diff --git a/frontend/app/components/IntlProvider.tsx b/frontend/app/components/IntlProvider.tsx
index aea34e5..1306622 100644
--- a/frontend/app/components/IntlProvider.tsx
+++ b/frontend/app/components/IntlProvider.tsx
@@ -17,11 +17,44 @@ import caExchange from "../../locales/ca/exchange.json";
 import esAuth from "../../locales/es/auth.json";
 import enAuth from "../../locales/en/auth.json";
 import caAuth from "../../locales/ca/auth.json";
+import esTrades from "../../locales/es/trades.json";
+import enTrades from "../../locales/en/trades.json";
+import caTrades from "../../locales/ca/trades.json";
+import esInvites from "../../locales/es/invites.json";
+import enInvites from "../../locales/en/invites.json";
+import caInvites from "../../locales/ca/invites.json";
+import esProfile from "../../locales/es/profile.json";
+import enProfile from "../../locales/en/profile.json";
+import caProfile from "../../locales/ca/profile.json";
 
 const messages = {
-  es: { common: esCommon, navigation: esNavigation, exchange: esExchange, auth: esAuth },
-  en: { common: enCommon, navigation: enNavigation, exchange: enExchange, auth: enAuth },
-  ca: { common: caCommon, navigation: caNavigation, exchange: caExchange, auth: caAuth },
+  es: {
+    common: esCommon,
+    navigation: esNavigation,
+    exchange: esExchange,
+    auth: esAuth,
+    trades: esTrades,
+    invites: esInvites,
+    profile: esProfile,
+  },
+  en: {
+    common: enCommon,
+    navigation: enNavigation,
+    exchange: enExchange,
+    auth: enAuth,
+    trades: enTrades,
+    invites: enInvites,
+    profile: enProfile,
+  },
+  ca: {
+    common: caCommon,
+    navigation: caNavigation,
+    exchange: caExchange,
+    auth: caAuth,
+    trades: caTrades,
+    invites: caInvites,
+    profile: caProfile,
+  },
 };
 
 interface IntlProviderProps {
diff --git a/frontend/app/exchange/components/BookingStep.tsx b/frontend/app/exchange/components/BookingStep.tsx
index e84f076..c540b61 100644
--- a/frontend/app/exchange/components/BookingStep.tsx
+++ b/frontend/app/exchange/components/BookingStep.tsx
@@ -6,6 +6,7 @@ import { components } from "../../generated/api";
 import { formatDate, formatTime } from "../../utils/date";
 import { formatEur } from "../../utils/exchange";
 import { bannerStyles } from "../../styles/shared";
+import { useTranslation } from "../../hooks/useTranslation";
 
 type BookableSlot = components["schemas"]["BookableSlot"];
 type ExchangeResponse = components["schemas"]["ExchangeResponse"];
@@ -215,14 +216,15 @@ export function BookingStep({
   onSlotSelect,
   onBackToDetails,
 }: BookingStepProps) {
+  const t = useTranslation("exchange");
   return (
     <>
       {/* Trade Summary Card */}
       <div style={styles.summaryCard}>
         <div style={styles.summaryHeader}>
-          <span style={styles.summaryTitle}>Your Exchange</span>
+          <span style={styles.summaryTitle}>{t("bookingStep.yourExchange")}</span>
           <button onClick={onBackToDetails} style={styles.editButton}>
-            Edit
+            {t("bookingStep.edit")}
           </button>
         </div>
         <div style={styles.summaryDetails}>
@@ -232,7 +234,7 @@ export function BookingStep({
               color: direction === "buy" ? "#4ade80" : "#f87171",
             }}
           >
-            {direction === "buy" ? "Buy" : "Sell"} BTC
+            {direction === "buy" ? t("bookingStep.buy") : t("bookingStep.sell")} BTC
           </span>
           <span style={styles.summaryDivider}>•</span>
           <span>{formatEur(eurAmount)}</span>
@@ -242,15 +244,17 @@ export function BookingStep({
           </span>
           <span style={styles.summaryDivider}>•</span>
           <span style={styles.summaryPaymentMethod}>
-            {direction === "buy" ? "Receive via " : "Send via "}
-            {bitcoinTransferMethod === "onchain" ? "Onchain" : "Lightning"}
+            {direction === "buy" ? t("bookingStep.receiveVia") : t("bookingStep.sendVia")}{" "}
+            {bitcoinTransferMethod === "onchain"
+              ? t("transferMethod.onchain")
+              : t("transferMethod.lightning")}
           </span>
         </div>
       </div>
 
       {/* Date Selection */}
       <div style={styles.section}>
-        <h2 style={styles.sectionTitle}>Select a Date</h2>
+        <h2 style={styles.sectionTitle}>{t("bookingStep.selectDate")}</h2>
         <div style={styles.dateGrid}>
           {dates.map((date) => {
             const dateStr = formatDate(date);
@@ -291,15 +295,13 @@ export function BookingStep({
       {/* Warning for existing trade on selected date */}
       {existingTradeOnSelectedDate && (
         <div style={bannerStyles.errorBanner}>
-          <div>
-            You already have a trade booked on this day. You can only book one trade per day.
-          </div>
+          <div>{t("bookingStep.existingTradeWarning")}</div>
           <div style={styles.errorLink}>
             <a
               href={`/trades/${existingTradeOnSelectedDate.public_id}`}
               style={styles.errorLinkAnchor}
             >
-              View your existing trade →
+              {t("bookingStep.viewExistingTrade")}
             </a>
           </div>
         </div>
@@ -309,7 +311,7 @@ export function BookingStep({
       {selectedDate && !existingTradeOnSelectedDate && (
         <div style={styles.section}>
           <h2 style={styles.sectionTitle}>
-            Available Slots for{" "}
+            {t("bookingStep.availableSlots")}{" "}
             {selectedDate.toLocaleDateString("en-US", {
               weekday: "long",
               month: "long",
@@ -318,9 +320,9 @@ export function BookingStep({
           </h2>
 
           {isLoadingSlots ? (
-            <div style={styles.emptyState}>Loading slots...</div>
+            <div style={styles.emptyState}>{t("bookingStep.loadingSlots")}</div>
           ) : availableSlots.length === 0 ? (
-            <div style={styles.emptyState}>No available slots for this date</div>
+            <div style={styles.emptyState}>{t("bookingStep.noSlots")}</div>
           ) : (
             <div style={styles.slotGrid}>
               {availableSlots.map((slot) => {
diff --git a/frontend/app/exchange/components/ConfirmationStep.tsx b/frontend/app/exchange/components/ConfirmationStep.tsx
index 1cb0197..e113527 100644
--- a/frontend/app/exchange/components/ConfirmationStep.tsx
+++ b/frontend/app/exchange/components/ConfirmationStep.tsx
@@ -6,6 +6,7 @@ import { components } from "../../generated/api";
 import { formatTime } from "../../utils/date";
 import { formatEur } from "../../utils/exchange";
 import { buttonStyles } from "../../styles/shared";
+import { useTranslation } from "../../hooks/useTranslation";
 
 type BookableSlot = components["schemas"]["BookableSlot"];
 type Direction = "buy" | "sell";
@@ -154,14 +155,15 @@ export function ConfirmationStep({
   onConfirm,
   onBack,
 }: ConfirmationStepProps) {
+  const t = useTranslation("exchange");
   return (
     <>
       {/* Compressed Booking Summary */}
       <div style={styles.compressedBookingCard}>
         <div style={styles.compressedBookingHeader}>
-          <span style={styles.compressedBookingTitle}>Appointment</span>
+          <span style={styles.compressedBookingTitle}>{t("confirmationStep.appointment")}</span>
           <button onClick={onBack} style={styles.editButton}>
-            Edit
+            {t("confirmationStep.edit")}
           </button>
         </div>
         <div style={styles.compressedBookingDetails}>
@@ -181,44 +183,48 @@ export function ConfirmationStep({
 
