/* Original Nova purple palette. Keep answer-only feedback and avatar motion. */
html:root{--purple:#7047ff;--accent:#7047ff}
html body article#activity:is(.correct,.incorrect){border-color:transparent;background:#fff}
html body #activity.correct :is(.choices button.selected,.practice-choices button.selected,input#answer,textarea#answer,.answer,#recall-input,.chunk-answer){border-color:#219a69;background:#e9f7ef;color:#14532d;opacity:1;box-shadow:inset 0 0 0 1px #219a69}
html body #activity.incorrect :is(.choices button.selected,.practice-choices button.selected,input#answer,textarea#answer,.answer,#recall-input,.chunk-answer){border-color:#c74d4d;background:#fff0f0;color:#9b1c1c;opacity:1;box-shadow:inset 0 0 0 1px #c74d4d}
.nova-animated-avatar.nova-avatar-active{animation:nova-avatar-float 5s ease-in-out infinite}
@keyframes nova-avatar-float{0%,100%{translate:0 0}50%{translate:0 -2px}}
@media(prefers-reduced-motion:reduce){.nova-animated-avatar.nova-avatar-active{animation:none}}