:root{--bg:#f5f7fb;--text:#111;--card:#fff;--primary:#2563eb;--secondary:#7c3aed;--accent:#00e6ff;--shadow:rgba(0,0,0,.25);--shadow-dark:hsla(0,0%,100%,.25)}.btn-cta{background:linear-gradient(90deg,var(--primary),var(--secondary),var(--primary));background-size:200% 100%;border-radius:8px;color:#fff;padding:12px 26px}.btn-cta:not(:disabled){animation:shimmer 2s linear infinite}@keyframes shimmer{0%{background-position:0}to{background-position:200%}}@keyframes pulseRing{0%{box-shadow:0 0 0 0 rgba(0,255,255,.6)}70%{box-shadow:0 0 0 15px rgba(0,255,255,0)}to{box-shadow:0 0 0 0 rgba(0,255,255,0)}}.btn-cta:hover{animation:pulseRing 1.2s;filter:brightness(1.15)}.btn-cta:active{transform:scale(.9)}.btn-cta:disabled{opacity:.5;pointer-events:none}.combo-btn{background:transparent;border-radius:50px;cursor:pointer;font-size:16px;overflow:hidden;padding:15px 20px;position:relative;transition:.3s ease}._abh{border:2px solid #06b6d4;color:#06b6d4}._abh:before{background:#06b6d4;content:"";height:100%;left:-100%;position:absolute;top:0;transition:.3s;width:100%;z-index:-1}._abh:hover:before{left:0}._abh:hover{border-radius:10px;color:#000}._abh:active:before{background:#f59e0b;left:0}._abh:active{color:#000;transform:scale(.9)}