Initial commit SteelBase - Oficiais e Funcionando

.kiro/steering/tech.md

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+# Technical Stack
+
+## Architecture
+
+Single-page application (SPA) with vanilla JavaScript - no build system or framework dependencies.
+
+## Core Technologies
+
+- **HTML5**: Semantic markup, modern web standards
+- **CSS3**: Custom design system with CSS variables, dark/light theme support
+- **Vanilla JavaScript**: ES6+ features, no frameworks
+- **Chart.js**: Data visualization (loaded via CDN)
+
+## External Dependencies
+
+```html
+<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
+```
+
+## Data Storage
+
+- **In-memory state**: All application state stored in JavaScript objects (`appState`, `adminConfig`)
+- **CSV files**: Material database stored in `/BD/*.csv` directory
+- **No backend**: Pure client-side application, no server required
+- **No localStorage**: Data is not persisted between sessions
+
+## File Structure
+
+```
+/
+├── index.html          # Main HTML structure
+├── app.js              # UI logic, navigation, modals
+├── calculations.js     # Calculation functions
+├── style.css           # Complete styling with design system
+└── BD/                 # Material database (CSV files)
+    ├── perfis_w.csv
+    ├── perfis_i.csv
+    ├── cantoneiras.csv
+    ├── tubos_circulares.csv
+    ├── tubos_rhs.csv
+    ├── chapas.csv
+    ├── barras.csv
+    ├── eletrodos.csv
+    ├── parafusos.csv
+    └── tintas.csv
+```
+
+## Running the Application
+
+**Development**: Open `index.html` directly in a browser or use a local web server:
+
+```bash
+# Python 3
+python -m http.server 8000
+
+# Node.js (http-server)
+npx http-server
+
+# PHP
+php -S localhost:8000
+```
+
+**Production**: Deploy to any static hosting service (GitHub Pages, Netlify, Vercel, etc.)
+
+## Browser Compatibility
+
+Modern browsers with ES6+ support required (Chrome 60+, Firefox 60+, Safari 12+, Edge 79+).
+
+## No Build Process
+
+The application runs directly in the browser without compilation, bundling, or transpilation.