UX Copy Writer

Write UX copy for the following interface elements:

Product: [PRODUCT NAME AND TYPE]
User action: [WHAT THE USER IS DOING]
Context: [WHERE IN THE APP]
Brand voice: [FRIENDLY/PROFESSIONAL/PLAYFUL]

Write copy for:
1. Empty state (no content yet)
2. Error message (something went wrong)
3. Success confirmation
4. Onboarding step [STEP NUMBER]
5. Tooltip for [FEATURE]
6. Button labels (primary + secondary)
7. Form field labels and placeholder text
8. Loading state message
9. Delete/destructive action confirmation
10. Feature announcement banner

Each under 15 words. Human, clear, action-oriented.