From 1717f335f06482b38eb9adc01799904f3e434e17 Mon Sep 17 00:00:00 2001
From: corpi <lj845854@gmail.com>
Date: Tue, 10 Mar 2026 13:32:37 +0900
Subject: [PATCH] =?UTF-8?q?refactor(i18n):=20=EC=82=AC=EC=9A=A9=EC=9E=90?=
 =?UTF-8?q?=20=EB=AC=B8=EA=B5=AC=20=EC=B0=B8=EC=A1=B0=EB=A5=BC=20=EC=A4=91?=
 =?UTF-8?q?=EC=95=99=ED=99=94?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/app/(auth)/login/page.tsx                 |  17 +-
 src/app/admin/page.tsx                        | 200 ++++++++----------
 src/app/layout.tsx                            |   5 +-
 src/entities/media/api/mediaManifestApi.ts    |   3 +-
 src/entities/plan/model/mockPlan.ts           |  19 +-
 src/entities/scene/model/scenes.ts            | 121 +++++------
 src/entities/session/model/mockSession.ts     |  88 +-------
 src/features/admin/api/adminApi.ts            |   7 +-
 .../auth/components/SocialLoginGroup.tsx      |   3 +-
 src/features/auth/hooks/useSocialLogin.ts     |  11 +-
 src/features/exit-hold/ui/ExitHoldButton.tsx  |   7 +-
 .../model/useFocusSessionEngine.ts            |  15 +-
 src/features/inbox/ui/InboxList.tsx           |   7 +-
 .../ui/ManagePlanSheetContent.tsx             |  12 +-
 .../paywall-sheet/ui/PaywallSheetContent.tsx  |  16 +-
 src/features/plan-pill/ui/PlanPill.tsx        |   3 +-
 .../preferences/api/preferencesApi.ts         |   3 +-
 .../model/useUserFocusPreferences.ts          |   9 +-
 src/features/restart-30s/model/copy.ts        |  10 +-
 .../scene-select/ui/SceneSelectCarousel.tsx   |   3 +-
 .../session-goal/ui/SessionGoalField.tsx      |   8 +-
 .../sound-preset/model/useSoundPlayback.ts    |   5 +-
 .../sound-preset/ui/SoundPresetControls.tsx   |  22 +-
 src/features/stats/model/useFocusStats.ts     |   3 +-
 src/shared/config/settingsOptions.ts          |  10 +-
 src/shared/lib/apiClient.ts                   |   7 +-
 src/shared/ui/Modal.tsx                       |   5 +-
 .../ui/ControlCenterSheetWidget.tsx           |  22 +-
 .../settings-panel/ui/SettingsPanelWidget.tsx |  26 +--
 .../space-focus-hud/ui/GoalCompleteSheet.tsx  |  30 ++-
 .../ui/SpaceFocusHudWidget.tsx                |   9 +-
 .../ui/SpaceSetupDrawerWidget.tsx             |  30 +--
 .../space-sheet-shell/ui/SpaceSideSheet.tsx   |   5 +-
 .../ui/SpaceTimerHudWidget.tsx                |  19 +-
 .../space-tools-dock/ui/FocusRightRail.tsx    |   9 +-
 .../ui/SpaceToolsDockWidget.tsx               |  48 +++--
 src/widgets/space-tools-dock/ui/constants.tsx |   9 +-
 .../ui/panels/InboxToolPanel.tsx              |  13 +-
 .../ui/panels/SettingsToolPanel.tsx           |  16 +-
 .../ui/panels/StatsToolPanel.tsx              |   5 +-
 .../ui/popovers/QuickNotesPopover.tsx         |  10 +-
 .../ui/popovers/QuickSoundPopover.tsx         |   9 +-
 .../ui/SpaceWorkspaceWidget.tsx               |  19 +-
 .../stats-overview/ui/StatsOverviewWidget.tsx |  50 ++---
 44 files changed, 433 insertions(+), 515 deletions(-)

diff --git a/src/app/(auth)/login/page.tsx b/src/app/(auth)/login/page.tsx
index 81f200e..3156a87 100644
--- a/src/app/(auth)/login/page.tsx
+++ b/src/app/(auth)/login/page.tsx
@@ -1,23 +1,26 @@
 import Link from "next/link";
 import { SocialLoginGroup } from "@/features/auth/components/SocialLoginGroup";
+import { copy } from '@/shared/i18n';
 
 export default function LoginPage() {
+  const { login } = copy;
+
   return (
     <div className="min-h-screen bg-slate-50 flex flex-col justify-center items-center p-6 selection:bg-brand-soft/50">
       
       {/* 상단 로고 (홈으로 돌아가기) */}
       <Link href="/" className="mb-12 text-2xl font-bold text-brand-dark tracking-tight flex items-center gap-2 hover:opacity-80 transition-opacity">
-        <span className="text-3xl">🪴</span> VibeRoom
+        <span className="text-3xl">🪴</span> {copy.appName}
       </Link>
 
       {/* 로그인 카드 컨테이너 */}
       <div className="w-full max-w-md bg-white rounded-3xl shadow-sm border border-brand-dark/10 p-8 md:p-10">
         
         <div className="text-center mb-10">
-          <h1 className="text-2xl font-bold text-brand-dark mb-3">다시 오셨군요!</h1>
+          <h1 className="text-2xl font-bold text-brand-dark mb-3">{login.title}</h1>
           <p className="text-brand-dark/60 text-sm">
-            비밀번호를 외울 필요 없이,<br />
-            사용 중인 계정으로 3초 만에 시작하세요.
+            {login.descriptionFirstLine}<br />
+            {login.descriptionSecondLine}
           </p>
         </div>
 
@@ -28,8 +31,8 @@ export default function LoginPage() {
         <SocialLoginGroup />
 
         <div className="mt-10 text-center text-xs text-brand-dark/40 leading-relaxed">
-          로그인함으로써 VibeRoom의 <br className="md:hidden" />
-          <a href="#" className="underline hover:text-brand-dark/70">이용약관</a> 및 <a href="#" className="underline hover:text-brand-dark/70">개인정보처리방침</a>에 동의하게 됩니다.
+          {login.agreementPrefix} <br className="md:hidden" />
+          <a href="#" className="underline hover:text-brand-dark/70">{login.terms}</a> {login.agreementAnd} <a href="#" className="underline hover:text-brand-dark/70">{login.privacy}</a>{login.agreementSuffix}
         </div>
       </div>
       
@@ -37,4 +40,4 @@ export default function LoginPage() {
       <div className="fixed top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 w-[600px] h-[600px] bg-brand-soft/20 rounded-full blur-[100px] -z-10 pointer-events-none"></div>
     </div>
   );
-}
\ No newline at end of file
+}
diff --git a/src/app/admin/page.tsx b/src/app/admin/page.tsx
index 1bd1f82..deef730 100644
--- a/src/app/admin/page.tsx
+++ b/src/app/admin/page.tsx
@@ -3,6 +3,7 @@
 import { FormEvent, useEffect, useState } from 'react';
 import { adminApi, type SceneMediaAssetUploadResponse, type SoundMediaAssetUploadResponse } from '@/features/admin/api/adminApi';
 import type { AuthResponse } from '@/features/auth/types';
+import { copy } from '@/shared/i18n';
 import { Button } from '@/shared/ui';
 
 const ADMIN_STORAGE_KEY = 'vr_admin_session';
@@ -20,20 +21,7 @@ type NavItem = {
   section: string;
 };
 
-const navItems: NavItem[] = [
-  {
-    id: 'scene',
-    title: '이미지 등록',
-    subtitle: 'Scene background assets',
-    section: 'MEDIA',
-  },
-  {
-    id: 'sound',
-    title: '오디오 등록',
-    subtitle: 'Loop and preview assets',
-    section: 'MEDIA',
-  },
-];
+const navItems: NavItem[] = [...copy.admin.navItems];
 
 const readStoredSession = (): AuthResponse | null => {
   if (typeof window === 'undefined') {
@@ -76,48 +64,26 @@ const textareaClassName =
   'min-h-32 w-full rounded-xl border border-slate-200 bg-white px-3 py-3 text-sm text-slate-900 outline-none transition placeholder:text-slate-400 focus:border-sky-400 focus:ring-2 focus:ring-sky-100';
 
 const getViewMeta = (view: AdminView) => {
-  if (view === 'scene') {
-    return {
-      eyebrow: 'Image Registration',
-      title: 'Scene 이미지 등록',
-      description:
-        'Space에 들어온 사용자가 선택하는 배경 이미지 세트를 등록합니다. cardFile과 stageFile은 최초 생성 시 필수입니다.',
-      accent: 'sky',
-      statTitle: 'Image Pipeline',
-      statValue: 'Scene Assets',
-      statHint: 'R2 / Manifest Sync',
-    };
-  }
-
-  return {
-    eyebrow: 'Audio Registration',
-    title: 'Sound 오디오 등록',
-    description:
-      'Loop, preview, fallback 오디오를 등록합니다. loopFile은 최초 생성 시 필수이며 기본 볼륨과 duration 메타데이터를 함께 저장합니다.',
-    accent: 'emerald',
-    statTitle: 'Audio Pipeline',
-    statValue: 'Sound Assets',
-    statHint: 'Loop / Preview / Fallback',
-  };
+  return copy.admin.views[view];
 };
 
 const formatResultSummary = (uploadResult: UploadResult | null) => {
   if (!uploadResult) {
-    return '아직 업로드 작업이 없습니다.';
+    return copy.admin.inspector.noUploadSummary;
   }
 
   if (uploadResult.type === 'scene') {
-    return `${uploadResult.payload.sceneId} 이미지 세트가 최신 버전 ${uploadResult.payload.assetVersion}로 반영되었습니다.`;
+    return copy.admin.messages.sceneSummary(uploadResult.payload.sceneId, uploadResult.payload.assetVersion);
   }
 
-  return `${uploadResult.payload.presetId} 오디오 세트가 최신 버전 ${uploadResult.payload.assetVersion}로 반영되었습니다.`;
+  return copy.admin.messages.soundSummary(uploadResult.payload.presetId, uploadResult.payload.assetVersion);
 };
 
 export default function AdminPage() {
   const [session, setSession] = useState<AuthResponse | null>(null);
   const [activeView, setActiveView] = useState<AdminView>('scene');
-  const [loginId, setLoginId] = useState('qwer1234');
-  const [password, setPassword] = useState('qwer1234!');
+  const [loginId, setLoginId] = useState<string>(copy.admin.defaultLoginId);
+  const [password, setPassword] = useState<string>(copy.admin.defaultPassword);
   const [loginError, setLoginError] = useState<string | null>(null);
   const [loginPending, setLoginPending] = useState(false);
   const [scenePending, setScenePending] = useState(false);
@@ -142,13 +108,13 @@ export default function AdminPage() {
       });
 
       if (response.user?.grade !== 'ADMIN') {
-        throw new Error('ADMIN 권한이 없는 계정입니다.');
+        throw new Error(copy.admin.messages.nonAdmin);
       }
 
       setSession(response);
       storeSession(response);
     } catch (error) {
-      setLoginError(error instanceof Error ? error.message : '로그인에 실패했습니다.');
+      setLoginError(error instanceof Error ? error.message : copy.admin.messages.loginFailed);
     } finally {
       setLoginPending(false);
     }
@@ -166,7 +132,7 @@ export default function AdminPage() {
   const handleSceneUpload = async (event: FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     if (!session?.accessToken) {
-      setSceneMessage('먼저 관리자 로그인을 해주세요.');
+      setSceneMessage(copy.admin.messages.loginRequired);
       return;
     }
 
@@ -179,7 +145,7 @@ export default function AdminPage() {
       const sceneId = String(source.get('sceneId') ?? '').trim();
 
       if (!sceneId) {
-        throw new Error('sceneId를 입력해주세요.');
+        throw new Error(copy.admin.messages.sceneIdRequired);
       }
 
       const formData = new FormData();
@@ -199,10 +165,10 @@ export default function AdminPage() {
 
       const response = await adminApi.uploadScene(sceneId, formData, session.accessToken);
       setUploadResult({ type: 'scene', payload: response });
-      setSceneMessage(`scene "${sceneId}" 업로드가 완료되었습니다.`);
+      setSceneMessage(copy.admin.messages.sceneUploadDone(sceneId));
       form.reset();
     } catch (error) {
-      setSceneMessage(error instanceof Error ? error.message : 'scene 업로드에 실패했습니다.');
+      setSceneMessage(error instanceof Error ? error.message : copy.admin.messages.sceneUploadFailed);
     } finally {
       setScenePending(false);
     }
@@ -211,7 +177,7 @@ export default function AdminPage() {
   const handleSoundUpload = async (event: FormEvent<HTMLFormElement>) => {
     event.preventDefault();
     if (!session?.accessToken) {
-      setSoundMessage('먼저 관리자 로그인을 해주세요.');
+      setSoundMessage(copy.admin.messages.loginRequired);
       return;
     }
 
@@ -224,7 +190,7 @@ export default function AdminPage() {
       const presetId = String(source.get('presetId') ?? '').trim();
 
       if (!presetId) {
-        throw new Error('presetId를 입력해주세요.');
+        throw new Error(copy.admin.messages.presetIdRequired);
       }
 
       const formData = new FormData();
@@ -244,10 +210,10 @@ export default function AdminPage() {
 
       const response = await adminApi.uploadSound(presetId, formData, session.accessToken);
       setUploadResult({ type: 'sound', payload: response });
-      setSoundMessage(`sound "${presetId}" 업로드가 완료되었습니다.`);
+      setSoundMessage(copy.admin.messages.soundUploadDone(presetId));
       form.reset();
     } catch (error) {
-      setSoundMessage(error instanceof Error ? error.message : 'sound 업로드에 실패했습니다.');
+      setSoundMessage(error instanceof Error ? error.message : copy.admin.messages.soundUploadFailed);
     } finally {
       setSoundPending(false);
     }
@@ -267,15 +233,15 @@ export default function AdminPage() {
                   V
                 </div>
                 <div>
-                  <p className="text-xl font-semibold tracking-tight">VibeRoom</p>
-                  <p className="text-xs uppercase tracking-[0.28em] text-slate-400">Admin Console</p>
+                  <p className="text-xl font-semibold tracking-tight">{copy.appName}</p>
+                  <p className="text-xs uppercase tracking-[0.28em] text-slate-400">{copy.admin.consoleLabel}</p>
                 </div>
               </div>
 
               <div className="mt-12 space-y-8">
                 <div>
                   <p className="mb-4 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-                    Media Operations
+                    {copy.admin.mediaOperations}
                   </p>
                   <div className="space-y-2">
                     {navItems.map((item, index) => (
@@ -296,36 +262,36 @@ export default function AdminPage() {
                 </div>
 
                 <div className="rounded-2xl border border-white/8 bg-white/5 p-5">
-                  <p className="text-xs uppercase tracking-[0.24em] text-slate-500">Access</p>
-                  <p className="mt-3 text-2xl font-semibold">Admin Only</p>
+                  <p className="text-xs uppercase tracking-[0.24em] text-slate-500">{copy.admin.access}</p>
+                  <p className="mt-3 text-2xl font-semibold">{copy.admin.accessTitle}</p>
                   <p className="mt-2 text-sm leading-6 text-slate-400">
-                    로그인 후 업로드 토큰으로 scene 이미지와 sound 오디오를 바로 R2에 반영합니다.
+                    {copy.admin.accessDescription}
                   </p>
                 </div>
               </div>
             </div>
 
             <p className="text-xs uppercase tracking-[0.24em] text-slate-500">
-              Local admin credentials
+              {copy.admin.localCredentialsHint}
             </p>
           </aside>
 
           <section className="flex items-center justify-center px-6 py-10">
             <div className="w-full max-w-md rounded-[28px] border border-slate-200 bg-white px-8 py-8 shadow-[0_30px_80px_rgba(15,23,42,0.08)]">
               <div className="mb-8">
-                <p className="text-xs font-semibold uppercase tracking-[0.28em] text-sky-600">Sign In</p>
+                <p className="text-xs font-semibold uppercase tracking-[0.28em] text-sky-600">{copy.admin.signInEyebrow}</p>
                 <h1 className="mt-3 text-3xl font-semibold tracking-tight text-slate-950">
-                  관리자 로그인
+                  {copy.admin.loginTitle}
                 </h1>
                 <p className="mt-3 text-sm leading-6 text-slate-500">
-                  관리자 권한이 확인되면 좌측 사이드바 기반 대시보드가 열립니다.
+                  {copy.admin.loginDescription}
                 </p>
               </div>
 
               <form className="space-y-4" onSubmit={handleLogin}>
                 <div>
                   <label htmlFor="admin-login-id" className="mb-2 block text-sm font-medium text-slate-700">
-                    아이디
+                    {copy.admin.loginIdLabel}
                   </label>
                   <input
                     id="admin-login-id"
@@ -333,12 +299,12 @@ export default function AdminPage() {
                     value={loginId}
                     onChange={(event) => setLoginId(event.target.value)}
                     autoComplete="username"
-                    placeholder="qwer1234"
+                    placeholder={copy.admin.defaultLoginId}
                   />
                 </div>
                 <div>
                   <label htmlFor="admin-login-password" className="mb-2 block text-sm font-medium text-slate-700">
-                    비밀번호
+                    {copy.admin.loginPasswordLabel}
                   </label>
                   <input
                     id="admin-login-password"
@@ -347,7 +313,7 @@ export default function AdminPage() {
                     value={password}
                     onChange={(event) => setPassword(event.target.value)}
                     autoComplete="current-password"
-                    placeholder="qwer1234!"
+                    placeholder={copy.admin.defaultPassword}
                   />
                 </div>
                 {loginError ? (
@@ -356,7 +322,7 @@ export default function AdminPage() {
                   </div>
                 ) : null}
                 <Button type="submit" size="full" className="h-12 rounded-xl" disabled={loginPending}>
-                  {loginPending ? '로그인 중...' : '대시보드 열기'}
+                  {loginPending ? copy.admin.loggingIn : copy.admin.openDashboard}
                 </Button>
               </form>
             </div>
@@ -375,15 +341,15 @@ export default function AdminPage() {
               V
             </div>
             <div>
-              <p className="text-2xl font-semibold tracking-tight">VibeRoom</p>
-              <p className="text-xs uppercase tracking-[0.28em] text-slate-400">Media Admin</p>
+              <p className="text-2xl font-semibold tracking-tight">{copy.appName}</p>
+              <p className="text-xs uppercase tracking-[0.28em] text-slate-400">{copy.admin.mediaAdminLabel}</p>
             </div>
           </div>
 
