Creative Services Webapp Build -- 2

I’m looking for a developer who can wrap my entire creative workflow into a single-file web application. The app must spotlight YouTube Thumbnails as the hero service and generate bold, colorful mock-ups that rely on high-contrast imagery by default.

Core modules to include
• Service Showcase & Portfolio Gallery – card-based live previews for logo editing, thumbnail work, and business cards.
• YouTube Thumbnail CTR & Concept Generator – auto-suggest catchy titles, visual hooks, and facial-expression prompts while keeping the styling bold and colorful. Logic should be extendable later for minimalist or text-heavy variants.
• Interactive Pricing & Proposal Calculator – dynamic totals for logos, thumbnails, and business cards.
• Client Brief & AI Prompt Builder – outputs clear Hinglish/English instructions ready for Midjourney, DALL-E, or Photoshop AI.
• Order Form with one-click WhatsApp send and a copy-to-clipboard proposal exporter.

Technical notes
– End product must be a single distributable HTML file with embedded CSS/JS (no external dependencies after build).
– Feel free to use vanilla JS, React, Svelte, or similar; just document the build steps.
– Lightweight, responsive, and fast-loading across devices.
– Clean, well-commented code so I can tweak text and colors later.

Deliverables
1. Fully functional single-file web application.
2. Source files or repo.
3. Brief setup/readme.

If you’ve built compact, interactive portfolios or pricing calculators before, I’d love to see them. Let’s streamline my creative services workflow into one slick file.