/* ============================================
   母婴用品公司网站 - 主样式表
   主色调：#008080 (Teal)
   时间：2027年
   ============================================ */

/* ===== 全局变量与基础样式 ===== */
:root {
  --primary: #008080;
  --primary-light: #e8f5f5;
  --primary-dark: #006666;
  --accent: #ff6b6b;
  --accent-light: #fff0f0;
  --text-dark: #333333;
  --text-mid: #666666;
  --text-light: #999999;
  --white: #ffffff;
  --bg-warm: #FFF8F0;
  --bg-gray: #f5f5f5;
  --bg-soft: #fafbfc;
  --border: #e0e0e0;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  min-width: 320px;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover { color: var(--primary-dark); }

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

/* 图片占位符 - 使用渐变模拟产品图片 */
.img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 14px;
  position: relative;
  overflow: hidden;
}

/* ===== 顶部信息栏（无背景） ===== */
/* 第一行：logo + 搜索 + 注册登录 */
.header-top {
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.header-top .container,
.header-top .container-fluid { position: relative; }

/* Logo区域 */
.header-logo {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  color: var(--primary);
  text-decoration: none;
  white-space: nowrap;
}
.header-logo i {
  font-size: 32px;
  margin-right: 8px;
}
.header-logo:hover { color: var(--primary-dark); }

/* 搜索框 */
.search-box {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
}
.search-box input {
  width: 100%;
  padding: 8px 40px 8px 16px;
  border: 2px solid var(--border);
  border-radius: 20px;
  outline: none;
  font-size: 14px;
  transition: border-color 0.3s ease;
}
.search-box input:focus { border-color: var(--primary); }
.search-box button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  transition: background 0.3s ease;
}
.search-box button:hover { background: var(--primary-dark); }

/* 注册登录 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
}
.header-actions a {
  color: var(--text-mid);
  font-size: 14px;
  white-space: nowrap;
  transition: color 0.3s ease;
}
.header-actions a:hover { color: var(--primary); }
.header-actions .btn-register {
  background: var(--primary);
  color: var(--white) !important;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
}
.header-actions .btn-register:hover {
  background: var(--primary-dark);
  color: var(--white) !important;
}

/* ===== 主要菜单行（带背景） ===== */
/* 第二行：网站首页、关于我们、公司产品、公司新闻、留言反馈 */
.header-nav {
  background: var(--primary);
}

/* 菜单项平均分配宽度，与第一行logo区域对齐 */
.header-nav .nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}
.header-nav .nav-list li {
  flex: 1;
  text-align: center;
}
.header-nav .nav-list li a {
  display: block;
  color: var(--white);
  padding: 14px 0;
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: background 0.3s ease;
}
.header-nav .nav-list li a:hover,
.header-nav .nav-list li a.active {
  background: rgba(255,255,255,0.15);
}
/* 激活状态底部指示条 */
.header-nav .nav-list li a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--white);
  border-radius: 2px 2px 0 0;
}

/* ===== 轮播图（CSS动画实现，无JS） ===== */
.carousel-wrapper {
  position: relative;
  height: 250px;
  overflow: hidden;
}

/* 使用CSS动画实现自动轮播 */
.carousel-slides {
  display: flex;
  width: 300%; /* 3张图 */
  height: 100%;
  animation: carouselSlide 12s infinite;
}

.carousel-slide {
  width: 33.333%;
  height: 100%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* 轮播图颜色块模拟图片 */
.carousel-slide:nth-child(1) {
  background: linear-gradient(135deg, #008080, #20b2aa);
}
.carousel-slide:nth-child(2) {
  background: linear-gradient(135deg, #ff6b6b, #ffa07a);
}
.carousel-slide:nth-child(3) {
  background: linear-gradient(135deg, #6a5acd, #9370db);
}

.carousel-content {
  text-align: center;
  color: var(--white);
  z-index: 1;
  padding: 20px;
}
.carousel-content h2 {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.carousel-content p {
  font-size: 16px;
  opacity: 0.9;
}

/* 轮播动画 */
@keyframes carouselSlide {
  0%, 28%   { transform: translateX(0); }
  33%, 61%  { transform: translateX(-33.333%); }
  66%, 94%  { transform: translateX(-66.666%); }
  100%      { transform: translateX(0); }
}

/* 轮播指示器 */
.carousel-dots {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}
.carousel-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  display: inline-block;
  animation: dotPulse 12s infinite;
}
.carousel-dots span:nth-child(1) { animation-delay: 0s; }
.carousel-dots span:nth-child(2) { animation-delay: 4s; }
.carousel-dots span:nth-child(3) { animation-delay: 8s; }

