/* === Entrance animations === */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translate3d(0, 30px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes fadeDown {
  from {
    opacity: 0;
    transform: translate3d(0, -20px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideFromLeft {
  from {
    opacity: 0;
    transform: translate3d(-40px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes slideFromRight {
  from {
    opacity: 0;
    transform: translate3d(40px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

/* === Decorative / Ambient === */
@keyframes pulseGlow {
  0% {
    box-shadow: 0 0 0 0 rgba(212, 165, 165, 0.55);
    transform: scale(1);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(212, 165, 165, 0);
    transform: scale(1.04);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(212, 165, 165, 0);
    transform: scale(1);
  }
}

@keyframes dayHighlightGlowOut {
  0% {
    box-shadow: 0 6px 12px rgba(143, 13, 43, 0.28), 0 0 0 0 rgba(181, 18, 54, 0.55);
  }
  70% {
    box-shadow: 0 6px 12px rgba(143, 13, 43, 0.28), 0 0 0 12px rgba(181, 18, 54, 0);
  }
  100% {
    box-shadow: 0 6px 12px rgba(143, 13, 43, 0.28), 0 0 0 0 rgba(181, 18, 54, 0);
  }
}

@keyframes floatSoft {
  0% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -7px, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@keyframes floatSlow {
  0% { transform: translate3d(0, 0, 0) rotate(0deg); }
  33% { transform: translate3d(3px, -4px, 0) rotate(1deg); }
  66% { transform: translate3d(-2px, -2px, 0) rotate(-1deg); }
  100% { transform: translate3d(0, 0, 0) rotate(0deg); }
}

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

@keyframes breathe {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

@keyframes slideUpReveal {
  from {
    opacity: 0;
    transform: translate3d(0, 40px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes heartBeat {
  0% { transform: scale(1); }
  15% { transform: scale(1.15); }
  30% { transform: scale(1); }
  45% { transform: scale(1.1); }
  60% { transform: scale(1); }
}

/* === Timeline stagger === */
@keyframes timelineEnter {
  from {
    opacity: 0;
    transform: translate3d(-20px, 16px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

/* === Heading accent underline === */
@keyframes underlineGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}