diff --git a/k8s/01-namespace.yaml b/k8s/01-namespace.yaml
new file mode 100644
index 0000000..a1c9461
--- /dev/null
+++ b/k8s/01-namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: gmrelay-test
diff --git a/k8s/02-secrets.yaml b/k8s/02-secrets.yaml
new file mode 100644
index 0000000..0c7da3b
--- /dev/null
+++ b/k8s/02-secrets.yaml
@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: gmrelay-secrets
+  namespace: gmrelay-test
+type: Opaque
+stringData:
+  POSTGRES_PASSWORD: "TestPassword123"
+  TELEGRAM_BOT_TOKEN: "8641931558:AAGBARuuTZUXX7V3YrtJwN3y_q0NUVkFrqk"
+  TELEGRAM_BOT_USERNAME: "GmRelayTestBot"
diff --git a/k8s/03-configmap.yaml b/k8s/03-configmap.yaml
new file mode 100644
index 0000000..7c3ea26
--- /dev/null
+++ b/k8s/03-configmap.yaml
@@ -0,0 +1,9 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: gmrelay-config
+  namespace: gmrelay-test
+data:
+  ConnectionStrings__gmrelaydb: "Host=postgres;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=$(POSTGRES_PASSWORD)"
+  Telegram__MiniAppUrl: ""
+  ASPNETCORE_URLS: "http://+:8080"
diff --git a/k8s/04-postgres.yaml b/k8s/04-postgres.yaml
new file mode 100644
index 0000000..ea60c59
--- /dev/null
+++ b/k8s/04-postgres.yaml
@@ -0,0 +1,68 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-pvc
+  namespace: gmrelay-test
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: postgres
+  namespace: gmrelay-test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: postgres
+  template:
+    metadata:
+      labels:
+        app: postgres
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:17-alpine
+          ports:
+            - containerPort: 5432
+          env:
+            - name: POSTGRES_USER
+              value: "gmrelay"
+            - name: POSTGRES_DB
+              value: "gmrelay_db"
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: POSTGRES_PASSWORD
+          volumeMounts:
+            - name: postgres-data
+              mountPath: /var/lib/postgresql/data
+          resources:
+            requests:
+              memory: "128Mi"
+              cpu: "100m"
+            limits:
+              memory: "512Mi"
+              cpu: "500m"
+      volumes:
+        - name: postgres-data
+          persistentVolumeClaim:
+            claimName: postgres-pvc
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  namespace: gmrelay-test
+spec:
+  selector:
+    app: postgres
+  ports:
+    - port: 5432
+      targetPort: 5432
diff --git a/k8s/05-web.yaml b/k8s/05-web.yaml
new file mode 100644
index 0000000..9563a5e
--- /dev/null
+++ b/k8s/05-web.yaml
@@ -0,0 +1,88 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gmrelay-web
+  namespace: gmrelay-test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: gmrelay-web
+  template:
+    metadata:
+      labels:
+        app: gmrelay-web
+    spec:
+      containers:
+        - name: web
+          image: gmrelay-web:design-refresh
+          ports:
+            - containerPort: 8080
+          envFrom:
+            - configMapRef:
+                name: gmrelay-config
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: POSTGRES_PASSWORD
+            - name: ConnectionStrings__gmrelaydb
+              value: "Host=postgres;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=$(POSTGRES_PASSWORD)"
+            - name: Telegram__BotToken
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: TELEGRAM_BOT_TOKEN
+            - name: Telegram__BotUsername
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: TELEGRAM_BOT_USERNAME
+            - name: Telegram__MiniAppUrl
+              value: ""
+          resources:
+            requests:
+              memory: "128Mi"
+              cpu: "100m"
+            limits:
+              memory: "512Mi"
+              cpu: "500m"
+          volumeMounts:
+            - name: dataprotection-keys
+              mountPath: /app/dataprotection-keys
+      volumes:
+        - name: dataprotection-keys
+          emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: gmrelay-web
+  namespace: gmrelay-test
+spec:
+  selector:
+    app: gmrelay-web
+  ports:
+    - port: 8080
+      targetPort: 8080
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: gmrelay-web
+  namespace: gmrelay-test
+  annotations:
+    nginx.ingress.kubernetes.io/rewrite-target: /
+spec:
+  rules:
+    - host: gmrelay.local
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: gmrelay-web
+                port:
+                  number: 8080
diff --git a/k8s/06-bot.yaml b/k8s/06-bot.yaml
new file mode 100644
index 0000000..a4ccc56
--- /dev/null
+++ b/k8s/06-bot.yaml
@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gmrelay-bot
+  namespace: gmrelay-test
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: gmrelay-bot
+  template:
+    metadata:
+      labels:
+        app: gmrelay-bot
+    spec:
+      containers:
+        - name: bot
+          image: gmrelay-bot:design-refresh
+          ports:
+            - containerPort: 8081
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: POSTGRES_PASSWORD
+            - name: ConnectionStrings__gmrelaydb
+              value: "Host=postgres;Port=5432;Database=gmrelay_db;Username=gmrelay;Password=$(POSTGRES_PASSWORD)"
+            - name: Telegram__BotToken
+              valueFrom:
+                secretKeyRef:
+                  name: gmrelay-secrets
+                  key: TELEGRAM_BOT_TOKEN
+            - name: Telegram__MiniAppUrl
+              value: ""
+          resources:
+            requests:
+              memory: "128Mi"
+              cpu: "100m"
+            limits:
+              memory: "256Mi"
+              cpu: "500m"
diff --git a/src/GmRelay.Web/Components/App.razor b/src/GmRelay.Web/Components/App.razor
index 374c17b..3a904ab 100644
--- a/src/GmRelay.Web/Components/App.razor
+++ b/src/GmRelay.Web/Components/App.razor
@@ -10,7 +10,7 @@
     <ResourcePreloader />
     <link rel="preconnect" href="https://fonts.googleapis.com" />
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
-    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet" />
+    <link href="https://fonts.googleapis.com/css2?family=Cinzel+Decorative:wght@400;700&family=Cinzel:wght@400;600;700&family=Jura:wght@400;500;600;700&display=swap" rel="stylesheet" />
     <link rel="stylesheet" href="@Assets["app.css"]" />
     <link rel="stylesheet" href="@Assets["GmRelay.Web.styles.css"]" />
     <script src="https://telegram.org/js/telegram-web-app.js"></script>
diff --git a/src/GmRelay.Web/Components/Layout/MainLayout.razor.css b/src/GmRelay.Web/Components/Layout/MainLayout.razor.css
index 47c29e4..2953d97 100644
--- a/src/GmRelay.Web/Components/Layout/MainLayout.razor.css
+++ b/src/GmRelay.Web/Components/Layout/MainLayout.razor.css
@@ -30,8 +30,9 @@
 
