body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
  }
  
  .header-section {
    padding: 20px;
    margin-bottom: 30px;
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
  }
  
  .header-section h1 {
    margin-top: 0;
    color: #333;
  }
  
  .header-section p {
    margin-bottom: 0;
    color: #666;
  }
  
  .input-container {
    margin: 20px;
    display: flex;
    gap: 10px;
  }
  
  .action-button {
    padding: 8px 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background: #f0f0f0;
  }
  
  .action-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .video-container {
    width: 100%;
    max-width: 640px;
    margin: 20px auto;
  }
  
  #videoPreview {
    width: 100%;
    border-radius: 8px;
  }
  
  .hidden {
    display: none;
  }
  
  #output {
    margin: 20px;
    border: 1px solid #ddd;
    padding: 15px;
    height: 700px;
    overflow-y: auto;
    background-color: #fafafa;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  }
  
  .function-name {
    color: #0066cc;
    font-family: monospace;
    margin: 4px 0;
    padding: 4px 8px;
    background-color: #f0f8ff;
    border-left: 3px solid #0066cc;
  }
  
  .function-params {
    color: #666;
    font-family: monospace;
    margin: 4px 0;
    padding: 4px 8px;
    background-color: #f5f5f5;
    border-left: 3px solid #666;
    white-space: pre-wrap;
  }
  
  .api-response {
    color: #2e7d32;
    font-family: monospace;
    margin: 4px 0;
    padding: 4px 8px;
    background-color: #f1f8e9;
    border-left: 3px solid #2e7d32;
    white-space: pre-wrap;
  }
  
  .gemini-message {
    color: #6200ee;
    margin-bottom: 8px;
  }
  
  .user-message {
    color: #333;
    margin-bottom: 8px;
  }
  
  .text-input-container {
    flex: 1;
    display: flex;
    gap: 10px;
  }
  
  .text-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
  }
  
  .text-input:focus {
    outline: none;
    border-color: #6200ee;
  }