I would like to build a professional, single-page website that can detect plagiarism from three entry points: direct text input, uploaded files, and pasted URLs. After a scan, the site should present a clear similarity score and allow users to download a concise PDF report of the findings. Alongside the user interface, I need an internal RESTful API so our future mobile app and partner platforms can submit content for checking and retrieve results in JSON. Because my audience spans several regions, the interface must support at least English, Spanish, and French at launch, with an easy path for adding more languages later. Please handle the full web stack—from a clean, responsive front end (React, Vue, or similar) through the plagiarism-detection logic and database layer—while keeping everything on a single, fast-loading page. Robust input validation, secure file handling, and efficient comparison algorithms are essential. Deliverables: • Single-page site with professional UI • Text, file, and URL scanning modules • PDF report generator • Documented REST API endpoints • Multi-language front-end framework in place • Setup instructions and brief hand-over walkthrough If you’ve built similar tools or have expertise with existing plagiarism-detection APIs or libraries, let me know—speed and accuracy are important.