:root{--tk-slate:#0f172a;--tk-slate-light:#1e293b;--tk-teal:#0d9488;--tk-teal-light:#14b8a6;--tk-teal-dark:#0f766e;--tk-accent:#14b8a6}.tk-btn-shine{position:relative;overflow:hidden}.tk-btn-shine:before{content:"";background:linear-gradient(90deg,#0000,#ffffff40,#0000);width:100%;height:100%;transition:left .5s;position:absolute;top:0;left:-100%}.tk-btn-shine:hover:before{left:100%}