diff --git a/resources/views/partials/paystack-sheet.blade.php b/resources/views/partials/paystack-sheet.blade.php
index 9d0c4a4..a437868 100644
--- a/resources/views/partials/paystack-sheet.blade.php
+++ b/resources/views/partials/paystack-sheet.blade.php
@@ -8,8 +8,10 @@
     Optional overrides: $sheetTitle, $sheetSubtitle, $sheetFooter, $sheetAria, $iframeTitle
     Requires Alpine ancestor with: showSheet (bool), checkoutUrl (string).
 
-    Loads the provider authorization URL in-frame (verified via production Events/POS).
-    MoMo and other non-frameable providers should redirect instead of opening this sheet.
+    Paystack (checkout.paystack.com) sends X-Frame-Options: SAMEORIGIN and cannot be
+    embedded. Same-origin URLs (e.g. MoMo waiting pages) still load in an iframe.
+    External checkouts open in a named window, with an in-sheet Continue CTA as a
+    user-gesture fallback when the popup is blocked after an async fetch.
 --}}
 @php
     $audience = $audience ?? 'buyer';
@@ -35,10 +37,101 @@
     $iframeTitle = $iframeTitle ?? $defaults['iframe'];
     $sheetFooter = $sheetFooter ?? $defaults['footer'];
 @endphp
+@once
+<script>
+(function () {
+    if (window.LadillPayCheckout) return;
+
+    function isFrameable(url) {
+        if (!url) return false;
+        try {
+            return new URL(url, window.location.href).origin === window.location.origin;
+        } catch (e) {
+            return false;
+        }
+    }
+
+    function openCheckout(url) {
+        if (!url) return null;
+        try {
+            // Named window (no noopener) so payment-return can redirect window.opener.
+            return window.open(url, 'ladill_pay_checkout', 'width=480,height=720');
+        } catch (e) {
+            return null;
+        }
+    }
+
+    function ensureStore() {
+        if (!window.Alpine || typeof window.Alpine.store !== 'function') return null;
+        if (window.Alpine.store('ladillPayCheckout')) {
+            return window.Alpine.store('ladillPayCheckout');
+        }
+        window.Alpine.store('ladillPayCheckout', {
+            frameable: false,
+            popupBlocked: false,
+            launchKey: '',
+            reset() {
+                this.frameable = false;
+                this.popupBlocked = false;
+                this.launchKey = '';
+            },
+            sync(show, url) {
+                if (!show) {
+                    this.reset();
+                    return;
+                }
+                if (!url) return;
+                this.frameable = isFrameable(url);
+                if (this.frameable) {
+                    this.popupBlocked = false;
+                    return;
+                }
+                if (this.launchKey === url) return;
+                this.launchKey = url;
+                var popup = openCheckout(url);
+                this.popupBlocked = !(popup && !popup.closed);
+            },
+            continueTo(url) {
+                if (!url) return;
+                var popup = openCheckout(url);
+                this.popupBlocked = !(popup && !popup.closed);
+                if (this.popupBlocked) {
+                    window.location.assign(url);
+                }
+            },
+        });
+        return window.Alpine.store('ladillPayCheckout');
+    }
+
+    function onAlpineReady() {
+        ensureStore();
+    }
+
+    if (window.Alpine) {
+        onAlpineReady();
+    }
+    document.addEventListener('alpine:init', onAlpineReady);
+
+    window.LadillPayCheckout = {
+        isFrameable: isFrameable,
+        open: openCheckout,
+        ensureStore: ensureStore,
+    };
+})();
+</script>
+@endonce
 <template x-teleport="body">
 <div x-show="showSheet"
      x-cloak
-     x-effect="document.documentElement.style.overflow = showSheet ? 'hidden' : ''"
+     x-effect="
+        document.documentElement.style.overflow = showSheet ? 'hidden' : '';
+        if (typeof window.LadillPayCheckout !== 'undefined') {
+            window.LadillPayCheckout.ensureStore();
+        }
+        if ($store.ladillPayCheckout) {
+            $store.ladillPayCheckout.sync(showSheet, checkoutUrl);
+        }
+     "
      @keydown.escape.window="if (showSheet) showSheet = false"
