lime-start System Requirements Document

Introduction

The lime-start project aims to develop a simple single-page design for a calculator. This document outlines the system requirements necessary to achieve the project's objectives.

System Overview

The lime-start project will deliver a web-based calculator application that is intuitive and easy to use. The application will be designed to perform basic arithmetic operations and will be accessible on various devices.

Functional Requirements as Story Points

• As a User, I should be able to perform basic arithmetic operations such as addition, subtraction, multiplication, and division.
• As a User, I should be able to clear the current input to start a new calculation.
• As a User, I should be able to view the results of my calculations immediately after inputting the operation.

User Personas

• User: An individual who needs to perform basic arithmetic calculations quickly and efficiently.

Core User Flows

1. User opens the calculator application.
2. User inputs numbers and selects an arithmetic operation.
3. User views the result of the calculation.
4. User clears the input to perform a new calculation.

Visuals Colors and Theme

• primary: #4CAF50 (a fresh lime green to align with the project name)
• primary_light: #81C784 (a lighter tint of lime green for hover states)
• secondary: #FFFFFF (white for a clean and simple look)
• accent: #FFEB3B (a bright yellow for emphasis on buttons and active states)
• highlight: #FFC107 (a warm amber for notifications and active indicators)
• bg: #F5F5F5 (a light grey for the page background)
• surface: #FFFFFF (white for card/panel backgrounds)
• text: #212121 (a dark grey for primary text)
• text_muted: #757575 (a softer grey for secondary text)
• border: #E0E0E0 (a subtle grey for accessible borders)

Signature Design Concept

The lime-start calculator will feature an interactive design concept called "Dynamic Button Ripple." When a user clicks a button, a ripple effect will emanate from the point of contact, providing immediate visual feedback. This effect will be achieved using motion/react for smooth animations. The ripple will be a subtle expansion of the button's accent color, creating a visually engaging experience. The calculator's layout will be minimalistic, with a focus on large, easy-to-press buttons and a clear display area.

Landing Hero Motion Brief

The landing page will feature a continuous animation loop where numbers and symbols dynamically arrange themselves into a calculator layout. As the user interacts, the numbers will animate into place, demonstrating the calculator's functionality. This will be achieved using motion/react to ensure smooth transitions and interactions. The animation will be responsive, adjusting to different screen sizes while maintaining clarity and usability.

Interaction Model & Motion Direction

• Interaction Model: Animated
• The calculator will feature moderate hover transitions and spring physics on interactive elements to enhance user experience.
• The landing page will include a continuous 2D motion loop to illustrate the calculator's functionality.

Non-Functional Requirements

• The application must load quickly and perform calculations without noticeable delay.
• The design must be responsive and accessible on various devices, including desktops, tablets, and smartphones.

Tech Stack

• Frontend: React for Web
• Backend: Not applicable for a single-page application
• Database: Not applicable for a single-page application

Assumptions and Constraints

• The calculator will only perform basic arithmetic operations.
• The application will be a single-page design without the need for backend integration.

Glossary

• Single-page application: A web application that interacts with the user by dynamically rewriting the current page, rather than loading entire new pages from the server.
• Arithmetic operations: Basic mathematical operations including addition, subtraction, multiplication, and division.