mannaxsara/detective-ai ? reverse-engineered prompt

Build me an app called DetectiveAI that feels like a smart data analyst for regular people. I want users to sign in, upload a CSV, Excel, JSON, or Parquet file, and then instantly see a clean dashboard with a data summary, missing values, key stats, unusual rows, and simple charts.

It should also let users ask questions about the dataset in plain English, show basic forecasts for time based data, point out anomalies, and explain possible root causes in a simple way. Add a place where users can browse past analyses, open one by a nice case name, and export a polished report as PDF or DOCX.

Make the design feel bold and a little forensic, with strong shadows, dark and light mode, and a bright acid accent. Include a landing page, pricing page, auth pages, and the main dashboard flow. If you need to look up current docs online, go ahead.