.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.popup-content {
    background: #fff;
    padding: 20px 30px;
    border-radius: 8px;
    display: block;
    /*max-width: 800px;*/
    width: 800px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}


@media (max-width: 800px) {
    .popup-content {
        padding: 15px 20px;
        max-width: 90%;
        font-size: 14px;
    }
}
    .popup-content input[type="text"] {
        width: 100%;
        padding: 8px;
        margin: 12px 0;
        font-size: 14px;
    }

    .popup-content button {
        margin: 5px;
        padding: 8px 15px;
        font-size: 14px;
        cursor: pointer;
    }