diff --git a/apps/business/src/components/AddCustomerModal.module.css b/apps/business/src/components/AddCustomerModal.module.css
index fe43099..03d018f 100644
--- a/apps/business/src/components/AddCustomerModal.module.css
+++ b/apps/business/src/components/AddCustomerModal.module.css
@@ -1,3 +1,7 @@
+.wideModal {
+  max-width: min(800px, calc(100vw - 32px));
+}
+
 .formGrid {
   display: grid;
   grid-template-columns: repeat(2, 1fr);
@@ -8,15 +12,29 @@
   grid-column: 1 / -1;
 }
 
-.hint {
-  margin-bottom: 12px;
-  font-size: 12px;
-  line-height: 1.45;
+.keyPoints {
+  margin: 0 0 14px;
+  padding-inline-start: 1.15em;
+  list-style: disc;
+  font-size: 12.5px;
+  line-height: 1.5;
   color: var(--text-secondary);
 }
 
-@media (max-width: 520px) {
+.keyPoints li {
+  white-space: nowrap;
+}
+
+.keyPoints li + li {
+  margin-top: 4px;
+}
+
+@media (max-width: 640px) {
   .formGrid {
     grid-template-columns: 1fr;
   }
+
+  .keyPoints li {
+    white-space: normal;
+  }
 }
diff --git a/apps/business/src/components/AddCustomerModal.tsx b/apps/business/src/components/AddCustomerModal.tsx
index 1c290a0..d3bdcd5 100644
--- a/apps/business/src/components/AddCustomerModal.tsx
+++ b/apps/business/src/components/AddCustomerModal.tsx
@@ -28,6 +28,8 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
   const [closing, setClosing] = useState(false)
   const [firstName, setFirstName] = useState('')
   const [lastName, setLastName] = useState('')
+  const [firstNameEn, setFirstNameEn] = useState('')
+  const [lastNameEn, setLastNameEn] = useState('')
   const [cellNumber, setCellNumber] = useState('')
   const [password, setPassword] = useState('')
   const [passwordConfirm, setPasswordConfirm] = useState('')
@@ -40,6 +42,8 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
       setClosing(false)
       setFirstName('')
       setLastName('')
+      setFirstNameEn('')
+      setLastNameEn('')
       setCellNumber('')
       setPassword('')
       setPasswordConfirm('')
@@ -86,6 +90,16 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
       }
     }
 
+    const trimmedFirstEn = firstNameEn.trim()
+    const trimmedLastEn = lastNameEn.trim()
+    if (
+      (trimmedFirstEn && trimmedFirstEn.length < 2) ||
+      (trimmedLastEn && trimmedLastEn.length < 2)
+    ) {
+      setError(t('customers.addModal.errorNameEnLength'))
+      return
+    }
+
     setIsSubmitting(true)
     setError('')
     try {
@@ -93,6 +107,8 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
         cellNumber: normalizedCell,
         firstName: firstName.trim(),
         lastName: lastName.trim(),
+        ...(trimmedFirstEn ? { firstNameEn: trimmedFirstEn } : {}),
+        ...(trimmedLastEn ? { lastNameEn: trimmedLastEn } : {}),
         ...(trimmedPassword ? { password: trimmedPassword } : {}),
       })
       onCreated({
@@ -119,7 +135,7 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
       onClick={onClose}
     >
       <div
-        className={`${modalStyles.modal} ${closing ? modalStyles.modalOut : modalStyles.modalIn}`}
+        className={`${modalStyles.modal} ${formStyles.wideModal} ${closing ? modalStyles.modalOut : modalStyles.modalIn}`}
         onClick={(e) => e.stopPropagation()}
         role="dialog"
         aria-modal="true"
@@ -132,7 +148,6 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
             <h3 id="add-customer-title" className={modalStyles.title}>
               {t('customers.addModal.title')}
             </h3>
-            <p className={modalStyles.subtitle}>{t('customers.addModal.subtitle')}</p>
           </div>
           <button
             type="button"
@@ -145,29 +160,58 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
         </div>
 
