.cabecera {
    background: linear-gradient(90deg, #007bff 0%, #0056b3 100%);
    color: #ffffff;
    padding: 15px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.titulo {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 600;
}

.grupo {
    font-size: 1.1rem;
    margin: 0;
    font-weight: 400;
    opacity: 0.85;
}

.error-message {
    color: #dc3545;
    font-size: 0.85em;
    margin-top: 5px;
}