I'm new on Inkscape so my need is pretty basic but i can't figure it out right now and it ***** me off

Here we are :
The font of my picture is a color gradient.
I have shapes (curves lines) on top and I have another shape with a white font.
I want my curves lines on the top of the (font + the white shape)
I want my curves lines with the colors of the gradient font beneath them.
I guess it with the cutting tool but like i said, i did not succeed.
I hope that I will be understood.
Thanks for the answer !