.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* yarı saydam beyaz */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* diğer içeriklerin üstünde */
}

    /* Logo animasyonu */
    .overlay img {
        width: 400px;
        height: auto;
        opacity: 0;
        clip-path: polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%);
        animation: revealFade 4s ease-in-out infinite;
    }

@keyframes revealFade {
    0% {
        opacity: 0;
        clip-path: polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%);
    }

    60% {
        opacity: 1;
        clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
    }

    80% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
    }
}