/* ==========================================
 * Layui 顶部导航样式
 * 基于layui框架的现代化顶部导航
 * ========================================== */

/* ==========================================
 * 兼容原有admin-header类
 * ========================================== */
.admin-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(135deg, #16baaa 0%, #1e9fff 100%);
  background-color: #16baaa;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  z-index: 1000;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  padding: 0 20px;
}

.admin-header__title {
  font-size: 18px;
  font-weight: 600;
  color: white;
  margin-right: 30px;
}

.admin-nav {
  display: flex;
  align-items: center;
  flex: 1;
}

.admin-nav .nav-link {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  padding: 0 15px;
  height: 60px;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
  position: relative;
}

.admin-nav .nav-link:hover {
  color: white;
  background: rgba(255,255,255,0.1);
}

.admin-nav .nav-link.active {
  color: white;
  background: rgba(255,255,255,0.15);
}

.admin-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: white;
}

.admin-header__actions {
  display: flex;
  align-items: center;
  gap: 15px;
  color: white;
}

.admin-header__actions .btn-ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s ease;
}

.admin-header__actions .btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
}

/* ==========================================
 * 顶部导航主容器 (Layui标准)
 * ========================================== */
.layui-layout-admin .layui-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--layui-primary-gradient);
  background-color: var(--layui-primary);
  box-shadow: var(--layui-shadow-md);
  z-index: 999;
  transition: var(--layui-transition-normal);
}

/* 导航内部容器 */
.layui-layout-admin .layui-header .layui-layout-left,
.layui-layout-admin .layui-header .layui-layout-right {
  position: absolute;
  top: 0;
  height: 60px;
  display: flex;
  align-items: center;
}

.layui-layout-admin .layui-header .layui-layout-left {
  left: 0;
}

.layui-layout-admin .layui-header .layui-layout-right {
  right: 0;
}

/* ==========================================
 * 品牌标识区域
 * ========================================== */
.layui-layout-admin .layui-logo {
  position: absolute;
  left: 0;
  top: 0;
  width: 200px;
  height: 60px;
  padding: 0 var(--layui-space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.1);
  color: var(--layui-text-light);
  font-size: var(--layui-font-size-lg);
  font-weight: var(--layui-font-weight-bold);
  text-decoration: none;
  transition: var(--layui-transition-fast);
}

.layui-layout-admin .layui-logo:hover {
  background: rgba(0, 0, 0, 0.2);
  color: var(--layui-text-light);
}

.layui-layout-admin .layui-logo img {
  height: 32px;
  width: auto;
  margin-right: var(--layui-space-sm);
}

/* ==========================================
 * 导航菜单项
 * ========================================== */
.layui-layout-admin .layui-nav {
  background: none;
  color: var(--layui-text-light);
  padding: 0;
}

.layui-layout-admin .layui-nav .layui-nav-item {
  line-height: 60px;
  position: relative;
}

.layui-layout-admin .layui-nav .layui-nav-item a {
  color: var(--layui-text-light);
  padding: 0 var(--layui-space-lg);
  display: block;
  transition: var(--layui-transition-fast);
}

.layui-layout-admin .layui-nav .layui-nav-item a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--layui-text-light);
}

.layui-layout-admin .layui-nav .layui-nav-item.layui-this,
.layui-layout-admin .layui-nav .layui-nav-item.layui-this a {
  background: rgba(255, 255, 255, 0.15);
  color: var(--layui-text-light);
}

/* 导航项图标 */
.layui-layout-admin .layui-nav .layui-nav-item a .layui-icon {
  margin-right: var(--layui-space-sm);
  font-size: var(--layui-font-size-base);
}

/* ==========================================
 * 用户信息区域
 * ========================================== */
.layui-layout-admin .layui-header .layui-nav-user {
  display: flex;
  align-items: center;
  padding: 0 var(--layui-space-lg);
  color: var(--layui-text-light);
}

.layui-layout-admin .layui-header .layui-nav-user .layui-nav-img {
  width: 32px;
  height: 32px;
  border-radius: var(--layui-radius-full);
  margin-right: var(--layui-space-sm);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.layui-layout-admin .layui-header .layui-nav-user .layui-nav-name {
  font-size: var(--layui-font-size-sm);
  font-weight: var(--layui-font-weight-medium);
}

