body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f4f6f8;
}

.wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    flex-shrink: 0;
}

.sidebar h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar ul li {
    padding: 10px;
    cursor: pointer;
    background-color: #34495e;
    margin-bottom: 10px;
    border-radius: 5px;
}

.sidebar ul li:hover {
    background-color: #1abc9c;
}

.content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.content h1 {
    color: #333;
    margin-bottom: 20px;
}

.chart-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.chart-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 800px;
}

canvas {
    max-width: 100%;
}