body {
      font-family: 'Inter', sans-serif;
      background-color: #f0f4f8;
      margin: 0;
      padding: 2rem;
      color: #333;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
    }

    .container {
      max-width: 600px;
      width: 100%;
      background: #fff;
      border-radius: 12px;
      padding: 2rem;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
      box-sizing: border-box;
      text-align: center;
    }

    .upload-area {
      border: 2px dashed #ccc;
      border-radius: 8px;
      padding: 3rem 2rem;
      margin-bottom: 2rem;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .upload-area:hover {
      border-color: #2791e7;
      background-color: #f5f9ff;
    }

    .upload-area.highlight {
      border-color: #2791e7;
      background-color: #e8f0fe;
    }

    .upload-icon {
      width: 60px;
      height: 60px;
      margin-bottom: 1rem;
      opacity: 0.6;
    }

    h1 {
      color: #1e97e7;
      margin-bottom: 1.5rem;
    }

    .options {
      margin: 2rem 0;
      text-align: left;
    }

    .option-group {
      margin-bottom: 1.5rem;
    }

    label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
    }

    select, input[type="range"] {
      width: 100%;
      padding: 0.5rem;
      border-radius: 6px;
      border: 1px solid #ccc;
      margin-bottom: 0.5rem;
    }

    .file-info {
      margin-top: 1rem;
      font-size: 0.9rem;
      color: #666;
    }

    button {
      background-color: #1a73e8;
      color: white;
      border: none;
      border-radius: 8px;
      padding: 0.8rem 1.5rem;
      font-size: 1rem;
      cursor: pointer;
      transition: background-color 0.3s ease;
      margin: 0.5rem;
    }

    button:hover {
      background-color: #155fc3;
    }

    button:disabled {
      background-color: #ccc;
      cursor: not-allowed;
    }

    .button-group {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 1.5rem;
    }

    .progress-container {
      width: 100%;
      background-color: #f1f1f1;
      border-radius: 5px;
      margin: 1rem 0;
      display: none;
    }

    .progress-bar {
      height: 10px;
      border-radius: 5px;
      background-color: #4CAF50;
      width: 0%;
      transition: width 0.3s;
    }

    @media (prefers-color-scheme: dark) {
      body {
        background-color: #121212;
        color: #e0e0e0;
      }

      .container {
        background: #1e1e1e;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
      }

      .upload-area {
        border-color: #555;
      }

      .upload-area:hover {
        border-color: #2791e7;
        background-color: #2c2c2c;
      }

      .upload-area.highlight {
        border-color: #2791e7;
        background-color: #2c2c2c;
      }

      select, input[type="range"] {
        background-color: #2c2c2c;
        color: #fff;
        border: 1px solid #555;
      }

      .file-info {
        color: #aaa;
      }

      button {
        background-color: #2791e7;
      }

      button:hover {
        background-color: #1c54b2;
      }

      .progress-container {
        background-color: #333;
      }
    }

    @media (max-width: 600px) {
      body {
        padding: 1rem;
      }

      .container {
        padding: 1.5rem;
      }

      .upload-area {
        padding: 2rem 1rem;
      }

      .button-group {
        flex-direction: column;
      }

      button {
        width: 100%;
        margin: 0.5rem 0;
      }
    }