.loader {
    height: min(33vh, 90vw);
    aspect-ratio: 1;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background-color: #003dff;
    border-radius: 50%;
    box-shadow: 0 0 30px 4px rgba(0, 0, 0, 0.5) inset,
        0 5px 12px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    z-index: 98;
}

.cover {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0px;
    z-index: 98;
    top: 0px;
    backdrop-filter: blur(10px);
    display: none;
}

.cover > h1 {
    top: 70%;
    position: relative;
    text-align: center;
}

.loader:before,
.loader:after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 45%;
    top: -40%;
    background-color: #121212;
    animation: wave 5s linear infinite;
}

.loader:before {
    border-radius: 30%;
    background: rgba(255, 255, 255, 0.4);
    animation: wave 5s linear infinite;
}

@keyframes wave {
    0% {
        transform: rotate(0);
    }

    100% {
        transform: rotate(360deg);
    }
}