// Navigation Functions (continuation)
        function centerBlackHole() {
            cameraRotationX = 0;
            cameraRotationY = 0;
            cameraDistance = 200;
            console.log("🕳️ Centered on Nexus Core Black Hole");
        }
        
        function toggleAccretionDisk() {
            if (accretionDisk) {
                accretionDisk.visible = !accretionDisk.visible;
                console.log(`💫 Accretion disk ${accretionDisk.visible ? 'enabled' : 'disabled'}`);
            }
        }
        
        function showEventHorizon() {
            // Highlight black hole
            if (blackHole) {
                gsap.to(blackHole.material, {
                    opacity: blackHole.material.opacity === 0.8 ? 0.3 : 0.8,
                    duration: 1
                });
            }
            console.log("🌌 Event horizon visibility toggled");
        }
        
        function followSpiralArm(armName) {
            const armMap = { 'fusion': 0, 'proofs': 1, 'tools': 2, 'apex': 3 };
            const armIndex = armMap[armName];
            
            if (armIndex !== undefined) {
                cameraRotationY = (armIndex * Math.PI / 2) + galaxyRotation;
                cameraDistance = 300;
                console.log(`🌀 Following ${armName} spiral arm`);
            }
        }
        
        function jumpToStarSystem(systemId) {
            const system = starSystems.find(s => s.data.id.includes(systemId));
            if (system) {
                const starPos = system.star.position;
                cameraRotationY = Math.atan2(starPos.y, starPos.x);
                cameraDistance = 100;
                
                // Show knowledge scanner
                showKnowledgeScanner(system.data);
                console.log(`⭐ Jumped to ${system.data.name} star system`);
            }
        }
        
        function resetGalaxyView() {
            cameraRotationX = 0.3;
            cameraRotationY = 0;
            cameraDistance = 500;
            console.log("🌌 Reset to galaxy overview");
        }
        
        function updateZoom(value) {
            cameraDistance = 50 + (value * 200);
        }
        
        function toggleTimeControl() {
            timeScale = timeScale === 1.0 ? 0.0 : 1.0;
            const button = event.target;
            button.textContent = timeScale === 0 ? "▶️ Resume Orbit" : "⏸️ Pause Orbit";
            console.log(`⏰ Time scale: ${timeScale}`);
        }
        
        function toggleParticleTrails() {
            particleTrails = !particleTrails;
            console.log(`✨ Particle trails ${particleTrails ? 'enabled' : 'disabled'}`);
        }
        
        function showHyperspace() {
            // Quick camera movement effect
            gsap.to(camera.position, {
                x: camera.position.x * 0.1,
                y: camera.position.y * 0.1,
                z: camera.position.z * 0.1,
                duration: 0.5,
                yoyo: true,
                repeat: 1
            });
            console.log("🚀 Hyperspace jump effect");
        }
        
        function showKnowledgeScanner(systemData) {
            const scanner = document.getElementById('knowledge-scanner');
            const content = document.getElementById('scanner-content');
            
            content.innerHTML = `
                <h3>⭐ ${systemData.name}</h3>
                <p><strong>Stellar Classification:</strong> Knowledge Star</p>
                <p><strong>Mass:</strong> ${systemData.mass} Knowledge Units</p>
                <p><strong>Orbital Radius:</strong> ${systemData.position.r} parsecs</p>
                <p><strong>Harmonic Frequency:</strong> ${BASE_FREQ} Hz</p>
                
                <h4>🪐 Planetary System:</h4>
                <ul>
                    ${systemData.planets.map(planet => 
                        `<li><strong>${planet.name}</strong> - Distance: ${planet.distance} AU, Size: ${planet.size} km</li>`
                    ).join('')}
                </ul>
                
                <div class="metadata-grid">
                    <div>Spiral Arm: ${systemData.armIndex + 1}</div>
                    <div>System ID: ${systemData.id}</div>
                    <div>Discovery: Active</div>
                    <div>Status: Stable</div>
                </div>
            `;
            
            scanner.style.display = 'block';
        }
        
        function closeScanner() {
            document.getElementById('knowledge-scanner').style.display = 'none';
        }
        
        // Initialize on page load
        window.addEventListener('load', () => {
            initCosmicGalaxy();
            console.log("🌌 COSMIC KNOWLEDGE GALAXY ONLINE");
            console.log("🕳️ Nexus Core Black Hole: ψ₀ rotation active");
            console.log("🌀 Spiral Arms: φ-based curvature established");
            console.log("⭐ Stellar Systems: Gravitational physics engaged");
            console.log("✨ Particle Field: Knowledge transfer streams active");
        });
        
        // Handle window resize
        window.addEventListener('resize', () => {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(window.innerWidth, window.innerHeight);
        });
    </script>
</body>
</html>