diff --git a/app/(main)/manager-signup/page.tsx b/app/(main)/manager-signup/page.tsx
index 91356aa..f7d50c0 100644
--- a/app/(main)/manager-signup/page.tsx
+++ b/app/(main)/manager-signup/page.tsx
@@ -151,7 +151,7 @@ export default function ManagerSignupPage() {
               href="/login"
               className="flex w-full items-center justify-center rounded-xl border-2 border-(--color-primary) bg-white py-3 font-semibold text-(--color-primary) no-underline transition-all duration-150 hover:bg-(--color-primary) hover:text-white"
             >
-              Quay lại đăng nhập
+              Back to login
             </Link>
           </div>
         )}
@@ -164,10 +164,10 @@ export default function ManagerSignupPage() {
             </div>
             <div className="text-center">
               <h2 className="mb-2 text-lg font-semibold text-(--color-text-primary)">
-                Không thể kết nối
+                Unable to connect
               </h2>
               <p className="text-sm text-(--color-text-muted)">
-                Không thể kiểm tra trạng thái đăng ký. Vui lòng thử lại.
+                Unable to check registration status. Please try again.
               </p>
             </div>
             <Button
@@ -185,13 +185,13 @@ export default function ManagerSignupPage() {
                   .catch(() => setPageState("error"));
               }}
             >
-              Thử lại
+              Retry
             </Button>
             <Link
               href="/login"
               className="text-sm text-(--color-primary) underline"
             >
-              Quay lại đăng nhập
+              Back to login
             </Link>
           </div>
         )}
@@ -202,15 +202,15 @@ export default function ManagerSignupPage() {
             {[
               {
                 id: "name",
-                label: "Họ tên",
+                label: "Full name",
                 icon: "fa-user",
-                placeholder: "Nguyễn Văn A",
+                placeholder: "John Doe",
                 field: "name" as const,
                 type: "text",
               },
               {
                 id: "phone",
-                label: "Số điện thoại",
+                label: "Phone number",
                 icon: "fa-phone",
                 placeholder: "0987654321",
                 field: "phone" as const,
@@ -218,15 +218,15 @@ export default function ManagerSignupPage() {
               },
               {
                 id: "password",
-                label: "Mật khẩu",
+                label: "Password",
                 icon: "fa-lock",
-                placeholder: "Ít nhất 6 ký tự",
+                placeholder: "At least 6 characters",
                 field: "password" as const,
                 type: "password",
               },
               {
                 id: "eateryName",
-                label: "Tên nhà hàng",
+                label: "Restaurant name",
                 icon: "fa-store",
                 placeholder: "Coffee & More",
                 field: "eateryName" as const,
@@ -280,18 +280,17 @@ export default function ManagerSignupPage() {
               >
                 {isLoading ? (
                   <>
-                    <i className="fa-solid fa-spinner fa-spin mr-2"></i>Đang xử
-                    lý...
+                    <i className="fa-solid fa-spinner fa-spin mr-2"></i>Processing...
                   </>
                 ) : (
-                  "Đăng ký"
+                  "Register"
                 )}
               </Button>
               <Link
                 href="/login"
                 className="flex w-full items-center justify-center rounded-xl border-2 border-(--color-primary) bg-white py-3 font-semibold text-(--color-primary) no-underline transition-all duration-150 hover:bg-(--color-primary) hover:text-white"
               >
-                Đã có tài khoản? Đăng nhập
+                Already have an account? Sign in
               </Link>
             </div>
           </form>
diff --git a/app/(main)/payment/page.tsx b/app/(main)/payment/page.tsx
index 60d77ef..b9337d3 100644
--- a/app/(main)/payment/page.tsx
+++ b/app/(main)/payment/page.tsx
@@ -41,13 +41,13 @@ export default function PaymentPage() {
             <div className="bg-card overflow-hidden rounded-2xl border border-(--color-border-light)">
               <div className="border-b border-(--color-border-light) px-4 py-3">
                 <h1 className="text-foreground text-lg font-bold md:text-xl">
-                  Trang thanh toán
+                  Payment
                 </h1>
               </div>
 
               {items?.length === 0 ? (
                 <div className="px-4 py-10 text-center text-(--color-text-muted)">
-                  Chưa có sản phẩm nào trong giỏ hàng.
+                  Your cart is empty.
                 </div>
               ) : (
                 <div className="overflow-x-auto">
@@ -102,7 +102,7 @@ export default function PaymentPage() {
                                   <button
                                     onClick={() => decreaseQty(id)}
                                     className="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--color-border) hover:bg-(--color-border-light)"
-                                    aria-label={`Giảm số lượng ${name}`}
+                                    aria-label={`Decrease quantity of ${name}`}
                                   >
                                     -
                                   </button>
@@ -114,12 +114,12 @@ export default function PaymentPage() {
                                       setQuantity(id, Number(e.target.value))
                                     }
                                     className="h-8 w-16 rounded-lg border border-(--color-border) bg-transparent text-center"
-                                    title="Nhập số lượng"
+                                    title="Enter quantity"
                                   />
                                   <button
                                     onClick={() => increaseQty(id)}
                                     className="inline-flex h-8 w-8 items-center justify-center rounded-lg border border-(--color-border) hover:bg-(--color-border-light)"
-                                    aria-label={`Tăng số lượng ${name}`}
+                                    aria-label={`Increase quantity of ${name}`}
                                   >
                                     +
                                   </button>
@@ -131,7 +131,7 @@ export default function PaymentPage() {
                                   variant="danger"
                                   size="md"
                                   style="payment"
-                                  aria-label={`Xóa ${name} khỏi giỏ hàng`}
+                                  aria-label={`Remove ${name} from cart`}
                                 >
                                   Delete product
                                 </Button>
diff --git a/app/(manager)/manager/create-staff/page.tsx b/app/(manager)/manager/create-staff/page.tsx
index 1b696d8..367a963 100644
--- a/app/(manager)/manager/create-staff/page.tsx
+++ b/app/(manager)/manager/create-staff/page.tsx
@@ -27,13 +27,13 @@ export default function CreateStaffPage() {
 
