diff --git a/composer.json b/composer.json
index 33081234..4aed0fcd 100644
--- a/composer.json
+++ b/composer.json
@@ -44,6 +44,8 @@
         "spatie/laravel-activitylog": "^4.12",
         "spatie/laravel-medialibrary": "^11.23",
         "spatie/laravel-permission": "^8.0",
+        "spatie/laravel-webhook-client": "^3.6",
+        "spatie/laravel-webhook-server": "^3.10",
         "spatie/pdf-to-text": "^1.54",
         "stancl/tenancy": "^3.10",
         "yajra/laravel-datatables": "^13.0"
diff --git a/resources/css/app.css b/resources/css/app.css
index e086f703..53bff57f 100644
--- a/resources/css/app.css
+++ b/resources/css/app.css
@@ -1213,3 +1213,166 @@ html[data-wms-sidebar="collapsed"] .wms-sidebar-link.is-active::after {
         pointer-events: auto;
     }
 }
+
+/*
+|--------------------------------------------------------------------------
+| WMS fixed sidebar / scrollable content correction
+|--------------------------------------------------------------------------
+|
+| The application shell must own the viewport. The browser document must not
+| scroll; only the right-hand WMS content pane should scroll. Keep this block
+| at the end of the stylesheet so it wins over earlier shell declarations.
+|
+*/
+
+html,
+body {
+    width: 100%;
+    height: 100%;
+    min-height: 100%;
+    overflow: hidden !important;
+    overscroll-behavior: none;
+}
+
+body {
+    position: fixed;
+    inset: 0;
+}
+
+.wms-app-shell {
+    position: fixed !important;
+    inset: 0 !important;
+    display: grid !important;
+    grid-template-columns: var(--wms-sidebar-width) minmax(0, 1fr) !important;
+    width: 100vw !important;
+    height: 100vh !important;
+    min-width: 0 !important;
+    min-height: 0 !important;
+    max-height: 100vh !important;
+    overflow: hidden !important;
+}
+
+@supports (height: 100dvh) {
+    .wms-app-shell {
+        height: 100dvh !important;
+        max-height: 100dvh !important;
+    }
+}
+
+html[data-wms-sidebar="expanded"] .wms-app-shell {
+    grid-template-columns: var(--wms-sidebar-width) minmax(0, 1fr) !important;
+}
+
+html[data-wms-sidebar="collapsed"] .wms-app-shell {
+    grid-template-columns: var(--wms-sidebar-collapsed-width) minmax(0, 1fr) !important;
+}
+
+.wms-sidebar {
+    position: relative !important;
+    display: flex !important;
+    flex-direction: column !important;
+    width: var(--wms-sidebar-width) !important;
+    min-width: var(--wms-sidebar-width) !important;
+    max-width: var(--wms-sidebar-width) !important;
+    height: 100% !important;
+    min-height: 0 !important;
+    max-height: 100% !important;
+    overflow: hidden !important;
+}
+
+html[data-wms-sidebar="collapsed"] .wms-sidebar {
+    width: var(--wms-sidebar-collapsed-width) !important;
+    min-width: var(--wms-sidebar-collapsed-width) !important;
+    max-width: var(--wms-sidebar-collapsed-width) !important;
+}
+
+.wms-sidebar-header {
+    flex: 0 0 auto !important;
+}
+
+.wms-sidebar-nav {
+    flex: 1 1 auto !important;
+    min-height: 0 !important;
+    overflow-y: auto !important;
+    overflow-x: hidden !important;
+    overscroll-behavior: contain;
+    -webkit-overflow-scrolling: touch;
+}
+
+.wms-main-panel {
+    display: flex !important;
+    flex-direction: column !important;
+    min-width: 0 !important;
+    min-height: 0 !important;
+    width: 100% !important;
+    height: 100% !important;
+    max-height: 100% !important;
+    overflow: hidden !important;
+}
+
+.wms-main-panel > header,
+.wms-main-panel > .wms-topbar,
+.wms-main-panel > [data-wms-topbar] {
+    position: relative !important;
+    top: auto !important;
+    flex: 0 0 auto !important;
+    min-height: 0 !important;
+}
+
+.wms-content {
+    display: block !important;
+    flex: 1 1 auto !important;
+    min-width: 0 !important;
+    min-height: 0 !important;
+    width: 100% !important;
+    height: auto !important;
+    max-height: none !important;
+    overflow-y: auto !important;
+    overflow-x: hidden !important;
+    overscroll-behavior: contain;
+    -webkit-overflow-scrolling: touch;
+}
+
+@media (max-width: 1023px) {
+    .wms-app-shell {
+        display: block !important;
+        height: 100vh !important;
+        max-height: 100vh !important;
+        overflow: hidden !important;
+    }
+
+    @supports (height: 100dvh) {
+        .wms-app-shell {
+            height: 100dvh !important;
+            max-height: 100dvh !important;
+        }
+    }
+
+    .wms-main-panel {
+        height: 100% !important;
+        max-height: 100% !important;
+        overflow: hidden !important;
+    }
+
+    .wms-sidebar,
+    html[data-wms-sidebar="collapsed"] .wms-sidebar {
+        position: fixed !important;
+        inset: 0 auto 0 0 !important;
+        z-index: 70 !important;
+        width: min(88vw, 22rem) !important;
+        min-width: min(88vw, 22rem) !important;
+        max-width: min(88vw, 22rem) !important;
+        height: 100vh !important;
+        max-height: 100vh !important;
+        overflow: hidden !important;
+    }
+
+    @supports (height: 100dvh) {
+        .wms-sidebar,
+        html[data-wms-sidebar="collapsed"] .wms-sidebar {
+            height: 100dvh !important;
+            max-height: 100dvh !important;
+        }
+    }
+}
+
diff --git a/resources/views/components/layouts/app.blade.php b/resources/views/components/layouts/app.blade.php
index 8c3a4d55..7729aefe 100644
--- a/resources/views/components/layouts/app.blade.php
+++ b/resources/views/components/layouts/app.blade.php
@@ -24,7 +24,7 @@
     })();
 </script>
 
-<body class="min-h-screen bg-white font-sans text-zinc-950 antialiased dark:bg-zinc-950 dark:text-zinc-100">
+<body class="h-screen min-h-screen overflow-hidden bg-white font-sans text-zinc-950 antialiased dark:bg-zinc-950 dark:text-zinc-100">
 <style>
     :root {
         --wms-sidebar-width: 288px;
@@ -37,13 +37,38 @@
         --wms-active-child-gold-dark: #e7b72f;
     }
 
+    html,
+    body {
+        width: 100%;
+        height: 100%;
+        min-height: 100%;
+        overflow: hidden !important;
+        overscroll-behavior: none;
+    }
+
+    body {
+        position: fixed;
+        inset: 0;
+    }
+
     .wms-app-shell {
+        position: fixed;
+        inset: 0;
         display: grid;
         grid-template-columns: var(--wms-sidebar-width) minmax(0, 1fr);
-        min-height: 100vh;
+        width: 100vw;
+        height: 100vh;
+        min-height: 0;
+        overflow: hidden !important;
         transition-property: none;
     }
 
+    @supports (height: 100dvh) {
