Add minimal Web UI server

src/webui/static/style.css

@@ -0,0 +1,136 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+    min-height: 100vh;
+    color: #333;
+}
+
+.container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 20px;
+}
+
+header {
+    text-align: center;
+    margin-bottom: 40px;
+    color: white;
+}
+
+header h1 {
+    font-size: 2.5rem;
+    margin-bottom: 10px;
+    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
+}
+
+header p {
+    font-size: 1.2rem;
+    opacity: 0.9;
+}
+
+main {
+    background: white;
+    border-radius: 12px;
+    padding: 30px;
+    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
+    margin-bottom: 20px;
+}
+
+.status-card {
+    background: #f8f9fa;
+    border-radius: 8px;
+    padding: 20px;
+    margin-bottom: 30px;
+    text-align: center;
+}
+
+.status-indicator {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 8px;
+    margin: 15px 0;
+}
+
+.status-dot {
+    width: 12px;
+    height: 12px;
+    border-radius: 50%;
+    background: #6c757d;
+}
+
+.status-dot.active {
+    background: #28a745;
+    animation: pulse 2s infinite;
+}
+
+@keyframes pulse {
+    0% { opacity: 1; }
+    50% { opacity: 0.5; }
+    100% { opacity: 1; }
+}
+
+.info-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+    gap: 20px;
+}
+
+.info-card {
+    background: #ffffff;
+    border: 1px solid #e9ecef;
+    border-radius: 8px;
+    padding: 20px;
+    text-align: center;
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.info-card:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
+}
+
+.info-card h3 {
+    color: #495057;
+    margin-bottom: 10px;
+}
+
+.info-card p {
+    color: #6c757d;
+    margin-bottom: 10px;
+}
+
+.info-card small {
+    color: #adb5bd;
+    font-style: italic;
+}
+
+footer {
+    text-align: center;
+    color: white;
+    opacity: 0.8;
+}
+
+@media (max-width: 768px) {
+    .container {
+        padding: 10px;
+    }
+    
+    header h1 {
+        font-size: 2rem;
+    }
+    
+    main {
+        padding: 20px;
+    }
+    
+    .info-grid {
+        grid-template-columns: 1fr;
+    }
+}