/* ============================================
   SINGLE PRODUCT PAGE — product.css
   High-Conversion Design
   ============================================ */

.product-single {
  padding-top: var(--space-6);
  padding-bottom: var(--space-16);
}

/* Breadcrumb */
.product-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: .85rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.product-breadcrumb a { color: var(--clr-text-muted); transition: color var(--dur-fast); }
.product-breadcrumb a:hover { color: var(--clr-primary); }
.product-breadcrumb span:last-child { color: var(--clr-text-body); font-weight: 600; }

/* ── PRODUCT LAYOUT ───────────────────────── */
.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
  margin-bottom: var(--space-16);
}

/* ── GALLERY ──────────────────────────────── */
.product-gallery {
  position: sticky;
  top: calc(var(--header-h) + var(--space-4));
}

.product-gallery__main {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--clr-light-gray);
  aspect-ratio: 1 / 1;
  position: relative;
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-md);
}
.gallery-main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--dur-base);
}
.gallery-main-img.loading { opacity: 0; }

.gallery-badge-sale {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--clr-accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.product-gallery__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--clr-text-muted);
}

/* Thumbnails */
.product-gallery__thumbs {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}
.product-gallery__thumbs::-webkit-scrollbar { height: 4px; }
.product-gallery__thumbs::-webkit-scrollbar-track { background: var(--clr-light-gray); }
.product-gallery__thumbs::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 2px; }

.gallery-thumb {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--clr-border);
  cursor: pointer;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
  background: var(--clr-light-gray);
  padding: 0;
}
.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gallery-thumb:hover { border-color: var(--clr-primary); transform: scale(1.05); }
.gallery-thumb.active {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-lt);
}

/* ── PRODUCT INFO ─────────────────────────── */
.product-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.product-info__cat {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-size: .8rem;
}
.product-info__cat a { color: var(--clr-primary); }

.product-info__name {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--clr-text-head);
  margin: 0;
}

.product-info__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.product-stars { color: #FFD700; font-size: 1.1rem; }
.product-reviews, .product-sku { font-size: .85rem; }

/* Price */
.product-info__price-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-4) var(--space-5);
  background: var(--clr-off-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
}
.product-price {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--clr-primary);
}
.product-price--sale { color: var(--clr-accent); }
.product-price--regular {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--clr-text-muted);
  text-decoration: line-through;
}
.product-price ins { text-decoration: none; }

/* Short desc */
.product-info__short-desc {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--clr-text-body);
  border-right: 3px solid var(--clr-primary);
  padding-right: var(--space-4);
}
.product-info__short-desc p { margin-bottom: var(--space-2); }
.product-info__short-desc ul { padding-right: var(--space-4); }
.product-info__short-desc li { margin-bottom: 4px; }

/* ── VARIANTS ─────────────────────────────── */
.variant-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.variant-group__label {
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-text-head);
}
.variant-selected {
  font-weight: 600;
  color: var(--clr-primary);
  font-size: .85rem;
  margin-right: 4px;
}
.variant-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Size variants */
.variant-btn--size {
  padding: 8px 16px;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-white);
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur-fast);
  color: var(--clr-text-body);
}
.variant-btn--size:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-lt);
}
.variant-btn--size.active {
  border-color: var(--clr-primary);
  background: var(--clr-primary);
  color: #fff;
}

/* Color variants */
.variant-btn--color {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all var(--dur-fast);
  position: relative;
  outline-offset: 3px;
}
.variant-btn--color:hover {
  transform: scale(1.15);
  border-color: rgba(0,0,0,.2);
}
.variant-btn--color.active {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-lt);
}

/* ── QUANTITY ─────────────────────────────── */
.product-qty {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.product-qty__label {
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-text-head);
  white-space: nowrap;
}
.qty-control {
  display: flex;
  align-items: center;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.qty-btn {
  width: 44px;
  height: 44px;
  background: var(--clr-light-gray);
  border: none;
  font-size: 1.3rem;
  font-weight: 300;
  cursor: pointer;
  color: var(--clr-text-head);
  transition: background var(--dur-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.qty-btn:hover { background: var(--clr-mid-gray); }
.qty-input {
  width: 56px;
  height: 44px;
  border: none;
  border-right: 1px solid var(--clr-border);
  border-left: 1px solid var(--clr-border);
  text-align: center;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-head);
  background: var(--clr-white);
  outline: none;
  -moz-appearance: textfield;
}
.qty-input::-webkit-inner-spin-button,
.qty-input::-webkit-outer-spin-button { -webkit-appearance: none; }

