.language-btn {
    position: fixed;
    bottom: 15%;
    left: 2%;
    padding: 12px 24px;
    border-radius: 1.75rem;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
    background: #e00000;
    transition: all 0.3s ease;
    z-index: 900;
    display: none;
}

.language-btn:hover {
    background: #ffff00;
    color: #e00000;

    .lng-border-glow {
        background: conic-gradient(from 0deg,
                transparent 0%,
                transparent 0%,
                #ff0000,
                transparent 20%);
    }
}

.lng-border-mask {
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 1.75rem;
    width: 100%;
    height: 100%;
    padding: 2.5px;
    mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0) border-box;
    mask-composite: exclude;
}

.lng-border-glow {
    animation: rotateShine 3s linear infinite;
    background: conic-gradient(from 0deg,
            transparent 0%,
            transparent 0%,
            #ffffff,
            transparent 20%);
    position: absolute;
    top: 50%;
    left: 50%;
    width: 500px;
    height: 500px;
    transform: translate(-50%, -50%);
    transform-origin: 0 0;
}

@keyframes rotateShine {
    0% {
        transform: rotate(0deg) translate(-50%, -50%);
    }

    100% {
        transform: rotate(360deg) translate(-50%, -50%);
    }
}