.converter {
    max-width: 700px;
    margin: 0 auto 40px auto;
  }

  .copy {
    font-size: 14px;
    color: #555;
    margin-bottom: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: left;
  }

  .button-container {
    display: flex;
    justify-content: center;
    margin: 30px 0;
  }

  .round-button {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    font-size: 25px;
    font-weight: bold;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
  }

  .round-button.red { background-color: #f44336; }
  .round-button.blue { background-color: #2196f3; }

  .result-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    flex-direction: row;
  }

  .result-label {
    width: 130px;
    font-weight: bold;
    text-align: right;
  }

  .result-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 2px solid #4caf50;
    border-radius: 6px;
    background: #f1f8e9;
    padding: 8px;
    color: #2e7d32;
    font-size: 15px;
    width: 250px;
    position: relative;
  }

  .copy-button {
    padding: 6px 10px;
    font-size: 13px;
    cursor: pointer;
    background: #eeeeee;
    border: 2px solid #cccccc;
    border-radius: 6px;
    margin-left: 10px;
  }

  .copied-msg {
    position: absolute;
    right: 80px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #4caf50;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
  }

  .copied-msg.visible {
    opacity: 1;
  }

  @media (max-width: 500px) {
    .result-layout {
      flex-direction: column;
      align-items: center;
    }
    .result-label {
      width: auto;
      text-align: center;
    }
  }