/* Define global styles */
body {
    font-family: 'Open Sans', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #1f77b4;
    color: white;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2em;
}

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

section {
    margin-bottom: 30px;
    padding: 20px;
    background: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

section h2 {
    margin-top: 0;
    color: #1f77b4;
}

label {
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
}

input[type="range"] {
    width: 100%;
    margin: 10px 0;
}

#controls div {
    margin-bottom: 15px;
}

#plot-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 500px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #ffffff;
}

#sankey-diagram,
#heatmap {
    width: 100%;
    height: 100%;
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #1f77b4;
    color: white;
    font-size: 0.9em;
    margin-top: 30px;
}