very basic UI

style.css

@@ -0,0 +1,66 @@
+body {
+  margin: 0;
+  overflow: hidden;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+}
+
+#ui-container {
+    position: absolute;
+    top: 20px;
+    left: 20px;
+    width: 280px;
+    background: rgba(255, 255, 255, 0.95);
+    backdrop-filter: blur(10px);
+    border-radius: 12px;
+    padding: 20px;
+    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
+    user-select: none;
+    max-height: 90vh;
+    overflow-y: auto;
+}
+
+.header h2 { margin: 0 0 5px 0; font-size: 18px; color: #333; }
+.header p { margin: 0; font-size: 12px; color: #666; }
+
+.section { margin-top: 20px; border-top: 1px solid #eee; padding-top: 15px; }
+.section h3 { margin: 0 0 10px 0; font-size: 14px; text-transform: uppercase; color: #888; letter-spacing: 0.5px; }
+
+.stat-row { display: flex; justify-content: space-between; font-weight: bold; margin-bottom: 10px; font-size: 16px; }
+
+.button-row { display: flex; gap: 10px; }
+button {
+    flex: 1;
+    padding: 8px 12px;
+    border: none;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: 600;
+    font-size: 13px;
+    transition: opacity 0.2s;
+}
+button:hover { opacity: 0.8; }
+
+.primary { background-color: #2563EB; color: white; }
+.danger { background-color: #ef4444; color: white; }
+.secondary { background-color: #e5e7eb; color: #374151; }
+
+/* Route List */
+#route-list { list-style: none; padding: 0; margin: 0; }
+#route-list li {
+    background: #f3f4f6;
+    margin-bottom: 8px;
+    padding: 10px;
+    border-radius: 6px;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    font-size: 14px;
+}
+#route-list li button {
+    flex: 0;
+    margin-left: 10px;
+    padding: 4px 8px;
+    font-size: 12px;
+    background: #fee2e2;
+    color: #991b1b;
+}