           <nav className="mt-10 flex-1">
             <div className="px-3">
               <p className="mb-4 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-                Media
+                {copy.admin.navItems[0].section}
               </p>
             </div>
 
@@ -414,16 +380,16 @@ export default function AdminPage() {
 
             <div className="mt-10 px-3">
               <p className="mb-4 text-xs font-semibold uppercase tracking-[0.24em] text-slate-500">
-                Session
+                {copy.admin.sessionSection}
               </p>
               <div className="space-y-3 text-sm text-slate-300">
                 <div>
-                  <p className="text-xs uppercase tracking-[0.2em] text-slate-500">Admin</p>
-                  <p className="mt-1 font-medium text-white">{session.user?.name ?? '관리자'}</p>
+                  <p className="text-xs uppercase tracking-[0.2em] text-slate-500">{copy.admin.sessionAdminLabel}</p>
+                  <p className="mt-1 font-medium text-white">{session.user?.name ?? copy.common.admin}</p>
                 </div>
                 <div>
-                  <p className="text-xs uppercase tracking-[0.2em] text-slate-500">Role</p>
-                  <p className="mt-1 font-medium text-emerald-300">{session.user?.grade ?? 'ADMIN'} Access</p>
+                  <p className="text-xs uppercase tracking-[0.2em] text-slate-500">{copy.admin.sessionRoleLabel}</p>
+                  <p className="mt-1 font-medium text-emerald-300">{session.user?.grade ?? 'ADMIN'}{copy.admin.roleAccessSuffix}</p>
                 </div>
               </div>
             </div>
@@ -437,7 +403,7 @@ export default function AdminPage() {
               className="h-11 justify-start rounded-xl bg-white/6 px-4 text-white hover:bg-white/10"
               onClick={handleLogout}
             >
-              로그아웃
+              {copy.admin.logout}
             </Button>
           </div>
         </aside>
@@ -454,7 +420,7 @@ export default function AdminPage() {
                 </button>
                 <div className="relative w-full max-w-md">
                   <input
-                    value={activeView === 'scene' ? 'scene assets' : 'sound assets'}
+                    value={activeView === 'scene' ? copy.admin.searchValues.scene : copy.admin.searchValues.sound}
                     readOnly
                     className="h-11 w-full rounded-xl border border-slate-200 bg-slate-50 pl-11 pr-4 text-sm text-slate-500 outline-none"
                   />
@@ -467,14 +433,14 @@ export default function AdminPage() {
               <div className="flex items-center gap-3">
                 <div className="hidden items-center gap-2 rounded-full bg-slate-100 px-3 py-2 text-xs font-medium text-slate-500 md:flex">
                   <span className="h-2 w-2 rounded-full bg-emerald-400" />
-                  Manifest Ready
+                  {copy.admin.manifestReady}
                 </div>
                 <div className="flex h-11 items-center gap-3 rounded-full border border-slate-200 bg-white px-4">
                   <div className="flex h-8 w-8 items-center justify-center rounded-full bg-slate-900 text-xs font-semibold text-white">
                     A
                   </div>
                   <div className="hidden sm:block">
-                    <p className="text-sm font-semibold text-slate-900">{session.user?.name ?? 'Admin'}</p>
+                    <p className="text-sm font-semibold text-slate-900">{session.user?.name ?? copy.common.admin}</p>
                     <p className="text-xs text-slate-500">{session.user?.email}</p>
                   </div>
                 </div>
@@ -503,20 +469,20 @@ export default function AdminPage() {
                     <p className="mt-2 text-sm text-slate-500">{activeMeta.statHint}</p>
                   </div>
                   <div className="rounded-2xl border border-slate-200 bg-white px-5 py-5">
-                    <p className="text-sm font-medium text-slate-500">Current Role</p>
+                    <p className="text-sm font-medium text-slate-500">{copy.admin.inspector.currentRoleTitle}</p>
                     <p className="mt-6 text-3xl font-semibold tracking-tight text-slate-950">
                       {session.user?.grade ?? 'ADMIN'}
                     </p>
-                    <p className="mt-2 text-sm text-slate-500">Bearer token enabled session</p>
+                    <p className="mt-2 text-sm text-slate-500">{copy.admin.inspector.bearerTokenSession}</p>
                   </div>
                 </div>
 
                 {activeView === 'scene' ? (
                   <form onSubmit={handleSceneUpload} className="rounded-2xl border border-slate-200 bg-white">
                     <div className="border-b border-slate-200 px-6 py-5">
-                      <p className="text-lg font-semibold text-slate-950">이미지 등록 워크스페이스</p>
+                      <p className="text-lg font-semibold text-slate-950">{copy.admin.views.scene.workspaceTitle}</p>
                       <p className="mt-1 text-sm text-slate-500">
-                        왼쪽 메뉴는 유지되고, 이 중앙 영역만 `이미지 등록` 작업으로 전환됩니다.
+                        {copy.admin.views.scene.workspaceDescription}
                       </p>
                     </div>
 
@@ -525,61 +491,61 @@ export default function AdminPage() {
                         <div className="grid gap-5 md:grid-cols-2">
                           <div>
                             <label htmlFor="scene-id" className="mb-2 block text-sm font-medium text-slate-700">
-                              Scene ID
+                              {copy.admin.views.scene.sceneIdLabel}
                             </label>
-                            <input id="scene-id" name="sceneId" className={fieldClassName} placeholder="rain-window" />
+                            <input id="scene-id" name="sceneId" className={fieldClassName} placeholder={copy.admin.views.scene.sceneIdPlaceholder} />
                           </div>
                           <div>
                             <label className="mb-2 block text-sm font-medium text-slate-700">
-                              Placeholder Gradient
+                              {copy.admin.views.scene.placeholderGradientLabel}
                             </label>
                             <input
                               name="placeholderGradient"
                               className={fieldClassName}
-                              placeholder="linear-gradient(160deg, #1e293b 0%, #0f172a 100%)"
+                              placeholder={copy.admin.views.scene.placeholderGradientPlaceholder}
                             />
                           </div>
                         </div>
 
                         <div className="mt-5 grid gap-5 md:grid-cols-2">
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Card Image</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.scene.cardImageLabel}</label>
                             <input name="cardFile" type="file" accept="image/*" className={fileClassName} />
                           </div>
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Stage Image</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.scene.stageImageLabel}</label>
                             <input name="stageFile" type="file" accept="image/*" className={fileClassName} />
                           </div>
                         </div>
 
                         <div className="mt-5 grid gap-5 md:grid-cols-2">
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Mobile Stage</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.scene.mobileStageLabel}</label>
                             <input name="mobileStageFile" type="file" accept="image/*" className={fileClassName} />
                           </div>
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">HD Stage</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.scene.hdStageLabel}</label>
                             <input name="hdStageFile" type="file" accept="image/*" className={fileClassName} />
                           </div>
                         </div>
 
                         <div className="mt-5">
-                          <label className="mb-2 block text-sm font-medium text-slate-700">Blur Data URL</label>
+                          <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.scene.blurDataUrlLabel}</label>
                           <textarea
                             name="blurDataUrl"
                             rows={6}
                             className={textareaClassName}
-                            placeholder="data:image/jpeg;base64,..."
+                            placeholder={copy.admin.views.scene.blurDataUrlPlaceholder}
                           />
                         </div>
                       </div>
 
                       <div className="border-t border-slate-200 bg-slate-50 px-6 py-6 xl:border-l xl:border-t-0">
-                        <p className="text-sm font-semibold text-slate-900">업로드 메모</p>
+                        <p className="text-sm font-semibold text-slate-900">{copy.admin.views.scene.notesTitle}</p>
                         <ul className="mt-4 space-y-3 text-sm leading-6 text-slate-500">
-                          <li>최초 생성 시 `cardFile`, `stageFile`은 필수입니다.</li>
-                          <li>모바일과 HD 파일은 선택값이며 빠지면 기존 값을 유지합니다.</li>
-                          <li>업로드 즉시 R2 경로와 manifest 응답 값이 갱신됩니다.</li>
+                          {copy.admin.views.scene.notes.map((note) => (
+                            <li key={note}>{note}</li>
+                          ))}
                         </ul>
 
                         {currentMessage ? (
@@ -593,7 +559,7 @@ export default function AdminPage() {
                           className="mt-6 h-12 w-full rounded-xl bg-slate-900 hover:bg-slate-800"
                           disabled={scenePending}
                         >
-                          {scenePending ? '이미지 업로드 중...' : '이미지 등록'}
+                          {scenePending ? copy.admin.views.scene.pending : copy.admin.views.scene.submit}
                         </Button>
                       </div>
                     </div>
@@ -601,9 +567,9 @@ export default function AdminPage() {
                 ) : (
                   <form onSubmit={handleSoundUpload} className="rounded-2xl border border-slate-200 bg-white">
                     <div className="border-b border-slate-200 px-6 py-5">
-                      <p className="text-lg font-semibold text-slate-950">오디오 등록 워크스페이스</p>
+                      <p className="text-lg font-semibold text-slate-950">{copy.admin.views.sound.workspaceTitle}</p>
                       <p className="mt-1 text-sm text-slate-500">
-                        좌측 네비게이션은 고정되고, 이 중앙 영역만 `오디오 등록` 작업으로 바뀝니다.
+                        {copy.admin.views.sound.workspaceDescription}
                       </p>
                     </div>
 
@@ -612,43 +578,43 @@ export default function AdminPage() {
                         <div className="grid gap-5 md:grid-cols-3">
                           <div className="md:col-span-1">
                             <label htmlFor="preset-id" className="mb-2 block text-sm font-medium text-slate-700">
-                              Preset ID
+                              {copy.admin.views.sound.presetIdLabel}
                             </label>
-                            <input id="preset-id" name="presetId" className={fieldClassName} placeholder="rain-focus" />
+                            <input id="preset-id" name="presetId" className={fieldClassName} placeholder={copy.admin.views.sound.presetIdPlaceholder} />
                           </div>
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Duration Sec</label>
-                            <input name="durationSec" type="number" min={0} className={fieldClassName} placeholder="1800" />
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.sound.durationLabel}</label>
+                            <input name="durationSec" type="number" min={0} className={fieldClassName} placeholder={copy.admin.views.sound.durationPlaceholder} />
                           </div>
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Default Volume</label>
-                            <input name="defaultVolume" type="number" min={0} max={100} className={fieldClassName} placeholder="60" />
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.sound.defaultVolumeLabel}</label>
+                            <input name="defaultVolume" type="number" min={0} max={100} className={fieldClassName} placeholder={copy.admin.views.sound.defaultVolumePlaceholder} />
                           </div>
                         </div>
 
                         <div className="mt-5 grid gap-5 md:grid-cols-2">
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Loop File</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.sound.loopFileLabel}</label>
                             <input name="loopFile" type="file" accept="audio/*" className={fileClassName} />
                           </div>
                           <div>
-                            <label className="mb-2 block text-sm font-medium text-slate-700">Preview File</label>
+                            <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.sound.previewFileLabel}</label>
                             <input name="previewFile" type="file" accept="audio/*" className={fileClassName} />
                           </div>
                         </div>
 
                         <div className="mt-5">
-                          <label className="mb-2 block text-sm font-medium text-slate-700">Fallback Loop File</label>
+                          <label className="mb-2 block text-sm font-medium text-slate-700">{copy.admin.views.sound.fallbackLoopFileLabel}</label>
                           <input name="fallbackLoopFile" type="file" accept="audio/*" className={fileClassName} />
                         </div>
                       </div>
 
                       <div className="border-t border-slate-200 bg-slate-50 px-6 py-6 xl:border-l xl:border-t-0">
-                        <p className="text-sm font-semibold text-slate-900">업로드 메모</p>
+                        <p className="text-sm font-semibold text-slate-900">{copy.admin.views.sound.notesTitle}</p>
                         <ul className="mt-4 space-y-3 text-sm leading-6 text-slate-500">
-                          <li>최초 생성 시 `loopFile`은 필수입니다.</li>
-                          <li>`preview`, `fallback`은 선택값이며 기존 메타데이터를 유지할 수 있습니다.</li>
-                          <li>`defaultVolume`, `durationSec`는 manifest 응답에 함께 반영됩니다.</li>
+                          {copy.admin.views.sound.notes.map((note) => (
+                            <li key={note}>{note}</li>
+                          ))}
                         </ul>
 
                         {currentMessage ? (
@@ -662,7 +628,7 @@ export default function AdminPage() {
                           className="mt-6 h-12 w-full rounded-xl bg-slate-900 hover:bg-slate-800"
                           disabled={soundPending}
                         >
-                          {soundPending ? '오디오 업로드 중...' : '오디오 등록'}
+                          {soundPending ? copy.admin.views.sound.pending : copy.admin.views.sound.submit}
                         </Button>
                       </div>
                     </div>
@@ -673,21 +639,21 @@ export default function AdminPage() {
               <aside className="space-y-6">
                 <div className="rounded-2xl border border-slate-200 bg-white">
                   <div className="border-b border-slate-200 px-5 py-4">
-                    <p className="text-sm font-semibold text-slate-950">최근 응답</p>
+                    <p className="text-sm font-semibold text-slate-950">{copy.admin.inspector.recentResponse}</p>
                   </div>
                   <div className="px-5 py-4">
                     <p className="text-sm leading-6 text-slate-500">
                       {formatResultSummary(uploadResult)}
                     </p>
                     <pre className="mt-4 max-h-[340px] overflow-auto rounded-xl bg-[#171821] px-4 py-4 text-[11px] leading-6 text-slate-100">
-                      {uploadResult ? JSON.stringify(uploadResult, null, 2) : '업로드 응답이 아직 없습니다.'}
+                      {uploadResult ? JSON.stringify(uploadResult, null, 2) : copy.admin.inspector.noUploadPayload}
                     </pre>
                   </div>
                 </div>
 
                 <div className="rounded-2xl border border-slate-200 bg-white">
                   <div className="border-b border-slate-200 px-5 py-4">
-                    <p className="text-sm font-semibold text-slate-950">세션 토큰</p>
+                    <p className="text-sm font-semibold text-slate-950">{copy.admin.inspector.sessionToken}</p>
                   </div>
                   <div className="px-5 py-4">
                     <p className="break-all text-xs leading-6 text-slate-500">
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index 7b90825..85a72a7 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -1,6 +1,7 @@
 import type { Metadata } from 'next';
 import { Noto_Sans_KR } from 'next/font/google';
 import './globals.css';
+import { copy } from '@/shared/i18n';
 import { Providers } from './providers';
 
 // 1. Noto Sans KR 폰트 설정 (라틴어, 프랑스어, 한국어 등 다국어 지원 베이스)
@@ -12,8 +13,8 @@ const notoSans = Noto_Sans_KR({
 });
 
 export const metadata: Metadata = {
-  title: 'VibeRoom - 당신만의 편안한 몰입 공간',
-  description: '프리랜서와 온전한 집중이 필요한 분들을 위한 따뜻하고 구조화된 온라인 코워킹 스페이스. 작업 타이머, 세션 관리, 그리고 느슨한 연대를 통해 당신의 리듬을 찾아보세요.',
+  title: copy.metadata.title,
+  description: copy.metadata.description,
 };
 
 export default function RootLayout({
diff --git a/src/entities/media/api/mediaManifestApi.ts b/src/entities/media/api/mediaManifestApi.ts
index 83d0bd7..235f6cf 100644
--- a/src/entities/media/api/mediaManifestApi.ts
+++ b/src/entities/media/api/mediaManifestApi.ts
@@ -1,6 +1,7 @@
 import { DEFAULT_MEDIA_MANIFEST } from '../model/mockMediaManifest';
 import { normalizeMediaManifest } from '../model/resolveMediaAsset';
 import type { MediaManifest } from '../model/types';
+import { copy } from '@/shared/i18n';
 
 const MEDIA_MANIFEST_URL = process.env.NEXT_PUBLIC_MEDIA_MANIFEST_URL;
 
@@ -17,7 +18,7 @@ export const mediaManifestApi = {
     });
 
     if (!response.ok) {
-      throw new Error('미디어 manifest를 불러오지 못했어요.');
+      throw new Error(copy.media.manifestLoadFailed);
     }
 
     const payload = (await response.json()) as Partial<MediaManifest>;
diff --git a/src/entities/plan/model/mockPlan.ts b/src/entities/plan/model/mockPlan.ts
index e5c1f43..e84d93c 100644
--- a/src/entities/plan/model/mockPlan.ts
+++ b/src/entities/plan/model/mockPlan.ts
@@ -1,23 +1,8 @@
 import type { ProFeatureCard } from './types';
+import { copy } from '@/shared/i18n';
 
 export const PRO_LOCKED_ROOM_IDS: string[] = [];
 export const PRO_LOCKED_TIMER_LABELS: string[] = [];
 export const PRO_LOCKED_SOUND_IDS: string[] = [];
 
