Word Entry Improvements - Character limit enforced: The word input now prevents entering more than 15 letters, stopping input at the limit instead of allowing overflow - Live character counter: A "Characters: 0/15" indicator shows how many letters have been entered, updating in real time - Instant invalid input feedback: Typing numbers or symbols immediately shows an error message and strips the invalid characters, rather than waiting until the Start Game button is pressed - Stable counter layout: The character counter uses a fixed-width number display so the text doesn't shift when the count changes between single and double digits