I've created a complete surfing game with all the requested features:

**Core Features:**
- 🌊 Procedural wave generation with realistic physics
- 🏄 Physics-based balance and momentum controls
- 🎯 Comprehensive trick system (Cutback, Snap, Floater, Air, 360, Barrel rides)
- 🏝️ 4 locations (Hawaii, California, Australia, Tahiti) with different wave characteristics
- 🏄 4 board types with unique stats (Shortboard, Longboard, Fish, Gun)
- 🌤️ Weather conditions affecting wave behavior
- 📊 Combo system with score multipliers
- 🔮 Wave forecast indicator showing upcoming waves

**Gameplay:**
- Balance left/right to maintain stability
- Pump for speed in the wave pocket
- Jump and perform aerial tricks
- Chain tricks for combo multipliers
- Ride the barrel for massive points
- Wipeout if balance exceeds limits

**Controls:**
- Arrow keys or WASD for movement
- Space to jump
- Q/E/R for ground tricks
- Mobile: Tilt controls + touch buttons

**Visual Design:**
- Beautiful ocean gradient backgrounds (sunset to deep blue)
- White foam on breaking waves
- Side-view perspective
- Smooth wave animations
- Score and trick displays
- Real-time speed and wave info

**Sound:**
- Wave ambience
- Trick completion sounds
- Splash effects
- Volume-balanced audio system

The game file is saved at: `public/surf-rider.html`