-export const PRO_FEATURE_CARDS: ProFeatureCard[] = [
-  {
-    id: 'scene-packs',
-    name: 'Scene Packs',
-    description: '프리미엄 공간 묶음과 장면 변주',
-  },
-  {
-    id: 'sound-packs',
-    name: 'Sound Packs',
-    description: '확장 사운드 프리셋 묶음',
-  },
-  {
-    id: 'profiles',
-    name: 'Profiles',
-    description: '내 기본 세팅 저장/불러오기',
-  },
-];
+export const PRO_FEATURE_CARDS: ProFeatureCard[] = [...copy.plan.proFeatureCards];
diff --git a/src/entities/scene/model/scenes.ts b/src/entities/scene/model/scenes.ts
index 521537a..11401cc 100644
--- a/src/entities/scene/model/scenes.ts
+++ b/src/entities/scene/model/scenes.ts
@@ -1,4 +1,5 @@
 import type { CSSProperties } from 'react';
+import { copy } from '@/shared/i18n';
 import type { SceneTheme } from './types';
 
 const HUB_CURATION_ORDER = [
@@ -14,14 +15,14 @@ const HUB_RECOMMENDED_SCENE_COUNT = 3;
 export const SCENE_THEMES: SceneTheme[] = [
   {
     id: 'rain-window',
-    name: '비 오는 창가',
-    description: '빗소리 위로 스탠드 조명이 부드럽게 번집니다.',
-    tags: ['저자극', '감성'],
-    recommendedSound: 'Rain Focus',
+    name: copy.scenes[0].name,
+    description: copy.scenes[0].description,
+    tags: [...copy.scenes[0].tags],
+    recommendedSound: copy.scenes[0].recommendedSound,
     recommendedSoundPresetId: 'rain-focus',
     recommendedTimerPresetId: '25-5',
-    recommendedTime: '밤',
-    vibeLabel: '잔잔함',
+    recommendedTime: copy.scenes[0].recommendedTime,
+    vibeLabel: copy.scenes[0].vibeLabel,
     hubColor: '#D6E6F7',
     cardPhotoUrl:
       'https://images.pexels.com/photos/16763533/pexels-photo-16763533.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -36,14 +37,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'dawn-cafe',
-    name: '새벽 카페',
-    description: '첫 커피 향처럼 잔잔하고 따뜻한 좌석.',
-    tags: ['감성', '딥워크'],
-    recommendedSound: 'Cafe Murmur',
+    name: copy.scenes[1].name,
+    description: copy.scenes[1].description,
+    tags: [...copy.scenes[1].tags],
+    recommendedSound: copy.scenes[1].recommendedSound,
     recommendedSoundPresetId: 'cafe-work',
     recommendedTimerPresetId: '25-5',
-    recommendedTime: '새벽',
-    vibeLabel: '포근함',
+    recommendedTime: copy.scenes[1].recommendedTime,
+    vibeLabel: copy.scenes[1].vibeLabel,
     hubColor: '#F5DDCB',
     cardPhotoUrl:
       'https://images.pexels.com/photos/18340237/pexels-photo-18340237.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -58,14 +59,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'quiet-library',
-    name: '도서관',
-    description: '넘기는 종이 소리만 들리는 정돈된 책상.',
-    tags: ['저자극', '딥워크'],
-    recommendedSound: 'Deep White',
+    name: copy.scenes[2].name,
+    description: copy.scenes[2].description,
+    tags: [...copy.scenes[2].tags],
+    recommendedSound: copy.scenes[2].recommendedSound,
     recommendedSoundPresetId: 'deep-white',
     recommendedTimerPresetId: '50-10',
-    recommendedTime: '오후',
-    vibeLabel: '몰입',
+    recommendedTime: copy.scenes[2].recommendedTime,
+    vibeLabel: copy.scenes[2].vibeLabel,
     hubColor: '#DCE4D1',
     cardPhotoUrl:
       'https://images.pexels.com/photos/31390421/pexels-photo-31390421.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -80,14 +81,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'wave-sound',
-    name: '파도 소리',
-    description: '잔잔한 해변 위로 호흡을 고르는 공간.',
-    tags: ['움직임 적음', '감성'],
-    recommendedSound: 'Ocean Breath',
+    name: copy.scenes[3].name,
+    description: copy.scenes[3].description,
+    tags: [...copy.scenes[3].tags],
+    recommendedSound: copy.scenes[3].recommendedSound,
     recommendedSoundPresetId: 'ocean-calm',
     recommendedTimerPresetId: '25-5',
-    recommendedTime: '밤',
-    vibeLabel: '차분함',
+    recommendedTime: copy.scenes[3].recommendedTime,
+    vibeLabel: copy.scenes[3].vibeLabel,
     hubColor: '#CFE9EA',
     cardPhotoUrl:
       'https://images.pexels.com/photos/12715501/pexels-photo-12715501.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -102,14 +103,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'green-forest',
-    name: '숲',
-    description: '바람이 나뭇잎을 스치는 소리로 마음을 낮춥니다.',
-    tags: ['저자극', '움직임 적음'],
-    recommendedSound: 'Forest Hush',
+    name: copy.scenes[4].name,
+    description: copy.scenes[4].description,
+    tags: [...copy.scenes[4].tags],
+    recommendedSound: copy.scenes[4].recommendedSound,
     recommendedSoundPresetId: 'rain-focus',
     recommendedTimerPresetId: '50-10',
-    recommendedTime: '오전',
-    vibeLabel: '맑음',
+    recommendedTime: copy.scenes[4].recommendedTime,
+    vibeLabel: copy.scenes[4].vibeLabel,
     hubColor: '#D1E7C9',
     cardPhotoUrl:
       'https://images.pexels.com/photos/34503448/pexels-photo-34503448.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -124,14 +125,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'fireplace',
-    name: '벽난로',
-    description: '작은 불꽃이 주는 리듬으로 집중을 붙잡습니다.',
-    tags: ['감성', '저자극'],
-    recommendedSound: 'Fireplace',
+    name: copy.scenes[5].name,
+    description: copy.scenes[5].description,
+    tags: [...copy.scenes[5].tags],
+    recommendedSound: copy.scenes[5].recommendedSound,
     recommendedSoundPresetId: 'fireplace',
     recommendedTimerPresetId: '25-5',
-    recommendedTime: '밤',
-    vibeLabel: '온기',
+    recommendedTime: copy.scenes[5].recommendedTime,
+    vibeLabel: copy.scenes[5].vibeLabel,
     hubColor: '#F2D4C0',
     cardPhotoUrl:
       'https://images.pexels.com/photos/14353716/pexels-photo-14353716.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -146,14 +147,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'city-night',
-    name: '도시 야경',
-    description: '유리창 너머 야경이 멀리 흐르는 고요한 밤.',
-    tags: ['딥워크', '감성'],
-    recommendedSound: 'Night Lo-fi',
+    name: copy.scenes[6].name,
+    description: copy.scenes[6].description,
+    tags: [...copy.scenes[6].tags],
+    recommendedSound: copy.scenes[6].recommendedSound,
     recommendedSoundPresetId: 'deep-white',
     recommendedTimerPresetId: '50-10',
-    recommendedTime: '심야',
-    vibeLabel: '고요함',
+    recommendedTime: copy.scenes[6].recommendedTime,
+    vibeLabel: copy.scenes[6].vibeLabel,
     hubColor: '#D9D3ED',
     cardPhotoUrl:
       'https://images.pexels.com/photos/17663181/pexels-photo-17663181.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -168,14 +169,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'snow-mountain',
-    name: '설산',
-    description: '차분한 공기와 선명한 수평선이 머리를 맑게 합니다.',
-    tags: ['움직임 적음', '딥워크'],
-    recommendedSound: 'Cold Wind',
+    name: copy.scenes[7].name,
+    description: copy.scenes[7].description,
+    tags: [...copy.scenes[7].tags],
+    recommendedSound: copy.scenes[7].recommendedSound,
     recommendedSoundPresetId: 'deep-white',
     recommendedTimerPresetId: '50-10',
-    recommendedTime: '새벽',
-    vibeLabel: '선명함',
+    recommendedTime: copy.scenes[7].recommendedTime,
+    vibeLabel: copy.scenes[7].vibeLabel,
     hubColor: '#D8E7F3',
     cardPhotoUrl:
       'https://images.pexels.com/photos/34340672/pexels-photo-34340672.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -190,14 +191,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'sun-window',
-    name: '창가',
-    description: '햇살이 들어오는 간결한 책상, 부담 없는 시작.',
-    tags: ['저자극', '딥워크'],
-    recommendedSound: 'Soft Daylight',
+    name: copy.scenes[8].name,
+    description: copy.scenes[8].description,
+    tags: [...copy.scenes[8].tags],
+    recommendedSound: copy.scenes[8].recommendedSound,
     recommendedSoundPresetId: 'silent',
     recommendedTimerPresetId: '25-5',
-    recommendedTime: '오후',
-    vibeLabel: '가벼움',
+    recommendedTime: copy.scenes[8].recommendedTime,
+    vibeLabel: copy.scenes[8].vibeLabel,
     hubColor: '#F6EDC7',
     cardPhotoUrl:
       'https://images.pexels.com/photos/34833126/pexels-photo-34833126.jpeg?auto=compress&cs=tinysrgb&w=1400',
@@ -212,14 +213,14 @@ export const SCENE_THEMES: SceneTheme[] = [
   },
   {
     id: 'outer-space',
-    name: '우주',
-    description: '별빛만 남긴 어둠 속에서 깊게 잠수합니다.',
-    tags: ['딥워크', '감성'],
-    recommendedSound: 'Deep Drone',
+    name: copy.scenes[9].name,
+    description: copy.scenes[9].description,
+    tags: [...copy.scenes[9].tags],
+    recommendedSound: copy.scenes[9].recommendedSound,
     recommendedSoundPresetId: 'deep-white',
     recommendedTimerPresetId: '90-20',
-    recommendedTime: '심야',
-    vibeLabel: '깊음',
+    recommendedTime: copy.scenes[9].recommendedTime,
+    vibeLabel: copy.scenes[9].vibeLabel,
     hubColor: '#D4DCF4',
     cardPhotoUrl:
       'https://images.pexels.com/photos/18537868/pexels-photo-18537868.jpeg?auto=compress&cs=tinysrgb&w=1400',
diff --git a/src/entities/session/model/mockSession.ts b/src/entities/session/model/mockSession.ts
index 7f9a3fa..daf16a5 100644
--- a/src/entities/session/model/mockSession.ts
+++ b/src/entities/session/model/mockSession.ts
@@ -7,90 +7,24 @@ import type {
   SoundPreset,
   TimerPreset,
 } from './types';
+import { copy } from '@/shared/i18n';
 
-export const TODAY_ONE_LINER = '오늘의 한 줄: 완벽보다 시작, 한 조각이면 충분해요.';
+export const TODAY_ONE_LINER = copy.session.todayOneLiner;
 
-export const GOAL_CHIPS: GoalChip[] = [
-  { id: 'mail-3', label: '메일 3개' },
-  { id: 'doc-1p', label: '문서 1p' },
-  { id: 'code-1-function', label: '코딩 1함수' },
-  { id: 'tidy-10m', label: '정리 10분' },
-  { id: 'reading-15m', label: '독서 15분' },
-  { id: 'resume-1paragraph', label: '이력서 1문단' },
-];
+export const GOAL_CHIPS: GoalChip[] = [...copy.session.goalChips];
 
-export const CHECK_IN_PHRASES: CheckInPhrase[] = [
-  { id: 'arrived', text: '지금 들어왔어요' },
-  { id: 'sprint-25', text: '25분만 달릴게요' },
-  { id: 'on-break', text: '휴식 중' },
-  { id: 'back-focus', text: '다시 집중!' },
-  { id: 'slow-day', text: '오늘은 천천히' },
-];
+export const CHECK_IN_PHRASES: CheckInPhrase[] = [...copy.session.checkInPhrases];
 
-export const REACTION_OPTIONS: ReactionOption[] = [
-  { id: 'thumbs-up', emoji: '👍', label: '응원해요' },
-  { id: 'fire', emoji: '🔥', label: '집중 모드' },
-  { id: 'clap', emoji: '👏', label: '잘하고 있어요' },
-  { id: 'heart-hands', emoji: '🫶', label: '연결되어 있어요' },
-];
+export const REACTION_OPTIONS: ReactionOption[] = [...copy.session.reactionOptions];
 
-export const SOUND_PRESETS: SoundPreset[] = [
-  { id: 'deep-white', label: 'Deep White' },
-  { id: 'rain-focus', label: 'Rain Focus' },
-  { id: 'cafe-work', label: 'Cafe Work' },
-  { id: 'ocean-calm', label: 'Ocean Calm' },
-  { id: 'fireplace', label: 'Fireplace' },
-  { id: 'silent', label: 'Silent' },
-];
+export const SOUND_PRESETS: SoundPreset[] = [...copy.session.soundPresets];
 
-export const TIMER_PRESETS: TimerPreset[] = [
-  { id: '25-5', label: '25/5', focusMinutes: 25, breakMinutes: 5 },
-  { id: '50-10', label: '50/10', focusMinutes: 50, breakMinutes: 10 },
-  { id: '90-20', label: '90/20', focusMinutes: 90, breakMinutes: 20 },
-  { id: 'custom', label: '커스텀' },
-];
+export const TIMER_PRESETS: TimerPreset[] = [...copy.session.timerPresets];
 
-export const DISTRACTION_DUMP_PLACEHOLDER = [
-  '디자인 QA 요청 확인',
-  '세금계산서 발행 메모',
-  '오후 미팅 질문 1개 정리',
-];
+export const DISTRACTION_DUMP_PLACEHOLDER = [...copy.session.distractionDumpPlaceholder];
 
-export const TODAY_STATS: FocusStatCard[] = [
-  { id: 'today-focus', label: '오늘 집중 시간', value: '2h 40m', delta: '+35m' },
-  { id: 'today-cycles', label: '완료한 사이클', value: '5회', delta: '+1' },
-  { id: 'today-entry', label: '입장 횟수', value: '3회', delta: '유지' },
-];
+export const TODAY_STATS: FocusStatCard[] = [...copy.session.todayStats];
 
-export const WEEKLY_STATS: FocusStatCard[] = [
-  { id: 'week-focus', label: '최근 7일 집중 시간', value: '14h 20m', delta: '+2h 10m' },
-  { id: 'week-best-day', label: '최고 몰입일', value: '수요일', delta: '3h 30m' },
-  { id: 'week-consistency', label: '연속 달성', value: '4일', delta: '+1일' },
-];
+export const WEEKLY_STATS: FocusStatCard[] = [...copy.session.weeklyStats];
 
-export const RECENT_THOUGHTS: RecentThought[] = [
-  {
-    id: 'thought-1',
-    text: '내일 미팅 전에 제안서 첫 문단만 다시 다듬기',
-    sceneName: '도서관',
-    capturedAt: '방금 전',
-  },
-  {
-    id: 'thought-2',
-    text: '기획 문서의 핵심 흐름을 한 문장으로 정리해두기',
-    sceneName: '비 오는 창가',
-    capturedAt: '24분 전',
-  },
-  {
-    id: 'thought-3',
-    text: '오후에 확인할 이슈 번호만 메모하고 지금 작업 복귀',
-    sceneName: '숲',
-    capturedAt: '1시간 전',
-  },
-  {
-    id: 'thought-4',
-    text: '리뷰 코멘트는 오늘 17시 이후에 한 번에 처리',
-    sceneName: '벽난로',
-    capturedAt: '어제',
-  },
-];
+export const RECENT_THOUGHTS: RecentThought[] = [...copy.session.recentThoughts];
diff --git a/src/features/admin/api/adminApi.ts b/src/features/admin/api/adminApi.ts
index 6d2fd5a..3f8ffd2 100644
--- a/src/features/admin/api/adminApi.ts
+++ b/src/features/admin/api/adminApi.ts
@@ -1,4 +1,5 @@
 import type { AuthResponse } from '@/features/auth/types';
+import { copy } from '@/shared/i18n';
 
 const API_BASE_URL = process.env.NEXT_PUBLIC_API_BASE_URL || 'http://localhost:8080';
 
@@ -57,14 +58,14 @@ const parseErrorMessage = async (response: Response) => {
   const contentType = response.headers.get('content-type') ?? '';
 
   if (!contentType.includes('application/json')) {
-    return `요청 실패: ${response.status}`;
+    return copy.common.requestFailed(response.status);
   }
 
   try {
     const payload = (await response.json()) as ApiErrorPayload;
-    return payload.message ?? payload.error ?? `요청 실패: ${response.status}`;
+    return payload.message ?? payload.error ?? copy.common.requestFailed(response.status);
   } catch {
-    return `요청 실패: ${response.status}`;
+    return copy.common.requestFailed(response.status);
   }
 };
 
diff --git a/src/features/auth/components/SocialLoginGroup.tsx b/src/features/auth/components/SocialLoginGroup.tsx
index 2b194ca..6113634 100644
--- a/src/features/auth/components/SocialLoginGroup.tsx
+++ b/src/features/auth/components/SocialLoginGroup.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { GoogleOAuthProvider } from "@react-oauth/google";
+import { copy } from '@/shared/i18n';
 import { useSocialLogin } from "../hooks/useSocialLogin";
 
 const GOOGLE_CLIENT_ID = process.env.NEXT_PUBLIC_GOOGLE_CLIENT_ID || "";
@@ -46,7 +47,7 @@ const SocialLoginButtons = () => {
             fill="#EA4335"
           />
         </svg>
-        {isLoading ? "연결 중..." : "Google로 계속하기"}
+        {isLoading ? copy.auth.social.connecting : copy.auth.social.continueWithGoogle}
       </button>
 
