add login/sign-up page with dark/light mode

node_modules/next/dist/lib/static-env.d.ts

@@ -0,0 +1,13 @@
+import type { NextConfigComplete, NextConfigRuntime } from '../server/config-shared';
+/**
+ * Collects all environment variables that are using the `NEXT_PUBLIC_` prefix.
+ */
+export declare function getNextPublicEnvironmentVariables(): {
+    [k: string]: string | undefined;
+};
+/**
+ * Collects the `env` config value from the Next.js config.
+ */
+export declare function getNextConfigEnv(config: NextConfigComplete | NextConfigRuntime): Record<string, string | undefined>;
+export declare function getStaticEnv(config: NextConfigComplete | NextConfigRuntime, deploymentId: string): Record<string, string | undefined>;
+export declare function populateStaticEnv(config: NextConfigComplete | NextConfigRuntime, deploymentId: string): void;