diff --git a/CHANGELOG.md b/CHANGELOG.md
index c877e31..83b8a44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,7 +31,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 - **No more loading flicker.** Fast-loading pages no longer flash a loading state for a split second before showing content.
 - **Organization context switch.** Switching away from a deleted organization now stores the session correctly instead of using an insecure fallback.
-- **Removed debug logs.** Auth and organization-switching details no longer leak into the browser console in production.
+- **Removed debug logs.** Auth and organization-switching details no longer leak into the browser console in production. Error logs are now also suppressed in production and only appear during development.
 - **Dark mode uptime chart.** The response time chart on the uptime page now correctly follows your dark mode preference instead of always showing a white tooltip background.
 
 ## [0.10.0-alpha] - 2026-02-21
diff --git a/app/actions/auth.ts b/app/actions/auth.ts
index f618157..869cfff 100644
--- a/app/actions/auth.ts
+++ b/app/actions/auth.ts
@@ -1,6 +1,7 @@
 'use server'
 
 import { cookies } from 'next/headers'
+import { logger } from '@/lib/utils/logger'
 
 const AUTH_API_URL = process.env.NEXT_PUBLIC_AUTH_API_URL || process.env.NEXT_PUBLIC_AUTH_URL || 'http://localhost:8081'
 
@@ -102,7 +103,7 @@ export async function exchangeAuthCode(code: string, codeVerifier: string, redir
     }
 
   } catch (error: unknown) {
-    console.error('Auth Exchange Error:', error)
+    logger.error('Auth Exchange Error:', error)
     const isNetwork =
       error instanceof TypeError ||
       (error instanceof Error && (error.name === 'AbortError' || /fetch|network|ECONNREFUSED|ETIMEDOUT/i.test(error.message)))
@@ -152,7 +153,7 @@ export async function setSessionAction(accessToken: string, refreshToken?: strin
             }
         }
     } catch (e) {
-        console.error('[setSessionAction] Error:', e)
+        logger.error('[setSessionAction] Error:', e)
         return { success: false as const, error: 'invalid' }
     }
 }
diff --git a/app/auth/callback/page.tsx b/app/auth/callback/page.tsx
index 30396c4..b2a8c34 100644
--- a/app/auth/callback/page.tsx
+++ b/app/auth/callback/page.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useEffect, useState, Suspense, useRef, useCallback } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { useRouter, useSearchParams } from 'next/navigation'
 import { useAuth } from '@/lib/auth/context'
 import { AUTH_URL, default as apiRequest } from '@/lib/api/client'
@@ -96,7 +97,7 @@ function AuthCallbackContent() {
       return
     }
     if (state !== storedState) {
-      console.error('State mismatch', { received: state, stored: storedState })
+      logger.error('State mismatch', { received: state, stored: storedState })
       setError('Invalid state')
       return
     }
diff --git a/app/layout-content.tsx b/app/layout-content.tsx
index 14d3b49..727254f 100644
--- a/app/layout-content.tsx
+++ b/app/layout-content.tsx
@@ -8,6 +8,7 @@ import { useAuth } from '@/lib/auth/context'
 import { useOnlineStatus } from '@/lib/hooks/useOnlineStatus'
 import Link from 'next/link'
 import { useEffect, useState } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { getUserOrganizations, switchContext } from '@/lib/api/organization'
 import { setSessionAction } from '@/app/actions/auth'
 import { LoadingOverlay } from '@ciphera-net/ui'
@@ -39,7 +40,7 @@ export default function LayoutContent({ children }: { children: React.ReactNode
     if (auth.user) {
       getUserOrganizations()
         .then((organizations) => setOrgs(Array.isArray(organizations) ? organizations : []))
-        .catch(err => console.error('Failed to fetch orgs for header', err))
+        .catch(err => logger.error('Failed to fetch orgs for header', err))
     }
   }, [auth.user])
 
@@ -51,7 +52,7 @@ export default function LayoutContent({ children }: { children: React.ReactNode
       sessionStorage.setItem(ORG_SWITCH_KEY, 'true')
       window.location.reload()
     } catch (err) {
-      console.error('Failed to switch organization', err)
+      logger.error('Failed to switch organization', err)
     }
   }
 
