/* ============================================
   AI DATA SCIENTIST - ANIMATIONS
   ============================================ */

/* Reveal Animations - visible by default, hidden only when JS is ready */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-ready .reveal {
  opacity: 0;
  transform: translateY(40px);
}

.js-ready .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-ready .reveal-left {
  opacity: 0;
  transform: translateX(-60px);
}

.js-ready .reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-ready .reveal-right {
  opacity: 0;
  transform: translateX(60px);
}

.js-ready .reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.js-ready .reveal-scale {
  opacity: 0;
  transform: scale(0.9);
}

.js-ready .reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Blur Reveal */
.blur-reveal {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0);
  transition: opacity 1s ease, filter 1s ease, transform 1s ease;
}

.js-ready .blur-reveal {
  opacity: 0;
  filter: blur(10px);
  transform: translateY(30px);
}

.js-ready .blur-reveal.visible {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0);
}

/* Text Split Animation */
.split-text .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.split-text.visible .char {
  opacity: 1;
  transform: translateY(0);
}

/* Gradient Animation */
.gradient-animate {
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Glow Pulse */
.glow-pulse {
  animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px var(--glow-primary); }
  50% { box-shadow: 0 0 40px var(--glow-primary), 0 0 60px var(--glow-secondary); }
}

/* Neural Glow Border */
.neural-border {
  position: relative;
}

.neural-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--primary));
  background-size: 200% 200%;
  animation: borderRotate 4s linear infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.neural-border:hover::before {
  opacity: 1;
}

@keyframes borderRotate {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* Magnetic Button Effect */
.magnetic {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Tilt Effect */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.1s ease;
}

.tilt-card .tilt-content {
  transform: translateZ(40px);
}

/* Parallax Layers */
.parallax-slow {
  will-change: transform;
}

.parallax-fast {
  will-change: transform;
}

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  z-index: 10001;
  transform-origin: left;
  transform: scaleX(0);
}

/* Counter Animation */
.counter-value {
  font-variant-numeric: tabular-nums;
}

/* Icon Glow on Hover */
.icon-glow {
  transition: filter 0.4s ease, transform 0.4s ease;
}

.icon-glow:hover {
  filter: drop-shadow(0 0 10px var(--primary));
  transform: scale(1.1);
}

/* Line Draw Animation */
.line-draw {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawLine 2s ease forwards;
}

@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

/* Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.3);
  transform: scale(0);
  animation: rippleEffect 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Shimmer Effect */
.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Success Animation */
.success-check {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: checkDraw 0.5s ease forwards;
}

@keyframes checkDraw {
  to { stroke-dashoffset: 0; }
}

/* Page Transition */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  transform: scaleY(1);
  transform-origin: top;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.page-transition.exit {
  transform: scaleY(0);
  transform-origin: bottom;
}

/* Neural Signal Animation */
.neural-signal {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary), 0 0 20px var(--primary);
  animation: signalTravel 2s linear infinite;
}

@keyframes signalTravel {
  0% { opacity: 0; transform: scale(0); }
  20% { opacity: 1; transform: scale(1); }
  80% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0); }
}

/* Card 3D Tilt */
.card-3d {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.card-3d-inner {
  transition: transform 0.3s ease;
  transform-style: preserve-3d;
}

/* Floating Animation Variations */
.float-1 { animation: float1 6s ease-in-out infinite; }
.float-2 { animation: float2 7s ease-in-out infinite; }
.float-3 { animation: float3 5s ease-in-out infinite; }

@keyframes float1 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(-2deg); }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-25px) rotate(1deg); }
}

/* Hover Lift */
.hover-lift {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px var(--shadow-lg);
}

/* Underline Animation */
.animated-underline {
  position: relative;
  display: inline-block;
}

.animated-underline::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.animated-underline:hover::after {
  width: 100%;
}

/* Glass Reflection */
.glass-reflection {
  position: relative;
  overflow: hidden;
}

.glass-reflection::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 40%,
    rgba(255,255,255,0.03) 50%,
    transparent 60%
  );
  transform: rotate(45deg);
  transition: transform 0.6s ease;
  pointer-events: none;
}

.glass-reflection:hover::before {
  transform: rotate(45deg) translate(20%, 20%);
}

/* Smooth Page Load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js-ready .reveal,
  .js-ready .reveal-left,
  .js-ready .reveal-right,
  .js-ready .reveal-scale,
  .js-ready .blur-reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }
}