   const validate = () => {
     const next = { name: "", phone: "", password: "", submit: "" };
-    if (!form.name.trim()) next.name = "Vui lòng nhập họ tên";
-    if (!form.phone.trim()) next.phone = "Vui lòng nhập số điện thoại";
+    if (!form.name.trim()) next.name = "Please enter full name";
+    if (!form.phone.trim()) next.phone = "Please enter phone number";
     else if (!validatePhone(form.phone))
-      next.phone = "Số điện thoại không hợp lệ (vd: 0987654321)";
-    if (!form.password.trim()) next.password = "Vui lòng nhập mật khẩu";
+      next.phone = "Invalid phone number (e.g. 0987654321)";
+    if (!form.password.trim()) next.password = "Please enter password";
     else if (form.password.length < 6)
-      next.password = "Mật khẩu phải có ít nhất 6 ký tự";
+      next.password = "Password must be at least 6 characters";
     setErrors(next);
     return !next.name && !next.phone && !next.password;
   };
@@ -55,17 +55,17 @@ export default function CreateStaffPage() {
       } else {
         const errorCode = (await res.text().catch(() => "")).trim();
         const errorMap: Record<string, string> = {
-          ExistedUser: "Số điện thoại đã được đăng ký",
-          InvalidPhoneNumber: "Số điện thoại không hợp lệ",
-          InvalidManager: "Không tìm thấy tài khoản manager",
+          ExistedUser: "Phone number already registered",
+          InvalidPhoneNumber: "Invalid phone number",
+          InvalidManager: "Manager account not found",
         };
         setErrors({
           ...errors,
-          submit: errorMap[errorCode] ?? "Đã có lỗi xảy ra, vui lòng thử lại",
+          submit: errorMap[errorCode] ?? "An error occurred, please try again",
         });
       }
     } catch {
-      setErrors({ ...errors, submit: "Không thể kết nối, vui lòng thử lại" });
+      setErrors({ ...errors, submit: "Unable to connect, please try again" });
     } finally {
       setIsLoading(false);
     }
@@ -79,10 +79,10 @@ export default function CreateStaffPage() {
             <i className="fa-solid fa-user-plus text-2xl text-(--color-primary)"></i>
           </div>
           <h1 className="mb-1 text-2xl font-bold text-(--color-primary-dark)">
-            Tạo tài khoản nhân viên
+            Create Staff Account
           </h1>
           <p className="text-sm text-(--color-text-muted)">
-            Thêm nhân viên mới cho nhà hàng
+            Add a new staff member to the restaurant
           </p>
         </div>
 
@@ -90,15 +90,15 @@ export default function CreateStaffPage() {
           {[
             {
               id: "name",
-              label: "Họ tên",
+              label: "Full name",
               icon: "fa-user",
-              placeholder: "Nguyễn Văn A",
+              placeholder: "John Doe",
               field: "name" as const,
               type: "text",
             },
             {
               id: "phone",
-              label: "Số điện thoại",
+              label: "Phone number",
               icon: "fa-phone",
               placeholder: "0987654321",
               field: "phone" as const,
@@ -106,9 +106,9 @@ export default function CreateStaffPage() {
             },
             {
               id: "password",
-              label: "Mật khẩu",
+              label: "Password",
               icon: "fa-lock",
-              placeholder: "Ít nhất 6 ký tự",
+              placeholder: "At least 6 characters",
               field: "password" as const,
               type: "password",
             },
@@ -160,18 +160,17 @@ export default function CreateStaffPage() {
             >
               {isLoading ? (
                 <>
-                  <i className="fa-solid fa-spinner fa-spin mr-2"></i>Đang xử
-                  lý...
+                  <i className="fa-solid fa-spinner fa-spin mr-2"></i>Processing...
                 </>
               ) : (
-                "Tạo tài khoản"
+                "Create account"
               )}
             </Button>
             <Link
               href="/manager"
               className="flex w-full items-center justify-center rounded-xl border-2 border-(--color-primary) bg-white py-3 font-semibold text-(--color-primary) no-underline transition-all duration-150 hover:bg-(--color-primary) hover:text-white"
             >
-              Quay lại Dashboard
+              Back to Dashboard
             </Link>
           </div>
         </form>
diff --git a/app/(staff)/staff/schedule/page.tsx b/app/(staff)/staff/schedule/page.tsx
index 7b07d6a..7e17b67 100644
--- a/app/(staff)/staff/schedule/page.tsx
+++ b/app/(staff)/staff/schedule/page.tsx
@@ -96,7 +96,7 @@ export default function StaffSchedulePage() {
         <nav className="flex-1 space-y-0.5 overflow-y-auto p-3">
           {/* View toggle */}
           <p className="mb-1 px-3 pt-2 text-[10px] font-bold tracking-widest text-(--color-text-muted) uppercase">
-            Chế độ xem
+            View
           </p>
           <button
             type="button"
@@ -108,7 +108,7 @@ export default function StaffSchedulePage() {
             }`}
           >
             <i className={`fa-solid fa-table-columns w-4 text-center ${view === "week" ? "text-(--color-primary)" : ""}`}></i>
-            <span className="flex-1 text-left">Theo tuần</span>
+            <span className="flex-1 text-left">Weekly</span>
             {view === "week" && (
               <span className="h-1.5 w-1.5 rounded-full bg-(--color-primary)"></span>
             )}
@@ -123,7 +123,7 @@ export default function StaffSchedulePage() {
             }`}
           >
             <i className={`fa-solid fa-calendar w-4 text-center ${view === "month" ? "text-(--color-primary)" : ""}`}></i>
-            <span className="flex-1 text-left">Theo tháng</span>
+            <span className="flex-1 text-left">Monthly</span>
             {view === "month" && (
               <span className="h-1.5 w-1.5 rounded-full bg-(--color-primary)"></span>
             )}
@@ -132,7 +132,7 @@ export default function StaffSchedulePage() {
           {/* Navigation */}
           <div className="mt-2 pt-2">
             <p className="mb-1 px-3 text-[10px] font-bold tracking-widest text-(--color-text-muted) uppercase">
-              Điều hướng
+              Navigation
             </p>
             <button
               type="button"
@@ -140,7 +140,7 @@ export default function StaffSchedulePage() {
               className="flex w-full cursor-pointer items-center gap-3 rounded-xl border-none bg-transparent px-3 py-2.5 text-sm font-medium text-(--color-text-secondary) transition-all hover:bg-gray-50 hover:text-(--color-primary-dark)"
             >
               <i className="fa-solid fa-crosshairs w-4 text-center"></i>
-              <span className="flex-1 text-left">Hôm nay</span>
+              <span className="flex-1 text-left">Today</span>
             </button>
           </div>
 