diff --git a/app/sites/[id]/page.tsx b/app/sites/[id]/page.tsx
index 689b4b0..8622551 100644
--- a/app/sites/[id]/page.tsx
+++ b/app/sites/[id]/page.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useAuth } from '@/lib/auth/context'
+import { logger } from '@/lib/utils/logger'
 import { useCallback, useEffect, useState } from 'react'
 import { useParams, useRouter } from 'next/navigation'
 import { motion } from 'framer-motion'
@@ -85,7 +86,7 @@ export default function SiteDashboardPage() {
         if (settings.multiDayInterval) setMultiDayInterval(settings.multiDayInterval)
       }
     } catch (e) {
-      console.error('Failed to load dashboard settings', e)
+      logger.error('Failed to load dashboard settings', e)
     } finally {
       setIsSettingsLoaded(true)
     }
@@ -103,7 +104,7 @@ export default function SiteDashboardPage() {
       }
       localStorage.setItem('pulse_dashboard_settings', JSON.stringify(settings))
     } catch (e) {
-      console.error('Failed to save dashboard settings', e)
+      logger.error('Failed to save dashboard settings', e)
     }
   }
 
diff --git a/app/sites/new/page.tsx b/app/sites/new/page.tsx
index 7e651d6..da34c13 100644
--- a/app/sites/new/page.tsx
+++ b/app/sites/new/page.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { useRouter } from 'next/navigation'
 import Link from 'next/link'
 import { createSite, listSites, getSite, type Site } from '@/lib/api/sites'
@@ -65,7 +66,7 @@ export default function NewSitePage() {
           router.replace('/')
         }
       } catch (error) {
-        console.error('Failed to check limits', error)
+        logger.error('Failed to check limits', error)
       } finally {
         setLimitsChecked(true)
       }
diff --git a/components/PricingSection.tsx b/components/PricingSection.tsx
index d0f4587..42b7663 100644
--- a/components/PricingSection.tsx
+++ b/components/PricingSection.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { useSearchParams } from 'next/navigation'
 import { motion } from 'framer-motion'
 import { Button, CheckCircleIcon } from '@ciphera-net/ui'
@@ -140,7 +141,7 @@ export default function PricingSection() {
         // Clear intent
         localStorage.removeItem('pulse_pending_checkout')
       } catch (e) {
-        console.error('Failed to parse pending checkout', e)
+        logger.error('Failed to parse pending checkout', e)
         localStorage.removeItem('pulse_pending_checkout')
       }
     }
@@ -203,7 +204,7 @@ export default function PricingSection() {
       }
 
     } catch (error: unknown) {
-      console.error('Checkout error:', error)
+      logger.error('Checkout error:', error)
       toast.error('Failed to start checkout — please try again')
     } finally {
       setLoadingPlan(null)
diff --git a/components/WorkspaceSwitcher.tsx b/components/WorkspaceSwitcher.tsx
index 4610e44..6d8ff26 100644
--- a/components/WorkspaceSwitcher.tsx
+++ b/components/WorkspaceSwitcher.tsx
@@ -5,6 +5,7 @@ import { useRouter } from 'next/navigation'
 import { PlusIcon, PersonIcon, CubeIcon, CheckIcon } from '@radix-ui/react-icons'
 import { switchContext, OrganizationMember } from '@/lib/api/organization'
 import { setSessionAction } from '@/app/actions/auth'
+import { logger } from '@/lib/utils/logger'
 import Link from 'next/link'
 
 export default function OrganizationSwitcher({ orgs, activeOrgId }: { orgs: OrganizationMember[], activeOrgId: string | null }) {
@@ -37,7 +38,7 @@ export default function OrganizationSwitcher({ orgs, activeOrgId }: { orgs: Orga
       window.location.reload()
       
