.subscribe-popup {
    position: fixed !important;
    inset: 0;
    background: rgba(0,0,0,.6);

    display: flex;
    align-items: center;
    justify-content: center;

    opacity: 0;
    visibility: hidden;
    transition: .3s ease;
    z-index: 1111;
}

.subscribe-popup.active {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    width: 320px;
    animation: scaleIn .3s ease;
}

@keyframes scaleIn {
    from { transform: scale(.8); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

.popup-success h3 { color: #28a745; }
.popup-exists  h3 { color: #ffc107; }
.popup-error   h3 { color: #dc3545; }