body {
    font-family: 'Roboto', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}
.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h1, h2, h3 {
    text-align: center;
    color: #333;
}
#dataInput {
    width: 100%;
    height: 150px;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: 'Roboto', Arial, sans-serif;
    resize: vertical;
}
#fileInput {
    width: 100%;
    margin-bottom: 10px;
    font-family: 'Roboto', Arial, sans-serif;
}
#metricSelector {
    margin-bottom: 20px;
}
#metricCheckboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.metric-checkbox {
    display: flex;
    align-items: center;
    margin-right: 10px;
}
.metric-checkbox input {
    margin-right: 5px;
}
button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Roboto', Arial, sans-serif;
    font-weight: bold;
    transition: background-color 0.3s;
}
button:hover {
    background-color: #45a049;
}
#chartContainer {
    margin-top: 20px;
}
.chart-wrapper {
    margin-bottom: 40px;
    position: relative;
}
#errorMessage {
    color: red;
    margin-top: 10px;
    font-weight: bold;
}
.download-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #f8f9fa;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: background-color 0.3s;
}
.download-btn:hover {
    background-color: #e9ecef;
}
@media screen and (max-width: 600px) {
    .container {
        padding: 10px;
    }
    #dataInput {
        height: 100px;
    }
    h1 {
        font-size: 24px;
    }
    h2 {
        font-size: 20px;
    }
    .chart-wrapper {
        height: 300px !important;
    }
}
/*end of code*/