     } catch (err) {
-      console.error('Failed to switch organization', err)
+      logger.error('Failed to switch organization', err)
       setSwitching(null)
     }
   }
diff --git a/components/dashboard/Campaigns.tsx b/components/dashboard/Campaigns.tsx
index f15efd2..31bed08 100644
--- a/components/dashboard/Campaigns.tsx
+++ b/components/dashboard/Campaigns.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect, useMemo } from 'react'
+import { logger } from '@/lib/utils/logger'
 import Link from 'next/link'
 import Image from 'next/image'
 import { formatNumber } from '@ciphera-net/ui'
@@ -58,7 +59,7 @@ export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
         const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 10)
         setData(result)
       } catch (e) {
-        console.error(e)
+        logger.error(e)
       } finally {
         setIsLoading(false)
       }
@@ -74,7 +75,7 @@ export default function Campaigns({ siteId, dateRange }: CampaignsProps) {
           const result = await getCampaigns(siteId, dateRange.start, dateRange.end, 100)
           setFullData(result)
         } catch (e) {
-          console.error(e)
+          logger.error(e)
         } finally {
           setIsLoadingFull(false)
         }
diff --git a/components/dashboard/ContentStats.tsx b/components/dashboard/ContentStats.tsx
index 42c8169..7f2e956 100644
--- a/components/dashboard/ContentStats.tsx
+++ b/components/dashboard/ContentStats.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { formatNumber } from '@ciphera-net/ui'
 import { useTabListKeyboard } from '@/lib/hooks/useTabListKeyboard'
 import { TopPage, getTopPages, getEntryPages, getExitPages } from '@/lib/api/stats'
@@ -50,7 +51,7 @@ export default function ContentStats({ topPages, entryPages, exitPages, domain,
           }
           setFullData(filterGenericPaths(data))
         } catch (e) {
-          console.error(e)
+          logger.error(e)
         } finally {
           setIsLoadingFull(false)
         }
diff --git a/components/dashboard/Locations.tsx b/components/dashboard/Locations.tsx
index e22b4bc..cb71101 100644
--- a/components/dashboard/Locations.tsx
+++ b/components/dashboard/Locations.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { formatNumber } from '@ciphera-net/ui'
 import { useTabListKeyboard } from '@/lib/hooks/useTabListKeyboard'
 import * as Flags from 'country-flag-icons/react/3x2'
@@ -48,7 +49,7 @@ export default function Locations({ countries, cities, regions, geoDataLevel = '
           }
           setFullData(data)
         } catch (e) {
-          console.error(e)
+          logger.error(e)
         } finally {
           setIsLoadingFull(false)
         }
diff --git a/components/dashboard/TechSpecs.tsx b/components/dashboard/TechSpecs.tsx
index 0655650..8f3a82f 100644
--- a/components/dashboard/TechSpecs.tsx
+++ b/components/dashboard/TechSpecs.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { formatNumber } from '@ciphera-net/ui'
 import { useTabListKeyboard } from '@/lib/hooks/useTabListKeyboard'
 import { getBrowserIcon, getOSIcon, getDeviceIcon } from '@/lib/utils/icons'
@@ -58,7 +59,7 @@ export default function TechSpecs({ browsers, os, devices, screenResolutions, co
           }
           setFullData(filterUnknown(data))
         } catch (e) {
-          console.error(e)
+          logger.error(e)
         } finally {
           setIsLoadingFull(false)
         }
diff --git a/components/dashboard/TopReferrers.tsx b/components/dashboard/TopReferrers.tsx
index fbfca1a..9e9fb1c 100644
--- a/components/dashboard/TopReferrers.tsx
+++ b/components/dashboard/TopReferrers.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import Image from 'next/image'
 import { formatNumber } from '@ciphera-net/ui'
 import { getReferrerDisplayName, getReferrerFavicon, getReferrerIcon, mergeReferrersByDisplayName } from '@/lib/utils/icons'
@@ -66,7 +67,7 @@ export default function TopReferrers({ referrers, collectReferrers = true, siteI
           )
           setFullData(filtered)
         } catch (e) {
-          console.error(e)
+          logger.error(e)
         } finally {
           setIsLoadingFull(false)
         }
diff --git a/components/settings/OrganizationSettings.tsx b/components/settings/OrganizationSettings.tsx
index b122f45..764eca7 100644
--- a/components/settings/OrganizationSettings.tsx
+++ b/components/settings/OrganizationSettings.tsx
@@ -3,6 +3,7 @@
 import { useState, useEffect, useCallback, useRef } from 'react'
 import { useRouter, useSearchParams } from 'next/navigation'
 import { setSessionAction } from '@/app/actions/auth'
+import { logger } from '@/lib/utils/logger'
 import { useAuth } from '@/lib/auth/context'
 import { 
   deleteOrganization, 
@@ -170,7 +171,7 @@ export default function OrganizationSettings() {
       setOrgName(orgData.name)
       setOrgSlug(orgData.slug)
     } catch (error) {
-      console.error('Failed to load data:', error)
+      logger.error('Failed to load data:', error)
       // toast.error('Failed to load members')
     } finally {
       setIsLoadingMembers(false)
@@ -184,7 +185,7 @@ export default function OrganizationSettings() {
       const sub = await getSubscription()
       setSubscription(sub)
     } catch (error) {
-      console.error('Failed to load subscription:', error)
+      logger.error('Failed to load subscription:', error)
       // toast.error('Failed to load subscription details')
     } finally {
       setIsLoadingSubscription(false)
@@ -198,7 +199,7 @@ export default function OrganizationSettings() {
       const invs = await getInvoices()
       setInvoices(invs)
     } catch (error) {
-      console.error('Failed to load invoices:', error)
+      logger.error('Failed to load invoices:', error)
     } finally {
       setIsLoadingInvoices(false)
     }
@@ -247,7 +248,7 @@ export default function OrganizationSettings() {
       setAuditEntries(Array.isArray(entries) ? entries : [])
       setAuditTotal(typeof total === 'number' ? total : 0)
     } catch (error) {
-      console.error('Failed to load audit log', error)
+      logger.error('Failed to load audit log', error)
       toast.error(getAuthErrorMessage(error as Error) || 'Failed to load audit log entries')
     } finally {
       setIsLoadingAudit(false)
@@ -279,7 +280,7 @@ export default function OrganizationSettings() {
       setNotificationSettings(res.settings || {})
       setNotificationCategories(res.categories || [])
     } catch (error) {
-      console.error('Failed to load notification settings', error)
+      logger.error('Failed to load notification settings', error)
       toast.error(getAuthErrorMessage(error as Error) || 'Failed to load notification settings')
     } finally {
       setIsLoadingNotificationSettings(false)
@@ -422,13 +423,13 @@ export default function OrganizationSettings() {
         sessionStorage.setItem('pulse_switching_org', 'true')
         window.location.href = '/'
       } catch (switchErr) {
-        console.error('Failed to switch to personal context after delete:', switchErr)
+        logger.error('Failed to switch to personal context after delete:', switchErr)
         sessionStorage.setItem('pulse_switching_org', 'true')
         window.location.href = '/'
       }
       