+        .wms-app-shell {
+            height: 100dvh;
+        }
+    }
+
     html[data-wms-sidebar="expanded"] .wms-app-shell {
         grid-template-columns: var(--wms-sidebar-width) minmax(0, 1fr);
     }
@@ -54,16 +79,49 @@
 
     .wms-sidebar {
         position: relative;
+        display: flex;
+        flex-direction: column;
         width: var(--wms-sidebar-width);
         min-width: var(--wms-sidebar-width);
         max-width: var(--wms-sidebar-width);
+        height: 100%;
+        min-height: 0;
+        max-height: 100%;
+        overflow: hidden !important;
         transition-property: none;
     }
 
     .wms-main-panel {
+        display: flex !important;
+        flex-direction: column !important;
+        min-width: 0;
+        min-height: 0;
+        height: 100%;
+        max-height: 100%;
+        overflow: hidden !important;
         transition-property: none;
     }
 
+    .wms-main-panel > header,
+    .wms-main-panel > .wms-topbar,
+    .wms-main-panel > [data-wms-topbar] {
+        flex: 0 0 auto !important;
+        min-height: 0;
+    }
+
+    .wms-content {
+        display: block;
+        flex: 1 1 auto !important;
+        min-width: 0;
+        min-height: 0 !important;
+        height: auto;
+        max-height: none;
+        overflow-y: auto !important;
+        overflow-x: hidden !important;
+        overscroll-behavior: contain;
+        -webkit-overflow-scrolling: touch;
+    }
+
     html[data-wms-sidebar="collapsed"] .wms-sidebar {
         width: var(--wms-sidebar-collapsed-width);
         min-width: var(--wms-sidebar-collapsed-width);
@@ -108,7 +166,12 @@
     }
 
     .wms-sidebar-nav {
-        overflow-x: hidden;
+        flex: 1 1 auto;
+        min-height: 0;
+        overflow-y: auto !important;
+        overflow-x: hidden !important;
+        overscroll-behavior: contain;
+        -webkit-overflow-scrolling: touch;
     }
 
     .wms-sidebar-heading-button {
@@ -166,7 +229,6 @@
         color: #ffffff;
     }
 
-
     .wms-sidebar-primary-link {
         margin-bottom: 0.35rem;
         min-height: 3.25rem;
@@ -179,6 +241,7 @@
     .wms-sidebar-primary-link span {
         letter-spacing: 0.16em;
     }
+
     .wms-sidebar-link.is-active {
         position: relative;
         isolation: isolate;
@@ -240,6 +303,20 @@
     @media (max-width: 1023px) {
         .wms-app-shell {
             display: block;
+            height: 100vh;
+            overflow: hidden !important;
+        }
+
+        @supports (height: 100dvh) {
+            .wms-app-shell {
+                height: 100dvh;
+            }
+        }
+
+        .wms-main-panel {
+            width: 100vw;
+            height: 100%;
+            overflow: hidden !important;
         }
 
         .wms-sidebar,
@@ -247,6 +324,8 @@
             width: min(88vw, 22rem);
             min-width: min(88vw, 22rem);
             max-width: min(88vw, 22rem);
+            height: 100%;
+            overflow: hidden !important;
         }
 
         .wms-sidebar-resizer {
@@ -284,7 +363,7 @@
 <div class="wms-app-shell" data-wms-shell data-wms-mobile-shell>
     <button type="button" class="wms-mobile-overlay" data-wms-mobile-close aria-label="{{ __('Close navigation menu') }}"></button>
 
-    <aside id="wms-main-sidebar" class="wms-sidebar" data-wms-sidebar aria-label="{{ __('Main navigation') }}">
+    <aside id="wms-main-sidebar" class="wms-sidebar" data-wms-sidebar data-test="desktop-sidebar" aria-label="{{ __('Main navigation') }}">
         <div class="wms-sidebar-header">
             <a href="{{ auth()->user()?->isMpbaPlatformAdmin() && Route::has('platform.dashboard') ? route('platform.dashboard') : route('dashboard') }}" wire:navigate class="wms-brand" aria-label="{{ __('Warehouse Management System') }}">
                 <span class="wms-brand-mark" data-wms-brand-toggle title="{{ __('Expand sidebar') }}">
@@ -325,6 +404,7 @@
                     </a>
                 </div>
             @endif
+
             <div class="wms-sidebar-group" data-wms-menu-group="operations">
                 <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
                     <span class="wms-sidebar-heading-content">
@@ -589,6 +669,7 @@
                 </div>
             @endif
         </nav>
+
         <button
             type="button"
             class="wms-sidebar-resizer"
@@ -598,10 +679,10 @@
         ></button>
     </aside>
 
-    <div class="wms-main-panel">
+    <div class="wms-main-panel" data-test="main-panel">
         @include("layouts.partials.topbar")
 
-        <main class="wms-content">
+        <main class="wms-content" data-test="main-content" tabindex="-1">
             {{ $slot }}
         </main>
     </div>
diff --git a/resources/views/components/layouts/sidebar.blade.php b/resources/views/components/layouts/sidebar.blade.php
new file mode 100644
index 00000000..98f2d30b
--- /dev/null
+++ b/resources/views/components/layouts/sidebar.blade.php
@@ -0,0 +1,835 @@
+<!DOCTYPE html>
+<html lang="{{ str_replace('_', '-', app()->getLocale()) }}" class="dark">
+@include('partials.head')
+
+<script>
+    (function () {
+        const SIDEBAR_STATE_KEY = 'wms-sidebar-state';
+        const SIDEBAR_WIDTH_KEY = 'wms-sidebar-width';
+
+        const DEFAULT_WIDTH = 288;
+        const MIN_WIDTH = 224;
+        const MAX_WIDTH = 448;
+
+        function clamp(value, min, max) {
+            return Math.min(Math.max(value, min), max);
+        }
+
+        const savedWidth = Number.parseInt(localStorage.getItem(SIDEBAR_WIDTH_KEY) || DEFAULT_WIDTH, 10);
+        const width = clamp(Number.isFinite(savedWidth) ? savedWidth : DEFAULT_WIDTH, MIN_WIDTH, MAX_WIDTH);
+        const savedState = localStorage.getItem(SIDEBAR_STATE_KEY) || 'expanded';
+
+        document.documentElement.style.setProperty('--wms-sidebar-width', `${width}px`);
+        document.documentElement.dataset.wmsSidebar = savedState === 'collapsed' ? 'collapsed' : 'expanded';
+    })();
+</script>
+
+<body class="h-screen min-h-screen overflow-hidden bg-white font-sans text-zinc-950 antialiased dark:bg-zinc-950 dark:text-zinc-100">
+
+@vite(['resources/css/app.css'])
+
+<div class="wms-app-shell" data-wms-shell data-wms-mobile-shell>
+    <button type="button" class="wms-mobile-overlay" data-wms-mobile-close aria-label="{{ __('Close navigation menu') }}"></button>
+
+    <aside id="wms-main-sidebar" class="wms-sidebar" data-wms-sidebar data-test="desktop-sidebar" aria-label="{{ __('Main navigation') }}">
+        <div class="wms-sidebar-header">