         <div className={modalStyles.body}>
-          <p className={formStyles.hint}>{t('customers.addModal.hint')}</p>
+          <ul className={formStyles.keyPoints}>
+            <li>{t('customers.addModal.pointCreate')}</li>
+            <li>{t('customers.addModal.pointPassword')}</li>
+          </ul>
 
           {error && <p className={modalStyles.errorText}>{error}</p>}
 
           <div className={formStyles.formGrid}>
             <div className={modalStyles.field}>
-              <label htmlFor="add-customer-first-name">{t('customers.addModal.firstName')}</label>
+              <label htmlFor="add-customer-first-name">{t('customers.addModal.firstNameFa')}</label>
               <input
                 id="add-customer-first-name"
                 value={firstName}
                 onChange={(e) => setFirstName(e.target.value)}
                 disabled={isSubmitting}
-                dir={isFa ? 'rtl' : 'ltr'}
+                dir="rtl"
+                lang="fa"
+                className="faText"
               />
             </div>
             <div className={modalStyles.field}>
-              <label htmlFor="add-customer-last-name">{t('customers.addModal.lastName')}</label>
+              <label htmlFor="add-customer-last-name">{t('customers.addModal.lastNameFa')}</label>
               <input
                 id="add-customer-last-name"
                 value={lastName}
                 onChange={(e) => setLastName(e.target.value)}
                 disabled={isSubmitting}
-                dir={isFa ? 'rtl' : 'ltr'}
+                dir="rtl"
+                lang="fa"
+                className="faText"
+              />
+            </div>
+            <div className={modalStyles.field}>
+              <label htmlFor="add-customer-first-name-en">{t('customers.addModal.firstNameEn')}</label>
+              <input
+                id="add-customer-first-name-en"
+                value={firstNameEn}
+                onChange={(e) => setFirstNameEn(e.target.value)}
+                disabled={isSubmitting}
+                dir="ltr"
+                lang="en"
+              />
+            </div>
+            <div className={modalStyles.field}>
+              <label htmlFor="add-customer-last-name-en">{t('customers.addModal.lastNameEn')}</label>
+              <input
+                id="add-customer-last-name-en"
+                value={lastNameEn}
+                onChange={(e) => setLastNameEn(e.target.value)}
+                disabled={isSubmitting}
+                dir="ltr"
+                lang="en"
               />
             </div>
             <div className={`${modalStyles.field} ${formStyles.formFull}`}>
@@ -233,8 +277,7 @@ export function AddCustomerModal({ open, onClose, onCreated }: AddCustomerModalP
           </div>
         </div>
       </div>
-    </div>
-  ,
-  document.body,
+    </div>,
+    document.body,
   )
 }
diff --git a/apps/business/src/components/InvoiceForm.module.css b/apps/business/src/components/InvoiceForm.module.css
index d63513d..b9d72c1 100644
--- a/apps/business/src/components/InvoiceForm.module.css
+++ b/apps/business/src/components/InvoiceForm.module.css
@@ -192,6 +192,10 @@
   text-decoration: underline;
 }
 
