body {
            background-color: #121212;
            color: #ffffff;
        }
        .container {
            margin-top: 50px;
        }
        .chart-container {
            position: relative;
            height: 400px;
            width: 100%;
        }
    


        body {
            background-color: #121212;
            color: #ffffff;
        }
        .container {
            margin-top: 20px;
        }
        .card {
            background-color: #1e1e1e;
            color: #ffffff;
            border: 1px solid #444;
            width: 250px;
            margin: 10px;
        }
        .card-text {
            color: #dddddd;
        }
        .btn {
            margin-right: 5px;
        }
        input.form-control {
            background-color: #2c2c2c;
            color: #ffffff;
        }
        input.form-control::placeholder {
            color: #aaaaaa;
        }
        input.form-control:focus {
            background-color: #333333;
            color: #ffffff;
        }
        label {
            color: #ffffff;
        }
        .modal-content {
            background-color: #2c2c2c;
            color: #ffffff;
        }
        .modal-header, .modal-footer {
            border-color: #444;
        }
        .chart-container {
            margin-top: 20px;
            margin-bottom: 20px;
            display: none;
        }
        #elements-list {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
        }
        #controls-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }
        #add-element-btn {
            margin-left: auto;
        }
        #program-name {
            width: 200px;
            margin-right: 20px;
        }
        #import-elements-file {
            width: 400px;
            display: inline-block;
        }
        #bluetooth-buttons {
            display: flex;
            gap: 5px;
        }