/* products.css */

/* ===========================================
   产品中心顶部 Banner
   =========================================== */
.products-page-hero {
  min-height: 500px;
  padding-bottom: 80px;
  padding-top: calc(var(--header-h) + 60px);
}

.products-page-hero .page-hero-bg {
  background-size: contain;
  background-position: center center;
}

/* ===========================================
   产品中心主布局
   =========================================== */
.products-section {
  background: var(--c-off-white);
}

.products-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

/* ===========================================
   左侧：产品分类侧边栏
   =========================================== */
.products-sidebar {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.sidebar-header {
  padding-bottom: 16px;
  border-bottom: 2px solid var(--c-gold);
  margin-bottom: 20px;
}

.sidebar-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-dark);
  margin: 0;
}

.category-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.category-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--c-gray-50);
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}

.category-item:hover {
  background: var(--c-gray-100);
  border-color: var(--c-gray-200);
}

.category-item.active {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: var(--c-white);
}

.category-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.category-name {
  font-size: 0.88rem;
  font-weight: 500;
  flex-grow: 1;
}

.category-count {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--c-gray-200);
  border-radius: 100px;
  color: var(--c-text-light);
}

.category-item.active .category-count {
  background: var(--c-gold);
  color: var(--c-dark);
}

/* ===========================================
   子菜单
   =========================================== */
.category-item.has-submenu {
  position: relative;
  padding-right: 36px;
}

.submenu-arrow {
  position: absolute;
  right: 14px;
  font-size: 0.7rem;
  transition: transform 0.25s ease;
  pointer-events: none;
}

.category-item.has-submenu.open .submenu-arrow {
  transform: rotate(90deg);
}

.submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.submenu.open {
  max-height: 300px;
}

.submenu-item {
  display: flex;
  align-items: center;
  padding: 10px 16px 10px 44px;
  background: transparent;
  border: none;
  border-left: 2px solid var(--c-gray-100);
  margin-left: 18px;
  cursor: pointer;
  transition: var(--transition);
  width: calc(100% - 18px);
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--c-text-light);
}

.submenu-item:hover {
  background: var(--c-gray-50);
  color: var(--c-dark);
}

.submenu-item.active {
  background: var(--c-dark);
  border-left-color: var(--c-gold);
  color: var(--c-white);
}

.submenu-name {
  font-weight: 500;
}

.sidebar-help {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--c-gray-100);
  text-align: center;
}

.sidebar-help p {
  font-size: 0.85rem;
  color: var(--c-text-light);
  margin-bottom: 12px;
}

/* ===========================================
   右侧：产品主区域
   =========================================== */
.products-main {
  min-height: 400px;
}

.products-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-gray-200);
}

.products-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-dark);
  margin: 0 0 8px 0;
}

.products-subtitle {
  font-size: 0.9rem;
  color: var(--c-text-light);
  margin: 0;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ===========================================
   产品卡片（紧凑型）
   =========================================== */
.product-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: transform 0.3s, box-shadow 0.3s, opacity 0.4s, border-color 0.3s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-gold);
}

.product-card.hidden {
  display: none;
}

/* 卡片图片区域 */
.card-image {
  position: relative;
  height: 200px;
  background: var(--c-gray-100);
  overflow: hidden;
}

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

.product-card:hover .card-image img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 100px;
  z-index: 2;
}

.card-badge.new {
  background: var(--c-gold);
  color: var(--c-dark);
}

.card-badge-15w {
  background: #e84d1c;
  color: #fff;
}

.card-badge-300w {
  background: #e84d1c;
  color: #fff;
}

.card-badge-20w {
  background: #e84d1c;
  color: #fff;
}

.card-badge-60w {
  background: #e84d1c;
  color: #fff;
}

.card-badge-60w80w {
  background: #e84d1c;
  color: #fff;
}

/* 卡片内容区域 */
.card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-category {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-gold-dark);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-dark);
  margin: 0;
  line-height: 1.3;
  text-align: center;
}

.card-tagline {
  font-size: 0.85rem;
  color: var(--c-text-light);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-specs {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--c-gray-100);
}

.spec-item {
  font-size: 0.8rem;
  color: var(--c-text-light);
}

.spec-item strong {
  color: var(--c-dark);
  font-weight: 600;
}

/* 卡片底部 */
.card-footer {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.btn-view-details {
  flex: 1;
  padding: 10px 16px;
  background: var(--c-gold-dark);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
  text-decoration: none;
}

.btn-view-details:hover {
  background: #b45309;
}

.btn-inquiry {
  flex: 1;
  padding: 10px 16px;
  background: var(--c-gold);
  color: var(--c-dark);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
  text-decoration: none;
}

.btn-inquiry:hover {
  background: var(--c-gold-dark);
}

/* ===========================================
   空状态
   =========================================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  display: none;
}

.empty-state.show {
  display: block;
}

.empty-icon {
  font-size: 4rem;
  opacity: 0.3;
  margin-bottom: 16px;
}

.empty-text {
  font-size: 1.1rem;
  color: var(--c-text-light);
}

/* ===========================================
   响应式设计
   =========================================== */
@media (max-width: 1024px) {
  .products-layout {
    grid-template-columns: 240px 1fr;
    gap: 24px;
  }

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

@media (max-width: 768px) {
  .products-layout {
    grid-template-columns: 1fr;
  }

  .products-sidebar {
    position: static;
    order: -1;
  }

  .category-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .category-item {
    flex: 1;
    min-width: 140px;
    justify-content: center;
    padding: 12px 14px;
  }

  .category-icon {
    display: none;
  }

  .category-count {
    display: none;
  }

  .submenu-arrow {
    display: none;
  }

  .category-item.has-submenu {
    padding-right: 14px;
  }

  .submenu {
    flex-basis: 100%;
    max-height: 0;
  }

  .submenu.open {
    max-height: 500px;
  }

  .submenu-item {
    margin-left: 0;
    border-left: none;
    border-top: 1px solid var(--c-gray-100);
    padding: 10px 14px;
    justify-content: center;
    width: 100%;
  }

  .sidebar-help {
    display: none;
  }
}

@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card-image {
    height: 180px;
  }

  .card-content {
    padding: 16px;
  }

  .card-footer {
    flex-direction: column;
    gap: 8px;
  }

  .btn-view-details,
  .btn-inquiry {
    width: 100%;
  }
}