/* ============================================================
   Product Detail Page  (.pd-*)
   Modern two-column layout with gallery, specs, tabs
   ============================================================ */

/* ── Breadcrumb ── */
.pd-breadcrumb {
  padding: 0.75rem 0 1.25rem;
}

.pd-breadcrumb .breadcrumb {
  margin: 0;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.pd-breadcrumb .breadcrumb-item a {
  color: var(--cdt-primary);
  text-decoration: none;
}

.pd-breadcrumb .breadcrumb-item a:hover {
  text-decoration: underline;
}

.pd-breadcrumb .breadcrumb-item.active {
  color: var(--cdt-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}

/* ── Main grid ── */
.pd-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: 2.5rem;
  align-items: start;
  margin-bottom: 3rem;
}

@media (max-width: 767.98px) {
  .pd-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .pd-gallery {
  position: static !important;
  }

  .pd-cta {
    flex-direction: column;
  }

  .pd-cta__btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Gallery ── */
.pd-gallery {
  position: sticky;
  top: 1.5rem;
}

.pd-gallery__main {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--cdt-border);
  background: #fff;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  position: relative;
}

.pd-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1.25rem;
  mix-blend-mode: multiply;
  transition: opacity 0.3s ease;
}

.pd-gallery__badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--cdt-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  border-radius: 2rem;
}

.pd-gallery__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(44, 156, 59, 0.08), rgba(15, 23, 40, 0.05));
  color: var(--cdt-primary);
  font-size: 5rem;
  font-weight: 800;
  user-select: none;
}

.pd-gallery__thumbs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pd-gallery__thumb {
  width: 68px;
  height: 68px;
  border-radius: 0.5rem;
  border: 2px solid var(--cdt-border);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s ease;
  background: #fff;
  padding: 4px;
  flex-shrink: 0;
}

.pd-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pd-gallery__thumb:hover,
.pd-gallery__thumb.is-active {
  border-color: var(--cdt-primary);
}

/* ── Info panel ── */
.pd-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pd-info__category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cdt-primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-decoration: none;
}

.pd-info__category:hover {
  text-decoration: underline;
}

.pd-info__name {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--cdt-secondary);
  margin: 0;
}

.pd-info__price-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.pd-info__price {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--cdt-primary);
  line-height: 1;
}

.pd-info__price--call {
  font-size: 1.25rem;
  color: var(--cdt-muted);
  font-weight: 600;
}

.pd-info__stock {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cdt-primary);
  background: var(--cdt-primary-soft);
  padding: 0.3rem 0.75rem;
  border-radius: 2rem;
}

.pd-info__stock::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cdt-primary);
  flex-shrink: 0;
}

.pd-info__short-desc {
  font-size: 0.95rem;
  color: var(--cdt-muted);
  line-height: 1.65;
  margin: 0;
}

/* ── Quick specs ── */
.pd-specs-quick {
  border: 1px solid var(--cdt-border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.pd-specs-quick__row {
  display: flex;
  border-bottom: 1px solid var(--cdt-border);
}

.pd-specs-quick__row:last-child {
  border-bottom: none;
}

.pd-specs-quick__label {
  flex: 0 0 38%;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cdt-text);
  background: var(--cdt-bg);
  border-right: 1px solid var(--cdt-border);
}

.pd-specs-quick__value {
  flex: 1;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--cdt-muted);
}

/* ── CTA buttons ── */
.pd-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pd-cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: 0.6rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.pd-cta__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.pd-cta__btn--primary {
  background: var(--cdt-primary);
  color: #fff;
}

.pd-cta__btn--primary:hover {
  background: var(--cdt-primary-dark);
  color: #fff;
}

.pd-cta__btn--zalo {
  background: #0068ff;
  color: #fff;
}

.pd-cta__btn--zalo:hover {
  background: #0058d9;
  color: #fff;
}

.pd-cta__btn--cart {
  background: var(--cdt-bg);
  color: var(--cdt-text);
  border: 1px solid var(--cdt-border);
}

.pd-cta__btn--cart:hover {
  background: #fff;
}

/* ── Tabs section ── */
.pd-tabs {
  margin-bottom: 3rem;
}

.pd-tabs__nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--cdt-border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.pd-tabs__nav::-webkit-scrollbar {
  display: none;
}

.pd-tabs__tab {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cdt-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.pd-tabs__tab.is-active {
  color: var(--cdt-primary);
  border-bottom-color: var(--cdt-primary);
}

.pd-tabs__tab:hover {
  color: var(--cdt-primary);
}

.pd-tabs__panel {
  display: none;
}

.pd-tabs__panel.is-active {
  display: block;
}

/* ── Rich content inside tabs ── */
.pd-rich-content {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--cdt-text);
}

.pd-rich-content h2,
.pd-rich-content h3,
.pd-rich-content h4 {
  font-weight: 700;
  color: var(--cdt-secondary);
  margin-top: 1.5em;
}

.pd-rich-content ul,
.pd-rich-content ol {
  padding-left: 1.5rem;
}

.pd-rich-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.pd-rich-content table th,
.pd-rich-content table td {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--cdt-border);
  text-align: left;
}

.pd-rich-content table th {
  background: var(--cdt-bg);
  font-weight: 600;
}

.pd-rich-content table tr:nth-child(even) td {
  background: #fafafa;
}

.pd-rich-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
}

/* ── Empty content placeholder ── */
.pd-empty-content {
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--cdt-muted);
  font-size: 0.9rem;
  background: var(--cdt-bg);
  border-radius: 0.75rem;
  border: 1px dashed var(--cdt-border);
}

/* ── Related products ── */
.pd-related__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cdt-secondary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--cdt-border);
  position: relative;
}

.pd-related__title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 3rem;
  height: 2px;
  background: var(--cdt-primary);
}

.pd-related__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

@media (max-width: 991.98px) {
  .pd-related__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 575.98px) {
  .pd-related__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}