:root{
--main:#2563eb;
--bg:#f5f5f5;
--text:#222;
}

body{
margin:0;
font-family:Arial, Helvetica, sans-serif;
background:var(--bg);
color:var(--text);
}

.hero{
height:400px;
background-image:url("https://images.unsplash.com/photo-1476480862126-209bfaa8edc8");
background-size:cover;
background-position:center;
position:relative;
display:flex;
align-items:center;
justify-content:center;
text-align:center;
color:white;
}

.overlay{
position:absolute;
inset:0;
background:rgba(0,0,0,0.5);
}

.hero-content{
position:relative;
z-index:2;
}

.theme-buttons button{
margin:5px;
padding:10px 15px;
border:none;
border-radius:6px;
cursor:pointer;
font-weight:bold;
}

.container{
max-width:1100px;
margin:auto;
padding:40px 20px;
display:grid;
grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
gap:20px;
}

.card{
background:white;
border-radius:10px;
overflow:hidden;
box-shadow:0 10px 25px rgba(0,0,0,0.1);
transition:0.3s;
}

.card:hover{
transform:translateY(-5px);
}

.card img{
width:100%;
height:200px;
object-fit:cover;
}

.card h2{
padding:10px 15px 0 15px;
}

.card p{
padding:10px 15px 20px 15px;
}

footer{
text-align:center;
padding:30px;
background:#111;
color:#aaa;
}