@keyframes buttonPop {
  0% {
    opacity: 0;
    transform: scale(0.97);
  }
  60% {
    opacity: 1;
    transform: scale(1.02);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes navSlideIn {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Global fade-ins, header slides, etc. can also live here */
body {
  animation: bodyFadeIn 1.2s ease-out forwards;
  opacity: 0;
}

@keyframes bodyFadeIn {
  from { opacity: 0; transform: scale(1.01); }
  to { opacity: 1; transform: scale(1); }
}

/* --- Button entrance animation --- */
@keyframes buttonFadeIn {
  0% {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.btn {
  /* keep your existing properties */
  opacity: 0;
  animation: buttonFadeIn 0.7s ease-out forwards;
}

/* Staggered delays for each button */
.button-group .btn:nth-child(1) {
  animation-delay: 0.2s;
}
.button-group .btn:nth-child(2) {
  animation-delay: 0.4s;
}
.button-group .btn:nth-child(3) {
  animation-delay: 0.6s;
}
.button-group .btn:nth-child(4) {
  animation-delay: 0.8s;
}
.button-group .btn:nth-child(5) {
  animation-delay: 1s;
}