.geometry-canvas { width: 100%; height: auto; background-color: #f9f9f9; border: 1px solid #ddd; border-radius: 8px; margin-top: 1.5rem; display: block; }
        .canvas-container { text-align: center; margin-top: 1rem; }
        .legend { display: flex; justify-content: center; gap: 2rem; margin: 0.5rem 0; font-size: 0.9rem; flex-wrap: wrap; }
        .legend-item { display: flex; align-items: center; gap: 0.3rem; }
        .legend-color { width: 16px; height: 16px; border-radius: 50%; }
        .legend-color.eq { background-color: #e67e22; }
        .legend-color.curve { background-color: #2c3e50; width: 20px; height: 2px; border-radius: 0; }
        .legend-color.endpoint { background-color: #e74c3c; }
        .acid-base-select {  margin-top: 0.25rem; }
        .temp-note { font-size: 0.8rem; color: #6c757d; margin-left: 0.5rem; font-weight: normal; }
        .weak-acid-card { background: #fef9e6; border-left: 6px solid #e67e22; margin-top: 2rem; border-radius: 8px; }
        .weak-acid-card .card-header { background-color: #faf3e0; font-weight: bold; border-bottom: 1px solid #e6d5b8; }
        .unit-badge { font-size: 0.7rem; background-color: #e9ecef; border-radius: 12px; padding: 0.2rem 0.6rem; margin-left: 0.5rem; vertical-align: middle; }
        .form-text.unit-warning { font-size: 0.75rem; color: #e67e22; }
        .btn-outline-primary { color: #2c7da0; border-color: #2c7da0; }
        .btn-outline-primary:hover { background-color: #2c7da0; border-color: #2c7da0; }