.app-card{transition:all .3s ease;height:100%;border:1px solid var(--border-color)}.app-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px var(--shadow-color)}.app-icon{width:80%;height:auto;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:15px}.category-filter{margin-bottom:30px}.category-btn{margin:5px;padding:8px 15px;border-radius:20px;background-color:var(--card-background);border:1px solid var(--border-color);color:var(--font-color)}.category-btn.active,.category-btn:hover{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;border-color:var(--primary-color)}.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px;margin-top:20px}@media (max-width:768px){.app-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}