/* ============================================
   MA POPOTE - Animation Library
   ============================================ */

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

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

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

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

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

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

@keyframes popIn {
  0% { opacity: 0; transform: scale(0.5); }
  70% { transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

/* ---- Spring Animation ---- */
@keyframes spring {
  0% { transform: translateX(100%); opacity: 0; }
  60% { transform: translateX(-5%); opacity: 1; }
  80% { transform: translateX(2%); }
  100% { transform: translateX(0); }
}

@keyframes springUp {
  0% { transform: translateY(30px); opacity: 0; }
  60% { transform: translateY(-4px); opacity: 1; }
  80% { transform: translateY(2px); }
  100% { transform: translateY(0); }
}

/* ---- Slide Animations ---- */
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

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

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

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

/* ---- Bounce ---- */
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---- Pulse ---- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

/* ---- Shake ---- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* ---- Check-off (Shopping list) ---- */
@keyframes checkOff {
  0% { transform: scale(1); }
  30% { transform: scale(0.95); }
  60% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

@keyframes strikethrough {
  from { width: 0; }
  to { width: 100%; }
}

/* ---- Typing Indicator ---- */
@keyframes typingDot {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

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

@keyframes confettiSwirl {
  0% { transform: translateX(0) translateY(-100vh) rotate(0deg); }
  25% { transform: translateX(30px); }
  50% { transform: translateX(-20px); }
  75% { transform: translateX(15px); }
  100% { transform: translateX(0) translateY(100vh) rotate(720deg); }
}

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

/* ---- Stagger Reveal ---- */
@keyframes staggerIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- Progress Bar Fill ---- */
@keyframes fillProgress {
  from { width: 0%; }
  to { width: var(--progress-width, 100%); }
}

/* ---- Toast Slide ---- */
@keyframes toastSlideIn {
  from { transform: translateX(100%) translateY(0); opacity: 0; }
  to { transform: translateX(0) translateY(0); opacity: 1; }
}

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

/* ---- Utility Classes ---- */
.animate-fade-in { animation: fadeIn var(--transition-slow) ease forwards; }
.animate-fade-in-up { animation: fadeInUp var(--transition-slow) ease forwards; }
.animate-fade-in-down { animation: fadeInDown var(--transition-slow) ease forwards; }
.animate-scale-in { animation: scaleIn var(--transition-slow) ease forwards; }
.animate-pop-in { animation: popIn var(--transition-spring) forwards; }
.animate-spring { animation: spring var(--transition-spring) forwards; }
.animate-spring-up { animation: springUp var(--transition-spring) forwards; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-shake { animation: shake 0.4s ease; }

.animate-slide-up { animation: slideUp var(--transition-slow) ease forwards; }

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  animation: staggerIn var(--transition-slow) ease forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 80ms; }
.stagger-children > *:nth-child(3) { animation-delay: 160ms; }
.stagger-children > *:nth-child(4) { animation-delay: 240ms; }
.stagger-children > *:nth-child(5) { animation-delay: 320ms; }
.stagger-children > *:nth-child(6) { animation-delay: 400ms; }
.stagger-children > *:nth-child(7) { animation-delay: 480ms; }
.stagger-children > *:nth-child(8) { animation-delay: 560ms; }
.stagger-children > *:nth-child(9) { animation-delay: 640ms; }
.stagger-children > *:nth-child(10) { animation-delay: 720ms; }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg-warm) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

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

.skeleton-image {
  width: 100%;
  aspect-ratio: 16/9;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

/* Scroll-triggered (add .in-view via JS) */
/* Progressive enhancement: only hide when JS is ready */
.js-ready .scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-ready .scroll-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}