+:global([dir='rtl']) .backLink svg {
+  transform: scaleX(-1);
+}
+
 .section {
   padding: 16px;
   background: var(--glass-bg);
diff --git a/apps/business/src/i18n/messages.ts b/apps/business/src/i18n/messages.ts
index 19caca9..f903f7b 100644
--- a/apps/business/src/i18n/messages.ts
+++ b/apps/business/src/i18n/messages.ts
@@ -833,8 +833,16 @@ const en = {
     'Creates a verified customer account or links an existing user to your business.',
   'customers.addModal.hint':
     'Password is required only for new accounts. Existing users are added as verified customers.',
+  'customers.addModal.pointCreate':
+    'Creates a verified customer account or links an existing user to your business.',
+  'customers.addModal.pointPassword':
+    'Password is required only for new accounts. Existing users are added as verified customers.',
   'customers.addModal.firstName': 'First name',
   'customers.addModal.lastName': 'Last name',
+  'customers.addModal.firstNameFa': 'First name (FA)',
+  'customers.addModal.lastNameFa': 'Last name (FA)',
+  'customers.addModal.firstNameEn': 'First name (EN)',
+  'customers.addModal.lastNameEn': 'Last name (EN)',
   'customers.addModal.cell': 'Cell number',
   'customers.addModal.cellPlaceholder': '0912...',
   'customers.addModal.password': 'Password (new users)',
@@ -846,6 +854,7 @@ const en = {
   'customers.addModal.error': 'Unable to add customer.',
   'customers.addModal.errorPasswordMatch': 'Passwords do not match.',
   'customers.addModal.errorPasswordLength': 'Password must be at least 8 characters.',
+  'customers.addModal.errorNameEnLength': 'English names must be at least 2 characters.',
   'customers.access.title': 'Change access',
   'customers.access.subtitle': 'Choose customer or manager access for {name}.',
   'customers.access.customer': 'Customer',
@@ -2434,8 +2443,16 @@ const fa: Record<MessageKey, string> = {
     'یک حساب تأییدشده مشتری می‌سازد یا کاربر موجود را به کسب‌وکار شما وصل می‌کند.',
   'customers.addModal.hint':
     'رمز عبور فقط برای حساب‌های جدید لازم است. کاربران موجود به‌عنوان مشتری تأییدشده اضافه می‌شوند.',
+  'customers.addModal.pointCreate':
+    'یک حساب تأییدشده مشتری می‌سازد یا کاربر موجود را به کسب‌وکار شما وصل می‌کند.',
+  'customers.addModal.pointPassword':
+    'رمز عبور فقط برای حساب‌های جدید لازم است. کاربران موجود به‌عنوان مشتری تأییدشده اضافه می‌شوند.',
   'customers.addModal.firstName': 'نام',
   'customers.addModal.lastName': 'نام خانوادگی',
+  'customers.addModal.firstNameFa': 'نام (فارسی)',
+  'customers.addModal.lastNameFa': 'نام خانوادگی (فارسی)',
+  'customers.addModal.firstNameEn': 'نام (انگلیسی)',
+  'customers.addModal.lastNameEn': 'نام خانوادگی (انگلیسی)',
   'customers.addModal.cell': 'شماره موبایل',
   'customers.addModal.cellPlaceholder': '۰۹۱۲...',
   'customers.addModal.password': 'رمز عبور (کاربران جدید)',
@@ -2447,6 +2464,7 @@ const fa: Record<MessageKey, string> = {
   'customers.addModal.error': 'افزودن مشتری ممکن نشد.',
   'customers.addModal.errorPasswordMatch': 'رمزهای عبور یکسان نیستند.',
   'customers.addModal.errorPasswordLength': 'رمز عبور باید حداقل ۸ کاراکتر باشد.',
+  'customers.addModal.errorNameEnLength': 'نام انگلیسی باید حداقل ۲ کاراکتر باشد.',
   'customers.access.title': 'تغییر دسترسی',
   'customers.access.subtitle': 'دسترسی مشتری یا مدیر را برای {name} انتخاب کنید.',
   'customers.access.customer': 'مشتری',
diff --git a/apps/business/src/services/customerService.ts b/apps/business/src/services/customerService.ts
index 89971cd..c4974fe 100644
--- a/apps/business/src/services/customerService.ts
+++ b/apps/business/src/services/customerService.ts
@@ -76,6 +76,8 @@ export interface CreateCustomerPayload {
   cellNumber: string
   firstName: string
   lastName: string
+  firstNameEn?: string
+  lastNameEn?: string
   password?: string
   email?: string
 }
diff --git a/apps/super-admin/src/pages/PublicInvoicePage.module.css b/apps/super-admin/src/pages/PublicInvoicePage.module.css
index f43cf61..41b52cf 100644
--- a/apps/super-admin/src/pages/PublicInvoicePage.module.css
+++ b/apps/super-admin/src/pages/PublicInvoicePage.module.css
@@ -222,6 +222,7 @@
   font-weight: 600;
   color: var(--text-primary, #0f172a);
   white-space: nowrap;
+  font-variant-numeric: tabular-nums;
 }
 