+            <a href="{{ auth()->user()?->isMpbaPlatformAdmin() && Route::has('platform.dashboard') ? route('platform.dashboard') : route('dashboard') }}" wire:navigate class="wms-brand" aria-label="{{ __('Warehouse Management System') }}">
+                <span class="wms-brand-mark" data-wms-brand-toggle title="{{ __('Expand sidebar') }}">
+                    <span class="wms-brand-mark-inner">W</span>
+                </span>
+
+                <span class="wms-brand-copy" data-wms-sidebar-label>
+                    <span class="wms-brand-title">{{ __('Warehouse Management System') }}</span>
+                    <span class="wms-brand-subtitle">MPBA</span>
+                </span>
+            </a>
+
+            <button type="button" class="wms-sidebar-toggle" data-wms-sidebar-toggle aria-label="{{ __('Collapse sidebar') }}" aria-expanded="true">
+                <span class="wms-toggle-expanded">‹</span>
+            </button>
+
+            <button type="button" class="wms-mobile-close" data-wms-mobile-close aria-label="{{ __('Close navigation') }}">×</button>
+        </div>
+
+        <nav class="wms-sidebar-nav" aria-label="{{ __('Main navigation') }}">
+            @php
+                $platformRoute = auth()->user()?->isMpbaPlatformAdmin() && Route::has('platform.dashboard')
+                    ? 'platform.dashboard'
+                    : (Route::has('dashboard') ? 'dashboard' : null);
+            @endphp
+
+            @if($platformRoute)
+                <div
+                    class="wms-sidebar-group"
+                    data-wms-menu-group="platform"
+                    @if(request()->routeIs('platform.dashboard') || request()->routeIs('dashboard')) data-wms-selected="true" data-wms-has-active="true" @endif
+                >
+                    <a
+                        href="{{ route($platformRoute) }}"
+                        wire:navigate
+                        class="wms-sidebar-heading wms-sidebar-heading-button wms-sidebar-primary-link"
+                        title="{{ __('Platform') }}"
+                        data-wms-sidebar-label
+                    >
+                        <i class="fa-solid fa-screwdriver-wrench wms-sidebar-icon" aria-hidden="true"></i>
+                        <span>{{ __('Platform') }}</span>
+                    </a>
+                </div>
+            @endif
+            <div class="wms-sidebar-group" data-wms-menu-group="operations">
+                <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
+                    <span class="wms-sidebar-heading-content">
+                        <i class="fa-solid fa-chart-simple wms-sidebar-icon" aria-hidden="true"></i>
+                        <span>{{ __('Operations') }}</span>
+                    </span>
+                </button>
+
+                <div class="wms-sidebar-group-items" data-wms-menu-items>
+                    @if(Route::has('analytics.index'))
+                        <a href="{{ route('analytics.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('analytics.*')) is-active @endif" title="{{ __('Analytics') }}">
+                            <i class="fa-solid fa-chart-line wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Analytics') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('inventory-management.index'))
+                        <a href="{{ route('inventory-management.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('inventory-management.*')) is-active @endif" title="{{ __('Inventory') }}">
+                            <i class="fa-solid fa-boxes-stacked wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Inventory') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('replenishment.index'))
+                        <a href="{{ route('replenishment.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('replenishment.*')) is-active @endif" title="{{ __('Replenishment') }}">
+                            <i class="fa-solid fa-arrows-rotate wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Replenishment') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('shipping.index'))
+                        <a href="{{ route('shipping.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('shipping.*')) is-active @endif" title="{{ __('Shipping') }}">
+                            <i class="fa-solid fa-truck-fast wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Shipping') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('transportation.index'))
+                        <a href="{{ route('transportation.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('transportation.*')) is-active @endif" title="{{ __('Transportation') }}">
+                            <i class="fa-solid fa-truck-ramp-box wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Transportation') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('carrier-management.index'))
+                        <a href="{{ route('carrier-management.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('carrier-management.*')) is-active @endif" title="{{ __('Carriers') }}">
+                            <i class="fa-solid fa-route wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Carriers') }}</span>
+                        </a>
+                    @endif
+                </div>
+            </div>
+
+            @php
+                $helpdeskEnabled = Route::has('helpdesk.index') || Route::has('helpdesk.tickets.index');
+
+                $helpdeskSettingsRoute = Route::has('helpdesk.settings')
+                    ? 'helpdesk.settings'
+                    : (Route::has('helpdesk.settings.index') ? 'helpdesk.settings.index' : null);
+
+                $helpdeskGitRoute = Route::has('helpdesk.git.index')
+                    ? 'helpdesk.git.index'
+                    : null;
+
+                $helpdeskWorkflowRoute = Route::has('helpdesk.workflow-templates.index')
+                    ? 'helpdesk.workflow-templates.index'
+                    : null;
+
+                $documentationEnabled = Route::has('documentation.index') || Route::has('documentation.documents.index');
+
+                $documentationRoute = Route::has('documentation.index')
+                    ? 'documentation.index'
+                    : (Route::has('documentation.documents.index') ? 'documentation.documents.index' : null);
+            @endphp
+
+            @if($helpdeskEnabled || $documentationEnabled)
+                <div class="wms-sidebar-group" data-wms-menu-group="support">
+                    @if(Route::has('helpdesk.index'))
