diff --git a/.github/agents/grafana.agent.md b/.github/agents/grafana.agent.md
index deeb277..455780f 100644
--- a/.github/agents/grafana.agent.md
+++ b/.github/agents/grafana.agent.md
@@ -1,7 +1,7 @@
 ---
 description: Analyze and interpret Grafana logs, traces, and metrics using MCP Grafana server
 tools: ['grafana/*', 'search', 'fetch']
-model: Claude Sonnet 4.5 (copilot)
+model: Claude Opus 4.5 (Preview) (copilot)
 ---
 
 # Grafana Log & Trace Analyzer Mode
diff --git a/.github/prompts/releasemanager.prompt.md b/.github/prompts/releasemanager.prompt.md
index 14f7535..c21a9d9 100644
--- a/.github/prompts/releasemanager.prompt.md
+++ b/.github/prompts/releasemanager.prompt.md
@@ -1,6 +1,6 @@
 ---
 agent: agent
-model: GPT-4.1 (copilot)
+model: Claude Opus 4.5 (Preview) (copilot)
 description: Generate release notes from a GitHub Pull Request URL
 tools: [runCommands]
 ---
diff --git a/.github/workflows/deploy-test.yml b/.github/workflows/deploy-test.yml
index 27fa445..567293f 100644
--- a/.github/workflows/deploy-test.yml
+++ b/.github/workflows/deploy-test.yml
@@ -58,7 +58,7 @@ jobs:
             --resource-group deveats-wpc2025-rg \
             --settings \
               ConnectionStrings__DefaultConnection="${{ secrets.CONNECTION_STRING_TEST }}" \
-              ASPNETCORE_ENVIRONMENT="Production" \
+              ASPNETCORE_ENVIRONMENT="Test" \
               OTEL_EXPORTER_OTLP_ENDPOINT="https://otlp-gateway-prod-eu-central-0.grafana.net/otlp" \
               OTEL_EXPORTER_OTLP_PROTOCOL="http/protobuf" \
               OTEL_RESOURCE_ATTRIBUTES="deployment.environment=test" \
diff --git a/src/DevEats.Web/Shared/MainLayout.razor b/src/DevEats.Web/Shared/MainLayout.razor
index f51eb2f..553bd38 100644
--- a/src/DevEats.Web/Shared/MainLayout.razor
+++ b/src/DevEats.Web/Shared/MainLayout.razor
@@ -1,29 +1,54 @@
 @inherits LayoutComponentBase
+@inject IWebHostEnvironment Environment
 
 <PageTitle>DevEats - Recensioni Ristoranti</PageTitle>
 
-<div class="app-wrapper">
+@if (!Environment.IsProduction())
+{
+    @* Environment Warning Banner - Only shown in non-production environments *@
+    <div class="env-warning-banner" role="status" aria-live="polite" aria-atomic="true">
+        <div class="banner-content">
+            @* Accessibility: Icon is decorative, hidden from screen readers *@
+            <i class="bi bi-exclamation-triangle-fill banner-icon" aria-hidden="true"></i>
+            <div class="banner-text">
+                This is a <strong>@Environment.EnvironmentName.ToUpper()</strong> environment
+            </div>
+        </div>
+    </div>
+}
+
+@* Accessibility: Replaced inline style with CSS class for better maintainability *@
+<div class="app-wrapper @(!Environment.IsProduction() ? "has-env-banner" : "")">
     <nav class="modern-navbar">
         <div class="container">
             <div class="navbar-content">
-                <a class="brand-logo" href="/">
-                    <div class="brand-icon">
-                        <i class="bi bi-shop"></i>
+                @* Accessibility: Added aria-label for screen readers *@
+                <a class="brand-logo" href="/" aria-label="DevEats Home">
+                    <div class="brand-icon" aria-hidden="true">
+                        <i class="bi bi-shop" aria-hidden="true"></i>
                     </div>
                     <span class="brand-text">Dev<span class="brand-highlight">Eats</span></span>
                 </a>
 
-                <button class="mobile-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">
-                    <span></span>
-                    <span></span>
-                    <span></span>
+                @* Accessibility: Added ARIA attributes for mobile menu button *@
+                <button class="mobile-toggle"
+                        type="button"
+                        data-bs-toggle="collapse"
+                        data-bs-target="#navbarNav"
+                        aria-label="Toggle navigation menu"
+                        aria-expanded="false"
+                        aria-controls="navbarNav">
+                    <span aria-hidden="true"></span>
+                    <span aria-hidden="true"></span>
+                    <span aria-hidden="true"></span>
                 </button>
 
                 <div class="collapse navbar-collapse" id="navbarNav">
                     <ul class="nav-menu">
                         <li class="nav-item">
                             <a class="nav-link-modern" href="/">
-                                <i class="bi bi-house-door-fill"></i>
+                                @* Accessibility: Decorative icon hidden from screen readers *@
+                                <i class="bi bi-house-door-fill" aria-hidden="true"></i>
                                 <span>Home</span>
                             </a>
                         </li>
@@ -33,7 +58,8 @@
         </div>
     </nav>
 
-    <main class="main-content">
+    @* Accessibility: Main content landmark with ID for skip link *@
+    <main class="main-content" id="main-content" tabindex="-1">
         @Body
     </main>
 
