/* ============================================================
   PRODUCTS.CSS — Products 模块
   包含：栏目页 / 列表页 / 详情页
   前缀：product- / category- / detail-
   依赖：common.css
   ============================================================ */

/* ============================================================
   栏目页 — BANNER 通栏图
   ============================================================ */
.page-banner {
  width: 100%;
  height: 380px;
  position: relative;
  overflow: hidden;
  background-color: #0F2E1A;
  background-image: url('/images/banner2.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.35) 90%);
  z-index: 1;
}
.page-banner .banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}
.page-banner .banner-content h1 {
  color: white;
  font-weight: 600;
  font-size: 3rem;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.page-banner .banner-content p {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.3px;
  text-shadow: 0 1px 12px rgba(0,0,0,0.15);
}

/* ============================================================
   栏目页 — 产品类别列表（一行一类别）
   ============================================================ */
.section-category { padding: 72px 0 80px; background: var(--gray-50); }
.category-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 100%;
  margin: 0 auto;
}

.category-row {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 0;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: 0.25s ease;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  align-items: stretch;
  min-height: 220px;
}
.category-row:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--green);
  transform: translateY(-3px);
}

.category-row .cat-img {
  background: #E4EDE7;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  min-height: 220px;
}
.category-row .cat-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.category-row:hover .cat-img img { transform: scale(1.03); }
.category-row .cat-img .fallback {
  font-size: 4rem;
  color: var(--green);
  opacity: 0.25;
}

.category-row .cat-body {
  padding: 32px 30px 32px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.category-row .cat-body h3 {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.category-row:hover .cat-body h3 { color: var(--green); }
.category-row .cat-body p {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 16px;

}
.category-row .cat-body .cat-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--green);
  transition: gap 0.25s;
  margin-top: 4px;
}
.category-row:hover .cat-body .cat-link { gap: 14px; }
.category-row .cat-body .cat-link i { font-size: 0.7rem; transition: 0.25s; }

/* ============================================================
   列表页 — Tab 切换
   ============================================================ */
.section-products-tab { padding: 56px 0 80px; background: var(--gray-50); }

.tab-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}
.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 60px;
  border: 1.5px solid var(--gray-300);
  background: white;
  color: var(--gray-700);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: 0.25s ease;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.tab-btn i { font-size: 0.95rem; color: var(--gray-400); transition: 0.25s; }
.tab-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-light);
  transform: translateY(-2px);
}
.tab-btn:hover i { color: var(--green); }
.tab-btn.active {
  background: var(--green);
  border-color: var(--green);
  color: white;
  box-shadow: 0 6px 24px rgba(29,122,74,0.25);
}
.tab-btn.active i { color: white; }

.tab-panel { display: none; animation: fadeUp 0.45s ease; }
.tab-panel.active { display: block; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-header { text-align: center; margin-bottom: 36px; }
.panel-header h3 {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--gray-800);
  margin-bottom: 6px;
}
.panel-header p {
  font-size: 0.95rem;
  color: var(--gray-400);
  max-width: 820px;
  margin: 0 auto;
}

/* 产品网格：一行三列 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  display: block;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: 0.25s ease;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.product-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.product-card .card-img {
  height: 280px;
  background: #E4EDE7;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.product-card .card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.product-card:hover .card-img img { transform: scale(1.04); }
.product-card .card-img .fallback {
  font-size: 3rem;
  color: var(--green);
  opacity: 0.25;
}
.product-card .card-body { padding: 22px 22px 26px; }
.product-card .card-body h4 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: 6px;
  transition: color 0.2s;
}
.product-card:hover .card-body h4 { color: var(--green); }
.product-card .card-body p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 12px;
}
.product-card .card-body .card-link {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--green);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s;
}
.product-card:hover .card-body .card-link { gap: 12px; }
.product-card .card-body .card-link i { font-size: 0.65rem; transition: 0.25s; }

