/* ============================================================
   SIGNIA — Animation System
   Keyframes + IntersectionObserver-driven classes
   ============================================================ */

/* --- Keyframes -------------------------------------------- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-left {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes blink-line {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 1; }
}

/* --- IntersectionObserver-triggered classes --------------- */
.anim-fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.anim-fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }
.anim-delay-5 { transition-delay: 0.5s; }