โ๏ธ Firebase not configured. Open this file in a text editor and fill in your Firebase credentials in the FIREBASE_CONFIG section near the top of the <script>.
How it works:
1. Create a game โ share the 4-letter code with friend
2. Friend opens the same link & enters the code
3. Each player fills their own secret 5ร5 grid
4. Take turns tapping โ numbers break on both phones!
5. First to complete 5 lines โ BINGO wins! ๐