       {/* Confirmation Card */}
       <div style={styles.confirmCard}>
-        <h3 style={styles.confirmTitle}>Confirm Trade</h3>
+        <h3 style={styles.confirmTitle}>{t("confirmationStep.confirmTrade")}</h3>
         <div style={styles.confirmDetails}>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>Time:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.time")}</span>
             <span style={styles.confirmValue}>
               {formatTime(selectedSlot.start_time)} - {formatTime(selectedSlot.end_time)}
             </span>
           </div>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>Direction:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.direction")}</span>
             <span
               style={{
                 ...styles.confirmValue,
                 color: direction === "buy" ? "#4ade80" : "#f87171",
               }}
             >
-              {direction === "buy" ? "Buy BTC" : "Sell BTC"}
+              {direction === "buy" ? t("direction.buyShort") : t("direction.sellShort")}
             </span>
           </div>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>EUR:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.eur")}</span>
             <span style={styles.confirmValue}>{formatEur(eurAmount)}</span>
           </div>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>BTC:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.btc")}</span>
             <span style={{ ...styles.confirmValue, ...styles.satsValue }}>
               <SatsDisplay sats={satsAmount} />
             </span>
           </div>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>Rate:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.rate")}</span>
             <span style={styles.confirmValue}>{formatPrice(agreedPrice)}/BTC</span>
           </div>
           <div style={styles.confirmRow}>
-            <span style={styles.confirmLabel}>Payment:</span>
+            <span style={styles.confirmLabel}>{t("confirmationStep.payment")}</span>
             <span style={styles.confirmValue}>
-              {direction === "buy" ? "Receive via " : "Send via "}
-              {bitcoinTransferMethod === "onchain" ? "Onchain" : "Lightning"}
+              {direction === "buy"
+                ? t("confirmationStep.receiveVia")
+                : t("confirmationStep.sendVia")}{" "}
+              {bitcoinTransferMethod === "onchain"
+                ? t("transferMethod.onchain")
+                : t("transferMethod.lightning")}
             </span>
           </div>
         </div>
@@ -237,13 +243,15 @@ export function ConfirmationStep({
             }}
           >
             {isBooking
-              ? "Booking..."
+              ? t("confirmationStep.booking")
               : isPriceStale
-                ? "Price Stale"
-                : `Confirm ${direction === "buy" ? "Buy" : "Sell"}`}
+                ? t("confirmationStep.priceStale")
+                : direction === "buy"
+                  ? t("confirmationStep.confirmBuy")
+                  : t("confirmationStep.confirmSell")}
           </button>
           <button onClick={onBack} disabled={isBooking} style={styles.cancelButton}>
-            Back
+            {t("confirmationStep.back")}
           </button>
         </div>
       </div>
diff --git a/frontend/app/exchange/components/ExchangeDetailsStep.tsx b/frontend/app/exchange/components/ExchangeDetailsStep.tsx
index 3219baf..0f2d7de 100644
--- a/frontend/app/exchange/components/ExchangeDetailsStep.tsx
+++ b/frontend/app/exchange/components/ExchangeDetailsStep.tsx
@@ -5,6 +5,7 @@ import { SatsDisplay } from "../../components/SatsDisplay";
 import { formatEur } from "../../utils/exchange";
 import { buttonStyles } from "../../styles/shared";
 import constants from "../../../../shared/constants.json";
+import { useTranslation } from "../../hooks/useTranslation";
 
 const { lightningMaxEur: LIGHTNING_MAX_EUR } = constants.exchange;
 
@@ -225,6 +226,7 @@ export function ExchangeDetailsStep({
   hasPrice,
   onContinue,
 }: ExchangeDetailsStepProps) {
+  const t = useTranslation("exchange");
   const isLightningDisabled = eurAmount > LIGHTNING_MAX_EUR * 100;
 
   const handleAmountChange = (value: number) => {
@@ -263,7 +265,7 @@ export function ExchangeDetailsStep({
             ...(direction === "buy" ? styles.directionBtnBuyActive : {}),
           }}
         >
-          Buy BTC
+          {t("direction.buyShort")}
         </button>
         <button
           onClick={() => onDirectionChange("sell")}
@@ -272,14 +274,15 @@ export function ExchangeDetailsStep({
             ...(direction === "sell" ? styles.directionBtnSellActive : {}),
           }}
         >
-          Sell BTC
+          {t("direction.sellShort")}
         </button>
       </div>
 
       {/* Payment Method Selector */}
       <div style={styles.paymentMethodSection}>
         <div style={styles.paymentMethodLabel}>
-          Payment Method <span style={styles.required}>*</span>
+          {t("detailsStep.paymentMethod")}{" "}
+          <span style={styles.required}>{t("detailsStep.required")}</span>
         </div>
         <div style={styles.paymentMethodRow}>
           <button
@@ -290,7 +293,7 @@ export function ExchangeDetailsStep({
             }}
           >
             <span style={styles.paymentMethodIcon}>🔗</span>
-            <span>Onchain</span>
+            <span>{t("transferMethod.onchain")}</span>
           </button>
           <button
             onClick={() => onBitcoinTransferMethodChange("lightning")}
@@ -302,12 +305,12 @@ export function ExchangeDetailsStep({
             }}
           >
             <span style={styles.paymentMethodIcon}>⚡</span>
-            <span>Lightning</span>
+            <span>{t("transferMethod.lightning")}</span>
           </button>
         </div>
         {isLightningDisabled && (
           <div style={styles.thresholdMessage}>
-            Lightning payments are only available for amounts up to €{LIGHTNING_MAX_EUR}
+            {t("detailsStep.lightningThreshold", { max: LIGHTNING_MAX_EUR })}
           </div>
         )}
       </div>
@@ -315,7 +318,7 @@ export function ExchangeDetailsStep({
       {/* Amount Section */}
       <div style={styles.amountSection}>
         <div style={styles.amountHeader}>
-          <span style={styles.amountLabel}>Amount (EUR)</span>
+          <span style={styles.amountLabel}>{t("detailsStep.amount")}</span>
           <div style={styles.amountInputWrapper}>
             <span style={styles.amountCurrency}>€</span>
             <input
@@ -345,18 +348,24 @@ export function ExchangeDetailsStep({
       <div style={styles.tradeSummary}>
         {direction === "buy" ? (
           <p style={styles.summaryText}>
-            You buy{" "}
+            {t("detailsStep.summaryBuy").split("{sats}")[0].trim()}{" "}
             <strong style={styles.satsValue}>
               <SatsDisplay sats={satsAmount} />
             </strong>
-            , you sell <strong>{formatEur(eurAmount)}</strong>
+            {", "}
+            {t("detailsStep.summaryBuy").split("{sats}")[1]?.split("{eur}")[0]?.trim()}{" "}
+            <strong>{formatEur(eurAmount)}</strong>
           </p>
         ) : (
           <p style={styles.summaryText}>
-            You buy <strong>{formatEur(eurAmount)}</strong>, you sell{" "}
+            {t("detailsStep.summarySell").split("{sats}")[0]?.split("{eur}")[0]?.trim()}{" "}
+            <strong>{formatEur(eurAmount)}</strong>
+            {", "}
+            {t("detailsStep.summarySell").split("{sats}")[0]?.split("{eur}")[1]?.trim()}{" "}
             <strong style={styles.satsValue}>
               <SatsDisplay sats={satsAmount} />
             </strong>
+            {t("detailsStep.summarySell").split("{sats}")[1]?.trim()}
           </p>
         )}
       </div>
@@ -370,7 +379,7 @@ export function ExchangeDetailsStep({
           ...(isPriceStale || !hasPrice ? buttonStyles.buttonDisabled : {}),
         }}
       >
-        Continue to Booking
+        {t("detailsStep.continueToBooking")}
       </button>
     </div>
   );
diff --git a/frontend/app/exchange/components/PriceDisplay.tsx b/frontend/app/exchange/components/PriceDisplay.tsx
index e9e03a5..8cdf5a8 100644
--- a/frontend/app/exchange/components/PriceDisplay.tsx
+++ b/frontend/app/exchange/components/PriceDisplay.tsx
@@ -2,6 +2,7 @@
 
