refactor: update class names for consistency and improve styling

- Changed `flex-shrink-0` to `shrink-0` in multiple components for better consistency.
- Updated button and checkbox classes to use `rounded-sm` for a more uniform appearance.
- Adjusted backdrop blur classes for modals to `backdrop-blur-xs` for a subtler effect.
- Removed unused Tailwind CSS configuration file.

package.json

@@ -20,33 +20,33 @@
     "cors": "^2.8.5",
     "dotenv": "^17.3.1",
     "exceljs": "^4.4.0",
-    "express": "^4.21.0",
-    "express-rate-limit": "^7.5.1",
+    "express": "^5.2.1",
+    "express-rate-limit": "^8.5.2",
     "flatpickr": "^4.6.13",
     "ioredis": "^5.10.0",
     "jsonwebtoken": "^9.0.0",
-    "lucide-react": "^0.460.0",
+    "lucide-react": "^1.16.0",
     "multer": "^2.1.0",
     "nodemailer": "^8.0.1",
     "otpauth": "^9.5.0",
-    "pdfkit": "^0.17.2",
+    "pdfkit": "^0.18.0",
     "pg": "^8.18.0",
     "qrcode": "^1.5.4",
-    "rate-limit-redis": "^4.3.1",
-    "react": "^18.3.0",
-    "react-dom": "^18.3.0",
+    "rate-limit-redis": "^5.0.0",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6",
     "react-hot-toast": "^2.4.0",
-    "react-router-dom": "^6.28.0",
-    "uuid": "^13.0.0",
+    "react-router-dom": "^7.15.1",
+    "uuid": "^14.0.0",
     "xml2js": "^0.6.0"
   },
   "devDependencies": {
-    "@types/react": "^18.3.0",
-    "@types/react-dom": "^18.3.0",
+    "@tailwindcss/postcss": "^4.3.0",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.1",
-    "autoprefixer": "^10.4.0",
     "postcss": "^8.4.0",
-    "tailwindcss": "^3.4.0",
+    "tailwindcss": "^4.3.0",
     "vite": "^8.0.0"
   }
 }