/* 导航下拉菜单样式 */

/* 下拉菜单容器 - 父级 */
.nav-item-dropdown {
  position: relative;
}

/* 下拉菜单容器 */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background-color: #fff;
  border-radius: 8px;
  border: 1px solid var(--border-blue);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  z-index: 1000;
  overflow: hidden;
}

/* 悬停父级时显示下拉菜单 */
.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 下拉菜单项 */
.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-dark);
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* 下拉菜单项悬停效果 */
.dropdown-menu a:hover {
  background-color: var(--blue-pale);
  color: var(--blue);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .nav-item-dropdown {
    position: static;
  }

  .dropdown-menu {
    position: static;
    width: 100%;
    min-width: auto;
    border: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    height: 0;
    transform: none;
    transition: height 0.3s ease, opacity 0.3s ease;
    background-color: var(--blue-pale);
  }

  /* 移动端点击展开 - 使用 focus-within 实现 */
  .nav-item-dropdown:focus-within .dropdown-menu,
  .nav-item-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    height: auto;
  }

  /* 移动端菜单项样式 */
  .dropdown-menu a {
    padding: 12px 24px;
    border-bottom: 1px solid var(--border);
  }

  .dropdown-menu a:last-child {
    border-bottom: none;
  }

  .dropdown-menu a:hover {
    background-color: #fff;
  }
}