 import { CSSProperties } from "react";
 import { components } from "../../generated/api";
+import { useTranslation } from "../../hooks/useTranslation";
 
 type ExchangePriceResponse = components["schemas"]["ExchangePriceResponse"];
 
@@ -94,6 +95,7 @@ export function PriceDisplay({
   direction,
   agreedPrice,
 }: PriceDisplayProps) {
+  const t = useTranslation("exchange");
   const marketPrice = priceData?.price?.market_price ?? 0;
   const premiumPercent = priceData?.price?.premium_percentage ?? 5;
   const isPriceStale = priceData?.price?.is_stale ?? false;
@@ -101,16 +103,16 @@ export function PriceDisplay({
   return (
     <div style={styles.priceCard}>
       {isLoading && !priceData ? (
-        <div style={styles.priceLoading}>Loading price...</div>
+        <div style={styles.priceLoading}>{t("priceDisplay.loading")}</div>
       ) : error && !priceData?.price ? (
         <div style={styles.priceError}>{error}</div>
       ) : (
         <>
           <div style={styles.priceRow}>
-            <span style={styles.priceLabel}>Market:</span>
+            <span style={styles.priceLabel}>{t("priceDisplay.market")}</span>
             <span style={styles.priceValue}>{formatPrice(marketPrice)}</span>
             <span style={styles.priceDivider}>•</span>
-            <span style={styles.priceLabel}>Our price:</span>
+            <span style={styles.priceLabel}>{t("priceDisplay.ourPrice")}</span>
             <span style={styles.priceValue}>{formatPrice(agreedPrice)}</span>
             <span style={styles.premiumBadge}>
               {direction === "buy" ? "+" : "-"}
@@ -119,8 +121,8 @@ export function PriceDisplay({
           </div>
           {lastUpdate && (
             <div style={styles.priceTimestamp}>
-              Updated {lastUpdate.toLocaleTimeString()}
-              {isPriceStale && <span style={styles.staleWarning}> (stale)</span>}
+              {t("priceDisplay.updated")} {lastUpdate.toLocaleTimeString()}
+              {isPriceStale && <span style={styles.staleWarning}> {t("priceDisplay.stale")}</span>}
             </div>
           )}
         </>
diff --git a/frontend/app/exchange/components/StepIndicator.tsx b/frontend/app/exchange/components/StepIndicator.tsx
index d082990..5a4f58e 100644
--- a/frontend/app/exchange/components/StepIndicator.tsx
+++ b/frontend/app/exchange/components/StepIndicator.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { CSSProperties } from "react";
+import { useTranslation } from "../../hooks/useTranslation";
 
 type WizardStep = "details" | "booking" | "confirmation";
 
@@ -58,6 +59,7 @@ const styles: Record<string, CSSProperties> = {
  * Shows which step the user is currently on and which steps are completed.
  */
 export function StepIndicator({ currentStep }: StepIndicatorProps) {
+  const t = useTranslation("exchange");
   return (
     <div style={styles.stepIndicator}>
       <div
@@ -67,7 +69,7 @@ export function StepIndicator({ currentStep }: StepIndicatorProps) {
         }}
       >
         <span style={styles.stepNumber}>1</span>
-        <span style={styles.stepLabel}>Exchange Details</span>
+        <span style={styles.stepLabel}>{t("steps.details")}</span>
       </div>
       <div style={styles.stepDivider} />
       <div
@@ -81,7 +83,7 @@ export function StepIndicator({ currentStep }: StepIndicatorProps) {
         }}
       >
         <span style={styles.stepNumber}>2</span>
-        <span style={styles.stepLabel}>Book Appointment</span>
+        <span style={styles.stepLabel}>{t("steps.booking")}</span>
       </div>
       <div style={styles.stepDivider} />
       <div
@@ -91,7 +93,7 @@ export function StepIndicator({ currentStep }: StepIndicatorProps) {
         }}
       >
         <span style={styles.stepNumber}>3</span>
-        <span style={styles.stepLabel}>Confirm</span>
+        <span style={styles.stepLabel}>{t("steps.confirm")}</span>
       </div>
     </div>
   );
diff --git a/frontend/app/exchange/page.tsx b/frontend/app/exchange/page.tsx
index b8cac6a..00f8c72 100644
--- a/frontend/app/exchange/page.tsx
+++ b/frontend/app/exchange/page.tsx
@@ -19,6 +19,7 @@ import { StepIndicator } from "./components/StepIndicator";
 import { ExchangeDetailsStep } from "./components/ExchangeDetailsStep";
 import { BookingStep } from "./components/BookingStep";
 import { ConfirmationStep } from "./components/ConfirmationStep";
+import { useTranslation } from "../hooks/useTranslation";
 
 type ExchangeResponse = components["schemas"]["ExchangeResponse"];
 
@@ -57,6 +58,7 @@ const styles = {
 
 export default function ExchangePage() {
   const router = useRouter();
+  const t = useTranslation("exchange");
   const { user, isLoading, isAuthorized } = useRequireAuth({
     requiredPermission: Permission.CREATE_EXCHANGE,
     fallbackRedirect: "/",
@@ -281,8 +283,8 @@ export default function ExchangePage() {
     <main style={layoutStyles.main}>
       <Header currentPage="exchange" />
       <div style={styles.content}>
-        <h1 style={typographyStyles.pageTitle}>Exchange Bitcoin</h1>
-        <p style={typographyStyles.pageSubtitle}>Buy or sell Bitcoin with a 5% premium</p>
+        <h1 style={typographyStyles.pageTitle}>{t("page.title")}</h1>
+        <p style={typographyStyles.pageSubtitle}>{t("page.subtitle")}</p>
 
