body {
margin:0;
font-family:sans-serif;
color:#fff;
background:#0a0a0a;
}

.navbar {
display:flex;
justify-content:space-between;
padding:15px;
background:rgba(0,0,0,0.8);
position:fixed;
width:100%;
z-index:10;
}

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

.hero {
height:100vh;
background:linear-gradient(-45deg,#0f2027,#203a43,#2c5364);
background-size:400% 400%;
animation:gradient 10s ease infinite;
display:flex;
align-items:center;
justify-content:center;
text-align:center;
}

@keyframes gradient {
0% {background-position:0% 50%;}
50% {background-position:100% 50%;}
100% {background-position:0% 50%;}
}

section {
padding:80px 20px;
text-align:center;
}

.cards {
display:grid;
grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
gap:20px;
}

.card {
background:#111;
padding:30px;
border-radius:10px;
transition:0.3s;
}

.card:hover {
transform:translateY(-10px);
background:#1f1f1f;
}

iframe {
width:100%;
height:300px;
border:0;
}

footer {
padding:20px;
background:#000;
text-align:center;
}