/**
 * ==================================================
 * CSS Animations - Ultra Smooth & GPU Accelerated
 * 60fps Animations with Balanced CPU Usage
 * ==================================================
 */

/* ================================
   GPU Acceleration Base
   ================================ */
.gpu-accelerated {
  will-change: transform, opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}

/* ================================
   Fade Animations
   ================================ */

/* Fade In */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn var(--transition-normal) ease forwards;
}

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 40px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Fade In Down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-down {
  animation: fadeInDown 0.6s ease forwards;
}

/* Fade In Left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

/* Fade In Right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

/* Scale In */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.scale-in {
  animation: scaleIn 0.4s ease forwards;
}

/* Pulse */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Bounce */
@keyframes bounce {
  0%,
  20%,
  53%,
  80%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  40%,
  43% {
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

.bounce {
  animation: bounce 1s ease infinite;
}

/* Shake */
@keyframes shake {
  10%,
  90% {
    transform: translate3d(-1px, 0, 0);
  }
  20%,
  80% {
    transform: translate3d(2px, 0, 0);
  }
  30%,
  50%,
  70% {
    transform: translate3d(-4px, 0, 0);
  }
  40%,
  60% {
    transform: translate3d(4px, 0, 0);
  }
}

.shake {
  animation: shake 0.82s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

/* Float */
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.float {
  animation: float 3s ease-in-out infinite;
}

/* Glow Pulse */
@keyframes glowPulse {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.4);
  }
  50% {
    box-shadow: 0 0 40px rgba(var(--color-primary-rgb), 0.6);
  }
}

.glow-pulse {
  animation: glowPulse 2s ease-in-out infinite;
}

/* Rotate */
@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.rotate {
  animation: rotate 2s linear infinite;
}

/* Gradient Shift */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-shift {
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

/* Shimmer */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    var(--color-surface) 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* Text Reveal */
@keyframes textReveal {
  0% {
    clip-path: inset(0 100% 0 0);
  }
  100% {
    clip-path: inset(0 0 0 0);
  }
}

.text-reveal {
  animation: textReveal 1s ease forwards;
}

/* Border Glow */
@keyframes borderGlow {
  0%,
  100% {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.3);
  }
  50% {
    border-color: var(--color-secondary);
    box-shadow: 0 0 20px rgba(var(--color-secondary-rgb), 0.5);
  }
}

.border-glow {
  animation: borderGlow 2s ease-in-out infinite;
}

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

/* Scroll Triggered Animations - Enhanced */
[data-animate] {
  opacity: 0;
  will-change: transform, opacity;
}

[data-animate].animated {
  opacity: 1;
}

[data-animate="fade-up"] {
  transform: translateY(60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-up"].animated {
  transform: translateY(0);
}

[data-animate="fade-down"] {
  transform: translateY(-60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-down"].animated {
  transform: translateY(0);
}

[data-animate="fade-left"] {
  transform: translateX(60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-left"].animated {
  transform: translateX(0);
}

[data-animate="fade-right"] {
  transform: translateX(-60px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="fade-right"].animated {
  transform: translateX(0);
}

[data-animate="scale"] {
  transform: scale(0.85);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-animate="scale"].animated {
  transform: scale(1);
}

[data-animate="zoom-in"] {
  transform: scale(0.9);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-animate="zoom-in"].animated {
  transform: scale(1);
}

[data-animate="flip-up"] {
  transform: perspective(1000px) rotateX(10deg) translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

[data-animate="flip-up"].animated {
  transform: perspective(1000px) rotateX(0) translateY(0);
}

[data-animate="blur-in"] {
  filter: blur(10px);
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out,
    filter 0.8s ease-out;
}

[data-animate="blur-in"].animated {
  filter: blur(0);
  transform: translateY(0);
}

/* Stagger delays for grid items */
[data-animate-delay="1"] {
  transition-delay: 0.1s;
}
[data-animate-delay="2"] {
  transition-delay: 0.2s;
}
[data-animate-delay="3"] {
  transition-delay: 0.3s;
}
[data-animate-delay="4"] {
  transition-delay: 0.4s;
}
[data-animate-delay="5"] {
  transition-delay: 0.5s;
}
[data-animate-delay="6"] {
  transition-delay: 0.6s;
}
[data-animate-delay="7"] {
  transition-delay: 0.7s;
}
[data-animate-delay="8"] {
  transition-delay: 0.8s;
}
[data-animate-delay="9"] {
  transition-delay: 0.9s;
}
[data-animate-delay="10"] {
  transition-delay: 1s;
}

/* ================================
   Advanced Scroll Animations
   ================================ */

/* Reveal from bottom with elastic effect */
[data-animate="reveal-up"] {
  opacity: 0;
  transform: translate3d(0, 80px, 0);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate="reveal-up"].animated {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Reveal with 3D rotate */
[data-animate="reveal-rotate"] {
  opacity: 0;
  transform: perspective(800px) rotateY(-15deg) translateX(-30px);
  transition: opacity 0.8s ease-out,
    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-animate="reveal-rotate"].animated {
  opacity: 1;
  transform: perspective(800px) rotateY(0) translateX(0);
}

/* Smooth slide with fade */
[data-animate="slide-fade"] {
  opacity: 0;
  transform: translate3d(-50px, 20px, 0);
  transition: opacity 0.7s ease,
    transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-animate="slide-fade"].animated {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Parallax effect (handled by JS) */
.parallax {
  will-change: transform;
  transition: transform 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ================================
   Smooth Hover Effects
   ================================ */

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

.hover-lift:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.hover-scale {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Hover glow effect */
.hover-glow {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-glow:hover {
  box-shadow: 0 0 30px rgba(var(--color-primary-rgb), 0.5),
    0 0 60px rgba(var(--color-primary-rgb), 0.3);
}

/* Magnetic hover effect (for buttons) */
.magnetic-hover {
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ================================
   Loading Animations
   ================================ */

/* Skeleton loading */
.skeleton-loading {
  background: linear-gradient(
    90deg,
    var(--color-surface) 0%,
    var(--color-surface-hover) 50%,
    var(--color-surface) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite ease-in-out;
}

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

/* Content placeholder animation */
.content-loading {
  opacity: 0;
  animation: content-appear 0.6s ease forwards;
  animation-delay: 0.3s;
}

@keyframes content-appear {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================
   Scroll Progress Indicator
   ================================ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 9999;
  transition: transform 0.1s linear;
}

/* ================================
   Entrance Animations (on page load)
   ================================ */

.entrance-fade {
  opacity: 0;
  animation: entranceFade 0.8s ease forwards;
}

.entrance-slide-up {
  opacity: 0;
  transform: translateY(40px);
  animation: entranceSlideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.entrance-slide-down {
  opacity: 0;
  transform: translateY(-40px);
  animation: entranceSlideDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes entranceFade {
  to {
    opacity: 1;
  }
}

@keyframes entranceSlideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes entranceSlideDown {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================
   Performance Optimizations
   ================================ */

/* Use will-change sparingly for performance */
.will-animate {
  will-change: transform, opacity;
}

/* Remove will-change after animation */
.animation-complete {
  will-change: auto;
}

/* ================================
   Reduced Motion Preferences
   ================================ */

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

  [data-animate],
  .parallax,
  .hover-lift,
  .hover-scale,
  .hover-glow {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
}