ruby-start

Introduction

The project "ruby-start" aims to develop a basic single-page calculator design. This document outlines the system requirements for the project, ensuring that all necessary functionalities and design elements are captured to meet the user's needs.

System Overview

The ruby-start project will deliver a simple, user-friendly calculator interface that performs basic arithmetic operations. The design will focus on ease of use and accessibility, ensuring that users can perform calculations efficiently.

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 or result to start a new calculation.
• As a User, I should be able to view the current input and result on the display screen.
• As a User, I should be able to use the calculator on both desktop and mobile devices.

User Personas

• General User: An individual looking to perform basic arithmetic calculations quickly and efficiently using a simple interface.

Core User Flows

1. User opens the calculator page.
2. User inputs numbers and selects an arithmetic operation.
3. User views the result on the display screen.
4. User clears the input to perform another calculation.

Visuals Colors and Theme

• primary: #3498db (a calming blue for the main interface)
• primary_light: #85c1e9 (a lighter blue for hover states)
• secondary: #e74c3c (a contrasting red for buttons and highlights)
• accent: #f1c40f (a vibrant yellow for active states and CTAs)
• highlight: #f39c12 (an orange for notifications and active indicators)
• bg: #ecf0f1 (a light grey for the background)
• surface: rgba(255, 255, 255, 0.9) (a white for card/panel backgrounds)
• text: #2c3e50 (a dark blue for primary text)
• text_muted: #95a5a6 (a muted grey for secondary text)
• border: rgba(44, 62, 80, 0.2) (a subtle border color)

Signature Design Concept

The homepage of the ruby-start calculator will feature an interactive "flip" animation for the calculator keys. When a user clicks a key, it will flip like a card, providing a tactile feedback effect. This design will make the calculator engaging and visually appealing. The keys will have a slight 3D effect, using shadows and highlights to enhance the flipping animation. The animation will be implemented using motion/react for smooth transitions.

Landing Hero Motion Brief

The landing page will feature a continuous loop animation where numbers and symbols float into the calculator display, demonstrating a calculation process. The animation will show numbers entering the display, the calculator performing an operation, and the result appearing. This loop will last 10 seconds and will be implemented using CSS and motion/react for seamless integration. The animation will pause when the user interacts with the calculator, ensuring focus on the task.

Interaction Model & Motion Direction

• Interaction Model: Animated
• The landing page will feature moderate scroll-triggered reveals and hover transitions, providing a polished user experience. The calculator keys will have spring physics for interactive elements, enhancing the tactile feel of the interface.

Non-Functional Requirements

• The calculator must load quickly and perform operations without noticeable delay.
• The design should be responsive and accessible on various devices and screen sizes.
• The interface should be intuitive, requiring minimal instructions for use.

Tech Stack

• Frontend: React for Web
• Backend: None required as this is a single-page application
• Database: None required

Assumptions and Constraints

• The calculator will only perform basic arithmetic operations.
• The application will be a single-page design with no backend integration.
• The design will prioritize simplicity and ease of use.

Glossary

• Arithmetic Operations: Basic mathematical operations including addition, subtraction, multiplication, and division.
• Responsive Design: An approach to web design that makes web pages render well on a variety of devices and window or screen sizes.

This document outlines the requirements and design considerations for the ruby-start project, ensuring a clear and concise development process for the single-page calculator.