@@ -54,7 +80,8 @@
                         <span>Powered by .NET 8 & Blazor Server</span>
                     </div> *@
                     <div class="footer-love">
-                        Made with <i class="bi bi-heart-fill"></i> for hungry developers
+                        @* Accessibility: Decorative icon hidden from screen readers *@
+                        Made with <i class="bi bi-heart-fill" aria-hidden="true"></i> for hungry developers
                     </div>
                 </div>
             </div>
@@ -66,6 +93,69 @@
 </div>
 
 <style>
+    /* Skip Link for Keyboard Accessibility (WCAG 2.4.1) */
+    .skip-link {
+        position: absolute;
+        top: -40px;
+        left: 0;
+        background: #000;
+        color: #fff;
+        padding: 8px 16px;
+        text-decoration: none;
+        z-index: 2000;
+        border-radius: 0 0 4px 0;
+    }
+
+    .skip-link:focus {
+        top: 0;
+    }
+
+    /* Environment Warning Banner */
+    .env-warning-banner {
+        position: fixed;
+        top: 0;
+        left: 0;
+        right: 0;
+        /* Accessibility: Darker red gradient for WCAG AA 4.5:1 contrast with white text */
+        background: linear-gradient(135deg, #e53e3e 0%, #c53030 100%);
+        z-index: 1050;
+        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
+        padding: 1rem 0;
+    }
+
+    .banner-content {
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        gap: 0.75rem;
+        padding: 0 1.5rem;
+    }
+
+    .banner-icon {
+        font-size: 1.2rem;
+        color: white;
+        flex-shrink: 0;
+    }
+
+    .banner-text {
+        color: white;
+        font-size: 1rem;
+        font-weight: 500;
+        text-align: center;
+        line-height: 1.4;
+    }
+
+    .banner-text strong {
+        font-weight: 700;
+        letter-spacing: 0.5px;
+    }
+
+    @@media (prefers-reduced-motion: reduce) {
+        .env-warning-banner {
+            opacity: 1;
+        }
+    }
+
     /* App Wrapper */
     .app-wrapper {
         min-height: 100vh;
@@ -74,6 +164,11 @@
         background: #f7fafc;
     }
 
+    /* Accessibility: CSS class for environment banner margin instead of inline style */
+    .app-wrapper.has-env-banner {
+        margin-top: 56px;
+    }
+
     /* Modern Navbar */
     .modern-navbar {
         background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 50%, #feca57 100%);
@@ -96,11 +191,6 @@
         align-items: center;
         gap: 0.75rem;
         text-decoration: none;
-        transition: all 0.3s ease;
-    }
-
-    .brand-logo:hover {
-        transform: translateY(-2px);
     }
 
     .brand-icon {
@@ -169,7 +259,6 @@
         text-decoration: none;
         font-weight: 500;
         border-radius: 12px;
-        transition: all 0.3s ease;
         background: rgba(255, 255, 255, 0.1);
         border: 1px solid rgba(255, 255, 255, 0.15);
     }
@@ -177,7 +266,6 @@
     .nav-link-modern:hover {
         background: rgba(255, 255, 255, 0.2);
         color: white;
-        transform: translateY(-2px);
     }
 
     .nav-link-modern i {
@@ -207,18 +295,24 @@
         height: 4px;
         background: linear-gradient(90deg, #ff6b6b, #ff8e53, #feca57, #fdcb6e);
         background-size: 300% 100%;
-        animation: gradientShift 3s ease infinite;
     }
 
-    @@keyframes gradientShift {
-        0% {
-            background-position: 0% 50%;
+    /* Accessibility: Footer gradient animation only for users who haven't requested reduced motion */
+    @@media (prefers-reduced-motion: no-preference) {
+        .footer-decoration {
+            animation: gradientShift 3s ease infinite;
         }
-        50% {
-            background-position: 100% 50%;
-        }
-        100% {
-            background-position: 0% 50%;
+
+        @@keyframes gradientShift {
+            0% {
+                background-position: 0% 50%;
+            }
+            50% {
+                background-position: 100% 50%;
+            }
+            100% {
+                background-position: 0% 50%;
+            }
         }
     }
 
@@ -303,15 +397,37 @@
 
     .footer-love i {
         color: #f56565;
-        animation: heartbeat 1.5s ease infinite;
     }
 
-    @@keyframes heartbeat {
-        0%, 100% {
-            transform: scale(1);
+    /* Accessibility: Heart animation and hover transforms only for users who haven't requested reduced motion */
+    @@media (prefers-reduced-motion: no-preference) {
+        .brand-logo {
+            transition: all 0.3s ease;
+        }
+
+        .brand-logo:hover {
+            transform: translateY(-2px);
         }
-        50% {
-            transform: scale(1.2);
+
+        .nav-link-modern {
+            transition: all 0.3s ease;
+        }
+
+        .nav-link-modern:hover {
+            transform: translateY(-2px);
+        }
+
+        .footer-love i {
+            animation: heartbeat 1.5s ease infinite;
+        }
+
+        @@keyframes heartbeat {
+            0%, 100% {
+                transform: scale(1);
+            }
+            50% {
+                transform: scale(1.2);
+            }
         }
     }
 
@@ -355,6 +471,23 @@
         .footer-info {
             align-items: center;
         }
+
+        .env-warning-banner {
+            padding: 0.75rem 0;
+        }
+
+        .banner-text {
+            font-size: 0.875rem;
+        }
+
+        .banner-content {
+            gap: 0.5rem;
+            padding: 0 1rem;
+        }
+
+        .banner-icon {
+            font-size: 1.1rem;
+        }
     }
 
     @@media (max-width: 768px) {