 /* === Error UI === */
 #blazor-error-ui {
-    background: var(--bg-secondary);
-    border-top: 1px solid var(--border-color);
+    background: var(--status-danger-bg);
+    color: var(--status-danger);
+    border-top: 1px solid rgba(239, 68, 68, 0.15);
     bottom: 0;
     box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
     box-sizing: border-box;
@@ -41,8 +42,9 @@
     position: fixed;
     width: 100%;
     z-index: 1000;
-    color: var(--text-secondary);
     font-size: 0.875rem;
+    font-family: 'Jura', sans-serif;
+    font-weight: 500;
 }
 
     #blazor-error-ui .reload {
diff --git a/src/GmRelay.Web/Components/Layout/NavMenu.razor.css b/src/GmRelay.Web/Components/Layout/NavMenu.razor.css
index 4194f99..5eb2268 100644
--- a/src/GmRelay.Web/Components/Layout/NavMenu.razor.css
+++ b/src/GmRelay.Web/Components/Layout/NavMenu.razor.css
@@ -23,12 +23,11 @@
 }
 
 .nav-brand-text {
+    font-family: 'Cinzel Decorative', 'Cinzel', serif;
     font-size: 1.125rem;
     font-weight: 700;
-    background: var(--accent-gradient);
-    -webkit-background-clip: text;
-    -webkit-text-fill-color: transparent;
-    background-clip: text;
+    letter-spacing: 0.04em;
+    color: var(--text-primary);
 }
 
 .nav-toggle {
@@ -87,9 +86,10 @@
 }
 
 .nav-section ::deep .nav-item.active {
-    background: rgba(124, 58, 237, 0.15);
-    color: var(--accent-primary);
-    border: 1px solid rgba(124, 58, 237, 0.2);
+    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(34, 211, 238, 0.08) 100%);
+    color: var(--text-accent);
+    border: 1px solid rgba(139, 92, 246, 0.25);
+    box-shadow: 0 0 12px rgba(139, 92, 246, 0.1);
 }
 
 .nav-icon {
@@ -145,7 +145,7 @@
     border: 1px solid transparent;
     border-radius: var(--radius-sm);
     color: var(--text-muted);
-    font-family: 'Inter', sans-serif;
+    font-family: 'Jura', sans-serif;
     font-size: 0.8125rem;
     cursor: pointer;
     transition: all var(--transition-normal);
diff --git a/src/GmRelay.Web/wwwroot/app.css b/src/GmRelay.Web/wwwroot/app.css
index 8b837b4..3561089 100644
--- a/src/GmRelay.Web/wwwroot/app.css
+++ b/src/GmRelay.Web/wwwroot/app.css
@@ -1,60 +1,58 @@
 /* ============================================
-   GM-Relay Design System v1.9.9
-   Dark RPG Dashboard Theme
+   GM-Relay Design System v2.0.0
+   Dark RPG Dashboard Theme — Refined
    ============================================ */
 
-/* --- Google Fonts loaded in App.razor --- */
-
 /* === CSS Custom Properties === */
 :root {
-    /* Background */
-    --bg-primary: #0a0e1a;
-    --bg-secondary: #111827;
-    --bg-card: rgba(17, 24, 39, 0.7);
-    --bg-card-hover: rgba(24, 33, 54, 0.85);
-    --bg-surface: rgba(255, 255, 255, 0.04);
-    --bg-input: rgba(255, 255, 255, 0.06);
+    /* Background — deeper, richer darks */
+    --bg-primary: #050810;
+    --bg-secondary: #0a0f1c;
+    --bg-card: rgba(10, 15, 28, 0.75);
+    --bg-card-hover: rgba(15, 22, 40, 0.9);
+    --bg-surface: rgba(255, 255, 255, 0.035);
+    --bg-input: rgba(255, 255, 255, 0.05);
 
-    /* Accent */
-    --accent-primary: #7c3aed;
-    --accent-primary-hover: #6d28d9;
-    --accent-secondary: #06b6d4;
-    --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
-    --accent-gradient-hover: linear-gradient(135deg, #6d28d9 0%, #0891b2 100%);
+    /* Accent — sharper, more vibrant */
+    --accent-primary: #8b5cf6;
+    --accent-primary-hover: #7c3aed;
+    --accent-secondary: #22d3ee;
+    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #22d3ee 100%);
+    --accent-gradient-hover: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
 
