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: 600px;
            background-color: #ffffff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        h1 {
            text-align: center;
            color: #333;
            font-weight: bold;
            font-style: italic;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .row {
            display: flex;
            flex-direction: column;
            margin-bottom: 20px;
        }
        .form-control, .btn, .copy-btn, .clear-btn {
            width: 100%;
            padding: 10px 8px;
            font-size: 16px;
            border-radius: 5px;
            border: 1px solid #ccc;
            margin-top: 10px;
        }
        .btn, .copy-btn, .clear-btn {
            color: white;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            cursor: pointer;
        }
        .btn {
            background-color: #28a745;
        }
        .btn:hover {
            background-color: #218838;
        }
        .copy-btn {
            background-color: #17a2b8;
        }
        .copy-btn:hover {
            background-color: #138496;
        }
        .clear-btn {
            background-color: #dc3545;
        }
        .clear-btn:hover {
            background-color: #c82333;
        }
        .legenda {
            margin-bottom: 5px;
            color: #333;
        }
        textarea {
            height: 100px;
        }
        .button-group {
            display: flex;
            justify-content: space-between;
            gap: 10px;
        }