/* ========================================
   Layout
   ======================================== */

/* ---------- Page Layout ---------- */
.page-wrapper {
  padding-top: var(--header-height);
}

.main-content {
  padding: var(--space-4xl) 0;
}

/* ---------- Section Spacing ---------- */
.section {
  padding: var(--space-4xl) 0;
}

.section-gray {
  background: var(--color-bg-dark);
}

/* ---------- Grid Layouts ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

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

.grid-6 {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-lg);
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

/* News Grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

/* ---------- Two Column Layout ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.two-col-reverse {
  direction: rtl;
}

.two-col-reverse > * {
  direction: ltr;
}

.two-col-image {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
}

.two-col-image img {
  width: 100%;
  height: auto;
}

.two-col-image::before {
  content: '';
  position: absolute;
  top: var(--space-xl);
  left: var(--space-xl);
  right: calc(-1 * var(--space-xl));
  bottom: calc(-1 * var(--space-xl));
  border: 2px solid var(--color-gold);
  border-radius: 8px;
  z-index: -1;
}

.two-col-content {
  padding: var(--space-xl) 0;
}

.two-col-label {
  font-family: var(--font-heading-en);
  font-size: 0.8rem;
  color: var(--color-gold);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.two-col-title {
  font-family: var(--font-heading-cn);
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.two-col-desc {
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ---------- Sidebar Layout ---------- */
.layout-sidebar {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-2xl);
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-xl));
  align-self: start;
}

.sidebar-menu {
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.sidebar-menu-item {
  display: block;
  padding: var(--space-md) var(--space-lg);
  font-size: 0.95rem;
  color: var(--color-text);
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
}

.sidebar-menu-item:hover,
.sidebar-menu-item.active {
  background: var(--color-bg-dark);
  color: var(--color-gold);
  border-left-color: var(--color-gold);
}

.sidebar-contact {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.sidebar-contact-title {
  font-family: var(--font-heading-cn);
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.sidebar-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.sidebar-contact-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-gold);
  stroke-width: 1.5;
  fill: none;
  flex-shrink: 0;
  margin-top: 3px;
}

/* ---------- Contact Layout ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
}

.contact-info {
  padding: var(--space-2xl);
  background: var(--color-text);
  border-radius: 8px;
  color: var(--color-white);
}

.contact-info-title {
  font-family: var(--font-heading-cn);
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
}

.contact-info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 169, 98, 0.2);
  border-radius: 50%;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-gold);
  stroke-width: 1.5;
  fill: none;
}

.contact-info-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-xs);
}

.contact-info-value {
  font-size: 0.95rem;
}

.contact-form-wrapper {
  background: var(--color-white);
  padding: var(--space-2xl);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
}

.contact-form-title {
  font-family: var(--font-heading-cn);
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
}

/* ---------- Product Detail Layout ---------- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.product-gallery {
  position: sticky;
  top: calc(var(--header-height) + var(--space-xl));
}

.product-main-image {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  margin-bottom: var(--space-md);
}

.product-main-image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.product-thumbnail {
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.product-thumbnail.active,
.product-thumbnail:hover {
  border-color: var(--color-gold);
}

.product-thumbnail img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-info {
  padding: var(--space-xl) 0;
}

.product-category {
  font-size: 0.8rem;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--space-md);
}

.product-title {
  font-family: var(--font-heading-cn);
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.product-desc {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.product-meta {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.product-meta-item {
  display: flex;
  padding: var(--space-sm) 0;
  font-size: 0.9rem;
}

.product-meta-label {
  width: 100px;
  color: var(--color-text-light);
}

.product-meta-value {
  color: var(--color-text);
}

/* ---------- News Article Layout ---------- */
.article {
  max-width: 800px;
  margin: 0 auto;
}

.article-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.article-category {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-gold);
  color: var(--color-white);
  font-size: 0.75rem;
  border-radius: 20px;
  margin-bottom: var(--space-md);
}

.article-title {
  font-family: var(--font-heading-cn);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: var(--space-md);
}

.article-meta {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.article-content {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
}

.article-content p {
  margin-bottom: 1.5em;
}

.article-content h3 {
  font-family: var(--font-heading-cn);
  margin: 2em 0 1em;
}

.article-content img {
  border-radius: 8px;
  margin: 2em 0;
}

.article-share {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.article-share-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Related Articles */
.related-articles {
  margin-top: var(--space-3xl);
}

.related-title {
  font-family: var(--font-heading-cn);
  font-size: 1.25rem;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-gold);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

.breadcrumb-separator {
  color: var(--color-border);
}

/* ---------- Filter Bar ---------- */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.filter-tags {
  display: flex;
  gap: var(--space-sm);
}

.filter-result {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-text);
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  padding-right: var(--space-xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.footer-logo-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  border-radius: 4px;
}

.footer-logo-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-white);
}

.footer-logo-text {
  font-family: var(--font-heading-cn);
  font-size: 1.125rem;
}

.footer-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}

.footer-title {
  font-family: var(--font-heading-cn);
  font-size: 1rem;
  margin-bottom: var(--space-lg);
  color: var(--color-white);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-link {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-gold);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-md);
}

.footer-contact-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-gold);
  stroke-width: 1.5;
  fill: none;
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer-social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-gold);
}

.footer-social-link svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-white);
  stroke-width: 1.5;
  fill: none;
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-link {
  color: rgba(255,255,255,0.5);
  transition: color var(--transition-fast);
}

.footer-bottom-link:hover {
  color: var(--color-gold);
}

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: span 2;
    padding-right: 0;
  }
}

@media (max-width: 992px) {
  .grid-4,
  .grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .two-col-reverse {
    direction: ltr;
  }

  .two-col-image::before {
    display: none;
  }

  .layout-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .sidebar-menu {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .sidebar-menu-item {
    border-left: none;
    border-bottom: 3px solid transparent;
    padding: var(--space-sm) var(--space-md);
  }

  .sidebar-menu-item:hover,
  .sidebar-menu-item.active {
    border-bottom-color: var(--color-gold);
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .product-detail {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .product-gallery {
    position: static;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }

  .main-content {
    padding: var(--space-2xl) 0;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

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

  .two-col-title {
    font-size: 1.5rem;
  }

  .contact-info {
    padding: var(--space-lg);
  }

  .contact-form-wrapper {
    padding: var(--space-lg);
  }
}