     /* Text */
-    --text-primary: #f1f5f9;
+    --text-primary: #e2e8f0;
     --text-secondary: #94a3b8;
     --text-muted: #64748b;
     --text-accent: #a78bfa;
 
     /* Status */
     --status-success: #22c55e;
-    --status-success-bg: rgba(34, 197, 94, 0.15);
+    --status-success-bg: rgba(34, 197, 94, 0.12);
     --status-warning: #f59e0b;
-    --status-warning-bg: rgba(245, 158, 11, 0.15);
+    --status-warning-bg: rgba(245, 158, 11, 0.12);
     --status-danger: #ef4444;
-    --status-danger-bg: rgba(239, 68, 68, 0.15);
-    --status-info: #06b6d4;
-    --status-info-bg: rgba(6, 182, 212, 0.15);
+    --status-danger-bg: rgba(239, 68, 68, 0.12);
+    --status-info: #22d3ee;
+    --status-info-bg: rgba(34, 211, 238, 0.12);
     --status-neutral: #64748b;
-    --status-neutral-bg: rgba(100, 116, 139, 0.15);
+    --status-neutral-bg: rgba(100, 116, 139, 0.12);
 
     /* Border */
-    --border-color: rgba(255, 255, 255, 0.08);
-    --border-glow: rgba(124, 58, 237, 0.4);
+    --border-color: rgba(255, 255, 255, 0.06);
+    --border-glow: rgba(139, 92, 246, 0.35);
 
     /* Glass */
-    --glass-bg: rgba(255, 255, 255, 0.05);
-    --glass-border: rgba(255, 255, 255, 0.1);
-    --glass-blur: 16px;
+    --glass-bg: rgba(255, 255, 255, 0.04);
+    --glass-border: rgba(255, 255, 255, 0.08);
+    --glass-blur: 20px;
 
     /* Shadows */
-    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
-    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
-    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
-    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.2);
-    --shadow-glow-hover: 0 0 30px rgba(124, 58, 237, 0.35);
+    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
+    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
+    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
+    --shadow-glow: 0 0 24px rgba(139, 92, 246, 0.18);
+    --shadow-glow-hover: 0 0 36px rgba(139, 92, 246, 0.3);
 
     /* Radius */
     --radius-sm: 8px;
@@ -64,8 +62,8 @@
 
     /* Transition */
     --transition-fast: 0.15s ease;
-    --transition-normal: 0.25s ease;
-    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
+    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
 
     /* Sidebar */
     --sidebar-width: 260px;
@@ -96,7 +94,7 @@ html {
 }
 
 html, body {
-    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+    font-family: 'Jura', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
     background-color: var(--bg-primary);
     color: var(--text-primary);
     margin: 0;
@@ -106,22 +104,61 @@ html, body {
     -moz-osx-font-smoothing: grayscale;
 }
 
+/* Atmospheric background */
+body::before {
+    content: '';
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    pointer-events: none;
+    z-index: 0;
+    background:
+        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(139, 92, 246, 0.08) 0%, transparent 60%),
+        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(34, 211, 238, 0.05) 0%, transparent 50%),
+        radial-gradient(ellipse 50% 40% at 50% 90%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
+    animation: atmosphere-drift 25s ease-in-out infinite alternate;
+}
+
+@keyframes atmosphere-drift {
+    0% { transform: translate(0, 0) scale(1); }
+    100% { transform: translate(-2%, 1%) scale(1.02); }
+}
+
+/* Subtle grain overlay */
+body::after {
+    content: '';
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    pointer-events: none;
+    z-index: 1;
+    opacity: 0.025;
+    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
+    background-repeat: repeat;
+    background-size: 256px 256px;
+}
+
 /* === Typography === */
 h1, h2, h3, h4, h5, h6 {
+    font-family: 'Cinzel', 'Cinzel Decorative', serif;
     color: var(--text-primary);
     font-weight: 600;
-    letter-spacing: -0.02em;
+    letter-spacing: 0.02em;
     line-height: 1.3;
     margin-top: 0;
 }
 
-h1 { font-size: 1.875rem; }
-h2 { font-size: 1.5rem; }
-h3 { font-size: 1.25rem; }
+h1 { font-size: 1.75rem; }
+h2 { font-size: 1.375rem; }
+h3 { font-size: 1.125rem; }
 
 h1:focus { outline: none; }
 
-p { line-height: 1.6; }
+p { line-height: 1.7; }
 
 a {
     color: var(--accent-secondary);
@@ -130,13 +167,13 @@ a {
 }
 
 a:hover {
-    color: #22d3ee;
+    color: #67e8f9;
 }
 
 /* === Scrollbar === */
 ::-webkit-scrollbar {
-    width: 6px;
-    height: 6px;
+    width: 5px;
+    height: 5px;
 }
 
 ::-webkit-scrollbar-track {
@@ -144,12 +181,12 @@ a:hover {
 }
 
 ::-webkit-scrollbar-thumb {
-    background: rgba(255, 255, 255, 0.15);
+    background: rgba(255, 255, 255, 0.12);
     border-radius: 3px;
 }
 
 ::-webkit-scrollbar-thumb:hover {
-    background: rgba(255, 255, 255, 0.25);
+    background: rgba(255, 255, 255, 0.22);
 }
 
 /* === Glass Card === */
@@ -161,13 +198,34 @@ a:hover {
     border-radius: var(--radius-lg);
     padding: 1.5rem;
     transition: all var(--transition-smooth);
+    position: relative;
+    z-index: 2;
+}
+
+.glass-card::before {
+    content: '';
+    position: absolute;
+    inset: 0;
+    border-radius: inherit;
+    padding: 1px;
+    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, transparent 40%, transparent 60%, rgba(34, 211, 238, 0.1) 100%);
+    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
+    -webkit-mask-composite: xor;
+    mask-composite: exclude;
+    pointer-events: none;
+    opacity: 0;
+    transition: opacity var(--transition-normal);
+}
+
+.glass-card:hover::before {
+    opacity: 1;
 }
 