 .priceWas {
@@ -257,12 +258,32 @@
 
 .keyPoints {
   margin: 0;
-  padding-left: 16px;
+  padding-inline-start: 16px;
   font-size: 12px;
   line-height: 1.45;
   color: var(--text-secondary, #475569);
 }
 
+.page[dir='rtl'] {
+  font-family: var(--font-ui, var(--font-en), var(--font-fa), sans-serif);
+}
+
+.page[dir='rtl'] .title,
+.page[dir='rtl'] .itemTitle,
+.page[dir='rtl'] .sectionTitle,
+.page[dir='rtl'] .accountBank,
+.page[dir='rtl'] .topText,
+.page[dir='rtl'] .keyPoints,
+.page[dir='rtl'] .meta {
+  font-family: var(--font-ui, var(--font-en), var(--font-fa), sans-serif);
+}
+
+.page[dir='rtl'] .itemPrice,
+.page[dir='rtl'] .totals strong,
+.page[dir='rtl'] .accountDetails {
+  font-variant-numeric: tabular-nums;
+}
+
 .accounts {
   display: flex;
   flex-direction: column;
diff --git a/apps/super-admin/src/pages/PublicInvoicePage.tsx b/apps/super-admin/src/pages/PublicInvoicePage.tsx
index aa41478..e06dd6b 100644
--- a/apps/super-admin/src/pages/PublicInvoicePage.tsx
+++ b/apps/super-admin/src/pages/PublicInvoicePage.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react'
+import { useEffect, useMemo, useState } from 'react'
 import { useParams } from 'react-router-dom'
 import { FileDown } from 'lucide-react'
 import meshkeeLogo from '../assets/meshkee-logo.png'
@@ -10,10 +10,65 @@ import type { PublicInvoice } from '../types/invoice'
 import { formatIrtPrice } from '../utils/irtPrice'
 import styles from './PublicInvoicePage.module.css'
 
-function formatDate(value: string) {
+type InvoiceLocale = 'en' | 'fa'
+
+const COPY: Record<
+  InvoiceLocale,
+  {
+    loading: string
+    loadError: string
+    issued: string
+    items: string
+    subtotal: string
+    total: string
+    keyPoints: string
+    accounts: string
+    card: string
+    iban: string
+    issuedBy: string
+    printHint: string
+    print: string
+    invoiceFallback: string
+  }
+> = {
+  en: {
+    loading: 'Loading invoice…',
+    loadError: 'Unable to load invoice.',
+    issued: 'Issued',
+    items: 'Items',
+    subtotal: 'Subtotal',
+    total: 'Total',
+    keyPoints: 'Key points',
+    accounts: 'Account numbers',
+    card: 'Card',
+    iban: 'IBAN',
+    issuedBy: 'Issued by',
+    printHint: 'Save as PDF from the print dialog (Destination → Save as PDF).',
+    print: 'Print to PDF',
+    invoiceFallback: 'Invoice',
+  },
+  fa: {
+    loading: 'در حال بارگذاری فاکتور…',
+    loadError: 'بارگذاری فاکتور ممکن نشد.',
+    issued: 'صادر شده',
+    items: 'آیتم‌ها',
+    subtotal: 'جمع جزء',
+    total: 'مبلغ کل',
+    keyPoints: 'نکات کلیدی',
+    accounts: 'شماره حساب‌ها',
+    card: 'کارت',
+    iban: 'شبا',
+    issuedBy: 'صادر شده توسط',
+    printHint: 'از پنجره چاپ، مقصد را روی «ذخیره به‌صورت PDF» بگذارید.',
+    print: 'چاپ / ذخیره PDF',
+    invoiceFallback: 'فاکتور',
+  },
+}
+
+function formatDate(value: string, locale: InvoiceLocale) {
   const d = new Date(value)
   if (Number.isNaN(d.getTime())) return value
-  return d.toLocaleDateString('en-US', {
+  return d.toLocaleDateString(locale === 'fa' ? 'fa-IR' : 'en-US', {
     year: 'numeric',
     month: 'long',
     day: 'numeric',
@@ -27,6 +82,21 @@ export function PublicInvoicePage() {
   const [error, setError] = useState('')
   const marketingUrl = getPlatformMarketingUrl()
 
