.machine-group {
  animation: machineAppear 1.5s ease-out 0.3s both;
}

.sun-gear {
  transform-origin: 0 0;
  animation: sunRotate 20s linear infinite;
}

.planet-group {
  animation: planetOrbit 12s linear infinite;
  transform-origin: 0 0;
}

.planet-1 {
  animation: planetSelfRotate 4s linear infinite;
  transform-origin: 0px -120px;
}

.planet-2 {
  animation: planetSelfRotate 4s linear infinite;
  transform-origin: 104px 60px;
}

.planet-3 {
  animation: planetSelfRotate 4s linear infinite;
  transform-origin: -104px 60px;
}

.upper-plate {
  animation: upperPlateRotate 16s linear infinite reverse;
  transform-origin: 0 0;
  opacity: 0.6;
}

.ring-gear {
  animation: ringPulse 8s ease-in-out infinite;
}

.orbit-lines circle:first-child {
  animation: orbitDash 3s linear infinite;
}

.orbit-lines circle:last-child {
  animation: orbitDash 5s linear infinite reverse;
}

/* particles */
#particles circle {
  animation: particleFloat 6s ease-in-out infinite;
}

#particles circle:nth-child(odd) {
  animation-delay: -3s;
}

@keyframes machineAppear {
  from {
    opacity: 0;
    transform: translate(400px, 400px) scale(0.75);
  }
  to {
    opacity: 1;
    transform: translate(400px, 400px) scale(1);
  }
}

@keyframes sunRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes planetOrbit {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes planetSelfRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

@keyframes upperPlateRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes ringPulse {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.45; }
}

@keyframes orbitDash {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: 48; }
}

@keyframes particleFloat {
  0%, 100% { opacity: 0.2; transform: translateY(0); }
  50% { opacity: 0.5; transform: translateY(-6px); }
}

@media (max-width: 768px) {
  .sun-gear { animation-duration: 30s; }
  .planet-group { animation-duration: 18s; }
  .planet-1, .planet-2, .planet-3 { animation-duration: 6s; }
  .upper-plate { animation-duration: 24s; }
}

@media (prefers-reduced-motion: reduce) {
  .sun-gear,
  .planet-group,
  .planet-1,
  .planet-2,
  .planet-3,
  .upper-plate,
  .ring-gear,
  .orbit-lines circle,
  #particles circle {
    animation: none;
  }

  .machine-group {
    animation: none;
    opacity: 1;
  }
}