/* ========================================
   ANIMATIONS & KEYFRAMES
   ======================================== */

/* Scroll reveal base states */
[data-animate] {
  opacity: 0;
}

[data-animate="fade-up"] {
  transform: translateY(40px);
}

[data-animate="fade-in"] {
  transform: none;
}

[data-animate="slide-left"] {
  transform: translateX(-60px);
}

[data-animate="slide-right"] {
  transform: translateX(60px);
}

[data-animate="scale-in"] {
  transform: scale(0.85);
}

[data-animate].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

/* Stagger children */
[data-animate="stagger"] > * {
  opacity: 0;
  transform: translateY(40px);
}

[data-animate="stagger"].is-visible > * {
  opacity: 1;
  transform: none;
  transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

/* ========================================
   DECORATIVE ANIMATIONS
   ======================================== */

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-12px) rotate(1.5deg); }
  66% { transform: translateY(-6px) rotate(-1deg); }
}

@keyframes float-reverse {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(8px) rotate(-1deg); }
  66% { transform: translateY(4px) rotate(1.5deg); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(155, 91, 191, 0); }
  50% { box-shadow: 0 0 20px 4px rgba(155, 91, 191, 0.15); }
}

@keyframes breathe {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

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

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

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

@keyframes dash-flow {
  to { stroke-dashoffset: -20; }
}

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

@keyframes quiz-segment-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* === CUTE ANIMATIONS === */

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  20% { transform: rotate(-3deg); }
  40% { transform: rotate(3deg); }
  60% { transform: rotate(-2deg); }
  80% { transform: rotate(2deg); }
}

@keyframes bounce-in {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.08); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes jelly {
  0% { transform: scale(1); }
  30% { transform: scale(1.05, 0.95); }
  50% { transform: scale(0.95, 1.05); }
  70% { transform: scale(1.02, 0.98); }
  100% { transform: scale(1); }
}

@keyframes sparkle {
  0%, 100% { opacity: 0; transform: scale(0) rotate(0deg); }
  50% { opacity: 1; transform: scale(1) rotate(180deg); }
}

@keyframes heart-float {
  0% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-60px) scale(0.6); }
}

@keyframes star-twinkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes pop-in {
  0% { transform: scale(0); opacity: 0; }
  70% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes confetti-fall {
  0% { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes float-with-wiggle {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-8px) rotate(2deg); }
  50% { transform: translateY(-4px) rotate(-1deg); }
  75% { transform: translateY(-10px) rotate(1deg); }
}

/* Floating decorative elements */
.deco-float {
  animation: float 3s ease-in-out infinite;
  pointer-events: none;
}

.deco-float:nth-child(2) { animation: float-reverse 3.5s ease-in-out infinite; animation-delay: -0.5s; }
.deco-float:nth-child(3) { animation: float 4s ease-in-out infinite; animation-delay: -1.5s; }
.deco-float:nth-child(4) { animation: float-reverse 4.5s ease-in-out infinite; animation-delay: -1s; }
.deco-float:nth-child(5) { animation: float 5s ease-in-out infinite; animation-delay: -2s; }
.deco-float:nth-child(6) { animation: float-reverse 5.5s ease-in-out infinite; animation-delay: -1s; }
.deco-float:nth-child(7) { animation: float 6s ease-in-out infinite; animation-delay: -2.5s; }
.deco-float:nth-child(8) { animation: float-reverse 4.5s ease-in-out infinite; animation-delay: -1.5s; }

.breathing-glow {
  animation: pulse-glow 1.5s ease-in-out infinite;
}

/* Page transition wrapper */
.page-wrapper {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.175s var(--ease-out), transform 0.175s var(--ease-out);
}

.page-wrapper.is-exiting {
  opacity: 0;
  transform: translateY(-20px);
}

/* ========================================
   SVG SPECIFIC ANIMATIONS
   ======================================== */

.svg-draw-path {
  stroke-dasharray: var(--path-length, 1000);
  stroke-dashoffset: var(--path-length, 1000);
  transition: stroke-dashoffset 1s var(--ease-out);
}

.svg-draw-path.is-drawn {
  stroke-dashoffset: 0;
}

.svg-glow {
  filter: drop-shadow(0 0 8px rgba(155, 91, 191, 0.3));
}

.svg-glow-teal {
  filter: drop-shadow(0 0 8px rgba(62, 181, 137, 0.3));
}

.svg-glow-amber {
  filter: drop-shadow(0 0 8px rgba(255, 144, 64, 0.3));
}

/* Brain region transitions */
.brain-region {
  transition: fill 0.2s var(--ease-out), opacity 0.2s var(--ease-out), transform 0.15s var(--ease-out);
  cursor: pointer;
  transform-origin: center;
}

.brain-region:hover {
  filter: drop-shadow(0 0 12px rgba(155, 91, 191, 0.4));
}

/* ========================================
   SKELETON LOADING
   ======================================== */

.skeleton {
  background: linear-gradient(90deg, var(--neutral-100) 25%, var(--neutral-200) 50%, var(--neutral-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 0.75s ease-in-out infinite;
  border-radius: var(--radius-md);
}

/* ========================================
   COUNTER ANIMATION SUPPORT
   ======================================== */

.stat-counter {
  font-family: var(--font-heading);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

/* ========================================
   CUTE ANIMATION UTILITIES
   ======================================== */

/* Cute animation utilities */
.animate-wiggle { animation: wiggle 0.25s var(--ease-bounce); }
.animate-bounce-in { animation: bounce-in 0.3s var(--ease-bounce); }
.animate-jelly { animation: jelly 0.2s ease; }
.animate-pop-in { animation: pop-in 0.2s var(--ease-bounce); }
.animate-sparkle { animation: sparkle 0.75s ease-in-out infinite; }
.animate-star-twinkle { animation: star-twinkle 1s ease-in-out infinite; }
.animate-float-wiggle { animation: float-with-wiggle 2.5s ease-in-out infinite; }

.hover-wiggle:hover { animation: wiggle 0.25s var(--ease-bounce); }
.hover-bounce:hover { animation: bounce-in 0.2s var(--ease-bounce); }
.hover-jelly:hover { animation: jelly 0.2s ease; }

/* ========================================
   MOBILE: REDUCE DECORATIVE OVERHEAD
   ======================================== */
@media (max-width: 768px) {
  .deco-float {
    display: none !important;
  }
}

/* ========================================
   REDUCED MOTION: DISABLE CUTE ANIMATIONS
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  .animate-wiggle,
  .animate-bounce-in,
  .animate-jelly,
  .animate-pop-in,
  .animate-sparkle,
  .animate-star-twinkle,
  .animate-float-wiggle,
  .hover-wiggle:hover,
  .hover-bounce:hover,
  .hover-jelly:hover {
    animation: none !important;
  }
}