body, html {
    font-family: 'Inter', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f6f8;
    color: #1e1e1e;
  }
  
  .container {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
  }
  
  #infoPanel,
  .form-column,
  #output {
    background-color: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  }
  
    
  /* Left column / box */
  #infoPanel {
    flex: 1;
    max-width: 250px;
    max-height: 400px;
    text-align: left;
    color: rgb(1, 34, 73);
  }
  
  /* Middle column */
  .form-column {
    flex: 2;
    max-width: 600px;
  }
  
  /* Right column */
  #output {
    flex: 2;
    max-width: 650px;
    
  }
  
  h1, h2 {
    font-weight: 600;
    color: rgb(1, 34, 73);
  }

    h3 {
      font-weight: 600;
      color: #f11a0a;
  }
  
  label {
    font-weight: 500;
    display: block;
    margin-top: 1rem;
  }
  
  select,
  input[type="number"],
  input[type="text"] {
    width: 100%;
    padding: 0.6rem;
    font-size: 14px;
    border-radius: 6px;
    border: 1px solid #ccc;
    margin-top: 0.3rem;
  }
  
  button {
    background-color: #004b91;
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    font-size: 14px;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 1rem;
  }
  
  button:hover {
    background-color: #0063c6;
  }
  
  button[type="reset"] {
    background-color: #6c757d;
  }
  
  button[type="reset"]:hover {
    background-color: #5a6268;
  }
  
  #formLimitWarning {
    color: #d9534f;
    font-weight: bold;
    margin-top: 0.5em;
  }
  
  .instruction-heading {
    font-size: 1.2rem;
    border-bottom: 2px solid #ddd;
    margin-top: 1.5rem;
    padding-bottom: 0.25rem;
  }
  
  span[title] {
    color: #004b91;
    text-decoration: underline dotted;
    cursor: help;
  }
  
  #partTypeMessage {
    background-color: #fff3cd;
    border-left: 4px solid #ffecb5;
    color: #856404;
    padding: 0.5em;
    margin-top: 0.5em;
  }
  
  .output-section ul {
    padding-left: 1.2rem;
  }
  
  .output-section li {
    margin-bottom: 0.5rem;
  }
  
  .modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
  }
  
  .modal-content {
    background-color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  }

  .t-note {
    color: #d9534f;
    font-weight: bold;
  }