/* Animações e transições - Roblox Vault */

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Page transition */
.page-content {
  animation: pageEnter 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.page-content.is-leaving {
  animation: none;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* Stagger children */
.stagger-children > * {
  animation: fadeInUp 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.stagger-children > *:nth-child(1) { animation-delay: 0.03s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.06s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.09s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.12s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.18s; }
.stagger-children > *:nth-child(n+7) { animation-delay: 0.21s; }

.item-grid.stagger-children .item-card:nth-child(odd) { animation-delay: calc(0.03s * var(--i, 1)); }
.item-grid .item-card { animation: fadeInUp 0.35s cubic-bezier(0.22, 1, 0.36, 1) both; }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-gray) 25%,
    #e8eaed 50%,
    var(--color-bg-gray) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-card {
  background: var(--gradient-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.skeleton-card__image {
  height: 130px;
}

.skeleton-card__body {
  padding: var(--space-3);
}

.skeleton-card__line {
  height: 12px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-card__line--short { width: 60%; }
.skeleton-card__line--medium { width: 80%; }

.skeleton-carousel .skeleton-card {
  flex: 0 0 160px;
}

.skeleton-carousel .skeleton-card__image {
  height: 120px;
}

.skeleton-carousel {
  display: flex;
  gap: var(--space-3);
  overflow: hidden;
}

.skeleton-block {
  border-radius: var(--radius-xl);
}

.skeleton-block--hero-balances {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.skeleton-block--hero-balances .skeleton {
  height: 72px;
  border-radius: var(--radius-xl);
}

.skeleton-block--banner {
  height: 140px;
  margin: 0 var(--space-4) var(--space-4);
  border-radius: var(--radius-xl);
}

.skeleton-block--alert {
  height: 52px;
  margin: 0 var(--space-4) var(--space-4);
  border-radius: var(--radius-lg);
}

.skeleton-block--quick {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  padding: var(--space-2) var(--space-4);
}

.skeleton-block--quick .skeleton {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
}

.skeleton-block--summary {
  margin: 0 var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-2xl);
  background: var(--gradient-card);
  box-shadow: var(--shadow-card);
}

.skeleton-block--summary .skeleton {
  margin-bottom: var(--space-3);
}

.skeleton-block--row {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.skeleton-block--filters {
  padding: 0 var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-block--filters .skeleton:first-child {
  height: 48px;
  border-radius: var(--radius-full);
}

.skeleton-block--filters .skeleton-row {
  display: flex;
  gap: var(--space-2);
}

.skeleton-block--filters .skeleton-row .skeleton {
  flex: 1;
  height: 40px;
  border-radius: var(--radius-md);
}

.is-skeleton-loading > * {
  pointer-events: none;
}

/* Product images */
.product-card__img,
.item-card__img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--space-2);
}

.item-card__image,
.product-card__image {
  overflow: hidden;
}

.item-card__image--loaded,
.product-card__image--loaded {
  background: var(--gradient-card);
}

/* Page loader overlay */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--gradient-page);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.page-loader__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-bg-gray);
  border-top-color: var(--color-bg-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* View Transitions API */
@supports (view-transition-name: none) {
  ::view-transition-old(root) {
    animation: 0.25s ease both fade-out;
  }
  ::view-transition-new(root) {
    animation: 0.35s ease both fade-in-vt;
  }
  @keyframes fade-out {
    to { opacity: 0; transform: scale(0.98); }
  }
  @keyframes fade-in-vt {
    from { opacity: 0; transform: translateY(8px); }
  }
}

/* Interactive polish */
.header__btn,
.bottom-nav__item,
.product-card,
.item-card,
.quick-access__icon,
.btn-primary,
.alert-bar {
  transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.product-card:active,
.item-card:active {
  transform: scale(0.98);
}

.bottom-nav__item.active {
  animation: scaleIn 0.3s ease both;
}

.item-card__img[loading] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.item-card__img.loaded,
.product-card__img.loaded {
  opacity: 1;
}