/* ========== Keyframes ========== */

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  0% {
    opacity: 0;
    transform: translateX(-30px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  0% {
    opacity: 0;
    transform: translateX(30px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes shimmer {
  0% {
    background-position: -400px 0;
  }
  100% {
    background-position: 400px 0;
  }
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.3;
  }
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
}

@keyframes circuit-flow {
  0% {
    stroke-dashoffset: 1000;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes counter-up {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes slide-up {
  0% {
    opacity: 0;
    transform: translateY(100%);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Scroll-triggered animation classes ========== */

.animate-on-scroll {
  opacity: 0;
  will-change: opacity, transform;
}

.animate-on-scroll.visible {
  opacity: 1;
}

/* Default: fadeInUp on visibility */
.animate-on-scroll.visible {
  animation: fadeInUp 0.6s var(--transition-base) forwards;
}

/* Direction variants — attach data attributes in markup */
.animate-on-scroll[data-animate="fadeInLeft"].visible {
  animation: fadeInLeft 0.6s var(--transition-base) forwards;
}

.animate-on-scroll[data-animate="fadeInRight"].visible {
  animation: fadeInRight 0.6s var(--transition-base) forwards;
}

/* ========== Staggered delays ========== */

.stagger-1 { animation-delay: 100ms; }
.stagger-2 { animation-delay: 200ms; }
.stagger-3 { animation-delay: 300ms; }
.stagger-4 { animation-delay: 400ms; }
.stagger-5 { animation-delay: 500ms; }

/* ========== Reduced motion ========== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-on-scroll {
    opacity: 1;
  }
}