/* ==========================================================================
   Animations — all keyframes in one place
   ========================================================================== */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes maze-drift {
  from {
    background-position-y: 0;
  }
  to {
    background-position-y: calc(var(--maze-bg-w) * var(--maze-tile-ratio));
  }
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.55;
  }
  70%,
  100% {
    transform: scale(1.7);
    opacity: 0;
  }
}

@keyframes shake {
  20%,
  60% {
    transform: translateX(-5px);
  }
  40%,
  80% {
    transform: translateX(5px);
  }
}

/* Background network drift */
@keyframes net-float {
  from {
    transform: translate(0, 0);
    opacity: 0.55;
  }
  to {
    transform: translate(var(--dx, 3px), var(--dy, -4px));
    opacity: 1;
  }
}

/* Diagram nodes */
@keyframes node-pop {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  100% {
    transform: scale(2.1);
    opacity: 0;
  }
}

@keyframes node-bump {
  0% {
    transform: scale(0.88);
  }
  60% {
    transform: scale(1.06);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes ripple {
  0% {
    transform: scale(1);
    opacity: 0.55;
  }
  100% {
    transform: scale(2.6);
    opacity: 0;
  }
}

@keyframes halo-breathe {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

@keyframes dot-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.35);
  }
}

/* Reduced motion — only applied when js/config.js has respectReducedMotion: true
   AND the visitor's system asks for it (js adds the .reduce-motion class). */
.reduce-motion *,
.reduce-motion *::before,
.reduce-motion *::after {
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001ms !important;
  scroll-behavior: auto !important;
}

.reduce-motion .maze {
  animation: none;
}