       {/* 2. Apple 로그인 (react-apple-signin-auth 연동) */}
diff --git a/src/features/auth/hooks/useSocialLogin.ts b/src/features/auth/hooks/useSocialLogin.ts
index 537e38b..5ac8465 100644
--- a/src/features/auth/hooks/useSocialLogin.ts
+++ b/src/features/auth/hooks/useSocialLogin.ts
@@ -2,6 +2,7 @@ import { useGoogleLogin } from '@react-oauth/google';
 import { useRouter } from 'next/navigation';
 import { useState } from 'react';
 import appleAuthHelpers from 'react-apple-signin-auth';
+import { copy } from '@/shared/i18n';
 import { useAuthStore } from '@/store/useAuthStore';
 import { authApi } from '../api/authApi';
 
@@ -58,7 +59,7 @@ export const useSocialLogin = () => {
       router.push('/app');
     } catch (err) {
       console.error(`[${provider}] 로그인 실패:`, err);
-      setError('로그인에 실패했습니다. 다시 시도해 주세요.');
+      setError(copy.auth.errors.loginFailed);
     } finally {
       setIsLoading(false);
     }
@@ -73,7 +74,7 @@ export const useSocialLogin = () => {
       handleSocialLogin('google', tokenResponse.access_token);
     },
     onError: () => {
-      setError('구글 로그인에 실패했습니다. 팝업 차단 여부를 확인해 주세요.');
+      setError(copy.auth.errors.googleFailed);
     },
   });
 
@@ -99,12 +100,12 @@ export const useSocialLogin = () => {
         },
         onError: (err: AppleSignInError) => {
           console.error('Apple SignIn error:', err);
-          setError('애플 로그인 중 오류가 발생했습니다.');
+          setError(copy.auth.errors.appleFailed);
         },
       });
     } catch (err) {
       console.error(err);
-      setError('애플 로그인 초기화 실패');
+      setError(copy.auth.errors.appleInitFailed);
     }
   };
 
@@ -116,7 +117,7 @@ export const useSocialLogin = () => {
     if (response?.accessToken) {
       handleSocialLogin('facebook', response.accessToken);
     } else {
-      setError('페이스북 로그인에 실패했습니다.');
+      setError(copy.auth.errors.facebookFailed);
     }
   };
 
diff --git a/src/features/exit-hold/ui/ExitHoldButton.tsx b/src/features/exit-hold/ui/ExitHoldButton.tsx
index 3e99726..97f3545 100644
--- a/src/features/exit-hold/ui/ExitHoldButton.tsx
+++ b/src/features/exit-hold/ui/ExitHoldButton.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import type { KeyboardEvent } from 'react';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import { useHoldToConfirm } from '../model/useHoldToConfirm';
 
@@ -39,7 +40,7 @@ export const ExitHoldButton = ({
     return (
       <button
         type="button"
-        aria-label="길게 눌러 나가기"
+        aria-label={copy.space.exitHold.holdToExitAriaLabel}
         onMouseDown={start}
         onMouseUp={cancel}
         onMouseLeave={cancel}
@@ -90,7 +91,7 @@ export const ExitHoldButton = ({
   return (
     <button
       type="button"
-      aria-label="길게 눌러 나가기"
+      aria-label={copy.space.exitHold.holdToExitAriaLabel}
       onMouseDown={start}
       onMouseUp={cancel}
       onMouseLeave={cancel}
@@ -117,7 +118,7 @@ export const ExitHoldButton = ({
       ) : null}
       <span className="relative z-10 inline-flex items-center gap-1">
         <span aria-hidden>⤫</span>
-        <span>나가기</span>
+        <span>{copy.space.exitHold.exit}</span>
       </span>
     </button>
   );
diff --git a/src/features/focus-session/model/useFocusSessionEngine.ts b/src/features/focus-session/model/useFocusSessionEngine.ts
index c803101..317c432 100644
--- a/src/features/focus-session/model/useFocusSessionEngine.ts
+++ b/src/features/focus-session/model/useFocusSessionEngine.ts
@@ -1,6 +1,7 @@
 'use client';
 
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { copy } from '@/shared/i18n';
 import {
   focusSessionApi,
   type CompleteFocusSessionRequest,
@@ -96,7 +97,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
       return applySession(session);
     } catch (nextError) {
       const message =
-        nextError instanceof Error ? nextError.message : '세션 엔진과 동기화하지 못했어요.';
+        nextError instanceof Error ? nextError.message : copy.focusSession.syncFailed;
       setError(message);
       return null;
     } finally {
@@ -188,7 +189,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
     startSession: async (payload) => {
       const session = await runMutation(
         () => focusSessionApi.startSession(payload),
-        '세션을 시작하지 못했어요.',
+        copy.focusSession.startFailed,
       );
 
       return applySession(session);
@@ -200,7 +201,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
 
       const session = await runMutation(
         () => focusSessionApi.pauseSession(),
-        '세션을 일시정지하지 못했어요.',
+        copy.focusSession.pauseFailed,
       );
 
       return applySession(session);
@@ -212,7 +213,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
 
       const session = await runMutation(
         () => focusSessionApi.resumeSession(),
-        '세션을 다시 시작하지 못했어요.',
+        copy.focusSession.resumeFailed,
       );
 
       return applySession(session);
@@ -224,7 +225,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
 
       const session = await runMutation(
         () => focusSessionApi.restartCurrentPhase(),
-        '현재 페이즈를 다시 시작하지 못했어요.',
+        copy.focusSession.restartPhaseFailed,
       );
 
       return applySession(session);
@@ -236,7 +237,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
 
       const session = await runMutation(
         () => focusSessionApi.completeSession(payload),
-        '세션을 완료 처리하지 못했어요.',
+        copy.focusSession.completeFailed,
       );
 
       if (session) {
@@ -252,7 +253,7 @@ export const useFocusSessionEngine = (): UseFocusSessionEngineResult => {
 
       const result = await runMutation(
         () => focusSessionApi.abandonSession(),
-        '세션을 종료하지 못했어요.',
+        copy.focusSession.abandonFailed,
       );
 
       if (result === null) {
diff --git a/src/features/inbox/ui/InboxList.tsx b/src/features/inbox/ui/InboxList.tsx
index 789acd0..071024f 100644
--- a/src/features/inbox/ui/InboxList.tsx
+++ b/src/features/inbox/ui/InboxList.tsx
@@ -1,4 +1,5 @@
 import type { RecentThought } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 
 interface InboxListProps {
@@ -17,7 +18,7 @@ export const InboxList = ({ thoughts, onCompleteThought, onDeleteThought, classN
           className,
         )}
       >
-        지금은 비어 있어요. 집중 중 떠오른 생각을 여기로 주차할 수 있어요.
+        {copy.space.inbox.empty}
       </p>
     );
   }
@@ -51,14 +52,14 @@ export const InboxList = ({ thoughts, onCompleteThought, onDeleteThought, classN
                   : 'border-white/20 bg-white/8 text-white/76 hover:bg-white/14',
               )}
             >
-              {thought.isCompleted ? '완료됨' : '완료'}
+              {thought.isCompleted ? copy.space.inbox.completed : copy.space.inbox.complete}
             </button>
             <button
               type="button"
               onClick={() => onDeleteThought(thought)}
               className="inline-flex h-6 items-center rounded-full border border-rose-200/30 bg-rose-200/10 px-2 text-[10px] text-rose-100/88 transition-colors hover:bg-rose-200/18"
             >
-              삭제
+              {copy.space.inbox.delete}
             </button>
           </div>
         </li>
diff --git a/src/features/paywall-sheet/ui/ManagePlanSheetContent.tsx b/src/features/paywall-sheet/ui/ManagePlanSheetContent.tsx
index 25e846a..d03d864 100644
--- a/src/features/paywall-sheet/ui/ManagePlanSheetContent.tsx
+++ b/src/features/paywall-sheet/ui/ManagePlanSheetContent.tsx
@@ -1,3 +1,5 @@
+import { copy } from '@/shared/i18n';
+
 interface ManagePlanSheetContentProps {
   onClose: () => void;
   onManage: () => void;
@@ -12,8 +14,8 @@ export const ManagePlanSheetContent = ({
   return (
     <div className="space-y-4">
       <header className="space-y-1">
-        <h3 className="text-lg font-semibold tracking-tight text-white">PRO 관리</h3>
-        <p className="text-xs text-white/62">결제/복원은 더미 동작이며 실제 연동은 하지 않아요.</p>
+        <h3 className="text-lg font-semibold tracking-tight text-white">{copy.space.paywall.manageTitle}</h3>
+        <p className="text-xs text-white/62">{copy.space.paywall.manageDescription}</p>
       </header>
 
       <div className="space-y-2">
@@ -22,14 +24,14 @@ export const ManagePlanSheetContent = ({
           onClick={onManage}
           className="w-full rounded-xl border border-white/18 bg-white/[0.04] px-3 py-2 text-left text-sm text-white/84 transition-colors hover:bg-white/[0.1]"
         >
-          구독 관리 열기
+          {copy.space.paywall.openSubscription}
         </button>
         <button
           type="button"
           onClick={onRestore}
           className="w-full rounded-xl border border-white/18 bg-white/[0.04] px-3 py-2 text-left text-sm text-white/84 transition-colors hover:bg-white/[0.1]"
         >
-          구매 복원
+          {copy.space.paywall.restorePurchase}
         </button>
       </div>
 
@@ -39,7 +41,7 @@ export const ManagePlanSheetContent = ({
           onClick={onClose}
           className="rounded-full border border-white/18 bg-white/[0.05] px-3 py-1.5 text-xs text-white/74 transition-colors hover:bg-white/[0.11]"
         >
-          닫기
+          {copy.common.close}
         </button>
       </div>
     </div>
diff --git a/src/features/paywall-sheet/ui/PaywallSheetContent.tsx b/src/features/paywall-sheet/ui/PaywallSheetContent.tsx
index a690ac3..044bc93 100644
--- a/src/features/paywall-sheet/ui/PaywallSheetContent.tsx
+++ b/src/features/paywall-sheet/ui/PaywallSheetContent.tsx
@@ -1,22 +1,20 @@
 'use client';
 
+import { copy } from '@/shared/i18n';
+
 interface PaywallSheetContentProps {
   onStartPro: () => void;
   onClose: () => void;
 }
 
-const VALUE_POINTS = [
-  '프리미엄 Scene Packs',
-  '확장 Sound Packs',
-  '프로필 저장 / 불러오기',
-];
+const VALUE_POINTS = copy.space.paywall.points;
 
 export const PaywallSheetContent = ({ onStartPro, onClose }: PaywallSheetContentProps) => {
   return (
     <div className="space-y-4">
       <header className="space-y-1">
-        <h3 className="text-lg font-semibold tracking-tight text-white">PRO에서 더 많은 공간과 사운드를 열어둘 수 있어요.</h3>
-        <p className="text-xs text-white/62">잠금 항목을 누른 순간에만 열리는 더미 결제 시트입니다.</p>
+        <h3 className="text-lg font-semibold tracking-tight text-white">{copy.space.paywall.title}</h3>
+        <p className="text-xs text-white/62">{copy.space.paywall.description}</p>
       </header>
 
       <ul className="space-y-2">
@@ -33,14 +31,14 @@ export const PaywallSheetContent = ({ onStartPro, onClose }: PaywallSheetContent
           onClick={onClose}
           className="rounded-full border border-white/18 bg-white/[0.05] px-3 py-1.5 text-xs text-white/74 transition-colors hover:bg-white/[0.11]"
         >
-          나중에
+          {copy.space.paywall.later}
         </button>
         <button
           type="button"
           onClick={onStartPro}
           className="rounded-full border border-sky-200/44 bg-sky-300/84 px-3.5 py-1.5 text-xs font-semibold text-slate-900 transition-colors hover:bg-sky-300"
         >
-          PRO 시작하기
+          {copy.space.paywall.startPro}
         </button>
       </div>
     </div>
diff --git a/src/features/plan-pill/ui/PlanPill.tsx b/src/features/plan-pill/ui/PlanPill.tsx
index 55e23ae..4599f48 100644
--- a/src/features/plan-pill/ui/PlanPill.tsx
+++ b/src/features/plan-pill/ui/PlanPill.tsx
@@ -1,4 +1,5 @@
 import type { PlanTier } from '@/entities/plan';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 
 interface PlanPillProps {
@@ -20,7 +21,7 @@ export const PlanPill = ({ plan, onClick }: PlanPillProps) => {
           : 'border-white/20 bg-white/8 text-white/82 hover:bg-white/14',
       )}
     >
-      {isPro ? 'PRO' : 'Normal'}
+      {isPro ? copy.space.toolsDock.planPro : copy.space.toolsDock.planNormal}
     </button>
   );
 };
diff --git a/src/features/preferences/api/preferencesApi.ts b/src/features/preferences/api/preferencesApi.ts
index ad49751..0c0bd19 100644
--- a/src/features/preferences/api/preferencesApi.ts
+++ b/src/features/preferences/api/preferencesApi.ts
@@ -2,6 +2,7 @@ import {
   DEFAULT_PRESET_OPTIONS,
   NOTIFICATION_INTENSITY_OPTIONS,
 } from '@/shared/config/settingsOptions';
+import { copy } from '@/shared/i18n';
 import { apiClient } from '@/shared/lib/apiClient';
 
 export type NotificationIntensity = (typeof NOTIFICATION_INTENSITY_OPTIONS)[number];
@@ -17,7 +18,7 @@ export type UpdateUserFocusPreferencesRequest = Partial<UserFocusPreferences>;
 
 export const DEFAULT_USER_FOCUS_PREFERENCES: UserFocusPreferences = {
   reduceMotion: false,
-  notificationIntensity: '기본',
+  notificationIntensity: copy.preferences.defaultNotificationIntensity,
   defaultPresetId: DEFAULT_PRESET_OPTIONS[0].id,
 };
 
diff --git a/src/features/preferences/model/useUserFocusPreferences.ts b/src/features/preferences/model/useUserFocusPreferences.ts
index 9acfca8..4790339 100644
--- a/src/features/preferences/model/useUserFocusPreferences.ts
+++ b/src/features/preferences/model/useUserFocusPreferences.ts
@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect, useRef, useState } from 'react';
+import { copy } from '@/shared/i18n';
 import {
   DEFAULT_USER_FOCUS_PREFERENCES,
   preferencesApi,
@@ -57,7 +58,7 @@ export const useUserFocusPreferences = (): UseUserFocusPreferencesResult => {
       setError(null);
     } catch (nextError) {
       const message =
-        nextError instanceof Error ? nextError.message : '설정을 불러오지 못했어요.';
+        nextError instanceof Error ? nextError.message : copy.preferences.loadFailed;
       setPreferences(DEFAULT_USER_FOCUS_PREFERENCES);
       setError(message);
     } finally {
@@ -80,13 +81,13 @@ export const useUserFocusPreferences = (): UseUserFocusPreferencesResult => {
     try {
       const persisted = await preferencesApi.updateFocusPreferences(patch);
       setPreferences(persisted);
-      pushSavedLabel('저장됨');
+      pushSavedLabel(copy.preferences.saved);
     } catch (nextError) {
       const message =
-        nextError instanceof Error ? nextError.message : '설정을 저장하지 못했어요.';
+        nextError instanceof Error ? nextError.message : copy.preferences.saveFailed;
       setPreferences(previous);
       setError(message);
-      pushSavedLabel('저장 실패');
+      pushSavedLabel(copy.preferences.saveFailedLabel);
     } finally {
       setSaving(false);
     }
diff --git a/src/features/restart-30s/model/copy.ts b/src/features/restart-30s/model/copy.ts
index 8f2b761..268566c 100644
--- a/src/features/restart-30s/model/copy.ts
+++ b/src/features/restart-30s/model/copy.ts
@@ -1,4 +1,6 @@
-export const RECOVERY_30S_BUTTON_LABEL = '숨 고르기 30초';
-export const RECOVERY_30S_MODE_LABEL = 'BREATHE';
-export const RECOVERY_30S_TOAST_MESSAGE = '잠깐 숨 고르고, 다시 천천히 시작해요.';
-export const RECOVERY_30S_COMPLETE_MESSAGE = '준비됐어요. 집중으로 돌아가요.';
+import { copy } from '@/shared/i18n';
+
+export const RECOVERY_30S_BUTTON_LABEL = copy.restart30s.button;
+export const RECOVERY_30S_MODE_LABEL = copy.restart30s.mode;
+export const RECOVERY_30S_TOAST_MESSAGE = copy.restart30s.toast;
+export const RECOVERY_30S_COMPLETE_MESSAGE = copy.restart30s.complete;
diff --git a/src/features/scene-select/ui/SceneSelectCarousel.tsx b/src/features/scene-select/ui/SceneSelectCarousel.tsx
index b85e1c3..145061e 100644
--- a/src/features/scene-select/ui/SceneSelectCarousel.tsx
+++ b/src/features/scene-select/ui/SceneSelectCarousel.tsx
@@ -1,5 +1,6 @@
 import type { SceneTheme } from '@/entities/scene';
 import { getSceneCardBackgroundStyle, type SceneAssetMap } from '@/entities/media';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 
 interface SceneSelectCarouselProps {
@@ -33,7 +34,7 @@ export const SceneSelectCarousel = ({
                   : 'border-white/16 hover:border-white/24',
               )}
               style={getSceneCardBackgroundStyle(scene, sceneAssetMap?.[scene.id])}
-              aria-label={`${scene.name} 선택`}
+              aria-label={`${scene.name} ${copy.common.select}`}
             >
               <span className="absolute inset-x-0 bottom-0 h-[56%] bg-[linear-gradient(180deg,rgba(2,6,23,0)_0%,rgba(2,6,23,0.2)_52%,rgba(2,6,23,0.24)_100%)]" />
               {selected ? (
diff --git a/src/features/session-goal/ui/SessionGoalField.tsx b/src/features/session-goal/ui/SessionGoalField.tsx
index 7ce85cb..1d81747 100644
--- a/src/features/session-goal/ui/SessionGoalField.tsx
+++ b/src/features/session-goal/ui/SessionGoalField.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect, useRef } from 'react';
+import { copy } from '@/shared/i18n';
 import type { GoalChip } from '@/entities/session';
 import { cn } from '@/shared/lib/cn';
 
