/* 后台管理页面样式 */
:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --danger-color: #FF3B30;
    --light-gray: #F2F2F7;
    --dark-gray: #8E8E93;
    --sidebar-width: 250px;
    --header-height: 60px;
    --text-color: #2C3E50;
    --accent-color: #FF6B6B;
    --background-color: #F8F9FA;
    --card-background: #FFFFFF;
    --border-color: #E9ECEF;
}

/* 后台页面基础样式 */
.admin-body {
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
    background-color: var(--light-gray);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 侧边栏样式 */
.admin-sidebar {
    width: var(--sidebar-width);
    background-color: white;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-weight: 600;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav .nav-link {
    padding: 0.75rem 1.5rem;
    color: var(--dark-gray);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.1);
}

.sidebar-nav .nav-link.active {
    color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.1);
    border-right: 3px solid var(--primary-color);
}

/* 主要内容区域 */
.admin-main {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.admin-header {
    height: 60px;
    background: white;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h1 {
    margin: 0;
    font-size: 1.5rem;
    color: #333;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-name {
    color: #666;
}

.logout-btn {
    padding: 0.5rem 1rem;
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: #e9ecef;
}

/* 内容面板 */
.admin-content {
    padding: 1rem;
}

#dashboard-panel {
    display: block; /* 确保仪表盘面板默认显示 */
}

/* 图表容器样式 */
.chart-container {
    position: relative;
    width: 100%;
    height: 300px !important;
    margin-bottom: 1rem;
    background-color: white;
    border-radius: 8px;
    padding: 1rem;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
    max-height: 300px;
}

/* 确保图表卡片样式正确 */
.card .chart-container {
    padding: 0;
    margin-bottom: 0;
    background-color: transparent;
}

/* 统计卡片样式 */
.stat-card {
    background: white;
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    margin-bottom: 1rem;
    transition: transform 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card .card-body {
    padding: 1.5rem;
}

.stat-card .card-title {
    color: var(--dark-gray);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.stat-card .card-text {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 600;
    margin: 0;
}

/* 图表网格 */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.chart-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.chart-card h3 {
    margin: 0 0 1rem;
    color: #333;
    font-size: 1.1rem;
}

/* 最近活动 */
.recent-activities {
    max-height: 400px;
    overflow-y: auto;
}

.recent-activities h2 {
    margin: 0 0 1.5rem;
    color: #333;
    font-size: 1.25rem;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    padding: 1rem;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.activity-content {
    flex: 1;
}

.activity-content p {
    margin: 0;
    color: #333;
}

.activity-content strong {
    color: var(--primary-color);
}

.activity-time {
    color: var(--dark-gray);
    font-size: 0.875rem;
}

/* 表格样式 */
.table {
    margin: 0;
}

.table th {
    font-weight: 600;
    color: var(--dark-gray);
    border-bottom: 2px solid var(--light-gray);
    padding: 1rem;
}

.table td {
    padding: 1rem;
    vertical-align: middle;
    color: #1c1c1e;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .admin-sidebar {
        position: fixed;
        height: 100vh;
        transform: translateX(-100%);
    }

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

    .admin-main {
        padding: 1rem;
    }

    #mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        padding: 0.5rem;
        cursor: pointer;
    }

    #mobile-menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--primary-color);
        position: relative;
        transition: all 0.3s ease;
    }

    #mobile-menu-toggle span::before,
    #mobile-menu-toggle span::after {
        content: '';
        position: absolute;
        width: 24px;
        height: 2px;
        background-color: var(--primary-color);
        transition: all 0.3s ease;
    }

    #mobile-menu-toggle span::before {
        top: -6px;
    }

    #mobile-menu-toggle span::after {
        bottom: -6px;
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1rem;
    }

    .activity-item {
        padding: 0.75rem;
    }

    .loading-overlay {
        left: 0;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #666;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-card, .activity-item {
    animation: fadeIn 0.5s ease forwards;
}

/* 渐变效果 */
.stat-icon svg {
    filter: drop-shadow(0 2px 4px rgba(45, 90, 240, 0.2));
}

/* 加载状态样式 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    color: var(--primary-color);
}

/* 确保内容区域可见 */
.admin-content {
    display: none;
    padding: 2rem;
    width: 100%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.admin-content.active {
    display: block;
    opacity: 1;
}

#dashboard-panel.active {
    display: block;
}