      class="fixed inset-0 z-[9999] flex items-end justify-center md:items-center md:p-6"
      role="dialog"
@@ -90,10 +183,37 @@
             </div>
         </div>
         <div class="min-h-0 flex-1 overflow-y-auto overscroll-contain">
-            <iframe :src="showSheet ? checkoutUrl : ''"
+            <iframe x-show="$store.ladillPayCheckout?.frameable"
+                    :src="showSheet && $store.ladillPayCheckout?.frameable ? checkoutUrl : ''"
                     class="h-full min-h-[60dvh] w-full border-0"
                     allow="payment *"
                     title="{{ $iframeTitle }}"></iframe>
+            <div x-show="!$store.ladillPayCheckout?.frameable"
+                 class="flex min-h-[60dvh] flex-col items-center justify-center gap-4 px-6 py-10 text-center">
+                <div class="flex h-12 w-12 items-center justify-center rounded-full bg-indigo-50 text-indigo-600" aria-hidden="true">
+                    <svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke-width="1.75" stroke="currentColor">
+                        <path stroke-linecap="round" stroke-linejoin="round" d="M16.5 10.5V6.75a4.5 4.5 0 1 0-9 0v3.75m-.75 11.25h10.5a2.25 2.25 0 0 0 2.25-2.25v-6.75a2.25 2.25 0 0 0-2.25-2.25H6.75a2.25 2.25 0 0 0-2.25 2.25v6.75a2.25 2.25 0 0 0 2.25 2.25Z"/>
+                    </svg>
+                </div>
+                <div class="max-w-xs space-y-1">
+                    <p class="text-sm font-semibold text-slate-800"
+                       x-text="$store.ladillPayCheckout?.popupBlocked ? 'Continue in a secure payment window' : 'Complete payment in the secure window'"></p>
+                    <p class="text-xs leading-snug text-slate-500">
+                        <span x-show="!$store.ladillPayCheckout?.popupBlocked">A Paystack window should be open. If you do not see it, tap continue below.</span>
+                        <span x-show="$store.ladillPayCheckout?.popupBlocked">Your browser blocked the popup. Tap continue to open Paystack.</span>
+                    </p>
+                </div>
+                <button type="button"
+                        @click="$store.ladillPayCheckout?.continueTo(checkoutUrl)"
+                        class="inline-flex w-full max-w-xs items-center justify-center rounded-xl bg-indigo-600 px-4 py-3 text-sm font-semibold text-white hover:bg-indigo-700">
+                    Continue to Paystack
+                </button>
+                <button type="button"
+                        @click="showSheet = false"
+                        class="text-xs font-medium text-slate-500 hover:text-slate-700">
+                    Cancel
+                </button>
+            </div>
         </div>
         @if (! empty($sheetFooter))
             <p class="shrink-0 border-t border-slate-100 bg-slate-50 px-4 py-2 text-center text-[11px] text-slate-500">
@@ -131,11 +251,38 @@
             </button>
         </div>
         <div class="min-h-0 flex-1 overflow-y-auto overscroll-contain">
-            <iframe :src="showSheet ? checkoutUrl : ''"
+            <iframe x-show="$store.ladillPayCheckout?.frameable"
+                    :src="showSheet && $store.ladillPayCheckout?.frameable ? checkoutUrl : ''"
                     class="h-full min-h-0 w-full border-0"
                     style="min-height: 28rem"
                     allow="payment *"
                     title="{{ $iframeTitle }}"></iframe>
+            <div x-show="!$store.ladillPayCheckout?.frameable"
+                 class="flex h-full min-h-[28rem] flex-col items-center justify-center gap-4 px-8 py-12 text-center">
+                <div class="flex h-12 w-12 items-center justify-center rounded-full bg-indigo-50 text-indigo-600" aria-hidden="true">
+                    <svg class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke-width="1.75" stroke="currentColor">
+                        <path stroke-linecap="round" stroke-linejoin="round" d="M16.5 10.5V6.75a4.5 4.5 0 1 0-9 0v3.75m-.75 11.25h10.5a2.25 2.25 0 0 0 2.25-2.25v-6.75a2.25 2.25 0 0 0-2.25-2.25H6.75a2.25 2.25 0 0 0-2.25 2.25v6.75a2.25 2.25 0 0 0 2.25 2.25Z"/>
+                    </svg>
+                </div>
+                <div class="max-w-sm space-y-1">
