/* ========================================
   后台管理样式
   ======================================== */

/* 登录页 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    width: 400px;
    padding: 40px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-title {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--text-color);
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form .btn-primary {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

/* 后台布局 */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.admin-sidebar {
    width: 220px;
    background: #304156;
    color: #bfcbd9;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    height: 60px;
    line-height: 60px;
    text-align: center;
    background: #263445;
    font-size: 18px;
    font-weight: 600;
    color: #fff;
}

.sidebar-menu {
    padding: 10px 0;
}

.menu-item {
    display: block;
    padding: 12px 20px;
    color: #bfcbd9;
    transition: all 0.3s;
}

.menu-item:hover,
.menu-item.active {
    background: #263445;
    color: #409eff;
}

.menu-item i {
    margin-right: 8px;
}

/* 主内容区 */
.admin-main {
    flex: 1;
    margin-left: 220px;
    min-height: 100vh;
}

/* 头部 */
.admin-header {
    height: 60px;
    background: #fff;
    border-bottom: 1px solid #e6e6e6;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 内容区 */
.admin-content {
    padding: 20px;
    background: var(--bg-color);
    min-height: calc(100vh - 60px);
}

/* 页面标题 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.page-title {
    font-size: 20px;
    font-weight: 600;
}

/* 统计卡片组 */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-item {
    background: #fff;
    padding: 20px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}

.stat-icon.blue { background: #409eff; }
.stat-icon.green { background: #67c23a; }
.stat-icon.orange { background: #e6a23c; }
.stat-icon.red { background: #f56c6c; }

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 24px;
    font-weight: 600;
    line-height: 1;
}

.stat-text {
    font-size: 14px;
    color: var(--text-color-secondary);
    margin-top: 5px;
}

/* 数据表格 */
.data-table {
    background: #fff;
    border-radius: 4px;
    overflow: hidden;
}

.table-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: #fff;
    border-radius: 8px;
    width: 500px;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color-secondary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: var(--text-color-secondary);
    margin-bottom: 15px;
}

.breadcrumb a {
    color: var(--text-color-secondary);
}

.breadcrumb span {
    margin: 0 8px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .admin-sidebar.show {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
}