.key-input-group {
            background-color: #f8f9fc;
            border-radius: 8px;
            padding: 1rem;
            margin-bottom: 1.5rem;
            border: 1px solid #e9ecef;
        }
        .radio-group {
            display: flex;
            gap: 2rem;
            margin: 1rem 0;
        }
        .output-area {
            font-family: 'Courier New', monospace;
            background-color: #272822;
            color: #f8f8f2;
            padding: 1rem;
            border-radius: 6px;
            font-size: 0.95rem;
            word-break: break-all;
            min-height: 120px;
        }
        .test-vector-table td {
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
        }
        .vector-badge {
            background-color: #6c757d;
            color: white;
            font-size: 0.75rem;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            cursor: pointer;
        }
        .vector-badge:hover {
            background-color: #5a6268;
        }
        .security-note {
            background-color: #fff3cd;
            border: 1px solid #ffeeba;
            color: #856404;
            padding: 1rem;
            border-radius: 4px;
        }