*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Segoe UI,Tahoma,sans-serif;
}

body{
background:#0f172a;
color:#f1f5f9;
line-height:1.6;
}

header{
background:linear-gradient(90deg,#2563eb,#7c3aed);
padding:40px;
text-align:center;
}

nav{
background:#1e293b;
text-align:center;
padding:15px;
}

nav a{
margin:0 15px;
color:#cbd5e1;
text-decoration:none;
}

nav a:hover{
color:#38bdf8;
}

.card{
background:#1e293b;
margin:40px auto;
padding:30px;
border-radius:10px;
width:85%;
max-width:1000px;
}

.card h2{
color:#38bdf8;
margin-bottom:20px;
}

.card img{
width:100%;
border-radius:8px;
}

.folder{
cursor:pointer;
padding:10px;
margin-top:10px;
background:#334155;
border-radius:6px;
}

.folder:hover{
background:#2563eb;
}

.files{
display:none;
padding-left:20px;
margin-top:10px;
}

.files a{
display:block;
color:#38bdf8;
margin:5px 0;
text-decoration:none;
}

footer{
text-align:center;
padding:20px;
margin-top:40px;
background:#1e293b;
}