/**
 * KCA Reservation System - Animation Library
 * Theme: Refined Elegance - Premium Minimal Light
 *
 * A comprehensive animation system with spring physics,
 * staggered reveals, and scroll-triggered effects.
 */

/* ═══════════════════════════════════════════════════════════
   FADE ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

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

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

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

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

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

/* ═══════════════════════════════════════════════════════════
   SLIDE ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

@keyframes slideInUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideInDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutUp {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(-100%);
    opacity: 0;
  }
}

@keyframes slideOutDown {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(100%);
    opacity: 0;
  }
}

/* ═══════════════════════════════════════════════════════════
   SCALE ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

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

@keyframes scaleInBounce {
  0% {
    opacity: 0;
    transform: scale(0);
  }
  60% {
    opacity: 1;
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

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

@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ═══════════════════════════════════════════════════════════
   CONTINUOUS ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

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

@keyframes pulseSoft {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
    animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
  }
  50% {
    transform: translateY(-25%);
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes ping {
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-10px) rotate(2deg);
  }
  50% {
    transform: translateY(5px) rotate(-1deg);
  }
  75% {
    transform: translateY(-5px) rotate(1deg);
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(212, 175, 55, 0.5);
  }
}

@keyframes glowAccent {
  0%, 100% {
    box-shadow: 0 0 20px rgba(30, 58, 95, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(30, 58, 95, 0.5);
  }
}

/* ═══════════════════════════════════════════════════════════
   SPECIAL EFFECTS
   ═══════════════════════════════════════════════════════════ */

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

/* Ripple Effect Element (used by RippleEffect class in animations.js) */
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s ease-out forwards;
  pointer-events: none;
}

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

@keyframes wiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-5deg);
  }
  75% {
    transform: rotate(5deg);
  }
}

@keyframes heartbeat {
  0%, 100% {
    transform: scale(1);
  }
  14% {
    transform: scale(1.1);
  }
  28% {
    transform: scale(1);
  }
  42% {
    transform: scale(1.1);
  }
  70% {
    transform: scale(1);
  }
}

/* ═══════════════════════════════════════════════════════════
   SUCCESS / CELEBRATION
   ═══════════════════════════════════════════════════════════ */

@keyframes checkmarkDraw {
  0% {
    stroke-dashoffset: 100;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes celebrateCircle {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

@keyframes confettiFall {
  0% {
    transform: translateY(-100vh) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

@keyframes successPop {
  0% {
    transform: scale(0) rotate(-45deg);
    opacity: 0;
  }
  50% {
    transform: scale(1.2) rotate(10deg);
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

/* ═══════════════════════════════════════════════════════════
   LOADING ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

@keyframes loadingDots {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes loadingBar {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes loadingPulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

@keyframes spinnerGrow {
  0% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(180deg) scale(1.1);
  }
  100% {
    transform: rotate(360deg) scale(1);
  }
}

/* ═══════════════════════════════════════════════════════════
   COUNTER ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

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

@keyframes numberFlip {
  0% {
    transform: rotateX(-90deg);
    opacity: 0;
  }
  100% {
    transform: rotateX(0);
    opacity: 1;
  }
}

/* ═══════════════════════════════════════════════════════════
   ANIMATION UTILITY CLASSES
   ═══════════════════════════════════════════════════════════ */

/* Fade Animations */
.animate-fade-in {
  animation: fadeIn var(--duration-normal) var(--ease-out) forwards;
}

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

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

.animate-fade-in-left {
  animation: fadeInLeft var(--duration-slow) var(--ease-out) forwards;
}

.animate-fade-in-right {
  animation: fadeInRight var(--duration-slow) var(--ease-out) forwards;
}

.animate-fade-in-scale {
  animation: fadeInScale var(--duration-slow) var(--ease-spring) forwards;
}

/* Slide Animations */
.animate-slide-in-up {
  animation: slideInUp var(--duration-slow) var(--ease-out) forwards;
}

.animate-slide-in-down {
  animation: slideInDown var(--duration-slow) var(--ease-out) forwards;
}

.animate-slide-in-left {
  animation: slideInLeft var(--duration-slow) var(--ease-out) forwards;
}

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

/* Scale Animations */
.animate-scale-in {
  animation: scaleIn var(--duration-normal) var(--ease-spring) forwards;
}

.animate-pop-in {
  animation: popIn var(--duration-slow) var(--ease-spring) forwards;
}

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

.animate-bounce {
  animation: bounce 1s infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-ping {
  animation: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
}

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

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

.animate-glow-accent {
  animation: glowAccent 2s ease-in-out infinite;
}

.animate-shimmer {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* Special Effects */
.animate-shake {
  animation: shake 0.5s ease-in-out;
}

