fix(shopinbit): mobile back-button handling and car research payment flow

diff --git a/lib/pages/shopinbit/shopinbit_car_fee_view.dart b/lib/pages/shopinbit/shopinbit_car_fee_view.dart
index 82aa18e..13a2378 100644
--- a/lib/pages/shopinbit/shopinbit_car_fee_view.dart
+++ b/lib/pages/shopinbit/shopinbit_car_fee_view.dart
@@ -12,8 +12,10 @@ import '../../services/shopinbit/src/models/car_research.dart';
 import '../../themes/stack_colors.dart';
 import '../../utilities/assets.dart';
 import '../../utilities/constants.dart';
+import '../../utilities/logger.dart';
 import '../../utilities/text_styles.dart';
 import '../../utilities/util.dart';
+import '../more_view/services_view.dart';
 import '../../widgets/background.dart';
 import '../../widgets/custom_buttons/app_bar_icon_button.dart';
 import '../../widgets/desktop/desktop_dialog.dart';
@@ -22,6 +24,7 @@ import '../../widgets/desktop/primary_button.dart';
 import '../../widgets/rounded_white_container.dart';
 import '../../widgets/stack_text_field.dart';
 import 'shopinbit_car_research_payment_view.dart';
+import 'shopinbit_step_2.dart';
 
 class ShopInBitCarFeeView extends StatefulWidget {
   const ShopInBitCarFeeView({super.key, required this.model});
@@ -98,6 +101,22 @@ class _ShopInBitCarFeeViewState extends State<ShopInBitCarFeeView> {
     super.dispose();
   }
 
+  void _popToStep2() {
+    Navigator.of(context).popUntil((route) {
+      final name = route.settings.name;
+      if (name == ShopInBitStep2.routeName) {
+        return true;
+      }
+      if (name == ServicesView.routeName) {
+        return true;
+      }
+      if (route.isFirst) {
+        return true;
+      }
+      return false;
+    });
+  }
+
   Future<void> _fetchCountries() async {
     setState(() => _loadingBillingCountries = true);
     try {
@@ -204,26 +223,61 @@ class _ShopInBitCarFeeViewState extends State<ShopInBitCarFeeView> {
     }
   }
 
+  String? _parseBip21Amount(String uri) {
+    try {
+      // Parse amount from payment URI query params.
+      final qIdx = uri.indexOf('?');
+      if (qIdx < 0) return null;
+      final query = uri.substring(qIdx + 1);
+      final params = Uri.splitQueryString(query);
+      return params['amount'] ?? params['tx_amount'];
+    } catch (_) {
+      return null;
+    }
+  }
+
   Future<void> _loadFee(CarResearchInvoice invoice) async {
+    // Keep status call for visibility into any future API changes surfacing
+    // a fee field. Today the endpoint returns only {status, additional}, so
+    // we source the displayed amount from the BIP21 payment URIs instead.
     try {
       final resp = await ShopInBitService.instance.client
           .getCarResearchInvoiceStatus(invoice.btcpayInvoice);
       if (resp.hasError || resp.value == null) {
-        if (mounted) setState(() => _displayedFee = "—");
-        return;
+        Logging.instance.i(
+          "CarResearch status response (car_fee_view): error "
+          "${resp.exception?.message}",
+        );
+      } else {
+        Logging.instance.i(
+          "CarResearch status response (car_fee_view): ${resp.value}",
+        );
       }
-      final data = resp.value!;
-      final parsed = (data["fee"] ??
-              data["amount"] ??
-              data["total"] ??
-              data["customer_price"])
-          ?.toString();
-      if (mounted) {
-        setState(() => _displayedFee = parsed ?? "—");
+    } catch (e) {
+      Logging.instance.i(
+        "CarResearch status response (car_fee_view): threw $e",
+      );
+    }
+
+    // Primary fee source: parse BIP21 `amount` query param from paymentLinks.
+    Logging.instance.i(
+      "CarResearch paymentLinks (car_fee_view): ${invoice.paymentLinks}",
+    );
+    try {
+      for (final entry in invoice.paymentLinks.entries) {
+        final parsed = _parseBip21Amount(entry.value);
+        if (parsed != null && parsed.isNotEmpty) {
+          if (mounted) {
+            setState(() => _displayedFee = "$parsed ${entry.key.toUpperCase()}");
+          }
+          return;
+        }
       }
     } catch (_) {
-      if (mounted) setState(() => _displayedFee = "—");
+      // Leave placeholder in place.
     }
+    // No parse succeeded — leave the existing "50.00 EUR" business-rule
+    // placeholder in place rather than showing "—".
   }
 
