Mobile-friendly accounts-ui?

Hi,

Is there an accounts-ui type of package that works out of the box with mobile? In that the login/sign-up/forgot-password is full screen?

I tried to modify some css to make them full screen, but it turned out a bit of a headache (caused a bit of a ripple effect into “Change password”, etc), and in any case, this seems like something lots of people would want out of the box.