#menu {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: rgba(0, 0, 0, 0.7);
            padding: 10px;
            border-radius: 8px;
            z-index: 100;
            max-height: calc(100vh - 20px);
            overflow-y: auto;
            color: #765bff;
        }
        #menu h3 {
            margin-top: 0;
            color: #4CAF50; /* Green */
        }
        #menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        #menu li {
            margin-bottom: 5px;
        }
        #menu li strong {
            color: #FFC107; /* Amber */
        }
        #popup {
            position: absolute;
            background-color: rgba(0, 0, 0, 0.8);
            padding: 10px;
            border-radius: 8px;
            pointer-events: none; /* Allow clicks to pass through to the canvas */
            z-index: 50;
            display: none; /* Hidden by default */
            color: #765bff;
        }
        #popup h4 {
            margin-top: 0;
            margin-bottom: 5px;
            color: #2196F3; /* Blue */
        }
        #popup p {
            margin: 0;
            font-size: 0.9em;
        }

        /* New Context Menu Style */
        #context-menu {
            position: absolute;
            background-color: rgba(0, 0, 0, 0.9);
            padding: 10px;
            border-radius: 8px;
            z-index: 101; /* Above main menu and popup */
            display: none; /* Hidden by default */
            color: #765bff;
            cursor: pointer; /* Indicate clickable links */
        }
        #context-menu h4 {
             margin-top: 0;
             margin-bottom: 5px;
             color: #4CAF50; /* Green */
        }
         #context-menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        #context-menu li {
            margin-bottom: 5px;
        }
        #context-menu a {
            color: #00ccFF; /* White text for links */
            text-decoration: none; /* No underline */
        }
        #context-menu a:hover {
            text-decoration: underline;
        }