body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f7fa;
    color: #333;
}
.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
}
h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}
.chart-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 40px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    page-break-inside: avoid;
}
.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}
.controls {
    text-align: right;
    margin-bottom: 20px;
}
.btn {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.btn:hover {
    background-color: #2980b9;
}

/* Print Styles */
@media print {
    .hide-on-print {
        display: none !important;
    }
    body {
        background-color: white;
        padding: 0;
    }
    .dashboard-container {
        max-width: 100%;
    }
    .chart-card {
        box-shadow: none;
        border: 1px solid #eee;
        margin-bottom: 20px;
        break-inside: avoid;
        page-break-inside: avoid;
    }
    h1 {
        margin-top: 0;
    }
}