/* Base styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f6fa;
    color: #2c3e50;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Home button */
.home-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-bottom: 20px;
    transition: background-color 0.3s;
}

.home-button:hover {
    background-color: #2980b9;
}

/* Headings */
h2 {
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 28px;
}

/* Filters */
.filters {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

select, input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    font-size: 14px;
}

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.kpi-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.kpi-title {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 10px;
}

.kpi-value {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.kpi-trend {
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.trend-up {
    color: #27ae60;
}

.trend-down {
    color: #e74c3c;
}

/* Chart Grid */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.chart-container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: 400px;
}

.chart-title {
    font-size: 16px;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Export Buttons */
.export-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.export-button {
    padding: 8px 16px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.export-button:hover {
    background-color: #2980b9;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .chart-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .filter-group {
        width: 100%;
    }
    
    select, input {
        width: 100%;
    }
}