@@ -21,6 +22,7 @@ export const SessionGoalField = ({
   onGoalChange,
   onGoalChipSelect,
 }: SessionGoalFieldProps) => {
+  const { sessionGoal } = copy.space;
   const inputRef = useRef<HTMLInputElement | null>(null);
 
   useEffect(() => {
@@ -41,7 +43,7 @@ export const SessionGoalField = ({
     <div className="space-y-2">
       <div className="space-y-1">
         <label htmlFor="space-goal-input" className="text-[12px] font-medium text-white/88">
-          이번 25분, 딱 한 가지 <span className="text-sky-100">(필수)</span>
+          {sessionGoal.label} <span className="text-sky-100">{sessionGoal.required}</span>
         </label>
         <input
           ref={inputRef}
@@ -49,10 +51,10 @@ export const SessionGoalField = ({
           autoFocus={autoFocus}
           value={goalInput}
           onChange={(event) => onGoalChange(event.target.value)}
-          placeholder="예: 계약서 1페이지 정리"
+          placeholder={sessionGoal.placeholder}
           className="h-10 w-full rounded-xl border border-white/14 bg-slate-950/42 px-3 text-sm text-white placeholder:text-white/42 focus:border-sky-200/46 focus:outline-none"
         />
-        <p className="text-[11px] text-white/54">크게 말고, 바로 다음 한 조각.</p>
+        <p className="text-[11px] text-white/54">{sessionGoal.hint}</p>
       </div>
 
       <div className="flex flex-wrap gap-1.5">
diff --git a/src/features/sound-preset/model/useSoundPlayback.ts b/src/features/sound-preset/model/useSoundPlayback.ts
index 5515698..3c352b6 100644
--- a/src/features/sound-preset/model/useSoundPlayback.ts
+++ b/src/features/sound-preset/model/useSoundPlayback.ts
@@ -2,6 +2,7 @@
 
 import { useEffect, useMemo, useRef, useState } from 'react';
 import type { SoundAssetManifestItem } from '@/entities/media';
+import { copy } from '@/shared/i18n';
 
 interface UseSoundPlaybackOptions {
   selectedPresetId: string;
@@ -66,7 +67,7 @@ export const useSoundPlayback = ({
     const handleError = () => {
       setReady(false);
       setPlaying(false);
-      setError('사운드 파일을 불러오지 못했어요.');
+      setError(copy.soundPlayback.loadFailed);
     };
 
     audio.addEventListener('loadstart', handleLoadStart);
@@ -146,7 +147,7 @@ export const useSoundPlayback = ({
       } catch {
         if (!cancelled) {
           setPlaying(false);
-          setError('브라우저가 사운드 재생을 보류했어요.');
+          setError(copy.soundPlayback.browserDeferred);
         }
       }
     };
diff --git a/src/features/sound-preset/ui/SoundPresetControls.tsx b/src/features/sound-preset/ui/SoundPresetControls.tsx
index e2a137b..d56cec3 100644
--- a/src/features/sound-preset/ui/SoundPresetControls.tsx
+++ b/src/features/sound-preset/ui/SoundPresetControls.tsx
@@ -1,4 +1,5 @@
 import { SOUND_PRESETS } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { Toggle } from '@/shared/ui';
 import type { SoundTrackKey } from '../model/useSoundPresetSelection';
 
@@ -16,13 +17,7 @@ interface SoundPresetControlsProps {
   onTrackLevelChange: (track: SoundTrackKey, level: number) => void;
 }
 
-const TRACK_LABELS: Record<SoundTrackKey, string> = {
-  white: 'White',
-  rain: 'Rain',
-  cafe: 'Cafe',
-  wave: 'Wave',
-  fan: 'Fan',
-};
+const TRACK_LABELS: Record<SoundTrackKey, string> = copy.space.soundPresetControls.trackLabels;
 
 const clampSliderValue = (value: number) => Math.max(0, Math.min(100, value));
 
@@ -39,10 +34,11 @@ export const SoundPresetControls = ({
   trackLevels,
   onTrackLevelChange,
 }: SoundPresetControlsProps) => {
+  const { soundPresetControls } = copy.space;
   return (
     <div className="space-y-4">
       <div className="space-y-2">
-        <p className="text-xs uppercase tracking-[0.11em] text-white/58">Preset</p>
+        <p className="text-xs uppercase tracking-[0.11em] text-white/58">{soundPresetControls.preset}</p>
         <div className="grid grid-cols-2 gap-2">
           {SOUND_PRESETS.map((preset) => (
             <button
@@ -66,16 +62,16 @@ export const SoundPresetControls = ({
         onClick={onToggleMixer}
         className="inline-flex items-center gap-2 text-xs text-white/70 transition hover:text-white"
       >
-        <span>{isMixerOpen ? 'Mixer 접기' : 'Mixer 펼치기'}</span>
+        <span>{isMixerOpen ? soundPresetControls.mixerClose : soundPresetControls.mixerOpen}</span>
         <span className="inline-flex items-center rounded-full bg-white/10 px-2 py-0.5 text-[10px] font-medium text-white/86 ring-1 ring-white/20">
-          더미
+          {soundPresetControls.mock}
         </span>
       </button>
 
       {isMixerOpen ? (
         <div className="space-y-3 rounded-xl border border-white/14 bg-white/6 p-3">
           <div className="flex items-center justify-between">
-            <span className="text-xs text-white/78">마스터 볼륨</span>
+            <span className="text-xs text-white/78">{soundPresetControls.masterVolume}</span>
             <span className="text-[11px] text-white/58">{masterVolume}%</span>
           </div>
           <input
@@ -90,11 +86,11 @@ export const SoundPresetControls = ({
           />
 
           <div className="flex items-center justify-between border-t border-white/12 pt-2">
-            <p className="text-xs text-white/78">뮤트</p>
+            <p className="text-xs text-white/78">{soundPresetControls.mute}</p>
             <Toggle
               checked={isMuted}
               onChange={onMuteChange}
-              ariaLabel="마스터 뮤트 토글"
+              ariaLabel={soundPresetControls.muteToggleAriaLabel}
             />
           </div>
 
diff --git a/src/features/stats/model/useFocusStats.ts b/src/features/stats/model/useFocusStats.ts
index 8bc70be..fa0d7a9 100644
--- a/src/features/stats/model/useFocusStats.ts
+++ b/src/features/stats/model/useFocusStats.ts
@@ -2,6 +2,7 @@
 
 import { useEffect, useState } from 'react';
 import { TODAY_STATS, WEEKLY_STATS } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { statsApi, type FocusStatsSummary } from '../api/statsApi';
 
 type StatsSource = 'api' | 'mock';
@@ -55,7 +56,7 @@ export const useFocusStats = (): UseFocusStatsResult => {
       setError(null);
     } catch (nextError) {
       const message =
-        nextError instanceof Error ? nextError.message : '통계를 불러오지 못했어요.';
+        nextError instanceof Error ? nextError.message : copy.stats.loadFailed;
       setSummary(buildMockSummary());
       setSource('mock');
       setError(message);
diff --git a/src/shared/config/settingsOptions.ts b/src/shared/config/settingsOptions.ts
index cdd68cf..30d5e0e 100644
--- a/src/shared/config/settingsOptions.ts
+++ b/src/shared/config/settingsOptions.ts
@@ -1,7 +1,5 @@
-export const NOTIFICATION_INTENSITY_OPTIONS = ['조용함', '기본', '강함'] as const;
+import { copy } from '@/shared/i18n';
 
-export const DEFAULT_PRESET_OPTIONS = [
-  { id: 'balanced', label: 'Balanced 25/5 + Rain Focus' },
-  { id: 'deep-work', label: 'Deep Work 50/10 + Deep White' },
-  { id: 'gentle', label: 'Gentle 25/5 + Silent' },
-] as const;
+export const NOTIFICATION_INTENSITY_OPTIONS = copy.settings.notificationIntensityOptions;
+
+export const DEFAULT_PRESET_OPTIONS = copy.settings.defaultPresetOptions;
diff --git a/src/shared/lib/apiClient.ts b/src/shared/lib/apiClient.ts
index 3d5ecdb..5540163 100644
--- a/src/shared/lib/apiClient.ts
+++ b/src/shared/lib/apiClient.ts
@@ -7,6 +7,7 @@
  */
 
 import Cookies from 'js-cookie';
+import { copy } from '@/shared/i18n';
 import { useAuthStore } from '@/store/useAuthStore';
 
 const API_BASE_URL = process.env.NEXT_PUBLIC_API_BASE_URL || 'http://localhost:8080';
@@ -56,14 +57,14 @@ const readErrorMessage = async (response: Response) => {
   const contentType = response.headers.get('content-type') ?? '';
 
   if (!contentType.includes('application/json')) {
-    return `API 요청 실패: ${response.status}`;
+    return copy.common.apiRequestFailed(response.status);
   }
 
   try {
     const payload = (await response.json()) as ApiErrorPayload;
-    return payload.message ?? payload.error ?? `API 요청 실패: ${response.status}`;
+    return payload.message ?? payload.error ?? copy.common.apiRequestFailed(response.status);
   } catch {
-    return `API 요청 실패: ${response.status}`;
+    return copy.common.apiRequestFailed(response.status);
   }
 };
 
diff --git a/src/shared/ui/Modal.tsx b/src/shared/ui/Modal.tsx
index b5ad261..ce0e26f 100644
--- a/src/shared/ui/Modal.tsx
+++ b/src/shared/ui/Modal.tsx
@@ -2,6 +2,7 @@
 
 import type { ReactNode } from 'react';
 import { useEffect } from 'react';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import { useReducedMotion } from '@/shared/lib/useReducedMotion';
 
@@ -50,7 +51,7 @@ export const Modal = ({
     <div className="fixed inset-0 z-50 flex items-end justify-center p-4 sm:items-center">
       <button
         type="button"
-        aria-label="모달 닫기"
+        aria-label={copy.modal.closeAriaLabel}
         onClick={onClose}
         className="absolute inset-0 bg-slate-900/52 backdrop-blur-[2px]"
       />
@@ -81,7 +82,7 @@ export const Modal = ({
               onClick={onClose}
               className="rounded-lg border border-brand-dark/16 bg-white/58 px-2.5 py-1.5 text-xs text-brand-dark/82 transition hover:bg-white/84 hover:text-brand-dark"
             >
-              닫기
+              {copy.modal.closeButton}
             </button>
           </div>
         </header>
diff --git a/src/widgets/control-center-sheet/ui/ControlCenterSheetWidget.tsx b/src/widgets/control-center-sheet/ui/ControlCenterSheetWidget.tsx
index f1cdcc6..b1e1dc1 100644
--- a/src/widgets/control-center-sheet/ui/ControlCenterSheetWidget.tsx
+++ b/src/widgets/control-center-sheet/ui/ControlCenterSheetWidget.tsx
@@ -8,6 +8,7 @@ import {
 import type { SceneTheme } from '@/entities/scene';
 import { getSceneCardBackgroundStyle, type SceneAssetMap } from '@/entities/media';
 import { SOUND_PRESETS, type TimerPreset } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import { useReducedMotion } from '@/shared/lib/useReducedMotion';
 import { Toggle } from '@/shared/ui';
@@ -58,6 +59,7 @@ export const ControlCenterSheetWidget = ({
   onSelectProFeature,
   onLockedClick,
 }: ControlCenterSheetWidgetProps) => {
+  const { controlCenter } = copy.space;
   const reducedMotion = useReducedMotion();
   const isPro = plan === 'pro';
   const interactiveMotionClass = reducedMotion
@@ -74,7 +76,7 @@ export const ControlCenterSheetWidget = ({
   return (
     <div className="space-y-4">
       <section className="space-y-2.5 rounded-2xl border border-white/12 bg-black/22 p-3.5 backdrop-blur-md">
-        <SectionTitle title="Background" description={selectedScene?.name ?? '기본 배경'} />
+        <SectionTitle title={controlCenter.sectionTitles.background} description={selectedScene?.name ?? copy.common.defaultBackground} />
         <div
           className={cn(
             '-mx-1 flex gap-2.5 overflow-x-auto px-1 pb-1.5 snap-x snap-mandatory scrollbar-none',
@@ -116,7 +118,7 @@ export const ControlCenterSheetWidget = ({
       </section>
 
       <section className="space-y-2.5 rounded-2xl border border-white/12 bg-black/22 p-3.5 backdrop-blur-md">
-        <SectionTitle title="Time" description={selectedTimerLabel} />
+        <SectionTitle title={controlCenter.sectionTitles.time} description={selectedTimerLabel} />
         <div className="grid grid-cols-3 gap-2">
           {timerPresets.slice(0, 3).map((preset) => {
             const selected = preset.label === selectedTimerLabel;
@@ -145,8 +147,8 @@ export const ControlCenterSheetWidget = ({
 
       <section className="space-y-2.5 rounded-2xl border border-white/12 bg-black/22 p-3.5 backdrop-blur-md">
         <SectionTitle
-          title="Sound"
-          description={SOUND_PRESETS.find((preset) => preset.id === selectedSoundPresetId)?.label ?? '기본'}
+          title={controlCenter.sectionTitles.sound}
+          description={SOUND_PRESETS.find((preset) => preset.id === selectedSoundPresetId)?.label ?? copy.common.default}
         />
         <div className="grid grid-cols-3 gap-2">
           {SOUND_PRESETS.slice(0, 6).map((preset) => {
@@ -175,12 +177,12 @@ export const ControlCenterSheetWidget = ({
       </section>
 
       <div className="space-y-1.5 rounded-xl border border-white/12 bg-white/[0.03] px-3 py-2.5">
-        <p className="text-[11px] text-white/58">추천: {sceneRecommendedSoundLabel} · {sceneRecommendedTimerLabel}</p>
-        <p className="text-[10px] text-white/48">추천 조합은 참고 정보로만 제공돼요.</p>
+        <p className="text-[11px] text-white/58">{controlCenter.recommendation(sceneRecommendedSoundLabel, sceneRecommendedTimerLabel)}</p>
+        <p className="text-[10px] text-white/48">{controlCenter.recommendationHint}</p>
       </div>
 
       <section className="space-y-2 rounded-2xl border border-white/12 bg-black/18 p-3 backdrop-blur-md">
-        <SectionTitle title="Packs" description="확장/개인화" />
+        <SectionTitle title={controlCenter.sectionTitles.packs} description={controlCenter.packsDescription} />
         <div className="space-y-1.5">
           {PRO_FEATURE_CARDS.map((feature) => {
             const locked = !isPro;
@@ -213,13 +215,13 @@ export const ControlCenterSheetWidget = ({
       <section className="space-y-2 rounded-2xl border border-white/12 bg-black/18 px-3 py-2.5 backdrop-blur-md">
         <div className="flex items-center justify-between gap-3">
           <div className="min-w-0">
-            <p className="text-[11px] text-white/72">컨트롤 자동 숨김</p>
-            <p className="mt-0.5 text-[10px] text-white/52">입력이 없으면 잠시 후 패널을 닫아요.</p>
+            <p className="text-[11px] text-white/72">{controlCenter.autoHideTitle}</p>
+            <p className="mt-0.5 text-[10px] text-white/52">{controlCenter.autoHideDescription}</p>
           </div>
           <Toggle
             checked={autoHideControls}
             onChange={onAutoHideControlsChange}
-            ariaLabel="컨트롤 자동 숨김"
+            ariaLabel={controlCenter.autoHideAriaLabel}
             className="shrink-0"
           />
         </div>
diff --git a/src/widgets/settings-panel/ui/SettingsPanelWidget.tsx b/src/widgets/settings-panel/ui/SettingsPanelWidget.tsx
index 9d5c7f5..b9417b6 100644
--- a/src/widgets/settings-panel/ui/SettingsPanelWidget.tsx
+++ b/src/widgets/settings-panel/ui/SettingsPanelWidget.tsx
@@ -5,10 +5,12 @@ import {
   DEFAULT_PRESET_OPTIONS,
   NOTIFICATION_INTENSITY_OPTIONS,
 } from '@/shared/config/settingsOptions';
+import { copy } from '@/shared/i18n';
 import { useUserFocusPreferences } from '@/features/preferences';
 import { cn } from '@/shared/lib/cn';
 
 export const SettingsPanelWidget = () => {
+  const { settings } = copy;
   const {
     preferences,
     isLoading,
@@ -22,12 +24,12 @@ export const SettingsPanelWidget = () => {
     <div className="min-h-screen bg-[radial-gradient(circle_at_82%_0%,rgba(167,204,237,0.42),transparent_50%),radial-gradient(circle_at_12%_8%,rgba(191,219,254,0.4),transparent_46%),linear-gradient(170deg,#f8fafc_0%,#eef4fb_54%,#e8f1fa_100%)] text-brand-dark">
       <div className="mx-auto w-full max-w-4xl px-4 pb-10 pt-6 sm:px-6">
         <header className="mb-6 flex items-center justify-between rounded-xl border border-brand-dark/12 bg-white/72 px-4 py-3 backdrop-blur-sm">
-          <h1 className="text-xl font-semibold">Settings</h1>
+          <h1 className="text-xl font-semibold">{settings.title}</h1>
           <Link
             href="/app"
             className="rounded-lg border border-brand-dark/16 px-3 py-1.5 text-xs text-brand-dark/82 transition hover:bg-white/90"
           >
-            허브로
+            {copy.common.hub}
           </Link>
         </header>
 
