diff --git a/lobby/templates/lobby/host_screen.html b/lobby/templates/lobby/host_screen.html
index 49f9d01..536c627 100644
--- a/lobby/templates/lobby/host_screen.html
+++ b/lobby/templates/lobby/host_screen.html
@@ -55,8 +55,12 @@
   <p id="hostCriticalPlayers">Spillere: afventer</p>
   <p id="hostCriticalRound">Aktiv round question: afventer</p>
 </section>
-<pre id="out">Klar.</pre>
+<pre id="out">Ready.</pre>
+{{ lobby_i18n|json_script:"wppHostI18n" }}
 <script>
+var WPP_HOST_LOCALE="{{ shell_locale|default:'en'|escapejs }}";
+var WPP_HOST_I18N=JSON.parse(document.getElementById("wppHostI18n").textContent||"{}");
+function hostCopy(path,fallback){var node=WPP_HOST_I18N;var parts=(path||"").split(".");for(var i=0;i<parts.length;i++){if(!node||typeof node!=="object"){return fallback||path;}node=node[parts[i]];}if(node&&typeof node==="object"){if(node[WPP_HOST_LOCALE]){return node[WPP_HOST_LOCALE];}if(node.en){return node.en;}}return typeof node==="string"?node:(fallback||path);} 
 var currentSessionStatus="";
 var autoRefreshEnabled=false;
 var autoRefreshTimer=null;
@@ -85,7 +89,7 @@ function code(){return document.getElementById("code").value.trim().toUpperCase(
 function rq(){return document.getElementById("roundQuestionId").value.trim();}
 function saveHostContext(){try{localStorage.setItem("wppHostContext",JSON.stringify({code:code(),round_question_id:rq(),session_status:currentSessionStatus||"",auto_refresh:autoRefreshEnabled}));}catch(_e){}}
 function restoreHostContext(){try{var raw=localStorage.getItem("wppHostContext");if(!raw){return false;}var ctx=JSON.parse(raw);if(ctx.code){document.getElementById("code").value=(ctx.code||"").toUpperCase();}if(ctx.round_question_id){document.getElementById("roundQuestionId").value=ctx.round_question_id;}if(ctx.session_status){currentSessionStatus=ctx.session_status;}autoRefreshEnabled=!!ctx.auto_refresh;updateAutoRefreshUi();return !!ctx.code;}catch(_e){return false;}}
-function phaseLabel(status){if(status==="lobby"){return"Lobby";}if(status==="lie"){return"Løgn";}if(status==="guess"){return"Gæt";}if(status==="reveal"){return"Reveal";}if(status==="finished"){return"Afsluttet";}return"Ukendt";}
+function phaseLabel(status){if(status==="lobby"){return"Lobby";}if(status==="lie"){return"Lie";}if(status==="guess"){return"Guess";}if(status==="reveal"){return"Reveal";}if(status==="finished"){return"Finished";}return"Unknown";}
 function hostShellRouteFromPath(){var marker="/lobby/ui/host";var path=(window.location.pathname||"").toLowerCase();var idx=path.indexOf(marker);if(idx===-1){return"";}var remainder=path.slice(idx+marker.length).replace(/^\/+|\/+$/g,"");if(!remainder){return"";}var route=remainder.split("/")[0];return HOST_SHELL_ROUTES[route]?route:"";}
 function expectedHostShellRoute(){return HOST_SHELL_ROUTES[currentSessionStatus]||"";}
 function syncHostShellRoute(){var currentRoute=hostShellRouteFromPath();var expectedRoute=expectedHostShellRoute();if(!currentRoute||!expectedRoute){hostShellRouteHint="";return;}if(currentRoute===expectedRoute){hostShellRouteHint="";return;}var nextPath="/lobby/ui/host/"+expectedRoute;window.history.replaceState(null,"",nextPath);hostShellRouteHint="Deep-link route guard: omdirigeret fra /"+currentRoute+" til /"+expectedRoute+" for fase "+phaseLabel(currentSessionStatus)+".";}
@@ -93,11 +97,11 @@ function updateAutoRefreshUi(){var btn=document.getElementById("autoRefreshToggl
 function stopAutoRefresh(reason){autoRefreshEnabled=false;if(autoRefreshTimer){clearInterval(autoRefreshTimer);autoRefreshTimer=null;}if(reason){var hint=document.getElementById("autoRefreshHint");if(hint){hint.textContent=reason;}}updateAutoRefreshUi();saveHostContext();}
 function startAutoRefresh(){if(!code()){updateAutoRefreshUi();return;}autoRefreshEnabled=true;if(autoRefreshTimer){clearInterval(autoRefreshTimer);}autoRefreshTimer=setInterval(function(){if(!code()||sessionDetailInFlight){return;}if(currentSessionStatus==="finished"){stopAutoRefresh("Auto-refresh stoppet: spillet er afsluttet.");return;}sessionDetail();},10000);updateAutoRefreshUi();saveHostContext();}