/* ── PRIMARY CTA ──────────────────────────── */
.product-cta-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.product-cta-btn {
  width: 100%;
  font-size: 1.2rem;
  padding: 18px 32px;
  border-radius: var(--radius-lg);
  letter-spacing: .01em;
  transition: all var(--dur-base) var(--ease-out);
  animation: pulse-cta 3s ease-in-out infinite;
}
.product-cta-btn:hover { animation: none; }

@keyframes pulse-cta {
  0%, 100% { box-shadow: var(--shadow-cta); }
  50% { box-shadow: 0 8px 30px rgba(255,77,45,.5); }
}

.product-wa-btn {
  width: 100%;
  font-size: .95rem;
}

/* ── TRUST ────────────────────────────────── */
.product-trust {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--clr-off-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
}
.product-trust__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: .82rem;
  font-weight: 600;
  color: var(--clr-text-body);
}

/* ── TABS ─────────────────────────────────── */
.product-tabs {
  border-top: 1px solid var(--clr-border);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
}
.product-tabs__nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--clr-border);
  margin-bottom: var(--space-6);
}
.product-tab-btn {
  padding: 12px 24px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: all var(--dur-fast);
}
.product-tab-btn:hover { color: var(--clr-text-head); }
.product-tab-btn.active {
  color: var(--clr-primary);
  border-bottom-color: var(--clr-primary);
}
.product-tab-panel {
  display: none;
  animation: fade-in var(--dur-base) var(--ease-out);
}
.product-tab-panel.active { display: block; }

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

/* Entry content in tabs */
.entry-content { line-height: 1.8; }
.entry-content p { margin-bottom: var(--space-4); }
.entry-content ul { padding-right: var(--space-5); margin-bottom: var(--space-4); }
.entry-content li { margin-bottom: var(--space-2); }
.entry-content h2, .entry-content h3 { margin: var(--space-6) 0 var(--space-3); }
.entry-content img { border-radius: var(--radius-md); margin: var(--space-4) 0; }

/* Shipping info */
.shipping-info h3 { font-size: 1.1rem; margin-bottom: var(--space-4); }
.shipping-info ul { padding-right: 0; }
.shipping-info ul li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: .95rem;
}
.shipping-info ul li:last-child { border-bottom: none; }

/* ── RELATED PRODUCTS ─────────────────────── */
.related-products {
  border-top: 1px solid var(--clr-border);
  padding-top: var(--space-10);
  margin-top: var(--space-8);
}
.related-products .section-header { margin-bottom: var(--space-6); }

/* ── PRODUCT STICKY CTA ─────────────────────*/
.product-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 800;
  background: var(--clr-white);
  border-top: 1px solid var(--clr-border);
  box-shadow: 0 -4px 20px rgba(0,0,0,.10);
  padding: var(--space-3) var(--space-4);
  transform: translateY(100%);
  transition: transform var(--dur-slow) var(--ease-out);
}
.product-sticky-cta.visible { transform: translateY(0); }
.product-sticky-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.product-sticky-cta__info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.product-sticky-cta__name {
  font-size: .85rem;
  font-weight: 700;
  color: var(--clr-text-head);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.product-sticky-cta__price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--clr-accent);
}

/* ── RESPONSIVE ───────────────────────────── */
@media (max-width: 900px) {
  .product-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .product-gallery {
    position: static;
  }
  .product-sticky-cta { display: block; }
  .product-cta-btn { animation: none; }
}
@media (max-width: 480px) {
  .product-info__price-wrap { padding: var(--space-3); }
  .product-price { font-size: 1.6rem; }
  .product-trust { grid-template-columns: 1fr 1fr; gap: var(--space-2); }
  .product-trust__item { font-size: .78rem; }
}