Let me search for the globals.css file in your project:

Found the issue! At line 54, there's an invalid Tailwind class border-white/12 which doesn't exist. Tailwind only supports opacity values in increments of 5 (10, 15, 20, etc.). I'll fix this by changing it to border-white/10:

Now I need to fix the border-white/12 reference in the .message-input-container class:

Now I'll check for the third occurrence in the .message-textarea class:

Fixed! The error was caused by invalid Tailwind opacity values. I replaced all instances of border-white/12 with border-white/10, since Tailwind CSS only supports opacity values in increments of 5 (5, 10, 15, 20, etc.). The changes were made in three class definitions that were using the non-existent class, and the build should now compile successfully.