/* Reset and Base */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: #fdfdfd;
      color: #333;
    }

    .aindex {
    
    text-decoration: none;
    color: #0073e6;
    
    }

     ol li:has(a.aindex) {
     margin-left: 40px;
    }

    .pre {
      background:#f5f5f5 !important;
      padding:10px !important;
      border-left:3px solid #ccc !important;
    }


    .container {
      display: flex;
      height: 100vh;
      width: 100%;
    }

    /* Sidebar */
    .sidebar {
      width: 440px;
      background: #f1f1f1;
      padding: 20px;
      overflow-y: auto;
      transition: all 0.3s ease;
    }

    .sidebar.collapsed {
      width: 0;
      padding: 0;
      overflow: hidden;
    }

    .sidebar h2 {
      margin-bottom: 20px;
    }

    .sidebar nav ul {
      list-style: none;
    }

    .sidebar nav ul li {
      margin: 10px 0;
    }

    .sidebar nav ul li a {
      text-decoration: none;
      color: #0073e6;
    }

    .sidebar nav ul li a:hover {
      text-decoration: underline;
    }

    /* Content */
    .content {
      margin: 20px;
      flex: 1;
      padding: 40px;
      overflow-y: auto;
      transition: margin-left 0.3s ease;
    }

    .content.expanded {
      margin-left: 20px;
    }

    .content h1 {
      margin-bottom: 20px;
    }

    /* Toggle Button */
    .toggle-sidebar {
      position: fixed;
      top: 20px;
      left: 392px;
      z-index: 1000;
      background-color: #0073e6;
      color: white;
      border: none;
      padding: 8px 12px;
      font-size: 16px;
      border-radius: 4px;
      cursor: pointer;
      transition: left 0.3s ease;
    }

    .toggle-sidebar.collapsed {
      left: 0;
    }

    /* Mobile Responsive */
    @media (max-width: 768px) {
      .container {
        flex-direction: column;
      }

      .sidebar {
        position: fixed;
        height: 100%;
        top: 0;
        left: 0;
        z-index: 999;
        transform: translateX(0);
      }

      .sidebar.collapsed {
        transform: translateX(-100%);
      }

      .toggle-sidebar {
        left: 10px;
        top: 10px;
      }

      .toggle-sidebar.collapsed {
        left: 10px;
      }
    }


  .highlight-yellow { background-color: #fff89e; }
  .highlight-green { background-color: #b8f9b8; }
  .highlight-blue  { background-color: #b8d8ff; }
  .highlight-pink  { background-color: #ffc4e1; }
  .highlight-orange { background-color: #ffe2b7; }

  #color-picker {
    display: none;
    position: absolute;
    z-index: 9999;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    padding: 6px 10px;
  }

  #color-picker button {
    width: 22px;
    height: 22px;
    border: none;
    margin: 4px;
    cursor: pointer;
    border-radius: 50%;
  }

  #color-picker .yellow  { background-color: #fff89e; }
  #color-picker .green   { background-color: #b8f9b8; }
  #color-picker .blue    { background-color: #b8d8ff; }
  #color-picker .pink    { background-color: #ffc4e1; }
  #color-picker .orange  { background-color: #ffe2b7; }