/*
<div class="square-circle-1"></div>
<div class="square-circle-2"></div>
...
<div class="square-circle-10"></div>
*/

.square-circle-1 {
    width: 35px;
    aspect-ratio: 1;
    border: 3px solid #0094ff;
    animation: sc1 2s infinite;
}

@keyframes sc1 {
    0% {
        border-radius: 50% 50% 0 0
    }

    25% {
        border-radius: 0 50% 50% 0
    }

    50% {
        border-radius: 0 0 50% 50%
    }

    75% {
        border-radius: 50% 0 0 50%
    }

    100% {
        border-radius: 50% 50% 0 0
    }
}

.square-circle-2 {
    display: flex;
    gap: 5px;
    animation: sc2-0 1s infinite linear;
}

    .square-circle-2:before,
    .square-circle-2:after {
        content: "";
        width: 35px;
        aspect-ratio: 1;
        box-shadow: 0 0 0 3px inset #0094ff;
        animation: sc2-1 1s infinite linear both;
    }

    .square-circle-2:after {
        animation-direction: reverse;
    }

@keyframes sc2-0 {
    0% {
        transform: rotate(0deg)
    }

    80%, 100% {
        transform: rotate(180deg)
    }
}

@keyframes sc2-1 {
    0%, 20% {
        border-radius: 0
    }

    80%, 100% {
        border-radius: 50%
    }
}

.square-circle-3 {
    display: flex;
    gap: 5px;
}

    .square-circle-3:before,
    .square-circle-3:after {
        content: "";
        width: 35px;
        aspect-ratio: 1;
        box-shadow: 0 0 0 3px inset #0094ff;
        animation: 2s infinite linear;
        animation-name: sc3-1,sc3-2;
        animation-delay: -1s,0s
    }

    .square-circle-3:after {
        --s: -1;
    }

@keyframes sc3-1 {
    0% {
        border-radius: 50% 0 0 50%
    }

    25% {
        border-radius: 50% 50% 0 0
    }

    50% {
        border-radius: 0 50% 50% 0
    }

    75% {
        border-radius: 0 0 50% 50%
    }

    100% {
        border-radius: 50% 0 0 50%
    }
}

@keyframes sc3-2 {
    0% {
        transform: scaleX(var(--s,1)) rotate(0deg)
    }

    100% {
        transform: scaleX(var(--s,1)) rotate(-360deg)
    }
}

.square-circle-4 {
    height: 35px;
    aspect-ratio: 1;
    border: 3px solid #0094ff;
    animation: sc4 2s infinite;
}

@keyframes sc4 {
    0% {
        aspect-ratio: 1;
        border-radius: 50px
    }

    25% {
        aspect-ratio: 2;
        border-radius: 50px
    }

    50% {
        aspect-ratio: 2;
        border-radius: 0
    }

    75% {
        aspect-ratio: 1;
        border-radius: 0
    }

    100% {
        aspect-ratio: 1;
        border-radius: 50px
    }
}

.square-circle-5 {
    width: 65px;
    aspect-ratio: 1;
    position: relative;
}

    .square-circle-5:before,
    .square-circle-5:after {
        content: "";
        position: absolute;
        border-radius: 50px;
        box-shadow: 0 0 0 3px inset #0094ff;
        animation: sc5 2.5s infinite;
    }

    .square-circle-5:after {
        animation-delay: -1.25s;
        border-radius: 0;
    }

@keyframes sc5 {
    0% {
        inset: 0 35px 35px 0
    }

    12.5% {
        inset: 0 35px 0 0
    }

    25% {
        inset: 35px 35px 0 0
    }

    37.5% {
        inset: 35px 0 0 0
    }

    50% {
        inset: 35px 0 0 35px
    }

    62.5% {
        inset: 0 0 0 35px
    }

    75% {
        inset: 0 0 35px 35px
    }

    87.5% {
        inset: 0 0 35px 0
    }

    100% {
        inset: 0 35px 35px 0
    }
}

.square-circle-6,
.square-circle-6:before,
.square-circle-6:after {
    width: 35px;
    aspect-ratio: 1;
    box-shadow: 0 0 0 3px inset #0094ff;
    position: relative;
    animation: sc6 1.5s infinite 0.5s;
}

