/* naritawholesale.com — B2B 询盘批发站基础样式 */

:root {
  --color-primary: #2d5f3f;
  --color-primary-dark: #1f4429;
  --color-primary-light: #4a8a64;
  --color-accent: #d4a574;
  --color-accent-dark: #b8865a;
  --color-text: #1a1a1a;
  --color-text-muted: #5a5a5a;
  --color-bg: #ffffff;
  --color-bg-soft: #f8f7f4;
  --color-border: #e5e3df;
  --color-success: #2d5f3f;
  --color-whatsapp: #25d366;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --radius: 6px;
  --max-width: 1180px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

/* ============= 顶部导航 ============= */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--color-primary);
  text-decoration: none;
}

.logo-mark {
  width: 38px;
  height: 38px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: bold;
}

.nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 15px;
}

.nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.cta-button {
  background: var(--color-primary);
  color: white !important;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  transition: background 0.2s;
}

.cta-button:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-primary);
}

/* ============= Hero ============= */
.hero {
  background: linear-gradient(135deg, #f8f7f4 0%, #e8e6df 100%);
  padding: 80px 24px 60px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.2;
  color: var(--color-primary-dark);
  margin-bottom: 18px;
  font-weight: 700;
}

.hero p {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.stat-item {
  text-align: left;
}

.stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 6px;
}

.hero-image {
  background: var(--color-primary);
  border-radius: 12px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  position: relative;
  overflow: hidden;
}

/* ============= 通用区块 ============= */
.section {
  padding: 80px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 34px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  font-weight: 700;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
}

.bg-soft { background: var(--color-bg-soft); }

/* ============= 网格卡片 ============= */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
}

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

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-soft);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 24px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 10px;
}

.card-text {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============= 产品卡片 ============= */
.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
}

.product-image {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #e8e6df 0%, #d4cfc4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  position: relative;
  overflow: hidden;
}

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

.product-card:hover .product-image img {
  transform: scale(1.04);
}

/* 无图占位（图片加载失败时显示品种名） */
.product-image.no-img::after {
  content: attr(data-placeholder);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--color-text-muted);
  background: linear-gradient(135deg, #e8e6df 0%, #d4cfc4 100%);
}

a.product-title { display: block; text-decoration: none; }
a.product-title:hover { text-decoration: none; color: var(--color-primary); }

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.product-body {
  padding: 20px;
}

.product-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
}

.product-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.product-spec {
  font-size: 13px;
  color: var(--color-text);
  margin-bottom: 4px;
}

.product-spec span {
  color: var(--color-text-muted);
}

.product-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

.btn-block { display: flex; width: 100%; }

/* ============= 产品详情页 ============= */
.product-hero {
  padding: 50px 24px;
  background: var(--color-bg-soft);
}

.product-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.product-gallery {
  background: var(--color-bg);
  border-radius: var(--radius);
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}

.product-info-tag {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}

.product-info h1 {
  font-size: 32px;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.product-info-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 24px;
  font-size: 15px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}

.spec-table tr {
  border-bottom: 1px solid var(--color-border);
}

.spec-table td {
  padding: 12px 0;
}

.spec-table td:first-child {
  color: var(--color-text-muted);
  width: 40%;
}

.spec-table td:last-child {
  font-weight: 600;
  color: var(--color-text);
}

.price-tag {
  background: var(--color-bg-soft);
  padding: 20px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border-left: 4px solid var(--color-accent);
}

.price-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.price-note {
  font-size: 16px;
  color: var(--color-primary-dark);
  font-weight: 600;
}

/* ============= 表单 ============= */
.form-section {
  background: var(--color-bg-soft);
  padding: 40px;
  border-radius: var(--radius);
}

.form-row {
  margin-bottom: 18px;
}

.form-row label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-row label .required {
  color: #c0392b;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-base);
  font-size: 15px;
  background: white;
  transition: border-color 0.2s;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-row textarea {
  resize: vertical;
  min-height: 100px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-message {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 18px;
  font-size: 14px;
  display: none;
}