 function toggleAutoRefresh(){if(hostActionInFlight||sessionDetailInFlight||!code()){updateAutoRefreshUi();return;}if(autoRefreshEnabled){stopAutoRefresh();return;}startAutoRefresh();}
-function formatTimeLabel(dateObj){return dateObj.toLocaleTimeString("da-DK",{hour12:false});}
+function formatTimeLabel(dateObj){return dateObj.toLocaleTimeString(WPP_HOST_LOCALE,{hour12:false});}
 function markSessionRefresh(status){if(status>=200&&status<300){lastRefreshAtLabel=formatTimeLabel(new Date());lastRefreshFailed=false;}else{lastRefreshFailed=true;}updateLastRefreshStatus();}
 function updateLastRefreshStatus(){var el=document.getElementById("lastRefreshStatus");if(!el){return;}if(!lastRefreshAtLabel){el.textContent=lastRefreshFailed?"Session-data kan være forældet (ingen succesfuld opdatering endnu).":"Session-data ikke opdateret endnu.";return;}if(lastRefreshFailed){el.textContent="Session-data kan være forældet (seneste succes: "+lastRefreshAtLabel+").";return;}el.textContent="Sidst opdateret: "+lastRefreshAtLabel+".";}
 function normalizeApiError(data){if(!data||typeof data!=="object"){return"";}return (data.error_code||data.error||"").toString();}
-function mapUiErrorMessage(errorKey){if(!errorKey){return"";}var key=errorKey.toLowerCase();if(key.indexOf("phase")!==-1){return"Ugyldig fase for handlingen. Opdatér session-status og prøv igen.";}if(key.indexOf("token")!==-1||key.indexOf("auth")!==-1){return"Session-token er ugyldig eller udløbet. Rejoin sessionen og prøv igen.";}if(key.indexOf("round")!==-1||key.indexOf("question")!==-1||key.indexOf("state")!==-1){return"Runde-kontekst matcher ikke længere. Opdatér session-status før næste handling.";}if(key.indexOf("session")!==-1){return"Sessionkoden er ugyldig eller sessionen findes ikke længere.";}return"Handling fejlede. Opdatér session-status og prøv igen.";}
+function mapUiErrorMessage(errorKey){if(!errorKey){return"";}var key=errorKey.toLowerCase();if(WPP_HOST_I18N&&WPP_HOST_I18N.backend&&WPP_HOST_I18N.backend.errors&&WPP_HOST_I18N.backend.errors[key]){return hostCopy("backend.errors."+key,"Action failed. Refresh state and retry.");}if(key.indexOf("session")!==-1){return hostCopy("backend.errors.session_not_found_or_closed","Session code is invalid, or session no longer exists.");}return hostCopy("backend.errors.generic_action_failed_retry","Action failed. Refresh state and retry.");}
 function updateErrorHint(status,data){var el=document.getElementById("hostErrorHint");if(!el){return;}if(status>=200&&status<300){el.textContent="Ingen fejl.";return;}var errKey=normalizeApiError(data);el.textContent="Fejl: "+mapUiErrorMessage(errKey)+" ("+(errKey||("http_"+status))+")";}
 function updateCreateSessionState(){var btn=document.getElementById("createSessionBtn");var hint=document.getElementById("createSessionHint");if(btn){btn.disabled=hostActionInFlight||sessionDetailInFlight;}if(!hint){return;}if(hostActionInFlight){hint.textContent="Opret session er låst mens en host-handling kører.";return;}if(sessionDetailInFlight){hint.textContent="Opret session er låst mens session-opdatering kører.";return;}hint.textContent="Opret session er klar.";}function updateSessionDetailState(){var btn=document.getElementById("sessionDetailBtn");var hint=document.getElementById("sessionDetailHint");var codeInput=document.getElementById("code");if(btn){btn.disabled=sessionDetailInFlight||hostActionInFlight||!code();}if(codeInput){codeInput.readOnly=sessionDetailInFlight||hostActionInFlight;}if(!hint){return;}if(sessionDetailInFlight){hint.textContent="Opdaterer session-status…";return;}if(hostActionInFlight){hint.textContent="Session-opdatering er låst mens en host-handling kører.";return;}if(!code()){hint.textContent="Angiv sessionkode for at opdatere session-status.";updateHostShellErrorBoundary();return;}hint.textContent="Session-opdatering klar.";updateHostShellErrorBoundary();}
 
