/* ============================================
   PRODUCT DETAIL PAGE
   Clipsal-inspired layout with YELE branding
============================================ */

/* Product Header Bar */
.pd-header-bar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 0;
  margin-top: 60px;
}
.pd-header-bar__title {
  font-size: 0.8125rem;
  color: var(--text-2);
}
.pd-header-bar__title strong {
  color: var(--text);
}

/* Sticky Tab Navigation */
.pd-tabs {
  background: var(--white);
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 56px;
  z-index: 100;
}
.pd-tabs__inner {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.pd-tabs__inner::-webkit-scrollbar { display: none; }
.pd-tabs__tab {
  display: block;
  padding: 0.85rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.25s;
}
.pd-tabs__tab:hover {
  color: var(--accent);
}
.pd-tabs__tab--active {
  color: var(--text);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-2);
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 0.5rem; color: var(--border-dark); }
.breadcrumb span { color: var(--text); font-weight: 500; }

/* ===== OVERVIEW ===== */
.pd-overview {
  padding: 2.5rem 0 3rem;
  background: var(--white);
}
.pd-overview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

/* Series tag */
.pd-overview__series {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.pd-overview__series-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
}
.pd-overview__series-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
}

/* Title */
.pd-overview__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.pd-overview__subtitle {
  font-size: 1rem;
  color: var(--text-2);
  margin-bottom: 1.25rem;
}

/* Item number */
.pd-overview__item-no,
.pd-overview__ean {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}
.pd-overview__item-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
}
.pd-overview__item-value {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--text-2);
}

/* Product Selector */
.pd-selector {
  margin: 1.25rem 0;
}
.pd-selector__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: all 0.25s;
}
.pd-selector__btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.pd-selector__btn .fa-external-link-alt {
  font-size: 0.625rem;
  color: var(--text-3);
}

/* Price */
.pd-price {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}
.pd-price__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
}
.pd-price__value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text);
}
.pd-price__gst {
  font-size: 0.75rem;
  color: var(--text-3);
}
.pd-price__note {
  font-size: 0.8125rem;
  color: var(--text-2);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}
.pd-price__note i { color: var(--accent); margin-top: 0.15rem; }
.pd-price__note a { color: var(--accent); font-weight: 500; }

/* Actions */
.pd-actions {
  display: flex;
  gap: 0.75rem;
}
.btn--outline-dark {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}
.btn--outline-dark:hover {
  border-color: var(--text);
  transform: translateY(-1px);
}

/* ===== GALLERY ===== */
.pd-gallery__main {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  position: relative;
  aspect-ratio: 6/5;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
}
.pd-gallery__main img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
}
.pd-gallery__nav {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  border-radius: 100px;
  padding: 0.25rem 0.5rem;
}
.pd-gallery__nav-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 0.625rem;
  color: var(--text-2);
  transition: all 0.2s;
  cursor: pointer;
  background: white;
}
.pd-gallery__nav-btn:hover {
  border-color: var(--text);
  color: var(--text);
}
.pd-gallery__counter {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-2);
  min-width: 32px;
  text-align: center;
}
.pd-gallery__thumbs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.pd-gallery__thumb {
  width: 64px;
  height: 64px;
  border: 2px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.25s;
  background: var(--bg);
  padding: 4px;
}
.pd-gallery__thumb img { width: 100%; height: 100%; object-fit: contain; }
.pd-gallery__thumb:hover { border-color: var(--text-3); }
.pd-gallery__thumb--active { border-color: var(--accent); }

.pd-gallery__certs {
  display: flex;
  gap: 0.5rem;
}
.pd-gallery__cert {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--teal);
  background: var(--teal-soft);
}

/* ===== SECTION TITLES ===== */
.pd-section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* ===== SPECIFICATIONS ===== */
.pd-specs {
  padding: 3rem 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.pd-specs__group {
  margin-bottom: 2rem;
}
.pd-specs__group:last-child { margin-bottom: 0; }
.pd-specs__group-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.pd-specs__table {
  display: flex;
  flex-direction: column;
}
.pd-specs__table--grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
}
.pd-specs__row {
  display: flex;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--bg-alt);
  gap: 1.5rem;
}
.pd-specs__table--grid .pd-specs__row {
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--bg-alt);
}
.pd-specs__key {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-3);
  min-width: 200px;
  flex-shrink: 0;
}
.pd-specs__val {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text);
}
.pd-specs__table--grid .pd-specs__key {
  font-size: 0.75rem;
  min-width: auto;
}
.pd-specs__table--grid .pd-specs__val {
  font-size: 0.875rem;
  font-weight: 600;
}

/* ===== FEATURES ===== */
.pd-features {
  padding: 3rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.pd-features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.pd-features__item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}
.pd-features__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 1rem;
}
.pd-features__item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.pd-features__item p {
  font-size: 0.8125rem;
  color: var(--text-2);
  line-height: 1.7;
}

/* ===== DOCUMENTS ===== */
.pd-docs {
  padding: 3rem 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.pd-docs__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.pd-docs__card {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all 0.3s var(--ease);
}
.pd-docs__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
}
.pd-docs__card-type {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 0.75rem;
  align-self: flex-start;
}
.pd-docs__card-preview {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--text-3);
  margin-bottom: 0.75rem;
  background: var(--bg);
  border-radius: var(--r-sm);
}
.pd-docs__card h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.pd-docs__card p {
  font-size: 0.75rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 0.75rem;
}
.pd-docs__meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.pd-docs__dl {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 0.2s;
}
.pd-docs__dl:hover { opacity: 0.7; }

/* ===== PRODUCT SUPPORT ===== */
.pd-support {
  padding: 3rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.pd-support__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.pd-support__card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  transition: all 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.pd-support__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
  border-color: var(--accent);
}
.pd-support__card > i {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}
.pd-support__card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.pd-support__card p {
  font-size: 0.8125rem;
  color: var(--text-2);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1rem;
}
.pd-support__link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.pd-support__link i { transition: transform 0.3s; }
.pd-support__card:hover .pd-support__link i { transform: translateX(4px); }

/* ===== RELATED PRODUCTS ===== */
.pd-related {
  padding: 3rem 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.pd-related__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.pd-related__card {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.3s var(--ease);
}
.pd-related__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
  border-color: var(--accent);
}
.pd-related__img {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  height: 160px;
}
.pd-related__img img {
  max-width: 80%;
  max-height: 100%;
  object-fit: contain;
}
.pd-related__info {
  padding: 1rem 1.25rem 1.25rem;
}
.pd-related__cat {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.25rem;
  display: block;
}
.pd-related__info h4 {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.35rem;
}
.pd-related__sku {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  margin-bottom: 0.5rem;
}
.pd-related__price {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .pd-overview__grid { grid-template-columns: 1fr; gap: 2rem; }
  .pd-overview__info { order: 2; }
  .pd-gallery { order: 1; }
  .pd-specs__table--grid { grid-template-columns: 1fr 1fr; }
  .pd-docs__grid { grid-template-columns: repeat(2, 1fr); }
  .pd-related__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .pd-specs__table--grid { grid-template-columns: 1fr; }
  .pd-features__grid { grid-template-columns: 1fr; }
  .pd-support__grid { grid-template-columns: 1fr; }
  .pd-docs__grid { grid-template-columns: 1fr; }
  .pd-related__grid { grid-template-columns: 1fr 1fr; }
  .pd-actions { flex-direction: column; }
  .pd-overview__title { font-size: 1.375rem; }
}
@media (max-width: 480px) {
  .pd-related__grid { grid-template-columns: 1fr; }
}