crystal-app System Requirements Document

1. Introduction

The crystal-app is a web-based application designed for a pet sitting hotel specializing in cats. The primary focus of this project is to develop a simple booking engine, with additional features such as a gallery, testimonials, social network links, and a potential webshop to be considered in future phases.

2. System Overview

The crystal-app will serve as an online platform for a pet sitting hotel, allowing users to book services for their cats. The initial phase will focus on implementing a booking engine, which is crucial for the business operations. The application will be developed as a static site using HTML, CSS, and JavaScript, with PHP handling mailing functionalities. The system will be hosted on a LEMP stack running on Ubuntu 24.0.4.

3. Functional Requirements

• As a User, I should be able to book a pet sitting service for my cat through the booking engine.
• As a User, I should be able to receive a confirmation email with booking details.
• As a User, I should be able to view a gallery of the pet sitting hotel (to be implemented in the second phase).
• As a User, I should be able to read testimonials from other customers (to be implemented in the second phase).
• As a User, I should be able to access links to social networks (to be implemented in the second phase).
• As a User, I should be able to access a webshop for pet-related products (to be implemented in the second phase, decision pending on internal or external integration).

4. User Personas

• Pet Owner: Individuals looking to book pet sitting services for their cats. They need a straightforward booking process and reliable service confirmation.

5. Core User Flows

• Pet Owner visits the website -> navigates to the booking page -> fills out booking form -> submits booking -> receives confirmation email.

6. Visuals Colors and Theme

• primary: #4A90E2 (a calming blue to reflect trust and professionalism)
• primary_light: #B3D4FC (a lighter blue for hover states and secondary UI elements)
• secondary: #F5A623 (a warm orange for headlines and emphasis)
• accent: #50E3C2 (a vibrant teal for call-to-action buttons and active states)
• highlight: #F8E71C (a bright yellow for hover states and notifications)
• bg: #FFFFFF (a clean white background for pages)
• surface: rgba(255, 255, 255, 0.8) (a semi-transparent white for cards and panels)
• text: #333333 (a dark grey for primary text and headings)
• text_muted: #888888 (a softer grey for secondary text and labels)
• border: rgba(0, 0, 0, 0.1) (a subtle grey for borders)

7. Signature Design Concept

The homepage of the crystal-app will feature an interactive "Cat's Journey" animation. As users scroll down, they will follow a playful cat navigating through different sections of the hotel. Each section will represent a different service or feature, such as booking, testimonials, and the gallery. The cat will interact with elements on the page, such as pawing at testimonials or peeking into the gallery. This concept will be brought to life using framer-motion for smooth animations and gsap for scroll-triggered sequences, creating an engaging and memorable user experience.

8. Interaction Model & Motion Direction

The landing page will utilize a "parallax" interaction model, providing a layered depth experience as users scroll. Decorative elements, such as playful cat illustrations and atmospheric backgrounds, will move at different speeds to create a dynamic and engaging storytelling experience. Internal pages, such as the booking form, will adopt a "static" interaction model to ensure clarity and ease of use.

9. Non-Functional Requirements

• The system must be highly responsive and accessible across various devices and screen sizes.
• The booking engine must handle concurrent bookings efficiently without performance degradation.
• Emails sent from the system must comply with GDPR regulations and ensure user data privacy.

10. Tech Stack

• Frontend: HTML, CSS, JavaScript
• Backend: PHP for mailing
• Database: NoSQL (specific database not specified)
• Server: LEMP stack on Ubuntu 24.0.4

11. Assumptions and Constraints

• The initial phase will focus solely on the booking engine, with other features to be implemented in subsequent phases.
• The decision on whether the webshop will be internal or external is pending.
• The system will be hosted on a LEMP stack, which is already set up by the user.

12. Glossary

• LEMP Stack: A software stack consisting of Linux, Nginx, MySQL/MariaDB, and PHP.
• GDPR: General Data Protection Regulation, a legal framework for data protection and privacy in the European Union.
• NoSQL: A type of database that provides a mechanism for storage and retrieval of data modeled in means other than tabular relations used in relational databases.