/* =============================================================
   PRODUCT.CSS  –  Single Product Detail Page  (Professional)
   ============================================================= */

/* ── Page Shell ──────────────────────────────────────────── */
.product-detail-page { padding: 0 0 80px; }

/* ── Product Hero ────────────────────────────────────────── */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 36px;
  align-items: start;
  padding: 32px 0 40px;
}

/* ════════════════════════════════════════════════════════════
   GALLERY
   ════════════════════════════════════════════════════════════ */
.product-gallery { position: sticky; top: 130px; }

.gallery-main {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.3s ease;
}

/* Ambient glow layer behind the image */
.gallery-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(var(--accent-rgb), 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.gallery-main img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter 0.4s ease;
}
.gallery-main:hover img {
  transform: scale(1.04);
  filter: brightness(1.04);
}

.gallery-placeholder {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg-elevated);
}
.gallery-placeholder i    { font-size: 5.5rem; color: var(--accent); opacity: 0.45; }
.gallery-placeholder span { font-size: 0.82rem; color: var(--text-muted); font-weight: 700;
                              text-transform: uppercase; letter-spacing: 0.07em; }

/* Discount badge on gallery */
.gallery-badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 5;
  background: var(--danger);
  color: #fff;
  font-size: 0.78rem; font-weight: 800;
  padding: 5px 11px;
  border-radius: 8px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

/* Authentic badge bottom-right */
.gallery-authentic {
  position: absolute;
  bottom: 14px; right: 14px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--success);
  font-size: 0.72rem; font-weight: 700;
  padding: 5px 10px;
  border-radius: 999px;
}
.gallery-authentic i { font-size: 0.7rem; }

/* ════════════════════════════════════════════════════════════
   BUY BOX
   ════════════════════════════════════════════════════════════ */
.product-buy-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Category link ── */
.product-category-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-muted);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  transition: background 0.2s;
}
.product-category-link:hover { background: rgba(var(--accent-rgb), 0.18); color: var(--accent); }

/* ── Title ── */
.product-title {
  font-size: 1.55rem; font-weight: 800;
  line-height: 1.22;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

/* ── Meta (rating + sku) ── */
.product-meta {
  display: flex; align-items: center;
  gap: 12px; flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-subtle);
}
.product-sku { font-size: 0.76rem; color: var(--text-muted); }

/* ── Price block ── */
.product-price-block { margin-bottom: 14px; }
.product-price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.product-price-main {
  font-size: 2.4rem; font-weight: 900;
  color: var(--accent); line-height: 1;
  letter-spacing: -0.03em;
}
.product-price-orig {
  font-size: 1rem; color: var(--text-muted);
  text-decoration: line-through;
}
.product-price-save {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--success-bg); color: var(--success);
  font-size: 0.78rem; font-weight: 700;
  padding: 3px 10px; border-radius: 999px;
}

/* ── Stock badge ── */
.product-stock-badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.82rem; font-weight: 700;
  padding: 6px 14px; border-radius: 999px;
  margin-bottom: 16px;
}
.product-stock-badge.in-stock  { background: var(--success-bg); color: var(--success); }
.product-stock-badge.low-stock { background: var(--warning-bg); color: var(--warning); }
.product-stock-badge.out-stock { background: var(--danger-bg);  color: var(--danger); }
/* Animated pulse dot */
.product-stock-badge::before {
  content: '';
  width: 7px; height: 7px; border-radius: 50%;
  background: currentColor;
  animation: stockPulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes stockPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.75); }
}

/* ── Short description ── */
.product-short-desc {
  font-size: 0.875rem; color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}

/* ════════════════════════════════════════════════════════════
   ACTION ROW  –  Qty | Add to Cart | Buy Now | Wishlist
   All on the same line
   ════════════════════════════════════════════════════════════ */
.product-actions-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

/* Qty stepper inside action row */
.product-qty-stepper {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-elevated);
  flex-shrink: 0;
  height: 46px;
}
.product-qty-stepper button {
  background: none;
  border: none;
  color: var(--text-primary);
  width: 32px; height: 100%;
  cursor: pointer;
  font-size: 1rem; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.product-qty-stepper button:hover { background: var(--accent-muted); color: var(--accent); }
.product-qty-stepper input {
  border: none !important;
  border-radius: 0 !important;
  width: 38px; height: 100%;
  text-align: center;
  font-weight: 700; font-size: 0.92rem;
  padding: 0 !important;
  box-shadow: none !important;
  background: transparent !important;
  color: var(--text-primary) !important;
}
/* Remove number spinners */
.product-qty-stepper input::-webkit-outer-spin-button,
.product-qty-stepper input::-webkit-inner-spin-button { -webkit-appearance: none; }
.product-qty-stepper input[type=number] { -moz-appearance: textfield; }