+                    <p class="text-sm font-semibold text-slate-800"
+                       x-text="$store.ladillPayCheckout?.popupBlocked ? 'Continue in a secure payment window' : 'Complete payment in the secure window'"></p>
+                    <p class="text-xs leading-snug text-slate-500">
+                        <span x-show="!$store.ladillPayCheckout?.popupBlocked">A Paystack window should be open. If you do not see it, click continue below.</span>
+                        <span x-show="$store.ladillPayCheckout?.popupBlocked">Your browser blocked the popup. Click continue to open Paystack.</span>
+                    </p>
+                </div>
+                <button type="button"
+                        @click="$store.ladillPayCheckout?.continueTo(checkoutUrl)"
+                        class="inline-flex w-full max-w-xs items-center justify-center rounded-xl bg-indigo-600 px-4 py-3 text-sm font-semibold text-white hover:bg-indigo-700">
+                    Continue to Paystack
+                </button>
+                <button type="button"
+                        @click="showSheet = false"
+                        class="text-xs font-medium text-slate-500 hover:text-slate-700">
+                    Cancel
+                </button>
+            </div>
         </div>
         @if (! empty($sheetFooter))
             <p class="shrink-0 border-t border-slate-100 bg-slate-50 px-5 py-2 text-center text-[11px] text-slate-500">
diff --git a/resources/views/public/payment-return.blade.php b/resources/views/public/payment-return.blade.php
index 82ed789..44333ad 100644
--- a/resources/views/public/payment-return.blade.php
+++ b/resources/views/public/payment-return.blade.php
@@ -14,6 +14,13 @@
     <script>
         (function () {
             var url = @json($redirect);
+            try {
+                if (window.opener && !window.opener.closed) {
+                    window.opener.location.replace(url);
+                    window.close();
+                    return;
+                }
+            } catch (e) {}
             try {
                 if (window.top && window.top !== window.self) {
                     window.top.location.replace(url);
diff --git a/tests/Feature/ResponsivePaystackSheetTest.php b/tests/Feature/ResponsivePaystackSheetTest.php
new file mode 100644
index 0000000..814687e
--- /dev/null
+++ b/tests/Feature/ResponsivePaystackSheetTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Tests\Feature;
+
+use Tests\TestCase;
+
+class ResponsivePaystackSheetTest extends TestCase
+{
+    public function test_checkout_sheet_partial_has_mobile_sheet_and_desktop_modal(): void
+    {
+        $html = view('partials.paystack-sheet', [
+            'audience' => 'buyer',
+        ])->render();
+
+        $this->assertStringContainsString('role="dialog"', $html);
+        $this->assertStringContainsString('aria-modal="true"', $html);
+        $this->assertStringContainsString('md:items-center', $html);
+        $this->assertStringContainsString('rounded-t-2xl', $html);
+        $this->assertStringContainsString('md:h-[min(720px,85vh)]', $html);
+        $this->assertStringContainsString('Complete your payment', $html);
+        $this->assertStringContainsString('safe-area-inset-bottom', $html);
+        $this->assertStringContainsString('LadillPayCheckout', $html);
+        $this->assertStringContainsString('Continue to Paystack', $html);
+        $this->assertStringContainsString('ladill_pay_checkout', $html);
+        $this->assertStringNotContainsString('Paystack checkout', $html);
+    }
+
+    public function test_payment_return_escapes_popup_and_iframe_to_opener_or_top(): void
+    {
+        $html = view('public.payment-return', [
+            'redirect' => 'https://example.test/paid',
+        ])->render();
+
+        $this->assertStringContainsString('Confirming your payment', $html);
+        $this->assertStringContainsString('window.opener', $html);
+        $this->assertStringContainsString('window.top.location.replace', $html);
+        $this->assertTrue(
+            str_contains($html, 'https://example.test/paid')
+            || str_contains($html, 'https:\/\/example.test\/paid')
+        );
+    }
+}