@@ -148,7 +148,7 @@ export default function StaffSchedulePage() {
           {isManager && (
             <div className="mt-2 pt-2">
               <p className="mb-1 px-3 text-[10px] font-bold tracking-widest text-(--color-text-muted) uppercase">
-                Quản lý
+                Manager
               </p>
               <Link
                 href="/manager"
@@ -165,7 +165,7 @@ export default function StaffSchedulePage() {
                 className="mt-1 flex w-full cursor-pointer items-center gap-3 rounded-xl border-none bg-(--color-primary)/10 px-3 py-2.5 text-sm font-semibold text-(--color-primary) transition-all hover:bg-(--color-primary)/20"
               >
                 <i className="fa-solid fa-plus w-4 text-center"></i>
-                <span className="flex-1 text-left">Tạo ca mới</span>
+                <span className="flex-1 text-left">Create shift</span>
               </button>
             </div>
           )}
@@ -175,7 +175,7 @@ export default function StaffSchedulePage() {
             {isManager && (
               <div className="rounded-xl bg-gradient-to-br from-(--color-primary)/10 to-(--color-primary)/5 p-3">
                 <p className="text-[10px] font-bold tracking-wider text-(--color-text-muted) uppercase">
-                  Ngân sách tuần
+                  Weekly budget
                 </p>
                 <p className="mt-1 text-xl font-bold text-(--color-primary)">
                   {weeklyBudget >= 1_000_000
@@ -187,12 +187,12 @@ export default function StaffSchedulePage() {
             )}
             <div className="rounded-xl bg-gray-50 p-3">
               <p className="text-[10px] font-bold tracking-wider text-(--color-text-muted) uppercase">
-                Ca tuần này
+                Shifts this week
               </p>
               <p className="mt-1 text-xl font-bold text-(--color-text-secondary)">
                 {totalShiftsThisWeek}
               </p>
-              <p className="text-[10px] text-(--color-text-muted)">ca làm</p>
+              <p className="text-[10px] text-(--color-text-muted)">shifts</p>
             </div>
           </div>
         </nav>
@@ -242,12 +242,12 @@ export default function StaffSchedulePage() {
             {/* Title */}
             <div>
               <h1 className="text-foreground text-base font-bold md:text-lg">
-                {isManager ? "Quản lý ca làm" : "Đăng ký ca làm"}
+                {isManager ? "Manage Shifts" : "Register Shifts"}
               </h1>
               <p className="text-xs text-(--color-text-muted)">
                 {view === "week"
-                  ? `Tuần: ${weekLabel}`
-                  : `Tháng: ${MONTH_NAMES[currentDate.getMonth()]} ${currentDate.getFullYear()}`}
+                  ? `Week: ${weekLabel}`
+                  : `Month: ${MONTH_NAMES[currentDate.getMonth()]} ${currentDate.getFullYear()}`}
               </p>
             </div>
 
@@ -263,7 +263,7 @@ export default function StaffSchedulePage() {
                       : "bg-transparent text-(--color-text-secondary)"
                   }`}
                 >
-                  Tuần
+                  Week
                 </button>
                 <button
                   type="button"
@@ -274,7 +274,7 @@ export default function StaffSchedulePage() {
                       : "bg-transparent text-(--color-text-secondary)"
                   }`}
                 >
-                  Tháng
+                  Month
                 </button>
               </div>
 
@@ -293,7 +293,7 @@ export default function StaffSchedulePage() {
                   onClick={goToToday}
                   className="cursor-pointer rounded-lg border border-(--color-border-light) bg-white px-3 py-1.5 text-xs font-semibold text-(--color-text-secondary) transition hover:border-(--color-primary)/30 hover:bg-(--color-primary)/5 hover:text-(--color-primary)"
                 >
-                  Hôm nay
+                  Today
                 </button>
                 <button
                   title="Next"
@@ -313,7 +313,7 @@ export default function StaffSchedulePage() {
                   className="hidden cursor-pointer items-center gap-2 rounded-xl border-none bg-(--color-primary) px-4 py-2 text-xs font-bold text-white shadow-sm transition hover:opacity-90 md:flex"
                 >
                   <i className="fa-solid fa-plus"></i>
-                  Tạo ca mới
+                  Create shift
                 </button>
               )}
 
@@ -373,7 +373,7 @@ export default function StaffSchedulePage() {
           {/* FAB for mobile manager */}
           {isManager && (
             <button
-              title="Tạo ca mới"
+              title="Create shift"
               type="button"
               onClick={() => { setCreateDate(undefined); setCreateOpen(true); }}
               className="fixed right-4 bottom-6 z-30 flex h-14 w-14 cursor-pointer items-center justify-center rounded-full border-none bg-(--color-primary) text-white shadow-xl transition hover:opacity-90 md:hidden"
diff --git a/components/molecules/cards/ShiftCard.tsx b/components/molecules/cards/ShiftCard.tsx
index 7394295..fead3f8 100644
--- a/components/molecules/cards/ShiftCard.tsx
+++ b/components/molecules/cards/ShiftCard.tsx
@@ -83,14 +83,14 @@ export default function ShiftCard({ shift, compact = false, onClick }: ShiftCard
             </p>
           </div>
           <span className={`shrink-0 rounded-full px-2.5 py-1 text-xs font-semibold ${s.badge}`}>
-            {registeredCount}/{shift.maxStaff} người
+            {registeredCount}/{shift.maxStaff} staff
           </span>
         </div>
 