/* Add to Cart */
.btn-add-cart {
  flex: 1;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  height: 46px;
  padding: 0 18px;
  font-size: 0.9rem; font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex; align-items: center; justify-content: center;
  gap: 8px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.3);
}
.btn-add-cart:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(var(--accent-rgb), 0.45);
}
.btn-add-cart:active { transform: translateY(0); box-shadow: none; }
.btn-add-cart.loading { opacity: 0.7; pointer-events: none; }
.btn-add-cart:disabled { background: var(--border-color); box-shadow: none; cursor: not-allowed; }

/* Buy Now */
.btn-buy-now {
  flex: 1;
  background: transparent;
  color: var(--success);
  border: 1.5px solid var(--success);
  border-radius: 10px;
  height: 46px;
  padding: 0 18px;
  font-size: 0.9rem; font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex; align-items: center; justify-content: center;
  gap: 8px;
  text-decoration: none;
  white-space: nowrap;
}
.btn-buy-now:hover {
  background: var(--success);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(63,185,80,0.35);
}
[data-theme="light"] .btn-buy-now { color: var(--success); border-color: var(--success); }
[data-theme="light"] .btn-buy-now:hover { background: var(--success); color: #fff; }

/* Wishlist button */
.btn-wishlist-product {
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: 10px;
  border: 1.5px solid var(--border-color);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex; align-items: center; justify-content: center;
}
.btn-wishlist-product:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-bg);
}
.btn-wishlist-product.wishlisted {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-bg);
}
.btn-wishlist-product.wishlisted i { font-weight: 900; }

/* ════════════════════════════════════════════════════════════
   TRUST BADGES  –  4-item horizontal strip
   ════════════════════════════════════════════════════════════ */
.product-trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 14px 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  transition: border-color 0.2s, background 0.2s;
}
.trust-item:hover { border-color: var(--accent); background: var(--accent-muted); }
.trust-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent-muted);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
  flex-shrink: 0;
}
.trust-item strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.72rem; font-weight: 700;
  line-height: 1.3;
}
.trust-item span {
  color: var(--text-muted);
  font-size: 0.68rem;
  line-height: 1.3;
}

/* ════════════════════════════════════════════════════════════
   TABS
   ════════════════════════════════════════════════════════════ */
.product-tabs-section {
  margin-top: 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.product-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-elevated);
  padding: 0 8px;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.product-tabs-nav::-webkit-scrollbar { display: none; }
.product-tab-btn {
  padding: 15px 22px;
  background: none; border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.875rem; font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  margin-bottom: -1px;
}
.product-tab-btn:hover { color: var(--text-primary); }
.product-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-pane { display: none; padding: 30px; }
.tab-pane.active { display: block; }

/* Description */
.product-description { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.8; }
.product-description h4 { color: var(--text-primary); margin: 20px 0 10px; font-size: 1rem; }
.product-description ul { padding-left: 20px; }
.product-description ul li { margin-bottom: 6px; }

/* Specs */
.specs-table { width: 100%; border-collapse: collapse; }
.specs-table tr:nth-child(even) { background: var(--bg-elevated); }
.specs-table tr { border-bottom: 1px solid var(--border-subtle); }
.specs-table td { padding: 11px 16px; font-size: 0.875rem; }
.specs-table td:first-child { color: var(--text-muted); font-weight: 600; width: 38%; }
.specs-table td:last-child  { color: var(--text-primary); font-weight: 600; }

/* Reviews */
.reviews-summary {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px; align-items: center;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}
.reviews-avg-score {
  text-align: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 22px 30px;
}
.reviews-avg-number { font-size: 3.2rem; font-weight: 900; color: var(--accent); line-height: 1; }
.reviews-avg-stars  { color: var(--warning); font-size: 1.1rem; margin: 6px 0 4px; }
.reviews-avg-count  { font-size: 0.76rem; color: var(--text-muted); }
.reviews-bars { display: flex; flex-direction: column; gap: 9px; }
.review-bar-row { display: flex; align-items: center; gap: 10px; font-size: 0.8rem; }
.review-bar-label { color: var(--text-muted); white-space: nowrap; width: 36px; }
.review-bar-track { flex: 1; height: 8px; background: var(--bg-elevated);
                     border-radius: 999px; overflow: hidden; }
.review-bar-fill  { height: 100%; background: var(--warning);
                     border-radius: 999px; transition: width 0.7s ease; }
.review-bar-count { color: var(--text-muted); width: 24px; text-align: right; font-size: 0.76rem; }

