.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

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

.stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--transition-normal),
    transform var(--transition-normal);
}

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger.visible > *:nth-child(1) {
  transition-delay: 0.08s;
}

.stagger.visible > *:nth-child(2) {
  transition-delay: 0.16s;
}

.stagger.visible > *:nth-child(3) {
  transition-delay: 0.24s;
}

.stagger.visible > *:nth-child(4) {
  transition-delay: 0.32s;
}

.btn::after,
.whatsapp-confirm__button::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.18),
    transparent
  );
  transition: transform 0.6s ease;
}

.btn:hover::after,
.whatsapp-confirm__button:hover::before {
  transform: translateX(120%);
}

@keyframes particleFloat {
  0% {
    transform: translate3d(0, 20px, 0) scale(0.8);
    opacity: 0;
  }

  15% {
    opacity: 0.55;
  }

  85% {
    opacity: 0.4;
  }

  100% {
    transform: translate3d(35px, -120px, 0) scale(1.15);
    opacity: 0;
  }
}