body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: black;
}
#fullscreen-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none;
}
#fullscreen-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none;
}
#play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 50px;
    cursor: pointer;
    display: none;
    z-index: 100;
}
#logo-overlay {
    position: absolute;
    right: 20px;
    bottom: 20px;
    width: 52px;
    height: auto;
    opacity: 0.7;
    cursor: pointer;
    z-index: 50;
    transition: opacity 0.3s;
    filter: drop-shadow(0 0 12px rgba(0,212,255,.4));
}
#logo-overlay:hover {
    opacity: 1;
    filter: drop-shadow(0 0 20px rgba(0,212,255,.7));
}
#logo-overlay svg {
    display: block;
    width: 100%;
    height: auto;
}