.review-card {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.review-card:last-child { border-bottom: none; }
.review-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.review-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff; font-weight: 800; font-size: 0.88rem;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.review-author { font-weight: 700; font-size: 0.88rem; color: var(--text-primary); }
.review-date   { font-size: 0.75rem; color: var(--text-muted); }
.review-stars  { color: var(--warning); font-size: 0.85rem; margin-left: auto; }
.review-text   { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1100px) {
  .product-hero { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .product-hero { grid-template-columns: 1fr; gap: 24px; }
  .product-gallery { position: static; }
  .gallery-main { max-width: 480px; margin: 0 auto; }
  .product-trust { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 700px) {
  .product-title { font-size: 1.3rem; }
  .product-price-main { font-size: 2rem; }
  .product-trust { grid-template-columns: repeat(2, 1fr); }
  /* On mobile stack the action buttons */
  .product-actions-row { flex-wrap: wrap; }
  .product-qty-stepper { order: 1; }
  .btn-wishlist-product { order: 2; }
  .btn-add-cart { order: 3; flex: 1 0 100%; }
  .btn-buy-now  { order: 4; flex: 1 0 100%; }
}
@media (max-width: 480px) {
  .product-buy-box { padding: 20px 16px; }
  .reviews-summary { grid-template-columns: 1fr; }
  .tab-pane { padding: 20px 16px; }
}

/* ════════════════════════════════════════════════════════════
   REVIEW FORM
   ════════════════════════════════════════════════════════════ */
.review-form-section {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}
.review-form-title {
  font-size: 1.1rem; font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 22px;
  display: flex; align-items: center;
}

/* ── Alert banners ── */
.review-alert {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; border-radius: 10px;
  font-size: 0.875rem; font-weight: 600;
  margin-bottom: 20px;
}
.review-alert i { font-size: 1rem; flex-shrink: 0; }
.review-alert-success { background: var(--success-bg); color: var(--success); }
.review-alert-error   { background: var(--danger-bg);  color: var(--danger);  }
.review-alert-info    { background: var(--accent-muted); color: var(--accent); }

/* ── Form layout ── */
.review-submit-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 7px; }
.review-form-label {
  font-size: 0.82rem; font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.review-form-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  padding: 11px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
  resize: vertical;
}
.review-form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}
.review-form-input.is-invalid { border-color: var(--danger); }
.review-field-error { font-size: 0.78rem; color: var(--danger); font-weight: 600; }

/* ── Interactive CSS star-picker ── */
.star-picker {
  display: flex;
  flex-direction: row-reverse;
  gap: 4px;
  width: fit-content;
}
.star-picker input[type="radio"] {
  display: none;
}
.star-picker label {
  font-size: 2rem;
  color: var(--border-color);
  cursor: pointer;
  transition: color 0.15s, transform 0.15s;
  line-height: 1;
}
/* Hover: fill from right to current */
.star-picker label:hover,
.star-picker label:hover ~ label { color: var(--warning); transform: scale(1.15); }
/* Checked state: fill all stars up to the checked one */
.star-picker input:checked ~ label { color: var(--warning); }

/* ── Submit button ── */
.review-submit-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  background: var(--gradient-accent);
  color: #fff; border: none;
  border-radius: 10px;
  padding: 13px 28px;
  font-size: 0.9rem; font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.35);
  align-self: flex-start;
}
.review-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(var(--accent-rgb), 0.5);
}
.review-submit-btn:active { transform: translateY(0); box-shadow: none; }

/* ── Guest login prompt ── */
.review-login-prompt {
  display: flex; flex-direction: column; align-items: center;
  gap: 14px; text-align: center;
  padding: 36px 24px;
  background: var(--bg-elevated);
  border: 1px dashed var(--border-color);
  border-radius: 14px;
  color: var(--text-muted);
}
.review-login-prompt i { color: var(--accent); opacity: 0.6; }
.review-login-prompt p { margin: 0; font-size: 0.92rem; color: var(--text-secondary); }
.review-login-prompt a { color: var(--accent); font-weight: 700; text-decoration: none; }
.review-login-prompt a:hover { text-decoration: underline; }