+                        <a href="{{ route('helpdesk.index') }}" wire:navigate class="wms-sidebar-heading wms-sidebar-heading-button @if(request()->routeIs('helpdesk.*')) is-active @endif" data-wms-sidebar-label title="{{ __('Support') }}">
+                            <span class="wms-sidebar-heading-content">
+                                <i class="fa-solid fa-headset wms-sidebar-icon" aria-hidden="true"></i>
+                                <span>{{ __('Support') }}</span>
+                            </span>
+                        </a>
+                    @else
+                        <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
+                            <span class="wms-sidebar-heading-content">
+                                <i class="fa-solid fa-headset wms-sidebar-icon" aria-hidden="true"></i>
+                                <span>{{ __('Support') }}</span>
+                            </span>
+                        </button>
+                    @endif
+
+                    <div class="wms-sidebar-group-items mt-2 space-y-1" data-wms-menu-items>
+                        @if($helpdeskGitRoute)
+                            <a href="{{ route($helpdeskGitRoute) }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('helpdesk.git.*')) is-active @endif" title="{{ __('Git Tracking') }}">
+                                <i class="fa-solid fa-code-commit wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Git Tracking') }}</span>
+                            </a>
+                        @endif
+
+                        @if($helpdeskWorkflowRoute)
+                            <a href="{{ route($helpdeskWorkflowRoute) }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('helpdesk.workflow-templates.*')) is-active @endif" title="{{ __('Workflow Emails') }}">
+                                <i class="fa-solid fa-envelope-circle-check wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Workflow Emails') }}</span>
+                            </a>
+                        @endif
+
+                        @if($documentationRoute)
+                            <a href="{{ route($documentationRoute) }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('documentation.*')) is-active @endif" title="{{ __('Documentation') }}">
+                                <i class="fa-solid fa-book-open wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Documentation') }}</span>
+                            </a>
+                        @endif
+
+                        @if($helpdeskSettingsRoute)
+                            <a href="{{ route($helpdeskSettingsRoute) }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('helpdesk.settings') || request()->routeIs('helpdesk.settings.index')) is-active @endif" title="{{ __('Helpdesk Settings') }}">
+                                <i class="fa-solid fa-gears wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Settings') }}</span>
+                            </a>
+                        @endif
+                    </div>
+                </div>
+            @endif
+
+            <div class="wms-sidebar-group" data-wms-menu-group="integration-reporting">
+                <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
+                    <span class="wms-sidebar-heading-content">
+                        <i class="fa-solid fa-plug-circle-bolt wms-sidebar-icon" aria-hidden="true"></i>
+                        <span>{{ __('Integration & Reporting') }}</span>
+                    </span>
+                </button>
+
+                <div class="wms-sidebar-group-items" data-wms-menu-items>
+                    @if(Route::has('m3-integration.index'))
+                        <a href="{{ route('m3-integration.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('m3-integration.*')) is-active @endif" title="{{ __('M3 Integration') }}">
+                            <i class="fa-solid fa-plug-circle-bolt wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('M3 Integration') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('sentinel-integration.index'))
+                        <a href="{{ route('sentinel-integration.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('sentinel-integration.*')) is-active @endif" title="{{ __('Sentinel') }}">
+                            <i class="fa-solid fa-satellite-dish wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Sentinel') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('document-archive.index'))
+                        <a href="{{ route('document-archive.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('document-archive.*')) is-active @endif" title="{{ __('Documents') }}">
+                            <i class="fa-solid fa-box-archive wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Documents') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('reporting.index'))
+                        <a href="{{ route('reporting.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('reporting.*')) is-active @endif" title="{{ __('Reporting') }}">
+                            <i class="fa-solid fa-file-lines wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Reporting') }}</span>
+                        </a>
+                    @endif
+                </div>
+            </div>
+
+            <div class="wms-sidebar-group" data-wms-menu-group="administration">
+                <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
+                    <span class="wms-sidebar-heading-content">
+                        <i class="fa-solid fa-sliders wms-sidebar-icon" aria-hidden="true"></i>
+                        <span>{{ __('Administration') }}</span>
+                    </span>
+                </button>
+
+                <div class="wms-sidebar-group-items" data-wms-menu-items>
+                    @if(Route::has('warehouses.index'))
+                        <a href="{{ route('warehouses.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('warehouses.*')) is-active @endif" title="{{ __('Warehouses') }}">
+                            <i class="fa-solid fa-warehouse wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Warehouses') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('warehouse-rules.index'))
+                        <a href="{{ route('warehouse-rules.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('warehouse-rules.*')) is-active @endif" title="{{ __('Validation Rules') }}">
+                            <i class="fa-solid fa-shield-halved wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Validation Rules') }}</span>
+                        </a>
+                    @endif
