/* ==========================================================================
   MUHAMMAD ANSAR PORTFOLIO — KEYFRAMES & INTERACTION ANIMATIONS
   Smooth, non-jarring, hardware-accelerated transitions
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. SCROLL REVEAL UTILITY CLASSES (IntersectionObserver Driven)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
  will-change: opacity, transform;
}

.reveal-fade-up {
  transform: translateY(35px);
}
.reveal-fade-left {
  transform: translateX(-35px);
}
.reveal-fade-right {
  transform: translateX(35px);
}
.reveal-scale {
  transform: scale(0.94);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger Delay Helpers */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* --------------------------------------------------------------------------
   2. KEYFRAMES
   -------------------------------------------------------------------------- */
@keyframes pulseGoldGlow {
  0%, 100% {
    box-shadow: 0 0 15px rgba(242, 169, 0, 0.2);
  }
  50% {
    box-shadow: 0 0 30px rgba(242, 169, 0, 0.5);
  }
}

@keyframes scanlineMove {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(1000%); }
}

@keyframes shimmerEffect {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Gold Underline Glow Animation */
.gold-underline-glow {
  position: relative;
}
.gold-underline-glow::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  transition: width 0.35s ease;
  box-shadow: 0 0 8px var(--gold);
}
.gold-underline-glow:hover::after {
  width: 100%;
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  #bg-canvas {
    display: none;
  }
}