         {error && (
           <div style={bannerStyles.errorBanner}>
@@ -290,7 +292,7 @@ export default function ExchangePage() {
             {existingTradeId && (
               <div style={styles.errorLink}>
                 <a href={`/trades/${existingTradeId}`} style={styles.errorLinkAnchor}>
-                  View your existing trade →
+                  {t("page.viewExistingTrade")}
                 </a>
               </div>
             )}
diff --git a/frontend/app/invites/page.tsx b/frontend/app/invites/page.tsx
index 11d8d17..e7d5bc6 100644
--- a/frontend/app/invites/page.tsx
+++ b/frontend/app/invites/page.tsx
@@ -11,11 +11,13 @@ import { components } from "../generated/api";
 import constants from "../../../shared/constants.json";
 import { Permission } from "../auth-context";
 import { cardStyles, typographyStyles, buttonStyles } from "../styles/shared";
+import { useTranslation } from "../hooks/useTranslation";
 
 // Use generated type from OpenAPI schema
 type Invite = components["schemas"]["UserInviteResponse"];
 
 export default function InvitesPage() {
+  const t = useTranslation("invites");
   const { user, isLoading, isAuthorized } = useRequireAuth({
     requiredPermission: Permission.VIEW_OWN_INVITES,
     fallbackRedirect: "/admin/trades",
@@ -62,26 +64,21 @@ export default function InvitesPage() {
     >
       <div style={styles.pageCard}>
         <div style={cardStyles.cardHeader}>
-          <h1 style={cardStyles.cardTitle}>My Invites</h1>
-          <p style={cardStyles.cardSubtitle}>
-            Share your invite codes with friends to let them join
-          </p>
+          <h1 style={cardStyles.cardTitle}>{t("page.title")}</h1>
+          <p style={cardStyles.cardSubtitle}>{t("page.subtitle")}</p>
         </div>
 
         {(invites?.length ?? 0) === 0 ? (
-          <EmptyState
-            message="You don't have any invites yet."
-            hint="Contact an admin if you need invite codes to share."
-          />
+          <EmptyState message={t("page.noInvites")} hint={t("page.noInvitesHint")} />
         ) : (
           <div style={styles.sections}>
             {/* Ready Invites */}
             {readyInvites.length > 0 && (
               <div style={styles.section}>
-                <h2 style={typographyStyles.sectionTitle}>Available ({readyInvites.length})</h2>
-                <p style={typographyStyles.sectionHint}>
-                  Share these links with people you want to invite
-                </p>
+                <h2 style={typographyStyles.sectionTitle}>
+                  {t("page.available", { count: readyInvites.length })}
+                </h2>
+                <p style={typographyStyles.sectionHint}>{t("page.availableHint")}</p>
                 <div style={styles.inviteList}>
                   {readyInvites.map((invite) => (
                     <div key={invite.id} style={styles.inviteCard}>
@@ -91,7 +88,7 @@ export default function InvitesPage() {
                           onClick={() => copyToClipboard(invite)}
                           style={buttonStyles.accentButton}
                         >
-                          {copiedId === invite.id ? "Copied!" : "Copy Link"}
+                          {copiedId === invite.id ? t("page.copied") : t("page.copyLink")}
                         </button>
                       </div>
                     </div>
@@ -103,14 +100,20 @@ export default function InvitesPage() {
             {/* Spent Invites */}
             {spentInvites.length > 0 && (
               <div style={styles.section}>
-                <h2 style={typographyStyles.sectionTitle}>Used ({spentInvites.length})</h2>
+                <h2 style={typographyStyles.sectionTitle}>
+                  {t("page.used", { count: spentInvites.length })}
+                </h2>
                 <div style={styles.inviteList}>
                   {spentInvites.map((invite) => (
                     <div key={invite.id} style={styles.inviteCardSpent}>
                       <div style={styles.inviteCode}>{invite.identifier}</div>
                       <div style={styles.inviteeMeta}>
-                        <StatusBadge variant="success">Used</StatusBadge>
-                        <span style={styles.inviteeEmail}>by {invite.used_by_email}</span>
+                        <StatusBadge variant="success">{t("page.usedStatus")}</StatusBadge>
+                        {invite.used_by_email && (
+                          <span style={styles.inviteeEmail}>
+                            {t("page.usedBy", { email: invite.used_by_email })}
+                          </span>
+                        )}
                       </div>
                     </div>
                   ))}
@@ -121,12 +124,14 @@ export default function InvitesPage() {
             {/* Revoked Invites */}
             {revokedInvites.length > 0 && (
               <div style={styles.section}>
-                <h2 style={typographyStyles.sectionTitle}>Revoked ({revokedInvites.length})</h2>
+                <h2 style={typographyStyles.sectionTitle}>
+                  {t("page.revoked", { count: revokedInvites.length })}
+                </h2>
                 <div style={styles.inviteList}>
                   {revokedInvites.map((invite) => (
                     <div key={invite.id} style={styles.inviteCardRevoked}>
                       <div style={styles.inviteCode}>{invite.identifier}</div>
-                      <StatusBadge variant="error">Revoked</StatusBadge>
+                      <StatusBadge variant="error">{t("page.revokedStatus")}</StatusBadge>
                     </div>
                   ))}
                 </div>
diff --git a/frontend/app/profile/page.tsx b/frontend/app/profile/page.tsx
index 5d8c1da..296fb00 100644
--- a/frontend/app/profile/page.tsx
+++ b/frontend/app/profile/page.tsx
@@ -19,6 +19,7 @@ import {
   utilityStyles,
 } from "../styles/shared";
 import { validateProfileFields } from "../utils/validation";
+import { useTranslation } from "../hooks/useTranslation";
 
 // Use generated type from OpenAPI schema
 type ProfileData = components["schemas"]["ProfileResponse"];
@@ -41,6 +42,7 @@ function toFormData(data: ProfileData): FormData {
 }
 
 export default function ProfilePage() {
+  const t = useTranslation("profile");
   const { user, isLoading, isAuthorized } = useRequireAuth({
     requiredPermission: Permission.MANAGE_OWN_PROFILE,
     fallbackRedirect: "/admin/trades",
@@ -88,7 +90,7 @@ export default function ProfilePage() {
       setGodfatherEmail(data.godfather_email ?? null);
     } catch (err) {
       console.error("Profile load error:", err);
-      setToast({ message: "Failed to load profile", type: "error" });
+      setToast({ message: t("messages.loadError"), type: "error" });
     } finally {
       setIsLoadingProfile(false);
     }
@@ -141,16 +143,16 @@ export default function ProfilePage() {
       const formValues = toFormData(data);
       setFormData(formValues);
       setOriginalData(formValues);
-      setToast({ message: "Profile saved successfully!", type: "success" });
+      setToast({ message: t("messages.saveSuccess"), type: "success" });
     } catch (err) {
       console.error("Profile save error:", err);
       const fieldErrors = extractFieldErrors(err);
       if (fieldErrors?.detail?.field_errors) {
         setErrors(fieldErrors.detail.field_errors);
-        setToast({ message: "Please fix the errors below", type: "error" });
+        setToast({ message: t("messages.fixErrors"), type: "error" });
       } else {
         setToast({
-          message: extractApiErrorMessage(err, "Network error. Please try again."),
+          message: extractApiErrorMessage(err, t("messages.networkError")),
           type: "error",
         });
       }
@@ -181,16 +183,16 @@ export default function ProfilePage() {
       <div style={layoutStyles.contentCentered}>
         <div style={styles.profileCard}>
           <div style={cardStyles.cardHeader}>
-            <h1 style={cardStyles.cardTitle}>My Profile</h1>
-            <p style={cardStyles.cardSubtitle}>Manage your contact information</p>
+            <h1 style={cardStyles.cardTitle}>{t("page.title")}</h1>
+            <p style={cardStyles.cardSubtitle}>{t("page.subtitle")}</p>
           </div>
 