+
+                    @if(auth()->user()?->isMpbaPlatformAdmin() && Route::has('platform.prices.index'))
+                        <a href="{{ route('platform.prices.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('platform.prices.*')) is-active @endif" title="{{ __('Prices') }}">
+                            <i class="fa-solid fa-tags wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Prices') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('configuration.index'))
+                        <a href="{{ route('configuration.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('configuration.*')) is-active @endif" title="{{ __('Configuration') }}">
+                            <i class="fa-solid fa-sliders wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Configuration') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('security.index'))
+                        <a href="{{ route('security.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('security.*')) is-active @endif" title="{{ __('Security') }}">
+                            <i class="fa-solid fa-user-shield wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Security') }}</span>
+                        </a>
+                    @endif
+
+                    @if(Route::has('audit.index'))
+                        <a href="{{ route('audit.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('audit.*')) is-active @endif" title="{{ __('Audit') }}">
+                            <i class="fa-solid fa-clipboard-check wms-sidebar-icon" aria-hidden="true"></i>
+                            <span data-wms-sidebar-label>{{ __('Audit') }}</span>
+                        </a>
+                    @endif
+                </div>
+            </div>
+
+            @if(auth()->user()?->isMpbaPlatformAdmin())
+                <div class="wms-sidebar-group" data-wms-menu-group="platform-administration">
+                    <button type="button" class="wms-sidebar-heading wms-sidebar-heading-button" data-wms-menu-toggle data-wms-sidebar-label aria-expanded="false">
+                        <span class="wms-sidebar-heading-content">
+                            <i class="fa-solid fa-building-shield wms-sidebar-icon" aria-hidden="true"></i>
+                            <span>{{ __('Platform Administration') }}</span>
+                        </span>
+                    </button>
+
+                    <div class="wms-sidebar-group-items" data-wms-menu-items>
+                        @if(Route::has('platform.companies.index'))
+                            <a href="{{ route('platform.companies.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('platform.companies.*')) is-active @endif" title="{{ __('Companies') }}">
+                                <i class="fa-solid fa-building wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Companies') }}</span>
+                            </a>
+                        @endif
+
+                        @if(Route::has('platform.licenses.index'))
+                            <a href="{{ route('platform.licenses.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('platform.licenses.*')) is-active @endif" title="{{ __('Licences') }}">
+                                <i class="fa-solid fa-key wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Licences') }}</span>
+                            </a>
+                        @endif
+
+                        @if(Route::has('platform.payments.index'))
+                            <a href="{{ route('platform.payments.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('platform.payments.*')) is-active @endif" title="{{ __('Payments') }}">
+                                <i class="fa-solid fa-credit-card wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Payments') }}</span>
+                            </a>
+                        @endif
+
+                        @if(Route::has('countries.index'))
+                            <a href="{{ route('countries.index') }}" wire:navigate class="wms-sidebar-link @if(request()->routeIs('countries.*')) is-active @endif" title="{{ __('Countries') }}">
+                                <i class="fa-solid fa-globe wms-sidebar-icon" aria-hidden="true"></i>
+                                <span data-wms-sidebar-label>{{ __('Countries') }}</span>
+                            </a>
+                        @endif
+                    </div>
+                </div>
+            @endif
+        </nav>
+        <button
+            type="button"
+            class="wms-sidebar-resizer"
+            data-wms-sidebar-resizer
+            aria-label="{{ __('Resize sidebar') }}"
+            title="{{ __('Drag to resize sidebar') }}"
+        ></button>
+    </aside>
+
+    <div class="wms-main-panel" data-test="main-panel">
+        @include("layouts.partials.topbar")
+
+        <main class="wms-content" data-test="main-content" tabindex="-1">
+            {{ $slot }}
+        </main>
+    </div>
+</div>
+
+<div
+    id="wms-toast-stack"
+    class="fixed right-4 top-4 z-[9999] flex w-[min(24rem,calc(100vw-2rem))] flex-col gap-3 font-sans"
+    aria-live="polite"
+    aria-atomic="true"
+></div>
+
+<script>
+    window.wmsToast = function (options) {
+        const stack = document.getElementById('wms-toast-stack');
+
+        if (!stack) {
+            return;
+        }
+
+        const config = {
+            type: options.type || 'info',
+            title: options.title || '',
+            message: options.message || '',
+            timeout: Number(options.timeout || 4500),
+        };
+
+        const palette = {
+            success: 'border-emerald-400/40 bg-emerald-950/95 text-emerald-50',
+            error: 'border-red-400/40 bg-red-950/95 text-red-50',
+            warning: 'border-amber-400/40 bg-amber-950/95 text-amber-50',
+            info: 'border-blue-400/40 bg-blue-950/95 text-blue-50',
+        };
+
+        const icon = {
+            success: 'fa-circle-check',
+            error: 'fa-circle-xmark',
+            warning: 'fa-triangle-exclamation',
+            info: 'fa-circle-info',
+        };
+
+        const toast = document.createElement('div');
+
+        toast.className = [
+            'wms-toast pointer-events-auto select-none rounded-2xl border px-4 py-3 font-sans shadow-2xl backdrop-blur',
+            'transition duration-200 ease-out translate-y-0 opacity-100',
+            palette[config.type] || palette.info,
+        ].join(' ');
+
+        toast.innerHTML = `
+            <div class="flex items-start gap-3">
