Q: Toggle Brush/Collect mode
B: Switch to Brush mode
N/M: Cycle through cell types (next/prev)
Brush Mode: Place cells using your resources
Collect Mode: Click cells to gather resources
Void: Free to place (erases cells)
Left-click + drag: Pan the map
Mouse wheel: Zoom in/out
Hover over cell: Show properties popup
Right-click on cell: Context menu
Debug: Show viewport bounds