Particle Effects Navigation Menu

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Orbitron', monospace;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.particle-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.menu-container {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 2;
}

.brand-logo {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.brand-text {
  font-size: 1.8rem;
  font-weight: 900;
  color: #ffffff;
  text-shadow: 
    0 0 10px rgba(120, 219, 255, 0.5),
    0 0 20px rgba(120, 219, 255, 0.3),
    0 0 30px rgba(120, 219, 255, 0.2);
  letter-spacing: 3px;
  position: relative;
  z-index: 3;
}

.logo-particles {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 40px;
  pointer-events: none;
}

.logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 60px;
  background: radial-gradient(ellipse, rgba(120, 219, 255, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: logo-pulse 3s ease-in-out infinite;
}

.menu-items {
  display: flex;
  list-style: none;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.menu-item {
  position: relative;
}

.menu-link {
  position: relative;
  display: block;
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 12px 20px;
  border-radius: 8px;
  transition: all 0.3s ease;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

.link-text {
  position: relative;
  z-index: 3;
  transition: all 0.3s ease;
}

.link-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.particle-trail {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #78dbff, transparent);
  transform: translateY(-50%);
  transition: width 0.4s ease;
}

.menu-link:hover {
  color: #78dbff;
  border-color: rgba(120, 219, 255, 0.5);
  box-shadow: 
    0 0 20px rgba(120, 219, 255, 0.3),
    inset 0 0 20px rgba(120, 219, 255, 0.1);
  transform: translateY(-2px);
}

.menu-link:hover .link-particles {
  opacity: 1;
}

.menu-link:hover .particle-trail {
  width: 100%;
}

.menu-link:hover .link-text {
  text-shadow: 
    0 0 10px rgba(120, 219, 255, 0.8),
    0 0 20px rgba(120, 219, 255, 0.4);
}

.particle-toggle {
  position: relative;
}

.toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 10px 20px;
  border-radius: 25px;
  cursor: pointer;
  font-family: 'Orbitron', monospace;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.toggle-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.toggle-text {
  position: relative;
  z-index: 2;
}

.toggle-btn:hover {
  background: rgba(120, 219, 255, 0.2);
  border-color: rgba(120, 219, 255, 0.5);
  box-shadow: 0 0 20px rgba(120, 219, 255, 0.3);
  transform: scale(1.05);
}

.toggle-btn.active {
  background: rgba(120, 219, 255, 0.3);
  border-color: #78dbff;
  color: #78dbff;
  box-shadow: 
    0 0 30px rgba(120, 219, 255, 0.5),
    inset 0 0 20px rgba(120, 219, 255, 0.2);
}

.ambient-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

@keyframes logo-pulse {
  0%, 100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

@keyframes particle-float {
  0% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

@keyframes particle-glow {
  0%, 100% {
    box-shadow: 0 0 5px currentColor;
  }
  50% {
    box-shadow: 0 0 20px currentColor, 0 0 30px currentColor;
  }
}

@media (max-width: 768px) {
  .menu-container {
    flex-direction: column;
    gap: 20px;
    padding: 20px;
  }
  
  .menu-items {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .menu-link {
    padding: 10px 15px;
    font-size: 0.9rem;
  }
  
  .brand-text {
    font-size: 1.5rem;
    letter-spacing: 2px;
  }
}

@media (max-width: 480px) {
  .menu-items {
    flex-direction: column;
    width: 100%;
  }
  
  .menu-link {
    text-align: center;
    width: 100%;
  }
  
  .particle-toggle {
    width: 100%;
  }
  
  .toggle-btn {
    width: 100%;
  }
}

document.addEventListener('DOMContentLoaded', function() {
  const canvas = document.getElementById('particleCanvas');
  const ctx = canvas.getContext('2d');
  const menuLinks = document.querySelectorAll('.menu-link');
  const toggleBtn = document.getElementById('particleToggle');
  const brandLogo = document.querySelector('.brand-logo');
  
  let particles = [];
  let animationId;
  let particlesEnabled = true;
  
