.hidden {
    opacity: 0;
    pointer-events: none;
}

.page-content.hidden {
    opacity: 0;
    pointer-events: none;
}

.mask-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.mask-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.mask-overlay.show {
    display: block;
}

.desktop-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background-color: #0078d4;
    color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    z-index: 1000000;
    text-align: center;
    min-width: 300px;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.desktop-alert.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    /*display: block;*/
}

.desktop-alert.hidden {
    opacity: 0;
    pointer-events: none;
}

.desktop-alert p {
    margin: 0;
    font-size: 21px;
    line-height: 1.5;
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}