/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    background: #f4f6f9;
}

/* 页面布局 */
.admin-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 顶部导航栏 */
.admin-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: white;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-logo {
    height: 40px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logout-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: none;
    color: #666;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: #f8f9fa;
    color: #333;
}

/* 主要内容区域 */
.admin-container {
    display: flex;
    margin-top: 60px;
    min-height: calc(100vh - 60px);
}

/* 侧边栏 */
.admin-sidebar {
    width: 250px;
    background: white;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 60px;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.menu {
    list-style: none;
    padding: 1rem 0;
}

.menu-item {
    margin-bottom: 0.5rem;
}

.menu-item a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.menu-item a:hover {
    background: #f8f9fa;
    color: #007bff;
}

.menu-item.active a {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.1), rgba(0, 255, 157, 0.1));
    color: #007bff;
    border-right: 3px solid #007bff;
}

/* 主内容区域 */
.admin-main {
    flex: 1;
    margin-left: 250px;
    padding: 2rem;
    background: #f4f6f9;
    min-height: 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .admin-sidebar.active {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
        padding: 1rem;
    }

    .nav-toggle {
        display: block;
    }
}