+  const locale: InvoiceLocale = invoice?.locale === 'en' ? 'en' : 'fa'
+  const isRtl = locale === 'fa'
+  const t = COPY[locale]
+
+  const businessLabel = useMemo(() => {
+    if (!invoice?.business) return ''
+    return (
+      invoice.business.displayName?.trim() ||
+      (locale === 'fa'
+        ? invoice.business.nameFa?.trim() || invoice.business.name
+        : invoice.business.name) ||
+      ''
+    )
+  }, [invoice, locale])
+
   useEffect(() => {
     if (!invoiceId) return
     const controller = new AbortController()
@@ -36,7 +106,7 @@ export function PublicInvoicePage() {
       .then((data) => setInvoice(data))
       .catch((err) => {
         if (isAbortError(err)) return
-        setError(err instanceof ApiError ? err.message : 'Unable to load invoice.')
+        setError(err instanceof ApiError ? err.message : COPY.fa.loadError)
         setInvoice(null)
       })
       .finally(() => setLoading(false))
@@ -46,29 +116,33 @@ export function PublicInvoicePage() {
   useEffect(() => {
     if (!invoice) return
     const previous = document.title
-    document.title = invoice.name?.trim() || `Invoice ${invoice.publicId}`
+    document.title =
+      invoice.name?.trim() ||
+      `${t.invoiceFallback} ${invoice.publicId}`
     return () => {
       document.title = previous
     }
-  }, [invoice])
+  }, [invoice, t.invoiceFallback])
 
   function handlePrint() {
     window.print()
   }
 
   return (
-    <div className={styles.page} lang="en">
+    <div className={styles.page} lang={locale} dir={isRtl ? 'rtl' : 'ltr'}>
       <div className={styles.sheet}>
-        {loading ? <p className={styles.muted}>Loading invoice…</p> : null}
+        {loading ? <p className={styles.muted}>{t.loading}</p> : null}
         {error ? <p className={styles.error}>{error}</p> : null}
 
         {invoice ? (
           <>
             <header className={styles.header}>
-              <h1 className={styles.title}>{invoice.name || `Invoice ${invoice.publicId}`}</h1>
+              <h1 className={styles.title}>
+                {invoice.name || `${t.invoiceFallback} ${invoice.publicId}`}
+              </h1>
               <p className={styles.meta}>
-                Issued {formatDate(invoice.issuedAt)}
-                {invoice.business?.name ? ` · ${invoice.business.name}` : ''}
+                {t.issued} {formatDate(invoice.issuedAt, locale)}
+                {businessLabel ? ` · ${businessLabel}` : ''}
               </p>
             </header>
 
@@ -80,7 +154,7 @@ export function PublicInvoicePage() {
             ) : null}
 
             <section className={styles.section}>
-              <h2 className={styles.sectionTitle}>Items</h2>
+              <h2 className={styles.sectionTitle}>{t.items}</h2>
               <div className={styles.items}>
                 {(invoice.items ?? []).map((item) => {
                   const effective =
@@ -115,11 +189,11 @@ export function PublicInvoicePage() {
               </div>
               <div className={styles.totals}>
                 <div>
-                  <span>Subtotal</span>
+                  <span>{t.subtotal}</span>
                   <strong>{formatIrtPrice(invoice.subtotal ?? 0)}</strong>
                 </div>
                 <div className={styles.totalRow}>
-                  <span>Total</span>
+                  <span>{t.total}</span>
                   <strong>{formatIrtPrice(invoice.total ?? 0)}</strong>
                 </div>
               </div>
@@ -127,7 +201,7 @@ export function PublicInvoicePage() {
 
             {(invoice.keyPoints?.length ?? 0) > 0 ? (
               <section className={styles.section}>
-                <h2 className={styles.sectionTitle}>Key points</h2>
+                <h2 className={styles.sectionTitle}>{t.keyPoints}</h2>
                 <ul className={styles.keyPoints}>
                   {invoice.keyPoints!.map((kp) => (
                     <li key={kp.id}>{kp.text}</li>
@@ -138,19 +212,23 @@ export function PublicInvoicePage() {
 
