Product Specification: PascalCase to camelCase Bulk Converter

Overview

A high-performance, single-file browser utility designed for developers to refactor variable names, class names, or data structures from PascalCase to camelCase. This tool emphasizes privacy, speed, and clean output.

Core Features

• Bulk Mode: An input area accepting multiline strings where each line is processed independently.
• Live Conversion: Instant transformation as the user types or pastes text.
• One-Click Copy: A prominent action button to copy the entire output to the clipboard.
• Error Handling: A status bar that validates input (e.g., notifying if a line does not appear to be PascalCase).
• Zero-Storage Architecture: No reliance on cookies, local storage, or server-side databases. The tool operates purely in-memory.

UI Design & Aesthetics

• Design Language: Modern, clean, professional SaaS aesthetic. Use of generous whitespace, rounded corners (8px), and subtle border shadows (shadow-sm, shadow-md).
• Color Palette:
  • Primary: Deep Blue (#2563EB) for action buttons.
  • Background: Off-white (#F8FAFC) for the page, White (#FFFFFF) for input cards.
  • Text: Slate 800 (#1E293B) for readability.
  • Borders: Slate 200 (#E2E8F0).
• Layout:
  • Header: Simple, clean title with a short description.
  • Main Tool Area: A vertical stack layout. Top panel is the "Input" textarea; bottom panel is the "Result" read-only area.
  • Controls: A centered action bar featuring "Convert," "Copy," and "Clear" buttons.

Technical Implementation Constraints

• Single File: All HTML, CSS, and Vanilla JavaScript must be contained in a single index.html file.
• Frameworks: No React, Vue, or Angular. Use standard Web APIs.
• Responsive: The UI must switch to a stacked column layout on mobile devices and a side-by-side layout on desktops.
• Sandboxed Compatibility:
  • NO LocalStorage, SessionStorage, or IndexedDB.
  • NO external tracking pixels or analytic scripts.
  • NO alerts/prompts (use custom overlay modals).
  • All third-party assets (e.g., Tailwind CSS via CDN) must be loaded securely via HTTPS.

Interaction & Animation

• Micro-interactions: Buttons should have a slight scale-down effect on click (transform: scale(0.98)) and a hover transition (transition-all duration-200).
• Copy Feedback: When clicking "Copy," the button label should temporarily change to "Copied!" with a green checkmark icon, reverting after 2 seconds.
• Responsiveness: Use CSS Flexbox/Grid to handle window resizing gracefully without horizontal scrollbars.