         {registeredCount > 0 && (
           <div className="mt-3 border-t border-gray-100 pt-3">
             <p className="mb-2 text-[10px] font-semibold tracking-wider text-(--color-text-muted) uppercase">
-              Nhân viên đăng ký
+              Registered staff
             </p>
             <div className="flex flex-wrap gap-1.5">
               {shift.registeredStaff!.map((staff) => (
diff --git a/components/molecules/search-bar/SearchBar.tsx b/components/molecules/search-bar/SearchBar.tsx
index 6766e05..431e89f 100644
--- a/components/molecules/search-bar/SearchBar.tsx
+++ b/components/molecules/search-bar/SearchBar.tsx
@@ -6,7 +6,7 @@ export default function SearchBar({
   value,
   onChange,
   onClear,
-  placeholder = "Tìm kiếm...",
+  placeholder = "Search...",
   className = "",
 }: SearchBarProps) {
   return (
@@ -17,14 +17,14 @@ export default function SearchBar({
         value={value}
         onChange={(e) => onChange(e.target.value)}
         placeholder={placeholder}
-        aria-label="Tìm kiếm món ăn"
+        aria-label="Search items"
         className="bg-card text-foreground border-border placeholder:text-muted-foreground focus:border-primary focus:ring-primary focus:ring-opacity-20 w-full rounded-xl border py-2 pr-9 pl-9 text-sm transition-all duration-150 outline-none focus:ring-2"
       />
       {value && (
         <button
           onClick={onClear}
-          title="Xóa tìm kiếm"
-          aria-label="Xóa tìm kiếm"
+          title="Clear search"
+          aria-label="Clear search"
           className="absolute top-1/2 right-3 -translate-y-1/2 cursor-pointer border-none bg-transparent p-0 text-(--color-text-muted) transition-colors duration-150 hover:text-(--color-primary)"
         >
           <i className="fa-solid fa-xmark text-sm"></i>
diff --git a/components/organisms/manager/DeleteConfirm.tsx b/components/organisms/manager/DeleteConfirm.tsx
index 25ed7e2..f44337f 100644
--- a/components/organisms/manager/DeleteConfirm.tsx
+++ b/components/organisms/manager/DeleteConfirm.tsx
@@ -17,9 +17,9 @@ export default function DeleteConfirm({
           <div className="flex h-12 w-12 items-center justify-center rounded-full bg-red-100">
             <i className="fa-solid fa-trash-can text-xl text-red-500"></i>
           </div>
-          <h3 className="text-foreground text-base font-bold">Xóa "{name}"?</h3>
+          <h3 className="text-foreground text-base font-bold">Delete "{name}"?</h3>
           <p className="text-sm text-(--color-text-muted)">
-            Hành động này không thể hoàn tác.
+            This action cannot be undone.
           </p>
         </div>
         <div className="flex gap-3">
@@ -27,13 +27,13 @@ export default function DeleteConfirm({
             onClick={onClose}
             className="flex-1 cursor-pointer rounded-xl border border-(--color-border) bg-white px-4 py-2.5 text-sm font-medium text-(--color-text-secondary) transition hover:bg-(--color-border-light)"
           >
-            Hủy
+            Cancel
           </button>
           <button
             onClick={onConfirm}
             className="flex-1 cursor-pointer rounded-xl border-none bg-red-500 px-4 py-2.5 text-sm font-semibold text-white transition hover:bg-red-600 active:scale-95"
           >
-            Xóa
+            Delete
           </button>
         </div>
       </div>
diff --git a/components/organisms/manager/ProductModal.tsx b/components/organisms/manager/ProductModal.tsx
index e552a44..7b15f28 100644
--- a/components/organisms/manager/ProductModal.tsx
+++ b/components/organisms/manager/ProductModal.tsx
@@ -39,7 +39,7 @@ export default function ProductModal({
       });
 
       if (!res.ok) {
-        throw new Error("Upload ảnh thất bại.");
+        throw new Error("Image upload failed.");
       }
 
       const raw = await res.text();
@@ -54,12 +54,12 @@ export default function ProductModal({
       }
 
       if (!filename) {
-        throw new Error("Không nhận được filename ảnh từ server.");
+        throw new Error("No image filename received from server.");
       }
 
       setForm((prev) => ({ ...prev, imageUrl: filename }));
     } catch (error: any) {
-      setUploadError(error?.message || "Không thể upload ảnh.");
+      setUploadError(error?.message || "Unable to upload image.");
     } finally {
       setUploading(false);
     }
@@ -93,11 +93,11 @@ export default function ProductModal({
       <div className="w-full max-w-lg rounded-2xl bg-white shadow-2xl">
         <div className="flex items-center justify-between border-b border-(--color-border-light) px-6 py-4">
           <h2 className="text-foreground text-lg font-bold">
-            {isEdit ? "Chỉnh sửa món" : "Thêm món mới"}
+            {isEdit ? "Edit item" : "Add new item"}
           </h2>
           <button
             onClick={onClose}
-            title="Đóng"
+            title="Close"
             className="flex h-8 w-8 cursor-pointer items-center justify-center rounded-full border-none bg-transparent text-(--color-text-muted) transition-colors hover:bg-(--color-border-light) hover:text-(--color-primary)"
           >
             <i className="fa-solid fa-xmark"></i>
@@ -107,7 +107,7 @@ export default function ProductModal({
         <form onSubmit={handleSubmit} className="space-y-4 px-6 py-5">
           <div>
             <label className="mb-1 block text-sm font-medium text-(--color-text-secondary)">
-              Tên món <span className="text-red-500">*</span>
+              Item name <span className="text-red-500">*</span>
             </label>
             <input
               required
@@ -115,13 +115,13 @@ export default function ProductModal({
               value={form.name}
               onChange={(e) => setForm({ ...form, name: e.target.value })}
               className={inputCls}
-              placeholder="Ví dụ: Cà Phê Đen"
+              placeholder="e.g. Black Coffee"
             />
           </div>
 
