Build a Treasure Adventure Platformer Game (PROMPT: SUPER ADVENTURE)

PROMPT: SUPER ADVENTURE — Treasure Adventure Platformer Game

ROLE: You are a professional Game Developer, Game Designer, and UI/UX Specialist.

TASK: Build a playable 2D Side-Scrolling Platformer adventure game inspired by Super Mario, using completely original character and environment graphics, playable directly on the web in Gemini Canvas.

1. GRAPHIC & VISUAL DESIGN
- High-quality 2D Cartoon blended with a 3D-look style — cute, bright, and polished like a premium game
- Vibrant color palette with soft shadows and smooth gradients
- Expressive chibi-proportioned character design (big head, compact body, lively facial expressions)
- Multi-layer Parallax Scrolling backgrounds featuring mountains, forests, clouds, waterfalls, and sky
- Smooth animations with dust puffs when running and sparkle bursts when collecting coins
- Distinctive custom-drawn sprites/graphics — never use plain rectangles or primitive shapes as final characters

2. GAMEPLAY
- Run left/right, jump, and leap across hazards and obstacles
- Collect gold coins, gems, stars, and treasure chests
- Stomp enemies from above to defeat them and earn points
- Include moving/spring platforms, secret blocks, bridges, and hidden treasure areas
- Power-Ups for speed boost, high jump, and temporary shield protection
- 3-heart life system, score counter, and stage timer
- Checkpoints and a goal flagpole/portal to clear each stage

3. LEVEL DESIGN
Create 5 stages with progressive difficulty:
1. Green Forest — Lush sunlit woodland
2. Candy World — Sweet pastel wonderland
3. Crystal Cave — Glowing underground cavern
4. Sky Kingdom — Floating cloud citadel
5. Lava Castle — Volcanic fortress with a final boss battle
Each stage must feature unique terrain, enemies, hazards, and visual themes.

4. USER INTERFACE
- Title screen with a bold game logo and START GAME button
- Level Select screen with stage previews and star ratings
- Top HUD bar showing Score, Coins, Hearts, and Time
- Pause, Restart, and Sound On/Off controls
- Victory screen with fireworks and a 1–3 Star performance rating
- Game Over screen with quick Retry button

5. CONTROLS
Desktop
- A / D or Left / Right Arrow keys to move
- Spacebar to jump (hold Spacebar for a higher jump)

Mobile & Touch
- Left-side directional buttons
- Large right-side Jump button
- Full touch input support and responsive layout

6. SOUND & EFFECTS
- Upbeat adventure BGM (synthesized via Web Audio API)
- Sound effects for jumping, collecting coins, hitting enemies, and clearing a stage
- Particle effects when collecting items
- Subtle camera shake on boss hits or impacts
- Smooth stage transition animations

7. TECHNICAL REQUIREMENTS
- Develop as a self-contained HTML5 game using JavaScript and HTML5 Canvas or Phaser 3
- Must be a genuinely playable game, not a static mockup or UI prototype
- Accurate collision detection, gravity, and character physics
- Smooth scrolling camera tracking the player
- Richly detailed procedural/SVG/Canvas sprites for characters, tiles, and items (no placeholder boxes)
- Graceful fallback if any external asset fails to load
- Save unlocked stages and high scores in Local Storage
- Verify walking, variable jumping, item collection, enemy stomping, win, and game-over states end-to-end

OUTPUT: Produce a complete, immediately playable game in Gemini Canvas with polished visuals, responsive controls, and full game loop. If output length is constrained, make Stage 1 (Green Forest) 100% complete and playable first, with clean hooks for Stages 2–5.