/* ============================================
   Finance 101 - Animations
   All animation keyframes and utilities
   ============================================ */

/* ============================================
   Respect User Preferences
   ============================================ */

@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;
  }
}

/* ============================================
   Entrance Animations
   ============================================ */

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

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

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

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

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

.animate-fade-in-down {
  animation: fadeInDown 0.5s ease forwards;
}

/* Fade In Left */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-left {
  animation: fadeInLeft 0.5s ease forwards;
}

/* Fade In Right */
@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-right {
  animation: fadeInRight 0.5s ease forwards;
}

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

.animate-scale-in {
  animation: scaleIn 0.3s ease forwards;
}

/* Pop In (with overshoot) */
@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  70% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-pop-in {
  animation: popIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

/* ============================================
   Exit Animations
   ============================================ */

/* Fade Out */
@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.animate-fade-out {
  animation: fadeOut 0.3s ease forwards;
}

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

.animate-scale-out {
  animation: scaleOut 0.3s ease forwards;
}

/* ============================================
   Attention Animations
   ============================================ */

/* Pulse */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

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

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

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

/* Shake */
@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 0.6s ease;
}

/* Wiggle */
@keyframes wiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-3deg);
  }
  75% {
    transform: rotate(3deg);
  }
}

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

/* Ping (for notifications) */
@keyframes ping {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

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

/* ============================================
   Progress Animations
   ============================================ */

/* Progress Bar Fill */
@keyframes progressFill {
  from {
    width: 0;
  }
}

.animate-progress-fill {
  animation: progressFill 1s ease-out forwards;
}

/* Count Up - JS helper class */
.count-up {
  transition: none;
}

/* Progress Ring */
@keyframes progressRing {
  from {
    stroke-dashoffset: var(--progress-circumference);
  }
}

.animate-progress-ring {
  animation: progressRing 1s ease-out forwards;
}

/* Fill from left to right */
@keyframes fillRight {
  from {
    transform: scaleX(0);
    transform-origin: left;
  }
  to {
    transform: scaleX(1);
    transform-origin: left;
  }
}

.animate-fill-right {
  animation: fillRight 0.8s ease-out forwards;
}

/* ============================================
   Celebration Animations
   ============================================ */

/* Badge Unlock */
@keyframes badgeUnlock {
  0% {
    opacity: 0;
    transform: scale(0) rotate(-180deg);
  }
  50% {
    opacity: 1;
    transform: scale(1.2) rotate(10deg);
  }
  70% {
    transform: scale(0.9) rotate(-5deg);
  }
  100% {
    transform: scale(1) rotate(0deg);
  }
}

.animate-badge-unlock {
  animation: badgeUnlock 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

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

.confetti-piece {
  position: fixed;
  width: 10px;
  height: 10px;
  top: -10px;
  animation: confettiFall 3s linear forwards;
}

/* Star burst */
@keyframes starBurst {
  0% {
    transform: scale(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: scale(3) rotate(180deg);
    opacity: 0;
  }
}

.animate-star-burst {
  animation: starBurst 0.6s ease-out forwards;
}

/* Celebration bounce */
@keyframes celebrationBounce {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  25% {
    transform: translateY(-20px) scale(1.1);
  }
  50% {
    transform: translateY(-10px) scale(1.05);
  }
}

.animate-celebration {
  animation: celebrationBounce 0.6s ease;
}

/* ============================================
   Floating/Background Animations
   ============================================ */

/* Float */
@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

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

.animate-float-slow {
  animation: float 8s ease-in-out infinite;
}

.animate-float-fast {
  animation: float 4s ease-in-out infinite;
}

/* Float Reverse */
@keyframes floatReverse {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(20px) rotate(-5deg);
  }
}

.animate-float-reverse {
  animation: floatReverse 7s ease-in-out infinite;
}

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

.animate-rotate-slow {
  animation: rotateSlow 20s linear infinite;
}

/* Drift */
@keyframes drift {
  0%, 100% {
    transform: translate(0, 0);
  }
  25% {
    transform: translate(10px, -10px);
  }
  50% {
    transform: translate(-5px, 5px);
  }
  75% {
    transform: translate(-10px, -5px);
  }
}

.animate-drift {
  animation: drift 10s ease-in-out infinite;
}

/* ============================================
   Interactive Feedback Animations
   ============================================ */

/* Button Press */
@keyframes buttonPress {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

.animate-button-press {
  animation: buttonPress 0.15s ease;
}

/* Card Lift */
.card-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

/* Glow Pulse */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
  }
}

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

/* Correct Answer */
@keyframes correctAnswer {
  0% {
    background-color: var(--color-surface);
  }
  50% {
    background-color: #DCFCE7;
  }
  100% {
    background-color: #DCFCE7;
  }
}

.animate-correct {
  animation: correctAnswer 0.5s ease forwards;
}

/* Incorrect Answer */
@keyframes incorrectAnswer {
  0% {
    background-color: var(--color-surface);
    transform: translateX(0);
  }
  10%, 30%, 50% {
    transform: translateX(-5px);
  }
  20%, 40% {
    transform: translateX(5px);
  }
  60% {
    transform: translateX(0);
  }
  100% {
    background-color: #FEE2E2;
    transform: translateX(0);
  }
}

.animate-incorrect {
  animation: incorrectAnswer 0.5s ease forwards;
}

/* ============================================
   Number Counter Animation
   ============================================ */

/* For JS-driven counting */
.number-counter {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* Flip digits */
@keyframes flipDigit {
  0% {
    transform: rotateX(0);
  }
  50% {
    transform: rotateX(90deg);
  }
  100% {
    transform: rotateX(0);
  }
}

.animate-flip-digit {
  animation: flipDigit 0.3s ease;
}

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

/* Page Enter */
@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-enter {
  animation: pageEnter 0.4s ease forwards;
}

/* Page content stagger - add delays via inline style or JS */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ============================================
   Scroll-triggered Animations
   (Use with Intersection Observer)
   ============================================ */

.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(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  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);
}

/* ============================================
   Loading Animations
   ============================================ */

/* Spinner */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

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

/* Dots Loading */
@keyframes dotsLoading {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

.loading-dots {
  display: flex;
  gap: 4px;
}

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

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

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

.skeleton-shimmer {
  background: linear-gradient(
    90deg,
    var(--color-border-light) 25%,
    var(--color-border) 50%,
    var(--color-border-light) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

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

/* Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-700 { animation-delay: 700ms; }
.delay-1000 { animation-delay: 1000ms; }

/* Durations */
.duration-150 { animation-duration: 150ms; }
.duration-200 { animation-duration: 200ms; }
.duration-300 { animation-duration: 300ms; }
.duration-500 { animation-duration: 500ms; }
.duration-700 { animation-duration: 700ms; }
.duration-1000 { animation-duration: 1000ms; }

/* Animation fill modes */
.fill-forwards { animation-fill-mode: forwards; }
.fill-backwards { animation-fill-mode: backwards; }
.fill-both { animation-fill-mode: both; }

/* Iteration */
.infinite { animation-iteration-count: infinite; }

/* Easing */
.ease-linear { animation-timing-function: linear; }
.ease-in { animation-timing-function: ease-in; }
.ease-out { animation-timing-function: ease-out; }
.ease-in-out { animation-timing-function: ease-in-out; }
.ease-bounce { animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55); }

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

.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.hover-scale {
  transition: transform 0.3s ease;
}

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

.hover-glow {
  transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

.hover-underline {
  position: relative;
}

.hover-underline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: currentColor;
  transition: width 0.3s ease;
}

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