           <div>
             <label className="mb-1 block text-sm font-medium text-(--color-text-secondary)">
-              Giá (đ) <span className="text-red-500">*</span>
+              Price (₫) <span className="text-red-500">*</span>
             </label>
             <input
               required
@@ -139,7 +139,7 @@ export default function ProductModal({
 
           <div>
             <label className="mb-1 block text-sm font-medium text-(--color-text-secondary)">
-              Ảnh món
+              Item image
             </label>
 
             <div className="space-y-2">
@@ -154,7 +154,7 @@ export default function ProductModal({
               {uploading && (
                 <p className="text-sm text-(--color-text-muted)">
                   <i className="fa-solid fa-spinner mr-1 animate-spin"></i>
-                  Đang upload ảnh...
+                  Uploading image...
                 </p>
               )}
             </div>
@@ -163,7 +163,7 @@ export default function ProductModal({
               <div className="mt-2">
                 <img
                   src={previewUrl}
-                  alt="Preview ảnh món"
+                  alt="Item image preview"
                   className="h-24 w-24 rounded-lg border border-(--color-border-light) object-cover"
                 />
               </div>
@@ -179,7 +179,7 @@ export default function ProductModal({
 
           <div>
             <label className="mb-1 block text-sm font-medium text-(--color-text-secondary)">
-              Mô tả
+              Description
             </label>
             <textarea
               rows={3}
@@ -188,19 +188,19 @@ export default function ProductModal({
                 setForm({ ...form, description: e.target.value })
               }
               className={`${inputCls} resize-none`}
-              placeholder="Mô tả ngắn về món..."
+              placeholder="Short description..."
             />
           </div>
 
           <div className="bg-background flex items-center justify-between rounded-xl border border-(--color-border-light) px-4 py-3">
             <div>
-              <p className="text-foreground text-sm font-medium">Trạng thái</p>
+              <p className="text-foreground text-sm font-medium">Status</p>
               <p className="text-xs text-(--color-text-muted)">
-                {form.available ? "Còn hàng" : "Tạm hết"}
+                {form.available ? "In stock" : "Out of stock"}
               </p>
             </div>
             <button
-              title="Chuyển trạng thái"
+              title="Toggle status"
               type="button"
               onClick={() => setForm({ ...form, available: !form.available })}
               className={`relative h-6 w-11 cursor-pointer rounded-full border-none transition-colors duration-200 ${
@@ -221,14 +221,14 @@ export default function ProductModal({
               onClick={onClose}
               className="flex-1 cursor-pointer rounded-xl border border-(--color-border) bg-white px-4 py-2.5 text-sm font-medium text-(--color-text-secondary) transition hover:bg-(--color-border-light)"
             >
-              Hủy
+              Cancel
             </button>
             <button
               type="submit"
               disabled={uploading}
               className="flex-1 cursor-pointer rounded-xl border-none bg-(--color-primary) px-4 py-2.5 text-sm font-semibold text-white transition hover:bg-(--color-primary-dark) active:scale-95 disabled:opacity-60"
             >
-              {isEdit ? "Lưu thay đổi" : "Thêm món"}
+              {isEdit ? "Save changes" : "Add item"}
             </button>
           </div>
         </form>
diff --git a/components/organisms/manager/ProductsTab.tsx b/components/organisms/manager/ProductsTab.tsx
index bc1ac0c..92b2f9e 100644
--- a/components/organisms/manager/ProductsTab.tsx
+++ b/components/organisms/manager/ProductsTab.tsx
@@ -59,12 +59,12 @@ export default function ProductsTab() {
             type="text"
             value={search}
             onChange={(e) => setSearch(e.target.value)}
-            placeholder="Tìm kiếm món..."
+            placeholder="Search items..."
             className="text-foreground w-full rounded-xl border border-(--color-border) bg-white py-2 pr-9 pl-9 text-sm transition outline-none focus:border-(--color-primary) focus:ring-2 focus:ring-(--color-primary)/20"
           />
           {search && (
             <button
-              title="Xóa tìm kiếm"
+              title="Clear search"
               onClick={() => setSearch("")}
               className="absolute top-1/2 right-3 -translate-y-1/2 cursor-pointer border-none bg-transparent text-(--color-text-muted) hover:text-(--color-primary)"
             >
@@ -81,26 +81,26 @@ export default function ProductsTab() {
             )
           }
           className="text-foreground cursor-pointer rounded-xl border border-(--color-border) bg-white px-3 py-2 text-sm transition outline-none focus:border-(--color-primary)"
-          title="Lọc theo trạng thái"
+          title="Filter by status"
         >
-          <option value="all">Tất cả trạng thái</option>
-          <option value="available">Còn hàng</option>
-          <option value="unavailable">Tạm hết</option>
+          <option value="all">All statuses</option>
+          <option value="available">In stock</option>
+          <option value="unavailable">Out of stock</option>
         </select>
 
         <button
-          title="Thêm món"
+          title="Add item"
           onClick={() => setModalProduct("new")}
           className="flex cursor-pointer items-center gap-2 rounded-xl border-none bg-(--color-primary) px-4 py-2 text-sm font-semibold text-white transition hover:bg-(--color-primary-dark) active:scale-95"
         >
           <i className="fa-solid fa-plus"></i>
-          <span className="hidden sm:inline">Thêm món</span>
+          <span className="hidden sm:inline">Add item</span>
         </button>
       </div>
 
       <p className="text-sm text-(--color-text-muted)">
-        Hiển thị <strong className="text-foreground">{filtered.length}</strong>{" "}
-        / {products.length} món
+        Showing <strong className="text-foreground">{filtered.length}</strong>{" "}
+        / {products.length} items
       </p>
 