           <form onSubmit={handleSubmit} style={formStyles.form}>
             {/* Login email - read only */}
             <div style={formStyles.field}>
               <label style={styles.labelWithBadge}>
-                Login Email
-                <span style={utilityStyles.readOnlyBadge}>Read only</span>
+                {t("form.email")}
+                <span style={utilityStyles.readOnlyBadge}>{t("form.readOnly")}</span>
               </label>
               <input
                 type="email"
@@ -198,36 +200,32 @@ export default function ProfilePage() {
                 style={{ ...formStyles.input, ...formStyles.inputReadOnly }}
                 disabled
               />
-              <span style={formStyles.hint}>
-                This is your login email and cannot be changed here.
-              </span>
+              <span style={formStyles.hint}>{t("form.emailHint")}</span>
             </div>
 
             {/* Godfather - shown if user was invited */}
             {godfatherEmail && (
               <div style={formStyles.field}>
                 <label style={styles.labelWithBadge}>
-                  Invited By
-                  <span style={utilityStyles.readOnlyBadge}>Read only</span>
+                  {t("form.invitedBy")}
+                  <span style={utilityStyles.readOnlyBadge}>{t("form.readOnly")}</span>
                 </label>
                 <div style={styles.godfatherBox}>
                   <span style={styles.godfatherEmail}>{godfatherEmail}</span>
                 </div>
-                <span style={formStyles.hint}>The user who invited you to join.</span>
+                <span style={formStyles.hint}>{t("form.invitedByHint")}</span>
               </div>
             )}
 
             <div style={utilityStyles.divider} />
 
-            <p style={styles.sectionLabel}>Contact Details</p>
-            <p style={styles.sectionHint}>
-              These are for communication purposes only — they won&apos;t affect your login.
-            </p>
+            <p style={styles.sectionLabel}>{t("form.contactDetails")}</p>
+            <p style={styles.sectionHint}>{t("form.contactDetailsHint")}</p>
 
             {/* Contact email */}
             <div style={formStyles.field}>
               <label htmlFor="contact_email" style={formStyles.label}>
-                Contact Email
+                {t("form.contactEmail")}
               </label>
               <input
                 id="contact_email"
@@ -238,7 +236,7 @@ export default function ProfilePage() {
                   ...formStyles.input,
                   ...(errors.contact_email ? formStyles.inputError : {}),
                 }}
-                placeholder="alternate@example.com"
+                placeholder={t("placeholders.contactEmail")}
               />
               {errors.contact_email && (
                 <span style={formStyles.errorText}>{errors.contact_email}</span>
@@ -248,7 +246,7 @@ export default function ProfilePage() {
             {/* Telegram */}
             <div style={formStyles.field}>
               <label htmlFor="telegram" style={formStyles.label}>
-                Telegram
+                {t("form.telegram")}
               </label>
               <input
                 id="telegram"
@@ -259,7 +257,7 @@ export default function ProfilePage() {
                   ...formStyles.input,
                   ...(errors.telegram ? formStyles.inputError : {}),
                 }}
-                placeholder="@username"
+                placeholder={t("placeholders.telegram")}
               />
               {errors.telegram && <span style={formStyles.errorText}>{errors.telegram}</span>}
             </div>
@@ -267,7 +265,7 @@ export default function ProfilePage() {
             {/* Signal */}
             <div style={formStyles.field}>
               <label htmlFor="signal" style={formStyles.label}>
-                Signal
+                {t("form.signal")}
               </label>
               <input
                 id="signal"
@@ -278,7 +276,7 @@ export default function ProfilePage() {
                   ...formStyles.input,
                   ...(errors.signal ? formStyles.inputError : {}),
                 }}
-                placeholder="username.01"
+                placeholder={t("placeholders.signal")}
               />
               {errors.signal && <span style={formStyles.errorText}>{errors.signal}</span>}
             </div>
@@ -286,7 +284,7 @@ export default function ProfilePage() {
             {/* Nostr npub */}
             <div style={formStyles.field}>
               <label htmlFor="nostr_npub" style={formStyles.label}>
-                Nostr (npub)
+                {t("form.nostrNpub")}
               </label>
               <input
                 id="nostr_npub"
@@ -297,7 +295,7 @@ export default function ProfilePage() {
                   ...formStyles.input,
                   ...(errors.nostr_npub ? formStyles.inputError : {}),
                 }}
-                placeholder="npub1..."
+                placeholder={t("placeholders.nostrNpub")}
               />
               {errors.nostr_npub && <span style={formStyles.errorText}>{errors.nostr_npub}</span>}
             </div>
@@ -311,7 +309,7 @@ export default function ProfilePage() {
               }}
               disabled={!canSubmit}
             >
-              {isSubmitting ? "Saving..." : "Save Changes"}
+              {isSubmitting ? t("form.saving") : t("form.saveChanges")}
             </button>
           </form>
         </div>
diff --git a/frontend/app/trades/page.tsx b/frontend/app/trades/page.tsx
index cda4720..376c960 100644
--- a/frontend/app/trades/page.tsx
+++ b/frontend/app/trades/page.tsx
@@ -15,9 +15,12 @@ import { useMutation } from "../hooks/useMutation";
 import { formatDateTime } from "../utils/date";
 import { formatEur } from "../utils/exchange";
 import { typographyStyles, tradeCardStyles } from "../styles/shared";
+import { useTranslation } from "../hooks/useTranslation";
 
 export default function TradesPage() {
   const router = useRouter();
+  const t = useTranslation("trades");
+  const tExchange = useTranslation("exchange");
   const { user, isLoading, isAuthorized } = useRequireAuth({
     requiredPermission: Permission.VIEW_OWN_EXCHANGES,
     fallbackRedirect: "/",
@@ -70,17 +73,17 @@ export default function TradesPage() {
       error={error}
       contentStyle={styles.content}
     >
-      <h1 style={typographyStyles.pageTitle}>My Trades</h1>
-      <p style={typographyStyles.pageSubtitle}>View and manage your Bitcoin trades</p>
+      <h1 style={typographyStyles.pageTitle}>{t("page.title")}</h1>
+      <p style={typographyStyles.pageSubtitle}>{t("page.subtitle")}</p>
 