/* ==========================================
 * 下拉菜单
 * ========================================== */
.layui-layout-admin .layui-nav .layui-nav-child {
  top: 60px;
  left: auto;
  right: 0;
  background: var(--layui-bg-primary);
  border: 1px solid var(--layui-border);
  border-radius: var(--layui-radius-md);
  box-shadow: var(--layui-shadow-lg);
  min-width: 180px;
  padding: var(--layui-space-xs) 0;
}

.layui-layout-admin .layui-nav .layui-nav-child dd {
  margin: 0;
}

.layui-layout-admin .layui-nav .layui-nav-child dd a {
  color: var(--layui-text-primary);
  padding: var(--layui-space-sm) var(--layui-space-lg);
  line-height: 1.5;
  transition: var(--layui-transition-fast);
}

.layui-layout-admin .layui-nav .layui-nav-child dd a:hover {
  background: var(--layui-bg-secondary);
  color: var(--layui-primary);
}

.layui-layout-admin .layui-nav .layui-nav-child .layui-this,
.layui-layout-admin .layui-nav .layui-nav-child .layui-this a {
  background: var(--layui-primary);
  color: var(--layui-text-light);
}

/* 下拉箭头 */
.layui-layout-admin .layui-nav .layui-nav-more {
  border-top-color: var(--layui-text-light);
}

.layui-layout-admin .layui-nav .layui-nav-mored,
.layui-layout-admin .layui-nav .layui-nav-itemed > a .layui-nav-more {
  border-top-color: transparent;
  border-bottom-color: var(--layui-text-light);
}

/* ==========================================
 * 移动端菜单按钮
 * ========================================== */
.layui-layout-admin .layui-header .layui-layout-mobile {
  display: none;
  position: absolute;
  left: var(--layui-space-lg);
  top: 50%;
  transform: translateY(-50%);
  color: var(--layui-text-light);
  font-size: var(--layui-font-size-xl);
  cursor: pointer;
  padding: var(--layui-space-sm);
  border-radius: var(--layui-radius-md);
  transition: var(--layui-transition-fast);
}

.layui-layout-admin .layui-header .layui-layout-mobile:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================
 * 移动端适配
 * ========================================== */
@media screen and (max-width: 768px) {
  .layui-layout-admin .layui-header .layui-layout-mobile {
    display: block;
  }
  
  .layui-layout-admin .layui-logo {
    left: 50px;
    width: auto;
    padding: 0 var(--layui-space-md);
  }
  
  .layui-layout-admin .layui-header .layui-nav {
    display: none;
  }
  
  .layui-layout-admin .layui-header .layui-layout-right {
    right: var(--layui-space-md);
  }
  
  .layui-layout-admin .layui-header .layui-nav-user {
    padding: 0 var(--layui-space-md);
  }
  
  .layui-layout-admin .layui-header .layui-nav-user .layui-nav-name {
    display: none;
  }
}

/* ==========================================
 * 导航栏动画效果
 * ========================================== */
.layui-layout-admin .layui-header {
  animation: layuiSlideDown 0.3s ease-out;
}

@keyframes layuiSlideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 导航项悬停效果 */
.layui-layout-admin .layui-nav .layui-nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--layui-text-light);
  border-radius: var(--layui-radius-sm);
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.layui-layout-admin .layui-nav .layui-nav-item:hover::after,
.layui-layout-admin .layui-nav .layui-nav-item.layui-this::after {
  width: 80%;
}

/* ==========================================
 * 暗色模式支持
 * ========================================== */
@media (prefers-color-scheme: dark) {
  .layui-layout-admin .layui-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-bottom: 1px solid var(--layui-border-dark);
  }
  
  .layui-layout-admin .layui-logo {
    background: rgba(255, 255, 255, 0.05);
  }
  
  .layui-layout-admin .layui-nav .layui-nav-child {
    background: var(--layui-bg-dark);
    border-color: var(--layui-border-dark);
  }
  
  .layui-layout-admin .layui-nav .layui-nav-child dd a {
    color: var(--layui-text-light);
  }
  
  .layui-layout-admin .layui-nav .layui-nav-child dd a:hover {
    background: rgba(255, 255, 255, 0.1);
  }
}