/* 导航下拉菜单样式优化 */
.navbar-inverse .navbar-nav > .dropdown {
    position: relative;
}

.navbar-inverse .navbar-nav > .dropdown > a {
    padding: 15px 15px;
    position: relative;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-inverse .navbar-nav > .dropdown > a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 下拉菜单样式 - 桌面端 */
.navbar-inverse .dropdown-menu {
    background-color: #222;
    border: none;
    border-radius: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    margin: 0;
    min-width: 180px;
    padding: 5px 0;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 999;
    opacity: 0;
    transform: translateY(10px);
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.navbar-inverse .dropdown:hover .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

/* 下拉菜单项样式 - 桌面端 */
.navbar-inverse .dropdown-menu > li > a {
    color: #ddd;
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.navbar-inverse .dropdown-menu > li > a:hover,
.navbar-inverse .dropdown-menu > li > a:focus {
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    padding-left: 25px;
}

/* 下拉菜单图标样式 - 桌面端 */
.navbar-inverse .dropdown-menu > li > a i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

/* 桌面端下拉菜单的右侧对齐（防止溢出） */
@media (min-width: 768px) {
    /* 如果菜单在右侧可能溢出，设置为右对齐 */
    .navbar-nav.navbar-right .dropdown-menu {
        left: auto;
        right: 0;
    }
    
    /* 桌面端隐藏关闭按钮 */
    .drawer-close-btn {
        display: none !important;
    }
}

/* 移动端抽屉式菜单样式 - 应用于整个导航菜单 */
@media (max-width: 767px) {
    /* 确保折叠按钮旁边的后台/登录按钮在移动端正确显示 */
    .navbar-header .navbar-toggle.btn {
        /*z-index: 1060; !* 确保在最顶层显示 *!*/
        margin-right: 5%;
        background: transparent;
        color: #9d9d9d;
        border: none;
        font-size: 14px;
        padding: 10px 15px;
        line-height: 1.5;
    }
    
    .navbar-header .navbar-toggle.btn:hover {
        color: #fff;
        background-color: rgba(255, 255, 255, 0.1);
    }
    
    /* 禁用Bootstrap默认的折叠动画 */
    .navbar-inverse .navbar-collapse {
        transition: none !important;
        -webkit-transition: none !important;
    }
    
    /* 初始状态 - 确保菜单在屏幕外 */
    .navbar-inverse .navbar-collapse {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        margin: 0;
        background-color: #222;
        border: none;
        border-radius: 0;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
        opacity: 0;
        z-index: 1050;
        overflow-y: auto;
        padding: 0;
        display: block !important;
        visibility: hidden;
    }
    
    /* 当菜单打开时 - 使用transform代替left属性以获得更好的性能 */
    .navbar-inverse .navbar-collapse.collapse.in {
        left: 0;
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    }
    
    /* 抽屉菜单标题 - 添加右上角关闭按钮 */
    .navbar-inverse .navbar-collapse .mobile-drawer::before {
        content: '福利屋';
        display: block;
        padding: 20px 15px;
        background-color: #007bff;
        color: white;
        font-size: 18px;
        font-weight: bold;
        border-bottom: 1px solid #444;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        pointer-events: none;
    }
    
    /* 在标题的右上角添加关闭按钮 */
    .navbar-inverse .navbar-collapse .mobile-drawer::after {
        content: '×';
        position: absolute;
        top: 15px;
        right: 15px;
        color: white;
        font-size: 24px;
        cursor: pointer;
        z-index: 1060;
        width: 30px;
        height: 30px;
        line-height: 30px;
        text-align: center;
        background-color: rgba(0, 0, 0, 0.2);
        border-radius: 50%;
        transition: background-color 0.3s ease;
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer::after:hover {
        background-color: rgba(0, 0, 0, 0.4);
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer {
        position: relative;
        padding-top: 60px; /* 为标题留出空间 */
    }
    
    /* 优化移动端菜单项样式 */
    .navbar-inverse .navbar-collapse .mobile-drawer > li {
        display: block;
        width: 100%;
        border-bottom: 1px solid #333;
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer > li > a {
        color: #ddd;
        padding: 15px 20px;
        font-size: 16px;
        line-height: 1.5;
        white-space: normal;
        word-wrap: break-word;
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer > li > a:hover {
        color: #fff;
        background-color: #007bff;
        padding-left: 25px;
    }
    
    /* 优化移动端下拉菜单图标 */
    .navbar-inverse .navbar-collapse .mobile-drawer > li > a i {
        margin-right: 12px;
        width: 20px;
        font-size: 16px;
    }
    
    /* 下拉子菜单样式 */
    .navbar-inverse .navbar-collapse .mobile-drawer .dropdown-menu {
        position: static;
        background-color: #1a1a1a;
        box-shadow: none;
        margin: 0;
        padding: 0;
        min-width: 100%;
        opacity: 1;
        transform: none;
        visibility: visible;
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer .dropdown-menu > li > a {
        padding: 12px 35px;
        font-size: 14px;
    }
    
    .navbar-inverse .navbar-collapse .mobile-drawer .dropdown-menu > li > a:hover {
        padding-left: 40px;
    }
    
    /* 背景遮罩层 - 当抽屉菜单打开时显示 */
    .drawer-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        display: none;
        opacity: 0;
        transition: opacity 0.3s ease;
        cursor: pointer;
    }
    
    /* 当菜单打开时显示遮罩层 - 增强选择器以确保兼容性 */
    .navbar-inverse .navbar-collapse.collapse.in ~ .drawer-overlay,
    .navbar-inverse .navbar-collapse.show ~ .drawer-overlay {
        display: block !important;
        opacity: 1 !important;
        z-index: 1040 !important;
        /* 确保遮罩层能够覆盖整个屏幕 */
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
    }
    
    /* 确保导航栏在移动端完全展开时的样式 */
    .navbar-inverse {
        position: relative;
        z-index: 1000;
    }
    
    /* 适配非常小的屏幕 */
    @media (max-width: 360px) {
        .navbar-inverse .navbar-collapse {
            width: 90%;
        }
    }
}