  // Canvas setup
  function resizeCanvas() {
    canvas.width = window.innerWidth;
    canvas.height = document.querySelector('.particle-menu').offsetHeight;
  }
  
  resizeCanvas();
  window.addEventListener('resize', resizeCanvas);
  
  // Particle class
  class Particle {
    constructor(x, y, color = '#78dbff', size = 2) {
      this.x = x;
      this.y = y;
      this.vx = (Math.random() - 0.5) * 2;
      this.vy = (Math.random() - 0.5) * 2;
      this.size = size;
      this.color = color;
      this.life = 1;
      this.decay = Math.random() * 0.02 + 0.005;
      this.gravity = Math.random() * 0.1 + 0.05;
    }
    
    update() {
      this.x += this.vx;
      this.y += this.vy;
      this.vy += this.gravity;
      this.life -= this.decay;
      this.size *= 0.99;
    }
    
    draw() {
      ctx.save();
      ctx.globalAlpha = this.life;
      ctx.fillStyle = this.color;
      ctx.shadowBlur = 10;
      ctx.shadowColor = this.color;
      ctx.beginPath();
      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
      ctx.fill();
      ctx.restore();
    }
    
    isDead() {
      return this.life <= 0 || this.size <= 0.1;
    }
  }
  
  // Color schemes for different menu items
  const colorSchemes = {
    blue: ['#78dbff', '#4fc3f7', '#29b6f6'],
    purple: ['#ba68c8', '#ab47bc', '#9c27b0'],
    green: ['#66bb6a', '#4caf50', '#388e3c'],
    orange: ['#ff9800', '#f57c00', '#ef6c00'],
    red: ['#f44336', '#e53935', '#d32f2f']
  };
  
  // Create particles
  function createParticles(x, y, count = 5, colors = colorSchemes.blue) {
    if (!particlesEnabled) return;
    
    for (let i = 0; i < count; i++) {
      const color = colors[Math.floor(Math.random() * colors.length)];
      const size = Math.random() * 3 + 1;
      particles.push(new Particle(x, y, color, size));
    }
  }
  
  // Create trail particles
  function createTrailParticles(element, colors) {
    if (!particlesEnabled) return;
    
    const rect = element.getBoundingClientRect();
    const menuRect = document.querySelector('.particle-menu').getBoundingClientRect();
    
    const x = rect.left + rect.width / 2;
    const y = rect.top - menuRect.top + rect.height / 2;
    
    createParticles(x, y, 3, colors);
  }
  
  // Animation loop
  function animate() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    
    // Update and draw particles
    for (let i = particles.length - 1; i >= 0; i--) {
      const particle = particles[i];
      particle.update();
      particle.draw();
      
      if (particle.isDead()) {
        particles.splice(i, 1);
      }
    }
    
    animationId = requestAnimationFrame(animate);
  }
  
  // Start animation
  animate();
  
  // Menu link interactions
  menuLinks.forEach(link => {
    const particleType = link.getAttribute('data-particles');
    const colors = colorSchemes[particleType] || colorSchemes.blue;
    
    link.addEventListener('mouseenter', function() {
      createTrailParticles(this, colors);
      
      // Create continuous particles while hovering
      this.particleInterval = setInterval(() => {
        createTrailParticles(this, colors);
      }, 100);
    });
    
    link.addEventListener('mouseleave', function() {
      if (this.particleInterval) {
        clearInterval(this.particleInterval);
      }
    });
    
    link.addEventListener('click', function(e) {
      e.preventDefault();
      
      // Create explosion effect
      const rect = this.getBoundingClientRect();
      const menuRect = document.querySelector('.particle-menu').getBoundingClientRect();
      
      const x = rect.left + rect.width / 2;
      const y = rect.top - menuRect.top + rect.height / 2;
      
      createParticles(x, y, 20, colors);
      
