body.dark-mode {
    background-color: #1e1e1e;
    color: #f1f1f1;
}

#behavior-chart-app {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}

.behavior-form {
    background: #2c2c2c;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
}

.behavior-form label {
    display: block;
    margin-bottom: 10px;
    font-weight: bold;
}

.chart-container {
    background: #2c2c2c;
    margin-top: 30px;
    padding: 20px;
    border-radius: 10px;
}

.toggle-container {
    text-align: right;
    margin-bottom: 10px;
}