body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #007bff;
            color: #fff;
            margin: 0;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 800px;
            background-color: #ffffff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        h2 {
            text-align: center;
            color: #007bff;
            font-weight: bold;
            font-style: italic;
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
        }
        .legenda {
            margin-bottom: 10px;
            font-weight: bold;
            color: #007bff;
        }
        .form-control {
            margin-bottom: 10px;
            border-radius: 5px;
        }
        .btn-classic {
            color: white;
            border: none;
            border-radius: 5px;
            padding: 10px 20px;
            margin-top: 10px;
            transition: background-color 0.3s, transform 0.3s;
            display: flex;
            align-items: center;
            flex: 1;
            margin: 0 5px;
        }
        .btn-copy {
            background-color: #28a745;
        }
        .btn-copy:hover {
            background-color: #218838;
            transform: translateY(-2px);
        }
        .btn-clear {
            background-color: #dc3545;
        }
        .btn-clear:hover {
            background-color: #c82333;
            transform: translateY(-2px);
        }
        .btn-play {
            background-color: #ffc107;
        }
        .btn-play:hover {
            background-color: #e0a800;
            transform: translateY(-2px);
        }
        .btn-download {
            background-color: #17a2b8;
        }
        .btn-download:hover {
            background-color: #138496;
            transform: translateY(-2px);
        }
        .highlight {
            background-color: yellow;
            color: black;
        }
        .button-container {
            display: flex;
            justify-content: space-between;
            margin-top: 15px;
        }