+                <i class="fa-solid ${icon[config.type] || icon.info} mt-0.5 text-lg" aria-hidden="true"></i>
+
+                <div class="min-w-0 flex-1">
+                    ${config.title ? `<div class="text-sm font-bold">${config.title}</div>` : ''}
+                    <div class="text-sm leading-5">${config.message}</div>
+                </div>
+
+                <button type="button" class="ml-2 text-white/70 hover:text-white" aria-label="Close notification">
+                    <i class="fa-solid fa-xmark" aria-hidden="true"></i>
+                </button>
+            </div>
+        `;
+
+        const close = function () {
+            toast.classList.add('translate-y-[-0.35rem]', 'opacity-0');
+
+            window.setTimeout(function () {
+                toast.remove();
+            }, 200);
+        };
+
+        toast.querySelector('button').addEventListener('click', close);
+
+        stack.appendChild(toast);
+
+        if (config.timeout > 0) {
+            window.setTimeout(close, config.timeout);
+        }
+    };
+
+    window.addEventListener('wms:toast', function (event) {
+        window.wmsToast(event.detail || {});
+    });
+
+    function showSessionToasts() {
+        @if(session('success'))
+        window.wmsToast({
+            type: 'success',
+            title: @json(__('Success')),
+            message: @json(session('success')),
+        });
+        @endif
+
+        @if(session('error'))
+        window.wmsToast({
+            type: 'error',
+            title: @json(__('Error')),
+            message: @json(session('error')),
+        });
+        @endif
+
+        @if(session('warning'))
+        window.wmsToast({
+            type: 'warning',
+            title: @json(__('Warning')),
+            message: @json(session('warning')),
+        });
+        @endif
+
+        @if(session('info'))
+        window.wmsToast({
+            type: 'info',
+            title: @json(__('Information')),
+            message: @json(session('info')),
+        });
+        @endif
+    }
+
+    let wmsSessionToastsShown = false;
+
+    function showSessionToastsOnce() {
+        if (wmsSessionToastsShown) {
+            return;
+        }
+
+        wmsSessionToastsShown = true;
+        showSessionToasts();
+    }
+
+    document.addEventListener('DOMContentLoaded', showSessionToastsOnce);
+    document.addEventListener('livewire:navigated', showSessionToastsOnce);
+</script>
+
+@fluxScripts
+
+<script>
+    (function () {
+        const SIDEBAR_STATE_KEY = 'wms-sidebar-state';
+        const SIDEBAR_WIDTH_KEY = 'wms-sidebar-width';
+        const PLATFORM_FIRST_OPEN_KEY = 'wms-platform-first-opened';
+
+        const DEFAULT_WIDTH = 288;
+        const MIN_WIDTH = 224;
+        const MAX_WIDTH = 448;
+
+        function clamp(value, min, max) {
+            return Math.min(Math.max(value, min), max);
+        }
+
+        function getSavedSidebarWidth() {
+            const savedWidth = Number.parseInt(localStorage.getItem(SIDEBAR_WIDTH_KEY) || DEFAULT_WIDTH, 10);
+
+            return clamp(Number.isFinite(savedWidth) ? savedWidth : DEFAULT_WIDTH, MIN_WIDTH, MAX_WIDTH);
+        }
+
+        function applySidebarWidth() {
+            const nextWidth = `${getSavedSidebarWidth()}px`;
+
+            document.documentElement.style.setProperty('--wms-sidebar-width', nextWidth);
+        }
+
+        function applySidebarState() {
+            const root = document.documentElement;
+            const saved = localStorage.getItem(SIDEBAR_STATE_KEY) || 'expanded';
+
+            root.dataset.wmsSidebar = saved === 'collapsed' ? 'collapsed' : 'expanded';
+
+            document.querySelectorAll('[data-wms-sidebar-toggle]').forEach((button) => {
+                const expanded = root.dataset.wmsSidebar !== 'collapsed';
+
+                button.setAttribute('aria-expanded', expanded ? 'true' : 'false');
+                button.setAttribute('aria-label', expanded ? '{{ __('Collapse sidebar') }}' : '{{ __('Expand sidebar') }}');
+            });
+        }
+
+        function getMenuItems(group) {
+            return Array.from(group.children).find((child) => child.matches('[data-wms-menu-items]')) || null;
+        }
+
+        function getMenuToggle(group) {
+            return Array.from(group.children).find((child) => child.matches('[data-wms-menu-toggle]')) || null;
+        }
+
+        function groupHasActiveLink(group) {
+            const items = getMenuItems(group);
+            const activeHeading = Array.from(group.children).some((child) => {
+                return child.matches('.wms-sidebar-heading-button.is-active');
+            });
+
+            const routeSelectedGroup = group.dataset.wmsSelected === 'true' && group.dataset.wmsHasActive === 'true';
+
+            return routeSelectedGroup || activeHeading || (items ? items.querySelector('.wms-sidebar-link.is-active') !== null : false);
+        }
+
+        function setMenuGroupOpen(group, isOpen) {
+            group.dataset.wmsMenuOpen = isOpen ? 'true' : 'false';
+
+            const toggle = getMenuToggle(group);
+
+            if (toggle) {
+                toggle.setAttribute('aria-expanded', isOpen ? 'true' : 'false');
+            }
+        }
+
+        function setMenuGroupSelected(group, isSelected) {
+            group.dataset.wmsSelected = isSelected ? 'true' : 'false';
+            group.dataset.wmsHasActive = isSelected ? 'true' : 'false';
+        }
+
+        function resetAllMenuGroups() {
+            document.querySelectorAll('[data-wms-menu-group]').forEach((group) => {
+                setMenuGroupOpen(group, false);
+                setMenuGroupSelected(group, false);
+                group.dataset.wmsManualActive = 'false';
+            });
+        }
+
+        function selectMenuGroup(group, openGroup = true) {
+            resetAllMenuGroups();
+            setMenuGroupSelected(group, true);
+            setMenuGroupOpen(group, openGroup);
+        }
+
+        function applyMenuState() {
+            const groups = Array.from(document.querySelectorAll('[data-wms-menu-group]'));
+            const selectedByRoute = groups.find((group) => groupHasActiveLink(group)) || null;
+            const selectedByManualClick = groups.find((group) => group.dataset.wmsManualActive === 'true') || null;
+            const selectedGroup = selectedByRoute || selectedByManualClick;
+            const shouldOpenPlatformForFirstVisit = !selectedGroup && localStorage.getItem(PLATFORM_FIRST_OPEN_KEY) !== '1';
+
+            resetAllMenuGroups();
+
+            if (selectedGroup) {
