.cart-popup {
    position: fixed;
    right: 0;
    width: 350px;
    height: calc(100% - 60px);
    background-color: #fff;
    box-shadow: -2px 0 5px rgba(0,0,0,.1);
    transform: translateX(100%);
    transition: transform .3s ease-in-out;
    z-index: 1050;
    display: none;
}

/* Responsive full screen for mobile devices */
@media (max-width: 768px) {
    .cart-popup {
        width: 100% !important;
        height: calc(100% - 60px) !important;
        right: 0;
        left: 0;
        box-shadow: none;
        transform: translateX(100%);
    }
}

.cart-popup.show {
    transform: translateX(0);
    display: block;
}

.cart-container {
    padding: 20px;
    height: 100%;
    overflow-y: auto;
}

.cart-popup .close-cart {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    color: #333;
    cursor: pointer;
}