Upgrade HTML LOTO Simulator Visuals & Interactivity

We have an existing HTML-based Lockout/Tagout (LOTO) practical assessment simulator (single HTML file with Tailwind + vanilla JS). We want to significantly increase its visual realism, interactivity, and professional feel while maintaining SCORM compatibility and embeddability.
Current State
• Single-file HTML/CSS/JS with Tailwind
• Interactive elements: breaker toggle, Live-Dead-Live testing, lock/tag selection, checklist progress
• Currently 2D/flat design with basic interactions
Goal
Transform it into a much more realistic and immersive training tool that feels closer to real-world equipment interaction, while keeping it lightweight and browser-based.
Target Realism Level
• Photorealistic or semi-photorealistic visuals (inspired by high-end competitors like Heartwood 3D)
• Smooth, natural animations and feedback
• Physical-like interactions (dragging, rotating, snapping)
• Professional safety training aesthetic (clean, serious, high-contrast)
Scope of Upgrade (Priority Order)
Phase 1 – Visual & Animation Upgrade (Must Have)
• Replace flat graphics with higher-quality 2D illustrations or simple 3D models
• Add realistic lighting, shadows, and textures on panel/breaker/terminals
• Smooth animations using GSAP or similar (breaker handle rotation, lock snapping, multimeter leads connecting, etc.)
• Enhanced visual feedback (glows, particle effects, realistic states for live/dead)
• Sound design (subtle mechanical clicks, beeps, alerts)
Phase 2 – 3D Interaction Upgrade (Strongly Recommended)
• Migrate key components to Three.js (or Babylon.js)
• Create interactive 3D electrical panel with proper depth and lighting
• Realistic manipulation (rotate breaker handle with inertia, drag locks into position)
• Camera controls (orbit/zoom focused on the panel)
• Maintain performance for mobile/desktop
Phase 3 – Advanced Features (Nice to Have)
• Multiple camera angles or guided walkthrough mode
• Improved error states with educational overlays
• Better progress visualization and debrief screen
• Preparation for future custom equipment models
Technical Requirements
• Must remain a self-contained or easily embeddable solution
• Support SCORM / xAPI tracking (existing logic should be preserved or improved)
• Responsive design (works well on tablets and desktops)
• Good performance (target < 2-second load, smooth 60fps)
• Cross-browser compatibility
• Accessibility considerations (high contrast, keyboard navigation where possible)
Deliverables
• Updated single-file or modular HTML/JS codebase
• Clean, well-documented code
• Version with Three.js integration (if chosen)
• Basic documentation for future updates