body{margin:0;font-family:Arial;background:#0f172a;color:white;display:flex;}
.sidebar{width:260px;background:#111827;padding:20px;height:100vh;overflow:auto;}
button{padding:10px;width:100%;margin-bottom:10px;background:#4f46e5;color:white;border:none;border-radius:8px;cursor:pointer}
.main{flex:1;padding:20px;}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.card{background:#1f2937;padding:15px;border-radius:10px;}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px;}
.box{background:#1f2937;padding:15px;border-radius:10px;}
.item{padding:8px;border-bottom:1px solid #333;font-size:14px;}