   Widget _buildField({
@@ -508,29 +562,38 @@ class _ShopInBitCarFeeViewState extends State<ShopInBitCarFeeView> {
     }
 
     return Background(
-      child: Scaffold(
-        backgroundColor: Theme.of(context).extension<StackColors>()!.background,
-        appBar: AppBar(
-          leading: AppBarBackButton(
-            onPressed: () => Navigator.of(context).pop(),
+      child: PopScope(
+        canPop: false,
+        onPopInvokedWithResult: (bool didPop, dynamic result) {
+          if (!didPop) {
+            _popToStep2();
+          }
+        },
+        child: Scaffold(
+          backgroundColor:
+              Theme.of(context).extension<StackColors>()!.background,
+          appBar: AppBar(
+            leading: AppBarBackButton(
+              onPressed: _popToStep2,
+            ),
+            title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
           ),
-          title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
-        ),
-        body: SafeArea(
-          child: LayoutBuilder(
-            builder: (context, constraints) {
-              return Padding(
-                padding: const EdgeInsets.all(16),
-                child: SingleChildScrollView(
-                  child: ConstrainedBox(
-                    constraints: BoxConstraints(
-                      minHeight: constraints.maxHeight - 32,
+          body: SafeArea(
+            child: LayoutBuilder(
+              builder: (context, constraints) {
+                return Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: SingleChildScrollView(
+                    child: ConstrainedBox(
+                      constraints: BoxConstraints(
+                        minHeight: constraints.maxHeight - 32,
+                      ),
+                      child: IntrinsicHeight(child: content),
                     ),
-                    child: IntrinsicHeight(child: content),
                   ),
-                ),
-              );
-            },
+                );
+              },
+            ),
           ),
         ),
       ),
diff --git a/lib/pages/shopinbit/shopinbit_car_research_payment_view.dart b/lib/pages/shopinbit/shopinbit_car_research_payment_view.dart
index 96c2c86..e37a07a 100644
--- a/lib/pages/shopinbit/shopinbit_car_research_payment_view.dart
+++ b/lib/pages/shopinbit/shopinbit_car_research_payment_view.dart
@@ -1,17 +1,28 @@
 import 'dart:async';
 
+import 'package:decimal/decimal.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 
+import '../../app_config.dart';
 import '../../db/isar/main_db.dart';
+import '../../models/isar/models/ethereum/eth_contract.dart';
 import '../../models/shopinbit/shopinbit_order_model.dart';
 import '../../notifications/show_flush_bar.dart';
+import '../../providers/providers.dart';
+import '../../route_generator.dart';
 import '../../services/shopinbit/shopinbit_service.dart';
 import '../../services/shopinbit/src/models/car_research.dart';
 import '../../themes/stack_colors.dart';
+import '../../utilities/address_utils.dart';
+import '../../utilities/amount/amount.dart';
 import '../../utilities/assets.dart';
+import '../../utilities/logger.dart';
 import '../../utilities/text_styles.dart';
 import '../../utilities/util.dart';
+import '../../wallets/crypto_currency/crypto_currency.dart';
+import '../more_view/services_view.dart';
 import '../../widgets/background.dart';
 import '../../widgets/custom_buttons/app_bar_icon_button.dart';
 import '../../widgets/desktop/desktop_dialog.dart';
@@ -20,8 +31,10 @@ import '../../widgets/desktop/primary_button.dart';
 import '../../widgets/qr.dart';
 import '../../widgets/rounded_white_container.dart';
 import 'shopinbit_order_created.dart';
+import 'shopinbit_send_from_view.dart';
+import 'shopinbit_tickets_view.dart';
 
-class ShopInBitCarResearchPaymentView extends StatefulWidget {
+class ShopInBitCarResearchPaymentView extends ConsumerStatefulWidget {
   const ShopInBitCarResearchPaymentView({
     super.key,
     required this.model,
@@ -34,22 +47,30 @@ class ShopInBitCarResearchPaymentView extends StatefulWidget {
   final CarResearchInvoice invoice;
 