diff --git a/lobby/templates/lobby/player_screen.html b/lobby/templates/lobby/player_screen.html
index b0f3fc6..dc89472 100644
--- a/lobby/templates/lobby/player_screen.html
+++ b/lobby/templates/lobby/player_screen.html
@@ -69,8 +69,12 @@
   <p id="playerCriticalRound">Round question: afventer</p>
   <p id="playerCriticalJoin">Join-status: afventer</p>
 </section>
-<pre id="out">Klar.</pre>
+<pre id="out">Ready.</pre>
+{{ lobby_i18n|json_script:"wppPlayerI18n" }}
 <script>
+var WPP_PLAYER_LOCALE="{{ shell_locale|default:'en'|escapejs }}";
+var WPP_PLAYER_I18N=JSON.parse(document.getElementById("wppPlayerI18n").textContent||"{}");
+function playerCopy(path,fallback){var node=WPP_PLAYER_I18N;var parts=(path||"").split(".");for(var i=0;i<parts.length;i++){if(!node||typeof node!=="object"){return fallback||path;}node=node[parts[i]];}if(node&&typeof node==="object"){if(node[WPP_PLAYER_LOCALE]){return node[WPP_PLAYER_LOCALE];}if(node.en){return node.en;}}return typeof node==="string"?node:(fallback||path);} 
 var availableAnswers=[];
 var guessSubmitted=false;
 var lieSubmitted=false;
@@ -105,7 +109,7 @@ function clearPlayerShellFatalError(){playerShellFatalError=false;playerShellRec
 function recoverPlayerShell(mode){if(playerShellRecoverInFlight){return Promise.resolve({error:"recover_in_flight"});}playerShellRecoverInFlight=true;updatePlayerShellErrorBoundary();if(mode==="reload"){window.location.reload();return Promise.resolve({ok:true});}if(!code()){playerShellRecoverInFlight=false;updatePlayerShellErrorBoundary();return Promise.resolve({error:"missing_session_code"});}return sessionDetail().then(function(result){clearPlayerShellFatalError();return result;}).catch(function(err){playerShellRecoverInFlight=false;updatePlayerShellErrorBoundary();throw err;});}
 function pid(){return document.getElementById("playerId").value.trim();}
 function rq(){return document.getElementById("roundQuestionId").value.trim();}
-function phaseLabel(status){if(status==="lobby"){return"Lobby";}if(status==="lie"){return"Løgn";}if(status==="guess"){return"Gæt";}if(status==="reveal"){return"Reveal";}if(status==="finished"){return"Afsluttet";}return"Ukendt";}
+function phaseLabel(status){if(status==="lobby"){return"Lobby";}if(status==="lie"){return"Lie";}if(status==="guess"){return"Guess";}if(status==="reveal"){return"Reveal";}if(status==="finished"){return"Finished";}return"Unknown";}
 function updatePhaseStatus(){var el=document.getElementById("phaseStatus");if(!el){return;}if(!currentSessionStatus){el.textContent="Fase: ukendt (opdatér session-status).";return;}el.textContent="Fase: "+phaseLabel(currentSessionStatus)+" ("+currentSessionStatus+")";}
 function savePlayerContext(){try{localStorage.setItem(PLAYER_CONTEXT_KEY,JSON.stringify({code:code(),nickname:document.getElementById("nickname").value.trim(),player_id:pid(),session_token:document.getElementById("sessionToken").value.trim(),round_question_id:rq(),auto_refresh:playerAutoRefreshEnabled}));}catch(_e){}}
 function loadPlayerContext(){try{var raw=localStorage.getItem(PLAYER_CONTEXT_KEY);if(!raw){return null;}return JSON.parse(raw);}catch(_e){return null;}}
@@ -118,8 +122,8 @@ function resetRoundContextForManualChange(){document.getElementById("roundQuesti
 function updateContextLockState(){var locked=isPlayerContextLocked()||joinInFlight;var codeField=document.getElementById("code");var nicknameField=document.getElementById("nickname");var playerIdField=document.getElementById("playerId");var tokenField=document.getElementById("sessionToken");if(codeField){codeField.readOnly=locked;}if(nicknameField){nicknameField.readOnly=locked;}if(playerIdField){playerIdField.readOnly=locked;}if(tokenField){tokenField.readOnly=true;}var hint=document.getElementById("contextLockHint");if(!hint){return;}if(joinInFlight){hint.textContent="Låser kontekst…";return;}if(locked){hint.textContent="Spillerkontekst er låst efter join.";return;}hint.textContent="Kontekst er ikke låst endnu.";}
