/* ============================================================
   SINGLE PRODUCT PAGE — appended to style.css
   Matches the screenshot: price, strikethrough, % off, size buttons
============================================================ */

/* BREADCRUMB */
.product-breadcrumb {
  background: var(--gray);
  border-bottom: 1px solid var(--gray2);
  padding: 10px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  font-size: 12px;
  color: var(--muted);
  flex-wrap: wrap;
}
.breadcrumb-list a { color: var(--muted); transition: color .2s; }
.breadcrumb-list a:hover { color: var(--black); }
.bc-sep { color: var(--gray3); }
.bc-current { color: var(--black); font-weight: 600; }

/* PRODUCT LAYOUT */
.single-product-wrap { padding: 40px 0 80px; }
.single-product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: flex-start;
  margin-bottom: 64px;
}

/* IMAGE GALLERY */
.product-gallery { position: sticky; top: 90px; }
.gallery-main {
  position: relative;
  background: var(--gray);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 8px;
}
.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.gallery-main:hover img { transform: scale(1.04); }
.gallery-placeholder { display: flex; align-items: center; justify-content: center; width: 100%; aspect-ratio: 1; }
.gallery-sale-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--red);
  color: #fff;
  font-size: 11px;
  letter-spacing: 1px;
  font-weight: 700;
  padding: 5px 12px;
  text-transform: uppercase;
}
.gallery-wishlist {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(255,255,255,.92);
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .2s;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.gallery-wishlist:hover { background: var(--black); color: var(--white); }
.gallery-thumbs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.gallery-thumbs::-webkit-scrollbar { display: none; }
.thumb-btn {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border: 2px solid transparent;
  background: var(--gray);
  cursor: pointer;
  overflow: hidden;
  padding: 0;
  transition: border-color .2s;
}
.thumb-btn.active, .thumb-btn:hover { border-color: var(--black); }
.thumb-btn img { width: 100%; height: 100%; object-fit: cover; }

/* PRODUCT INFO PANEL */
.product-info-panel { padding-top: 8px; }

.pi-brand {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 8px;
}
.pi-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 40px);
  letter-spacing: 1px;
  line-height: 1;
  margin-bottom: 14px;
}
.pi-rating {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.pi-stars { color: var(--gold); font-size: 14px; letter-spacing: 2px; }
.pi-rating-val { font-size: 13px; font-weight: 700; }
.pi-rating-count { font-size: 12px; color: var(--muted); text-decoration: underline; cursor: pointer; }

/* ============================================================
   PRICE BLOCK — EXACTLY MATCHES SCREENSHOT
   ₹12,999   ₹18,000(line-through)   28% OFF(red)
============================================================ */
.pi-price-block {
  margin-bottom: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--gray2);
  border-bottom: 1px solid var(--gray2);
}
.pi-price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.pi-current-price {
  font-size: 32px;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.5px;
  font-family: var(--font-body);
}
.pi-original-price {
  font-size: 16px;
  color: var(--muted);
  text-decoration: line-through;
  font-weight: 400;
}
.pi-discount-pct {
  font-size: 14px;
  color: var(--red);
  font-weight: 700;
  letter-spacing: 0.5px;
}
.pi-savings {
  font-size: 12px;
  color: var(--green);
  font-weight: 600;
  margin-top: 6px;
}

/* AUTHENTICATED BADGE */
.pi-auth-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}
.auth-check {
  width: 18px;
  height: 18px;
  background: var(--green);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}

/* STOCK */
.pi-stock {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.pi-stock.in-stock { color: var(--green); }
.pi-stock.out-stock { color: var(--red); }

/* ============================================================
   SIZE PICKER — EXACTLY MATCHES SCREENSHOT
   UK 6 | UK 7 | [UK 8 black/selected] | UK 9 | UK 10 | UK 11
============================================================ */
.pi-size-section { margin-bottom: 24px; }
.pi-size-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.pi-size-label {
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--black);
}
.pi-size-guide-link {
  font-size: 11px;
  color: var(--muted);
  text-decoration: underline;
  cursor: pointer;
  transition: color .2s;
}
.pi-size-guide-link:hover { color: var(--black); }
.pi-sizes {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
/* Size button — default (white/bordered, no fill) */
.pi-size-btn {
  padding: 10px 16px;
  border: 1.5px solid #d0cdc8;
  background: #fff;
  color: var(--black);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  letter-spacing: 0.3px;
  font-family: var(--font-body);
  min-width: 54px;
  text-align: center;
  border-radius: 2px;
}
.pi-size-btn:hover {
  border-color: var(--black);
  background: #f5f5f5;
}
/* Selected size — black fill, white text (exactly like screenshot UK 8) */
.pi-size-btn.selected,
.pi-size-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
/* Out of stock size */
.pi-size-btn.oos {
  opacity: 0.35;
  cursor: not-allowed;
  text-decoration: line-through;
}
.pi-size-error {
  font-size: 12px;
  color: var(--red);
  margin-top: 8px;
  font-weight: 600;
}

