:root {
  --canvas-bg: rgba(11, 18, 32, 0.25);
  --canvas-particle: rgba(164, 177, 199, 0.3);
  --canvas-connection: rgba(59, 130, 246, 0.15);
  --canvas-node-blue: rgba(59, 130, 246, 0.5);
  --canvas-node-cyan: rgba(34, 211, 238, 0.5);
  --canvas-node-purple: rgba(168, 85, 247, 0.5);
  --canvas-node-glow-blue: rgba(59, 130, 246, 0.08);
  --canvas-node-glow-cyan: rgba(34, 211, 238, 0.08);
  --canvas-node-glow-purple: rgba(168, 85, 247, 0.08);
  --canvas-binary: rgba(34, 211, 238, 0.4);
  --canvas-gradient-1: rgba(59, 130, 246, 0.03);
  --canvas-gradient-2: rgba(34, 211, 238, 0.03);
  --canvas-grid: rgba(59, 130, 246, 0.015);
}

body.light-theme {
  --canvas-bg: rgba(255, 255, 255, 0.5);
  --canvas-particle: rgba(71, 85, 105, 0.4);
  --canvas-connection: rgba(59, 130, 246, 0.25);
  --canvas-node-blue: rgba(59, 130, 246, 0.8);
  --canvas-node-cyan: rgba(6, 182, 212, 0.8);
  --canvas-node-purple: rgba(168, 85, 247, 0.8);
  --canvas-node-glow-blue: rgba(59, 130, 246, 0.2);
  --canvas-node-glow-cyan: rgba(6, 182, 212, 0.2);
  --canvas-node-glow-purple: rgba(168, 85, 247, 0.2);
  --canvas-binary: rgba(6, 182, 212, 0.5);
  --canvas-gradient-1: rgba(59, 130, 246, 0.08);
  --canvas-gradient-2: rgba(6, 182, 212, 0.08);
  --canvas-grid: rgba(59, 130, 246, 0.05);
}

.page {
  position: relative;
}

#hero-background-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

.section {
  position: relative;
  z-index: 1;
}

.container {
  position: relative;
  z-index: 2;
}

.page::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at 30% 20%, 
    var(--canvas-gradient-1) 0%, 
    transparent 50%
  ),
  radial-gradient(
    circle at 70% 80%, 
    var(--canvas-gradient-2) 0%, 
    transparent 50%
  );
  z-index: -3;
  pointer-events: none;
}

.page::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(90deg, transparent 0%, var(--canvas-grid) 50%, transparent 100%),
    linear-gradient(0deg, transparent 0%, var(--canvas-grid) 50%, transparent 100%);
  background-size: 120px 120px, 120px 120px;
  animation: grid-flow 25s linear infinite;
  z-index: -1;
  pointer-events: none;
  opacity: 0.2;
}

@keyframes grid-flow {
  0% {
    background-position: 0 0, 0 0;
  }
  100% {
    background-position: 100px 100px, -100px -100px;
  }
}

@media (max-width: 768px) {
  #hero-background-canvas {
    opacity: 0.7;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page::after {
    animation: none;
  }
  
  #hero-background-canvas {
    opacity: 0.5;
  }
}