/* ============================================
   DALGONA NARA - Animations
   ============================================ */

/* ========== Keyframe Definitions ========== */

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

@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);
  }
}

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

@keyframes scaleUp {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.05);
  }
}

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

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

/* Shake Animation */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

/* Bounce Animation */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-15px);
  }
  60% {
    transform: translateY(-7px);
  }
}

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

/* Shimmer Animation (for loading) */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Glow Animation */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px var(--color-primary-gold);
  }
  50% {
    box-shadow: 0 0 20px var(--color-primary-gold), 0 0 30px var(--color-primary-gold-light);
  }
}

/* Slide In from Bottom */
@keyframes slideInBottom {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

/* Fade Animations */
.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
}

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

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

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

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

/* Scale Animations */
.animate-scale-in {
  animation: scaleIn 0.5s ease forwards;
}

/* Float Animation */
.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Pulse Animation */
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Bounce Animation */
.animate-bounce {
  animation: bounce 1s ease infinite;
}

/* Spin Animation */
.animate-spin {
  animation: spin 1s linear infinite;
}

/* ========== Scroll Reveal Classes ========== */
/* These classes are applied by JavaScript when elements enter viewport */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* ========== Staggered Animations ========== */
.stagger-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-item:nth-child(4) { transition-delay: 0.4s; }
.stagger-item:nth-child(5) { transition-delay: 0.5s; }
.stagger-item:nth-child(6) { transition-delay: 0.6s; }
.stagger-item:nth-child(7) { transition-delay: 0.7s; }
.stagger-item:nth-child(8) { transition-delay: 0.8s; }

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

/* Card Lift Effect */
.hover-lift {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

/* Card Scale Effect */
.hover-scale {
  transition: transform var(--transition-normal);
}

.hover-scale:hover {
  transform: scale(1.03);
}

/* Image Zoom Effect */
.hover-zoom {
  overflow: hidden;
}

.hover-zoom img {
  transition: transform var(--transition-slow);
}

.hover-zoom:hover img {
  transform: scale(1.1);
}

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

.hover-shine::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s ease;
}

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

/* Underline Effect */
.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary-gold);
  transition: width var(--transition-normal);
}

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

/* Glow Effect */
.hover-glow:hover {
  box-shadow: 0 0 20px rgba(212, 165, 116, 0.4);
}

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

.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

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

.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

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

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

.skeleton-image {
  aspect-ratio: 1;
  width: 100%;
}

/* ========== Page Transitions ========== */

.page-enter {
  opacity: 0;
  transform: translateY(20px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.page-exit {
  opacity: 1;
}

.page-exit-active {
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* ========== Hero Specific Animations ========== */

.hero-title {
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-subtitle {
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-buttons {
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-image {
  opacity: 0;
  animation: fadeIn 1s ease 0.4s forwards, float 4s ease-in-out 1.4s infinite;
}

/* ========== Decorative Elements ========== */

.deco-circle {
  animation: float 6s ease-in-out infinite;
}

.deco-circle:nth-child(2) {
  animation-delay: -2s;
}

.deco-circle:nth-child(3) {
  animation-delay: -4s;
}

/* ========== Notification/Toast Animations ========== */

.toast-enter {
  animation: slideInBottom 0.3s ease forwards;
}

.toast-exit {
  animation: fadeIn 0.2s ease reverse forwards;
}

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

.modal-backdrop {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-backdrop.active {
  opacity: 1;
}

.modal-content {
  opacity: 0;
  transform: scale(0.95) translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.modal-backdrop.active .modal-content {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* ========== Animation Delay Utilities ========== */

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }
.delay-900 { animation-delay: 0.9s; }
.delay-1000 { animation-delay: 1s; }

/* ========== Animation Duration Utilities ========== */

.duration-fast { animation-duration: 0.2s; }
.duration-normal { animation-duration: 0.4s; }
.duration-slow { animation-duration: 0.6s; }
.duration-slower { animation-duration: 1s; }