       {/* Table */}
@@ -109,19 +109,19 @@ export default function ProductsTab() {
           <thead className="bg-background">
             <tr>
               <th className="px-4 py-3 text-left font-semibold text-(--color-text-secondary)">
-                Ảnh
+                Image
               </th>
               <th className="px-4 py-3 text-left font-semibold text-(--color-text-secondary)">
-                Tên món
+                Item name
               </th>
               <th className="px-4 py-3 text-right font-semibold text-(--color-text-secondary)">
-                Giá
+                Price
               </th>
               <th className="px-4 py-3 text-center font-semibold text-(--color-text-secondary)">
-                Trạng thái
+                Status
               </th>
               <th className="px-4 py-3 text-center font-semibold text-(--color-text-secondary)">
-                Thao tác
+                Actions
               </th>
             </tr>
           </thead>
@@ -133,7 +133,7 @@ export default function ProductsTab() {
                   className="py-12 text-center text-(--color-text-muted)"
                 >
                   <i className="fa-solid fa-mug-hot mb-2 block text-3xl opacity-30"></i>
-                  <span className="ml-3">Không tìm thấy món nào</span>
+                  <span className="ml-3">No items found</span>
                 </td>
               </tr>
             ) : (
@@ -165,7 +165,7 @@ export default function ProductsTab() {
                   <td className="px-4 py-3 text-center">
                     <button
                       onClick={() => toggleProductAvailability(p)}
-                      title="Nhấn để đổi trạng thái"
+                      title="Click to toggle status"
                       className="cursor-pointer border-none bg-transparent"
                     >
                       <StatusBadge available={p.available ?? true} />
@@ -175,14 +175,14 @@ export default function ProductsTab() {
                     <div className="flex items-center justify-center gap-1.5">
                       <button
                         onClick={() => setModalProduct(p)}
-                        title="Chỉnh sửa"
+                        title="Edit"
                         className="flex h-8 w-8 cursor-pointer items-center justify-center rounded-lg border border-(--color-border-light) bg-transparent text-(--color-text-muted) transition hover:border-(--color-primary-light) hover:text-(--color-primary)"
                       >
                         <i className="fa-solid fa-pen text-xs"></i>
                       </button>
                       <button
                         onClick={() => setDeleteTarget(p)}
-                        title="Xóa"
+                        title="Delete"
                         className="flex h-8 w-8 cursor-pointer items-center justify-center rounded-lg border border-transparent bg-transparent text-(--color-text-muted) transition hover:border-red-200 hover:bg-red-50 hover:text-red-500"
                       >
                         <i className="fa-solid fa-trash text-xs"></i>
diff --git a/components/organisms/navigation/CategorySidebar.tsx b/components/organisms/navigation/CategorySidebar.tsx
index be89f72..8e93aa7 100644
--- a/components/organisms/navigation/CategorySidebar.tsx
+++ b/components/organisms/navigation/CategorySidebar.tsx
@@ -37,14 +37,14 @@ export default function CategorySidebar({
           className={`text-xs font-bold tracking-widest whitespace-nowrap text-(--color-text-muted) uppercase ${isOpen ? "block" : "hidden"} xl:block`}
         >
           <i className="fa-solid fa-utensils mr-2 text-(--color-primary)"></i>
-          Thực Đơn
+          Menu
         </span>
 
         {/* Toggle button — hidden on xl+ (sidebar is always expanded there) */}
         <button
           onClick={onToggle}
-          title={isOpen ? "Thu gọn menu" : "Mở rộng menu"}
-          aria-label={isOpen ? "Thu gọn menu" : "Mở rộng menu"}
+          title={isOpen ? "Collapse menu" : "Expand menu"}
+          aria-label={isOpen ? "Collapse menu" : "Expand menu"}
           className="flex h-8 w-8 shrink-0 cursor-pointer items-center justify-center rounded-lg border-none bg-transparent text-(--color-text-muted) transition-colors duration-150 hover:bg-(--color-border-light) hover:text-(--color-primary) xl:hidden"
         >
           <i
diff --git a/components/organisms/shift-schedule/MobileShiftView.tsx b/components/organisms/shift-schedule/MobileShiftView.tsx
index 8e8f812..3e78b0f 100644
--- a/components/organisms/shift-schedule/MobileShiftView.tsx
+++ b/components/organisms/shift-schedule/MobileShiftView.tsx
@@ -144,15 +144,15 @@ export default function MobileShiftView({ onShiftClick }: MobileShiftViewProps)
               ? "bg-(--color-primary)/10 text-(--color-primary)"
               : "bg-gray-100 text-(--color-text-muted)"
           }`}>
-            {selectedShifts.length} ca làm
+            {selectedShifts.length} shifts
           </span>
         </div>
 