@keyframes dotPulse {
  0%, 28%, 100%   { background: rgba(255,255,255,0.5); }
  5%, 25%  { background: var(--white); }
  33%, 100% { background: rgba(255,255,255,0.5); }
}

/* ===== 板块标题 ===== */
.section-title {
  text-align: center;
  margin-bottom: 36px;
}
.section-title h2 {
  font-size: 28px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}
.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--primary);
  margin: 12px auto 0;
  border-radius: 2px;
}
.section-title p {
  color: var(--text-mid);
  font-size: 15px;
}

/* "更多"链接 */
.more-link {
  font-size: 14px;
  color: var(--primary);
  transition: color 0.3s ease;
}
.more-link i { margin-left: 4px; font-size: 12px; }
.more-link:hover { color: var(--primary-dark); }

/* ===== 产品卡片 ===== */
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.product-card .card-img {
  height: 200px;
  overflow: hidden;
}
.product-card .card-img .img-placeholder {
  width: 100%;
  height: 100%;
  font-size: 48px;
}
.product-card .card-body {
  padding: 16px;
}
.product-card .card-title {
  font-size: 16px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.product-card .card-text {
  font-size: 13px;
  color: var(--text-mid);
  margin-bottom: 12px;
  line-height: 1.5;
}
.product-card .card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
}

/* ===== 新闻卡片 ===== */
.news-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.news-card .card-img {
  height: 160px;
  overflow: hidden;
}
.news-card .card-img .img-placeholder {
  width: 100%;
  height: 100%;
  font-size: 36px;
}
.news-card .card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card .card-date {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 6px;
}
.news-card .card-title {
  font-size: 15px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.news-card .card-text {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.5;
  flex: 1;
}

/* ===== 关于我们板块（首页） ===== */
.about-section {
  background: var(--bg-warm);
}
.about-text {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.8;
}

/* 特色卡片 */
.feature-card {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
  height: 100%;
}
.feature-card:hover { transform: translateY(-4px); }
.feature-card .feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}
.feature-card h4 {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.6;
}

/* ===== 页面头部横幅 ===== */
.page-banner {
  background: linear-gradient(135deg, var(--primary), #20b2aa);
  color: var(--white);
  padding: 40px 0;
  text-align: center;
}
.page-banner h1 {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 8px;
}
.page-banner p {
  font-size: 14px;
  opacity: 0.9;
}

/* ===== 关于我们页面 - 左侧类目 ===== */
.sidebar-menu {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.sidebar-menu .menu-title {
  background: var(--primary);
  color: var(--white);
  padding: 14px 20px;
  font-size: 16px;
  font-weight: bold;
}
.sidebar-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar-menu ul li a {
  display: block;
  padding: 13px 20px;
  color: var(--text-dark);
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
}
.sidebar-menu ul li a:hover,
.sidebar-menu ul li a.active {
  color: var(--primary);
  background: var(--primary-light);
  padding-left: 26px;
}
.sidebar-menu ul li a::before {
  content: '\f105';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  margin-right: 8px;
  color: var(--text-light);
}

/* ===== 右侧内容区 ===== */
.content-area {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.content-area h3 {
  font-size: 20px;
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
}
.content-area p {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.9;
  margin-bottom: 16px;
}
.content-area img,
.content-area .img-placeholder {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 16px 0;
}

/* ===== 筛选区 ===== */
.filter-section {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.filter-section h5 {
  font-size: 14px;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.filter-section .form-select,
.filter-section .form-control {
  font-size: 13px;
  border-color: var(--border);
}
.filter-section .form-select:focus,
.filter-section .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(0,128,128,0.15);
}

/* ===== 产品/新闻列表项 ===== */
.list-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}
.list-item:last-child { border-bottom: none; }
.list-item:hover { background: var(--primary-light); border-radius: var(--radius); padding: 16px 12px; }
.list-item .item-img {
  width: 180px;
  min-width: 180px;
  height: 130px;
  border-radius: var(--radius);
  overflow: hidden;
}
.list-item .item-img .img-placeholder {
  width: 100%;
  height: 100%;
  font-size: 32px;
}
.list-item .item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.list-item .item-info h4 {
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 6px;
}
.list-item .item-info h4 a {
  color: var(--text-dark);
}
.list-item .item-info h4 a:hover { color: var(--primary); }
.list-item .item-info .item-date {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 8px;
}
.list-item .item-info .item-desc {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.6;
  flex: 1;
}
.list-item .item-info .item-meta {
  margin-top: 8px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.list-item .item-info .item-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 12px;
}

