/* ===================================================
   High-Performance Smooth Scroll & UI Animations
   Sathya's Scientific
   =================================================== */

/* Keyframe Definitions */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 28px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translate3d(0, -24px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translate3d(-30px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translate3d(30px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale3d(0.92, 0.92, 1);
  }
  to {
    opacity: 1;
    transform: scale3d(1, 1, 1);
  }
}

@keyframes floatGentle {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.4);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(2, 132, 199, 0);
  }
}

@keyframes shimmerEffect {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* ===================================================
   Scroll Reveal Base States
   =================================================== */
.reveal,
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale,
.stagger-item {
  opacity: 0;
  will-change: opacity, transform;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-up,
.stagger-item {
  transform: translate3d(0, 28px, 0);
}

.reveal-left {
  transform: translate3d(-35px, 0, 0);
}

.reveal-right {
  transform: translate3d(35px, 0, 0);
}

.reveal-scale {
  transform: scale3d(0.93, 0.93, 1);
}

/* ===================================================
   Active Revealed State
   =================================================== */
.reveal.is-revealed,
.reveal-up.is-revealed,
.reveal-left.is-revealed,
.reveal-right.is-revealed,
.reveal-scale.is-revealed,
.stagger-item.is-revealed,
.stagger-group.is-revealed .stagger-item {
  opacity: 1 !important;
  transform: translate3d(0, 0, 0) scale3d(1, 1, 1) !important;
}

/* Stagger Delays for Rapid Cascade Entrance */
.stagger-group.is-revealed .stagger-item:nth-child(1) { transition-delay: 0.04s; }
.stagger-group.is-revealed .stagger-item:nth-child(2) { transition-delay: 0.08s; }
.stagger-group.is-revealed .stagger-item:nth-child(3) { transition-delay: 0.12s; }
.stagger-group.is-revealed .stagger-item:nth-child(4) { transition-delay: 0.16s; }
.stagger-group.is-revealed .stagger-item:nth-child(5) { transition-delay: 0.20s; }
.stagger-group.is-revealed .stagger-item:nth-child(6) { transition-delay: 0.24s; }
.stagger-group.is-revealed .stagger-item:nth-child(7) { transition-delay: 0.28s; }
.stagger-group.is-revealed .stagger-item:nth-child(8) { transition-delay: 0.32s; }
.stagger-group.is-revealed .stagger-item:nth-child(9) { transition-delay: 0.36s; }
.stagger-group.is-revealed .stagger-item:nth-child(10) { transition-delay: 0.40s; }
.stagger-group.is-revealed .stagger-item:nth-child(11) { transition-delay: 0.44s; }
.stagger-group.is-revealed .stagger-item:nth-child(12) { transition-delay: 0.48s; }

/* Utilities & Micro-Interactions */
.animate-float {
  animation: floatGentle 4.5s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 2.5s infinite;
}

/* Smooth Interactive Card Hovers */
.interactive-hover-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease;
}

.interactive-hover-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.12), 0 0 1px 1px rgba(2, 132, 199, 0.2);
}

/* Reduced motion support for accessibility */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-up,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .stagger-item,
  .stagger-group .stagger-item {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .animate-float,
  .animate-pulse-glow {
    animation: none !important;
  }
}