Build premium data portal with React + Tailwind CSS

Frontend Features:
- Landing page with glassmorphism, animated counters, hero section
- Interactive data tables with search, sort, filter, CSV export
- Premium dark theme (navy + gold accents)
- Framer Motion animations and micro-interactions
- Responsive design with Inter + Playfair Display typography
- DataTable component with pagination and live search

Backend Updates:
- New API endpoints: /api/rates/per-diem, /api/rates/accommodations, /api/stats
- Database service methods for bulk data retrieval
- Production mode serves built React app from /dist/client
- Fallback to legacy HTML for development

Tech Stack:
- React 18 + TypeScript
- Vite 7 build tool
- Tailwind CSS 4 with @tailwindcss/postcss
- Framer Motion for animations
- Lucide React icons
- SQLite3 backend

Build Output:
- 351KB optimized JavaScript bundle
- 29KB CSS bundle
- Fully tree-shaken and minified

tailwind.config.js

@@ -0,0 +1,81 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  darkMode: ["class"],
+  content: ["./client/index.html", "./client/src/**/*.{js,ts,jsx,tsx}"],
+  theme: {
+    extend: {
+      colors: {
+        border: "hsl(var(--border))",
+        input: "hsl(var(--input))",
+        ring: "hsl(var(--ring))",
+        background: "hsl(var(--background))",
+        foreground: "hsl(var(--foreground))",
+        primary: {
+          DEFAULT: "hsl(var(--primary))",
+          foreground: "hsl(var(--primary-foreground))",
+        },
+        secondary: {
+          DEFAULT: "hsl(var(--secondary))",
+          foreground: "hsl(var(--secondary-foreground))",
+        },
+        destructive: {
+          DEFAULT: "hsl(var(--destructive))",
+          foreground: "hsl(var(--destructive-foreground))",
+        },
+        muted: {
+          DEFAULT: "hsl(var(--muted))",
+          foreground: "hsl(var(--muted-foreground))",
+        },
+        accent: {
+          DEFAULT: "hsl(var(--accent))",
+          foreground: "hsl(var(--accent-foreground))",
+        },
+        popover: {
+          DEFAULT: "hsl(var(--popover))",
+          foreground: "hsl(var(--popover-foreground))",
+        },
+        card: {
+          DEFAULT: "hsl(var(--card))",
+          foreground: "hsl(var(--card-foreground))",
+        },
+      },
+      borderRadius: {
+        lg: "var(--radius)",
+        md: "calc(var(--radius) - 2px)",
+        sm: "calc(var(--radius) - 4px)",
+      },
+      fontFamily: {
+        sans: ["Inter", "sans-serif"],
+        display: ["Playfair Display", "serif"],
+      },
+      keyframes: {
+        "fade-in": {
+          "0%": { opacity: "0", transform: "translateY(10px)" },
+          "100%": { opacity: "1", transform: "translateY(0)" },
+        },
+        "slide-in": {
+          "0%": { transform: "translateX(-100%)" },
+          "100%": { transform: "translateX(0)" },
+        },
+        glow: {
+          "0%, 100%": { boxShadow: "0 0 20px rgba(212, 175, 55, 0.3)" },
+          "50%": { boxShadow: "0 0 30px rgba(212, 175, 55, 0.6)" },
+        },
+      },
+      animation: {
+        "fade-in": "fade-in 0.5s ease-out",
+        "slide-in": "slide-in 0.3s ease-out",
+        glow: "glow 2s ease-in-out infinite",
+      },
+      backgroundImage: {
+        "gradient-radial": "radial-gradient(var(--tw-gradient-stops))",
+        glass:
+          "linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05))",
+      },
+      backdrop: {
+        "blur-glass": "blur(10px)",
+      },
+    },
+  },
+  plugins: [],
+};