public/styles/main.css

@@ -3426,4 +3426,38 @@ html {
 	#firmware-view .deploy-btn:hover:not(:disabled)::before {
 		left: -100% !important;
 	}
+}
+
+/* Cluster view specific error styling */
+#cluster-members-container .error {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.9rem 1.1rem;
+    margin-top: 0.75rem;
+    border-radius: 12px;
+    background: linear-gradient(135deg, rgba(244, 67, 54, 0.15) 0%, rgba(244, 67, 54, 0.08) 100%);
+    border: 1px solid rgba(244, 67, 54, 0.35);
+    color: #ffcdd2;
+    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
+    height: auto;              /* override global 100% height */
+    justify-content: flex-start; /* override global centering */
+    text-align: left;          /* ensure left alignment */
+}
+
+#cluster-members-container .error::before {
+    content: '⚠️';
+    font-size: 1.2rem;
+    line-height: 1;
+    flex-shrink: 0;
+}
+
+#cluster-members-container .error strong {
+    color: #ffebee;
+    font-weight: 700;
+    margin-right: 0.25rem;
+}
+
+#cluster-members-container .error br {
+    display: none; /* tighten layout by avoiding forced line-breaks */
 }