.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
  }
  .logo {
    color: #1a73e8;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
  }
  .input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
  }
  .form-input {
    flex-grow: 1;
    padding: 0.8rem 1.2rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.625rem;
    font-size: 1rem;
    transition: border-color 0.2s ease;
  }
  .form-input:focus {
    outline: none;
    border-color: #1a73e8;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
  }
  .action-btn {
    padding: 0.8rem 2rem;
    background-color: #1a73e8;
    color: white;
    border: none;
    border-radius: 0.625rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }
  .action-btn:hover {
    background-color: #1556b0;
  }
  .result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.625rem;
    display: none;
  }
  .result-title {
    color: #1a73e8;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
  }
  .download-url {
    background-color: #f3f4f6;
    padding: 1rem;
    border-radius: 0.5rem;
    white-space: pre-wrap;
    word-break: break-all;
    margin-bottom: 1rem;
  }
  .button-group {
    display: flex;
    gap: 0.75rem;
  }
  .secondary-btn {
    padding: 0.6rem 1.2rem;
    background-color: #f3f4f6;
    color: #374151;
    border: none;
    border-radius: 0.4375rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }
  .secondary-btn:hover {
    background-color: #e5e7eb;
  }
  @media (max-width: 640px) {
    .input-group {
      flex-direction: column;
    }
    .form-input {
      width: 100%;
    }
  }