@@ -35,13 +37,13 @@ export const SettingsPanelWidget = () => {
           <section className="rounded-xl border border-brand-dark/12 bg-white/78 p-4 backdrop-blur-sm">
             <div className="flex flex-wrap items-center justify-between gap-2">
               <div>
-                <h2 className="text-base font-semibold text-brand-dark">Focus Preferences API</h2>
+                <h2 className="text-base font-semibold text-brand-dark">{settings.focusPreferencesApi}</h2>
                 <p className="mt-1 text-sm text-brand-dark/64">
                   {isLoading
-                    ? '저장된 설정을 불러오는 중이에요.'
+                    ? settings.loading
                     : isSaving
-                      ? '변경 사항을 저장하는 중이에요.'
-                      : '변경 즉시 서버에 저장합니다.'}
+                      ? settings.saving
+                      : settings.synced}
                 </p>
               </div>
               {saveStateLabel ? (
@@ -56,9 +58,9 @@ export const SettingsPanelWidget = () => {
           <section className="rounded-xl border border-brand-dark/12 bg-white/78 p-4 backdrop-blur-sm">
             <div className="flex items-center justify-between gap-3">
               <div>
-                <h2 className="text-base font-semibold text-brand-dark">Reduce Motion</h2>
+                <h2 className="text-base font-semibold text-brand-dark">{settings.reduceMotionTitle}</h2>
                 <p className="mt-1 text-sm text-brand-dark/64">
-                  전환 애니메이션을 최소화합니다. (UI 토글 목업)
+                  {settings.reduceMotionDescription}
                 </p>
               </div>
               <button
@@ -88,8 +90,8 @@ export const SettingsPanelWidget = () => {
           </section>
 
           <section className="rounded-xl border border-brand-dark/12 bg-white/78 p-4 backdrop-blur-sm">
-            <h2 className="text-base font-semibold text-brand-dark">알림 강도</h2>
-            <p className="mt-1 text-sm text-brand-dark/64">집중 시작/종료 신호의 존재감을 선택합니다.</p>
+            <h2 className="text-base font-semibold text-brand-dark">{settings.notificationIntensityTitle}</h2>
+            <p className="mt-1 text-sm text-brand-dark/64">{settings.notificationIntensityDescription}</p>
             <div className="mt-3 flex flex-wrap gap-2">
               {NOTIFICATION_INTENSITY_OPTIONS.map((option) => (
                 <button
@@ -112,8 +114,8 @@ export const SettingsPanelWidget = () => {
           </section>
 
           <section className="rounded-xl border border-brand-dark/12 bg-white/78 p-4 backdrop-blur-sm">
-            <h2 className="text-base font-semibold text-brand-dark">기본 프리셋</h2>
-            <p className="mt-1 text-sm text-brand-dark/64">입장 시 자동 선택될 추천 세트를 고릅니다.</p>
+            <h2 className="text-base font-semibold text-brand-dark">{settings.defaultPresetTitle}</h2>
+            <p className="mt-1 text-sm text-brand-dark/64">{settings.defaultPresetDescription}</p>
             <div className="mt-3 space-y-2">
               {DEFAULT_PRESET_OPTIONS.map((preset) => (
                 <button
diff --git a/src/widgets/space-focus-hud/ui/GoalCompleteSheet.tsx b/src/widgets/space-focus-hud/ui/GoalCompleteSheet.tsx
index ff5084b..4ad7356 100644
--- a/src/widgets/space-focus-hud/ui/GoalCompleteSheet.tsx
+++ b/src/widgets/space-focus-hud/ui/GoalCompleteSheet.tsx
@@ -2,6 +2,7 @@
 
 import type { FormEvent } from 'react';
 import { useEffect, useMemo, useRef, useState } from 'react';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 
 interface GoalCompleteSheetProps {
@@ -12,12 +13,7 @@ interface GoalCompleteSheetProps {
   onClose: () => void;
 }
 
-const GOAL_SUGGESTIONS = [
-  '리뷰 코멘트 2개 처리',
-  '문서 1문단 다듬기',
-  '이슈 1개 정리',
-  '메일 2개 회신',
-];
+const GOAL_SUGGESTIONS = copy.space.goalComplete.suggestions;
 
 export const GoalCompleteSheet = ({
   open,
@@ -53,10 +49,10 @@ export const GoalCompleteSheet = ({
     const trimmed = currentGoal.trim();
 
     if (!trimmed) {
-      return '다음 한 조각을 적어보세요';
+      return copy.space.goalComplete.placeholderFallback;
     }
 
-    return `예: ${trimmed}`;
+    return copy.space.goalComplete.placeholderExample(trimmed);
   }, [currentGoal]);
 
   const canConfirm = draft.trim().length > 0;
@@ -82,14 +78,14 @@ export const GoalCompleteSheet = ({
       <section className="pointer-events-auto w-[min(460px,94vw)] rounded-2xl border border-white/12 bg-black/26 px-3.5 py-3 text-white shadow-[0_14px_30px_rgba(2,6,23,0.28)] backdrop-blur-md">
         <header className="flex items-start justify-between gap-2">
           <div>
-            <h3 className="text-sm font-semibold text-white/92">좋아요. 다음 한 조각은?</h3>
-            <p className="mt-0.5 text-[11px] text-white/58">너무 크게 잡지 말고, 바로 다음 한 조각만.</p>
+            <h3 className="text-sm font-semibold text-white/92">{copy.space.goalComplete.title}</h3>
+            <p className="mt-0.5 text-[11px] text-white/58">{copy.space.goalComplete.description}</p>
           </div>
           <button
             type="button"
             onClick={onClose}
             className="inline-flex h-6 w-6 items-center justify-center rounded-full border border-white/16 bg-white/[0.05] text-[11px] text-white/72 transition-colors hover:bg-white/[0.12]"
-            aria-label="닫기"
+            aria-label={copy.space.goalComplete.closeAriaLabel}
           >
             ✕
           </button>
@@ -120,17 +116,17 @@ export const GoalCompleteSheet = ({
           <footer className="mt-3 flex items-center justify-end gap-2">
             <button
               type="button"
-              onClick={onRest}
-              className="rounded-full border border-white/18 bg-white/[0.05] px-3 py-1.5 text-xs text-white/74 transition-colors hover:bg-white/[0.11]"
-            >
-              잠깐 쉬기
-            </button>
+            onClick={onRest}
+            className="rounded-full border border-white/18 bg-white/[0.05] px-3 py-1.5 text-xs text-white/74 transition-colors hover:bg-white/[0.11]"
+          >
+            {copy.space.goalComplete.restButton}
+          </button>
             <button
               type="submit"
               disabled={!canConfirm}
               className="rounded-full border border-sky-200/42 bg-sky-300/84 px-3.5 py-1.5 text-xs font-semibold text-slate-900 transition-colors hover:bg-sky-300 disabled:cursor-not-allowed disabled:border-white/16 disabled:bg-white/[0.08] disabled:text-white/48"
             >
-              바로 다음 조각 시작
+              {copy.space.goalComplete.confirmButton}
             </button>
           </footer>
         </form>
diff --git a/src/widgets/space-focus-hud/ui/SpaceFocusHudWidget.tsx b/src/widgets/space-focus-hud/ui/SpaceFocusHudWidget.tsx
index 0e8a0f7..c369b93 100644
--- a/src/widgets/space-focus-hud/ui/SpaceFocusHudWidget.tsx
+++ b/src/widgets/space-focus-hud/ui/SpaceFocusHudWidget.tsx
@@ -1,4 +1,5 @@
 import { useEffect, useRef, useState } from 'react';
+import { copy } from '@/shared/i18n';
 import type { HudStatusLinePayload } from '@/shared/lib/useHudStatusLine';
 import { SpaceTimerHudWidget } from '@/widgets/space-timer-hud';
 import { GoalCompleteSheet } from './GoalCompleteSheet';
@@ -44,7 +45,7 @@ export const SpaceFocusHudWidget = ({
   const visibleRef = useRef(false);
   const playbackStateRef = useRef<'running' | 'paused'>(playbackState);
   const restReminderTimerRef = useRef<number | null>(null);
-  const normalizedGoal = goal.trim().length > 0 ? goal.trim() : '집중을 시작해요.';
+  const normalizedGoal = goal.trim().length > 0 ? goal.trim() : copy.space.focusHud.goalFallback;
 
   useEffect(() => {
     return () => {
@@ -58,7 +59,7 @@ export const SpaceFocusHudWidget = ({
   useEffect(() => {
     if (visible && !visibleRef.current && playbackState === 'running') {
       onStatusMessage({
-        message: `이번 한 조각 · ${normalizedGoal}`,
+        message: copy.space.focusHud.goalToast(normalizedGoal),
       });
     }
 
@@ -68,7 +69,7 @@ export const SpaceFocusHudWidget = ({
   useEffect(() => {
     if (playbackStateRef.current === 'paused' && playbackState === 'running' && visible) {
       onStatusMessage({
-        message: `이번 한 조각 · ${normalizedGoal}`,
+        message: copy.space.focusHud.goalToast(normalizedGoal),
       });
     }
 
@@ -115,7 +116,7 @@ export const SpaceFocusHudWidget = ({
           }
 
           restReminderTimerRef.current = window.setTimeout(() => {
-            onStatusMessage({ message: '5분이 지났어요. 다음 한 조각으로 돌아와요.' });
+            onStatusMessage({ message: copy.space.focusHud.restReminder });
             restReminderTimerRef.current = null;
           }, 5 * 60 * 1000);
         }}
diff --git a/src/widgets/space-setup-drawer/ui/SpaceSetupDrawerWidget.tsx b/src/widgets/space-setup-drawer/ui/SpaceSetupDrawerWidget.tsx
index 3d97cc1..e550484 100644
--- a/src/widgets/space-setup-drawer/ui/SpaceSetupDrawerWidget.tsx
+++ b/src/widgets/space-setup-drawer/ui/SpaceSetupDrawerWidget.tsx
@@ -4,6 +4,7 @@ import { useEffect, useMemo, useRef, useState, type FormEvent } from 'react';
 import type { SceneAssetMap } from '@/entities/media';
 import type { SceneTheme } from '@/entities/scene';
 import type { GoalChip, SoundPreset, TimerPreset } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { SceneSelectCarousel } from '@/features/scene-select';
 import { SessionGoalField } from '@/features/session-goal';
 import { Button } from '@/shared/ui';
@@ -84,6 +85,7 @@ export const SpaceSetupDrawerWidget = ({
   onStart,
   resumeHint,
 }: SpaceSetupDrawerWidgetProps) => {
+  const { setup } = copy.space;
   const [openPopover, setOpenPopover] = useState<RitualPopover | null>(null);
   const panelRef = useRef<HTMLDivElement | null>(null);
 
@@ -95,7 +97,7 @@ export const SpaceSetupDrawerWidget = ({
     return (
       soundPresets.find((preset) => preset.id === selectedSoundPresetId)?.label ??
       soundPresets[0]?.label ??
-      '기본'
+      copy.common.default
     );
   }, [selectedSoundPresetId, soundPresets]);
 
@@ -148,21 +150,21 @@ export const SpaceSetupDrawerWidget = ({
   return (
     <section
       className="fixed left-1/2 top-1/2 z-40 w-[min(428px,92vw)] -translate-x-1/2 -translate-y-1/2"
-      aria-label="집중 시작 패널"
+      aria-label={setup.panelAriaLabel}
     >
       <div
         ref={panelRef}
         className="rounded-3xl border border-white/14 bg-[linear-gradient(160deg,rgba(15,23,42,0.68)_0%,rgba(8,13,27,0.56)_100%)] p-4 text-white shadow-[0_22px_52px_rgba(2,6,23,0.38)] backdrop-blur-2xl sm:p-5"
       >
         <header className="mb-3 space-y-1">
-          <p className="text-[10px] uppercase tracking-[0.18em] text-white/48">Ritual</p>
-          <h1 className="text-[1.45rem] font-semibold leading-tight text-white">이번 한 조각을 정하고 시작해요.</h1>
-          <p className="text-xs text-white/60">목표를 정한 뒤 HUD의 시작 버튼으로 실제 세션을 시작해요.</p>
+          <p className="text-[10px] uppercase tracking-[0.18em] text-white/48">{setup.eyebrow}</p>
+          <h1 className="text-[1.45rem] font-semibold leading-tight text-white">{setup.title}</h1>
+          <p className="text-xs text-white/60">{setup.description}</p>
         </header>
 
         {resumeHint ? (
           <div className="mb-3 rounded-2xl border border-white/14 bg-black/22 px-3 py-2.5">
-            <p className="text-[11px] text-white/62">지난 한 조각 이어서</p>
+            <p className="text-[11px] text-white/62">{setup.resumeTitle}</p>
             <p className="mt-1 truncate text-sm text-white/88">{resumeHint.goal}</p>
             <div className="mt-2 flex items-center justify-end gap-1.5">
               <button
@@ -170,14 +172,14 @@ export const SpaceSetupDrawerWidget = ({
                 onClick={resumeHint.onStartFresh}
                 className="rounded-full border border-white/16 bg-white/[0.04] px-2.5 py-1 text-[11px] text-white/72 transition-colors hover:bg-white/[0.1]"
               >
-                새로 시작
+                {setup.startFresh}
               </button>
               <button
                 type="button"
                 onClick={resumeHint.onResume}
                 className="rounded-full border border-sky-200/34 bg-sky-200/14 px-2.5 py-1 text-[11px] text-white/90 transition-colors hover:bg-sky-200/22"
               >
-                이어서 준비
+                {setup.resumePrepare}
               </button>
             </div>
           </div>
@@ -186,19 +188,19 @@ export const SpaceSetupDrawerWidget = ({
         <div className="relative mb-3">
           <div className="flex flex-wrap gap-1.5">
             <SummaryChip
-              label="배경"
-              value={selectedScene?.name ?? '기본 배경'}
+              label={setup.sceneLabel}
+              value={selectedScene?.name ?? copy.common.defaultBackground}
               open={openPopover === 'space'}
               onClick={() => togglePopover('space')}
             />
             <SummaryChip
-              label="타이머"
+              label={setup.timerLabel}
               value={selectedTimerLabel}
               open={openPopover === 'timer'}
               onClick={() => togglePopover('timer')}
             />
             <SummaryChip
-              label="사운드"
+              label={setup.soundLabel}
               value={selectedSoundLabel}
               open={openPopover === 'sound'}
               onClick={() => togglePopover('sound')}
@@ -289,7 +291,7 @@ export const SpaceSetupDrawerWidget = ({
           />
 
           <div className="space-y-1.5 pt-1">
-            {!canStart ? <p className="text-[10px] text-white/56">목표를 적으면 시작할 수 있어요.</p> : null}
+            {!canStart ? <p className="text-[10px] text-white/56">{setup.readyHint}</p> : null}
             <Button
               type="submit"
               form="space-setup-ritual-form"
@@ -299,7 +301,7 @@ export const SpaceSetupDrawerWidget = ({
                 'h-10 rounded-xl !bg-sky-300/84 !text-slate-900 shadow-[0_8px_16px_rgba(125,211,252,0.24)] hover:!bg-sky-300 disabled:!bg-white/10 disabled:!text-white/42',
               )}
             >
-              집중 화면 열기
+              {setup.openFocusScreen}
             </Button>
           </div>
         </form>
diff --git a/src/widgets/space-sheet-shell/ui/SpaceSideSheet.tsx b/src/widgets/space-sheet-shell/ui/SpaceSideSheet.tsx
index 0cb7e94..3f3890c 100644
--- a/src/widgets/space-sheet-shell/ui/SpaceSideSheet.tsx
+++ b/src/widgets/space-sheet-shell/ui/SpaceSideSheet.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect, useRef, useState, type ReactNode } from 'react';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import { useReducedMotion } from '@/shared/lib/useReducedMotion';
 
@@ -100,7 +101,7 @@ export const SpaceSideSheet = ({
       {dismissible ? (
         <button
           type="button"
-          aria-label="시트 닫기"
+          aria-label={copy.modal.closeAriaLabel}
           onClick={onClose}
           className={cn(
             'fixed inset-0 z-40 bg-slate-950/14 backdrop-blur-[1px] transition-opacity',
@@ -147,7 +148,7 @@ export const SpaceSideSheet = ({
                 <button
                   type="button"
                   onClick={onClose}
-                  aria-label="닫기"
+                  aria-label={copy.modal.closeButton}
                   className="inline-flex h-7 w-7 items-center justify-center rounded-full border border-white/14 bg-white/6 text-[12px] text-white/72 transition-colors hover:bg-white/12 hover:text-white"
                 >
                   ✕
diff --git a/src/widgets/space-timer-hud/ui/SpaceTimerHudWidget.tsx b/src/widgets/space-timer-hud/ui/SpaceTimerHudWidget.tsx
index 2c17c76..09b8965 100644
--- a/src/widgets/space-timer-hud/ui/SpaceTimerHudWidget.tsx
+++ b/src/widgets/space-timer-hud/ui/SpaceTimerHudWidget.tsx
@@ -1,5 +1,6 @@
 'use client';
 
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import {
   RECOVERY_30S_MODE_LABEL,
@@ -26,11 +27,7 @@ interface SpaceTimerHudWidgetProps {
   onGoalCompleteRequest?: () => void;
 }
 
