/* ============================================
   Products Page Styles
   ============================================ */

/* --- Page Hero --- */
.page-hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0F1629 0%, #1a2744 40%, #0a3d8f 100%);
  z-index: 0;
}

.page-hero__bg::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.12) 0%, transparent 70%);
}

.page-hero__content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.page-hero__title {
  font-size: var(--fs-5xl);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.page-hero__subtitle {
  font-size: var(--fs-lg);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.5);
}

.page-hero__breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--duration);
}

.page-hero__breadcrumb a:hover {
  color: #fff;
}

.page-hero__breadcrumb span {
  color: var(--accent);
}

/* --- Quick Jump --- */
.quick-jump {
  position: sticky;
  top: 64px;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.quick-jump__inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.quick-jump__inner::-webkit-scrollbar {
  display: none;
}

.quick-jump__label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.quick-jump__links {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.quick-jump__link {
  padding: 6px 16px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--duration) var(--ease);
  border: 1px solid transparent;
}

.quick-jump__link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.quick-jump__link.active {
  background: var(--primary);
  color: #fff;
}

/* --- Tech Banner --- */
.tech-banner {
  padding: var(--space-2xl) 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.tech-banner__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.tech-banner__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.tech-banner__icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.tech-banner__item strong {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 2px;
}

.tech-banner__item p {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.4;
}

/* --- Product Sections --- */
.product-section {
  padding: var(--space-4xl) 0;
}

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

.product-section__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border);
}

.product-section__icon {
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-section__title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 8px;
}

.product-section__desc {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 700px;
}

.product-section__view-all {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--primary);
  transition: color var(--duration);
}

.product-section__view-all:hover {
  color: var(--primary-dark);
}

/* Product Section Hero Images */
.product-section__hero-image {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.product-section__hero-image img {
  width: 100%;
  height: 280px;
  object-fit: contain;
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.product-section__hero-image img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* --- Product Subsections --- */
.product-subsection {
  margin-bottom: var(--space-2xl);
}

.product-subsection__title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.product-subsection__badge {
  display: inline-flex;
  padding: 4px 14px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #fff;
}

.product-subsection__badge--heavy { background: #dc2626; }
.product-subsection__badge--next { background: #2563eb; }
.product-subsection__badge--light { background: #7c3aed; }
.product-subsection__badge--baseline { background: #6b7280; }

/* --- Expandable Product Items --- */
.product-list {
  display: grid;
  gap: var(--space-md);
}

.product-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}

.product-section--alt .product-item {
  background: #fff;
}

.product-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.product-item__header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  user-select: none;
}

.product-item__visual {
  width: 56px;
  height: 56px;
  min-width: 56px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-item__visual--heavy {
  background: #FEF2F2;
  color: #dc2626;
}

.product-item__info {
  flex: 1;
  min-width: 0;
}

.product-item__info h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 4px;
}

.product-item__info p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.product-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.product-item__tags span {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 10px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
}

.product-item__toggle {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
}

.product-item__toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-light);
}

.product-item.expanded .product-item__toggle {
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.product-item__details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
  padding: 0 var(--space-xl);
}

.product-item.expanded .product-item__details {
  max-height: 600px;
  padding: 0 var(--space-xl) var(--space-xl);
}

.product-item__specs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
}

.spec {
  background: var(--bg-alt);
  padding: var(--space-md);
  border-radius: var(--radius-md);
}

.spec-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.spec-value {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--secondary);
}

.product-item__features {
  margin-bottom: var(--space-lg);
}

.product-item__features h5 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: var(--space-sm);
}

.product-item__features ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.product-item__features li {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}

.product-item__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* --- Compact Product Grid --- */
.product-grid-compact {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md);
}

.product-compact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
  display: flex;
  flex-direction: column;
}

.product-section--alt .product-compact-card {
  background: #fff;
}

.product-compact-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-compact-card h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 4px;
}

.product-compact-card p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  flex: 1;
}

.product-compact-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  margin-bottom: var(--space-md);
  align-self: flex-start;
}

.product-compact-link {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--duration);
}

.product-compact-link:hover {
  color: var(--primary-dark);
}

/* --- Accessories CTA --- */
.accessories-cta {
  text-align: center;
  padding: var(--space-2xl);
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.accessories-cta p {
  color: var(--text-secondary);
  font-size: var(--fs-lg);
  margin-bottom: var(--space-lg);
}

/* --- Nav dark variant for products page --- */
.nav--dark {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: var(--shadow-md);
}

.nav--dark .nav__link {
  color: var(--text);
}

.nav--dark .nav__link:hover,
.nav--dark .nav__link.active {
  color: var(--primary);
}

.nav--dark .nav__link--cta {
  background: var(--primary);
  color: #fff !important;
}

.nav--dark .nav__logo-mark {
  background: var(--primary);
  color: #fff;
}

.nav--dark .nav__logo-text {
  color: var(--secondary);
}

.nav--dark .nav__toggle span {
  background: var(--secondary);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .tech-banner__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-section__header {
    flex-direction: column;
    gap: var(--space-md);
  }
}

@media (max-width: 768px) {
  .page-hero__title {
    font-size: var(--fs-3xl);
  }

  .tech-banner__grid {
    grid-template-columns: 1fr;
  }

  .product-grid-compact {
    grid-template-columns: 1fr;
  }

  .product-item__header {
    padding: var(--space-md);
  }

  .product-item__visual {
    display: none;
  }

  .product-item__specs {
    grid-template-columns: 1fr 1fr;
  }

  .product-item__features ul {
    grid-template-columns: 1fr;
  }

  .product-item.expanded .product-item__details {
    padding: 0 var(--space-md) var(--space-md);
  }

  .quick-jump {
    top: 56px;
  }
}