 .glass-card:hover {
     background: var(--bg-card-hover);
     border-color: var(--border-glow);
     box-shadow: var(--shadow-glow-hover);
-    transform: translateY(-2px);
+    transform: translateY(-3px);
 }
 
 /* === Buttons === */
@@ -178,44 +236,53 @@ a:hover {
     padding: 0.625rem 1.25rem;
     border: none;
     border-radius: var(--radius-sm);
-    font-family: 'Inter', sans-serif;
+    font-family: 'Jura', sans-serif;
     font-size: 0.875rem;
-    font-weight: 500;
+    font-weight: 600;
     cursor: pointer;
     transition: all var(--transition-normal);
     text-decoration: none;
     line-height: 1.4;
+    letter-spacing: 0.02em;
+    position: relative;
+    overflow: hidden;
+    z-index: 2;
 }
 
 .btn-gm-primary {
     background: var(--accent-gradient);
     color: white;
-    box-shadow: 0 2px 12px rgba(124, 58, 237, 0.3);
+    box-shadow: 0 2px 16px rgba(139, 92, 246, 0.35);
 }
 
 .btn-gm-primary:hover {
     background: var(--accent-gradient-hover);
-    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.45);
-    transform: translateY(-1px);
+    box-shadow: 0 4px 24px rgba(139, 92, 246, 0.5);
+    transform: translateY(-2px);
     color: white;
 }
 
 .btn-gm-primary:active {
     transform: translateY(0);
+    box-shadow: 0 1px 8px rgba(139, 92, 246, 0.3);
 }
 
 .btn-gm-success {
     background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
     color: white;
-    box-shadow: 0 2px 12px rgba(34, 197, 94, 0.3);
+    box-shadow: 0 2px 16px rgba(34, 197, 94, 0.3);
 }
 
 .btn-gm-success:hover {
-    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.45);
-    transform: translateY(-1px);
+    box-shadow: 0 4px 24px rgba(34, 197, 94, 0.45);
+    transform: translateY(-2px);
     color: white;
 }
 
+.btn-gm-success:active {
+    transform: translateY(0);
+}
+
 .btn-gm-outline {
     background: transparent;
     color: var(--text-secondary);
@@ -226,22 +293,28 @@ a:hover {
     background: var(--bg-surface);
     color: var(--text-primary);
     border-color: var(--glass-border);
+    box-shadow: 0 0 12px rgba(139, 92, 246, 0.1);
 }
 
 .btn-gm-danger {
     background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
     color: white;
+    box-shadow: 0 2px 12px rgba(239, 68, 68, 0.25);
 }
 
 .btn-gm-danger:hover {
     box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
-    transform: translateY(-1px);
+    transform: translateY(-2px);
     color: white;
 }
 
+.btn-gm-danger:active {
+    transform: translateY(0);
+}
+
 .btn-gm[disabled],
 .btn-gm:disabled {
-    opacity: 0.5;
+    opacity: 0.45;
     pointer-events: none;
 }
 
@@ -254,14 +327,15 @@ a:hover {
     border-radius: 9999px;
     font-size: 0.75rem;
     font-weight: 600;
-    letter-spacing: 0.02em;
+    letter-spacing: 0.03em;
     white-space: nowrap;
+    font-family: 'Jura', sans-serif;
 }
 
 .status-badge::before {
     content: '';
-    width: 6px;
-    height: 6px;
+    width: 5px;
+    height: 5px;
     border-radius: 50%;
     flex-shrink: 0;
 }
@@ -269,35 +343,35 @@ a:hover {
 .status-success {
     background: var(--status-success-bg);
     color: var(--status-success);
-    border: 1px solid rgba(34, 197, 94, 0.25);
+    border: 1px solid rgba(34, 197, 94, 0.2);
 }
 .status-success::before { background: var(--status-success); box-shadow: 0 0 6px var(--status-success); }
 
 .status-warning {
     background: var(--status-warning-bg);
     color: var(--status-warning);
-    border: 1px solid rgba(245, 158, 11, 0.25);
+    border: 1px solid rgba(245, 158, 11, 0.2);
 }
 .status-warning::before { background: var(--status-warning); box-shadow: 0 0 6px var(--status-warning); }
 
 .status-danger {
     background: var(--status-danger-bg);
     color: var(--status-danger);
-    border: 1px solid rgba(239, 68, 68, 0.25);
+    border: 1px solid rgba(239, 68, 68, 0.2);
 }
 .status-danger::before { background: var(--status-danger); box-shadow: 0 0 6px var(--status-danger); }
 
 .status-info {
     background: var(--status-info-bg);
     color: var(--status-info);
-    border: 1px solid rgba(6, 182, 212, 0.25);
+    border: 1px solid rgba(34, 211, 238, 0.2);
 }
 .status-info::before { background: var(--status-info); box-shadow: 0 0 6px var(--status-info); }
 
 .status-neutral {
     background: var(--status-neutral-bg);
     color: var(--status-neutral);
-    border: 1px solid rgba(100, 116, 139, 0.25);
+    border: 1px solid rgba(100, 116, 139, 0.2);
 }
 .status-neutral::before { background: var(--status-neutral); }
 