   @override
-  State<ShopInBitCarResearchPaymentView> createState() =>
+  ConsumerState<ShopInBitCarResearchPaymentView> createState() =>
       _ShopInBitCarResearchPaymentViewState();
 }
 
 class _ShopInBitCarResearchPaymentViewState
-    extends State<ShopInBitCarResearchPaymentView> {
+    extends ConsumerState<ShopInBitCarResearchPaymentView> {
   static const Set<String> _terminalStates = {
+    // concierge heritage
     "paid",
     "paid_over",
     "paid_late",
     "payment_processing",
+    // BTCPay / car research likely
+    "settled",
+    "confirmed",
+    "complete",
+    "completed",
+    "finalized",
   };
 
   Timer? _pollTimer;
   Map<String, dynamic>? _status;
   bool _logging = false;
+  bool _checking = false;
   String _statusString = "ready_to_pay";
   List<String> _methods = [];
   List<String> _addresses = [];
@@ -58,17 +79,203 @@ class _ShopInBitCarResearchPaymentViewState
   String get _currentAddress =>
       _selectedMethod < _addresses.length ? _addresses[_selectedMethod] : "";
 
-  bool get _isTerminal => _terminalStates.contains(_statusString);
+  bool get _isTerminal {
+    final s = _statusString.toLowerCase().trim();
+    return _terminalStates.contains(s);
+  }
+
+  bool get _payNowEnabled => !_isTerminal && !_logging && !_checking;
+
+  void _confirmPayment() {
+    _pollTimer?.cancel();
+    final method = _methods[_selectedMethod];
+    final ticker = method.toUpperCase();
+
+    final coin = AppConfig.getCryptoCurrencyForTicker(ticker);
+
+    String address = "";
+    Amount? amount;
+    EthContract? tokenContract;
+
+    if (_currentAddress.isNotEmpty) {
+      final parsed = AddressUtils.parsePaymentUri(_currentAddress);
+
+      if (parsed?.address != null && parsed!.address.isNotEmpty) {
+        address = parsed.address;
+      } else {
+        final raw = _currentAddress;
+        final colonIdx = raw.indexOf(':');
+        if (colonIdx != -1) {
+          final afterScheme = raw.substring(colonIdx + 1);
+          final qIdx = afterScheme.indexOf('?');
+          address = qIdx != -1 ? afterScheme.substring(0, qIdx) : afterScheme;
+        } else {
+          address = raw;
+        }
+      }
+
+      String? amountStr = parsed?.amount;
+      if (amountStr == null || amountStr.isEmpty) {
+        final uri = Uri.tryParse(_currentAddress);
+        if (uri != null) {
+          amountStr = uri.queryParameters['amount'];
+        }
+      }
+      // Car research flow has no concierge PaymentInfo.due fallback.
+
+      final int fractionDigits;
+      if (coin != null) {
+        fractionDigits = coin.fractionDigits;
+      } else if (ticker == "USDT") {
+        fractionDigits = 6;
+      } else {
+        fractionDigits = 8;
+      }
+
+      if (amountStr != null && amountStr.isNotEmpty) {
+        try {
+          amount = Amount.fromDecimal(
+            Decimal.parse(amountStr),
+            fractionDigits: fractionDigits,
+          );
+        } catch (_) {}
+      }
+    }
+
+    if (coin != null && address.isNotEmpty) {
+      _navigateToSendFrom(coin: coin, amount: amount, address: address);
+      return;
+    }
+
+    if (ticker == "USDT" && address.isNotEmpty) {
+      const usdtAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
+      tokenContract = ref.read(mainDBProvider).getEthContractSync(usdtAddress);
+      if (tokenContract != null) {
+        final ethCoin = AppConfig.getCryptoCurrencyForTicker("ETH");
+        if (ethCoin != null) {
+          _navigateToSendFrom(
+            coin: ethCoin,
+            amount: amount,
+            address: address,
+            tokenContract: tokenContract,
+          );
+          return;
+        }
+      }
+    }
+
+    // No compatible wallet coin found — surface an info flushbar and keep
+    // the user on this screen so they can pay externally and then use the
+    // "CHECK FOR PAYMENT" button.
+    unawaited(
+      showFloatingFlushBar(
+        type: FlushBarType.info,
+        message:
+            "No compatible wallet for $method. "
+            "Pay externally, then tap CHECK FOR PAYMENT.",
+        context: context,
+      ),
+    );
+  }
+
+  void _navigateToSendFrom({
+    required CryptoCurrency coin,
+    required Amount? amount,
+    required String address,
+    EthContract? tokenContract,
+  }) {
+    if (Util.isDesktop) {
+      Navigator.of(context, rootNavigator: true).pop();
+      unawaited(
+        showDialog<void>(
+          context: context,
+          builder: (_) => ShopInBitSendFromView(
+            coin: coin,
+            amount: amount,
+            address: address,
+            model: widget.model,
+            shouldPopRoot: true,
+            tokenContract: tokenContract,
+          ),
+        ),
+      );
+    } else {
+      Navigator.of(context).push(
+        RouteGenerator.getRoute<dynamic>(
+          shouldUseMaterialRoute: RouteGenerator.useMaterialPageRoute,
+          builder: (_) => ShopInBitSendFromView(
+            coin: coin,
+            amount: amount,
+            address: address,
+            model: widget.model,
+            tokenContract: tokenContract,
+          ),
+          settings: const RouteSettings(name: ShopInBitSendFromView.routeName),
+        ),
+      );
+    }
+  }
+
+  Future<void> _checkForPayment() async {
+    if (_checking || _logging) return;
+    setState(() => _checking = true);
+    try {
+      await _pollStatus();
+      if (!mounted) return;
+      if (!_isTerminal && !_logging) {
+        unawaited(
+          showFloatingFlushBar(
+            type: FlushBarType.info,
+            message:
+                "Payment not yet confirmed. Please wait a moment and try again.",
+            context: context,
+          ),
+        );
+      }
+    } finally {
+      if (mounted) setState(() => _checking = false);
+    }
+  }
+
+  String? _parseBip21Amount(String uri) {
+    try {
+      // Parse amount from payment URI query params.
+      final qIdx = uri.indexOf('?');
+      if (qIdx < 0) return null;
+      final query = uri.substring(qIdx + 1);
+      final params = Uri.splitQueryString(query);
+      return params['amount'] ?? params['tx_amount'];
+    } catch (_) {
+      return null;
+    }
+  }
 
