#popupOverlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
    z-index: 9999;
}


#popupBox {
    background: #fff;
    padding: 25px;
    width: 350px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

#popupBox p {
    font-size: 12px;
    color: black;
}

#popupBox input {
    width: 90%;
    padding: 10px;
    margin-top: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#popupBox button {
    margin-top: 12px;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

#popupBox button.close {
    margin-top: 12px;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

#submitEmailBtn {
    background: #28a745;
    color: #fff;
}

#errorMsg {
    color: red;
    font-size: 0.9em;
    margin-top: 8px;
}