@@ -309,16 +383,18 @@ a:hover {
     border: 1px solid var(--border-color);
     border-radius: var(--radius-sm);
     color: var(--text-primary);
-    font-family: 'Inter', sans-serif;
+    font-family: 'Jura', sans-serif;
     font-size: 0.875rem;
+    font-weight: 500;
     transition: all var(--transition-normal);
     outline: none;
+    letter-spacing: 0.01em;
 }
 
 .gm-form-control:focus {
     border-color: var(--accent-primary);
-    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
-    background: rgba(255, 255, 255, 0.08);
+    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
+    background: rgba(255, 255, 255, 0.07);
 }
 
 .gm-form-control::placeholder {
@@ -329,9 +405,10 @@ a:hover {
     display: block;
     margin-bottom: 0.375rem;
     font-size: 0.8125rem;
-    font-weight: 500;
+    font-weight: 600;
     color: var(--text-secondary);
-    letter-spacing: 0.01em;
+    letter-spacing: 0.03em;
+    font-family: 'Jura', sans-serif;
 }
 
 .gm-form-hint {
@@ -357,10 +434,12 @@ select {
     border: 1px solid var(--border-color) !important;
     border-radius: var(--radius-sm) !important;
     color: var(--text-primary) !important;
-    font-family: 'Inter', sans-serif !important;
+    font-family: 'Jura', sans-serif !important;
     font-size: 0.875rem !important;
+    font-weight: 500 !important;
     padding: 0.625rem 0.875rem !important;
     transition: all var(--transition-normal) !important;
+    letter-spacing: 0.01em !important;
 }
 
 .form-control:focus,
@@ -368,14 +447,14 @@ input:focus,
 textarea:focus,
 select:focus {
     border-color: var(--accent-primary) !important;
-    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15) !important;
-    background: rgba(255, 255, 255, 0.08) !important;
+    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12) !important;
+    background: rgba(255, 255, 255, 0.07) !important;
     outline: none !important;
 }
 
 /* Color scheme for date/time pickers */
 input[type="datetime-local"]::-webkit-calendar-picker-indicator {
-    filter: invert(0.7);
+    filter: invert(0.65);
 }
 
 select option {
@@ -389,18 +468,20 @@ select option {
     border-collapse: separate;
     border-spacing: 0;
     font-size: 0.875rem;
+    font-family: 'Jura', sans-serif;
 }
 
 .gm-table thead th {
-    padding: 0.75rem 1rem;
+    padding: 0.875rem 1rem;
     text-align: left;
-    font-weight: 600;
-    font-size: 0.75rem;
+    font-weight: 700;
+    font-size: 0.7rem;
     text-transform: uppercase;
-    letter-spacing: 0.06em;
+    letter-spacing: 0.08em;
     color: var(--text-muted);
     border-bottom: 1px solid var(--border-color);
     background: transparent;
+    font-family: 'Jura', sans-serif;
 }
 
 .gm-table tbody td {
@@ -470,23 +551,26 @@ select option {
     display: flex;
     align-items: center;
     gap: 0.625rem;
+    font-weight: 500;
+    position: relative;
+    z-index: 2;
 }
 
 .gm-alert-info {
     background: var(--status-info-bg);
-    border: 1px solid rgba(6, 182, 212, 0.2);
+    border: 1px solid rgba(34, 211, 238, 0.15);
     color: var(--status-info);
 }
 
 .gm-alert-danger {
     background: var(--status-danger-bg);
-    border: 1px solid rgba(239, 68, 68, 0.2);
+    border: 1px solid rgba(239, 68, 68, 0.15);
     color: var(--status-danger);
 }
 
 .gm-alert-success {
     background: var(--status-success-bg);
-    border: 1px solid rgba(34, 197, 94, 0.2);
+    border: 1px solid rgba(34, 197, 94, 0.15);
     color: var(--status-success);
 }
 
@@ -499,6 +583,9 @@ select option {
     padding: 0;
     margin: 0 0 1.5rem 0;
     font-size: 0.8125rem;
+    font-family: 'Jura', sans-serif;
+    position: relative;
+    z-index: 2;
 }
 
 .gm-breadcrumb li {
@@ -525,13 +612,14 @@ select option {
 
 .gm-breadcrumb .active {
     color: var(--text-primary);
+    font-weight: 600;
 }
 
 /* === Loading Skeleton === */
 .skeleton {
     background: linear-gradient(90deg,
         var(--bg-surface) 25%,
-        rgba(255, 255, 255, 0.08) 50%,
+        rgba(255, 255, 255, 0.06) 50%,
         var(--bg-surface) 75%);
     background-size: 200% 100%;
     animation: skeleton-shimmer 1.5s ease-in-out infinite;
@@ -562,6 +650,8 @@ select option {
     justify-content: center;
     padding: 3rem 1.5rem;
     text-align: center;
+    position: relative;
+    z-index: 2;
 }
 
 .empty-state-icon {
@@ -575,12 +665,14 @@ select option {
     font-weight: 600;
     color: var(--text-primary);
     margin-bottom: 0.5rem;
+    font-family: 'Cinzel', serif;
 }
 
 .empty-state-text {
     font-size: 0.875rem;
     color: var(--text-muted);
     max-width: 320px;
+    line-height: 1.6;
 }
 
 /* === Page Container === */
@@ -588,22 +680,29 @@ select option {
     max-width: 960px;
     margin: 0 auto;
     padding: 1.5rem;
-    animation: fadeIn 0.4s ease-out;
+    animation: fadeIn 0.5s ease-out;
+    position: relative;
+    z-index: 2;
 }
 
 .page-header {
     margin-bottom: 2rem;
+    position: relative;
+    z-index: 2;
 }
 
