Upgrade TailwindCSS to version 4

[landrade]

This PR upgrades TailwindCSS to version 4, following the instructions from the official upgrade guide.

[axzilla]

Hey Leanardo,

thank you very much for taking your time to contribute. I really appreciate that! I'll leave some comments on some of your chnages. I'm happy to discuss more on that specific topic.

Thanks,
Axel

[axzilla]

I did a quick test, but it seems that class changes are not reflected in the CSS!

[landrade]

I did a quick test, but it seems that class changes are not reflected in the CSS!

Hi @axzilla , I've just push the new version output.css. I didn't pay attention that needs to push the compiled version of css, but now it's ok =)

[axzilla]

Before we can merge this PR we have to fix the following:

• We want to use the standalone CLI, which brings the current issue: [v4] Standalone cli doesn't bundle tailwindcss js library tailwindlabs/tailwindcss#15235
• We want to use the CSS only config (is this even possible?) instead of the current JS config

[axzilla]

Why did you close this?

[landrade]

It closed automatically because I did a push force =S

I'm working on it today. I will reopen when it done ;)

[landrade]

@axzilla I upgraded to Tailwind v4 using a CSS configuration file. I tested it on the docs page and everything appears to be working correctly. The installation guide has not been updated yet.

[axzilla]

Great job man! Thank you, I really appreciate it! This is definitely one step forward!