body {
margin:0;
font-family:Arial;
background:#111;
color:white;
text-align:center;
}

.navbar {
display:flex;
justify-content:space-between;
padding:15px 30px;
background:#1c1c1c;
}

.logo { font-weight:bold; }

.hero { padding:80px 20px; }

.grid {
display:grid;
grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
gap:20px;
max-width:800px;
margin:40px auto;
}

.card {
background:#1f1f1f;
padding:30px;
border-radius:10px;
}

.card h2 { color:#00D4FF; }

.btn {
background:#00D4FF;
padding:8px 15px;
border-radius:5px;
color:black;
text-decoration:none;
margin:5px;
display:inline-block;
}

.box {
background:#1c1c1c;
padding:30px;
margin:50px auto;
max-width:500px;
border-radius:10px;
}

input, textarea, select {
width:100%;
padding:10px;
margin:10px 0;
border:none;
border-radius:5px;
}

button {
padding:10px;
background:#00D4FF;
border:none;
border-radius:5px;
cursor:pointer;
}

.error { color:red; }