 .page-header h2 {
-    font-size: 1.5rem;
+    font-size: 1.375rem;
     margin-bottom: 0.25rem;
+    font-family: 'Cinzel', serif;
+    font-weight: 700;
 }
 
 .page-header p {
     color: var(--text-muted);
     font-size: 0.875rem;
     margin: 0;
+    font-family: 'Jura', sans-serif;
 }
 
 /* === Grid === */
@@ -611,6 +710,8 @@ select option {
     display: grid;
     grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
     gap: 1rem;
+    position: relative;
+    z-index: 2;
 }
 
 /* === Batch bulk operations === */
@@ -618,6 +719,8 @@ select option {
     display: grid;
     gap: 1rem;
     margin-bottom: 1.5rem;
+    position: relative;
+    z-index: 2;
 }
 
 .batch-bulk-card {
@@ -627,6 +730,14 @@ select option {
     border: 1px solid var(--glass-border);
     border-radius: var(--radius-md);
     padding: 1.25rem;
+    position: relative;
+    z-index: 2;
+    transition: all var(--transition-smooth);
+}
+
+.batch-bulk-card:hover {
+    border-color: var(--border-glow);
+    box-shadow: var(--shadow-glow);
 }
 
 .batch-bulk-header {
@@ -641,6 +752,7 @@ select option {
     font-size: 1rem;
     margin-bottom: 0.25rem;
     overflow-wrap: anywhere;
+    font-family: 'Cinzel', serif;
 }
 
 .batch-bulk-header p {
@@ -676,6 +788,8 @@ select option {
 /* === Campaign templates === */
 .campaign-template-panel {
     margin-bottom: 1.5rem;
+    position: relative;
+    z-index: 2;
 }
 
 .campaign-template-fields {
@@ -707,6 +821,7 @@ select option {
     font-size: 0.9375rem;
     margin-bottom: 0.25rem;
     overflow-wrap: anywhere;
+    font-family: 'Cinzel', serif;
 }
 
 .campaign-template-info p {
@@ -747,12 +862,12 @@ select option {
 
 /* === Animations === */
 @keyframes fadeIn {
-    from { opacity: 0; transform: translateY(8px); }
+    from { opacity: 0; transform: translateY(10px); }
     to { opacity: 1; transform: translateY(0); }
 }
 
 @keyframes slideUp {
-    from { opacity: 0; transform: translateY(20px); }
+    from { opacity: 0; transform: translateY(24px); }
     to { opacity: 1; transform: translateY(0); }
 }
 
@@ -767,28 +882,28 @@ select option {
 }
 
 @keyframes glow-pulse {
-    0%, 100% { box-shadow: 0 0 15px rgba(124, 58, 237, 0.15); }
-    50% { box-shadow: 0 0 25px rgba(124, 58, 237, 0.3); }
+    0%, 100% { box-shadow: 0 0 15px rgba(139, 92, 246, 0.12); }
+    50% { box-shadow: 0 0 28px rgba(139, 92, 246, 0.25); }
 }
 
 .animate-fade-in {
-    animation: fadeIn 0.4s ease-out both;
+    animation: fadeIn 0.5s ease-out both;
 }
 
 .animate-slide-up {
-    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
+    animation: slideUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
 }
 
 /* Stagger children animation */
 .stagger-children > * {
-    animation: fadeIn 0.4s ease-out both;
+    animation: fadeIn 0.5s ease-out both;
 }
-.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
-.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
-.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
-.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
-.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
-.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }
+.stagger-children > *:nth-child(1) { animation-delay: 0.06s; }
+.stagger-children > *:nth-child(2) { animation-delay: 0.12s; }
+.stagger-children > *:nth-child(3) { animation-delay: 0.18s; }
+.stagger-children > *:nth-child(4) { animation-delay: 0.24s; }
+.stagger-children > *:nth-child(5) { animation-delay: 0.30s; }
+.stagger-children > *:nth-child(6) { animation-delay: 0.36s; }
 
 /* === Blazor Overrides === */
 .valid.modified:not([type=checkbox]) {
@@ -809,7 +924,7 @@ select option {
 
 .blazor-error-boundary {
     background: var(--status-danger-bg);
-    border: 1px solid rgba(239, 68, 68, 0.2);
+    border: 1px solid rgba(239, 68, 68, 0.15);
     padding: 1rem 1.25rem;
     color: var(--status-danger);
     border-radius: var(--radius-md);
@@ -824,7 +939,9 @@ select option {
 .form-label {
     color: var(--text-secondary) !important;
     font-size: 0.8125rem !important;
-    font-weight: 500 !important;
+    font-weight: 600 !important;
+    font-family: 'Jura', sans-serif !important;
+    letter-spacing: 0.03em !important;
 }
 
 .form-text {
@@ -850,8 +967,10 @@ select option {
     left: -50%;
     width: 200%;
     height: 200%;
-    background: radial-gradient(ellipse at 30% 50%, rgba(124, 58, 237, 0.12) 0%, transparent 50%),
-                radial-gradient(ellipse at 70% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
+    background:
+        radial-gradient(ellipse at 30% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
+        radial-gradient(ellipse at 70% 50%, rgba(34, 211, 238, 0.1) 0%, transparent 50%),
+        radial-gradient(ellipse at 50% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 40%);
     animation: bg-drift 20s ease-in-out infinite alternate;
 }
 
