@charset "UTF-8";

/* ===== 悦海科技 - 导航与面包屑 ===== */

/* 顶部导航栏 */
.main-nav {
  background-color: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* Logo区域 */
.logo {
  display: flex;
  align-items: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
}

.logo a {
  color: var(--text-white);
  text-decoration: none;
}

.logo a:hover {
  color: var(--secondary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--spacing-sm);
  font-weight: 700;
  color: var(--primary);
  font-size: 1.125rem;
}

/* 导航菜单 */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
}

.nav-menu li {
  margin-left: var(--spacing-lg);
}

.nav-menu a {
  color: var(--text-white);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
  text-decoration: none;
  display: block;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary);
  transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-menu a:hover {
  color: var(--secondary);
}

.nav-menu a.active {
  color: var(--secondary);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-white);
  margin: 5px 0;
  transition: var(--transition);
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: var(--spacing-md) 0;
}

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

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

.breadcrumb .separator {
  margin: 0 var(--spacing-sm);
  color: var(--border-color);
}

.breadcrumb .current {
  color: var(--text-muted);
}

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-2xl);
  gap: var(--spacing-xs);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-dark);
  background-color: #fff;
  text-decoration: none;
  transition: var(--transition);
}

.pagination a:hover {
  background-color: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.pagination .current {
  background-color: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.pagination .prev,
.pagination .next {
  padding: 0 var(--spacing-md);
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: var(--transition);
  z-index: 999;
}

.back-to-top:hover {
  background-color: var(--secondary);
  transform: translateY(-2px);
}

.back-to-top.visible {
  display: flex;
}

/* ===== 响应式导航 ===== */
@media (max-width: 1024px) {
  .nav-menu li {
    margin-left: var(--spacing-md);
  }
  
  .nav-menu a {
    font-size: 0.875rem;
  }
}

@media (max-width: 767px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--primary);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-menu li {
    margin: 0;
    width: 100%;
  }
  
  .nav-menu a {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  .nav-menu a::after {
    display: none;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}