   String get _displayedFee {
-    final s = _status;
-    if (s == null) return "—";
-    return (s["fee"] ??
-            s["amount"] ??
-            s["total"] ??
-            s["customer_price"] ??
-            "—")
-        .toString();
+    // API status endpoint does not expose a fee field (confirmed: returns
+    // only {status, additional}). Parse the amount from the BIP21 payment
+    // URI for the currently-selected method, fall back to the 50.00 EUR
+    // business-rule value if no parse succeeds.
+    final links = widget.invoice.paymentLinks;
+    if (_selectedMethod < _methods.length) {
+      final methodKey = _methods[_selectedMethod];
+      // _methods holds upper-cased keys; links map may be case-sensitive.
+      String? uri = links[methodKey];
+      if (uri == null) {
+        for (final entry in links.entries) {
+          if (entry.key.toUpperCase() == methodKey) {
+            uri = entry.value;
+            break;
+          }
+        }
+      }
+      if (uri != null) {
+        final parsed = _parseBip21Amount(uri);
+        if (parsed != null && parsed.isNotEmpty) {
+          return "$parsed $methodKey";
+        }
+      }
+    }
+    return "50.00 EUR";
   }
 
   String get _statusLabel {
@@ -105,6 +312,22 @@ class _ShopInBitCarResearchPaymentViewState
     super.dispose();
   }
 
+  void _popToTickets() {
+    Navigator.of(context).popUntil((route) {
+      final name = route.settings.name;
+      if (name == ShopInBitTicketsView.routeName) {
+        return true;
+      }
+      if (name == ServicesView.routeName) {
+        return true;
+      }
+      if (route.isFirst) {
+        return true;
+      }
+      return false;
+    });
+  }
+
   Future<void> _pollStatus() async {
     try {
       final resp = await ShopInBitService.instance.client
@@ -123,6 +346,13 @@ class _ShopInBitCarResearchPaymentViewState
         return;
       }
       if (!mounted) return;
+      Logging.instance.i(
+        "CarResearch status response (payment_view): ${resp.value}",
+      );
+      Logging.instance.i(
+        "CarResearch paymentLinks (payment_view): "
+        "${widget.invoice.paymentLinks}",
+      );
       setState(() {
         _status = resp.value!;
         _statusString = _status!["status"]?.toString() ?? _statusString;
@@ -219,6 +449,31 @@ class _ShopInBitCarResearchPaymentViewState
   Widget build(BuildContext context) {
     final isDesktop = Util.isDesktop;
 
