:root{--primary-blue: #0077be;--primary-green: #00b050;--dark: #1a1a1a;--light: #f4f4f4;--white: #ffffff}*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{line-height:1.6;color:var(--dark);background-color:var(--white)}a{text-decoration:none;color:inherit}ul{list-style:none}.container{max-width:1100px;margin:0 auto;padding:0 20px}.btn{padding:10px 20px;border-radius:5px;font-weight:700;transition:.3s;cursor:pointer;display:inline-block}.btn-primary{background:var(--primary-blue);color:var(--white);border:none}.btn-primary:hover{background:#005fa3}.btn-outline{border:2px solid var(--primary-green);color:var(--primary-green);background:transparent}.btn-outline:hover{background:var(--primary-green);color:var(--white)}.section-title{text-align:center;margin-bottom:50px;font-size:2rem}.nav-links{display:flex;align-items:center;gap:20px}.mobile-toggle{display:none;font-size:1.5rem;cursor:pointer;-webkit-user-select:none;user-select:none;z-index:1200}@media(max-width:768px){.nav-links{display:none;position:absolute;top:70px;left:0;width:100%;background:#fff;flex-direction:column;align-items:center;padding:20px 0;box-shadow:0 5px 15px #0000001a;gap:20px;z-index:1000}.nav-links.active{display:flex}.mobile-toggle{display:block}}.filter-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:15px;margin-bottom:40px}.filter-btn{padding:10px 20px;background:var(--light);border:2px solid transparent;border-radius:50px;cursor:pointer;font-weight:600;transition:all .3s ease;display:flex;align-items:center;gap:8px}.filter-btn:hover{background:#e0e0e0}.filter-btn.active{background:var(--dark);color:var(--white)}.filter-btn.fab.active{background:var(--primary-blue);color:var(--white)}.filter-btn.connect.active{background:var(--primary-green);color:var(--white)}.portfolio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:30px}.portfolio-card{background:var(--white);border-radius:10px;box-shadow:0 4px 15px #00000014;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}.portfolio-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px #0000001f}.portfolio-card img{width:100%;height:220px;object-fit:cover;display:block}.portfolio-card .card-content{padding:20px}.portfolio-card .tag{display:inline-block;padding:4px 12px;border-radius:50px;font-size:.8rem;font-weight:700;margin-bottom:10px;color:var(--white)}.portfolio-card .tag.fab{background:var(--primary-blue)}.portfolio-card .tag.connect{background:var(--primary-green)}.portfolio-card h3{margin-bottom:8px}.portfolio-card p{font-size:.9rem;color:#555}