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

/* Keyframe Animations */

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

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

@keyframes slideInBlur {
  from {
    opacity: 0;
    transform: translateY(40px);
    filter: blur(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(99, 102, 241, 0.5);
  }
  50% {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.8);
  }
}

/* =======================
   Animation Classes
   ======================= */

.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

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

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

.slide-in-left {
  animation: slideInFromLeft 0.6s ease-out forwards;
}

.slide-in-right {
  animation: slideInFromRight 0.6s ease-out forwards;
}

.slide-in-blur {
  animation: slideInBlur 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.scale-in {
  animation: scaleIn 0.6s ease-out forwards;
}

/* =======================
   Page Load Animations
   ======================= */

/* Elements start hidden for animation */
.animate-on-load {
  opacity: 0;
}

/* Hero section animations (home page) */
.hero-animate .hero-title {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.1s;
}

.hero-animate .hero-subtitle {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.3s;
}

.hero-animate .hero-tagline {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.4s;
}

.hero-animate .hero-description {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.5s;
}

.hero-animate .hero-cta {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.7s;
}

/* Post hero animations */
.post-hero-animate .post-hero-overlay {
  animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.post-hero-animate .post-hero-date {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.2s;
}

.post-hero-animate .post-hero-categories {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.3s;
}

.post-hero-animate .post-hero-title {
  animation: slideInBlur 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.4s;
}

.post-hero-animate .post-hero-subtitle {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.6s;
}

.post-hero-animate .post-hero-reading-time {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.7s;
}

/* Post header animations (for posts without hero image) */
.post-header-animate .post-date {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.1s;
}

.post-header-animate .post-categories {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.2s;
}

.post-header-animate .post-title {
  animation: slideInBlur 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.3s;
}

.post-header-animate .post-subtitle {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.5s;
}

.post-header-animate .post-meta {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: 0.6s;
}

/* Navigation animations */
.nav-animate {
  animation: fadeInDown 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Content animations */
.content-animate {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Card animations */
.card-animate {
  animation: slideInBlur 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* =======================
   Staggered Animation Delays
   ======================= */

.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.2s;
}

.delay-3 {
  animation-delay: 0.3s;
}

.delay-4 {
  animation-delay: 0.4s;
}

.delay-5 {
  animation-delay: 0.5s;
}

.delay-6 {
  animation-delay: 0.6s;
}

.delay-7 {
  animation-delay: 0.7s;
}

.delay-8 {
  animation-delay: 0.8s;
}

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

.hover-lift {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
  transform: translateY(-5px);
}

.hover-scale {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.hover-glow {
  transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
}

/* =======================
   Smooth Scroll
   ======================= */

.smooth-scroll {
  scroll-behavior: smooth;
}

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

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

.gpu-accelerate {
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* =======================
   Loading States
   ======================= */

.loading-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* =======================
   Text Animations
   ======================= */

.text-shimmer {
  background: linear-gradient(
    90deg,
    var(--text-secondary) 0%,
    var(--text-primary) 50%,
    var(--text-secondary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  to {
    background-position: 200% center;
  }
}

/* =======================
   Accessibility
   ======================= */

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

  .loading-pulse,
  .text-shimmer {
    animation: none !important;
  }
}

/* Focus visible styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* =======================
   Print Styles
   ======================= */

@media print {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}