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

@keyframes avatarGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(255,0,110,0.3), 0 0 40px rgba(255,0,110,0.15); }
  50% { box-shadow: 0 0 30px rgba(255,0,110,0.5), 0 0 60px rgba(255,0,110,0.25); }
}

@keyframes glowPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

@keyframes ecgScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes termBlink {
  50% { opacity: 0; }
}

@keyframes sleepMoonScoreFill {
  from { width: 0; }
}

@keyframes sleepMoonPillFade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeSlideRight {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes shelfFadeIn {
  0% { opacity: 0; transform: translateX(-6px); }
  100% { opacity: 1; transform: translateX(0); }
}

@keyframes hydraSteam {
  0%, 100% { opacity: 0.2; transform: translateY(0) scaleY(1); }
  50% { opacity: 0.5; transform: translateY(-4px) scaleY(1.3); }
}

@keyframes hydraWave {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-10px); }
}

@keyframes mapRingPulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.5); opacity: 0; }
}

@keyframes bookOverlayIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes bookModalIn {
  0% { opacity: 0; transform: scale(0.95) translateY(10px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

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

/* ===== SHIMMER (for empty states) ===== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton-bar {
  background: linear-gradient(90deg,
    rgba(255,255,255,0.04) 25%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.04) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s ease-in-out infinite;
  border-radius: 4px;
}

/* ===== REDUCED MOTION (WCAG 2.3.3) ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}