-const HUD_ACTIONS = [
-  { id: 'start', label: '시작', icon: '▶' },
-  { id: 'pause', label: '일시정지', icon: '⏸' },
-  { id: 'reset', label: '리셋', icon: '↺' },
-] as const;
+const HUD_ACTIONS = copy.space.timerHud.actions;
 
 export const SpaceTimerHudWidget = ({
   timerLabel,
@@ -51,14 +48,14 @@ export const SpaceTimerHudWidget = ({
   onGoalCompleteRequest,
 }: SpaceTimerHudWidgetProps) => {
   const { isBreatheMode, triggerRestart } = useRestart30s();
-  const normalizedGoal = goal.trim().length > 0 ? goal.trim() : '이번 한 조각을 설정해 주세요.';
+  const normalizedGoal = goal.trim().length > 0 ? goal.trim() : copy.space.timerHud.goalFallback;
   const modeLabel = isBreatheMode
     ? RECOVERY_30S_MODE_LABEL
     : !hasActiveSession
-      ? 'Ready'
+      ? copy.space.timerHud.readyMode
     : sessionPhase === 'break'
-      ? 'Break'
-      : 'Focus';
+      ? copy.space.timerHud.breakMode
+      : copy.space.timerHud.focusMode;
 
   return (
     <div
@@ -105,7 +102,7 @@ export const SpaceTimerHudWidget = ({
             </div>
             <div className="mt-1.5 flex min-w-0 items-center gap-2">
               <p className={cn('min-w-0 truncate text-sm', isImmersionMode ? 'text-white/88' : 'text-white/86')}>
-                <span className="text-white/62">이번 한 조각 · </span>
+                <span className="text-white/62">{copy.space.timerHud.goalPrefix}</span>
                 <span className="text-white/90">{normalizedGoal}</span>
               </p>
               <button
@@ -113,7 +110,7 @@ export const SpaceTimerHudWidget = ({
                 onClick={onGoalCompleteRequest}
                 className="shrink-0 rounded-full border border-white/16 bg-white/[0.04] px-2 py-0.5 text-[10px] text-white/70 transition-colors hover:bg-white/[0.1] hover:text-white/86"
               >
-                완료
+                {copy.space.timerHud.completeButton}
               </button>
             </div>
           </div>
diff --git a/src/widgets/space-tools-dock/ui/FocusRightRail.tsx b/src/widgets/space-tools-dock/ui/FocusRightRail.tsx
index 1efd4e8..804abc2 100644
--- a/src/widgets/space-tools-dock/ui/FocusRightRail.tsx
+++ b/src/widgets/space-tools-dock/ui/FocusRightRail.tsx
@@ -1,4 +1,5 @@
 import { cn } from '@/shared/lib/cn';
+import { copy } from '@/shared/i18n';
 import { formatThoughtCount, RAIL_ICON } from './constants';
 
 interface FocusRightRailProps {
@@ -25,8 +26,8 @@ export const FocusRightRail = ({
         <div className="flex flex-col gap-1">
           <button
             type="button"
-            aria-label="인박스 열기"
-            title="인박스"
+            aria-label={copy.space.inbox.openInboxAriaLabel}
+            title={copy.space.inbox.openInboxTitle}
             onClick={onOpenInbox}
             className="relative inline-flex h-8 w-8 items-center justify-center rounded-xl border border-white/12 bg-white/[0.03] text-white/82 transition-colors hover:bg-white/10"
           >
@@ -39,8 +40,8 @@ export const FocusRightRail = ({
           </button>
           <button
             type="button"
-            aria-label="Quick Controls 열기"
-            title="Quick Controls"
+            aria-label={copy.space.rightRail.openQuickControlsAriaLabel}
+            title={copy.space.rightRail.openQuickControlsTitle}
             onClick={onOpenControlCenter}
             className="inline-flex h-8 w-8 items-center justify-center rounded-xl border border-white/12 bg-white/[0.03] text-white/82 transition-colors hover:bg-white/10"
           >
diff --git a/src/widgets/space-tools-dock/ui/SpaceToolsDockWidget.tsx b/src/widgets/space-tools-dock/ui/SpaceToolsDockWidget.tsx
index 48511a9..a4be29f 100644
--- a/src/widgets/space-tools-dock/ui/SpaceToolsDockWidget.tsx
+++ b/src/widgets/space-tools-dock/ui/SpaceToolsDockWidget.tsx
@@ -4,6 +4,7 @@ import type { SceneAssetMap } from '@/entities/media';
 import type { PlanTier } from '@/entities/plan';
 import type { SceneTheme } from '@/entities/scene';
 import { SOUND_PRESETS, type RecentThought, type TimerPreset } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { ExitHoldButton } from '@/features/exit-hold';
 import { ManagePlanSheetContent, PaywallSheetContent } from '@/features/paywall-sheet';
 import { PlanPill } from '@/features/plan-pill';
@@ -75,6 +76,7 @@ export const SpaceToolsDockWidget = ({
   onStatusMessage,
   onExitRequested,
 }: SpaceToolsDockWidgetProps) => {
+  const { toolsDock, controlCenter } = copy.space;
   const [openPopover, setOpenPopover] = useState<SpaceAnchorPopoverId | null>(null);
   const [utilityPanel, setUtilityPanel] = useState<SpaceUtilityPanelId | null>(null);
   const [autoHideControls, setAutoHideControls] = useState(true);
@@ -86,7 +88,7 @@ export const SpaceToolsDockWidget = ({
 
   const selectedSoundLabel = useMemo(() => {
     return (
-      SOUND_PRESETS.find((preset) => preset.id === selectedPresetId)?.label ?? SOUND_PRESETS[0]?.label ?? '기본'
+      SOUND_PRESETS.find((preset) => preset.id === selectedPresetId)?.label ?? SOUND_PRESETS[0]?.label ?? copy.common.default
     );
   }, [selectedPresetId]);
 
@@ -233,11 +235,11 @@ export const SpaceToolsDockWidget = ({
 
     setNoteDraft('');
     onStatusMessage({
-      message: '인박스에 저장됨',
+      message: toolsDock.inboxSaved,
       durationMs: 4200,
       priority: 'undo',
       action: {
-        label: '실행취소',
+        label: toolsDock.undo,
         onClick: () => {
           const removed = onDeleteThought(addedThought.id);
 
@@ -245,7 +247,7 @@ export const SpaceToolsDockWidget = ({
             return;
           }
 
-          onStatusMessage({ message: '저장 취소됨' });
+          onStatusMessage({ message: toolsDock.inboxSaveUndone });
         },
       },
     });
@@ -263,14 +265,14 @@ export const SpaceToolsDockWidget = ({
     }
 
     onStatusMessage({
-      message: '삭제됨',
+      message: toolsDock.deleted,
       durationMs: 4200,
       priority: 'undo',
       action: {
-        label: '실행취소',
+        label: toolsDock.undo,
         onClick: () => {
           onRestoreThought(removedThought);
-          onStatusMessage({ message: '삭제를 취소했어요.' });
+          onStatusMessage({ message: toolsDock.deleteUndone });
         },
       },
     });
@@ -280,19 +282,19 @@ export const SpaceToolsDockWidget = ({
     const snapshot = onClearInbox();
 
     if (snapshot.length === 0) {
-      onStatusMessage({ message: '비울 항목이 없어요.' });
+      onStatusMessage({ message: toolsDock.emptyToClear });
       return;
     }
 
     onStatusMessage({
-      message: '모두 비워짐',
+      message: toolsDock.clearedAll,
       durationMs: 4200,
       priority: 'undo',
       action: {
-        label: '실행취소',
+        label: toolsDock.undo,
         onClick: () => {
           onRestoreThoughts(snapshot);
-          onStatusMessage({ message: '복원했어요.' });
+          onStatusMessage({ message: toolsDock.restored });
         },
       },
     });
@@ -304,28 +306,28 @@ export const SpaceToolsDockWidget = ({
       return;
     }
 
-    onStatusMessage({ message: 'NORMAL 플랜 사용 중 · 잠금 항목에서만 업그레이드할 수 있어요.' });
+    onStatusMessage({ message: toolsDock.normalPlanInfo });
   };
 
   const handleLockedClick = (source: string) => {
-    onStatusMessage({ message: `${source}은(는) PRO 기능이에요.` });
+    onStatusMessage({ message: toolsDock.proFeatureLocked(source) });
     openUtilityPanel('paywall');
   };
 
   const handleSelectProFeature = (featureId: string) => {
     const label =
       featureId === 'scene-packs'
-        ? 'Scene Packs'
+        ? toolsDock.featureLabels.scenePacks
         : featureId === 'sound-packs'
-          ? 'Sound Packs'
-          : 'Profiles';
+          ? toolsDock.featureLabels.soundPacks
+          : toolsDock.featureLabels.profiles;
 
-    onStatusMessage({ message: `${label} 준비 중(더미)` });
+    onStatusMessage({ message: toolsDock.proFeaturePending(label) });
   };
 
   const handleStartPro = () => {
     setPlan('pro');
-    onStatusMessage({ message: '결제(더미)' });
+    onStatusMessage({ message: toolsDock.purchaseMock });
     openUtilityPanel('control-center');
   };
 
@@ -370,7 +372,7 @@ export const SpaceToolsDockWidget = ({
       {isFocusMode && openPopover ? (
         <button
           type="button"
-          aria-label="팝오버 닫기"
+          aria-label={toolsDock.popoverCloseAria}
           onClick={() => setOpenPopover(null)}
           className="fixed inset-0 z-30"
         />
@@ -417,7 +419,7 @@ export const SpaceToolsDockWidget = ({
                 className="inline-flex items-center gap-1.5 rounded-full border border-white/14 bg-black/24 px-2.5 py-1.5 text-[11px] text-white/88 backdrop-blur-md transition-opacity hover:opacity-100"
               >
                 <span aria-hidden className="text-white/82">{ANCHOR_ICON.notes}</span>
-                <span>Notes {formatThoughtCount(thoughtCount)}</span>
+                <span>{toolsDock.notesButton} {formatThoughtCount(thoughtCount)}</span>
                 <span aria-hidden className="text-white/60">▾</span>
               </button>
 
@@ -485,7 +487,7 @@ export const SpaceToolsDockWidget = ({
       <SpaceSideSheet
         open={isFocusMode && utilityPanel !== null}
         title={utilityPanel ? UTILITY_PANEL_TITLE[utilityPanel] : ''}
-        subtitle={utilityPanel === 'control-center' ? '배경 · 타이머 · 사운드를 그 자리에서 바꿔요.' : undefined}
+        subtitle={utilityPanel === 'control-center' ? controlCenter.sideSheetSubtitle : undefined}
         headerAction={
           utilityPanel === 'control-center' ? (
             <PlanPill plan={plan} onClick={handlePlanPillClick} />
@@ -539,8 +541,8 @@ export const SpaceToolsDockWidget = ({
         {utilityPanel === 'manage-plan' ? (
           <ManagePlanSheetContent
             onClose={() => setUtilityPanel(null)}
-            onManage={() => onStatusMessage({ message: '구독 관리(더미)' })}
-            onRestore={() => onStatusMessage({ message: '구매 복원(더미)' })}
+            onManage={() => onStatusMessage({ message: toolsDock.manageSubscriptionMock })}
+            onRestore={() => onStatusMessage({ message: toolsDock.restorePurchaseMock })}
           />
         ) : null}
       </SpaceSideSheet>
diff --git a/src/widgets/space-tools-dock/ui/constants.tsx b/src/widgets/space-tools-dock/ui/constants.tsx
index 1f2e65a..8eecb9d 100644
--- a/src/widgets/space-tools-dock/ui/constants.tsx
+++ b/src/widgets/space-tools-dock/ui/constants.tsx
@@ -1,4 +1,5 @@
 import type { SpaceUtilityPanelId } from '../model/types';
+import { copy } from '@/shared/i18n';
 
 export const ANCHOR_ICON = {
   sound: (
@@ -66,10 +67,10 @@ export const RAIL_ICON = {
 };
 
 export const UTILITY_PANEL_TITLE: Record<SpaceUtilityPanelId, string> = {
-  'control-center': 'Quick Controls',
-  inbox: '인박스',
-  paywall: 'PRO',
-  'manage-plan': '플랜 관리',
+  'control-center': copy.space.toolsDock.utilityPanelTitle['control-center'],
+  inbox: copy.space.toolsDock.utilityPanelTitle.inbox,
+  paywall: copy.space.toolsDock.utilityPanelTitle.paywall,
+  'manage-plan': copy.space.toolsDock.utilityPanelTitle['manage-plan'],
 };
 
 export const formatThoughtCount = (count: number) => {
diff --git a/src/widgets/space-tools-dock/ui/panels/InboxToolPanel.tsx b/src/widgets/space-tools-dock/ui/panels/InboxToolPanel.tsx
index 986e580..e57d836 100644
--- a/src/widgets/space-tools-dock/ui/panels/InboxToolPanel.tsx
+++ b/src/widgets/space-tools-dock/ui/panels/InboxToolPanel.tsx
@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import type { RecentThought } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { InboxList } from '@/features/inbox';
 
 interface InboxToolPanelProps {
@@ -20,13 +21,13 @@ export const InboxToolPanel = ({
   return (
     <div className="relative space-y-3.5">
       <div className="flex items-center justify-between gap-2">
-        <p className="text-xs text-white/58">나중에 모아보는 읽기 전용 인박스</p>
+        <p className="text-xs text-white/58">{copy.space.inbox.readOnly}</p>
         <button
           type="button"
           onClick={() => setConfirmOpen(true)}
           className="rounded-full border border-white/20 bg-white/8 px-2.5 py-1 text-[11px] text-white/74 transition-colors hover:bg-white/14 hover:text-white"
         >
-          모두 비우기
+          {copy.space.inbox.clearAll}
         </button>
       </div>
       <InboxList
@@ -38,15 +39,15 @@ export const InboxToolPanel = ({
       {confirmOpen ? (
         <div className="absolute inset-0 z-10 flex items-center justify-center rounded-2xl bg-slate-950/70 px-3 backdrop-blur-sm">
           <div className="w-full max-w-[272px] rounded-2xl border border-white/14 bg-slate-900/92 p-3.5 shadow-xl shadow-slate-950/45">
-            <p className="text-sm font-medium text-white/92">정말 인박스를 비울까요?</p>
-            <p className="mt-1 text-[11px] text-white/60">실수라면 토스트에서 실행취소할 수 있어요.</p>
+            <p className="text-sm font-medium text-white/92">{copy.space.inbox.clearConfirmTitle}</p>
+            <p className="mt-1 text-[11px] text-white/60">{copy.space.inbox.clearConfirmDescription}</p>
             <div className="mt-3 flex justify-end gap-1.5">
               <button
                 type="button"
                 onClick={() => setConfirmOpen(false)}
                 className="rounded-full border border-white/20 bg-white/8 px-2.5 py-1 text-[11px] text-white/74 transition-colors hover:bg-white/14 hover:text-white"
               >
-                취소
+                {copy.common.cancel}
               </button>
               <button
                 type="button"
@@ -56,7 +57,7 @@ export const InboxToolPanel = ({
                 }}
                 className="rounded-full border border-rose-200/34 bg-rose-200/16 px-2.5 py-1 text-[11px] text-rose-100/92 transition-colors hover:bg-rose-200/24"
               >
-                비우기
+                {copy.space.inbox.clearButton}
               </button>
             </div>
           </div>
diff --git a/src/widgets/space-tools-dock/ui/panels/SettingsToolPanel.tsx b/src/widgets/space-tools-dock/ui/panels/SettingsToolPanel.tsx
index 5fcc07c..93a6e3d 100644
--- a/src/widgets/space-tools-dock/ui/panels/SettingsToolPanel.tsx
+++ b/src/widgets/space-tools-dock/ui/panels/SettingsToolPanel.tsx
@@ -3,6 +3,7 @@
 import { useState } from 'react';
 import type { SceneTheme } from '@/entities/scene';
 import type { TimerPreset } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 import { DEFAULT_PRESET_OPTIONS } from '@/shared/config/settingsOptions';
 import { cn } from '@/shared/lib/cn';
 
@@ -23,6 +24,7 @@ export const SettingsToolPanel = ({
   onSelectScene,
   onSelectTimer,
 }: SettingsToolPanelProps) => {
+  const { settingsPanel } = copy.space;
   const [reduceMotion, setReduceMotion] = useState(false);
   const [defaultPresetId, setDefaultPresetId] = useState<
     (typeof DEFAULT_PRESET_OPTIONS)[number]['id']
@@ -33,8 +35,8 @@ export const SettingsToolPanel = ({
       <section className="rounded-2xl border border-white/14 bg-white/7 px-3.5 py-3">
         <div className="flex items-center justify-between gap-3">
           <div>
-            <p className="text-sm font-medium text-white">Reduce Motion</p>
-            <p className="mt-1 text-xs text-white/58">화면 전환을 조금 더 차분하게 표시합니다.</p>
+            <p className="text-sm font-medium text-white">{settingsPanel.reduceMotion}</p>
+            <p className="mt-1 text-xs text-white/58">{settingsPanel.reduceMotionDescription}</p>
           </div>
           <button
             type="button"
@@ -59,8 +61,8 @@ export const SettingsToolPanel = ({
       </section>
 
       <section className="rounded-2xl border border-white/14 bg-white/7 px-3.5 py-3">
-        <p className="text-sm font-medium text-white">배경</p>
-        <p className="mt-1 text-xs text-white/58">몰입 중에도 배경 scene을 바꿀 수 있어요.</p>
+        <p className="text-sm font-medium text-white">{settingsPanel.background}</p>
+        <p className="mt-1 text-xs text-white/58">{settingsPanel.backgroundDescription}</p>
         <div className="mt-2 flex flex-wrap gap-2">
           {scenes.slice(0, 4).map((scene) => {
             const selected = scene.id === selectedSceneId;
@@ -85,8 +87,8 @@ export const SettingsToolPanel = ({
       </section>
 
       <section className="rounded-2xl border border-white/14 bg-white/7 px-3.5 py-3">
-        <p className="text-sm font-medium text-white">타이머 프리셋</p>
-        <p className="mt-1 text-xs text-white/58">기본 프리셋만 빠르게 고를 수 있어요.</p>
+        <p className="text-sm font-medium text-white">{settingsPanel.timerPreset}</p>
+        <p className="mt-1 text-xs text-white/58">{settingsPanel.timerPresetDescription}</p>
         <div className="mt-2 flex flex-wrap gap-2">
           {timerPresets.slice(0, 3).map((preset) => {
             const selected = preset.label === selectedTimerLabel;
@@ -111,7 +113,7 @@ export const SettingsToolPanel = ({
       </section>
 
