UI: Improve cluster view error styling

Add scoped styles for #cluster-members-container .error: better contrast, spacing, icon; override global centering for left-aligned layout.

public/styles/main.css

@@ -3336,3 +3336,128 @@ html {
 		padding: 0.25rem;
 	}
 }
+
+@media (max-width: 768px) {
+	/* Use single scroll on mobile: let the page/body scroll */
+	body {
+		height: auto;
+		min-height: 100vh;
+		overflow-y: auto;
+	}
+	.container {
+		max-height: none;
+		overflow: visible;
+	}
+	.view-content,
+	#cluster-view.active {
+		max-height: none;
+		overflow: visible;
+	}
+	#cluster-members-container,
+	#firmware-container,
+	.firmware-nodes-list {
+		max-height: none;
+		overflow: visible;
+		padding-right: 0;
+	}
+}
+
+@media (max-width: 480px) {
+	/* Make primary node section more compact */
+	.cluster-header {
+		gap: 0.5rem;
+		padding: 0.5rem 0;
+	}
+	.primary-node-info {
+		gap: 0.35rem;
+		padding: 0.35rem 0.5rem;
+	}
+	.primary-node-label {
+		font-size: 0.8rem;
+	}
+	.primary-node-ip {
+		font-size: 0.85rem;
+		padding: 0.2rem 0.4rem;
+	}
+	.primary-node-refresh {
+		padding: 0.3rem;
+	}
+}
+
+/* Reduce tap highlight and flicker in firmware view */
+#firmware-view,
+.upload-btn,
+.upload-btn-compact,
+.deploy-btn,
+.cap-call-btn,
+.progress-refresh-btn,
+.clear-btn,
+.refresh-btn,
+.progress-item,
+.result-item,
+.file-info {
+	-webkit-tap-highlight-color: transparent;
+}
+
+/* Disable hover-driven animations/effects on touch devices in firmware view */
+@media (hover: none) {
+	#firmware-view .upload-btn:hover,
+	#firmware-view .upload-btn-compact:hover,
+	#firmware-view .deploy-btn:hover:not(:disabled),
+	#firmware-view .progress-refresh-btn:hover,
+	#firmware-view .cap-call-btn:hover,
+	#firmware-view .clear-btn:hover,
+	#firmware-view .refresh-btn:hover,
+	#firmware-view .progress-item:hover,
+	#firmware-view .result-item:hover,
+	#firmware-view .firmware-upload-progress:hover,
+	#firmware-view .firmware-upload-results:hover,
+	#firmware-view .file-info:hover {
+		transform: none !important;
+		box-shadow: none !important;
+	}
+
+	#firmware-view .progress-item:hover::before,
+	#firmware-view .result-item:hover::before {
+		opacity: 0 !important;
+	}
+
+	/* Prevent shimmer animation on deploy button hover */
+	#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 */
+}