/* — Reveals — */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.1s var(--easing), transform 1.1s var(--easing);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.22s; }
.reveal.delay-3 { transition-delay: 0.34s; }
.reveal.delay-4 { transition-delay: 0.46s; }

/* Hero entrance */
.hero-anim {
  opacity: 0;
  transform: translateY(20px);
  animation: heroIn 1.4s var(--easing) forwards;
}
.hero-anim.d1 { animation-delay: 0.15s; }
.hero-anim.d2 { animation-delay: 0.35s; }
.hero-anim.d3 { animation-delay: 0.55s; }
.hero-anim.d4 { animation-delay: 0.75s; }
.hero-anim.d5 { animation-delay: 0.95s; }

@keyframes heroIn {
  to { opacity: 1; transform: translateY(0); }
}

/* --- Input Validation Shake Animation --- */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}
.shake {
  animation: shake 0.3s ease-in-out;
}