That mockup is aesthetically pleasing, but from a usability perspective it's terrible: every UI element looks like a button. The progress bar (?) looks like a slider. How do users know which elements they're supposed to interact with? Why do we make the same mistakes over and over?
[1] https://miro.medium.com/max/3200/1*gza8htfpZ-5eDabA7_kTJw.pn...