/* ===== 分页 ===== */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}
.pagination {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.pagination li a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-mid);
  background: var(--white);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.pagination li a:hover,
.pagination li a.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* ===== 留言反馈表单 ===== */
.feedback-form .form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}
.feedback-form .form-control,
.feedback-form .form-select {
  font-size: 14px;
  border-color: var(--border);
  padding: 10px 14px;
  border-radius: 6px;
}
.feedback-form .form-control:focus,
.feedback-form .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(0,128,128,0.15);
}
.feedback-form textarea.form-control {
  min-height: 140px;
  resize: vertical;
}
.btn-submit {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 10px 36px;
  border-radius: 6px;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.3s ease;
}
.btn-submit:hover {
  background: var(--primary-dark);
}

/* 联系信息卡片 */
.contact-info-card {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.contact-info-card .info-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text-mid);
}
.contact-info-card .info-item i {
  color: var(--primary);
  margin-top: 3px;
}

/* ===== 荣誉卡片 ===== */
.honor-card {
  text-align: center;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.honor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.honor-card .honor-icon {
  font-size: 40px;
  color: var(--primary);
  margin-bottom: 12px;
}

/* ===== 时间线（公司发展） ===== */
.timeline-item {
  position: relative;
  padding-left: 30px;
  padding-bottom: 24px;
  border-left: 2px solid var(--primary-light);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-item .time-label {
  font-size: 14px;
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 4px;
}
.timeline-item p {
  font-size: 14px;
  color: var(--text-mid);
  margin: 0;
}

/* ===== 面包屑 ===== */
.breadcrumb-nav {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 0;
}
.breadcrumb-nav a { color: var(--text-mid); }
.breadcrumb-nav a:hover { color: var(--primary); }
.breadcrumb-nav span { color: var(--primary); }

/* ===== 底部内容（所有页面共用） ===== */
.site-footer {
  background: #2c3e50;
  color: #bdc3c7;
}
.footer-top {
  padding: 48px 0 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-col h5 {
  color: var(--white);
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: #bdc3c7;
  font-size: 13px;
  transition: color 0.3s ease;
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-col p {
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 0;
}
.footer-col .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 13px;
}
.footer-col .contact-item i {
  color: var(--primary);
  margin-top: 3px;
}

.footer-bottom {
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: #7f8c8d;
}

/* ===== 关于我们页面 - 类目高亮 ===== */
.sidebar-menu ul li a.highlight {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 500;
}

/* ===== 详情页图片展示 ===== */
.detail-img {
  width: 100%;
  max-height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.detail-img .img-placeholder {
  width: 100%;
  height: 300px;
  font-size: 48px;
}
.detail-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-light);
}
.detail-meta span i { margin-right: 4px; color: var(--primary); }

/* 产品详情规格表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
.spec-table th,
.spec-table td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  font-size: 14px;
}
.spec-table th {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
  width: 120px;
  text-align: right;
}
.spec-table td {
  color: var(--text-mid);
}

/* ===== 按钮样式 ===== */
.btn-outline-primary-custom {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 13px;
  transition: all 0.3s ease;
}
.btn-outline-primary-custom:hover {
  background: var(--primary);
  color: var(--white);
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
  .header-logo { font-size: 20px; }
  .header-logo i { font-size: 26px; }
  .header-nav .nav-list li a { font-size: 13px; padding: 10px 0; }
  .carousel-wrapper { height: 200px; }
  .carousel-content h2 { font-size: 24px; }
  .carousel-content p { font-size: 14px; }
  .list-item { flex-direction: column; }
  .list-item .item-img { width: 100%; min-width: auto; height: 160px; }
}

@media (max-width: 768px) {
  .header-nav .nav-list { flex-wrap: wrap; }
  .header-nav .nav-list li { flex: 0 0 33.333%; }
  .header-nav .nav-list li a { font-size: 12px; padding: 8px 0; }
  .carousel-wrapper { height: 160px; }
  .carousel-content h2 { font-size: 20px; }
  .carousel-content p { font-size: 12px; }
  .section-title h2 { font-size: 22px; }
  .page-banner { padding: 28px 0; }
  .page-banner h1 { font-size: 22px; }
  .footer-top { padding: 32px 0 20px; }
  .content-area { padding: 20px; }
}

@media (max-width: 576px) {
  .header-top .row { flex-direction: column; text-align: center; }
  .header-logo { justify-content: center; margin-bottom: 8px; }
  .search-box { max-width: 100%; }
  .header-actions { justify-content: center; margin-top: 8px; }
  .carousel-wrapper { height: 140px; }
  .carousel-content h2 { font-size: 18px; }
}