Mars Greenhouse Life-Support Balance (2D)

The 3D original renders the greenhouse's cabin-pressure, water-recycling and crop-area sliders as three glowing metric bars orbited by a particle ring — a snapshot dashboard rather than a running system. This 2D companion replaces that with the real thing: a closed-loop model that integrates crew oxygen consumption against crop photosynthesis, carbon-dioxide production against crop uptake (via a Michaelis-Menten saturation curve), and water demand against the recycling rate you set, sol by sol, on a scrolling four-line chart. Crop biomass grows logistically toward a ceiling set by your crop area, gated by cabin pressure (which scales gas-exchange efficiency), a simulated day/night light cycle, CO₂ availability and how much water is actually left in the 180 m³ reserve — so pushing the recycling rate too low or the crop area too high produces a visible, numeric decline toward "WARNING" and "CRITICAL" status instead of a static bar chart.