System Requirements Document for jade-simple

1. Introduction

The project "jade-simple" aims to deliver a simple, single-page calculator application. The primary audience is any user who requires a straightforward tool to perform basic arithmetic calculations. The design emphasizes functional clarity and ease of use, adhering to the principles of simplicity and minimalism.

2. System Overview

The jade-simple project will deliver a single-page calculator application that allows users to perform basic arithmetic operations. The application will be accessible anonymously, ensuring ease of use without the need for user accounts or authentication. The design will follow a strict grid layout with a focus on functional clarity, inspired by Dieter Rams' design principles.

2a. Product Interpretation and Delivery Boundary

The jade-simple calculator is a single-page application that does not require user authentication, allowing anonymous access. The application will be delivered as a web-based tool, focusing on simplicity and usability. The design constraints limit the application to a single page, ensuring all interactions occur within this interface. Future expansions or additional features are not within the current scope.

2b. Source Content Inventory

Not applicable as there is no explicit content_source directive.

2c. Page Content and Component Coverage

Calculator

• Display Area

  • Shows the current input and results of calculations.
  • Supports clear visibility of numbers and operations.

• Numeric Keypad

  • Buttons for digits 0-9.
  • Allows input of numbers for calculations.

• Operation Buttons

  • Basic arithmetic operations: addition (+), subtraction (-), multiplication (*), and division (/).
  • Provides functionality to perform calculations.

• Control Buttons

  • Clear (C) button to reset the current calculation.
  • Equals (=) button to evaluate the entered expression.

• Design Elements

  • Rounded-rectangle buttons with a warm orange accent for interaction.
  • Strict modular grid layout for buttons and display.
  • Typography: DM Sans, medium weight for clarity.

3. Functional Requirements

• As a Calculator User, I should be able to access the calculator page anonymously to perform calculations. (required_inference)
• As a Calculator User, I should be able to enter numbers and basic arithmetic operations to form a calculation. (required_inference)
• As a Calculator User, I should be able to view the result of my calculation on the same page. (required_inference)
• As a Calculator User, I should be able to clear or reset the current calculation to start a new one. (required_inference)

4. User Personas

Calculator User

• Product Context: Uses the jade-simple calculator to perform basic arithmetic calculations.
• Primary Goal: To quickly and easily calculate arithmetic expressions without any distractions or unnecessary features.
• Distinct Responsibilities: Enter numbers and operations, evaluate calculations, view results, and reset calculations as needed.
• Interactions: Engages with the calculator interface to input data and receive immediate feedback.
• Observable Success: Successfully completes calculations and views results on the single-page interface.

5. Core User Flows

1. Accessing the Calculator

   • The Calculator User opens the jade-simple application.
   • The user is presented with the calculator interface immediately.

2. Performing a Calculation

   • The user enters numbers and selects arithmetic operations using the keypad.
   • The user presses the equals (=) button to evaluate the expression.
   • The result is displayed in the display area.

3. Resetting the Calculator

   • The user presses the clear (C) button.
   • The current calculation is reset, and the display area is cleared for a new calculation.

6. Visuals Colors and Theme

• Muse: Dieter Rams
• Palette:
  • Background: #F7F7F7
  • Surface: #FFFFFF
  • Text: #333333
  • Primary/Accent: #FF9900
  • Muted: #CCCCCC
• Typography:
  • Headings: DM Sans, Medium weight
  • Body: DM Sans
  • Scale: 1.25 modular (32/24/20/16/14)
• Shape Language: Rounded-rectangle controls
• Layout: Strict modular grid
• Imagery: Diagrammatic simplicity

7. Signature Design Concept

The jade-simple calculator interface is centered on a light background, featuring a clean, grid-aligned layout. The interface is dominated by rounded-rectangle buttons with warm orange accents, ensuring intuitive interaction. The display area is clear and uses medium-weight typography for readability.

8. Interaction Model & Motion Direction

• Interaction Model: Static
• Motion Tempo: Still
• Hero Dimensionality: Flat
• Landing Hero Motion Brief: The calculator interface is static with instant, mechanical feedback on button presses. The focus is on clarity and functionality without any unnecessary animations.

9. Non-Functional Requirements

• The application must load quickly and provide instant feedback to user interactions.
• The design must adhere to accessibility standards, ensuring readability and ease of use for all users.

10. Tech Stack

• Frontend: React
• Styling: CSS with strict grid layout
• Deployment: Docker for containerization

11. Assumptions and Constraints

• The application will remain a single-page tool without additional features or pages.
• Users will access the application anonymously without any authentication requirements.

12. Glossary

• Calculator User: The individual using the jade-simple application to perform arithmetic calculations.
• Arithmetic Operations: Basic mathematical operations including addition, subtraction, multiplication, and division.