/* ============================================================
   详情页 — 主区域
   ============================================================ */
    /* ============================================================
       BREADCRUMB
    ============================================================ */
    .breadcrumb-bar {
      background: var(--gray-50);
      border-bottom: 1px solid var(--gray-200);
      padding: 18px 0;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 0.82rem;
      color: var(--gray-400);
      list-style: none;
    }
    .breadcrumb li { display: flex; align-items: center; gap: 8px; }
    .breadcrumb li a {
      color: var(--gray-500);
      transition: 0.15s;
    }
    .breadcrumb li a:hover { color: var(--green); }
    .breadcrumb li i {
      font-size: 0.5rem;
      color: var(--gray-300);
    }
    .breadcrumb li.active { color: var(--green); font-weight: 500; }

.product-detail { padding: 48px 0 0; background: white; }

.detail-top {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 48px;
}

.detail-gallery { display: flex; flex-direction: column; gap: 14px; }
.detail-gallery .main-img {
  width: 100%;
  height: 320px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #E4EDE7;
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: var(--shadow);
}
.detail-gallery .main-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.detail-gallery .main-img .fallback {
  font-size: 4rem;
  color: var(--green);
  opacity: 0.2;
}

.detail-info {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: 0;
}
.detail-info .category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-light);
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 5px 16px;
  border-radius: 40px;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
  width: fit-content;
}
.detail-info .category-badge i { font-size: 0.7rem; }
.detail-info h1 {
  font-size: 2rem;
  font-weight: 500;
  color: var(--gray-800);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.35;
}
.detail-info .short-desc {
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.9;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--gray-200);
}
.detail-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 详细介绍 */
.detail-content { width: 100%; padding-bottom: 56px; }
.detail-content .content-block { margin-bottom: 0; }
.detail-content h2 {
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--green-light);
  display: flex;
  align-items: center;
  gap: 12px;
}
.detail-content h2 i { font-size: 1.2rem; color: var(--green); }
.detail-content p {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 16px;
}
.detail-content p:last-child { margin-bottom: 0; }

/* 询盘表单 */
.section-inquiry {
  padding: 64px 0 72px;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}
.inquiry-header { text-align: center; margin-bottom: 40px; }
.inquiry-header h2 {
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--gray-800);
  margin-bottom: 6px;
}
.inquiry-header h2 span { color: var(--green); font-weight: 500; }
.inquiry-header p {
  color: var(--gray-400);
  font-size: 0.95rem;
  max-width: 560px;
  margin: 0 auto;
}

.inquiry-form {
  max-width: 820px;
  margin: 0 auto;
  background: white;
  padding: 40px 44px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-600);
  letter-spacing: 0.2px;
}
.form-group label .required { color: #D9534F; margin-left: 2px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: var(--gray-700);
  background: var(--white);
  transition: 0.2s;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-300);
  font-weight: 300;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(29,122,74,0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
}
.form-submit { text-align: center; margin-top: 8px; }
.form-submit .btn-primary { padding: 13px 52px; font-size: 0.95rem; }

/* 相关产品 */
.section-related { padding: 72px 0; background: white; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  display: block;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: 0.25s ease;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
}
.related-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card .rc-img {
  height: 280px;
  background: #E4EDE7;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.related-card .rc-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.related-card:hover .rc-img img { transform: scale(1.04); }
.related-card .rc-img .fallback {
  font-size: 2.6rem;
  color: var(--green);
  opacity: 0.25;
}
.related-card .rc-body { padding: 20px 22px 24px; }
.related-card .rc-body h4 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--gray-800);
  margin-bottom: 6px;
  transition: color 0.2s;
}
.related-card:hover .rc-body h4 { color: var(--green); }
.related-card .rc-body p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ============================================================
   PRODUCTS 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .category-row { grid-template-columns: 280px 1fr; }
  .category-row .cat-body { padding: 28px 30px; }
  .product-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .product-card .card-img { height: 180px; }
  .detail-top { grid-template-columns: 320px 1fr; gap: 36px; }
  .detail-info h1 { font-size: 1.8rem; }
  .detail-gallery .main-img { height: 280px; }
  .related-grid { gap: 20px; }
  .inquiry-form { padding: 32px 32px; }
}

