.filter-btn{color:var(--text-muted);background:var(--bg-secondary);border:1px solid var(--border-soft)}.filter-btn:hover{color:var(--text-secondary);background:var(--bg-hover);border-color:var(--border-strong)}.filter-btn.active{color:#fff;background:linear-gradient(135deg,var(--accent-1),var(--accent-2));border-color:var(--accent-1);box-shadow:0 4px 12px #ec48994d}.tool-card{transition:all .3s cubic-bezier(.4,0,.2,1)}.tool-card.filter-hidden{opacity:0;transform:scale(.9);height:0;margin:0;padding:0;border:none;overflow:hidden}@media print{body *{visibility:hidden}#printArea,#printArea *{visibility:visible}#printArea{position:absolute;left:0;top:0;width:100%;border:none;box-shadow:none}}