body {
      font-family: monospace;
      background: #1a1a1a;
      color: #eee;
      padding: 20px;
      max-width: 900px;
      margin: 0 auto;
  }

  h2 {
      color: #fff;
      margin-bottom: 4px;
  }

  .subtitle {
      color: #666;
      font-size: 0.8rem;
      margin-bottom: 16px;
  }

  label {
      display: block;
      margin-top: 10px;
      font-size: 0.85rem;
      color: #aaa;
  }

  input,
  select {
      width: 100%;
      padding: 6px 8px;
      background: #2a2a2a;
      border: 1px solid #444;
      color: #eee;
      font-family: monospace;
      font-size: 0.9rem;
      border-radius: 3px;
      margin-top: 3px;
  }

  .row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
  }

  button {
      margin-top: 16px;
      padding: 7px 16px;
      background: #333;
      border: 1px solid #555;
      color: #eee;
      font-family: monospace;
      cursor: pointer;
      border-radius: 2px;
      font-size: 0.85rem;
  }

  button:hover {
      background: #444;
  }

  #output {
      margin-top: 20px;
      background: #000;
      border: 1px solid #333;
      padding: 14px;
      white-space: pre;
      font-size: 0.85rem;
      line-height: 1.7;
      display: none;
  }

  .copy-btn {
      margin-left: 8px;
  }

  .discord-btn {
      margin-left: 8px;
  }

  .btns {
      display: flex;
      flex-wrap: wrap;
  }

  optgroup {
      color: #888;
  }

  .strips-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 28px;
      margin-bottom: 8px;
  }

  .strips-header h3 {
      color: #fff;
      margin: 0;
      font-size: 1rem;
  }

  .refresh-btn {
      margin-top: 0;
      padding: 5px 14px;
      font-size: 0.8rem;
  }

  table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.78rem;
  }

  th {
      background: #222;
      color: #888;
      text-align: left;
      padding: 6px 8px;
      border-bottom: 1px solid #333;
      white-space: nowrap;
  }

  td {
      padding: 5px 8px;
      border-bottom: 1px solid #222;
      vertical-align: middle;
  }

  tr:hover td {
      background: #202020;
  }

  .tag-ifr {
      color: #5af;
  }

  .tag-vfr {
      color: #8f8;
  }

  .use-btn {
      padding: 3px 10px;
      margin-top: 0;
      font-size: 0.75rem;
  }

  .cs {
      color: #ffd600;
      font-weight: bold;
  }

  .rcs {
      color: #aaa;
      font-size: 0.75rem;
  }

  .route-cell {
      max-width: 160px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      color: #aaa;
  }

  .fl {
      color: #7cf;
  }

  .status-bar {
      font-size: 0.75rem;
      color: #555;
      margin-top: 6px;
  }

  .ac {
      color: #ccc;
  }