+                setMenuGroupSelected(selectedGroup, true);
+                setMenuGroupOpen(selectedGroup, true);
+            } else if (shouldOpenPlatformForFirstVisit) {
+                const platformGroup = groups.find((group) => group.dataset.wmsMenuGroup === 'platform');
+
+                if (platformGroup) {
+                    setMenuGroupOpen(platformGroup, true);
+                }
+
+                localStorage.setItem(PLATFORM_FIRST_OPEN_KEY, '1');
+            }
+        }
+
+        function bindMenuControls() {
+            document.querySelectorAll('[data-wms-menu-toggle]').forEach((button) => {
+                if (button.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                button.dataset.wmsBound = '1';
+
+                button.addEventListener('click', function () {
+                    const group = button.closest('[data-wms-menu-group]');
+
+                    if (!group) {
+                        return;
+                    }
+
+                    const nextOpen = group.dataset.wmsMenuOpen !== 'true';
+
+                    resetAllMenuGroups();
+
+                    if (nextOpen) {
+                        group.dataset.wmsManualActive = 'true';
+                        setMenuGroupSelected(group, true);
+                        setMenuGroupOpen(group, true);
+                    }
+                });
+            });
+        }
+
+        function bindSidebarResize() {
+            document.querySelectorAll('[data-wms-sidebar-resizer]').forEach((handle) => {
+                if (handle.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                handle.dataset.wmsBound = '1';
+
+                let startX = 0;
+                let startWidth = DEFAULT_WIDTH;
+                let isResizing = false;
+
+                function getClientX(event) {
+                    if (event.touches && event.touches.length > 0) {
+                        return event.touches[0].clientX;
+                    }
+
+                    return event.clientX;
+                }
+
+                function startResize(event) {
+                    if (document.documentElement.dataset.wmsSidebar === 'collapsed') {
+                        return;
+                    }
+
+                    isResizing = true;
+                    startX = getClientX(event);
+
+                    const currentWidth = Number.parseInt(
+                        getComputedStyle(document.documentElement).getPropertyValue('--wms-sidebar-width'),
+                        10
+                    );
+
+                    startWidth = Number.isFinite(currentWidth) ? currentWidth : DEFAULT_WIDTH;
+
+                    document.body.classList.add('wms-sidebar-is-resizing');
+
+                    event.preventDefault();
+                }
+
+                function moveResize(event) {
+                    if (!isResizing) {
+                        return;
+                    }
+
+                    const delta = getClientX(event) - startX;
+                    const nextWidth = clamp(startWidth + delta, MIN_WIDTH, MAX_WIDTH);
+
+                    document.documentElement.style.setProperty('--wms-sidebar-width', `${nextWidth}px`);
+                    localStorage.setItem(SIDEBAR_WIDTH_KEY, String(nextWidth));
+
+                    event.preventDefault();
+                }
+
+                function stopResize() {
+                    if (!isResizing) {
+                        return;
+                    }
+
+                    isResizing = false;
+                    document.body.classList.remove('wms-sidebar-is-resizing');
+                }
+
+                handle.addEventListener('mousedown', startResize);
+                handle.addEventListener('touchstart', startResize, { passive: false });
+
+                window.addEventListener('mousemove', moveResize);
+                window.addEventListener('touchmove', moveResize, { passive: false });
+
+                window.addEventListener('mouseup', stopResize);
+                window.addEventListener('touchend', stopResize);
+                window.addEventListener('touchcancel', stopResize);
+            });
+        }
+
+        function setMobileToggleState(isOpen) {
+            document.querySelectorAll('[data-wms-mobile-open]').forEach((button) => {
+                button.setAttribute('aria-expanded', isOpen ? 'true' : 'false');
+            });
+
+            document.body.classList.toggle('wms-mobile-nav-open', isOpen);
+        }
+
+        function closeMobileSidebar() {
+            document.documentElement.dataset.wmsMobileSidebar = 'closed';
+            setMobileToggleState(false);
+        }
+
+        function openMobileSidebar() {
+            document.documentElement.dataset.wmsMobileSidebar = 'open';
+            setMobileToggleState(true);
+        }
+
+        function toggleMobileSidebar() {
+            if (document.documentElement.dataset.wmsMobileSidebar === 'open') {
+                closeMobileSidebar();
+                return;
+            }
+
+            openMobileSidebar();
+        }
+
+        function bindSidebarControls() {
+            applySidebarWidth();
+            applySidebarState();
+            applyMenuState();
+            bindMenuControls();
+            bindSidebarResize();
+
+            document.querySelectorAll('[data-wms-sidebar-toggle]').forEach((button) => {
+                if (button.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                button.dataset.wmsBound = '1';
+
+                button.addEventListener('click', function () {
+                    const root = document.documentElement;
+                    const next = root.dataset.wmsSidebar === 'collapsed' ? 'expanded' : 'collapsed';
+
+                    root.dataset.wmsSidebar = next;
+                    localStorage.setItem(SIDEBAR_STATE_KEY, next);
+
+                    applySidebarState();
+                });
+            });
+
+            document.querySelectorAll('[data-wms-brand-toggle]').forEach((button) => {
+                if (button.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                button.dataset.wmsBound = '1';
+
+                button.addEventListener('click', function (event) {
+                    const root = document.documentElement;
+
+                    if (root.dataset.wmsSidebar !== 'collapsed') {
+                        return;
+                    }
+
+                    event.preventDefault();
+                    event.stopPropagation();
+
+                    root.dataset.wmsSidebar = 'expanded';