      // Add screen shake effect
      document.body.style.animation = 'shake 0.3s ease-in-out';
      setTimeout(() => {
        document.body.style.animation = '';
      }, 300);
    });
  });
  
  // Brand logo interaction
  brandLogo.addEventListener('click', function() {
    const rect = this.getBoundingClientRect();
    const menuRect = document.querySelector('.particle-menu').getBoundingClientRect();
    
    const x = rect.left + rect.width / 2;
    const y = rect.top - menuRect.top + rect.height / 2;
    
    // Create rainbow explosion
    const rainbowColors = ['#ff0000', '#ff7f00', '#ffff00', '#00ff00', '#0000ff', '#4b0082', '#9400d3'];
    
    for (let i = 0; i < 30; i++) {
      const color = rainbowColors[Math.floor(Math.random() * rainbowColors.length)];
      particles.push(new Particle(x, y, color, Math.random() * 4 + 2));
    }
  });
  
  // Toggle button functionality
  toggleBtn.addEventListener('click', function() {
    particlesEnabled = !particlesEnabled;
    this.classList.toggle('active');
    
    if (particlesEnabled) {
      this.querySelector('.toggle-text').textContent = 'Effects';
      animate();
    } else {
      this.querySelector('.toggle-text').textContent = 'Disabled';
      particles = [];
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      if (animationId) {
        cancelAnimationFrame(animationId);
      }
    }
  });
  
  // Ambient particles
  function createAmbientParticles() {
    if (!particlesEnabled) return;
    
    const x = Math.random() * canvas.width;
    const y = canvas.height;
    const colors = ['#78dbff', '#ba68c8', '#66bb6a', '#ff9800'];
    const color = colors[Math.floor(Math.random() * colors.length)];
    
    particles.push(new Particle(x, y, color, Math.random() * 2 + 0.5));
  }
  
  // Create ambient particles periodically
  setInterval(createAmbientParticles, 500);
  
  // Mouse trail effect
  let mouseTrailTimeout;
  document.addEventListener('mousemove', function(e) {
    if (!particlesEnabled) return;
    
    const menuRect = document.querySelector('.particle-menu').getBoundingClientRect();
    
    if (e.clientY >= menuRect.top && e.clientY <= menuRect.bottom) {
      clearTimeout(mouseTrailTimeout);
      mouseTrailTimeout = setTimeout(() => {
        const x = e.clientX;
        const y = e.clientY - menuRect.top;
        
        if (Math.random() < 0.3) {
          particles.push(new Particle(x, y, '#ffffff', 1));
        }
      }, 50);
    }
  });
  
  // Add CSS for shake animation
  const style = document.createElement('style');
  style.textContent = `
    @keyframes shake {
      0%, 100% { transform: translateX(0); }
      25% { transform: translateX(-2px); }
      75% { transform: translateX(2px); }
    }
  `;
  document.head.appendChild(style);
  
  // Performance optimization
  let lastTime = 0;
  const targetFPS = 60;
  const frameInterval = 1000 / targetFPS;
  
  function optimizedAnimate(currentTime) {
    if (currentTime - lastTime >= frameInterval) {
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      
      // Limit particle count for performance
      if (particles.length > 200) {
        particles = particles.slice(-150);
      }
      
      // Update and draw particles
      for (let i = particles.length - 1; i >= 0; i--) {
        const particle = particles[i];
        particle.update();
        particle.draw();
        
        if (particle.isDead()) {
          particles.splice(i, 1);
        }
      }
      
      lastTime = currentTime;
    }
    
    if (particlesEnabled) {
      animationId = requestAnimationFrame(optimizedAnimate);
    }
  }
  
  // Replace the original animate function with optimized version
  if (animationId) {
    cancelAnimationFrame(animationId);
  }
  optimizedAnimate(0);
});