Conway's Game of Life · glm-4.5

The user wants me to create a single-page web app that implements Conway's Game of Life with the following features:
1. Full-screen canvas grid
2. Click-and-drag to toggle cells
3. Play/pause control
4. Step control (advance one generation)
5. Randomize control (fill grid randomly)
6. Clear control (empty the grid)

Let me create this as a self-contained index.html file with inline CSS and JavaScript, no external resources or CDNs.

Conway's Game of Life rules:
- Any live cell with fewer than 2 live neighbors dies (underpopulation)
- Any live cell with 2 or 3 live neighbors lives on
- Any live cell with more than 3 live neighbors dies (overpopulation)
- Any dead cell with exactly 3 live neighbors becomes a live cell (reproduction)

I'll implement:
- A canvas that fills the screen
- Grid-based cell rendering
- Mouse event handling for click-and-drag toggling
- Animation loop for play/pause
- Control buttons

Let me write this complete file.

Done! I've created a complete, self-contained Conway's Game of Life web app in a single `index.html` file. 

The app features:
- Full-screen canvas grid with 8px cells
- Click-and-drag to draw or erase cells
- Play/Pause button with visual indicator
- Step button to advance one generation
- Randomize button to fill the grid randomly
- Clear button to reset the grid
- Live stats showing generation count and population
- Subtle grid lines for visual guidance
- Smooth animation with 50ms delay between generations
- Responsive to window resizing
- All CSS and JS inline, no external dependencies

The game uses the standard Conway's Game of Life rules with toroidal wrapping (edges connect to opposite sides).