 function canAttemptJoin(){return !!(code()&&document.getElementById("nickname").value.trim());}
 function normalizeApiError(data){if(!data||typeof data!=="object"){return"";}return (data.error_code||data.error||"").toString();}
-function mapUiErrorMessage(errorKey){if(!errorKey){return"";}var key=errorKey.toLowerCase();if(key.indexOf("phase")!==-1){return"Ugyldig fase for handlingen. Opdatér session-status og prøv igen.";}if(key.indexOf("token")!==-1||key.indexOf("auth")!==-1){return"Session-token er ugyldig eller udløbet. Rejoin sessionen og prøv igen.";}if(key.indexOf("round")!==-1||key.indexOf("question")!==-1||key.indexOf("state")!==-1){return"Runde-kontekst matcher ikke længere. Opdatér session-status før næste handling.";}if(key.indexOf("session")!==-1){return"Sessionkoden er ugyldig eller sessionen findes ikke længere.";}return"Handling fejlede. Opdatér session-status og prøv igen.";}
-function formatTimeLabel(dateObj){return dateObj.toLocaleTimeString("da-DK",{hour12:false});}
+function mapUiErrorMessage(errorKey){if(!errorKey){return"";}var key=errorKey.toLowerCase();if(WPP_PLAYER_I18N&&WPP_PLAYER_I18N.backend&&WPP_PLAYER_I18N.backend.errors&&WPP_PLAYER_I18N.backend.errors[key]){return playerCopy("backend.errors."+key,"Action failed. Refresh state and retry.");}if(key.indexOf("session")!==-1){return playerCopy("backend.errors.session_not_found_or_closed","Session code is invalid, or session no longer exists.");}return playerCopy("backend.errors.generic_action_failed_retry","Action failed. Refresh state and retry.");}
+function formatTimeLabel(dateObj){return dateObj.toLocaleTimeString(WPP_PLAYER_LOCALE,{hour12:false});}
 function markPlayerSessionRefresh(status){if(status>=200&&status<300){playerLastRefreshAtLabel=formatTimeLabel(new Date());playerLastRefreshFailed=false;}else{playerLastRefreshFailed=true;}updatePlayerLastRefreshStatus();}
 function updatePlayerLastRefreshStatus(){var el=document.getElementById("playerLastRefreshStatus");if(!el){return;}if(!playerLastRefreshAtLabel){el.textContent=playerLastRefreshFailed?"Session-data kan være forældet (ingen succesfuld opdatering endnu).":"Session-data ikke opdateret endnu.";return;}if(playerLastRefreshFailed){el.textContent="Session-data kan være forældet (seneste succes: "+playerLastRefreshAtLabel+").";return;}el.textContent="Sidst opdateret: "+playerLastRefreshAtLabel+".";}
 function updatePlayerAutoRefreshUi(){var btn=document.getElementById("playerAutoRefreshToggleBtn");var hint=document.getElementById("playerAutoRefreshHint");if(btn){btn.textContent="Auto-refresh: "+(playerAutoRefreshEnabled?"ON":"OFF");btn.disabled=sessionDetailInFlight||joinInFlight||!code();}if(!hint){return;}if(sessionDetailInFlight){hint.textContent="Auto-refresh-lås: afvent aktiv session-opdatering.";return;}if(joinInFlight){hint.textContent="Auto-refresh-lås: afvent aktiv join.";return;}if(!code()){hint.textContent="Auto-refresh kræver sessionkode.";return;}if(!playerAutoRefreshEnabled){hint.textContent="Auto-refresh er slået fra.";return;}if(currentSessionStatus==="finished"){hint.textContent="Auto-refresh stoppet: spillet er afsluttet.";return;}hint.textContent="Auto-refresh aktiv (10s) for spillerstatus.";}
diff --git a/lobby/ui_views.py b/lobby/ui_views.py
index c1d2fcb..ba94cc6 100644
--- a/lobby/ui_views.py
+++ b/lobby/ui_views.py
@@ -40,6 +40,7 @@ def host_screen(request, spa_path=None):
         {
             "categories": categories,
             "lobby_i18n": lobby_i18n_catalog(),
+            "shell_locale": resolve_locale(request),
         },
     )
 
@@ -48,4 +49,8 @@ def player_screen(request):
     if use_spa_ui():
         return _render_spa_shell(request, "/player", "player")
 
-    return render(request, "lobby/player_screen.html", {"lobby_i18n": lobby_i18n_catalog()})
+    return render(
+        request,
+        "lobby/player_screen.html",
+        {"lobby_i18n": lobby_i18n_catalog(), "shell_locale": resolve_locale(request)},
+    )