    .square-circle-6:before,
    .square-circle-6:after {
        content: "";
        position: absolute;
        left: calc(100% + 5px);
        animation-delay: 1s;
    }

    .square-circle-6:after {
        left: -40px;
        animation-delay: 0s;
    }

@keyframes sc6 {
    0%,55%,100% {
        border-radius: 0
    }

    20%,30% {
        border-radius: 50%
    }
}

.square-circle-7,
.square-circle-7:before,
.square-circle-7:after {
    width: 35px;
    aspect-ratio: 1;
    box-shadow: 0 0 0 3px inset #0094ff;
    position: relative;
    animation: 1.5s infinite 0.5s;
    animation-name: sc7-1,sc7-2;
}

    .square-circle-7:before,
    .square-circle-7:after {
        content: "";
        position: absolute;
        left: calc(100% + 5px);
        animation-delay: 1s,0s;
    }

    .square-circle-7:after {
        left: -40px;
        animation-delay: 0s,1s;
    }

@keyframes sc7-1 {
    0%,55%,100% {
        border-top-left-radius: 0;
        border-bottom-right-radius: 0
    }

    20%,30% {
        border-top-left-radius: 50%;
        border-bottom-right-radius: 50%
    }
}

@keyframes sc7-2 {
    0%,55%,100% {
        border-bottom-left-radius: 0;
        border-top-right-radius: 0
    }

    20%,30% {
        border-bottom-left-radius: 50%;
        border-top-right-radius: 50%
    }
}

.square-circle-8 {
    width: 75px;
    aspect-ratio: 1;
    display: grid;
}

    .square-circle-8:before,
    .square-circle-8:after {
        content: "";
        grid-area: 1/1;
        width: 35px;
        aspect-ratio: 1;
        box-shadow: 0 0 0 3px #fff inset;
        filter: drop-shadow(40px 40px 0 #fff);
        animation: sc8 2s infinite alternate;
    }

    .square-circle-8:after {
        margin: 0 0 0 auto;
        filter: drop-shadow(-40px 40px 0 #fff);
        animation-delay: -1s;
    }

@keyframes sc8 {
    0%,10% {
        border-radius: 0
    }

    30%,40% {
        border-radius: 50% 0
    }

    60%,70% {
        border-radius: 50%
    }

    90%,100% {
        border-radius: 0 50%
    }
}

.square-circle-9 {
    width: 75px;
    aspect-ratio: 1;
    --g1: conic-gradient(from 90deg at 2px 2px,#0000 90deg,#fff 0);
    --g2: conic-gradient(from -90deg at 13px 13px,#0000 90deg,#fff 0);
    background: var(--g1),var(--g1),var(--g1),var(--g1),var(--g1),var(--g1),var(--g1),var(--g1), var(--g2),var(--g2),var(--g2),var(--g2),var(--g2),var(--g2),var(--g2),var(--g2);
    background-size: 15px 15px;
    background-repeat: no-repeat;
    animation: sc9 1s infinite alternate linear;
}

@keyframes sc9 {
    0%,30% {
        background-position: 0 0,50% 0,100% 0,0 50%,100% 50%,0 100%,50% 100%,100% 100%
    }

    70%,100% {
        background-position: 15% 15%,50% 0,85% 15%,0 50%,100% 50%,15% 85%,50% 100%,85% 85%
    }
}

.square-circle-10 {
    width: 75px;
    aspect-ratio: 1;
    --g: radial-gradient(farthest-side,#0000 calc(95% - 2px),#fff calc(100% - 2px) 98%,#0000 101%);
    background: var(--g),var(--g),var(--g),var(--g),var(--g),var(--g),var(--g),var(--g);
    background-size: 15px 15px;
    background-repeat: no-repeat;
    animation: sc10 1s infinite alternate linear;
}

@keyframes sc10 {
    0%,30% {
        background-position: 0 0,50% 0,100% 0,0 50%,100% 50%,0 100%,50% 100%,100% 100%
    }

    70%,100% {
        background-position: 15% 15%,50% 0,85% 15%,0 50%,100% 50%,15% 85%,50% 100%,85% 85%
    }
}