             {(invoice.accounts?.length ?? 0) > 0 ? (
               <section className={styles.section}>
-                <h2 className={styles.sectionTitle}>Account numbers</h2>
+                <h2 className={styles.sectionTitle}>{t.accounts}</h2>
                 <div className={styles.accounts}>
                   {invoice.accounts!.map((acc) => {
-                    const details = [
-                      acc.accountHolderName,
-                      acc.cardNumber ? `Card: ${acc.cardNumber}` : null,
-                      acc.iban ? `IBAN: ${acc.iban}` : null,
+                    const numberBits = [
+                      acc.cardNumber ? `${t.card}: ${acc.cardNumber}` : null,
+                      acc.iban ? `${t.iban}: ${acc.iban}` : null,
                     ].filter(Boolean)
                     return (
                       <div key={acc.id} className={styles.account}>
                         <strong className={styles.accountBank}>{acc.bankName}</strong>
-                        {details.length > 0 ? (
-                          <p className={styles.accountDetails}>{details.join(' · ')}</p>
+                        {acc.accountHolderName ? (
+                          <p className={styles.accountDetails}>{acc.accountHolderName}</p>
+                        ) : null}
+                        {numberBits.length > 0 ? (
+                          <p className={styles.accountDetails} dir="ltr">
+                            {numberBits.join(' · ')}
+                          </p>
                         ) : null}
                       </div>
                     )
@@ -167,7 +245,7 @@ export function PublicInvoicePage() {
                 rel="noreferrer"
               >
                 <img src={meshkeeLogo} alt="" className={styles.footerLogo} />
-                <span className={styles.footerLabel}>Issued by</span>
+                <span className={styles.footerLabel}>{t.issuedBy}</span>
                 <span className={styles.footerName}>Meshkee E-Commerce Group</span>
               </a>
             </footer>
@@ -177,12 +255,10 @@ export function PublicInvoicePage() {
 
       {invoice ? (
         <div className={styles.toolbar}>
-          <p className={styles.toolbarHint}>
-            Save as PDF from the print dialog (Destination → Save as PDF).
-          </p>
+          <p className={styles.toolbarHint}>{t.printHint}</p>
           <button type="button" className={styles.printBtn} onClick={handlePrint}>
             <FileDown size={16} aria-hidden />
-            Print to PDF
+            {t.print}
           </button>
         </div>
       ) : null}
diff --git a/apps/super-admin/src/types/invoice.ts b/apps/super-admin/src/types/invoice.ts
index f76f9c1..fc44795 100644
--- a/apps/super-admin/src/types/invoice.ts
+++ b/apps/super-admin/src/types/invoice.ts
@@ -91,7 +91,11 @@ export type PublicInvoice = {
   name: string | null
   topText: string | null
   issuedAt: string
-  business?: Invoice['business']
+  /** Business dashboard default locale — drives public invoice RTL/LTR. */
+  locale?: 'en' | 'fa'
+  business?: Invoice['business'] & {
+    displayName?: string
+  }
   user?: {
     firstName: string | null
     lastName: string | null
diff --git a/docs/PROJECT_CONTEXT.md b/docs/PROJECT_CONTEXT.md
index 1121605..276f660 100644
--- a/docs/PROJECT_CONTEXT.md
+++ b/docs/PROJECT_CONTEXT.md
@@ -395,6 +395,7 @@ Auth: platform template routes → super-admin. Business routes → `BusinessPer
 
 **Public invoice viewer:**
 - Super-admin SPA `/invoices/:publicId` (`PublicInvoicePage`) — print-to-PDF; opaque 12-digit `publicId`
+- Payload includes `locale` (`fa` | `en` from business `settings.branding.defaultLocale`) — page is RTL + Farsi chrome when `fa`
 - Platform invoices: `https://{INVOICE_PUBLIC_DOMAIN}/invoices/{publicId}` (default `meshkee.com`)
 - Business invoices: `https://{primaryBusinessDomain}/invoices/{publicId}` (e.g. `sanihome.ir`)