       {isLoadingTrades ? (
-        <EmptyState message="Loading trades..." isLoading={true} />
+        <EmptyState message={t("page.loadingTrades")} isLoading={true} />
       ) : (trades?.length ?? 0) === 0 ? (
         <EmptyState
-          message="You don't have any trades yet."
+          message={t("page.noTrades")}
           action={
             <a href="/exchange" style={styles.emptyStateLink}>
-              Start trading
+              {t("page.startTrading")}
             </a>
           }
         />
@@ -89,7 +92,9 @@ export default function TradesPage() {
           {/* Upcoming Trades */}
           {upcomingTrades.length > 0 && (
             <div style={styles.section}>
-              <h2 style={styles.sectionTitle}>Upcoming ({upcomingTrades.length})</h2>
+              <h2 style={styles.sectionTitle}>
+                {t("page.upcoming", { count: upcomingTrades.length })}
+              </h2>
               <div style={tradeCardStyles.tradeList}>
                 {upcomingTrades.map((trade) => {
                   const isBuy = trade.direction === "buy";
@@ -110,7 +115,7 @@ export default function TradesPage() {
                                 color: isBuy ? "#4ade80" : "#f87171",
                               }}
                             >
-                              {isBuy ? "BUY BTC" : "SELL BTC"}
+                              {isBuy ? tExchange("direction.buy") : tExchange("direction.sell")}
                             </span>
                             <span
                               style={{
@@ -120,8 +125,8 @@ export default function TradesPage() {
                               }}
                             >
                               {isBuy
-                                ? `Receive via ${trade.bitcoin_transfer_method === "onchain" ? "Onchain" : "Lightning"}`
-                                : `Send via ${trade.bitcoin_transfer_method === "onchain" ? "Onchain" : "Lightning"}`}
+                                ? `${tExchange("bookingStep.receiveVia")} ${trade.bitcoin_transfer_method === "onchain" ? tExchange("transferMethod.onchain") : tExchange("transferMethod.lightning")}`
+                                : `${tExchange("bookingStep.sendVia")} ${trade.bitcoin_transfer_method === "onchain" ? tExchange("transferMethod.onchain") : tExchange("transferMethod.lightning")}`}
                             </span>
                             <span style={tradeCardStyles.amount}>
                               {formatEur(trade.eur_amount)}
@@ -132,7 +137,7 @@ export default function TradesPage() {
                             </span>
                           </div>
                           <div style={tradeCardStyles.rateRow}>
-                            <span style={tradeCardStyles.rateLabel}>Rate:</span>
+                            <span style={tradeCardStyles.rateLabel}>{t("trade.rate")}</span>
                             <span style={tradeCardStyles.rateValue}>
                               €
                               {trade.agreed_price_eur.toLocaleString("de-DE", {
@@ -153,7 +158,7 @@ export default function TradesPage() {
                               onConfirm={() => handleCancel(trade.public_id)}
                               onCancel={() => setConfirmCancelId(null)}
                               onActionClick={() => setConfirmCancelId(trade.public_id)}
-                              actionLabel="Cancel"
+                              actionLabel={t("trade.cancel")}
                               isLoading={cancellingId === trade.public_id}
                               confirmVariant="danger"
                               confirmButtonStyle={styles.confirmButton}
@@ -166,7 +171,7 @@ export default function TradesPage() {
                             }}
                             style={styles.viewDetailsButton}
                           >
-                            View Details
+                            {t("trade.viewDetails")}
                           </button>
                         </div>
                       </div>
@@ -181,7 +186,7 @@ export default function TradesPage() {
           {pastOrFinalTrades.length > 0 && (
             <div style={styles.section}>
               <h2 style={typographyStyles.sectionTitleMuted}>
-                History ({pastOrFinalTrades.length})
+                {t("page.history", { count: pastOrFinalTrades.length })}
               </h2>
               <div style={tradeCardStyles.tradeList}>
                 {pastOrFinalTrades.map((trade) => {
diff --git a/frontend/locales/ca/exchange.json b/frontend/locales/ca/exchange.json
index 2362763..0fa6c43 100644
--- a/frontend/locales/ca/exchange.json
+++ b/frontend/locales/ca/exchange.json
@@ -8,10 +8,70 @@
   },
   "direction": {
     "buy": "COMPRAR BTC",
-    "sell": "VENDRE BTC"
+    "sell": "VENDRE BTC",
+    "buyShort": "Comprar BTC",
+    "sellShort": "Vendre BTC"
   },
   "transferMethod": {
     "onchain": "Onchain",
     "lightning": "Lightning"
+  },
+  "page": {
+    "title": "Intercanviar Bitcoin",
+    "subtitle": "Compra o ven Bitcoin amb una prima del 5%",
+    "viewExistingTrade": "Veure la teva operació existent →"
+  },
+  "steps": {
+    "details": "Detalls de l'Intercanvi",
+    "booking": "Reservar Cita",
+    "confirm": "Confirmar"
+  },
+  "detailsStep": {
+    "paymentMethod": "Mètode de Pagament",
+    "required": "*",
+    "lightningThreshold": "Els pagaments Lightning només estan disponibles per importants fins a €{max}",
+    "amount": "Quantitat (EUR)",
+    "summaryBuy": "Compres {sats}, vens {eur}",
+    "summarySell": "Compres {eur}, vens {sats}",
+    "continueToBooking": "Continuar a Reserva"
+  },
+  "bookingStep": {
+    "yourExchange": "El Teu Intercanvi",
+    "edit": "Editar",
+    "buy": "Comprar",
+    "sell": "Vendre",
+    "receiveVia": "Rebre via",
+    "sendVia": "Enviar via",
+    "selectDate": "Seleccionar una Data",
+    "existingTradeWarning": "Ja tens una operació reservada en aquest dia. Només pots reservar una operació per dia.",
+    "viewExistingTrade": "Veure la teva operació existent →",
+    "availableSlots": "Espais Disponibles per a",
+    "loadingSlots": "Carregant espais...",
+    "noSlots": "No hi ha espais disponibles per a aquesta data"
+  },
+  "confirmationStep": {
+    "appointment": "Cita",
+    "edit": "Editar",
+    "confirmTrade": "Confirmar Operació",
+    "time": "Hora:",
+    "direction": "Direcció:",
+    "eur": "EUR:",
+    "btc": "BTC:",
+    "rate": "Taxa:",
+    "payment": "Pagament:",
+    "receiveVia": "Rebre via",
+    "sendVia": "Enviar via",
+    "booking": "Reservant...",
+    "priceStale": "Preu Desactualitzat",
