.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background-color);
    z-index: 9999;

    transition: opacity 0.5s, visibility 0.5s;
}

.loader-hidden {
    opacity: 0;
    visibility: hidden;
}

.loader::after {
    content: "";
    width: 50px;
    height: 50px;
    border: 5px solid #0c0c1f;
    border-top-color: var(--accent-color);
    border-radius: 50%;

    animation: loading 0.5s ease-in-out infinite;
}

@keyframes loading {
    from {
        transform: rotate(0turn);
    }
    to {
        transform: rotate(1turn);
    }
}