/**
 * Animations - Nina Rauen Breathwork
 * Scroll animations, transitions, and micro-interactions
 */

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

/* Elements that fade in on scroll */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered animation for list items */
.fade-in-stagger > *:nth-child(1) { transition-delay: 0.1s; }
.fade-in-stagger > *:nth-child(2) { transition-delay: 0.2s; }
.fade-in-stagger > *:nth-child(3) { transition-delay: 0.3s; }
.fade-in-stagger > *:nth-child(4) { transition-delay: 0.4s; }
.fade-in-stagger > *:nth-child(5) { transition-delay: 0.5s; }
.fade-in-stagger > *:nth-child(6) { transition-delay: 0.6s; }

/* Slide in from left */
.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Slide in from right */
.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Scale up animation */
.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

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

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

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

/* Pulse animation */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

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

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

.animate-fade-in {
  animation: fadeIn 0.5s ease-in;
}

/* Slide down animation */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slide-down {
  animation: slideDown 0.4s ease-out;
}

/* Slide up animation */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slide-up {
  animation: slideUp 0.4s ease-out;
}

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

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

/* Bounce animation */
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

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

/* ============================================
   BUTTON ANIMATIONS
   ============================================ */

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

/* Ripple effect on click */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

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

.shake {
  animation: shake 0.5s;
}

/* ============================================
   LOADING ANIMATIONS
   ============================================ */

/* Skeleton loading */
@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    var(--color-off-white) 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

/* Dots loading */
@keyframes dot-pulse {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

.dots-loading {
  display: inline-flex;
  gap: 5px;
}

.dots-loading span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: dot-pulse 1.4s infinite ease-in-out;
}

.dots-loading span:nth-child(1) {
  animation-delay: 0s;
}

.dots-loading span:nth-child(2) {
  animation-delay: 0.2s;
}

.dots-loading span:nth-child(3) {
  animation-delay: 0.4s;
}

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

/* Card hover lift */
.card-hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

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

.img-hover-zoom img {
  transition: transform 0.6s ease;
}

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

/* Link hover underline */
.link-hover-underline {
  position: relative;
  text-decoration: none;
}

.link-hover-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width var(--transition-base);
}

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

/* ============================================
   ICON ANIMATIONS
   ============================================ */

/* Icon spin on hover */
.icon-spin-hover {
  transition: transform var(--transition-base);
}

.icon-spin-hover:hover {
  transform: rotate(360deg);
}

/* Icon bounce on hover */
.icon-bounce-hover {
  transition: transform var(--transition-fast);
}

.icon-bounce-hover:hover {
  animation: bounce 0.5s ease-in-out;
}

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

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

.gradient-animated {
  background: linear-gradient(
    270deg,
    var(--color-sage),
    var(--color-teal),
    var(--color-primary)
  );
  background-size: 600% 600%;
  animation: gradient-shift 10s ease infinite;
}

/* ============================================
   TRANSITION UTILITIES
   ============================================ */

.transition-fast {
  transition: all var(--transition-fast);
}

.transition-base {
  transition: all var(--transition-base);
}

.transition-slow {
  transition: all var(--transition-slow);
}

.transition-none {
  transition: none !important;
}

/* ============================================
   REVEAL ON SCROLL (Performance optimized)
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

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

/* Delay variants */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ============================================
   NOTIFICATION ANIMATIONS
   ============================================ */

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

.notification.slide-in {
  animation: slideInRight 0.3s ease-out forwards;
}

.notification.slide-out {
  animation: slideOutRight 0.3s ease-in forwards;
}

/* ============================================
   COOKIE CONSENT ANIMATION
   ============================================ */

.cookie-consent {
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.cookie-consent.show {
  transform: translateY(0);
  opacity: 1;
}

/* ============================================
   ACCESSIBILITY - Respect reduced motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .fade-in,
  .slide-in-left,
  .slide-in-right,
  .scale-in,
  .reveal {
    opacity: 1;
    transform: none;
  }
}