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HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Admin Dashboard</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.9.1/chart.min.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        :root {
            --primary: #4361ee;
            --secondary: #3f37c9;
            --success: #4cc9f0;
            --info: #4895ef;
            --warning: #f72585;
            --danger: #e63946;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --sidebar-width: 250px;
            --header-height: 60px;
        }

* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

body {
            background-color: #f5f7fb;
            color: var(--dark);
        }

/* Header */
        .header {
            position: fixed;
            top: 0;
            left: var(--sidebar-width);
            right: 0;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            background-color: white;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            z-index: 100;
        }

.header-search {
            display: flex;
            align-items: center;
        }

.header-search input {
            padding: 8px 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            width: 250px;
        }

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

.notification-icon, .profile {
            cursor: pointer;
        }

.profile img {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            object-fit: cover;
        }

/* Sidebar */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background-color: var(--dark);
            color: white;
            padding-top: 20px;
            transition: all 0.3s ease;
            z-index: 200;
        }

.sidebar-header {
            display: flex;
            align-items: center;
            justify-content: center;
            padding-bottom: 20px;
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

.sidebar-header h3 {
            font-size: 24px;
            font-weight: 600;
        }

.sidebar-menu {
            padding: 0 15px;
        }

.menu-item {
            display: flex;
            align-items: center;
            padding: 12px 15px;
            border-radius: 5px;
            margin-bottom: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

.menu-item:hover, .menu-item.active {
            background-color: var(--primary);
        }

.menu-item i {
            margin-right: 10px;
            font-size: 18px;
            width: 24px;
            text-align: center;
        }

/* Main Content */
        .main-content {
            margin-left: var(--sidebar-width);
            margin-top: var(--header-height);
            padding: 20px;
        }

.dashboard-title {
            margin-bottom: 20px;
        }

.stats-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

.stat-card {
            background-color: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

.stat-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 15px;
        }

.stat-card-header h4 {
            color: var(--gray);
            font-size: 16px;
            font-weight: 500;
        }

.stat-card-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
        }

.stat-card-value {
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 5px;
        }

.stat-card-change {
            font-size: 14px;
            color: var(--success);
            display: flex;
            align-items: center;
        }

.stat-card-change i {
            margin-right: 5px;
        }

.chart-container {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

.chart-card {
            background-color: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

.chart-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 15px;
        }

.chart-header h4 {
            font-size: 18px;
            font-weight: 600;
        }

.date-selector {
            display: flex;
            align-items: center;
            gap: 10px;
        }

.date-selector select {
            padding: 6px 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

.recent-activity {
            background-color: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

.activity-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 15px;
        }

.activity-header h4 {
            font-size: 18px;
            font-weight: 600;
        }

.view-all {
            color: var(--primary);
            cursor: pointer;
        }

.activity-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

.activity-item {
            display: flex;
            align-items: center;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }

.activity-item-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            margin-right: 15px;
        }

.activity-item-info h5 {
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 5px;
        }

.activity-item-info p {
            font-size: 14px;
            color: var(--gray);
        }

/* Responsive Design */
        @media (max-width: 991px) {
            .stats-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .chart-container {
                grid-template-columns: 1fr;
            }
        }

@media (max-width: 768px) {
            :root {
                --sidebar-width: 70px;
            }
            .sidebar-header h3, .menu-item span {
                display: none;
            }
            .menu-item {
                justify-content: center;
            }
            .menu-item i {
                margin-right: 0;
            }
            .header {
                left: var(--sidebar-width);
            }
        }

@media (max-width: 576px) {
            .stats-container {
                grid-template-columns: 1fr;
            }
            .header-search input {
                width: 150px;
            }
        }

/* Toggle button for sidebar */
        .toggle-sidebar {
            display: none;
            position: fixed;
            top: 15px;
            left: 15px;
            z-index: 300;
            cursor: pointer;
            background-color: var(--primary);
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

@media (max-width: 576px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .header {
                left: 0;
            }
            .main-content {
                margin-left: 0;
            }
            .toggle-sidebar {
                display: flex;
            }
            .sidebar.open {
                transform: translateX(0);
            }
        }
    </style>
</head>
<body>
    
    <div class="toggle-sidebar" id="toggleSidebar">
        <i class="fas fa-bars"></i>
    </div>

