Password generator whit Tailwind and JavaScript vanilla - only desktop

What are you most proud of, and what would you do differently next time?

I'm proud of the entire script. It's the first experience where most of the code is copied and adapted for my purpose. It was a lot of fun to understand others' code and find ways to use it in my case.

What challenges did you encounter, and how did you overcome them?

The biggest challenge was coloring the input range slider. After some research, I found out that it's an element of the shadow DOM. So, I came across a JavaScript code that changes the color, and I adapted it to my needs:

  input.style.background =
    "linear-gradient(to right, #A4FFAF 0%, #A4FFAF " +
    fillPercent +
    "%, rgb(15, 23, 42) " +
    fillPercent +
    "%)";
  output.textContent = val;
}

What specific areas of your project would you like help with?

Unfortunately, I've written many if statements both in the function to generate the password and in the function that checks the password strength. I know that a good refactoring is needed, but for now, I have no idea how to proceed.