/* ACTIONS */
.pi-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}
.pi-atc-btn {
  flex: 1;
  background: var(--black);
  color: var(--white);
  border: none;
  padding: 16px 20px;
  font-size: 13px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
  font-family: var(--font-body);
}
.pi-atc-btn:hover:not(:disabled) { background: var(--gold); color: var(--black); }
.pi-atc-btn:disabled { background: #ccc; cursor: not-allowed; }
.pi-wishlist-btn {
  background: none;
  border: 1.5px solid var(--black);
  padding: 16px 20px;
  font-size: 20px;
  cursor: pointer;
  transition: all .2s;
}
.pi-wishlist-btn:hover { background: var(--black); color: var(--white); }
.pi-buy-now {
  width: 100%;
  background: var(--gold);
  color: var(--black);
  border: none;
  padding: 14px;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 24px;
  transition: background .2s;
  font-family: var(--font-body);
}
.pi-buy-now:hover { background: var(--gold2); }

/* DELIVERY INFO */
.pi-delivery-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
  background: var(--gray);
  margin-bottom: 20px;
}
.pi-delivery-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12px;
}
.pi-delivery-item > span { font-size: 18px; flex-shrink: 0; }
.pi-delivery-item strong { display: block; font-weight: 700; color: var(--black); margin-bottom: 2px; }
.pi-delivery-item span:last-child { color: var(--muted); }

/* META */
.pi-meta { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.pi-meta span, .pi-meta a { color: var(--black); font-weight: 600; }
.pi-meta a:hover { text-decoration: underline; }

/* PRODUCT TABS */
.product-tabs-wrap { margin-bottom: 64px; }
.product-tabs {
  display: flex;
  border-bottom: 1px solid var(--gray2);
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: 0;
}
.product-tabs::-webkit-scrollbar { display: none; }
.ptab {
  padding: 14px 24px;
  background: none;
  border: none;
  border-bottom: 2.5px solid transparent;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
  margin-bottom: -1px;
}
.ptab.active, .ptab:hover { color: var(--black); border-bottom-color: var(--black); }
.ptab-content { display: none; padding: 32px 0; }
.ptab-content.active { display: block; }
.ptab-body { max-width: 800px; font-size: 14px; line-height: 1.9; color: #555; }
.ptab-body h3 { font-family: var(--font-display); font-size: 20px; letter-spacing: 1px; margin-bottom: 12px; color: var(--black); }
.size-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.size-table th { background: var(--black); color: var(--white); padding: 12px 16px; font-size: 10px; letter-spacing: 2px; text-transform: uppercase; text-align: left; font-weight: 700; }
.size-table td { padding: 12px 16px; border-bottom: 1px solid var(--gray2); font-size: 13px; color: var(--muted); }
.size-table tr:hover td { background: var(--gray); }
.auth-guarantee { background: #e8f5e9; border-left: 4px solid var(--green); padding: 20px; margin-top: 24px; }
.auth-guarantee strong { display: block; font-size: 14px; margin-bottom: 8px; color: var(--black); }
.auth-guarantee p { font-size: 13px; color: #555; line-height: 1.8; margin: 0; }

/* RELATED */
.related-products-section { margin-bottom: 32px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .single-product-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-gallery { position: static; }
  .pi-delivery-info { grid-template-columns: 1fr; }
  .single-product-wrap { padding: 20px 0 48px; }
  .pi-title { font-size: 28px; }
  .pi-current-price { font-size: 26px; }
}
@media (max-width: 600px) {
  .pi-sizes { gap: 6px; }
  .pi-size-btn { padding: 9px 12px; font-size: 12px; min-width: 46px; }
  .pi-actions { flex-direction: column; }
  .pi-wishlist-btn { width: 100%; padding: 14px; }
  .thumb-btn { width: 56px; height: 56px; }
}