body {
      font-family: Arial, sans-serif;
      margin: 40px;
      background-color: #000;
      color: #fff;
    }
    h1 {
      text-align: center;
      margin-bottom: 40px;
    }
    .container {
      max-width: 600px;
      margin: 0 auto;
    }
    label {
      display: block;
      margin-top: 1rem;
      font-weight: bold;
    }
    input[type="text"],
    input[type="number"] {
      width: 100%;
      padding: 8px;
      box-sizing: border-box;
      background-color: #2c2c2c;
      color: #fff;
      border: none;
      border-radius: 5px;
    }
    .uri-input-container {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .uri-input-container input[type="text"] {
      flex: 1;
    }
    .uri-input-container button {
      padding: 8px 16px;
      background-color: #28a745;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      white-space: nowrap;
      transition: background-color 0.3s ease;
    }
    .uri-input-container button:hover {
      background-color: #218838;
    }
    input[type="text"].drag-over {
      background-color: #3c3c3c;
      border: 2px dashed #28a745;
    }
    input[type="text"]:focus,
    input[type="number"]:focus {
      background-color: #2c2c2c;
      outline: none;
    }
    input[type="range"] {
      -webkit-appearance: none;
      width: 100%;
      height: 8px;
      border-radius: 5px;
      background: #555;
      outline: none;
      opacity: 0.9;
      transition: opacity 0.2s;
      margin-top: 5px;
    }
    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #fff;
      cursor: pointer;
      border: none;
    }
    input[type="range"]::-moz-range-thumb {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #fff;
      cursor: pointer;
      border: none;
    }
    .error {
      color: #ff4d4d;
      margin-top: 1rem;
      font-weight: bold;
    }
    .hidden {
      display: none;
    }
    .test-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin: 1rem 0;
    }
    .test-buttons button {
      cursor: pointer;
      padding: 10px 20px;
      border: none;
      border-radius: 5px;
      font-size: 1rem;
      background-color: #28a745;
      color: #fff;
      transition: background-color 0.3s ease;
      flex: 1 1 auto;
      min-width: 120px;
      text-align: center;
    }
    .test-buttons button:hover {
      background-color: #218838;
    }
    .listening-indicator {
      text-align: center;
      min-height: 1.5em;
      margin-top: 1rem;
      margin-bottom: 0.1rem;
    }
    #testResultArea {
      margin-top: 40px;
      background-color: #1a1a1a;
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 2px 5px rgba(255,255,255,0.1);
      text-align: center;
    }
    #testResultTitle {
      margin-bottom: 20px;
      font-size: 1.4rem;
      font-weight: bold;
      color: #007bff;
    }
    #testResultAnswers,
    #testResultTime,
    #testResultPvalue {
      margin-top: 10px;
    }
    #testResultConclusion {
      margin-top: 10px;
      color: #007bff;
    }
    #shareResultsBtn {
      cursor: pointer;
      padding: 10px 20px;
      border: none;
      border-radius: 5px;
      font-size: 1rem;
      margin-top: 20px;
      background-color: #dc3545;
      color: #fff;
      transition: background-color 0.3s ease;
      min-width: 120px;
      text-align: center;
    }
    #shareResultsBtn:hover {
      background-color: #c82333;
    }
    .progress-container {
      width: 100%;
      background-color: #444;
      border-radius: 5px;
      overflow: hidden;
      margin-top: 8px;
      height: 10px;
    }
    .progress-bar {
      height: 10px;
      background-color: #28a745;
      width: 0;
      transition: width 0.4s ease;
    }