.form-message.success {
  background: #e8f5e9;
  color: #2d5f3f;
  border: 1px solid #4a8a64;
  display: block;
}

.form-message.error {
  background: #ffebee;
  color: #c0392b;
  border: 1px solid #e57373;
  display: block;
}

/* ============= 过滤器 ============= */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-pill {
  padding: 8px 18px;
  border: 1.5px solid var(--color-border);
  border-radius: 30px;
  background: white;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.filter-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-pill.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ============= 关于我们 ============= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 {
  font-size: 30px;
  color: var(--color-primary-dark);
  margin-bottom: 18px;
}

.about-content p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 16px;
}

.about-image {
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

/* ============= 信任徽章 ============= */
.trust-bar {
  padding: 30px 24px;
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.trust-item strong {
  color: var(--color-primary-dark);
  font-size: 16px;
}

/* ============= 底部 ============= */
.footer {
  background: var(--color-primary-dark);
  color: #c8d4cb;
  padding: 50px 24px 20px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer h4 {
  color: white;
  margin-bottom: 16px;
  font-size: 15px;
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: 8px;
}

.footer a {
  color: #c8d4cb;
  font-size: 14px;
}

.footer a:hover {
  color: white;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  text-align: center;
}

/* ============= WhatsApp 浮动按钮 ============= */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 28px;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 99;
  transition: transform 0.2s;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  text-decoration: none;
  color: white;
}

/* ============= 响应式 ============= */
@media (max-width: 900px) {
  .hero-inner,
  .product-hero-inner,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero h1 {
    font-size: 32px;
  }

  .section {
    padding: 50px 24px;
  }

  .section-title {
    font-size: 26px;
  }

  .nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .nav ul.show {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

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

@media (max-width: 600px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .catalog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ============= 数据驱动组件（目录搜索 / 图库 / 面包屑） ============= */

/* 首页 Hero 主图 */
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 目录页工具栏 */
.catalog-toolbar {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.catalog-search {
  width: 100%;
  max-width: 420px;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 30px;
  font-size: 15px;
  font-family: var(--font-base);
  background: white;
}

.catalog-search:focus {
  outline: none;
  border-color: var(--color-primary);
}

.catalog-count {
  font-size: 14px;
  color: var(--color-text-muted);
}

.catalog-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-muted);
  padding: 40px 0;
}

/* 产品详情页面包屑 */
.breadcrumb {
  background: var(--color-bg-soft);
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.breadcrumb-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  color: var(--color-text-muted);
}

.breadcrumb-inner a { color: var(--color-text-muted); }
.breadcrumb-inner a:hover { color: var(--color-primary); }
.breadcrumb-inner .current { color: var(--color-text); font-weight: 600; }
.breadcrumb-inner span { margin: 0 8px; }

/* 产品图库 */
.product-gallery {
  flex-direction: column;
  gap: 14px;
  aspect-ratio: auto;
  background: transparent;
  border: none;
}

.gallery-main {
  width: 100%;
  aspect-ratio: 1/1;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.gallery-thumb {
  aspect-ratio: 1/1;
  object-fit: cover;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s;
  width: 100%;
  height: 100%;
}

.gallery-thumb:hover,
.gallery-thumb.active {
  border-color: var(--color-primary);
}

.gallery-empty {
  aspect-ratio: 1/1;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
  color: var(--color-text-muted);
}

.gallery-empty span { font-size: 40px; }
.gallery-empty .hint { font-size: 13px; max-width: 260px; }

/* 详情页折扣标签 */
.product-info-badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 8px;
  margin-bottom: 14px;
}

/* ============= 多语言切换器 ============= */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 16px;
  flex-shrink: 0;
}

.lang-switch a {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  padding: 4px 7px;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s;
}

.lang-switch a:hover {
  color: var(--color-primary);
  background: var(--color-bg-soft);
}

.lang-switch a.active {
  color: white;
  background: var(--color-primary);
}

@media (max-width: 768px) {
  .lang-switch {
    position: absolute;
    top: 14px;
    right: 52px;
    margin-left: 0;
    background: var(--color-bg-soft);
    border-radius: 6px;
    padding: 2px;
  }
}