Initial commit: Plataforma de Economía

Features:
- React 18 + TypeScript frontend with Vite
- Go + Gin backend API
- PostgreSQL database
- JWT authentication with refresh tokens
- User management (admin panel)
- Docker containerization
- Progress tracking system
- 4 economic modules structure

Fixed:
- Login with username or email
- User creation without required email
- Database nullable timestamps
- API response field naming

frontend/tailwind.config.js

@@ -0,0 +1,23 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./index.html",
+    "./src/**/*.{js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        primary: '#2563eb',
+        secondary: '#7c3aed',
+        success: '#10b981',
+        warning: '#f59e0b',
+        error: '#ef4444',
+      },
+      fontFamily: {
+        sans: ['Inter', 'system-ui', 'sans-serif'],
+        mono: ['JetBrains Mono', 'monospace'],
+      },
+    },
+  },
+  plugins: [],
+}