.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.375rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
    cursor: pointer;
}

.alert-success {
    background-color: #E8F5E9;
    border: 1px solid #A5D6A7;
    color: #2E7D32;
}

.alert-error {
    background-color: #FFEBEE;
    border: 1px solid #FFCDD2;
    color: #C62828;
}

.alert-warning {
    background-color: #FFF3E0;
    border: 1px solid #FFCC80;
    color: #EF6C00;
}

.alert-info {
    background-color: #E3F2FD;
    border: 1px solid #90CAF9;
    color: #1565C0;
}

.alert.fade-out {
    opacity: 0;
}