/* ============================================
   Animation Styles
   ============================================ */

/* Gradient Text Shimmer */
.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
  display: inline-block;
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Hero Animations */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--spacing-2xl) 0;
}

#particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 0 var(--spacing-md);
  animation: fadeInUp 1s ease-out;
}

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

.hero-title {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.8s both, bounce 2s ease-in-out infinite 1.8s;
}

.hero-scroll-indicator span {
  display: block;
  margin-bottom: var(--spacing-xs);
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  margin: 0 auto;
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0%, 100% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(10px);
    opacity: 0.5;
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

/* Scroll Reveal Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger Animation Delays */
.processor-card:nth-child(1) {
  transition-delay: 0.1s;
}

.processor-card:nth-child(2) {
  transition-delay: 0.2s;
}

.processor-card:nth-child(3) {
  transition-delay: 0.3s;
}

.processor-card:nth-child(4) {
  transition-delay: 0.4s;
}

.processor-card:nth-child(5) {
  transition-delay: 0.5s;
}

.processor-card:nth-child(6) {
  transition-delay: 0.6s;
}

/* Card Hover Glow */
.processor-card {
  position: relative;
}

.processor-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-lg);
  opacity: 0;
  background: radial-gradient(circle at center, var(--glow) 0%, transparent 70%);
  transition: opacity var(--transition-base);
  pointer-events: none;
  z-index: -1;
}

.processor-card:hover::after {
  opacity: 1;
}

/* Smooth Transitions */
* {
  transition-property: transform, opacity, color, background-color, border-color;
  transition-duration: var(--transition-base);
  transition-timing-function: ease;
}

/* GPU Acceleration */
.processor-card,
.btn,
.industry-card {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Content Section Animations */
.content-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.content-section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Table of Contents Active State */
.toc-nav a {
  position: relative;
  padding-left: var(--spacing-md);
  transition: all var(--transition-base);
}

.toc-nav a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--accent-primary);
  transition: height var(--transition-base);
}

.toc-nav a.active {
  color: var(--accent-primary);
}

.toc-nav a.active::before {
  height: 100%;
}

/* Comparison Card Flip */
.comparison-card {
  perspective: 1000px;
}

.comparison-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.comparison-card.flipped .comparison-card-inner {
  transform: rotateY(180deg);
}

.comparison-card-front,
.comparison-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.comparison-card-back {
  transform: rotateY(180deg);
}

/* Pulse Animation for CTAs */
@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 20px var(--glow);
  }
  50% {
    box-shadow: 0 0 40px var(--glow), 0 0 60px var(--glow);
  }
}

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

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
}

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