body {
    margin: 0;
    background: #000;
    color: white;
    font-family: sans-serif;
    display: flex;
    height: 100vh;
    overflow: hidden; /* Évite le scroll horizontal */
  }
  
  #sidebar {
    width: 250px;
    min-width: 250px; /* ← évite qu'il se rétrécisse */
    background-color: #1a1a1a;
    padding: 20px;
    box-sizing: border-box;
    border-right: 1px solid #333;
    overflow-y: auto;
    flex-shrink: 0; /* ← empêche de rétrécir */
  }
  
  #sidebar h2 {
    margin-top: 0;
  }
  
  canvas {
    flex: 1;
    display: block;
    background: #111;
    width: 100%;
    height: 100%;
  }
  
  .checkbox {
    margin: 10px 0;
    display: flex;
    align-items: center;
  }
  
  .checkbox label {
    margin-left: 8px;
    cursor: pointer;
  }

  #objectToggles h3 {
    font-size: 1rem;
    color: #ccc;
    margin-top: 1.2em;
    margin-bottom: 0.5em;
    border-bottom: 1px solid #444;
    padding-bottom: 0.2em;
  }