.converter {
    max-width: 700px;
    margin: 0 auto 40px auto;
  }
  .copy {
    font-size: 14px;
    color: #555;
    margin-bottom: 20px;
  }
  .row-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
  }
  .label {
    font-weight: bold;
    margin-right: 4px;
    width: 160px;
    text-align: right;
  }
  input[type="number"],
  select {
    width: 200px;
    padding: 6px 10px;
    font-size: 18px;
    text-align: center;
    border: 2px solid #d7e2fa;
    border-radius: 6px;
    box-sizing: border-box;
  }
  .result-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    width: 100%;
  }
  .result-label {
    font-weight: bold;
    width: 130px;
    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: 16px;
    width: 240px;
    position: relative;
  }
  .copy-button {
    margin-left: 10px;
    padding: 6px 10px;
    font-size: 13px;
    cursor: pointer;
    background: #eeeeee;
    border: 2px solid #cccccc;
    border-radius: 6px;
    white-space: nowrap;
  }
  .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: 600px) {
    .row-layout, .result-layout {
      flex-direction: column;
      align-items: center;
    }
    .label, .result-label {
      width: auto;
      text-align: center;
    }
    .result-row {
      width: 250px;
    }
  }