.app-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(1, 1, 1, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 8;
    pointer-events: none;
}
.app-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}