System Requirements Document (SRD)

1. Introduction

This document outlines the requirements for a 3D-enhanced To-Do List application. The application will combine functionality with a minimalist and playful design, incorporating subtle 3D elements to create an engaging user experience. The goal is to provide users with an intuitive and visually appealing tool for managing their tasks.

2. System Overview

The To-Do List application will allow users to create, manage, and organize their tasks efficiently. The application will feature a minimalist and playful design, enhanced with soft, light colors and subtle 3D elements. The 3D components will be interactive, responding to user actions such as hovering or clicking, to create a dynamic and engaging experience.

The application will be accessible via web and mobile platforms, ensuring a seamless experience across devices.

3. Functional Requirements as Story Points

• As a User, I should be able to create a new task.
• As a User, I should be able to edit an existing task.
• As a User, I should be able to delete a task.
• As a User, I should be able to mark a task as completed.
• As a User, I should be able to view my tasks in a list format.
• As a User, I should be able to organize tasks into categories.
• As a User, I should be able to set due dates for tasks.
• As a User, I should be able to prioritize tasks.
• As a User, I should be able to interact with 3D elements in the interface, such as buttons or task cards, which respond to hovering or clicking.
• As a User, I should be able to toggle between light and dark modes.

4. User Personas

1. User: The primary user of the application who creates and manages tasks. They value simplicity, efficiency, and a visually appealing interface.

5. Visuals Colors and Theme

The application will feature a minimalist and playful design with a soft and light color palette. The proposed color scheme includes:

• Background: Soft pastel shades such as light peach (#FFE5D9) or pale lavender (#EDE7F6).
• Primary Buttons: Muted teal (#A7D8DE) or soft mint (#C8E6C9).
• Secondary Buttons: Light coral (#FFABAB) or pale yellow (#FFF9C4).
• Text: Dark gray (#4A4A4A) for readability.
• Accents: Subtle gradients or shadows in complementary pastel tones.

The design will incorporate subtle 3D animations and transitions, such as buttons that "pop" slightly when clicked or task cards that tilt on hover.

6. Signature Design Concept

The home page/landing page will feature a 3D interactive task board. Users will be greeted with a floating, interactive 3D grid of task cards. Each card will represent a task and will be slightly elevated from the background, casting soft shadows for a realistic effect.

Key Features:

• Hover Interaction: When users hover over a task card, it will gently tilt and glow with a soft pastel highlight.
• Click Interaction: Clicking on a card will cause it to "flip" in 3D, revealing task details on the back.
• Dynamic Animations: Completed tasks will "float up" and fade out in a satisfying animation, while new tasks will "drop in" from above.
• Background: A subtle, animated gradient background that shifts between soft pastel hues (e.g., peach to lavender) to create a calming effect.
• Micro-Interactions: Buttons will have a slight "bounce" effect when clicked, and category tabs will slide smoothly into view when selected.

This design concept ensures that the application is not only functional but also provides a delightful and memorable user experience.

7. Non-Functional Requirements

• The application should load within 2 seconds on standard broadband connections.
• The 3D animations and interactions should be smooth, with a frame rate of at least 60 FPS.
• The application should be responsive and work seamlessly on both web and mobile platforms.
• The application should be accessible, adhering to WCAG 2.1 AA standards.

8. Tech Stack

• Frontend: React for Web, React Native for Mobile App.
• Backend: Python with FastAPI.
• Database: MySQL with Alembic for migrations.
• 3D Graphics: Three.js for 3D elements and animations.
• AI Models: GPT 5.2 for user-friendly responses.
• AI Tools: Langchain for task-related queries and recommendations.
• Local Orchestration: Docker, docker-compose.
• Server-Side Orchestration: Kubernetes.

9. Assumptions and Constraints

• Users will have modern devices capable of rendering 3D graphics.
• The application will primarily target individual users rather than teams or organizations.
• The application will not include advanced collaboration features in the initial release.
• The application will require an internet connection to function.

10. Glossary

• 3D Elements: Interactive graphical components that appear three-dimensional, created using technologies like Three.js.
• Task Card: A visual representation of a task in the application, which can be interacted with.
• Micro-Interactions: Small, subtle animations or visual effects that enhance user experience.
• WCAG 2.1 AA Standards: Web Content Accessibility Guidelines that ensure web content is accessible to individuals with disabilities.

This updated SRD incorporates the user's request for a minimalist and playful design with soft and light colors, while maintaining the original structure and intent of the application.