Update templates/index.html

templates/index.html

@@ -24,6 +24,7 @@
       width: 100%;
       max-width: 480px;
       text-align: center;
+      position: relative;
     }
     h1 {
       font-size: 1.8rem;
@@ -69,16 +70,34 @@
       border-radius: 1rem;
       box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
     }
+    .spinner {
+      margin-top: 1rem;
+      display: none;
+      border: 6px solid #f3f3f3;
+      border-top: 6px solid #4f46e5;
+      border-radius: 50%;
+      width: 36px;
+      height: 36px;
+      animation: spin 1s linear infinite;
+      margin-left: auto;
+      margin-right: auto;
+    }
+    @keyframes spin {
+      0% { transform: rotate(0deg); }
+      100% { transform: rotate(360deg); }
+    }
   </style>
 </head>
 <body>
   <div class="card">
     <h1>✨ AI Vision</h1>
-    <form action="/" enctype="multipart/form-data" method="post">
+    <form id="uploadForm" action="/" enctype="multipart/form-data" method="post">
       <input type="file" name="file" accept="image/*" required />
       <button class="btn" type="submit">Generate Caption</button>
     </form>
 
+    <div id="spinner" class="spinner"></div>
+
     {% if caption %}
     <img src="data:image/png;base64,{{ image_data }}" class="preview-img" />
     <div class="result">
@@ -87,5 +106,14 @@
     </div>
     {% endif %}
   </div>
+
+  <script>
+    const form = document.getElementById('uploadForm');
+    const spinner = document.getElementById('spinner');
+
+    form.addEventListener('submit', () => {
+      spinner.style.display = 'block';
+    });
+  </script>
 </body>
-</html>
+</html>