.venn-container {
            text-align: center;
            margin: 20px 0;
            min-height: 280px;
            background: #fafcfd;
            border-radius: 16px;
            padding: 15px;
            border: 1px solid #e2e8f0;
        }
        canvas#vennCanvas {
            max-width: 100%;
            height: auto;
            background: #ffffff;
            border-radius: 16px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .bayes-section {
            background: #f4f9fe;
            border-radius: 1rem;
            padding: 1.2rem;
            margin-top: 1.5rem;
        }
        .legend-prob {
            display: inline-flex;
            gap: 1rem;
            justify-content: center;
            font-size: 0.85rem;
        }
        .btn-copy {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            padding: 0.25rem 0.75rem;
            border-radius: 30px;
            font-size: 0.8rem;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-copy:hover {
            background: #e9ecef;
        }