/* ==========================================================================
   Gurock Equipments — Product Detail Page Styles
   Extends style.css (tokens, .container, .btn, .section-*, [data-reveal])
   ========================================================================== */

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* ---------------- Gallery ---------------- */

.product-gallery-main {
  position: relative;
  width: 100%;
  height: 460px;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(135deg, #EFEFEF, #E2E2E2);
  box-shadow: 0 20px 44px -22px rgba(17, 17, 17, 0.3);
  cursor: zoom-in;
}

.product-gallery-zoom {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s var(--ease);
}

.product-gallery-main:hover .product-gallery-zoom {
  transform: scale(1.15);
}

.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 16px;
}

.product-thumb {
  height: 90px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid transparent;
  background: #EFEFEF;
  padding: 0;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-thumb:hover {
  transform: translateY(-3px);
}

.product-thumb.is-active {
  border-color: var(--color-gold);
}

@media (max-width: 1000px) {
  .product-detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-gallery-main { height: 360px; }
}

@media (max-width: 480px) {
  .product-gallery-thumbs { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .product-thumb { height: 60px; }
}

/* ---------------- Info panel ---------------- */

.product-category-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  background: #FCEFD3;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.product-info h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  color: var(--color-black);
  margin: 0 0 14px;
}

.product-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0 0 28px;
}

.product-features {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.product-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-black);
}

.product-features svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  stroke: var(--color-gold);
}

.product-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.product-share {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-muted);
}

.product-share a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.product-share svg {
  width: 15px;
  height: 15px;
  color: var(--color-black);
}

.product-share a:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  transform: translateY(-2px);
}

/* ---------------- Tabs ---------------- */

.product-tabs-section {
  background: var(--bg-light);
}

.product-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.product-tab {
  padding: 14px 26px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-muted);
  border-bottom: 3px solid transparent;
  background: transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
  margin-bottom: -1px;
}

.product-tab:hover {
  color: var(--color-black);
}

.product-tab.is-active {
  color: var(--color-gold-dark);
  border-bottom-color: var(--color-gold);
}

.product-tab-panel {
  display: none;
  animation: fadeInTab 0.4s var(--ease);
}

.product-tab-panel.is-active {
  display: block;
}

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

.product-tab-panel p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--color-muted);
  max-width: 900px;
  margin: 0;
}

.product-specs-table {
  width: 100%;
  max-width: 720px;
  border-collapse: collapse;
  background: #FFFFFF;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 12px 30px -22px rgba(17, 17, 17, 0.2);
}

.product-specs-table tr:nth-child(even) {
  background: var(--bg-light);
}

.product-specs-table th,
.product-specs-table td {
  padding: 16px 24px;
  font-size: 14.5px;
  text-align: left;
}

.product-specs-table th {
  font-weight: 600;
  color: var(--color-black);
  width: 45%;
  border-right: 1px solid var(--color-border);
}

.product-specs-table td {
  color: var(--color-muted);
}

.product-applications-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 800px;
}

.product-applications-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-black);
}

.product-applications-list svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  stroke: var(--color-gold);
}

@media (max-width: 600px) {
  .product-applications-list { grid-template-columns: 1fr; }
}

/* ---------------- Related products ---------------- */

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 52px;
}

.related-card {
  background: #FFFFFF;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px -20px rgba(17, 17, 17, 0.2);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 44px -18px rgba(17, 17, 17, 0.28);
}

.related-media {
  height: 200px;
  background-size: cover;
  background-position: center;
  background-color: #E2E2E2;
  transition: transform 0.5s var(--ease);
}

.related-card:hover .related-media {
  transform: scale(1.06);
}

.related-body {
  padding: 22px 24px 26px;
}

.related-category {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin-bottom: 8px;
}

.related-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-black);
  margin: 0 0 8px;
}

.related-body p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--color-muted);
  margin: 0 0 18px;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-gold-dark);
}

.related-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease);
}

.related-link:hover svg {
  transform: translateX(4px);
}

@media (max-width: 900px) {
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .related-grid { grid-template-columns: 1fr; }
}