/* nav.css - 导航+面包屑+分页（全局加载） */

/* Main Navigation */
.main-header {
  background: #1B4332;
  height: 70px;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #D4A373;
  letter-spacing: 1px;
}

.logo a {
  color: #D4A373;
}

.logo a:hover {
  color: #fff;
}

.main-nav {
  display: flex;
  align-items: center;
}

.main-nav ul {
  display: flex;
  list-style: none;
}

.main-nav li {
  margin-left: 2rem;
}

.main-nav a {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.3s ease;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #D4A373;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: #D4A373;
}

.main-nav a:hover::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: #fff;
  margin: 3px 0;
  transition: all 0.3s ease;
}

/* Breadcrumb */
.breadcrumb {
  background: #f8f6f3;
  padding: 1rem 0;
  border-bottom: 1px solid #D0C8BC;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  align-items: center;
}

.breadcrumb li {
  font-size: 0.875rem;
  color: #666;
}

.breadcrumb li + li::before {
  content: '>';
  margin: 0 0.5rem;
  color: #999;
}

.breadcrumb a {
  color: #1B4332;
}

.breadcrumb a:hover {
  color: #D4A373;
}

.breadcrumb .current {
  color: #666;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 3rem 0;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-block;
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  border: 1px solid #D0C8BC;
  color: #1B4332;
  border-radius: 4px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.pagination a:hover {
  background: #1B4332;
  color: #fff;
  border-color: #1B4332;
}

.pagination .current {
  background: #1B4332;
  color: #fff;
  border-color: #1B4332;
}

.pagination .disabled {
  color: #999;
  cursor: not-allowed;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .main-header {
    height: auto;
    min-height: 60px;
  }
  
  .header-inner {
    flex-wrap: wrap;
    padding: 0.5rem 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .main-nav {
    display: none;
    width: 100%;
    background: #0F2922;
    margin-top: 0.5rem;
  }
  
  .main-nav.active {
    display: block;
  }
  
  .main-nav ul {
    flex-direction: column;
    padding: 1rem 0;
  }
  
  .main-nav li {
    margin: 0;
  }
  
  .main-nav a {
    display: block;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  .main-nav a::after {
    display: none;
  }
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 45px;
  height: 45px;
  background: #1B4332;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: background 0.3s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.back-to-top:hover {
  background: #D4A373;
}

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

@media (max-width: 768px) {
  .back-to-top {
    width: 40px;
    height: 40px;
    bottom: 1rem;
    right: 1rem;
    font-size: 1rem;
  }
}