/* 
========================================
  ANIMATIONS & KEYFRAMES
======================================== 
*/

/* --- Keyframes --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(212, 163, 115, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(212, 163, 115, 0); }
  100% { box-shadow: 0 0 0 0 rgba(212, 163, 115, 0); }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

/* --- Premium Loader --- */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-background);
  z-index: var(--z-loader);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity var(--transition-slow);
}

.loader-logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  animation: pulseGlow 2s infinite;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-pill);
}

.page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

/* --- Scroll Reveal Classes --- */
.reveal {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform, visibility;
}

.reveal.active {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.reveal-up {
  transform: translateY(40px);
}

.reveal-left {
  transform: translateX(-40px);
}

.reveal-right {
  transform: translateX(40px);
}

.reveal-scale {
  transform: scale(0.9);
}

/* Staggered children for lists/grids */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* --- Component Specific Animations --- */
.btn-animated {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-animated::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 100%;
  background: rgba(255,255,255,0.1);
  z-index: -1;
  transition: width var(--transition-smooth);
}

.btn-animated:hover::before {
  width: 100%;
}

.img-hover-zoom {
  overflow: hidden;
}

.img-hover-zoom img {
  transition: transform var(--transition-slow);
}

.img-hover-zoom:hover img {
  transform: scale(1.08);
}

/* --- Skeleton Loading --- */
.skeleton {
  background: #eee;
  background: linear-gradient(to right, #eeeeee 8%, #dddddd 18%, #eeeeee 33%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite linear;
}