+    "confirmBuy": "Confirmar Compra",
+    "confirmSell": "Confirmar Venda",
+    "back": "Enrere"
+  },
+  "priceDisplay": {
+    "loading": "Carregant preu...",
+    "market": "Mercat:",
+    "ourPrice": "El nostre preu:",
+    "updated": "Actualitzat",
+    "stale": "(desactualitzat)"
   }
 }
diff --git a/frontend/locales/ca/invites.json b/frontend/locales/ca/invites.json
new file mode 100644
index 0000000..dea790b
--- /dev/null
+++ b/frontend/locales/ca/invites.json
@@ -0,0 +1,17 @@
+{
+  "page": {
+    "title": "Les Meves Invitacions",
+    "subtitle": "Comparteix els teus codis d'invitació amb amics perquè s'uneixin",
+    "noInvites": "Encara no tens invitacions.",
+    "noInvitesHint": "Contacta amb un administrador si necessites codis d'invitació per compartir.",
+    "available": "Disponibles ({count})",
+    "availableHint": "Comparteix aquests enllaços amb les persones que vulguis convidar",
+    "used": "Usades ({count})",
+    "revoked": "Revocades ({count})",
+    "copyLink": "Copiar Enllaç",
+    "copied": "Copiat!",
+    "usedBy": "per {email}",
+    "usedStatus": "Usada",
+    "revokedStatus": "Revocada"
+  }
+}
diff --git a/frontend/locales/ca/profile.json b/frontend/locales/ca/profile.json
new file mode 100644
index 0000000..30edb9c
--- /dev/null
+++ b/frontend/locales/ca/profile.json
@@ -0,0 +1,33 @@
+{
+  "page": {
+    "title": "El Meu Perfil",
+    "subtitle": "Gestiona la teva informació de contacte"
+  },
+  "form": {
+    "email": "Correu Electrònic",
+    "emailHint": "Aquest és el teu correu d'inici de sessió i no es pot canviar aquí.",
+    "invitedBy": "Convidat Per",
+    "invitedByHint": "L'usuari que et va convidar a unir-te.",
+    "readOnly": "Només lectura",
+    "contactDetails": "Detalls de Contacte",
+    "contactDetailsHint": "Aquests són només per a fins de comunicació — no afectaran el teu inici de sessió.",
+    "contactEmail": "Correu de Contacte",
+    "telegram": "Telegram",
+    "signal": "Signal",
+    "nostrNpub": "Nostr (npub)",
+    "saving": "Desant...",
+    "saveChanges": "Desar Canvis"
+  },
+  "messages": {
+    "loadError": "Error en carregar el perfil",
+    "saveSuccess": "Perfil desat amb èxit!",
+    "fixErrors": "Si us plau, corregeix els errors a continuació",
+    "networkError": "Error de xarxa. Si us plau, intenta-ho de nou."
+  },
+  "placeholders": {
+    "contactEmail": "alternate@example.com",
+    "telegram": "@username",
+    "signal": "username.01",
+    "nostrNpub": "npub1..."
+  }
+}
diff --git a/frontend/locales/ca/trades.json b/frontend/locales/ca/trades.json
new file mode 100644
index 0000000..547f9af
--- /dev/null
+++ b/frontend/locales/ca/trades.json
@@ -0,0 +1,16 @@
+{
+  "page": {
+    "title": "Les Meves Operacions",
+    "subtitle": "Veure i gestionar les teves operacions de Bitcoin",
+    "loadingTrades": "Carregant operacions...",
+    "noTrades": "Encara no tens operacions.",
+    "startTrading": "Començar a operar",
+    "upcoming": "Properes ({count})",
+    "history": "Historial ({count})"
+  },
+  "trade": {
+    "rate": "Taxa:",
+    "cancel": "Cancel·lar",
+    "viewDetails": "Veure Detalls"
+  }
+}
diff --git a/frontend/locales/en/exchange.json b/frontend/locales/en/exchange.json
index 13297c6..7e1d4ee 100644
--- a/frontend/locales/en/exchange.json
+++ b/frontend/locales/en/exchange.json
@@ -8,10 +8,70 @@
   },
   "direction": {
     "buy": "BUY BTC",
-    "sell": "SELL BTC"
+    "sell": "SELL BTC",
+    "buyShort": "Buy BTC",
+    "sellShort": "Sell BTC"
   },
   "transferMethod": {
     "onchain": "Onchain",
     "lightning": "Lightning"
+  },
+  "page": {
+    "title": "Exchange Bitcoin",
+    "subtitle": "Buy or sell Bitcoin with a 5% premium",
+    "viewExistingTrade": "View your existing trade →"
+  },
+  "steps": {
+    "details": "Exchange Details",
+    "booking": "Book Appointment",
+    "confirm": "Confirm"
+  },
+  "detailsStep": {
+    "paymentMethod": "Payment Method",
+    "required": "*",
+    "lightningThreshold": "Lightning payments are only available for amounts up to €{max}",
+    "amount": "Amount (EUR)",
+    "summaryBuy": "You buy {sats}, you sell {eur}",
+    "summarySell": "You buy {eur}, you sell {sats}",
+    "continueToBooking": "Continue to Booking"
+  },
+  "bookingStep": {
+    "yourExchange": "Your Exchange",
+    "edit": "Edit",
+    "buy": "Buy",
+    "sell": "Sell",
+    "receiveVia": "Receive via",
+    "sendVia": "Send via",
+    "selectDate": "Select a Date",
+    "existingTradeWarning": "You already have a trade booked on this day. You can only book one trade per day.",
+    "viewExistingTrade": "View your existing trade →",
+    "availableSlots": "Available Slots for",
+    "loadingSlots": "Loading slots...",
+    "noSlots": "No available slots for this date"
+  },
+  "confirmationStep": {
+    "appointment": "Appointment",
+    "edit": "Edit",
+    "confirmTrade": "Confirm Trade",
+    "time": "Time:",
+    "direction": "Direction:",
+    "eur": "EUR:",
+    "btc": "BTC:",
+    "rate": "Rate:",
+    "payment": "Payment:",
+    "receiveVia": "Receive via",
+    "sendVia": "Send via",
+    "booking": "Booking...",
+    "priceStale": "Price Stale",
+    "confirmBuy": "Confirm Buy",
+    "confirmSell": "Confirm Sell",
+    "back": "Back"
+  },
+  "priceDisplay": {
+    "loading": "Loading price...",
+    "market": "Market:",
+    "ourPrice": "Our price:",
+    "updated": "Updated",
+    "stale": "(stale)"
   }
 }
diff --git a/frontend/locales/en/invites.json b/frontend/locales/en/invites.json
new file mode 100644
index 0000000..0961e8e
--- /dev/null
+++ b/frontend/locales/en/invites.json
@@ -0,0 +1,17 @@
+{
+  "page": {
+    "title": "My Invites",
+    "subtitle": "Share your invite codes with friends to let them join",
+    "noInvites": "You don't have any invites yet.",
+    "noInvitesHint": "Contact an admin if you need invite codes to share.",
+    "available": "Available ({count})",
+    "availableHint": "Share these links with people you want to invite",
+    "used": "Used ({count})",
+    "revoked": "Revoked ({count})",
+    "copyLink": "Copy Link",
+    "copied": "Copied!",
+    "usedBy": "by {email}",
+    "usedStatus": "Used",
+    "revokedStatus": "Revoked"
+  }
+}
diff --git a/frontend/locales/en/profile.json b/frontend/locales/en/profile.json
new file mode 100644
index 0000000..4e0cf03
--- /dev/null
+++ b/frontend/locales/en/profile.json
@@ -0,0 +1,33 @@
+{
+  "page": {
+    "title": "My Profile",
+    "subtitle": "Manage your contact information"
+  },
+  "form": {
+    "email": "Email",
+    "emailHint": "This is your login email and cannot be changed here.",
+    "invitedBy": "Invited By",