       <section className="rounded-2xl border border-white/14 bg-white/7 px-3.5 py-3">
-        <p className="text-sm font-medium text-white">기본 프리셋</p>
+        <p className="text-sm font-medium text-white">{settingsPanel.defaultPreset}</p>
         <div className="mt-2 flex flex-wrap gap-2">
           {DEFAULT_PRESET_OPTIONS.map((preset) => (
             <button
diff --git a/src/widgets/space-tools-dock/ui/panels/StatsToolPanel.tsx b/src/widgets/space-tools-dock/ui/panels/StatsToolPanel.tsx
index 29c5177..45cce03 100644
--- a/src/widgets/space-tools-dock/ui/panels/StatsToolPanel.tsx
+++ b/src/widgets/space-tools-dock/ui/panels/StatsToolPanel.tsx
@@ -1,11 +1,12 @@
 import { TODAY_STATS, WEEKLY_STATS } from '@/entities/session';
+import { copy } from '@/shared/i18n';
 
 export const StatsToolPanel = () => {
   const previewStats = [TODAY_STATS[0], TODAY_STATS[1], WEEKLY_STATS[0], WEEKLY_STATS[2]];
 
   return (
     <div className="space-y-4">
-      <p className="text-xs text-white/58">오늘 흐름과 최근 7일 리듬을 가볍게 확인하세요.</p>
+      <p className="text-xs text-white/58">{copy.space.statsPanel.description}</p>
 
       <section className="grid gap-2.5 sm:grid-cols-2">
         {previewStats.map((stat) => (
@@ -19,7 +20,7 @@ export const StatsToolPanel = () => {
 
       <section className="rounded-2xl border border-white/14 bg-white/6 p-3.5">
         <div className="h-28 rounded-xl border border-dashed border-white/20 bg-[linear-gradient(180deg,rgba(148,163,184,0.14),rgba(148,163,184,0.02))]" />
-        <p className="mt-2 text-[11px] text-white/54">그래프 플레이스홀더</p>
+        <p className="mt-2 text-[11px] text-white/54">{copy.space.statsPanel.graphPlaceholder}</p>
       </section>
     </div>
   );
diff --git a/src/widgets/space-tools-dock/ui/popovers/QuickNotesPopover.tsx b/src/widgets/space-tools-dock/ui/popovers/QuickNotesPopover.tsx
index 964ca9d..438de88 100644
--- a/src/widgets/space-tools-dock/ui/popovers/QuickNotesPopover.tsx
+++ b/src/widgets/space-tools-dock/ui/popovers/QuickNotesPopover.tsx
@@ -1,3 +1,5 @@
+import { copy } from '@/shared/i18n';
+
 interface QuickNotesPopoverProps {
   noteDraft: string;
   onDraftChange: (value: string) => void;
@@ -16,7 +18,7 @@ export const QuickNotesPopover = ({
       className="mb-2 w-[min(320px,calc(100vw-2rem))] rounded-2xl border border-white/14 bg-slate-950/74 p-3 shadow-[0_18px_44px_rgba(2,6,23,0.4)] backdrop-blur-xl animate-[popover-rise_220ms_ease-out] motion-reduce:animate-none"
       style={{ position: 'absolute', bottom: 'calc(100% + 0.5rem)', left: 0 }}
     >
-      <p className="text-[11px] text-white/56">떠오른 생각을 잠깐 주차해요</p>
+      <p className="text-[11px] text-white/56">{copy.space.quickNotes.title}</p>
       <div className="mt-2 flex gap-1.5">
         <input
           value={noteDraft}
@@ -29,7 +31,7 @@ export const QuickNotesPopover = ({
             event.preventDefault();
             onDraftEnter();
           }}
-          placeholder="떠오른 생각을 잠깐 주차…"
+          placeholder={copy.space.quickNotes.placeholder}
           className="h-8 min-w-0 flex-1 rounded-lg border border-white/14 bg-white/[0.04] px-2.5 text-xs text-white placeholder:text-white/38 focus:border-sky-200/42 focus:outline-none"
         />
         <button
@@ -37,10 +39,10 @@ export const QuickNotesPopover = ({
           onClick={onSubmit}
           className="h-8 rounded-lg border border-sky-200/34 bg-sky-200/14 px-2.5 text-xs text-white/88"
         >
-          저장
+          {copy.space.quickNotes.submit}
         </button>
       </div>
-      <p className="mt-2 text-[11px] text-white/52">나중에 인박스에서 정리해요.</p>
+      <p className="mt-2 text-[11px] text-white/52">{copy.space.quickNotes.hint}</p>
     </div>
   );
 };
diff --git a/src/widgets/space-tools-dock/ui/popovers/QuickSoundPopover.tsx b/src/widgets/space-tools-dock/ui/popovers/QuickSoundPopover.tsx
index 70048fd..e80db00 100644
--- a/src/widgets/space-tools-dock/ui/popovers/QuickSoundPopover.tsx
+++ b/src/widgets/space-tools-dock/ui/popovers/QuickSoundPopover.tsx
@@ -1,6 +1,7 @@
 import { cn } from '@/shared/lib/cn';
 import type { SoundPreset } from '@/entities/session';
 import type { KeyboardEvent as ReactKeyboardEvent } from 'react';
+import { copy } from '@/shared/i18n';
 
 interface QuickSoundPopoverProps {
   selectedSoundLabel: string;
@@ -32,14 +33,14 @@ export const QuickSoundPopover = ({
       className="mb-2 w-[min(288px,calc(100vw-2rem))] rounded-2xl border border-white/14 bg-slate-950/74 p-3 shadow-[0_18px_44px_rgba(2,6,23,0.4)] backdrop-blur-xl animate-[popover-rise_220ms_ease-out] motion-reduce:animate-none"
       style={{ position: 'absolute', bottom: 'calc(100% + 0.5rem)', right: 0 }}
     >
-      <p className="text-[11px] text-white/56">현재 사운드</p>
+      <p className="text-[11px] text-white/56">{copy.space.quickSound.currentSound}</p>
       <p className="mt-1 truncate text-sm font-medium text-white/88">{selectedSoundLabel}</p>
 
       <div className="mt-3 rounded-xl border border-white/14 bg-white/[0.04] px-2.5 py-2">
         <div className="flex items-center gap-2">
           <button
             type="button"
-            aria-label={isSoundMuted ? '음소거 해제' : '음소거'}
+            aria-label={isSoundMuted ? copy.space.quickSound.unmuteAriaLabel : copy.space.quickSound.muteAriaLabel}
             onClick={onToggleMute}
             className="inline-flex h-7 w-7 items-center justify-center rounded-full border border-white/16 bg-white/[0.05] text-xs text-white/80 transition-colors hover:bg-white/[0.12]"
           >
@@ -53,7 +54,7 @@ export const QuickSoundPopover = ({
             value={soundVolume}
             onChange={(event) => onVolumeChange(Number(event.target.value))}
             onKeyDown={onVolumeKeyDown}
-            aria-label="사운드 볼륨"
+            aria-label={copy.space.quickSound.volumeAriaLabel}
             className="h-2 w-full cursor-pointer appearance-none rounded-full bg-white/18 accent-sky-200"
           />
           <span className="w-9 text-right text-[11px] text-white/66">
@@ -62,7 +63,7 @@ export const QuickSoundPopover = ({
         </div>
       </div>
 
-      <p className="mt-3 text-[11px] text-white/56">빠른 전환</p>
+      <p className="mt-3 text-[11px] text-white/56">{copy.space.quickSound.quickSwitch}</p>
       <div className="mt-2 flex flex-wrap gap-1.5">
         {quickSoundPresets.map((preset) => {
           const selected = preset.id === selectedPresetId;
diff --git a/src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx b/src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx
index af71956..4b7b360 100644
--- a/src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx
+++ b/src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx
@@ -22,6 +22,7 @@ import {
 } from '@/entities/session';
 import { useFocusSessionEngine } from '@/features/focus-session';
 import { useSoundPlayback, useSoundPresetSelection } from '@/features/sound-preset';
+import { copy } from '@/shared/i18n';
 import { useHudStatusLine } from '@/shared/lib/useHudStatusLine';
 import { SpaceFocusHudWidget } from '@/widgets/space-focus-hud';
 import { SpaceSetupDrawerWidget } from '@/widgets/space-setup-drawer';
@@ -436,7 +437,7 @@ export const SpaceWorkspaceWidget = () => {
     setPendingSessionEntryPoint(entryPoint);
     setPreviewPlaybackState('paused');
     setWorkspaceMode('focus');
-    queuedFocusStatusMessageRef.current = '준비 완료 · 시작 버튼을 눌러 집중을 시작해요.';
+    queuedFocusStatusMessageRef.current = copy.space.workspace.readyToStart;
   };
 
   const startFocusFlow = async () => {
@@ -462,7 +463,7 @@ export const SpaceWorkspaceWidget = () => {
 
     setPreviewPlaybackState('paused');
     pushStatusLine({
-      message: '세션을 시작하지 못했어요. 잠시 후 다시 시도해 주세요.',
+        message: copy.space.workspace.startFailed,
     });
   };
 
@@ -488,7 +489,7 @@ export const SpaceWorkspaceWidget = () => {
 
     if (!resumedSession) {
       pushStatusLine({
-        message: '세션을 다시 시작하지 못했어요.',
+        message: copy.space.workspace.resumeFailed,
       });
     }
   };
@@ -498,7 +499,7 @@ export const SpaceWorkspaceWidget = () => {
 
     if (!didAbandon) {
       pushStatusLine({
-        message: '세션 종료를 완료하지 못했어요.',
+        message: copy.space.workspace.abandonFailed,
       });
       return;
     }
@@ -518,7 +519,7 @@ export const SpaceWorkspaceWidget = () => {
 
     if (!pausedSession) {
       pushStatusLine({
-        message: '세션을 일시정지하지 못했어요.',
+        message: copy.space.workspace.pauseFailed,
       });
     }
   };
@@ -532,13 +533,13 @@ export const SpaceWorkspaceWidget = () => {
 
     if (!restartedSession) {
       pushStatusLine({
-        message: '현재 페이즈를 다시 시작하지 못했어요.',
+        message: copy.space.workspace.restartFailed,
       });
       return;
     }
 
     pushStatusLine({
-      message: '현재 페이즈를 처음부터 다시 시작했어요.',
+      message: copy.space.workspace.restarted,
     });
   };
 
@@ -557,7 +558,7 @@ export const SpaceWorkspaceWidget = () => {
 
       if (!completedSession) {
         pushStatusLine({
-          message: '현재 세션 완료를 서버에 반영하지 못했어요.',
+          message: copy.space.workspace.goalCompleteSyncFailed,
         });
         return;
       }
@@ -568,7 +569,7 @@ export const SpaceWorkspaceWidget = () => {
     setPendingSessionEntryPoint('goal-complete');
     setPreviewPlaybackState('paused');
     pushStatusLine({
-      message: '다음 한 조각 준비 완료 · 시작 버튼을 눌러 이어가요.',
+      message: copy.space.workspace.nextGoalReady,
     });
   };
 
diff --git a/src/widgets/stats-overview/ui/StatsOverviewWidget.tsx b/src/widgets/stats-overview/ui/StatsOverviewWidget.tsx
index d600252..ba746ea 100644
--- a/src/widgets/stats-overview/ui/StatsOverviewWidget.tsx
+++ b/src/widgets/stats-overview/ui/StatsOverviewWidget.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import Link from 'next/link';
+import { copy } from '@/shared/i18n';
 import { useFocusStats } from '@/features/stats';
 
 const StatSection = ({
@@ -42,45 +43,46 @@ const formatMinutes = (minutes: number) => {
 };
 
 export const StatsOverviewWidget = () => {
+  const { stats } = copy;
   const { summary, isLoading, error, source, refetch } = useFocusStats();
   const todayItems = [
     {
       id: 'today-focus',
-      label: '오늘 집중 시간',
+      label: stats.todayFocus,
       value: formatMinutes(summary.today.focusMinutes),
-      delta: source === 'api' ? 'API' : 'Mock',
+      delta: source === 'api' ? stats.apiLabel : stats.mockLabel,
     },
     {
       id: 'today-cycles',
-      label: '완료한 사이클',
-      value: `${summary.today.completedCycles}회`,
+      label: stats.completedCycles,
+      value: `${summary.today.completedCycles}${stats.countUnit}`,
       delta: `${summary.today.completedCycles > 0 ? '+' : ''}${summary.today.completedCycles}`,
     },
     {
       id: 'today-entry',
-      label: '입장 횟수',
-      value: `${summary.today.sessionEntries}회`,
-      delta: source === 'api' ? '동기화됨' : '임시값',
+      label: stats.sessionEntries,
+      value: `${summary.today.sessionEntries}${stats.countUnit}`,
+      delta: source === 'api' ? stats.syncedApi : stats.temporary,
     },
   ];
   const weeklyItems = [
     {
       id: 'week-focus',
-      label: '최근 7일 집중 시간',
+      label: stats.last7DaysFocus,
       value: formatMinutes(summary.last7Days.focusMinutes),
-      delta: source === 'api' ? '실집계' : '목업',
+      delta: source === 'api' ? stats.actualAggregate : stats.mockAggregate,
     },
     {
       id: 'week-best-day',
-      label: '최고 몰입일',
+      label: stats.bestDay,
       value: summary.last7Days.bestDayLabel,
       delta: formatMinutes(summary.last7Days.bestDayFocusMinutes),
     },
     {
       id: 'week-consistency',
-      label: '연속 달성',
-      value: `${summary.last7Days.streakDays}일`,
-      delta: summary.last7Days.streakDays > 0 ? '유지 중' : '시작 전',
+      label: stats.streak,
+      value: `${summary.last7Days.streakDays}${stats.dayUnit}`,
+      delta: summary.last7Days.streakDays > 0 ? stats.streakActive : stats.streakStart,
     },
   ];
 
@@ -88,12 +90,12 @@ export const StatsOverviewWidget = () => {
     <div className="min-h-screen bg-[radial-gradient(circle_at_18%_0%,rgba(167,204,237,0.45),transparent_50%),radial-gradient(circle_at_88%_8%,rgba(191,219,254,0.4),transparent_42%),linear-gradient(170deg,#f8fafc_0%,#eef4fb_52%,#e9f1fa_100%)] text-brand-dark">
       <div className="mx-auto w-full max-w-6xl px-4 pb-10 pt-6 sm:px-6">
         <header className="mb-6 flex items-center justify-between rounded-xl border border-brand-dark/12 bg-white/72 px-4 py-3 backdrop-blur-sm">
-          <h1 className="text-xl font-semibold">Stats</h1>
+          <h1 className="text-xl font-semibold">{stats.title}</h1>
           <Link
             href="/app"
             className="rounded-lg border border-brand-dark/16 px-3 py-1.5 text-xs text-brand-dark/82 transition hover:bg-white/90"
           >
-            허브로
+            {copy.common.hub}
           </Link>
         </header>
 
@@ -102,13 +104,13 @@ export const StatsOverviewWidget = () => {
             <div className="flex flex-wrap items-center justify-between gap-2">
               <div>
                 <p className="text-xs font-medium text-brand-dark/72">
-                  {source === 'api' ? 'API 통계 사용 중' : 'API 실패로 mock 통계 표시 중'}
+                  {source === 'api' ? stats.sourceApi : stats.sourceMock}
                 </p>
                 {error ? (
                   <p className="mt-1 text-xs text-rose-500">{error}</p>
                 ) : (
                   <p className="mt-1 text-xs text-brand-dark/56">
-                    {isLoading ? '통계를 불러오는 중이에요.' : '화면 진입 시 최신 요약을 동기화합니다.'}
+                    {isLoading ? stats.loading : stats.synced}
                   </p>
                 )}
               </div>
@@ -119,16 +121,16 @@ export const StatsOverviewWidget = () => {
                 }}
                 className="rounded-lg border border-brand-dark/16 px-3 py-1.5 text-xs text-brand-dark/82 transition hover:bg-white/90"
               >
-                새로고침
+                {stats.refresh}
               </button>
             </div>
           </section>
 
-          <StatSection title="오늘" items={todayItems} />
-          <StatSection title="최근 7일" items={weeklyItems} />
+          <StatSection title={stats.today} items={todayItems} />
+          <StatSection title={stats.last7Days} items={weeklyItems} />
 
           <section className="space-y-3">
-            <h2 className="text-lg font-semibold text-brand-dark">집중 흐름 그래프</h2>
+            <h2 className="text-lg font-semibold text-brand-dark">{stats.chartTitle}</h2>
             <div className="rounded-xl border border-dashed border-brand-dark/18 bg-white/65 p-5">
               <div className="h-52 rounded-lg border border-brand-dark/12 bg-[linear-gradient(180deg,rgba(148,163,184,0.15),rgba(148,163,184,0.04))] p-4">
                 {summary.trend.length > 0 ? (
@@ -141,7 +143,7 @@ export const StatsOverviewWidget = () => {
                           <div
                             className="w-full rounded-md bg-brand-primary/55"
                             style={{ height: `${barHeight}%` }}
-                            title={`${point.date} · ${point.focusMinutes}분`}
+                            title={stats.barTitle(point.date, point.focusMinutes)}
                           />
                           <span className="text-[10px] text-brand-dark/56">
                             {point.date.slice(5)}
@@ -154,8 +156,8 @@ export const StatsOverviewWidget = () => {
               </div>
               <p className="mt-3 text-xs text-brand-dark/56">
                 {summary.trend.length > 0
-                  ? 'trend 응답으로 간단한 막대 그래프를 렌더링합니다.'
-                  : 'trend 응답이 비어 있어 플레이스홀더 상태입니다.'}
+                  ? stats.chartWithTrend
+                  : stats.chartWithoutTrend}
               </p>
             </div>
           </section>