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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.chart-container {
    height: 200px;
    margin-bottom: 15px;
}

.current-value {
    font-size: 1.8rem;
    font-weight: bold;
    text-align: center;
    margin: 15px 0;
    color: #2c3e50;
}

.status {
    text-align: center;
    padding: 8px;
    border-radius: 5px;
    font-weight: bold;
}

.status.excellent {
    background-color: #d4edda;
    color: #155724;
}

.status.good {
    background-color: #d1ecf1;
    color: #0c5460;
}

.status.moderate {
    background-color: #fff3cd;
    color: #856404;
}

.status.poor {
    background-color: #f8d7da;
    color: #721c24;
}

.status.very-poor {
    background-color: #721c24;
    color: #ffffff;
}

footer {
    text-align: center;
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .card {
        margin-bottom: 20px;
    }
}