body{font-family:Arial,sans-serif;background:#f8f9fa;padding:20px}.app{text-align:center}.drag-drop-zone{border:2px dashed #ccc;padding:50px;text-align:center;cursor:pointer;transition:background-color .2s}.dragging{background-color:#f0f8ff}.file-link{margin-top:20px}.link-container{display:flex;gap:10px}.link-container input{width:300px;padding:5px}.link-container button{padding:5px 10px;background:#007bff;color:#fff;border:none;cursor:pointer}