body{
font-family: Arial, sans-serif;
margin:0;
background:#f5f5f5;
color:#333;
}

a{
text-decoration:none;
color:#333;
}

/* header */

.header{
background:white;
border-bottom:1px solid #ddd;
}

.header-inner{
max-width:1100px;
margin:auto;
display:flex;
align-items:center;
justify-content:space-between;
padding:15px;
}

.logo{
font-size:22px;
}

.nav ul{
display:flex;
gap:20px;
list-style:none;
margin:0;
padding:0;
}

/* container */

.container{
max-width:1100px;
margin:auto;
display:flex;
gap:30px;
padding:30px 15px;
}

/* main */

.main{
flex:3;
}

/* sidebar */

.sidebar{
flex:1;
}

/* card */

.card-grid{
display:grid;
grid-template-columns:repeat(2,1fr);
gap:20px;
}

.card{
background:white;
padding:15px;
border-radius:6px;
box-shadow:0 2px 5px rgba(0,0,0,0.1);
}

.card img{
width:100%;
border-radius:5px;
}

/* widget */

.widget{
background:white;
padding:20px;
margin-bottom:20px;
border-radius:6px;
}

/* footer */

.footer{
text-align:center;
padding:20px;
background:#222;
color:white;
}

/* hamburger */

.hamburger{
display:none;
flex-direction:column;
cursor:pointer;
}

.hamburger span{
width:25px;
height:3px;
background:black;
margin:4px 0;
}

/* responsive */

@media(max-width:768px){

.container{
flex-direction:column;
}

.card-grid{
grid-template-columns:1fr;
}

.nav{
display:none;
position:absolute;
top:60px;
left:0;
width:100%;
background:white;
border-bottom:1px solid #ddd;
}

.nav ul{
flex-direction:column;
padding:20px;
}

.nav.active{
display:block;
}

.hamburger{
display:flex;
}

}