@media (max-width: 820px) {
  .page-banner { height: 300px; }
  .page-banner .banner-content h1 { font-size: 2.4rem; }
  .category-row { grid-template-columns: 240px 1fr; min-height: 200px; }
  .category-row .cat-body h3 { font-size: 1.3rem; }
  .category-row .cat-body { padding: 24px 26px; }
  .category-row .cat-body p { font-size: 0.9rem; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .detail-top { grid-template-columns: 1fr; gap: 32px; }
  .detail-gallery .main-img { height: 320px; }
  .detail-info h1 { font-size: 1.7rem; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-content h2 { font-size: 1.4rem; }
  .form-row { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 768px) {
  .page-banner { height: 240px; background-position: 50% 30%; }
  .page-banner .banner-content h1 { font-size: 1.8rem; }
  .page-banner .banner-content p { font-size: 0.9rem; }

  .section-category { padding: 48px 0 56px; }
  .category-row { grid-template-columns: 1fr; min-height: auto; }
  .category-row .cat-img { min-height: 200px; max-height: 240px; }
  .category-row .cat-body { padding: 24px 22px 28px; }
  .category-row .cat-body h3 { font-size: 1.25rem; }
  .category-row .cat-body p { font-size: 0.9rem; margin-bottom: 12px; }

  .section-products-tab { padding: 40px 0 56px; }
  .tab-buttons { gap: 10px; margin-bottom: 36px; }
  .tab-btn { padding: 10px 22px; font-size: 0.85rem; }
  .tab-btn i { font-size: 0.85rem; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .product-card .card-img { height: 150px; }
  .product-card .card-body { padding: 16px 16px 20px; }
  .product-card .card-body h4 { font-size: 1rem; }
  .product-card .card-body p { font-size: 0.82rem; }
  .panel-header h3 { font-size: 1.25rem; }
  .panel-header p { font-size: 0.88rem; }

  .product-detail { padding: 32px 0 0; }
  .detail-gallery .main-img { height: 260px; }
  .detail-info h1 { font-size: 1.45rem; }
  .detail-info .short-desc { font-size: 0.9rem; }
  .detail-content h2 { font-size: 1.25rem; }
  .detail-content p { font-size: 0.9rem; }

  .section-inquiry { padding: 48px 0 56px; }
  .inquiry-header h2 { font-size: 1.4rem; }
  .inquiry-header p { font-size: 0.88rem; }
  .inquiry-form { padding: 26px 22px; }
  .form-group input, .form-group textarea { padding: 10px 14px; font-size: 0.88rem; }

  .section-related { padding: 48px 0; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .related-card .rc-img { height: 140px; }
  .related-card .rc-body { padding: 16px 16px 20px; }
}

@media (max-width: 480px) {
  .page-banner { height: 200px; background-position: 50% 25%; }
  .page-banner .banner-content h1 { font-size: 1.4rem; }
  .page-banner .banner-content p { font-size: 0.8rem; }
  .category-row .cat-img { min-height: 160px; max-height: 200px; }
  .category-row .cat-body { padding: 18px 16px 22px; }
  .category-row .cat-body h3 { font-size: 1.1rem; }
  .category-row .cat-body p { font-size: 0.85rem; }
  .category-row .cat-body .cat-link { font-size: 0.8rem; }

  .tab-buttons { flex-direction: column; align-items: stretch; gap: 8px; margin-bottom: 28px; }
  .tab-btn { justify-content: center; padding: 12px 16px; font-size: 0.9rem; }
  .product-grid { grid-template-columns: 1fr; gap: 20px; }
  .product-card .card-img { height: 200px; }
  .panel-header h3 { font-size: 1.1rem; }
  .panel-header p { font-size: 0.82rem; }

  .detail-gallery .main-img { height: 220px; }
  .detail-info h1 { font-size: 1.25rem; }
  .detail-info .category-badge { font-size: 0.7rem; padding: 4px 12px; }
  .detail-actions { flex-direction: column; }
  .detail-actions .btn-primary { width: 100%; text-align: center; }
  .detail-content h2 { font-size: 1.1rem; }

  .form-submit .btn-primary { width: 100%; padding: 12px 20px; }
  .related-grid { grid-template-columns: 1fr; gap: 20px; }
  .related-card .rc-img { height: 180px; }
}