textarea { resize: vertical; }
    .result-box { background: #fff; border-radius: 10px; box-shadow: 0 2px 6px rgba(0,0,0,0.1); }
    .highlight { background-color: #fff3cd !important; }
    .density-bar {
      height: 10px;
      background: linear-gradient(to right, #28a745 0%, #ffc107 50%, #dc3545 100%);
      border-radius: 4px;
    }
    #wordCloud {
      width: 100%;
      height: 500px;
      border: 1px solid #ccc;
      background: #fff;
      margin-top: 30px;
      border-radius: 8px;
      position: relative;
    }
    .font-selector {
      max-width: 200px;
      margin-top: 10px;
    }