<div class="sidebar" id="sidebar">
        <div class="sidebar-header">
            <h3>Admin Panel</h3>
        </div>
        <div class="sidebar-menu">
            <div class="menu-item active">
                <i class="fas fa-tachometer-alt"></i>
                <span>Dashboard</span>
            </div>
            <div class="menu-item">
                <i class="fas fa-users"></i>
                <span>Users</span>
            </div>
            <div class="menu-item">
                <i class="fas fa-file-alt"></i>
                <span>Content</span>
            </div>
            <div class="menu-item">
                <i class="fas fa-chart-line"></i>
                <span>Analytics</span>
            </div>
            <div class="menu-item">
                <i class="fas fa-shopping-cart"></i>
                <span>Sales</span>
            </div>
            <div class="menu-item">
                <i class="fas fa-cog"></i>
                <span>Settings</span>
            </div>
        </div>
    </div>

<div class="header">
        <div class="header-search">
            <input type="text" placeholder="Search...">
        </div>
        <div class="header-right">
            <div class="notification-icon">
                <i class="fas fa-bell"></i>
            </div>
            <div class="profile">
                <img src="/api/placeholder/100/100" alt="Profile">
            </div>
        </div>
    </div>

<div class="main-content">
        <div class="dashboard-title">
            <h2>Dashboard Overview</h2>
        </div>

<div class="stats-container">
            <div class="stat-card">
                <div class="stat-card-header">
                    <h4>Total Users</h4>
                    <div class="stat-card-icon" style="background-color: var(--primary);">
                        <i class="fas fa-users"></i>
                    </div>
                </div>
                <div class="stat-card-value">4,385</div>
                <div class="stat-card-change">
                    <i class="fas fa-arrow-up"></i>
                    +12.5% from last month
                </div>
            </div>
            <div class="stat-card">
                <div class="stat-card-header">
                    <h4>Revenue</h4>
                    <div class="stat-card-icon" style="background-color: var(--success);">
                        <i class="fas fa-dollar-sign"></i>
                    </div>
                </div>
                <div class="stat-card-value">$43,284</div>
                <div class="stat-card-change">
                    <i class="fas fa-arrow-up"></i>
                    +8.3% from last month
                </div>
            </div>
            <div class="stat-card">
                <div class="stat-card-header">
                    <h4>Orders</h4>
                    <div class="stat-card-icon" style="background-color: var(--info);">
                        <i class="fas fa-shopping-bag"></i>
                    </div>
                </div>
                <div class="stat-card-value">1,247</div>
                <div class="stat-card-change">
                    <i class="fas fa-arrow-up"></i>
                    +5.7% from last month
                </div>
            </div>
            <div class="stat-card">
                <div class="stat-card-header">
                    <h4>Conversion Rate</h4>
                    <div class="stat-card-icon" style="background-color: var(--warning);">
                        <i class="fas fa-chart-pie"></i>
                    </div>
                </div>
                <div class="stat-card-value">3.2%</div>
                <div class="stat-card-change">
                    <i class="fas fa-arrow-up"></i>
                    +0.8% from last month
                </div>
            </div>
        </div>

<div class="chart-container">
            <div class="chart-card">
                <div class="chart-header">
                    <h4>Sales Overview</h4>
                    <div class="date-selector">
                        <select id="salesPeriod">
                            <option value="week">This Week</option>
                            <option value="month" selected>This Month</option>
                            <option value="year">This Year</option>
                        </select>
                    </div>
                </div>
                <canvas id="salesChart"></canvas>
            </div>
            <div class="chart-card">
                <div class="chart-header">
                    <h4>Traffic Sources</h4>
                </div>
                <canvas id="trafficChart"></canvas>
            </div>
        </div>

