* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      .content {
        width: 100%;
        border-radius: 15px;
        padding: 20px;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          sans-serif;
        margin: 20px auto;
      }

      .listen-button {
        background: transparent;
        border: 2px solid #8e1717;
        border-radius: 25px;
        color: #8e1717;
        padding: 0.625rem 1.4rem;
        font-size: 1.5rem;
        font-weight: 500;
        width: 70%;
        margin-bottom: 25px;
        cursor: pointer;
        transition: all 0.3s ease;
      }

      .language-options {
        margin-bottom: 20px;
      }

      .language-row {
        display: flex;
        align-items: center;
        margin-bottom: 15px;
        gap: 15px;
        justify-content: flex-start;
      }

      .play-btn {
        width: 50px;
        height: 50px;
        border: 2px solid #333;
        border-radius: 50%;
        background: white;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        font-size: 18px;
        color: #333;
        transition: all 0.2s ease;
        flex-shrink: 0;
      }

      .play-btn:hover {
        background: #333;
        color: white;
      }

      .play-btn.active {
        background: #23237c;
        border-color: #23237c;
        color: white;
      }

      .language-name {
        font-size: 18px;
        color: #333;
        font-weight: 500;
      }

      .player-controls {
        background: transparent;
        width: 70%;
        border-radius: 10px;
        padding: 15px;
        margin-top: 10px;
      }

      .progress-section {
        margin-bottom: 15px;
      }

      .progress-bar {
        width: 100%;
        height: 6px;
        background: #e0e0e0;
        border-radius: 3px;
        position: relative;
        cursor: pointer;
        margin-bottom: 8px;
      }

      .progress-fill {
        height: 100%;
        background: #23237c;
        border-radius: 3px;
        width: 0%;
        transition: width 0.1s ease;
        position: relative;
      }

      .progress-fill::after {
        content: "";
        position: absolute;
        right: -6px;
        top: -3px;
        width: 12px;
        height: 12px;
        background: #23237c;
        border-radius: 50%;
      }

      .controls-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      .shuffle-btn {
        background: none;
        border: none;
        font-size: 16px;
        color: #666;
        cursor: pointer;
        padding: 5px;
      }

      .main-controls {
        display: flex;
        align-items: center;
        gap: 15px;
      }

      .control-btn {
        background: #23237c;
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        color: white;
        font-size: 16px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
      }

      .control-btn:hover {
        background: #23237c;
        transform: scale(1.05);
      }

      .control-btn.play-pause {
        width: 50px;
        height: 50px;
        font-size: 20px;
      }

      #audio-player {
        display: flex;
        flex-direction: row-reverse;
        align-items: center;
        justify-content: space-between;
      }

      @media (max-width: 500px) {
        #audio-player {
          display: flex;
          flex-direction: column;
          align-items: center;
          justify-content: space-between;
        }
        .listen-button,
        .player-controls {
          width: 100%;
        }
      }

      .wave-btn {
        background: none;
        border: none;
        font-size: 18px;
        color: #666;
        cursor: pointer;
        padding: 5px;
      }

      .hidden {
        display: none;
      }

      .error-message {
        color: #e74c3c;
        font-size: 14px;
        margin-top: 10px;
        text-align: center;
      }

      @media (max-width: 400px) {
        .content {
          width: 90%;
          padding: 15px;
        }
      }