/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS & UX TRANSITIONS
   React Bits-inspired animations for Django storefront
   ═══════════════════════════════════════════════════════════════ */

/* ── Scroll Reveal (fade-in on viewport entry) ──────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

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

/* Direction variants */
.reveal--left {
  transform: translateX(-40px);
}
.reveal--left.is-visible {
  transform: translateX(0);
}

.reveal--right {
  transform: translateX(40px);
}
.reveal--right.is-visible {
  transform: translateX(0);
}

.reveal--scale {
  transform: scale(0.92);
}
.reveal--scale.is-visible {
  transform: scale(1);
}

/* ── Stagger children (cards appearing one by one) ──────────── */
.stagger-children > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger-children.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children.is-visible > *:nth-child(1)  { transition-delay: 0ms; }
.stagger-children.is-visible > *:nth-child(2)  { transition-delay: 60ms; }
.stagger-children.is-visible > *:nth-child(3)  { transition-delay: 120ms; }
.stagger-children.is-visible > *:nth-child(4)  { transition-delay: 180ms; }
.stagger-children.is-visible > *:nth-child(5)  { transition-delay: 240ms; }
.stagger-children.is-visible > *:nth-child(6)  { transition-delay: 300ms; }
.stagger-children.is-visible > *:nth-child(7)  { transition-delay: 360ms; }
.stagger-children.is-visible > *:nth-child(8)  { transition-delay: 420ms; }
.stagger-children.is-visible > *:nth-child(9)  { transition-delay: 480ms; }
.stagger-children.is-visible > *:nth-child(10) { transition-delay: 540ms; }
.stagger-children.is-visible > *:nth-child(11) { transition-delay: 600ms; }
.stagger-children.is-visible > *:nth-child(12) { transition-delay: 660ms; }

/* ── Page transition (body fade-in on load) ─────────────────── */
.page-enter {
  animation: pageEnter 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Enhanced product card hover ────────────────────────────── */
.product-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.product-card__image img {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover .product-card__image img:not(.product-card__slide--hidden) {
  transform: scale(1.05);
}

/* Badge pulse on hover */
.product-card__badge {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.product-card:hover .product-card__badge {
  transform: scale(1.08);
}

/* ── Enhanced button effects ────────────────────────────────── */
.btn {
  position: relative;
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.15s ease,
              background 0.25s ease,
              color 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn:active {
  transform: translateY(0) scale(0.97);
  box-shadow: none;
}

/* Ripple container */
.btn .btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: ripple 0.6s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* CTA bar button hover effect */
.home-cta-bar__btn {
  position: relative;
  overflow: hidden;
  transition: background 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              letter-spacing 0.3s ease;
}

.home-cta-bar__btn:hover {
  letter-spacing: 0.18em;
  transform: translateY(-1px);
}

/* ── Hero entrance animation ────────────────────────────────── */
.hero__slide.is-active .hero__title {
  animation: heroTextUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.hero__slide.is-active .hero__subtitle {
  animation: heroTextUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.35s both;
}

.hero__slide.is-active .hero__cta {
  animation: heroTextUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

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

/* Hero parallax-like subtle zoom */
.hero__slide.is-active .hero__media {
  animation: heroZoom 8s ease-out forwards;
}

@keyframes heroZoom {
  from { transform: scale(1.06); }
  to   { transform: scale(1); }
}

/* ── Dot navigation enhanced ────────────────────────────────── */
.hero__dot {
  transition: background 0.3s, transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__dot.is-active {
  background: #fff;
  transform: scale(1);
  width: 24px;
  border-radius: 4px;
}

/* ── Navbar link hover underline slide ──────────────────────── */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              left 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover::after {
  width: 60%;
  left: 20%;
}

/* ── Dropdown enhanced animation ────────────────────────────── */
@media (min-width: 769px) {
  .nav-dropdown {
    display: block !important;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.25s,
                transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-item--dropdown:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-dropdown__item {
    transition: background 0.15s, padding-left 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-dropdown__item:hover {
    padding-left: 1.6rem;
  }
}

/* ── Gallery thumbnail transition ───────────────────────────── */
.product-gallery__thumb {
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.3s ease,
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-gallery__thumb:hover {
  transform: scale(1.08);
}

.product-gallery__thumb.active {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Main image crossfade */
.product-gallery__main img {
  transition: opacity 0.4s ease;
}

/* ── Variation button enhanced ──────────────────────────────── */
.variation-btn {
  transition: border-color 0.2s,
              background 0.2s,
              color 0.2s,
              transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.2s;
}

.variation-btn:hover:not(.out-of-stock) {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.variation-btn.selected {
  transform: scale(1.05);
  box-shadow: 0 3px 12px rgba(var(--color-primary-rgb, 0, 0, 0), 0.25);
}

/* ── Cart badge bounce ──────────────────────────────────────── */
.cart-badge {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cart-badge.is-bumped {
  animation: badgeBounce 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes badgeBounce {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.4); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

/* ── Section title slide-in ─────────────────────────────────── */
.section-title {
  position: relative;
  overflow: hidden;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.is-visible .section-title::after,
.section-title.is-visible::after {
  width: 60px;
}

/* ── Breadcrumb fade-in ─────────────────────────────────────── */
.breadcrumb {
  animation: fadeSlideRight 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeSlideRight {
  from {
    opacity: 0;
    transform: translateX(-12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── Form control focus glow ────────────────────────────────── */
.form-control {
  transition: border-color 0.25s ease,
              box-shadow 0.25s ease;
}

.form-control:focus {
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb, 0, 0, 0), 0.1);
}

/* ── Pagination button hover ────────────────────────────────── */
.pagination__btn {
  transition: background 0.25s, color 0.25s, border-color 0.25s,
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.pagination__btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ── Alert slide-in ─────────────────────────────────────────── */
.alert {
  animation: alertSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes alertSlideIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Header shrink (enhanced) ───────────────────────────────── */
.site-header {
  transition: box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.3s ease,
              background 0.3s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── Footer reveal ──────────────────────────────────────────── */
.site-footer {
  position: relative;
}

/* ── Smooth scroll ──────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

/* ── Skeleton shimmer (for future lazy loading) ─────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-surface, #f1f5f9) 25%,
    rgba(255, 255, 255, 0.6) 50%,
    var(--color-surface, #f1f5f9) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius, 8px);
}

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

/* ── Product detail entrance ────────────────────────────────── */
.product-gallery {
  animation: fadeSlideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

.product-info {
  animation: fadeSlideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.25s both;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Add to cart button pulse when enabled ──────────────────── */
.add-to-cart-btn:not(:disabled) {
  animation: subtlePulse 2s ease-in-out infinite;
}

.add-to-cart-btn:not(:disabled):hover {
  animation: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

@keyframes subtlePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb, 0, 0, 0), 0.2); }
  50%      { box-shadow: 0 0 0 8px rgba(var(--color-primary-rgb, 0, 0, 0), 0); }
}

/* ── Filter sidebar smooth ──────────────────────────────────── */
.filter-list__link {
  transition: color 0.2s, padding-left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.filter-list__link:hover {
  padding-left: 0.5rem;
}

.filter-list__link--active {
  padding-left: 0.5rem;
}

/* ── Checkbox animation ─────────────────────────────────────── */
.filter-checkbox input[type="checkbox"] {
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.filter-checkbox input[type="checkbox"]:checked {
  transform: scale(1.15);
}

/* ── Summary box in cart ────────────────────────────────────── */
.summary-box {
  transition: box-shadow 0.3s ease;
}

.summary-box:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

/* ── Reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .stagger-children > * {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}