.factor-badge { display: inline-block; background: #e9ecef; padding: 0.2rem 0.6rem; border-radius: 20px; margin: 0.2rem; font-family: monospace; }
        .prime-badge { background: #d4edda; color: #155724; }
        .common-badge { background: #f8d7da; color: #721c24; }
        .gcd-result { font-size: 1.4rem; font-weight: 600; }
        .venn-canvas { background: #fef9e8; border-radius: 12px; border: 1px solid #dee2e6; margin-top: 0.5rem; }
        .legend-item span { margin-right: 5px; }