.popup-container {
    position: fixed;
    z-index: 1000;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    display: none;
    overflow: auto;
}

.popup-container.top-right { top: 20px; right: 20px; }
.popup-container.top-center { top: 20px; left: 50%; transform: translateX(-50%); }
.popup-container.top-left { top: 20px; left: 20px; }
.popup-container.middle-right { top: 50%; right: 20px; transform: translateY(-50%); }
.popup-container.middle-center { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.popup-container.middle-left { top: 50%; left: 20px; transform: translateY(-50%); }
.popup-container.bottom-right { bottom: 20px; right: 20px; }
.popup-container.bottom-center { bottom: 20px; left: 50%; transform: translateX(-50%); }
.popup-container.bottom-left { bottom: 20px; left: 20px; }

.popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .popup-container {
        width: 90% !important;
        height: auto !important;
    }
}