.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: red;
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 9999;
    display: none;
}
.toast.show {
    display: block;
    opacity: 1;
}