/* ============================================
   Keyframes & Animation Classes
   ============================================ */

/* --- Fade In (general) --- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease-out both;
}

.fade-in-d1 { animation-delay: 0.1s; }
.fade-in-d2 { animation-delay: 0.2s; }
.fade-in-d3 { animation-delay: 0.3s; }
.fade-in-d4 { animation-delay: 0.4s; }
.fade-in-d5 { animation-delay: 0.5s; }

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

/* --- Float animation (for cards around phone) --- */
@keyframes floatCard {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.anim-float {
  animation: floatCard 8s ease-in-out infinite;
}

.anim-float-d1 { animation-delay: 0s; }
.anim-float-d2 { animation-delay: -2s; }
.anim-float-d3 { animation-delay: -4s; }
.anim-float-d4 { animation-delay: -6s; }

/* --- Geometric line slide (hero background) --- */
@keyframes lineSlide {
  0% { opacity: 0; transform: translateX(-100px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: translateX(100px); }
}

/* --- Pulse --- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.anim-pulse {
  animation: pulse 2s ease-in-out infinite;
}