/**
 * Friktionskompasset Animations
 * Nordic Clarity Design System
 *
 * Smooth, purposeful animations that enhance UX
 * All animations respect prefers-reduced-motion
 */

/* ============================================
 * KEYFRAME DEFINITIONS
 * ============================================ */

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

/* Fade In Up - Subtle entrance from below */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade In Down - Subtle entrance from above */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Slide Up - More pronounced vertical movement */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Slide Down - For dropdowns */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Slide In Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale In - Zoom entrance */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scale In Big - For modals */
@keyframes scaleInBig {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Pop In - Playful bounce effect */
@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  70% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Pulse - Attention getter */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

/* Shimmer - Loading effect */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

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

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

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

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

/* Base animation class */
.animate {
  animation-fill-mode: both;
  animation-duration: 400ms;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Animation types */
.animate-fade-in {
  animation-name: fadeIn;
}

.animate-fade-in-up {
  animation-name: fadeInUp;
}

.animate-fade-in-down {
  animation-name: fadeInDown;
}

.animate-slide-up {
  animation-name: slideUp;
}

.animate-slide-down {
  animation-name: slideDown;
}

.animate-slide-in-left {
  animation-name: slideInLeft;
}

.animate-slide-in-right {
  animation-name: slideInRight;
}

.animate-scale-in {
  animation-name: scaleIn;
}

.animate-pop-in {
  animation-name: popIn;
}

.animate-pulse {
  animation-name: pulse;
  animation-duration: 2s;
  animation-iteration-count: infinite;
}

.animate-spin {
  animation-name: spin;
  animation-duration: 1s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}

.animate-bounce {
  animation-name: bounce;
  animation-duration: 1s;
  animation-iteration-count: infinite;
}

.animate-shake {
  animation-name: shake;
  animation-duration: 500ms;
}

/* Animation durations */
.animate-fast {
  animation-duration: 200ms;
}

.animate-normal {
  animation-duration: 400ms;
}

.animate-slow {
  animation-duration: 600ms;
}

.animate-slower {
  animation-duration: 1000ms;
}

/* Animation delays */
.animate-delay-100 {
  animation-delay: 100ms;
}

.animate-delay-200 {
  animation-delay: 200ms;
}

.animate-delay-300 {
  animation-delay: 300ms;
}

.animate-delay-400 {
  animation-delay: 400ms;
}

.animate-delay-500 {
  animation-delay: 500ms;
}

.animate-delay-700 {
  animation-delay: 700ms;
}

.animate-delay-1000 {
  animation-delay: 1000ms;
}

/* ============================================
 * STAGGER REVEAL SYSTEM
 * Apply .stagger-reveal to parent container
 * Children will animate in sequence
 * ============================================ */

.stagger-reveal > * {
  opacity: 0;
  animation: fadeInUp 500ms ease-out forwards;
}

.stagger-reveal > *:nth-child(1) { animation-delay: 0ms; }
.stagger-reveal > *:nth-child(2) { animation-delay: 50ms; }
.stagger-reveal > *:nth-child(3) { animation-delay: 100ms; }
.stagger-reveal > *:nth-child(4) { animation-delay: 150ms; }
.stagger-reveal > *:nth-child(5) { animation-delay: 200ms; }
.stagger-reveal > *:nth-child(6) { animation-delay: 250ms; }
.stagger-reveal > *:nth-child(7) { animation-delay: 300ms; }
.stagger-reveal > *:nth-child(8) { animation-delay: 350ms; }
.stagger-reveal > *:nth-child(9) { animation-delay: 400ms; }
.stagger-reveal > *:nth-child(10) { animation-delay: 450ms; }
.stagger-reveal > *:nth-child(n+11) { animation-delay: 500ms; }

/* Faster stagger variant */
.stagger-reveal-fast > * {
  opacity: 0;
  animation: fadeInUp 300ms ease-out forwards;
}

.stagger-reveal-fast > *:nth-child(1) { animation-delay: 0ms; }
.stagger-reveal-fast > *:nth-child(2) { animation-delay: 30ms; }
.stagger-reveal-fast > *:nth-child(3) { animation-delay: 60ms; }
.stagger-reveal-fast > *:nth-child(4) { animation-delay: 90ms; }
.stagger-reveal-fast > *:nth-child(5) { animation-delay: 120ms; }
.stagger-reveal-fast > *:nth-child(6) { animation-delay: 150ms; }
.stagger-reveal-fast > *:nth-child(n+7) { animation-delay: 180ms; }

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

/* Lift on hover - for cards */
.hover-lift {
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg, 0 10px 15px -3px rgb(0 0 0 / 0.1));
}

/* Subtle lift - less dramatic */
.hover-lift-sm {
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.hover-lift-sm:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md, 0 4px 6px -1px rgb(0 0 0 / 0.1));
}

/* Scale on hover */
.hover-scale {
  transition: transform 200ms ease;
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Glow on hover */
.hover-glow {
  transition: box-shadow 200ms ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(79, 70, 229, 0.3);
}

/* Icon rotate on hover (for parent hover) */
.group:hover .group-hover-rotate {
  transform: rotate(90deg);
}

.group-hover-rotate {
  transition: transform 200ms ease;
}

/* ============================================
 * PAGE TRANSITIONS
 * ============================================ */

/* Page content fade in */
.page-enter {
  opacity: 0;
  transform: translateY(10px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 300ms ease, transform 300ms ease;
}

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

/* Skeleton loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--gray-200, #e2e8f0) 25%,
    var(--gray-100, #f1f5f9) 50%,
    var(--gray-200, #e2e8f0) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md, 0.5rem);
}

/* Loading spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--gray-200, #e2e8f0);
  border-top-color: var(--color-primary, #4f46e5);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* ============================================
 * FOCUS STATES
 * ============================================ */

.focus-ring {
  outline: none;
  transition: box-shadow 150ms ease;
}

.focus-ring:focus-visible {
  box-shadow: 0 0 0 3px var(--color-primary-200, #c7d2fe);
}

/* ============================================
 * SCROLL-TRIGGERED ANIMATIONS
 * Use with IntersectionObserver JS
 * ============================================ */

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-on-scroll-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal-on-scroll-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-on-scroll-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal-on-scroll-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
 * REDUCED MOTION
 * Respect user preferences - CRITICAL
 * ============================================ */

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

  .stagger-reveal > *,
  .stagger-reveal-fast > * {
    opacity: 1;
    animation: none;
  }

  .hover-lift:hover,
  .hover-lift-sm:hover,
  .hover-scale:hover {
    transform: none;
  }

  .reveal-on-scroll,
  .reveal-on-scroll-left,
  .reveal-on-scroll-right {
    opacity: 1;
    transform: none;
  }
}