/**
 * ✨ BotEnSky Animations
 * Keyframes, utilities & micro-interactions
 */

/* ========================================
   🎬 KEYFRAME ANIMATIONS
   ======================================== */

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

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

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

/* Slide In Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

/* Bounce In */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

/* Pulse */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

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

/* Shimmer (for loading states) */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

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

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

/* ========================================
   🎯 UTILITY ANIMATION CLASSES
   ======================================== */

/* Fade In variants */
.animate-fade-in {
  animation: fadeIn var(--bes-duration-base) var(--bes-ease-out);
}

.animate-fade-in-up {
  animation: fadeInUp var(--bes-duration-slow) var(--bes-ease-bounce);
}

.animate-fade-in-down {
  animation: fadeInDown var(--bes-duration-slow) var(--bes-ease-bounce);
}

/* Slide variants */
.animate-slide-in-left {
  animation: slideInLeft var(--bes-duration-slow) var(--bes-ease-bounce);
}

.animate-slide-in-right {
  animation: slideInRight var(--bes-duration-slow) var(--bes-ease-bounce);
}

/* Scale In */
.animate-scale-in {
  animation: scaleIn var(--bes-duration-base) var(--bes-ease-out);
}

/* Bounce In */
.animate-bounce-in {
  animation: bounceIn var(--bes-duration-slower) var(--bes-ease-out);
}

/* Pulse */
.animate-pulse {
  animation: pulse 2s var(--bes-ease-in-out) infinite;
}

/* Rotate (loading spinner) */
.animate-rotate {
  animation: rotate 1s linear infinite;
}

/* Float */
.animate-float {
  animation: float 3s var(--bes-ease-in-out) infinite;
}

/* ========================================
   🌊 SCROLL ANIMATIONS (with JS)
   ======================================== */

/* Hidden state before animation */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--bes-duration-slow) var(--bes-ease-bounce),
              transform var(--bes-duration-slow) var(--bes-ease-bounce);
}

/* Visible state when in viewport */
.scroll-animate.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delay for multiple elements */
.scroll-animate-delay-1 { transition-delay: 100ms; }
.scroll-animate-delay-2 { transition-delay: 200ms; }
.scroll-animate-delay-3 { transition-delay: 300ms; }
.scroll-animate-delay-4 { transition-delay: 400ms; }
.scroll-animate-delay-5 { transition-delay: 500ms; }

/* ========================================
   💫 HOVER EFFECTS
   ======================================== */

/* Lift on Hover */
.hover-lift {
  transition: var(--bes-transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--bes-shadow-lg);
}

/* Grow on Hover */
.hover-grow {
  transition: var(--bes-transition-fast);
}

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

/* Glow on Hover */
.hover-glow {
  transition: var(--bes-transition-base);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(var(--bes-accent-rgb), 0.4);
}

/* Underline Slide In */
.hover-underline {
  position: relative;
  display: inline-block;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--bes-primary);
  transition: width var(--bes-duration-base) var(--bes-ease-out);
}

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

/* Shine Effect */
.hover-shine {
  position: relative;
  overflow: hidden;
}

.hover-shine::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left var(--bes-duration-slower) var(--bes-ease-out);
}

.hover-shine:hover::before {
  left: 100%;
}

/* ========================================
   🔄 LOADING STATES
   ======================================== */

/* Skeleton Loader */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bes-surface) 0%,
    rgba(var(--bes-primary-rgb), 0.1) 50%,
    var(--bes-surface) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--bes-radius-base);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--bes-space-2);
}

.skeleton-title {
  height: 2em;
  margin-bottom: var(--bes-space-4);
}

.skeleton-circle {
  border-radius: 50%;
  aspect-ratio: 1;
}

/* Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bes-border-light);
  border-top-color: var(--bes-primary);
  border-radius: 50%;
  animation: rotate 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

/* Dots Loader */
.dots-loader {
  display: inline-flex;
  gap: var(--bes-space-2);
}

.dots-loader span {
  width: 8px;
  height: 8px;
  background-color: var(--bes-primary);
  border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite;
}

.dots-loader span:nth-child(1) { animation-delay: 0s; }
.dots-loader span:nth-child(2) { animation-delay: 0.2s; }
.dots-loader span:nth-child(3) { animation-delay: 0.4s; }

/* ========================================
   🎨 GRADIENT ANIMATIONS
   ======================================== */

.gradient-animated {
  background: linear-gradient(
    270deg,
    var(--bes-primary),
    var(--bes-accent),
    var(--bes-secondary)
  );
  background-size: 600% 600%;
  animation: gradientShift 8s ease infinite;
}

/* ========================================
   🎪 ENTRANCE DELAYS (for stagger effect)
   ======================================== */

.entrance-delay-1 { animation-delay: 100ms; }
.entrance-delay-2 { animation-delay: 200ms; }
.entrance-delay-3 { animation-delay: 300ms; }
.entrance-delay-4 { animation-delay: 400ms; }
.entrance-delay-5 { animation-delay: 500ms; }
.entrance-delay-6 { animation-delay: 600ms; }

/* ========================================
   🌀 SPECIAL EFFECTS
   ======================================== */

/* Blur In */
@keyframes blurIn {
  from {
    filter: blur(10px);
    opacity: 0;
  }
  to {
    filter: blur(0);
    opacity: 1;
  }
}

.animate-blur-in {
  animation: blurIn var(--bes-duration-slower) var(--bes-ease-out);
}

/* Slide Down Fade In (for dropdowns) */
@keyframes slideDownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-dropdown {
  animation: slideDownFadeIn var(--bes-duration-base) var(--bes-ease-out);
  transform-origin: top;
}

/* Shake (for errors) */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.animate-shake {
  animation: shake 0.5s var(--bes-ease-in-out);
}

/* ========================================
   🎯 REDUCED MOTION (Accessibility)
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .scroll-animate {
    opacity: 1;
    transform: none;
  }
}