.portfolio-filters{padding:2rem 0;background:var(--bg-light);position:sticky;top:70px;z-index:100}.filters-wrapper{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.filter-btn{padding:.6rem 1.5rem;background:#fff;border:2px solid var(--border);border-radius:25px;font-weight:500;transition:var(--transition);text-decoration:none;color:var(--text)}.filter-btn.active,.filter-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.portfolio-section{padding:4rem 0}.project-link{color:var(--primary);font-weight:600;transition:var(--transition);text-decoration:none}.project-link:hover{color:var(--accent)}.project-footer{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}.empty-state{text-align:center;padding:4rem 2rem}.empty-state h2{font-size:2rem;margin-bottom:1rem;color:var(--text-light)}.project-title{font-size:1.25rem;margin:0}@media (max-width:768px){.filters-wrapper{flex-direction:column;align-items:stretch}.filter-btn{text-align:center}}