.message-card {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: 15px 20px;
    border-radius: 8px;
    margin-top: 10px;
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: fadeOut 5s forwards;
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.message-card.success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.message-card.error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.message-card.warning {
    background-color: #fff3cd;
    color: #856404;
    border-color: #ffeeba;
}

.message-card.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

@keyframes fadeOut {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    80% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-20px);
        display: none;
    }
}

/* Botão de fechar */
.message-card .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 20px;
    color: inherit;
    cursor: pointer;
    outline: none;
}