@@ -862,10 +981,10 @@ select option {
 
 .login-card {
     position: relative;
-    z-index: 1;
+    z-index: 2;
     background: var(--glass-bg);
-    backdrop-filter: blur(20px);
-    -webkit-backdrop-filter: blur(20px);
+    backdrop-filter: blur(24px);
+    -webkit-backdrop-filter: blur(24px);
     border: 1px solid var(--glass-border);
     border-radius: var(--radius-xl);
     padding: 2.5rem;
@@ -873,7 +992,21 @@ select option {
     max-width: 400px;
     margin: 1rem;
     text-align: center;
-    animation: slideUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
+    animation: slideUp 0.7s cubic-bezier(0.4, 0, 0.2, 1);
+    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(139, 92, 246, 0.1);
+}
+
+.login-card::before {
+    content: '';
+    position: absolute;
+    inset: 0;
+    border-radius: inherit;
+    padding: 1px;
+    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, transparent 35%, transparent 65%, rgba(34, 211, 238, 0.15) 100%);
+    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
+    -webkit-mask-composite: xor;
+    mask-composite: exclude;
+    pointer-events: none;
 }
 
 .login-logo {
@@ -894,12 +1027,15 @@ select option {
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-clip: text;
+    font-family: 'Cinzel Decorative', 'Cinzel', serif;
+    letter-spacing: 0.04em;
 }
 
 .login-subtitle {
     color: var(--text-muted);
     font-size: 0.875rem;
     margin-bottom: 2rem;
+    font-family: 'Jura', sans-serif;
 }
 
 /* === Telegram Mini App entry === */
@@ -911,6 +1047,8 @@ select option {
     justify-content: center;
     padding: 1rem;
     background: var(--bg-primary);
+    position: relative;
+    z-index: 2;
 }
 
 .mini-app-auth-card {
@@ -921,6 +1059,8 @@ select option {
     border-radius: var(--radius-md);
     background: var(--glass-bg);
     text-align: center;
+    position: relative;
+    z-index: 2;
 }
 
 .mini-app-logo {
@@ -936,6 +1076,7 @@ select option {
 .mini-app-auth-card h1 {
     font-size: 1.375rem;
     margin-bottom: 0.5rem;
+    font-family: 'Cinzel Decorative', 'Cinzel', serif;
 }
 
 .mini-app-auth-card p {
@@ -966,6 +1107,8 @@ body.telegram-mini-app .content {
 /* === Mobile Sessions Cards (instead of table) === */
 .session-card-mobile {
     display: none;
+    position: relative;
+    z-index: 2;
 }
 
 body.telegram-mini-app .session-table-desktop {
@@ -984,10 +1127,13 @@ body.telegram-mini-app .session-card-mobile {
     padding: 1rem;
     margin-bottom: 0.75rem;
     transition: all var(--transition-smooth);
+    position: relative;
+    z-index: 2;
 }
 
 .session-card:hover {
     border-color: var(--border-glow);
+    box-shadow: var(--shadow-glow);
 }
 
 .session-card-header {
@@ -1094,6 +1240,8 @@ body.telegram-mini-app .session-card-mobile {
     text-align: center;
     padding: 2rem;
     animation: fadeIn 0.5s ease-out;
+    position: relative;
+    z-index: 2;
 }
 
 .error-page-icon {
@@ -1105,6 +1253,7 @@ body.telegram-mini-app .session-card-mobile {
     font-size: 1.5rem;
     font-weight: 700;
     margin-bottom: 0.5rem;
+    font-family: 'Cinzel', serif;
 }
 
 .error-page-text {
@@ -1128,10 +1277,12 @@ body.telegram-mini-app .session-card-mobile {
 
 /* === Participant list === */
 .participant-panel {
-    background: rgba(0, 0, 0, 0.2);
+    background: rgba(0, 0, 0, 0.25);
     border-radius: 0.75rem;
     padding: 0.75rem;
     margin: 0.5rem 0;
+    position: relative;
+    z-index: 2;
 }
 
 .participant-list {
@@ -1148,6 +1299,11 @@ body.telegram-mini-app .session-card-mobile {
     background: rgba(255, 255, 255, 0.03);
     border-radius: 0.5rem;
     gap: 0.5rem;
+    transition: background var(--transition-fast);
+}
+
+.participant-row:hover {
+    background: rgba(255, 255, 255, 0.05);
 }
 
 .participant-info {
@@ -1159,8 +1315,9 @@ body.telegram-mini-app .session-card-mobile {
 }
 
 .participant-name {
-    font-weight: 500;
+    font-weight: 600;
     color: var(--text-primary);
+    font-family: 'Jura', sans-serif;
 }
 