     } catch (err: unknown) {
-      console.error(err)
+      logger.error(err)
       toast.error(getAuthErrorMessage(err) || (err instanceof Error ? err.message : '') || 'Failed to delete organization')
       setIsDeleting(false)
     }
diff --git a/components/tools/UtmBuilder.tsx b/components/tools/UtmBuilder.tsx
index 3e7dd7f..7f5ad34 100644
--- a/components/tools/UtmBuilder.tsx
+++ b/components/tools/UtmBuilder.tsx
@@ -1,6 +1,7 @@
 'use client'
 
 import { useState, useEffect } from 'react'
+import { logger } from '@/lib/utils/logger'
 import { CopyIcon, CheckIcon } from '@radix-ui/react-icons'
 import { listSites, Site } from '@/lib/api/sites'
 import { Select, Input, Button } from '@ciphera-net/ui'
@@ -30,7 +31,7 @@ export default function UtmBuilder({ initialSiteId }: UtmBuilderProps) {
         const data = await listSites()
         setSites(data)
       } catch (e) {
-        console.error('Failed to load sites for UTM builder', e)
+        logger.error('Failed to load sites for UTM builder', e)
       }
     }
     fetchSites()
diff --git a/lib/auth/context.tsx b/lib/auth/context.tsx
index ad834e1..537732b 100644
--- a/lib/auth/context.tsx
+++ b/lib/auth/context.tsx
@@ -6,6 +6,7 @@ import apiRequest from '@/lib/api/client'
 import { LoadingOverlay } from '@ciphera-net/ui'
 import { logoutAction, getSessionAction, setSessionAction } from '@/app/actions/auth'
 import { getUserOrganizations, switchContext } from '@/lib/api/organization'
+import { logger } from '@/lib/utils/logger'
 
 interface User {
   id: string
@@ -66,7 +67,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
           return merged
         })
       })
-      .catch((e) => console.error('Failed to fetch full profile after login', e))
+      .catch((e) => logger.error('Failed to fetch full profile after login', e))
   }
 
   const logout = useCallback(async () => {
@@ -96,7 +97,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
         return merged
       })
     } catch (e) {
-      console.error('Failed to refresh user data', e)
+      logger.error('Failed to refresh user data', e)
     }
     router.refresh()
   }, [router])
@@ -121,7 +122,7 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
               setUser(merged)
               localStorage.setItem('user', JSON.stringify(merged))
             } catch (e) {
-              console.error('Failed to fetch full profile', e)
+              logger.error('Failed to fetch full profile', e)
             }
         } else {
             // * Session invalid/expired
@@ -178,11 +179,11 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
                      router.refresh()
                  }
              } catch (e) {
-                 console.error('Failed to auto-switch context', e)
+                 logger.error('Failed to auto-switch context', e)
              }
           }
         } catch (e) {
-          console.error("Failed to fetch organizations", e)
+          logger.error("Failed to fetch organizations", e)
         }
       }
     }
diff --git a/lib/utils/logger.ts b/lib/utils/logger.ts
new file mode 100644
index 0000000..52f53b9
--- /dev/null
+++ b/lib/utils/logger.ts
@@ -0,0 +1,16 @@
+/**
+ * Dev-only logger that suppresses client-side output in production.
+ * Server-side logs always pass through (they go to server logs, not the browser).
+ */
+
+const isServer = typeof window === 'undefined'
+const isDev = process.env.NODE_ENV === 'development'
+
+export const logger = {
+  error(...args: unknown[]) {
+    if (isServer || isDev) console.error(...args)
+  },
+  warn(...args: unknown[]) {
+    if (isServer || isDev) console.warn(...args)
+  },
+}