* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 10px;
    overflow: hidden;
}

.a4-container {
    max-width: 1400px;
    height: calc(100vh - 20px);
    margin: 0 auto;
    background: white;
    padding: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    overflow: hidden;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 12px;
    height: calc(100vh - 50px);
    width: 100%;
}

.chart-card {
    background: #f7fafc;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chart-card h2 {
    font-size: 1rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 6px;
    padding-left: 8px;
    border-left: 3px solid #667eea;
    flex-shrink: 0;
}

.chart-wrapper {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

@media print {
    @page {
        size: A4 landscape;
        margin: 8mm;
    }

    body {
        background: white;
        padding: 0;
        overflow: visible;
    }

    .a4-container {
        max-width: 100%;
        width: 281mm;
        height: 190mm;
        padding: 6mm;
        box-shadow: none;
        border-radius: 0;
        page-break-after: avoid;
    }

    .chart-grid {
        gap: 6px;
        height: 178mm;
    }

    .chart-card {
        padding: 6px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        page-break-inside: avoid;
        break-inside: avoid;
    }

    .chart-card h2 {
        font-size: 0.9rem;
        margin-bottom: 4px;
    }

    .js-plotly-plot {
        width: 100% !important;
    }

    .js-plotly-plot .plotly {
        width: 100% !important;
    }
}