<div class="recent-activity">
            <div class="activity-header">
                <h4>Recent Activity</h4>
                <div class="view-all">View All</div>
            </div>
            <div class="activity-list">
                <div class="activity-item">
                    <div class="activity-item-icon" style="background-color: var(--primary);">
                        <i class="fas fa-user-plus"></i>
                    </div>
                    <div class="activity-item-info">
                        <h5>New user registered</h5>
                        <p>John Doe created an account</p>
                    </div>
                </div>
                <div class="activity-item">
                    <div class="activity-item-icon" style="background-color: var(--success);">
                        <i class="fas fa-shopping-cart"></i>
                    </div>
                    <div class="activity-item-info">
                        <h5>New sale</h5>
                        <p>Jane Smith purchased Premium Plan</p>
                    </div>
                </div>
                <div class="activity-item">
                    <div class="activity-item-icon" style="background-color: var(--info);">
                        <i class="fas fa-file-alt"></i>
                    </div>
                    <div class="activity-item-info">
                        <h5>New content published</h5>
                        <p>Admin published new article</p>
                    </div>
                </div>
                <div class="activity-item">
                    <div class="activity-item-icon" style="background-color: var(--warning);">
                        <i class="fas fa-exclamation-triangle"></i>
                    </div>
                    <div class="activity-item-info">
                        <h5>System alert</h5>
                        <p>Server load at 82% capacity</p>
                    </div>
                </div>
            </div>
        </div>
    </div>

// Menu Item Click
        const menuItems = document.querySelectorAll('.menu-item');
        menuItems.forEach(item => {
            item.addEventListener('click', function() {
                menuItems.forEach(i => i.classList.remove('active'));
                this.classList.add('active');
            });
        });

// Sales Chart
        const salesCtx = document.getElementById('salesChart').getContext('2d');
        const salesChart = new Chart(salesCtx, {
            type: 'line',
            data: {
                labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
                datasets: [{
                    label: 'Sales',
                    data: [12, 19, 15, 17, 21, 18, 25, 31, 28, 33, 29, 35],
                    backgroundColor: 'rgba(67, 97, 238, 0.2)',
                    borderColor: 'rgba(67, 97, 238, 1)',
                    borderWidth: 2,
                    tension: 0.3,
                    pointBackgroundColor: 'rgba(67, 97, 238, 1)',
                    pointBorderColor: 'rgba(67, 97, 238, 1)',
                    pointRadius: 3
                }, {
                    label: 'Revenue',
                    data: [32, 39, 35, 41, 46, 38, 51, 58, 52, 61, 55, 68],
                    backgroundColor: 'rgba(76, 201, 240, 0.2)',
                    borderColor: 'rgba(76, 201, 240, 1)',
                    borderWidth: 2,
                    tension: 0.3,
                    pointBackgroundColor: 'rgba(76, 201, 240, 1)',
                    pointBorderColor: 'rgba(76, 201, 240, 1)',
                    pointRadius: 3
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                scales: {
                    y: {
                        beginAtZero: true,
                        grid: {
                            color: 'rgba(0, 0, 0, 0.05)'
                        }
                    },
                    x: {
                        grid: {
                            display: false
                        }
                    }
                },
                plugins: {
                    legend: {
                        position: 'top',
                        align: 'end'
                    }
                }
            }
        });

// Traffic Chart
        const trafficCtx = document.getElementById('trafficChart').getContext('2d');
        const trafficChart = new Chart(trafficCtx, {
            type: 'doughnut',
            data: {
                labels: ['Direct', 'Social', 'Organic', 'Referral'],
                datasets: [{
                    data: [35, 25, 30, 10],
                    backgroundColor: [
                        'rgba(67, 97, 238, 1)',
                        'rgba(76, 201, 240, 1)',
                        'rgba(247, 37, 133, 1)',
                        'rgba(114, 9, 183, 1)'
                    ],
                    borderWidth: 0
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        position: 'right',
                    }
                },
                cutout: '70%'
            }
        });

// Sales Period Selector
        document.getElementById('salesPeriod').addEventListener('change', function() {
            let data;
            switch(this.value) {
                case 'week':
                    data = [5, 8, 12, 7, 10, 9, 11];
                    salesChart.data.labels = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
                    break;
                case 'month':
                    data = [12, 19, 15, 17, 21, 18, 25, 31, 28, 33, 29, 35];
                    salesChart.data.labels = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
                    break;
                case 'year':
                    data = [210, 240, 280, 320, 350];
                    salesChart.data.labels = ['2019', '2020', '2021', '2022', '2023'];
                    break;
            }
            
            salesChart.data.datasets[0].data = data;
            // Generate second dataset with higher values
            salesChart.data.datasets[1].data = data.map(value => value * 2);
            salesChart.update();
        });

// Set canvas heights for better visualization
        document.getElementById('salesChart').height = 300;
        document.getElementById('trafficChart').height = 300;
    </script>
</body>
</html>

CSS