.ipa-trainer-tool{--bg:#0c0f14;--surface:#151a22;--border:#2a3344;--text:#e8edf5;--muted:#8b95a8;--accent:#5b9cf5;--success:#6ee7a8;--success-muted:rgba(110,231,168,.12);--danger:#f87171;--danger-muted:hsla(0,91%,71%,.12)}.ipa-trainer-tool .ipa-flip-scene{perspective:1200px;border-radius:.75rem;overflow:hidden}.ipa-trainer-tool .ipa-flip-inner{transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1)}.ipa-trainer-tool .ipa-flip-inner.ipa-flip-inner--open{transform:rotateY(180deg)}.ipa-trainer-tool .ipa-flip-face{backface-visibility:hidden;-webkit-backface-visibility:hidden}.ipa-trainer-tool .ipa-flip-back{transform:rotateY(180deg)}