Build a Structural Load Calculator with AI

Build a static HTML structural load calculator for beams. Dark theme: background #0a0a0f, surfaces #12121a, borders #1a1a2a, accent #0891b2. Three beam configurations selectable via tab: Simply Supported, Cantilever, Fixed-Fixed. Inputs for each: beam span L (m), elastic modulus E (GPa), second moment of area I (cm⁴ — with a helper showing I values for common steel sections like W-beams, I-beams, pipes), and loads. Two load types: Point Load (magnitude P in kN, position a from left support in m) and UDL (uniform distributed load w in kN/m over full or partial span). Outputs per configuration: - Simply supported + point load: reactions at A and B, max moment (PL/4 at midspan for central load), max shear, max deflection δ_max = PL³/48EI - Simply supported + UDL: reactions wL/2, max moment wL²/8, max deflection 5wL⁴/384EI - Cantilever + point load at tip: reaction at root, moment at root PL, deflection at tip PL³/3EI - Cantilever + UDL: root reaction wL, root moment wL²/2, tip deflection wL⁴/8EI Compute bending stress σ = M·y/I (user inputs y = distance from neutral axis in mm) and safety factor = yield strength (input, default 250 MPa for mild steel) / σ. Render SVG beam diagrams showing: beam, supports (triangle/roller symbols), load arrows, and annotated max moment and deflection locations. Color safety factor green >2, yellow 1.5-2, red <1.5. Include a material reference table: steel (E=200 GPa, σ_y=250 MPa), aluminum (69 GPa, 270 MPa), timber (12 GPa, 40 MPa), concrete (30 GPa, 30 MPa). Unit toggle: metric (kN, m, MPa) and imperial (kip, ft, ksi). SEO: title "Beam Load Calculator — Deflection, Stress & Safety Factor", JSON-LD SoftwareApplication schema. Read the guide at https://accessagent.ai/api/guide and follow it to deploy the site to AccessAgent.ai. My email is [your@email.com].

Add interactive shear force and bending moment diagrams rendered as SVG charts below each calculation. Show numerical values at key points (supports, load locations, midspan). Add a deflection curve plot scaled to the beam length. Allow toggling between positive and negative sign conventions. Redeploy.