/* Animation Engine & Motion Choreography */

/* 1. Scroll-Driven Intersection Reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Stagger Utilities */
.stagger-1 { transition-delay: 60ms; }
.stagger-2 { transition-delay: 120ms; }
.stagger-3 { transition-delay: 180ms; }
.stagger-4 { transition-delay: 240ms; }
.stagger-5 { transition-delay: 300ms; }

/* 2. Hero Calligraphy & Image Soft Entry */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.97);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-hero-image {
  animation: fadeInScale 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 3. Subtle Waveform Pulse (Tajweed Acoustics) */
@keyframes acousticPulse {
  0%, 100% {
    transform: scaleY(1);
    opacity: 0.8;
  }
  50% {
    transform: scaleY(1.4);
    opacity: 1;
  }
}

.waveform-bar {
  display: inline-block;
  width: 3px;
  height: 18px;
  background-color: var(--gold);
  border-radius: var(--radius-full);
  margin-inline: 1.5px;
  transform-origin: bottom;
  animation: acousticPulse 1.2s ease-in-out infinite;
}

.waveform-bar:nth-child(2) { animation-delay: 0.15s; height: 26px; }
.waveform-bar:nth-child(3) { animation-delay: 0.3s; height: 14px; }
.waveform-bar:nth-child(4) { animation-delay: 0.45s; height: 32px; }
.waveform-bar:nth-child(5) { animation-delay: 0.2s; height: 22px; }
.waveform-bar:nth-child(6) { animation-delay: 0.5s; height: 28px; }
.waveform-bar:nth-child(7) { animation-delay: 0.35s; height: 16px; }

/* 4. Subtle Gold Shimmer Border on Hover */
@keyframes goldShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer-hover:hover {
  background: linear-gradient(90deg, transparent, rgba(179, 139, 45, 0.15), transparent);
  background-size: 200% 100%;
  animation: goldShimmer 1.5s infinite;
}

/* Accessibility: Strict Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  
  .animate-hero-image,
  .waveform-bar,
  .shimmer-hover:hover {
    animation: none !important;
    transform: none !important;
  }
}