body{
 font-family:Arial;
 background:#f4f6f9;
 margin:0;
}
.sidebar{
 width:250px;
 height:100vh;
 background:#2d2df5;
 position:fixed;
 color:#fff;
 padding:20px;
}
.sidebar a{
 display:block;
 color:#fff;
 text-decoration:none;
 padding:12px;
 margin-bottom:10px;
 border-radius:8px;
}
.main{
 margin-left:270px;
 padding:20px;
}
.card{
 background:#fff;
 padding:20px;
 border-radius:12px;
 margin-bottom:20px;
 box-shadow:0 2px 10px rgba(0,0,0,0.1);
}
button{
 background:#2d2df5;
 color:#fff;
 border:none;
 padding:12px 20px;
 border-radius:8px;
 cursor:pointer;
}
input{
 width:100%;
 padding:12px;
 margin-top:10px;
 border:1px solid #ddd;
 border-radius:8px;
}
table{
 width:100%;
 border-collapse:collapse;
}
table th,table td{
 padding:10px;
 border-bottom:1px solid #ddd;
}