.zip-tool-body {
      font-family: Arial, sans-serif;
      max-width: 800px;
      margin: 0 auto;
      margin-top: 50px;
      background-color: #f0f2f5;
      user-select: none;
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      overflow-x: hidden;
    }
    #appTitle { color: #333; text-align: center; }
    .container {
      background-color: white; padding: 20px; border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1); position: relative;
    }
    .controls-main {
      display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px;
      margin-bottom: 20px; justify-content: center;
    }
    .zt-button {
      padding: 10px 15px; background-color: #007bff; color: white;
      border: none; border-radius: 4px; cursor: pointer; min-width: 150px;
      text-align: center; vertical-align: middle; display: inline-block;
    }
    .zt-button:hover:not(:disabled) { background-color: #0056b3; }
    .zt-button:disabled { background-color: #cccccc; cursor: not-allowed; }

    #dropZone {
      border: 3px dashed #ccc;
      border-radius: 8px;
      padding: 40px;
      text-align: center;
      color: #777;
      margin-bottom: 20px;
      background-color: #f9f9f9;
      transition: background-color 0.2s, border-color 0.2s;
    }
    #dropZone.dragover {
      background-color: #e9e9ff;
      border-color: #007bff;
    }
    #fileInput {
        display: none;
    }
    #selectFilesBtn {
        min-width: auto;
        margin-left: 10px;
    }


    #fileListContainer {
        margin-top: 20px;
        padding: 10px;
        border: 1px solid #eee;
        border-radius: 4px;
        background-color: #f9f9f9;
        min-height: 50px;
        max-height: 300px;
        overflow-y: auto;
    }
    #fileList {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    #fileList li {
        padding: 5px 8px;
        border-bottom: 1px solid #e0e0e0;
        font-size: 0.9em;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    #fileList li:last-child {
        border-bottom: none;
    }
    #fileList .file-path {
        word-break: break-all;
    }
    #fileList .remove-file-btn {
        background: none;
        border: none;
        color: #dc3545;
        cursor: pointer;
        font-size: 1.1em;
        padding: 0 5px;
    }
    #fileList .remove-file-btn:hover {
        color: #c82333;
    }


    #zipSettings {
        margin-bottom: 15px; padding: 10px; border: 1px solid #eee;
        border-radius: 4px; background-color: #f9f9f9;
    }
    #zipSettings label {
        display: block; margin-bottom: 5px; font-weight: bold;
    }
    #zipFileNameInput {
        width: 100%; padding: 8px; margin-bottom: 10px; border: 1px solid #ccc;
        border-radius: 3px; box-sizing: border-box;
    }

    #status { margin-top: 15px; text-align: center; color: #666; min-height: 20px; }

    @media (max-width: 768px) {
      .controls-main { flex-direction: column; align-items: center; }
      .controls-main .zt-button { width: 80%; margin-bottom: 5px; }
      #dropZone { padding: 25px; }
    }