*{box-sizing:border-box}

body{
margin:0;
font-family:Arial,Helvetica,sans-serif;
background:#0b0b0b;
color:white;
overflow-x:hidden;
}

.navbar{
display:flex;
justify-content:space-between;
align-items:center;
padding:20px 40px;
background:rgba(0,0,0,0.6);
backdrop-filter:blur(10px);
position:sticky;
top:0;
z-index:10;
}

.nav-links a{
margin-right:20px;
text-decoration:none;
color:white;
opacity:.8;
}

.nav-links a:hover{opacity:1}

.lang-switch button{
background:none;
border:none;
font-size:18px;
cursor:pointer;
margin-left:5px;
}

.hero{
height:60vh;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
text-align:center;
padding:20px;
}

.hero h1{font-size:50px;margin-bottom:10px}

.marquee{
overflow:hidden;
white-space:nowrap;
border-top:1px solid rgba(255,255,255,0.1);
border-bottom:1px solid rgba(255,255,255,0.1);
padding:20px 0;
}

.marquee-content{
display:inline-block;
animation:scroll 25s linear infinite;
}

.marquee span{
margin-right:60px;
opacity:.7;
}

@keyframes scroll{
0%{transform:translateX(0)}
100%{transform:translateX(-50%)}
}

.tech,.projects,.contact{
padding:80px 10%;
}

.stack{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:30px;
}

.stack-card{
border:1px solid rgba(255,255,255,0.1);
padding:30px;
border-radius:10px;
transition:.4s;
}

.stack-card:hover{
transform:translateY(-8px);
background:rgba(255,255,255,0.05);
}

.filters{
margin:20px 0;
}

.filters button{
margin-right:10px;
padding:8px 16px;
background:#1f1f1f;
border:none;
color:white;
cursor:pointer;
border-radius:6px;
}

.projects-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
gap:30px;
}

.project-card{
background:#111;
border-radius:10px;
overflow:hidden;
transition:.4s;
}

.project-card:hover{
transform:translateY(-10px);
}

.project-card img{
width:100%;
height:180px;
object-fit:cover;
}

.project-info{
padding:15px;
}

.contact-links a{
display:inline-block;
margin-right:15px;
margin-top:10px;
color:white;
text-decoration:none;
opacity:.8;
}

.contact-links a:hover{opacity:1}

.fade-up{
opacity:0;
transform:translateY(40px);
transition:all .8s ease;
}

.fade-up.show{
opacity:1;
transform:translateY(0);
}

@media(max-width:768px){

.navbar{
flex-direction:column;
gap:10px;
}

.hero h1{
font-size:36px;
}

.tech,.projects,.contact{
padding:60px 20px;
}

}