Title: Add keyboard width adjustment for tablets in floating mode, improve long-press visibility of symbols in dark/black theme, and add an option to keep floating mode always enabled.

[itsacerex]

Hi,

On tablets, the keyboard feels too wide. Please add an option to adjust/reduce keyboard width so it’s more comfortable to use.

Also, in the black/dark theme, when long-pressing a key, the selected symbol is not clearly visible. The contrast is too low. Please improve its visibility.

Thanks.