{
    background-color: var(--path-clr);
    animation: pathAnimation 1s ease-out forwards;
}

.unvisited{
    background-color: white;
    border: 1px solid var(--light-line);
}

.visited{
    background-color: var(--visited-clr);
    animation: visitedAnimation 1s ease-out forwards;
}

.btn{
    user-select: none;
    white-space: nowrap;
    cursor: pointer;
    border: none;
    outline: none;
    padding: 8px 16px;
    border-radius: 6px;
    background-color: var(--primary-clr);
    color: white;
    font-weight: 600;
    transition: .1s ease-in-out;
}

.source{
    background: url(../assets/icon/source.svg);
}
.target{
    background: url(../assets/icon/target.svg);
}

.icon{
    aspect-ratio: 1;
    width: 20px;
}

/* =================== animations =================== */

@keyframes wallAnimation {
    0% {
        transform: scale(.3);
        background-color: var(--wall-clr);
    }
    
    50% {
        transform: scale(1.0);
        background-color: var(--wall-clr);
    }
    100% {
        transform: scale(1.0);
        background-color: var(--wall-clr);
    }
}

@keyframes visitedAnimation {
    0% {
        transform: scale(.3);
        background-color: rgba(0, 0, 66, 0.75);
        border-radius: 100%;
    }

    50% {
        background-color: rgba(17, 104, 217, 0.75);
    }

    75% {
        transform: scale(1);
        background-color: rgba(0, 217, 159, 0.75);
    }

    100% {
        transform: scale(1);
        background-color: var(--visited-clr);

    }
}


@keyframes pathAnimation {
    0% {
        transform: scale(.6);
        background-color: var(--path-clr);
    }
    
    50% {
        transform: scale(1);
        background-color: var(--path-clr);
    }
    
    100% {
        transform: scale(1.0);
        background-color: var(--path-clr);
    }
}