/* ===================================================
   Product Category Pages — V2 Visual-Heavy Design
   =================================================== */

/* --- Main Layout: Grid Left + Sidebar Right --- */
.products-layout {
  display: flex;
  gap: var(--space-2xl);
  align-items: flex-start;
}

.products-grid-area {
  flex: 1;
  min-width: 0;
}

/* --- Category Sidebar (Right) --- */
.products-sidebar {
  width: 260px;
  flex-shrink: 0;
  position: sticky;
  top: 100px;
}

.products-sidebar__title {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

.category-filter-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.category-filter-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
}

.category-filter-btn:hover {
  background: rgba(0, 51, 102, 0.04);
  color: var(--color-primary);
}

.category-filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

.category-filter-btn__count {
  font-size: 0.7rem;
  font-weight: var(--fw-semibold);
  opacity: 0.6;
  min-width: 22px;
  text-align: center;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
}

.category-filter-btn.active .category-filter-btn__count {
  background: rgba(255, 255, 255, 0.2);
  opacity: 1;
}

/* --- Product Grid --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1.5rem;
}

/* --- Product Card V2 (Image-based) --- */
.product-card-v2 {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  overflow: hidden;
  transition: all 0.3s ease;
  text-decoration: none;
  color: var(--color-text);
}

.product-card-v2:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(0, 51, 102, 0.12);
  border-color: rgba(0, 51, 102, 0.15);
}

.product-card-v2__image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf0 100%);
}

.product-card-v2__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card-v2:hover .product-card-v2__image img {
  transform: scale(1.06);
}

/* Placeholder icon for products without image */
.product-card-v2__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
}

.product-card-v2__image-placeholder svg {
  width: 48px;
  height: 48px;
  stroke: rgba(0, 51, 102, 0.2);
  stroke-width: 1.5;
  fill: none;
}

.product-card-v2__body {
  padding: 1rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.product-card-v2__category {
  font-size: 0.7rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  opacity: 0.7;
}

.product-card-v2__name {
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: var(--fw-bold);
  color: var(--color-heading);
  line-height: 1.35;
}

.product-card-v2__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--color-border);
}

.product-card-v2__link {
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.2s ease;
}

.product-card-v2:hover .product-card-v2__link {
  gap: 0.55rem;
}

.product-card-v2__link svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

/* --- Intro Section --- */
.product-category-intro {
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-2xl);
}

.product-category-intro__desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 700px;
  line-height: 1.7;
}

/* --- Results count bar --- */
.products-result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.products-result-count {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  font-weight: var(--fw-medium);
}

.products-result-count strong {
  color: var(--color-heading);
  font-weight: var(--fw-bold);
}

/* --- No results state --- */
.products-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--color-text-muted);
}

.products-empty__icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.products-empty__text {
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #001a33 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.05) 0%, transparent 50%);
}

.cta-section__content {
  position: relative;
  z-index: 1;
}

.cta-section__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-sm);
}

.cta-section__desc {
  font-size: var(--fs-md);
  opacity: 0.85;
  margin-bottom: var(--space-xl);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .products-layout {
    flex-direction: column-reverse;
  }

  .products-sidebar {
    width: 100%;
    position: static;
  }

  .category-filter-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .category-filter-btn {
    padding: 0.45rem 0.9rem;
    font-size: 0.78rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
  }

  .category-filter-btn__count {
    display: none;
  }
}

@media (max-width: 640px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .product-card-v2__body {
    padding: 0.75rem 1rem 1rem;
  }

  .product-card-v2__name {
    font-size: var(--fs-sm);
  }

  .product-card-v2__footer {
    padding: 0.6rem 1rem;
  }
}

/* ===================================================
   Product Detail Page
   =================================================== */

/* --- Product Header (Two-column) --- */
.pd-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.pd-header__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pd-header__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pd-header__image-placeholder svg {
  width: 80px;
  height: 80px;
  stroke: rgba(0, 51, 102, 0.15);
  stroke-width: 1.2;
  fill: none;
}

.pd-header__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.pd-header__category {
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  opacity: 0.8;
}

.pd-header__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: var(--fw-bold);
  color: var(--color-heading);
  line-height: 1.2;
}

.pd-header__cas {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: rgba(0, 51, 102, 0.06);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
  width: fit-content;
}

.pd-header__cas span {
  color: var(--color-text-muted);
  font-weight: var(--fw-medium);
}

.pd-header__short-desc {
  color: var(--color-text-light);
  line-height: 1.75;
  font-size: var(--fs-base);
}

.pd-header__meta {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.pd-meta-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-sm);
}

.pd-meta-item__icon {
  width: 18px;
  height: 18px;
  stroke: var(--color-primary);
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

.pd-meta-item__label {
  color: var(--color-text-muted);
  min-width: 120px;
}

.pd-meta-item__value {
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
}

/* Document download buttons */
.pd-header__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pd-doc-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.pd-doc-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0, 51, 102, 0.03);
}

.pd-doc-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.pd-doc-btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.pd-doc-btn--primary:hover {
  background: #002a52;
  color: var(--color-white);
}

/* --- Content sections --- */
.pd-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.pd-section:last-of-type {
  border-bottom: none;
}

.pd-section__title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-heading);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pd-section__title-icon {
  width: 22px;
  height: 22px;
  stroke: var(--color-primary);
  stroke-width: 2;
  fill: none;
}

.pd-section__text {
  color: var(--color-text);
  line-height: 1.8;
  font-size: var(--fs-base);
  max-width: 800px;
}

/* --- Specs Table --- */
.pd-specs-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.pd-specs-table tr:nth-child(even) {
  background: rgba(0, 51, 102, 0.02);
}

.pd-specs-table td {
  padding: 0.85rem 1.25rem;
  font-size: var(--fs-sm);
  border-bottom: 1px solid var(--color-border);
}

.pd-specs-table tr:last-child td {
  border-bottom: none;
}

.pd-specs-table td:first-child {
  font-weight: var(--fw-semibold);
  color: var(--color-heading);
  width: 40%;
  background: rgba(0, 51, 102, 0.03);
  border-right: 1px solid var(--color-border);
}

.pd-specs-table td:last-child {
  color: var(--color-text);
}

/* --- Usage Areas Grid --- */
.pd-usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.pd-usage-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  transition: all 0.2s ease;
}

.pd-usage-item:hover {
  border-color: rgba(12, 116, 137, 0.15);
  box-shadow: 0 4px 12px rgba(12, 116, 137, 0.06);
}

.pd-usage-item__icon {
  width: 20px;
  height: 20px;
  stroke: var(--color-primary);
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

.pd-usage-item__text {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-heading);
}

/* --- Packaging Cards --- */
.pd-packaging-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.pd-packaging-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  text-align: center;
  transition: all 0.2s ease;
}

.pd-packaging-card:hover {
  border-color: rgba(0, 51, 102, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 51, 102, 0.08);
}

.pd-packaging-card__icon {
  width: 36px;
  height: 36px;
  stroke: var(--color-primary);
  stroke-width: 1.5;
  fill: none;
}

.pd-packaging-card__name {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-heading);
}

.pd-packaging-card__size {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* --- Related Products --- */
.pd-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

/* --- Responsive Detail --- */
@media (max-width: 768px) {
  .pd-header {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .pd-specs-table td:first-child {
    width: 45%;
  }

  .pd-usage-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pd-packaging-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}