This is a comprehensive project! Let me start by understanding the codebase and generating design inspiration, then build this step by step.

Now let me set up the task list for this comprehensive project:

Let me start building! First, I'll update the theme, globals, layout, and create the core components:

Good, we have a comprehensive set of UI components. Now let me update the theme and start building the app. I'll update the globals.css with the construction theme colors, update the layout, and create all the core components:

Now let me update the layout with proper fonts and metadata:

Now let me create the estimation engine logic, and all the components. I'll create them in parallel:

Now let me create the Dashboard, New Estimate form, and other section components:

Now let me create the Detailed Report with charts and PDF, plus the Smart Suggestions and remaining sections:

Now let me create the Future Scope, About sections, and the main page:

Now let me create the main page that ties everything together, and add jsPDF to the package.json:

Now let me add jsPDF to the package.json:

Your SmartBuild Estimator is now complete. Here's what was built:

1. Theme & Layout - Professional construction UI with Dark Blue (#0f172a), Steel Grey, White, and Accent Orange (#f97316) color scheme. Fixed collapsible sidebar navigation, sticky top navbar, animated preloader, and responsive design.
2. Estimation Engine (lib/estimation-engine.ts) - A comprehensive rule-based system with detailed Indian construction rates that calculates structural costs (foundation, columns, slabs, brickwork, plaster, flooring, roofing), material quantities (cement, steel, sand, aggregate, bricks, tiles, paint, plumbing, electrical), labour costs (mason, helper, carpenter, electrician, plumber, painter), and extras (architect 5%, documentation, transport, contingency 10%, waste 5%). Every formula is thoroughly commented for educational clarity.
3. Dashboard - Welcome banner with quick stats, feature cards, and a "How It Works" guide. Updates dynamically after an estimation is run.
4. New Estimate Form - Input form with built-up area, floors, construction type, location type, and material quality selectors. Shows a live summary with category breakdowns after calculation.
5. Detailed Report - Pie chart for cost distribution, horizontal bar chart for material breakdown (using Recharts), and four detailed tables. Includes a PDF download button using jsPDF that generates a professional multi-page report.
6. Smart Suggestions - 10+ rule-based suggestions (structural consultant for large areas, higher grade concrete for multi-storey, solar panels for premium, cost optimization for metro, durability warnings for economy materials, etc.) displayed in color-coded cards.
7. Future Scope & About - Professional content sections covering AI plan recognition, ML cost prediction, real-time APIs, 3D models, government rate integration, project objectives, methodology, and technology stack.

Let me first read the original requirements and understand the current codebase, then plan the pure HTML/CSS/JS Netlify structure.

Now let me look at the current project structure to understand what exists:

Now let me read the estimation engine and key component files that were previously built, so I can port the logic to vanilla JS:

The previous files were removed. This is a fresh start. Let me now write the plan for a pure HTML/CSS/JS Netlify-based project.