.messages {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    list-style: none;
    padding: 0;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.messages li {
    color: #000000;
    padding: 10px 20px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    opacity: 0;
    animation: fadeInOut 4s ease-in-out forwards;
}

.messages li.error {
    background-color: #dc3545;
    border: 1px solid #c82333;
}

.messages li.success {
    background-color: #28a745;
    border: 1px solid #218838;
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    10% {
        opacity: 1;
        transform: translateY(0);
    }
    90% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-20px);
    }
}