/*
 * EditorialGlow — Micro-Interaction Animations
 * Loaded after core design system (style.css)
 * Step 1: Transitions, Keyframes, Scroll-reveal
 */

/* ─────────────────────────────────────────────
   KEYFRAME LIBRARY
   ───────────────────────────────────────────── */

@keyframes eg-fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes eg-fade-down {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes eg-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes eg-scale-in {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes eg-slide-right {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes eg-gold-shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

@keyframes eg-pulse-ring {
  0%   { transform: scale(1);    opacity: 0.8; }
  70%  { transform: scale(1.15); opacity: 0; }
  100% { transform: scale(1.15); opacity: 0; }
}

@keyframes eg-like-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.35); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

@keyframes eg-skeleton-wave {
  0%   { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

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

/* ─────────────────────────────────────────────
   SCROLL-REVEAL UTILITY
   JS adds .is-visible when IntersectionObserver fires
   ───────────────────────────────────────────── */
.eg-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity  var(--eg-duration-slow)  var(--eg-ease-luxury),
    transform var(--eg-duration-slow) var(--eg-ease-luxury);
}

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

.eg-reveal--delay-1 { transition-delay: 0.1s; }
.eg-reveal--delay-2 { transition-delay: 0.2s; }
.eg-reveal--delay-3 { transition-delay: 0.3s; }
.eg-reveal--delay-4 { transition-delay: 0.4s; }

/* ─────────────────────────────────────────────
   GOLD SHIMMER TEXT EFFECT (headings, badges)
   ───────────────────────────────────────────── */
.eg-shimmer-text {
  background: linear-gradient(
    90deg,
    var(--eg-gold-dark) 0%,
    var(--eg-gold-light) 40%,
    var(--eg-gold) 50%,
    var(--eg-gold-light) 60%,
    var(--eg-gold-dark) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: eg-gold-shimmer 3.5s linear infinite;
}

/* ─────────────────────────────────────────────
   INTERACTIVE ELEMENT TRANSITIONS
   ───────────────────────────────────────────── */

/* Navigation links */
.eg-nav-link {
  position: relative;
  padding-bottom: 2px;
  transition: color var(--eg-duration-slow) var(--eg-ease-luxury);
}

.eg-nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--eg-gold);
  transition: width var(--eg-duration-slow) var(--eg-ease-luxury);
}

.eg-nav-link:hover::after,
.eg-nav-link[aria-current="page"]::after {
  width: 100%;
}

/* Image hover zoom (scoped — no overflow issue) */
.eg-image-zoom {
  overflow: hidden;
  border-radius: var(--eg-radius-md);
}

.eg-image-zoom img {
  display: block;
  width: 100%;
  transition: transform var(--eg-duration-xslow) var(--eg-ease-luxury);
}

.eg-image-zoom:hover img {
  transform: scale(1.06);
}

/* ─────────────────────────────────────────────
   LIKE / DISLIKE BUTTON ANIMATIONS
   ───────────────────────────────────────────── */
.eg-reaction-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1.5px solid var(--eg-gray-200);
  border-radius: var(--eg-radius-full);
  background: var(--eg-white);
  font-size: var(--eg-text-sm);
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color  var(--eg-duration-slow) var(--eg-ease-luxury),
    color         var(--eg-duration-slow) var(--eg-ease-luxury),
    box-shadow    var(--eg-duration-slow) var(--eg-ease-luxury),
    background    var(--eg-duration-slow) var(--eg-ease-luxury);
  -webkit-tap-highlight-color: transparent;
}

.eg-reaction-btn:hover {
  border-color: var(--eg-gold);
  color: var(--eg-gold);
  box-shadow: 0 2px 12px var(--eg-gold-20);
}

.eg-reaction-btn.is-active {
  background: var(--eg-gold-10);
  border-color: var(--eg-gold);
  color: var(--eg-gold);
}

.eg-reaction-btn .eg-reaction-icon {
  font-size: 1.1em;
  transition: transform var(--eg-duration-slow) var(--eg-ease-luxury);
}

.eg-reaction-btn:hover .eg-reaction-icon,
.eg-reaction-btn.is-active .eg-reaction-icon {
  animation: eg-like-pop 0.4s var(--eg-ease-luxury) both;
}

/* ─────────────────────────────────────────────
   VIEW COUNTER DISPLAY
   ───────────────────────────────────────────── */
.eg-view-counter {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--eg-text-sm);
  color: var(--eg-charcoal-60);
}

.eg-view-counter svg {
  opacity: 0.6;
}

/* ─────────────────────────────────────────────
   CTA STICKY ANIMATION
   ───────────────────────────────────────────── */
.eg-cta-sticky {
  position: sticky;
  bottom: var(--eg-space-6);
  z-index: var(--eg-z-sticky);
  animation: eg-fade-up 0.5s var(--eg-ease-luxury) both;
}

/* ─────────────────────────────────────────────
   SKELETON LOADER
   ───────────────────────────────────────────── */
.eg-skeleton {
  background: linear-gradient(
    90deg,
    var(--eg-gray-100) 25%,
    var(--eg-gray-50)  50%,
    var(--eg-gray-100) 75%
  );
  background-size: 200px 100%;
  animation: eg-skeleton-wave 1.5s infinite linear;
  border-radius: var(--eg-radius-sm);
}

/* ─────────────────────────────────────────────
   TOAST / SNACKBAR
   ───────────────────────────────────────────── */
.eg-toast {
  position: fixed;
  bottom: var(--eg-space-6);
  right: var(--eg-space-6);
  z-index: var(--eg-z-toast);
  padding: var(--eg-space-3) var(--eg-space-6);
  background: var(--eg-charcoal);
  color: var(--eg-ivory);
  border-radius: var(--eg-radius-md);
  font-size: var(--eg-text-sm);
  font-weight: 500;
  box-shadow: var(--eg-shadow-lg);
  animation: eg-fade-up 0.3s var(--eg-ease-luxury) both;
}

.eg-toast--gold {
  background: var(--eg-gold);
}

/* ─────────────────────────────────────────────
   REDUCED MOTION OVERRIDE
   ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .eg-reveal,
  .eg-shimmer-text,
  .eg-cta-sticky,
  .eg-toast,
  .eg-reaction-btn .eg-reaction-icon {
    animation: none !important;
    transition: none !important;
  }

  .eg-reveal {
    opacity: 1;
    transform: none;
  }
}