+    final ticker = _selectedMethod < _methods.length
+        ? _methods[_selectedMethod].toUpperCase()
+        : "";
+
+    bool hasWallets = false;
+    if (ticker == "USDT") {
+      const usdtAddress = "0xdac17f958d2ee523a2206206994597c13d831ec7";
+      hasWallets = ref
+          .watch(pWallets)
+          .wallets
+          .any(
+            (w) =>
+                w.info.coin is Ethereum &&
+                w.info.tokenContractAddresses.contains(usdtAddress),
+          );
+    } else {
+      final coin = AppConfig.getCryptoCurrencyForTicker(ticker);
+      if (coin != null) {
+        hasWallets = ref
+            .watch(pWallets)
+            .wallets
+            .any((e) => e.info.coin == coin);
+      }
+    }
+
     final methodSelector = _methods.length <= 1
         ? Padding(
             padding: const EdgeInsets.symmetric(vertical: 10),
@@ -399,11 +654,17 @@ class _ShopInBitCarResearchPaymentViewState
           ),
         const Spacer(),
         PrimaryButton(
-          label: "I've paid",
-          enabled: !_logging,
-          onPressed: _logging ? null : () => unawaited(_logPayment()),
+          label: _checking
+              ? "Checking..."
+              : (hasWallets ? "PAY NOW" : "CHECK FOR PAYMENT"),
+          enabled: _payNowEnabled,
+          onPressed: _payNowEnabled
+              ? (hasWallets
+                    ? _confirmPayment
+                    : () => unawaited(_checkForPayment()))
+              : null,
         ),
-      ],
+],
     );
 
     if (isDesktop) {
@@ -440,31 +701,39 @@ class _ShopInBitCarResearchPaymentViewState
     }
 
     return Background(
-      child: Scaffold(
-        backgroundColor: Theme.of(
-          context,
-        ).extension<StackColors>()!.background,
-        appBar: AppBar(
-          leading: AppBarBackButton(
-            onPressed: () => Navigator.of(context).pop(),
+      child: PopScope(
+        canPop: false,
+        onPopInvokedWithResult: (bool didPop, dynamic result) {
+          if (!didPop) {
+            _popToTickets();
+          }
+        },
+        child: Scaffold(
+          backgroundColor: Theme.of(
+            context,
+          ).extension<StackColors>()!.background,
+          appBar: AppBar(
+            leading: AppBarBackButton(
+              onPressed: _popToTickets,
+            ),
+            title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
           ),
-          title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
-        ),
-        body: SafeArea(
-          child: LayoutBuilder(
-            builder: (context, constraints) {
-              return Padding(
-                padding: const EdgeInsets.all(16),
-                child: SingleChildScrollView(
-                  child: ConstrainedBox(
-                    constraints: BoxConstraints(
-                      minHeight: constraints.maxHeight - 32,
+          body: SafeArea(
+            child: LayoutBuilder(
+              builder: (context, constraints) {
+                return Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: SingleChildScrollView(
+                    child: ConstrainedBox(
+                      constraints: BoxConstraints(
+                        minHeight: constraints.maxHeight - 32,
+                      ),
+                      child: IntrinsicHeight(child: content),
                     ),
-                    child: IntrinsicHeight(child: content),
                   ),
-                ),
-              );
-            },
+                );
+              },
+            ),
           ),
         ),
       ),
diff --git a/lib/pages/shopinbit/shopinbit_step_2.dart b/lib/pages/shopinbit/shopinbit_step_2.dart
index 31abd1d..1fc04f4 100644
--- a/lib/pages/shopinbit/shopinbit_step_2.dart
+++ b/lib/pages/shopinbit/shopinbit_step_2.dart
@@ -36,6 +36,14 @@ class _ShopInBitStep2State extends State<ShopInBitStep2> {
     _selected = null;
   }
 