+                    localStorage.setItem(SIDEBAR_STATE_KEY, 'expanded');
+
+                    applySidebarState();
+                    applyMenuState();
+                });
+            });
+
+            closeMobileSidebar();
+
+            document.querySelectorAll('[data-wms-mobile-open]').forEach((button) => {
+                if (button.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                button.dataset.wmsBound = '1';
+
+                button.addEventListener('click', function (event) {
+                    event.preventDefault();
+                    toggleMobileSidebar();
+                });
+            });
+
+            document.querySelectorAll('[data-wms-mobile-close]').forEach((button) => {
+                if (button.dataset.wmsBound === '1') {
+                    return;
+                }
+
+                button.dataset.wmsBound = '1';
+                button.addEventListener('click', closeMobileSidebar);
+            });
+
+            document.querySelectorAll('.wms-sidebar-link[wire\\:navigate], .wms-sidebar-heading-button[wire\\:navigate]').forEach((link) => {
+                if (link.dataset.wmsMobileBound === '1') {
+                    return;
+                }
+
+                link.dataset.wmsMobileBound = '1';
+
+                link.addEventListener('click', function () {
+                    document.querySelectorAll('.wms-sidebar-link.is-active, .wms-sidebar-heading-button.is-active').forEach((activeLink) => {
+                        activeLink.classList.remove('is-active');
+                    });
+
+                    link.classList.add('is-active');
+
+                    const selectedGroup = link.closest('[data-wms-menu-group]');
+
+                    if (selectedGroup) {
+                        selectMenuGroup(selectedGroup, true);
+                    }
+
+                    applySidebarWidth();
+                    closeMobileSidebar();
+                });
+            });
+        }
+
+        applySidebarWidth();
+        applySidebarState();
+
+        document.addEventListener('DOMContentLoaded', bindSidebarControls);
+        document.addEventListener('livewire:navigated', bindSidebarControls);
+    })();
+</script>
+</body>
+</html>
diff --git a/tests/Browser/Layout/FixedSidebarMainScrollTest.php b/tests/Browser/Layout/FixedSidebarMainScrollTest.php
new file mode 100644
index 00000000..bafe783e
--- /dev/null
+++ b/tests/Browser/Layout/FixedSidebarMainScrollTest.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Tests\Browser\Layout;
+
+use App\Models\User;
+use Laravel\Dusk\Browser;
+use Tests\DuskTestCase;
+
+class FixedSidebarMainScrollTest extends DuskTestCase
+{
+    /**
+     * The document must not scroll; only the right-hand main content area may scroll.
+     */
+    public function test_document_does_not_scroll_when_main_content_scrolls(): void
+    {
+        $user = User::factory()->create();
+
+        $this->browse(function (Browser $browser) use ($user): void {
+            $browser
+                ->loginAs($user)
+                ->visit('/dashboard')
+                ->waitFor('[data-test="desktop-sidebar"]')
+                ->waitFor('[data-test="main-content"]');
+
+            $browser->script(<<<'JS'
+                const main = document.querySelector('[data-test="main-content"]');
+                const filler = document.createElement('div');
+
+                filler.setAttribute('data-test', 'scroll-filler');
+                filler.style.height = '2600px';
+
+                main.appendChild(filler);
+
+                window.scrollTo(0, 800);
+                document.documentElement.scrollTop = 800;
+                document.body.scrollTop = 800;
+                main.scrollTop = 900;
+            JS);
+
+            $documentScrollTop = $browser->script(
+                'return Math.round(window.scrollY || document.documentElement.scrollTop || document.body.scrollTop || 0);'
+            )[0];
+
+            $mainScrollTop = $browser->script(
+                'return Math.round(document.querySelector("[data-test=\"main-content\"]").scrollTop);'
+            )[0];
+
+            $sidebarTop = $browser->script(
+                'return Math.round(document.querySelector("[data-test=\"desktop-sidebar\"]").getBoundingClientRect().top);'
+            )[0];
+
+            $this->assertSame(0, $documentScrollTop);
+            $this->assertSame(0, $sidebarTop);
+            $this->assertGreaterThan(0, $mainScrollTop);
+        });
+    }
+}
diff --git a/tests/Browser/Layout/FixedSidebarScrollTest.php b/tests/Browser/Layout/FixedSidebarScrollTest.php
new file mode 100644
index 00000000..5df76186
--- /dev/null
+++ b/tests/Browser/Layout/FixedSidebarScrollTest.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace Tests\Browser\Layout;
+
+use App\Models\User;
+use Laravel\Dusk\Browser;
+use Tests\DuskTestCase;
+
+class FixedSidebarScrollTest extends DuskTestCase
+{
+    /**
+     * Ensure only the main content area scrolls while the desktop sidebar stays fixed.
+     */
+    public function test_only_main_content_area_scrolls_while_sidebar_remains_fixed(): void
+    {
+        $user = User::factory()->create();
+
+        $this->browse(function (Browser $browser) use ($user): void {
+            $browser
+                ->loginAs($user)
+                ->visit('/dashboard')
+                ->waitFor('[data-test="desktop-sidebar"]')
+                ->waitFor('[data-test="main-content"]');
+
+            $browser->script(<<<'JS'
+                const main = document.querySelector('[data-test="main-content"]');
+                const filler = document.createElement('div');
+
+                filler.setAttribute('data-test', 'scroll-filler');
+                filler.style.height = '2200px';
+
+                main.appendChild(filler);
+                main.scrollTop = 900;
+            JS);
+
+            $sidebarTop = $browser->script(
+                'return Math.round(document.querySelector("[data-test=\"desktop-sidebar\"]").getBoundingClientRect().top);'
+            )[0];
+
+            $bodyScrollTop = $browser->script(
+                'return Math.round(document.scrollingElement.scrollTop);'
+            )[0];
+
+            $mainScrollTop = $browser->script(
+                'return Math.round(document.querySelector("[data-test=\"main-content\"]").scrollTop);'
+            )[0];
+
+            $this->assertSame(0, $sidebarTop);
+            $this->assertSame(0, $bodyScrollTop);
+            $this->assertGreaterThan(0, $mainScrollTop);
+        });
+    }
+}