.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #333;
    color: #fff;
    padding: 12px 18px;
    border-radius: 6px;
    opacity: 0;
    transition: 0.3s ease;
    z-index: 9999;
}

.toast.show {
    opacity: 1;
}

.toast.success { background: #28a745; }
.toast.error { background: #dc3545; }