/* Fondo general */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom right, #003399, #FF0099);
    color: #FFFFFF;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

/* Contenedor principal centrado */
.principal {
    background-color: #FFFFFF;
    color: #003399;
    padding: 30px 40px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 51, 153, 0.3);
    text-align: center;
    width: 300px;
}

/* Título */
.principal h1 {
    margin-bottom: 20px;
    color: #FF0099;
}

/* Campos de entrada */
input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #0033FF;
    border-radius: 5px;
    box-sizing: border-box;
}

/* Botón */
input[type="button"] {
    background-color: #FF0099;
    color: #FFFFFF;
    border: none;
    padding: 10px 20px;
    margin-top: 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="button"]:hover {
    background-color: #0033FF;
}

/* Mensaje */
#imprimeMensaje {
    margin-top: 20px;
    color: #FFFFFF;
    font-weight: bold;
}