.loader-heart {
  animation: heartBeat 900ms ease-in-out infinite;
}

@keyframes heartBeat {
  0%, 100% {
    transform: rotate(45deg) scale(0.92);
  }
  45% {
    transform: rotate(45deg) scale(1.08);
  }
}

.moon {
  animation: moonFloat 9s ease-in-out infinite;
}

@keyframes moonFloat {
  0%, 100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-0.5rem, 0.8rem, 0);
  }
}

.scroll-cue span {
  animation: scrollPulse 1.7s ease-in-out infinite;
}

@keyframes scrollPulse {
  0% {
    opacity: 0;
    transform: translate(-50%, 0);
  }
  35% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 1.15rem);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 800ms ease, transform 800ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.envelope {
  animation: envelopeDrop 1200ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

@keyframes envelopeDrop {
  0% {
    opacity: 0;
    transform: translateY(-42vh) rotate(-8deg);
  }
  70% {
    transform: translateY(1rem) rotate(2deg);
  }
  100% {
    opacity: 1;
    transform: translateY(0) rotate(0);
  }
}

@keyframes kenBurns {
  from {
    transform: scale(1.04) translate3d(-1%, -1%, 0);
  }
  to {
    transform: scale(1.13) translate3d(1%, 1%, 0);
  }
}

.petal,
.firefly {
  position: absolute;
  border-radius: 999px;
}

.petal {
  width: 0.8rem;
  height: 1.35rem;
  background: linear-gradient(180deg, #ffd1dc, #ff8aac);
  opacity: 0.42;
  filter: blur(0.2px);
}

.petal-a {
  left: 10%;
  top: -10%;
  animation: petalFall 18s linear infinite;
}

.petal-b {
  left: 60%;
  top: -12%;
  animation: petalFall 22s linear 4s infinite;
}

.petal-c {
  left: 82%;
  top: -9%;
  animation: petalFall 20s linear 8s infinite;
}

@keyframes petalFall {
  0% {
    transform: translate3d(0, -10vh, 0) rotate(0deg);
  }
  100% {
    transform: translate3d(-12vw, 115vh, 0) rotate(420deg);
  }
}

.firefly {
  width: 0.38rem;
  height: 0.38rem;
  background: var(--mint);
  box-shadow: 0 0 18px var(--mint), 0 0 34px rgba(183, 255, 216, 0.56);
}

.firefly-a {
  left: 14%;
  top: 54%;
  animation: fireflyPathA 9s ease-in-out infinite;
}

.firefly-b {
  left: 72%;
  top: 62%;
  animation: fireflyPathB 12s ease-in-out infinite;
}

.firefly-c {
  left: 44%;
  top: 72%;
  animation: fireflyPathC 10s ease-in-out infinite;
}

@keyframes fireflyPathA {
  50% {
    transform: translate3d(10vw, -18vh, 0);
  }
}

@keyframes fireflyPathB {
  50% {
    transform: translate3d(-14vw, -10vh, 0);
  }
}

@keyframes fireflyPathC {
  50% {
    transform: translate3d(12vw, 8vh, 0);
  }
}

.teddy {
  animation: teddyFloat 4s ease-in-out infinite;
}

@keyframes teddyFloat {
  50% {
    transform: translateY(-0.8rem);
  }
}

.sparkle {
  animation: sparkleOut 720ms ease-out forwards;
}

@keyframes sparkleOut {
  to {
    opacity: 0;
    transform: translate3d(var(--dx), var(--dy), 0) scale(0);
  }
}

.heart-burst {
  animation: heartBurst 980ms ease-out forwards;
}

@keyframes heartBurst {
  to {
    opacity: 0;
    transform: translate3d(var(--dx), var(--dy), 0) rotate(var(--rot)) scale(0.4);
  }
}

body.celebrating .final-background {
  animation: finalReveal 1600ms ease both, kenBurns 18s ease-in-out infinite alternate;
}

@keyframes finalReveal {
  from {
    filter: blur(8px) brightness(0.8);
    transform: scale(1.18);
  }
  to {
    filter: blur(0) brightness(1);
    transform: scale(1.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}