/*
 * Danje Urmia — CSS Animation System
 * Filename: assets/css/animations.css
 */

/* ==========================================================================
   1. KEYFRAMES DEFINITIONS
   ========================================================================== */

/* Fade and slide up entrance */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade and slide from left (visually RTL: comes from left) */
@keyframes fade-left {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade and slide from right (visually RTL: comes from right) */
@keyframes fade-right {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale and fade entrance */
@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Luxury scroll floating indicator */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

/* Premium Gold Shimmer Sweep */
@keyframes gold-shimmer {
  0% {
    background-position: 200% center;
  }
  100% {
    background-position: -200% center;
  }
}

/* Luxury Ambient Gold Pulse Glow */
@keyframes pulse-gold {
  0%, 100% {
    box-shadow: 0 0 12px rgba(201, 168, 76, 0.08), 0 0 0 1px rgba(201, 168, 76, 0.15);
  }
  50% {
    box-shadow: 0 0 28px rgba(201, 168, 76, 0.22), 0 0 0 1px rgba(201, 168, 76, 0.3);
  }
}

/* Skeleton loader sweeping gradient (light theme optimized) */
@keyframes skeleton-loading {
  0% {
    background-position: 150% 0;
  }
  100% {
    background-position: -50% 0;
  }
}

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

/* ==========================================================================
   2. SCROLL REVEAL SYSTEM CLASSES (IntersectionObserver trigger states)
   ========================================================================== */

.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  will-change: transform, opacity;
  transition: opacity var(--dur-reveal) var(--ease-luxury),
              transform var(--dur-reveal) var(--ease-luxury);
}

.reveal       { transform: translateY(40px); }
.reveal-left  { transform: translateX(-50px); }
.reveal-right { transform: translateX(50px); }
.reveal-scale { transform: scale(0.92); }

/* Active visible state when scrolled into viewport */
.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered transition delay falls back to CSS logic */
.reveal-stagger .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger .reveal:nth-child(2) { transition-delay: 100ms; }
.reveal-stagger .reveal:nth-child(3) { transition-delay: 200ms; }
.reveal-stagger .reveal:nth-child(4) { transition-delay: 300ms; }
.reveal-stagger .reveal:nth-child(5) { transition-delay: 400ms; }
.reveal-stagger .reveal:nth-child(6) { transition-delay: 500ms; }
.reveal-stagger .reveal:nth-child(7) { transition-delay: 600ms; }
.reveal-stagger .reveal:nth-child(8) { transition-delay: 700ms; }

/* ==========================================================================
   3. INTERACTIVE ELEMENT STATE STYLES
   ========================================================================== */

/* Buttons interaction: base class must exist on layout button elements */
.danje-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.danje-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(110, 98, 85, 0.12), var(--shadow-gold);
}

.danje-btn:active {
  transform: translateY(0) scale(0.98);
}

.danje-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* Product Card interactions */
.danje-product-card {
  position: relative;
  transition: transform var(--dur-slow) var(--ease-luxury),
              box-shadow var(--dur-slow) var(--ease-luxury),
              border-color var(--dur-slow) var(--ease-luxury);
}

.danje-product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.danje-product-card__image-container {
  position: relative;
  overflow: hidden;
}

.danje-product-card__image-container img {
  transition: transform 0.6s var(--ease-luxury);
}

.danje-product-card:hover .danje-product-card__image-container img {
  transform: scale(1.05);
}

/* Double-bordered glow effect on product hover */
.danje-product-card__gold-border {
  position: absolute;
  inset: 0;
  border: 1px solid var(--gold-border);
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  z-index: 2;
}

.danje-product-card:hover .danje-product-card__gold-border {
  opacity: 1;
  border-color: var(--gold);
}

/* ==========================================================================
   4. NAVIGATION STATES (Optimized for Light Glassmorphism)
   ========================================================================== */

.danje-nav {
  transition: background var(--dur-slow) var(--ease-luxury),
              backdrop-filter var(--dur-slow) var(--ease-luxury),
              -webkit-backdrop-filter var(--dur-slow) var(--ease-luxury),
              border-color var(--dur-slow) var(--ease-luxury),
              padding var(--dur-slow) var(--ease-luxury),
              box-shadow var(--dur-slow) var(--ease-luxury);
}

.danje-nav.nav-scrolled {
  background: rgba(8, 8, 8, 0.85); /* Dark Glassmorphism */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-nav);
}

/* ==========================================================================
   5. SPECIAL EFFECTS & UTILITIES
   ========================================================================== */

/* Gold shimmer text styling */
.gold-shimmer-text {
  background: linear-gradient(
    105deg,
    var(--gold) 25%,
    var(--gold-shimmer) 50%,
    var(--gold) 75%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Animate gold shimmer on hover */
.gold-shimmer-text:hover,
.danje-nav__logo:hover .gold-shimmer-text {
  animation: gold-shimmer 2s linear infinite;
}

/* Scroll float utility */
.scroll-indicator {
  animation: float 2.5s ease-in-out infinite;
}

/* Skeleton Loading component styling (Light theme optimized) */
.danje-skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-section-alt) 25%,
    var(--bg-card-hover) 37%,
    var(--bg-section-alt) 63%
  );
  background-size: 400% 100%;
  animation: skeleton-loading 1.4s ease infinite;
}

/* Shimmer pulse glow for banners or badges */
.pulse-gold-glow {
  animation: pulse-gold 3s ease-in-out infinite;
}