# Open Source Credits

This project relies on the following open-source libraries and assets.

## Core Libraries

| Library | Author | License | URL |
|---------|--------|---------|-----|
| **Three.js** | mrdoob & contributors | MIT | https://github.com/mrdoob/three.js/ |
| **i18next** | i18next contributors | MIT | https://github.com/i18next/i18next |

## Three.js Ecosystem Modules

All from the Three.js repository ([MIT License](https://github.com/mrdoob/three.js/blob/dev/LICENSE)):

| Module | Purpose |
|--------|---------|
| `GLTFLoader` | GLTF/GLB 3D model loading |
| `RGBELoader` | HDR environment map loading |
| `OrbitControls` | Camera orbit, zoom, and pan controls |
| `DragControls` | Interactive object dragging in 3D space |
| `TransformControls` | Object manipulation gizmos (translate, rotate, scale) |
| `CSS2DRenderer` | Rendering 2D HTML labels positioned in 3D space |
| `CSS3DRenderer` | Rendering CSS-styled elements in 3D space |
| `CurveModifier` | Deforming geometry along curves |
| `Reflector` | Reflective planar surfaces |

## UI Libraries

| Library | Author | License | URL |
|---------|--------|---------|-----|
| **lil-gui** | georgealways | MIT | https://github.com/georgealways/lil-gui |
| **stats.js** | mrdoob | MIT | https://github.com/mrdoob/stats.js/ |
| **tween.js** | tweenjs contributors | MIT | https://github.com/tweenjs/tween.js |

## Typography (YooStudio V2 Design System)

| Font | Foundry | License | URL |
|------|---------|---------|-----|
| **Satoshi** | Indian Type Foundry | Fontshare License (free for personal & commercial use) | https://www.fontshare.com/fonts/satoshi |
| **Cabinet Grotesk** | Indian Type Foundry | Fontshare License (free for personal & commercial use) | https://www.fontshare.com/fonts/cabinet-grotesk |
| **JetBrains Mono** | JetBrains | SIL Open Font License 1.1 | https://www.jetbrains.com/lp/mono/ |

## Design System Reference

The visual redesign follows the **YooStudio V2 — International Edition** design system ("Obsidian Prism" theme). This design system specification was provided as a reference guide and is used under fair use for educational platform development.

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© 2020–2026 E.P. Sajitha (Ph.D.) — Effectual Learning. All rights reserved.
Email: effectuallearning@gmail.com