@keyframes lessonGlow{0%,to{box-shadow:0 0 20px rgba(62,203,255,.6),0 0 40px rgba(16,185,129,.4);transform:scale(1.05)}50%{box-shadow:0 0 30px rgba(62,203,255,.8),0 0 60px rgba(16,185,129,.6);transform:scale(1.08)}}.lesson-glow{animation:lessonGlow 1.5s ease-in-out infinite}.lesson-glow-background{background:linear-gradient(45deg,#3ecbff,#10b981,#3ecbff)!important;background-size:200% 200%!important;animation:lessonGlow 1.5s ease-in-out infinite,gradientShift 2s ease-in-out infinite!important}@keyframes gradientShift{0%,to{background-position:0 50%}50%{background-position:100% 50%}}