## Input Interface Improvements
- Remove field borders and cursor for natural typing experience
- Hide input field completely off-screen, display numbers in clean text area
- Add click-to-focus on display area to maintain keyboard interaction
- Use monospace font with letter spacing for clear number display
## Memory Card Sizing Improvements
- Make cards viewport-aware using min(85vw, 700px) and min(50vh, 400px)
- Add responsive breakpoints for small screens to prevent scrolling
- Ensure entire game fits in viewport without requiring scroll
- Scale SVG content to fill available card space
## Penalty Scoring System
- Track incorrect guesses and apply 5-point penalty per wrong guess
- Display score breakdown showing base score, penalties, and final score
- Update results display to clearly show wrong guesses with point deduction
- Encourage careful thinking rather than random guessing
## User Experience
- Numbers appear naturally as user types without form-like interface
- Large but viewport-constrained cards for optimal memorization
- Fair scoring that rewards accuracy and penalizes careless guessing
- Responsive design works across all screen sizes
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Thomas Hallock