.menu {
      max-width: 400px;
      margin: 0 auto;
      background: white;
      border-radius: 10px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
      overflow: hidden;
    }

    .menu-header {
      user-select: none;
      font-weight: bold;
    }

    .menu-header:hover {
      background: #005fa3;
    }

    .menu-content {
      display: none;
    }

    .menu-content ul {
      margin: 0;
      padding-left: 20px;
    }

    .menu-content li {
      margin: 5px 0;
    }

    /* Open section styling */
    .menu-header.active {
      background: #005fa3;
    }

    .menu-header.active + .menu-content {
      display: block;
      animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
      from { opacity: 0; transform: translateY(-5px); }
      to { opacity: 1; transform: translateY(0); }
    }