body{margin:0;font-family:Arial;background:#f4f6f9;}
.sidebar{width:220px;height:100vh;background:#1e293b;color:white;position:fixed;padding:20px;}
.sidebar a{display:block;color:white;text-decoration:none;padding:10px;margin:5px 0;background:#334155;border-radius:5px;}
.sidebar a:hover{background:#475569;}
.main{margin-left:240px;padding:30px;}
.cards{display:flex;gap:20px;flex-wrap:wrap;}
.card{background:white;padding:25px;width:200px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.1);}
.login-box{width:300px;margin:100px auto;background:white;padding:30px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.1);}
input{display:block;width:100%;margin:10px 0;padding:10px;}
button{padding:10px 20px;background:#3498db;color:white;border:none;}