*{
margin:0;
padding:0;
box-sizing:border-box;
}

body{
font-family:Segoe UI,sans-serif;
background:#f4f4f4;
color:#222;
line-height:1.6;
transition:0.3s;
}

nav{
display:flex;
justify-content:space-between;
align-items:center;
padding:1rem;
background:#333;
}

nav a{
color:white;
text-decoration:none;
margin:0 10px;
}

header{
text-align:center;
padding:4rem 1rem;
}

.avatar{
width:180px;
height:180px;
border-radius:50%;
object-fit:cover;
margin-bottom:20px;
}

section{
padding:2rem;
max-width:1200px;
margin:auto;
}

.project-grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:20px;
margin-top:20px;
}

.project-card{
background:white;
padding:20px;
border-radius:10px;
box-shadow:0 2px 10px rgba(0,0,0,.1);
}

form{
display:flex;
flex-direction:column;
gap:15px;
}

input,
textarea{
padding:12px;
}

button{
padding:12px;
cursor:pointer;
}

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

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

.dark{
background:#111;
color:white;
}

.dark .project-card{
background:#222;
color:white;
}

@media(min-width:768px){

header{
padding:6rem;
}

}