HELIOS

Cinevva's analyzer read this game's design doc and its source, then wrote the brief below. "Make your own" hands it to the game creator as your opening message, so you start from a real spec rather than a one-line idea.

Create a 3D solar electric vehicle showroom and test drive simulation from a third-person chase camera perspective. The player controls a futuristic sports sedan called "HELIOS" with a deployable solar roof system. Camera follows 4.8 units behind the car at 2.05 units height, looking forward toward the vehicle at a dynamic angle.

**Vehicle & Solar System:**
The car is a sleek sports sedan model (sedan-sports.glb from Kenney car kit) positioned on a dark blue showroom plinth with cyan trim. The car features three distinct systems:
1. A deployable solar panel array on the roof - center panel (0.66×0.035×1.18m) always visible in metallic blue with emissive glow (color: #164f82, emissive #0a4f72, intensity 1.4). Two wing panels (0.5×0.035×1m each) with silver frames that fold out from the sides when Space is pressed or parking mode is activated. Wings rotate outward 0.82 radians and extend 0.25m sideways while the entire array lifts 0.75m and tilts forward slightly. Smooth lerp animation.
2. Dual battery system (visible in tech view only) - side battery (0.16×0.35×0.9m orange glowing box at x:-0.95) and front hood battery (0.7×0.12×0.55m orange glowing box above hood). Material: #ffad42 with #6d2b00 emissive glow at intensity 1.2, 90% opacity.
3. Animated headlights - two cyan-white emissive boxes (0.28×0.12×0.05m) at front corners, pulsing gently. In night mode, emit SpotLight beams (color #bbefff, intensity 3.8, range 24, angle π/7).

**Driving Controls:**
W/↑ accelerates (max speed 2.25 forward), S/↓ brakes (max -0.42 reverse). A-D/←→ steer. Speed affects turn radius. HUD displays speed as abs(speed)×18 km/h. Friction and drag constantly applied. Steering wheel inside cockpit rotates with input (visible when tech view toggled). Position wraps at boundaries: x ±33, z ±28.

**Track Environment:**
Rectangular test loop on dark blue ground (#102235). Four connected road segments (70×10m horizontal at z±25, 10×40m vertical at x±30) in dark gray (#252d38). Yellow lane dashes every 6 units. Gray barriers (5×0.9×0.3m and 0.3×0.9×5m) line the outer edges. Showroom plinth at origin (15×0.24×12m) with cyan trim ring. 12 pine trees (2.4× scale) placed around perimeter. Dark blue-gray fog (color #081525) from 28 to 115 units.

**Charging Stations:**
Four identical HELIOS charging stations at positions [(-12,-25), (12,-25), (-30,12), (30,-12)]. Each has:
- Glowing cyan circular pad (1.35 radius, 0.1 height) at ground level, color #39c6dd with emissive #0c6e86
- Dark blue pedestal (0.55×1.55×0.42m) with glowing screen (0.38×0.32×0.04m) showing cyan-teal interface (#9fffe9, emissive #2de3cf, intensity 1.7-3.5 when active)
- Canopy roof (2.8×0.12×1.7m) at 2.55m height supported by two metallic posts
- Decorative cable (torus) and backlit sign panel
When car within 2.5 units of pad, screen glows brighter and HUD shows "HELIOS charging station nearby · hold brake to charge". Holding brake replenishes energy +8/sec and range +1.5/sec.

**Energy & Day/Night System:**
Energy starts at 100%, range at 420 km. Driving depletes energy (0.18/sec at night, 0.12/sec in day). Range = 420 - (distance×0.02 % 280) + conditional modifiers. Solar panels deployed in daylight restore energy +0.42/sec and range +0.18/sec. Press N to toggle day/night: night mode changes sky to #020611, dims all lights (sun 0.35, hemi 0.45), and increases headlight intensity to 3.8. Night mode label reads "Night drive · solar storage mode", day shows "Daylight showroom · ready to drive".

**Parking Mode:**
Press P to activate parking mode. Car speed forced to 0, solar wing panels automatically deploy and stay deployed. Mode text changes to "Daylight parking · solar recharge active" or "Night parking · battery storage mode". Release parking to allow manual panel control again.

**Tech View:**
Press Tech view button to reveal labeled battery zones. Side and hood batteries become visible with orange glow. Four callout labels appear on screen (CSS positioned, not 3D labels): "SOLAR ROOF ARRAY", "SIDE BATTERY MODULE", "FRONT HOOD BATTERY", "ADAPTIVE HEADLIGHTS" with cyan borders and connector lines. Mode text becomes "HELIOS technical inspection". Toggle off to hide.

**HUD Elements:**
Top-left panel shows brand "HELIOS" in cyan uppercase, subtitle "Solar electric concept · virtual test drive". Top-right stats panel displays Speed (km/h), Range (km), Energy (%). Top-center shows current mode text. Right panel shows "ENERGY ARCHITECTURE" with two horizontal bars: cyan-to-teal gradient for solar (width varies by night/day: 18% night, 76% day), orange-to-yellow gradient for battery (width = energy%). Bottom-left: four circular control buttons (left/brake/accel/right). Bottom-right: three rectangular buttons (Tech view/Parking/Night). Bottom-center hint text shows all controls. Station message appears top-center when near charging pad.

**Lighting:**
Hemisphere light (#9ddcff sky, #1a2333 ground, intensity 1.7 day / 0.45 night). Directional sun at (-25,35,20), color #ffe4b0, intensity 2.2 day / 0.35 night, casts soft shadows. Scene fog matches sky color. Dark blue-gray ground plane receives shadows. Night mode creates atmospheric low-light environment with car headlights as main illumination.

**Intro Sequence:**
Game starts with overlay screen: centered card with "HELIOS" title (78px, 0.12em spacing), subtitle "Solar mobility, designed for tomorrow", credit "Created by Shrihan & Tirth". Four-step quick start manual explains solar array, parking mode, daylight recharge, and night mode. "Start HELIOS guide" button dismisses overlay and triggers speech synthesis narration ("Welcome to HELIOS..."). Guide button reopens full manual overlay with detailed instructions and customer testimonial quote.

**Visual Style:**
Low-poly 3D with smooth shading, dark blue-cyan color palette, emissive glows on tech elements, soft shadows, ACES filmic tone mapping at 1.15 exposure. Futuristic showroom aesthetic with clean geometric shapes, glass-like transparency effects, and cyan accent lighting. UI uses dark panels with backdrop blur, cyan borders, and sans-serif typography. All measurements in meters, FOV 68 degrees.