.animate-wiggle {
  animation: wiggle 0.5s ease-in-out;
}

.animate-heartbeat {
  animation: heartbeat 1.5s ease-in-out infinite;
}

/* ═══════════════════════════════════════════════════════════
   ANIMATION DELAY UTILITIES
   ═══════════════════════════════════════════════════════════ */

.delay-0 { animation-delay: 0ms; }
.delay-75 { animation-delay: 75ms; }
.delay-100 { animation-delay: 100ms; }
.delay-150 { animation-delay: 150ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* ═══════════════════════════════════════════════════════════
   ANIMATION DURATION UTILITIES
   ═══════════════════════════════════════════════════════════ */

.duration-fast { animation-duration: var(--duration-fast); }
.duration-normal { animation-duration: var(--duration-normal); }
.duration-slow { animation-duration: var(--duration-slow); }
.duration-slower { animation-duration: var(--duration-slower); }
.duration-slowest { animation-duration: var(--duration-slowest); }

/* ═══════════════════════════════════════════════════════════
   SCROLL-TRIGGERED ANIMATIONS
   ═══════════════════════════════════════════════════════════ */

/* Initial Hidden State */
[data-animate] {
  opacity: 0;
}

[data-animate="fade-up"] {
  transform: translateY(40px);
}

[data-animate="fade-down"] {
  transform: translateY(-40px);
}

[data-animate="fade-left"] {
  transform: translateX(-40px);
}

[data-animate="fade-right"] {
  transform: translateX(40px);
}

[data-animate="scale"] {
  transform: scale(0.9);
}

[data-animate="zoom"] {
  transform: scale(0.5);
}

/* Animated State */
[data-animate].animated {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

/* Stagger Children */
[data-animate-stagger] > *:nth-child(1) { transition-delay: 0ms; }
[data-animate-stagger] > *:nth-child(2) { transition-delay: 50ms; }
[data-animate-stagger] > *:nth-child(3) { transition-delay: 100ms; }
[data-animate-stagger] > *:nth-child(4) { transition-delay: 150ms; }
[data-animate-stagger] > *:nth-child(5) { transition-delay: 200ms; }
[data-animate-stagger] > *:nth-child(6) { transition-delay: 250ms; }
[data-animate-stagger] > *:nth-child(7) { transition-delay: 300ms; }
[data-animate-stagger] > *:nth-child(8) { transition-delay: 350ms; }
[data-animate-stagger] > *:nth-child(9) { transition-delay: 400ms; }
[data-animate-stagger] > *:nth-child(10) { transition-delay: 450ms; }

/* ═══════════════════════════════════════════════════════════
   HOVER TRANSITION UTILITIES
   ═══════════════════════════════════════════════════════════ */

.hover-lift {
  transition: transform var(--duration-normal) var(--ease-spring);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.hover-scale {
  transition: transform var(--duration-fast) var(--ease-spring);
}

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

.hover-glow {
  transition: box-shadow var(--duration-normal) var(--ease-out);
}

.hover-glow:hover {
  box-shadow: var(--glow-primary);
}

.hover-bright {
  transition: filter var(--duration-fast) var(--ease-out);
}

.hover-bright:hover {
  filter: brightness(1.1);
}

/* ═══════════════════════════════════════════════════════════
   PAGE TRANSITION
   ═══════════════════════════════════════════════════════════ */

.page-transition-overlay {
  position: fixed;
  inset: 0;
  background: var(--gradient-primary);
  z-index: var(--z-max);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--duration-normal) var(--ease-out),
    visibility var(--duration-normal) var(--ease-out);
}

.page-transition-overlay.active {
  opacity: 1;
  visibility: visible;
}

.page-transition-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.page-enter {
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

/* ═══════════════════════════════════════════════════════════
   LOADING COMPONENTS
   ═══════════════════════════════════════════════════════════ */

/* Spinner */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-primary-100);
  border-top-color: var(--color-primary-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

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

/* Dots */
.loading-dots {
  display: flex;
  gap: var(--space-2);
}

.loading-dots span {
  width: 10px;
  height: 10px;
  background: var(--color-primary-500);
  border-radius: 50%;
  animation: loadingDots 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(1) { animation-delay: 0ms; }
.loading-dots span:nth-child(2) { animation-delay: 160ms; }
.loading-dots span:nth-child(3) { animation-delay: 320ms; }

/* Skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-200) 0%,
    var(--color-neutral-100) 50%,
    var(--color-neutral-200) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-xl);
}

/* ═══════════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════════ */

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

  [data-animate] {
    opacity: 1;
    transform: none;
  }
}