diff --git a/package-lock.json b/package-lock.json
index 031d628..13d1578 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
         "lucide-react": "^1.8.0",
         "next": "16.2.4",
         "next-auth": "^5.0.0-beta.31",
+        "next-themes": "^0.4.6",
         "papaparse": "^5.5.3",
         "pg": "^8.20.0",
         "react": "19.2.4",
@@ -8831,6 +8832,16 @@
         }
       }
     },
+    "node_modules/next-themes": {
+      "version": "0.4.6",
+      "resolved": "https://registry.npmjs.org/next-themes/-/next-themes-0.4.6.tgz",
+      "integrity": "sha512-pZvgD5L0IEvX5/9GWyHMf3m8BKiVQwsCMHfoFosXtXBMnaS0ZnIJ9ST4b4NqLVKDEm8QBxoNNGNaBv2JNF6XNA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc"
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.31",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",