+  void _popBack() {
+    if (Util.isDesktop) {
+      Navigator.of(context, rootNavigator: true).pop();
+    } else {
+      Navigator.of(context).pop();
+    }
+  }
+
   void _continue() {
     widget.model.category = _selected;
     if (Util.isDesktop) {
@@ -228,29 +236,38 @@ class _ShopInBitStep2State extends State<ShopInBitStep2> {
     }
 
     return Background(
-      child: Scaffold(
-        backgroundColor: Theme.of(context).extension<StackColors>()!.background,
-        appBar: AppBar(
-          leading: AppBarBackButton(
-            onPressed: () => Navigator.of(context).pop(),
+      child: PopScope(
+        canPop: false,
+        onPopInvokedWithResult: (bool didPop, dynamic result) {
+          if (!didPop) {
+            _popBack();
+          }
+        },
+        child: Scaffold(
+          backgroundColor:
+              Theme.of(context).extension<StackColors>()!.background,
+          appBar: AppBar(
+            leading: AppBarBackButton(
+              onPressed: _popBack,
+            ),
+            title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
           ),
-          title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
-        ),
-        body: SafeArea(
-          child: LayoutBuilder(
-            builder: (context, constraints) {
-              return Padding(
-                padding: const EdgeInsets.all(16),
-                child: SingleChildScrollView(
-                  child: ConstrainedBox(
-                    constraints: BoxConstraints(
-                      minHeight: constraints.maxHeight - 32,
+          body: SafeArea(
+            child: LayoutBuilder(
+              builder: (context, constraints) {
+                return Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: SingleChildScrollView(
+                    child: ConstrainedBox(
+                      constraints: BoxConstraints(
+                        minHeight: constraints.maxHeight - 32,
+                      ),
+                      child: IntrinsicHeight(child: content),
                     ),
-                    child: IntrinsicHeight(child: content),
                   ),
-                ),
-              );
-            },
+                );
+              },
+            ),
           ),
         ),
       ),
diff --git a/lib/pages/shopinbit/shopinbit_step_4.dart b/lib/pages/shopinbit/shopinbit_step_4.dart
index 05577b8..6904b90 100644
--- a/lib/pages/shopinbit/shopinbit_step_4.dart
+++ b/lib/pages/shopinbit/shopinbit_step_4.dart
@@ -169,6 +169,14 @@ class _ShopInBitStep4State extends State<ShopInBitStep4> {
     super.dispose();
   }
 
+  void _popBack() {
+    if (Util.isDesktop) {
+      Navigator.of(context, rootNavigator: true).pop();
+    } else {
+      Navigator.of(context).pop();
+    }
+  }
+
   Future<void> _fetchCountries() async {
     setState(() => _loadingCountries = true);
     try {
@@ -583,29 +591,38 @@ class _ShopInBitStep4State extends State<ShopInBitStep4> {
     }
 
     return Background(
-      child: Scaffold(
-        backgroundColor: Theme.of(context).extension<StackColors>()!.background,
-        appBar: AppBar(
-          leading: AppBarBackButton(
-            onPressed: () => Navigator.of(context).pop(),
+      child: PopScope(
+        canPop: false,
+        onPopInvokedWithResult: (bool didPop, dynamic result) {
+          if (!didPop) {
+            _popBack();
+          }
+        },
+        child: Scaffold(
+          backgroundColor:
+              Theme.of(context).extension<StackColors>()!.background,
+          appBar: AppBar(
+            leading: AppBarBackButton(
+              onPressed: _popBack,
+            ),
+            title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
           ),
-          title: Text("ShopInBit", style: STextStyles.navBarTitle(context)),
-        ),
-        body: SafeArea(
-          child: LayoutBuilder(
-            builder: (context, constraints) {
-              return Padding(
-                padding: const EdgeInsets.all(16),
-                child: SingleChildScrollView(
-                  child: ConstrainedBox(
-                    constraints: BoxConstraints(
-                      minHeight: constraints.maxHeight - 32,
+          body: SafeArea(
+            child: LayoutBuilder(
+              builder: (context, constraints) {
+                return Padding(
+                  padding: const EdgeInsets.all(16),
+                  child: SingleChildScrollView(
+                    child: ConstrainedBox(
+                      constraints: BoxConstraints(
+                        minHeight: constraints.maxHeight - 32,
+                      ),
+                      child: IntrinsicHeight(child: content),
                     ),
-                    child: IntrinsicHeight(child: content),
                   ),
-                ),
-              );
-            },
+                );
+              },
+            ),
           ),
         ),
       ),