 .participant-username {
@@ -1172,9 +1329,293 @@ body.telegram-mini-app .session-card-mobile {
     background: transparent;
     border: none;
     color: var(--text-primary);
-    font-weight: 500;
+    font-weight: 600;
     cursor: pointer;
     font-size: inherit;
-    font-family: inherit;
+    font-family: 'Jura', sans-serif;
     padding: 0;
+    transition: color var(--transition-fast);
+}
+
+.btn-gm-link:hover {
+    color: var(--accent-secondary);
+}
+
+/* === Sidebar refinements (MainLayout & NavMenu) === */
+.page {
+    display: flex;
+    min-height: 100vh;
+    position: relative;
+    z-index: 2;
+}
+
+.sidebar {
+    width: var(--sidebar-width);
+    background: var(--bg-secondary);
+    border-right: 1px solid var(--border-color);
+    display: flex;
+    flex-direction: column;
+    position: fixed;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    z-index: 10;
+    overflow-y: auto;
+    overflow-x: hidden;
+}
+
+.main-area {
+    flex: 1;
+    margin-left: var(--sidebar-width);
+    min-height: 100vh;
+    position: relative;
+    z-index: 2;
+}
+
+.content {
+    padding: 1.5rem;
+    min-height: 100vh;
+}
+
+.nav-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 1.25rem 1rem;
+    border-bottom: 1px solid var(--border-color);
+}
+
+.nav-brand {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    text-decoration: none;
+    color: var(--text-primary);
+}
+
+.nav-brand-icon {
+    width: 1.75rem;
+    height: 1.75rem;
+    object-fit: contain;
+}
+
+.nav-brand-text {
+    font-family: 'Cinzel Decorative', 'Cinzel', serif;
+    font-size: 1.125rem;
+    font-weight: 700;
+    letter-spacing: 0.04em;
+    color: var(--text-primary);
+}
+
+.nav-toggle {
+    display: none;
+    background: none;
+    border: none;
+    color: var(--text-secondary);
+    cursor: pointer;
+    padding: 0.5rem;
+    border-radius: var(--radius-sm);
+    transition: all var(--transition-fast);
+}
+
+.nav-toggle:hover {
+    background: var(--bg-surface);
+    color: var(--text-primary);
+}
+
+.nav-body {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    padding: 1rem;
+    gap: 0.5rem;
+}
+
+.nav-section {
+    display: flex;
+    flex-direction: column;
+    gap: 0.25rem;
+    margin-bottom: auto;
+}
+
+.nav-item {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.625rem 0.875rem;
+    border-radius: var(--radius-sm);
+    color: var(--text-secondary);
+    text-decoration: none;
+    font-size: 0.875rem;
+    font-weight: 600;
+    font-family: 'Jura', sans-serif;
+    letter-spacing: 0.02em;
+    transition: all var(--transition-fast);
+    border: 1px solid transparent;
+}
+
+.nav-item:hover {
+    background: var(--bg-surface);
+    color: var(--text-primary);
+    border-color: var(--border-color);
+}
+
+.nav-item.active {
+    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(34, 211, 238, 0.08) 100%);
+    color: var(--text-accent);
+    border-color: rgba(139, 92, 246, 0.25);
+    box-shadow: 0 0 12px rgba(139, 92, 246, 0.1);
+}
+
+.nav-item.active .nav-icon {
+    color: var(--accent-primary);
+}
+
+.nav-icon {
+    width: 1.125rem;
+    height: 1.125rem;
+    flex-shrink: 0;
+    color: var(--text-muted);
+    transition: color var(--transition-fast);
+}
+
+.nav-item:hover .nav-icon {
+    color: var(--text-primary);
+}
+
+.nav-footer {
+    margin-top: auto;
+    padding-top: 1rem;
+    border-top: 1px solid var(--border-color);
+    display: flex;
+    flex-direction: column;
+    gap: 0.75rem;
+}
+
+.nav-user {
+    display: flex;
+    align-items: center;
+    gap: 0.625rem;
+    padding: 0.5rem 0.75rem;
+}
+
+.nav-user-avatar {
+    width: 2rem;
+    height: 2rem;
+    border-radius: 50%;
+    background: var(--accent-gradient);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 0.875rem;
+    font-weight: 700;
+    color: white;
+    flex-shrink: 0;
+    font-family: 'Jura', sans-serif;
+}
+
+.nav-user-name {
+    font-size: 0.8125rem;
+    font-weight: 600;
+    color: var(--text-secondary);
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+    font-family: 'Jura', sans-serif;
+}
+
+.nav-logout-btn {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    border-radius: var(--radius-sm);
+    color: var(--text-muted);
+    background: transparent;
+    border: 1px solid transparent;
+    cursor: pointer;
+    font-size: 0.8125rem;
+    font-weight: 600;
+    font-family: 'Jura', sans-serif;
+    letter-spacing: 0.02em;
+    transition: all var(--transition-fast);
+    width: 100%;
+}
+
+.nav-logout-btn:hover {
+    background: rgba(239, 68, 68, 0.08);
+    color: var(--status-danger);
+    border-color: rgba(239, 68, 68, 0.15);
+}
+
+.nav-version {
+    font-size: 0.6875rem;
+    color: var(--text-muted);
+    text-align: center;
+    font-family: 'Jura', sans-serif;
+    letter-spacing: 0.05em;
+    opacity: 0.6;
+}
+
+/* === Blazor error UI === */
+#blazor-error-ui {
+    background: var(--status-danger-bg);
+    color: var(--status-danger);
+    bottom: 0;
+    box-shadow: 0 -1px 2px rgba(0,0,0,0.2);
+    display: none;
+    left: 0;
+    padding: 0.6rem 1.25rem;
+    position: fixed;
+    width: 100%;
+    z-index: 1000;
+    font-family: 'Jura', sans-serif;
+    font-size: 0.875rem;
+    font-weight: 500;
+}
+
+#blazor-error-ui .dismiss {
+    cursor: pointer;
+    position: absolute;
+    right: 0.75rem;
+    top: 0.5rem;
+}
+
+#blazor-error-ui .reload {
+    color: var(--text-accent);
+    margin-left: 0.5rem;
+    text-decoration: underline;
+}
+
+/* === Mobile responsive sidebar === */
+@media (max-width: 768px) {
+    .sidebar {
+        width: 100%;
+        position: fixed;
+        z-index: 100;
+        transform: translateX(-100%);
+        transition: transform var(--transition-normal);
+    }
+
+    .sidebar.open {
+        transform: translateX(0);
+    }
+
+    .main-area {
+        margin-left: 0;
+    }
+
+    .nav-toggle {
+        display: block;
+        position: fixed;
+        top: 1rem;
+        left: 1rem;
+        z-index: 101;
+        background: var(--bg-secondary);
+        border: 1px solid var(--border-color);
+    }
+
+    .nav-body.open {
+        display: flex;
+    }
 }