* {
    margin: 0;
    box-sizing: border-box;
    padding: 0;
    font-family: "Roboto";
    font-size: 15px;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url('../img/fondo.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.main-body {
    border: 2px solid white;
    border-radius: 20px;
    padding: 40px;
    background-color: rgba(0, 0, 0, 0); /* Fondo semi-transparente */
    width: 90%;
    max-width: 500px; /* Para que no sea muy ancho en pantallas grandes */
}

.tituloUsil {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#logoUsilBlanco {
    width: 120px;
    height: 120px;
}

#convalidaciones {
    width: 250px;
    height: 35px;
}

.form {
    display: flex;
    flex-direction: column;
    margin-top: 40px;
}

.formUsuario,
.formContrasena {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.labelCredenciales {
    color: #fff;
    font-size: 18px;
}

.credenciales {
    width: 100%; /* Se ajusta al contenedor */
    max-width: 450px;
    padding: 12px 15px;
    border: 0;
    border-radius: 15px;
}

.olvidasteContra {
    color: #fff;
    text-decoration: none;
    text-align: center;
    display: block;
    margin-top: 10px;
}

#credencialesSubmit {
    width: 100%;
    max-width: 450px;
    padding: 12px;
    border: 0;
    border-radius: 15px;
    background-color: #020966;
    color: #fff;
    font-size: 18px;
    border: 2px solid #989898;
    cursor: pointer;
    transition: background-color 0.3s;
}

#credencialesSubmit:hover {
    background-color: #001f7a;
}

/* ---- RESPONSIVE DESIGN ---- */
@media (max-width: 600px) {
    .main-body {
        padding: 30px;
        border-radius: 15px;
    }

    #logoUsilBlanco {
        width: 100px;
        height: 100px;
    }

    #convalidaciones {
        width: 200px;
        height: 30px;
    }

    .form {
        margin-top: 30px;
    }

    .credenciales {
        padding: 10px 12px;
        font-size: 14px;
    }

    #credencialesSubmit {
        padding: 10px;
        font-size: 16px;
    }

    .labelCredenciales {
        font-size: 16px;
    }
}