diff --git a/package-lock.json b/package-lock.json
index acf6857..c585cbd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -61,7 +61,6 @@
         "motion": "^11.15.0",
         "next": "^15.1.0",
         "next-auth": "^5.0.0-beta.25",
-        "next-themes": "^0.4.6",
         "nodemailer": "^7.0.7",
         "openai": "^6.16.0",
         "papaparse": "^5.4.1",
@@ -12143,16 +12142,6 @@
         }
       }
     },
-    "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",
diff --git a/package.json b/package.json
index 046c3e1..98d69f7 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,6 @@
     "motion": "^11.15.0",
     "next": "^15.1.0",
     "next-auth": "^5.0.0-beta.25",
-    "next-themes": "^0.4.6",
     "nodemailer": "^7.0.7",
     "openai": "^6.16.0",
     "papaparse": "^5.4.1",
diff --git a/src/app/globals.css b/src/app/globals.css
index 4259730..0166a55 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -218,35 +218,6 @@
     --info: 194 25% 44%;
   }
 
-  .dark {
-    --background: 220 15% 8%;
-    --foreground: 0 0% 98%;
-
-    --card: 220 15% 10%;
-    --card-foreground: 0 0% 98%;
-
-    --popover: 220 15% 10%;
-    --popover-foreground: 0 0% 98%;
-
-    --primary: 354 90% 50%;
-    --primary-foreground: 0 0% 100%;
-
-    --secondary: 220 15% 18%;
-    --secondary-foreground: 0 0% 98%;
-
-    --muted: 220 15% 18%;
-    --muted-foreground: 0 0% 64%;
-
-    --accent: 194 20% 18%;
-    --accent-foreground: 0 0% 98%;
-
-    --destructive: 0 84% 55%;
-    --destructive-foreground: 0 0% 100%;
-
-    --border: 220 15% 22%;
-    --input: 220 15% 22%;
-    --ring: 220 10% 50%;
-  }
 }
 
 @layer base {
@@ -345,13 +316,6 @@ div[class*="recharts-tooltip"] {
   opacity: 1 !important;
 }
 
-.dark div[class*="tremor"][class*="tooltip"],
-.dark .recharts-tooltip-wrapper .recharts-default-tooltip,
-.dark div[class*="recharts-tooltip"] {
-  background-color: hsl(var(--card)) !important;
-  border-color: hsl(var(--border)) !important;
-}
-
 /* Tremor/Recharts tooltip color indicator icons — fix rendering */
 .recharts-tooltip-wrapper svg.recharts-surface {
   display: inline-block !important;
diff --git a/src/app/providers.tsx b/src/app/providers.tsx
index 36461ff..de62bad 100644
--- a/src/app/providers.tsx
+++ b/src/app/providers.tsx
@@ -2,7 +2,6 @@
 
 import { useState } from 'react'
 import { SessionProvider } from 'next-auth/react'
-import { ThemeProvider } from 'next-themes'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
 import { httpBatchLink } from '@trpc/client'
 import superjson from 'superjson'
@@ -78,12 +77,10 @@ export function Providers({ children }: { children: React.ReactNode }) {
   )
 
   return (
-    <ThemeProvider attribute="class" defaultTheme="light" enableSystem={false}>
-      <SessionProvider>
-        <trpc.Provider client={trpcClient} queryClient={queryClient}>
-          <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
-        </trpc.Provider>
-      </SessionProvider>
-    </ThemeProvider>
+    <SessionProvider>
+      <trpc.Provider client={trpcClient} queryClient={queryClient}>
+        <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
+      </trpc.Provider>
+    </SessionProvider>
   )
 }
diff --git a/src/components/layouts/role-nav.tsx b/src/components/layouts/role-nav.tsx
index 3e1c7ff..69165d0 100644
--- a/src/components/layouts/role-nav.tsx
+++ b/src/components/layouts/role-nav.tsx
@@ -19,11 +19,10 @@ import {
 import type { Route } from 'next'
 import type { LucideIcon } from 'lucide-react'
 import {
-  LogOut, Menu, Moon, Settings, Sun, User, X,
+  LogOut, Menu, Settings, User, X,
   ArrowRightLeft,
   ExternalLink as ExternalLinkIcon, HelpCircle, Mail,
 } from 'lucide-react'
-import { useTheme } from 'next-themes'
 import { Logo } from '@/components/shared/logo'
 import { NotificationBell } from '@/components/shared/notification-bell'
 import { useRoleSwitcher, RoleSwitcherPill } from './role-switcher'
@@ -69,9 +68,6 @@ export function RoleNav({ navigation, roleName, user, basePath, statusBadge, edi
   })
   const endImpersonation = trpc.user.endImpersonation.useMutation()
   const logNavClick = trpc.learningResource.logNavClick.useMutation()
-  const { theme, setTheme } = useTheme()
-  const [mounted, setMounted] = useState(false)
-  useEffect(() => setMounted(true), [])
 
   const handleSignOut = async () => {
     if (isImpersonating) {
@@ -172,20 +168,6 @@ export function RoleNav({ navigation, roleName, user, basePath, statusBadge, edi
                 </DropdownMenuContent>
               </DropdownMenu>
             )}
-            {mounted && (
-              <Button
-                variant="ghost"
-                size="icon"
-                onClick={() => setTheme(theme === 'dark' ? 'light' : 'dark')}
-                aria-label="Toggle theme"
-              >
-                {theme === 'dark' ? (
-                  <Sun className="h-5 w-5" />
-                ) : (
-                  <Moon className="h-5 w-5" />
-                )}
-              </Button>
-            )}
             <RoleSwitcherPill currentBasePath={basePath} />
             <NotificationBell />
             <DropdownMenu>
diff --git a/tailwind.config.ts b/tailwind.config.ts
index 60b8115..bcf66e4 100644
--- a/tailwind.config.ts
+++ b/tailwind.config.ts
@@ -1,7 +1,6 @@
 import type { Config } from 'tailwindcss'
 
 const config: Config = {
-  darkMode: 'class',
   content: [
     './src/pages/**/*.{js,ts,jsx,tsx,mdx}',
     './src/components/**/*.{js,ts,jsx,tsx,mdx}',