         {selectedShifts.length === 0 ? (
           <div className="rounded-2xl border border-dashed border-(--color-border-light) py-10 text-center">
             <i className="fa-regular fa-calendar-xmark mb-3 text-3xl text-gray-200"></i>
-            <p className="text-sm font-medium text-(--color-text-muted)">Không có ca làm</p>
-            <p className="mt-0.5 text-xs text-(--color-text-muted)">Chưa có ca nào được tạo hôm này</p>
+            <p className="text-sm font-medium text-(--color-text-muted)">No shifts</p>
+            <p className="mt-0.5 text-xs text-(--color-text-muted)">No shifts created for this day</p>
           </div>
         ) : (
           <div className="space-y-2.5">
diff --git a/components/organisms/shift-schedule/MonthlyCalendar.tsx b/components/organisms/shift-schedule/MonthlyCalendar.tsx
index 9eb18d1..7d62970 100644
--- a/components/organisms/shift-schedule/MonthlyCalendar.tsx
+++ b/components/organisms/shift-schedule/MonthlyCalendar.tsx
@@ -102,7 +102,7 @@ export default function MonthlyCalendar({ onShiftClick, onDateSelect }: MonthlyC
                 <div className="mt-1.5 space-y-1">
                   <span className="inline-flex items-center gap-1 rounded-full bg-(--color-primary)/10 px-1.5 py-0.5 text-[10px] font-semibold text-(--color-primary)">
                     <i className="fa-solid fa-clock text-[8px]"></i>
-                    {shiftCount} ca
+                    {shiftCount} shifts
                   </span>
                 </div>
               )}
@@ -110,7 +110,7 @@ export default function MonthlyCalendar({ onShiftClick, onDateSelect }: MonthlyC
               {/* Add indicator for manager */}
               {shiftCount === 0 && onDateSelect && (
                 <p className="mt-1 text-[10px] text-(--color-text-muted) opacity-0 transition group-hover:opacity-100">
-                  + Thêm ca
+                  + Add shift
                 </p>
               )}
             </button>
diff --git a/components/organisms/shift-schedule/ShiftCreateModal.tsx b/components/organisms/shift-schedule/ShiftCreateModal.tsx
index 0ee80b9..24d04b7 100644
--- a/components/organisms/shift-schedule/ShiftCreateModal.tsx
+++ b/components/organisms/shift-schedule/ShiftCreateModal.tsx
@@ -185,7 +185,7 @@ export default function ShiftCreateModal({
           {/* Department */}
           <div>
             <label className="mb-1 block text-xs font-semibold text-(--color-text-secondary)">
-              Bộ phận
+              Department
             </label>
             <select
               title="Department"
@@ -205,7 +205,7 @@ export default function ShiftCreateModal({
           <div className="grid grid-cols-2 gap-3">
             <div>
               <label className="mb-1 block text-xs font-semibold text-(--color-text-secondary)">
-                Số nhân viên tối đa
+                Max staff
               </label>
               <input
                 title="Max Staff"
@@ -219,7 +219,7 @@ export default function ShiftCreateModal({
             </div>
             <div>
               <label className="mb-1 block text-xs font-semibold text-(--color-text-secondary)">
-                Lương ca (VND)
+                Shift wage (VND)
               </label>
               <input
                 title="Wage"
@@ -248,14 +248,14 @@ export default function ShiftCreateModal({
               className="flex-1 cursor-pointer rounded-xl border-none bg-(--color-primary) px-4 py-2.5 text-sm font-semibold text-white transition hover:opacity-90"
             >
               <i className="fa-solid fa-plus mr-2"></i>
-              Tạo ca làm
+              Create shift
             </button>
             <button
               type="button"
               onClick={onClose}
               className="cursor-pointer rounded-xl border border-(--color-border-light) bg-transparent px-4 py-2.5 text-sm font-medium text-(--color-text-secondary) transition hover:bg-gray-50"
             >
-              Hủy
+              Cancel
             </button>
           </div>
         </form>
diff --git a/components/organisms/shift-schedule/ShiftDetailModal.tsx b/components/organisms/shift-schedule/ShiftDetailModal.tsx
index 249694c..b985d01 100644
--- a/components/organisms/shift-schedule/ShiftDetailModal.tsx
+++ b/components/organisms/shift-schedule/ShiftDetailModal.tsx
@@ -41,10 +41,10 @@ export default function ShiftDetailModal({
     setSuccess(null);
     const result = await registerShift(shift.id, user.id, user.name);
     if (result.success) {
-      setSuccess("Đăng ký ca thành công!");
+      setSuccess("Shift registered successfully!");
       setTimeout(onClose, 1200);
     } else {
-      setError(result.error ?? "Có lỗi xảy ra.");
+      setError(result.error ?? "An error occurred.");
     }
   };
 
@@ -52,13 +52,13 @@ export default function ShiftDetailModal({
     if (!user) return;
     setError(null);
     unregisterShift(shift.id, user.id);
-    setSuccess("Đã hủy đăng ký ca.");
+    setSuccess("Shift registration cancelled.");
     setTimeout(onClose, 1200);
   };
 
   const handleManagerUnregister = (staffId: string) => {
     unregisterShift(shift.id, staffId);
-    setSuccess("Đã xóa nhân viên khỏi ca.");
+    setSuccess("Staff removed from shift.");
   };
 
   const handleDelete = async () => {
@@ -67,10 +67,10 @@ export default function ShiftDetailModal({
   };
 
   const statusLabel = {
-    available: "Còn trống",
-    registered: "Đã đăng ký",
-    approved_leave: "Nghỉ phép",
-    absent: "Vắng mặt",
+    available: "Available",
+    registered: "Registered",
+    approved_leave: "On leave",
+    absent: "Absent",
   };
 