+    "invitedByHint": "The user who invited you to join.",
+    "readOnly": "Read only",
+    "contactDetails": "Contact Details",
+    "contactDetailsHint": "These are for communication purposes only — they won't affect your login.",
+    "contactEmail": "Contact Email",
+    "telegram": "Telegram",
+    "signal": "Signal",
+    "nostrNpub": "Nostr (npub)",
+    "saving": "Saving...",
+    "saveChanges": "Save Changes"
+  },
+  "messages": {
+    "loadError": "Failed to load profile",
+    "saveSuccess": "Profile saved successfully!",
+    "fixErrors": "Please fix the errors below",
+    "networkError": "Network error. Please try again."
+  },
+  "placeholders": {
+    "contactEmail": "alternate@example.com",
+    "telegram": "@username",
+    "signal": "username.01",
+    "nostrNpub": "npub1..."
+  }
+}
diff --git a/frontend/locales/en/trades.json b/frontend/locales/en/trades.json
new file mode 100644
index 0000000..a4917a7
--- /dev/null
+++ b/frontend/locales/en/trades.json
@@ -0,0 +1,16 @@
+{
+  "page": {
+    "title": "My Trades",
+    "subtitle": "View and manage your Bitcoin trades",
+    "loadingTrades": "Loading trades...",
+    "noTrades": "You don't have any trades yet.",
+    "startTrading": "Start trading",
+    "upcoming": "Upcoming ({count})",
+    "history": "History ({count})"
+  },
+  "trade": {
+    "rate": "Rate:",
+    "cancel": "Cancel",
+    "viewDetails": "View Details"
+  }
+}
diff --git a/frontend/locales/es/exchange.json b/frontend/locales/es/exchange.json
index f755651..78a8a6d 100644
--- a/frontend/locales/es/exchange.json
+++ b/frontend/locales/es/exchange.json
@@ -8,10 +8,70 @@
   },
   "direction": {
     "buy": "COMPRAR BTC",
-    "sell": "VENDER BTC"
+    "sell": "VENDER BTC",
+    "buyShort": "Comprar BTC",
+    "sellShort": "Vender BTC"
   },
   "transferMethod": {
     "onchain": "Onchain",
     "lightning": "Lightning"
+  },
+  "page": {
+    "title": "Intercambiar Bitcoin",
+    "subtitle": "Compra o vende Bitcoin con una prima del 5%",
+    "viewExistingTrade": "Ver tu operación existente →"
+  },
+  "steps": {
+    "details": "Detalles del Intercambio",
+    "booking": "Reservar Cita",
+    "confirm": "Confirmar"
+  },
+  "detailsStep": {
+    "paymentMethod": "Método de Pago",
+    "required": "*",
+    "lightningThreshold": "Los pagos Lightning solo están disponibles para montos de hasta €{max}",
+    "amount": "Cantidad (EUR)",
+    "summaryBuy": "Compras {sats}, vendes {eur}",
+    "summarySell": "Compras {eur}, vendes {sats}",
+    "continueToBooking": "Continuar a Reserva"
+  },
+  "bookingStep": {
+    "yourExchange": "Tu Intercambio",
+    "edit": "Editar",
+    "buy": "Comprar",
+    "sell": "Vender",
+    "receiveVia": "Recibir vía",
+    "sendVia": "Enviar vía",
+    "selectDate": "Seleccionar una Fecha",
+    "existingTradeWarning": "Ya tienes una operación reservada en este día. Solo puedes reservar una operación por día.",
+    "viewExistingTrade": "Ver tu operación existente →",
+    "availableSlots": "Espacios Disponibles para",
+    "loadingSlots": "Cargando espacios...",
+    "noSlots": "No hay espacios disponibles para esta fecha"
+  },
+  "confirmationStep": {
+    "appointment": "Cita",
+    "edit": "Editar",
+    "confirmTrade": "Confirmar Operación",
+    "time": "Hora:",
+    "direction": "Dirección:",
+    "eur": "EUR:",
+    "btc": "BTC:",
+    "rate": "Tasa:",
+    "payment": "Pago:",
+    "receiveVia": "Recibir vía",
+    "sendVia": "Enviar vía",
+    "booking": "Reservando...",
+    "priceStale": "Precio Desactualizado",
+    "confirmBuy": "Confirmar Compra",
+    "confirmSell": "Confirmar Venta",
+    "back": "Atrás"
+  },
+  "priceDisplay": {
+    "loading": "Cargando precio...",
+    "market": "Mercado:",
+    "ourPrice": "Nuestro precio:",
+    "updated": "Actualizado",
+    "stale": "(desactualizado)"
   }
 }
diff --git a/frontend/locales/es/invites.json b/frontend/locales/es/invites.json
new file mode 100644
index 0000000..e8e3ca7
--- /dev/null
+++ b/frontend/locales/es/invites.json
@@ -0,0 +1,17 @@
+{
+  "page": {
+    "title": "Mis Invitaciones",
+    "subtitle": "Comparte tus códigos de invitación con amigos para que se unan",
+    "noInvites": "Aún no tienes invitaciones.",
+    "noInvitesHint": "Contacta con un administrador si necesitas códigos de invitación para compartir.",
+    "available": "Disponibles ({count})",
+    "availableHint": "Comparte estos enlaces con las personas que quieras invitar",
+    "used": "Usadas ({count})",
+    "revoked": "Revocadas ({count})",
+    "copyLink": "Copiar Enlace",
+    "copied": "¡Copiado!",
+    "usedBy": "por {email}",
+    "usedStatus": "Usada",
+    "revokedStatus": "Revocada"
+  }
+}
diff --git a/frontend/locales/es/profile.json b/frontend/locales/es/profile.json
new file mode 100644
index 0000000..dd99fe3
--- /dev/null
+++ b/frontend/locales/es/profile.json
@@ -0,0 +1,33 @@
+{
+  "page": {
+    "title": "Mi Perfil",
+    "subtitle": "Gestiona tu información de contacto"
+  },
+  "form": {
+    "email": "Correo Electrónico",
+    "emailHint": "Este es tu correo de inicio de sesión y no se puede cambiar aquí.",
+    "invitedBy": "Invitado Por",
+    "invitedByHint": "El usuario que te invitó a unirte.",
+    "readOnly": "Solo lectura",
+    "contactDetails": "Detalles de Contacto",
+    "contactDetailsHint": "Estos son solo para fines de comunicación — no afectarán tu inicio de sesión.",
+    "contactEmail": "Correo de Contacto",
+    "telegram": "Telegram",
+    "signal": "Signal",
+    "nostrNpub": "Nostr (npub)",
+    "saving": "Guardando...",
+    "saveChanges": "Guardar Cambios"
+  },
+  "messages": {
+    "loadError": "Error al cargar el perfil",
+    "saveSuccess": "¡Perfil guardado exitosamente!",
+    "fixErrors": "Por favor corrige los errores a continuación",
+    "networkError": "Error de red. Por favor intenta de nuevo."
+  },
+  "placeholders": {
+    "contactEmail": "alternate@example.com",
+    "telegram": "@username",
+    "signal": "username.01",
+    "nostrNpub": "npub1..."
+  }
+}
diff --git a/frontend/locales/es/trades.json b/frontend/locales/es/trades.json
new file mode 100644
index 0000000..40c22c4
--- /dev/null
+++ b/frontend/locales/es/trades.json
@@ -0,0 +1,16 @@
+{
+  "page": {
+    "title": "Mis Operaciones",
+    "subtitle": "Ver y gestionar tus operaciones de Bitcoin",
+    "loadingTrades": "Cargando operaciones...",
+    "noTrades": "Aún no tienes operaciones.",
+    "startTrading": "Empezar a operar",
+    "upcoming": "Próximas ({count})",
+    "history": "Historial ({count})"
+  },
+  "trade": {
+    "rate": "Tasa:",
+    "cancel": "Cancelar",
+    "viewDetails": "Ver Detalles"
+  }
+}