   const statusColor = {
@@ -93,7 +93,7 @@ export default function ShiftDetailModal({
             {/* {dept && <i className={`${dept.icon} text-(--color-primary)`}></i>} */}
             <div>
               <h2 className="text-foreground text-base font-bold">
-                Chi tiết ca làm
+                Shift Details
               </h2>
               {/* <p className="text-xs text-(--color-text-muted)">{dept?.name}</p> */}
             </div>
@@ -123,7 +123,7 @@ export default function ShiftDetailModal({
           <div className="grid grid-cols-2 gap-3">
             <div className="rounded-xl bg-gray-50 p-3">
               <p className="text-[10px] font-semibold text-(--color-text-muted) uppercase">
-                Ngày
+                Date
               </p>
               <p className="text-foreground mt-1 text-sm font-bold">
                 {parseShiftDate(shift.date as Date | string | undefined)?.toLocaleDateString(
@@ -139,7 +139,7 @@ export default function ShiftDetailModal({
             </div>
             <div className="rounded-xl bg-gray-50 p-3">
               <p className="text-[10px] font-semibold text-(--color-text-muted) uppercase">
-                Giờ làm
+                Working hours
               </p>
               <p className="text-foreground mt-1 text-sm font-bold">
                 {shift.startTime} – {shift.endTime}
@@ -147,13 +147,13 @@ export default function ShiftDetailModal({
             </div>
             <div className="rounded-xl bg-gray-50 p-3">
               <p className="text-[10px] font-semibold text-(--color-text-muted) uppercase">
-                Thời lượng
+                Duration
               </p>
               <p className="text-foreground mt-1 text-sm font-bold">{""} giờ</p>
             </div>
             <div className="rounded-xl bg-gray-50 p-3">
               <p className="text-[10px] font-semibold text-(--color-text-muted) uppercase">
-                Lương ca
+                Shift wage
               </p>
               <p className="mt-1 text-sm font-bold text-(--color-primary)">
                 {(shift.wage ?? 0).toLocaleString("vi-VN")} VND
@@ -164,12 +164,12 @@ export default function ShiftDetailModal({
           {/* Registered staff */}
           <div>
             <p className="mb-2 text-xs font-semibold text-(--color-text-secondary)">
-              Nhân viên đã đăng ký ({registeredStaff.length}/
+              Registered staff ({registeredStaff.length}/
               {shift.maxStaff})
             </p>
             {registeredStaff.length === 0 ? (
               <p className="text-xs text-(--color-text-muted) italic">
-                Chưa có ai đăng ký
+                No staff registered yet
               </p>
             ) : (
               <div className="space-y-2">
@@ -193,7 +193,7 @@ export default function ShiftDetailModal({
                         className="cursor-pointer rounded-lg border-none bg-transparent px-2 py-1 text-xs text-red-500 transition hover:bg-red-50"
                       >
                         <i className="fa-solid fa-user-minus mr-1"></i>
-                        Xóa
+                        Remove
                       </button>
                     )}
                   </div>
@@ -226,7 +226,7 @@ export default function ShiftDetailModal({
               className="flex-1 cursor-pointer rounded-xl border-none bg-(--color-primary) px-4 py-2.5 text-sm font-semibold text-white transition hover:opacity-90"
             >
               <i className="fa-solid fa-calendar-plus mr-2"></i>
-              Đăng ký ca
+              Register
             </button>
           )}
           {isRegistered && (
@@ -236,7 +236,7 @@ export default function ShiftDetailModal({
               className="flex-1 cursor-pointer rounded-xl border border-red-200 bg-transparent px-4 py-2.5 text-sm font-semibold text-red-600 transition hover:bg-red-50"
             >
               <i className="fa-solid fa-calendar-minus mr-2"></i>
-              Hủy đăng ký
+              Unregister
             </button>
           )}
           {isManager && (
@@ -246,7 +246,7 @@ export default function ShiftDetailModal({
               className="cursor-pointer rounded-xl border border-red-200 bg-transparent px-4 py-2.5 text-sm font-semibold text-red-600 transition hover:bg-red-50"
             >
               <i className="fa-solid fa-trash mr-2"></i>
-              Xóa ca
+              Delete shift
             </button>
           )}
           <button
@@ -254,7 +254,7 @@ export default function ShiftDetailModal({
             onClick={onClose}
             className="cursor-pointer rounded-xl border border-(--color-border-light) bg-transparent px-4 py-2.5 text-sm font-medium text-(--color-text-secondary) transition hover:bg-gray-50"
           >
-            Đóng
+            Close
           </button>
         </div>
       </div>
diff --git a/components/organisms/shift-schedule/WeeklySchedule.tsx b/components/organisms/shift-schedule/WeeklySchedule.tsx
index 4ff5715..61694e2 100644
--- a/components/organisms/shift-schedule/WeeklySchedule.tsx
+++ b/components/organisms/shift-schedule/WeeklySchedule.tsx
@@ -116,14 +116,14 @@ export default function WeeklySchedule({
               {formatDateShort(new Date(selectedDateRef))}
             </h3>
             <span className="rounded-full bg-(--color-primary)/10 px-2.5 py-1 text-xs font-semibold text-(--color-primary)">
-              {dayShifts.length} ca
+              {dayShifts.length} shifts
             </span>
           </div>
 
           {dayShifts.length === 0 && !onCreateShift ? (
             <div className="rounded-2xl border border-dashed border-(--color-border-light) py-10 text-center">
               <i className="fa-regular fa-calendar-xmark mb-2 text-3xl text-gray-200"></i>
-              <p className="text-sm text-(--color-text-muted)">Không có ca làm hôm nay</p>
+              <p className="text-sm text-(--color-text-muted)">No shifts today</p>
             </div>
           ) : (
             <div className="space-y-2.5">
@@ -137,7 +137,7 @@ export default function WeeklySchedule({
                   className="flex w-full cursor-pointer items-center justify-center gap-2 rounded-2xl border border-dashed border-(--color-border-light) bg-transparent py-3 text-sm font-medium text-(--color-text-muted) transition hover:border-(--color-primary) hover:text-(--color-primary)"
                 >
                   <i className="fa-solid fa-plus"></i>
-                  Thêm ca làm
+                  Add shift
                 </button>
               )}
             </div>
@@ -156,7 +156,7 @@ export default function WeeklySchedule({
           <thead>
             <tr>
               <th className="w-28 border-r border-b border-(--color-border-light) bg-gray-50/80 px-4 py-3 text-left text-[11px] font-semibold tracking-wider text-(--color-text-muted) uppercase">
-                Bộ phận
+                Department
               </th>
               {weekDates.map((date, i) => {
                 const today = isToday(new Date(date));
@@ -221,7 +221,7 @@ export default function WeeklySchedule({
                             className="mt-auto flex cursor-pointer items-center justify-center gap-1 rounded-lg border border-dashed border-gray-200 bg-transparent py-1.5 text-[10px] font-medium text-gray-300 transition hover:border-(--color-primary)/50 hover:text-(--color-primary)"
                           >
                             <i className="fa-solid fa-plus"></i>
-                            Thêm
+                            Add
                           </button>
                         )}
                       </div>
diff --git a/layouts/header.tsx b/layouts/header.tsx
index 3599242..96445ec 100644
--- a/layouts/header.tsx
+++ b/layouts/header.tsx
@@ -47,7 +47,7 @@ export default function Header() {
           <div className="relative h-10 w-10 shrink-0 md:h-11 md:w-11">
             <Image
               src={SHOP_INFO.logo}
-              alt={`Logo ${SHOP_INFO.name}`}
+              alt={`${SHOP_INFO.name} logo`}
               fill
               className="object-contain transition-transform duration-200 group-hover:scale-105"
               sizes="44px"