body{margin:0;font-family:Arial,sans-serif;background:#121212;color:#fff;}
.sidebar{width:200px;background:#1f1f1f;height:100vh;position:fixed;padding:20px;}
.sidebar h2{color:#7F5AF0;}
.sidebar ul{list-style:none;padding:0;}
.sidebar ul li a{color:#ccc;text-decoration:none;display:block;padding:10px 0;}
.sidebar ul li a:hover{color:#7F5AF0;}
.main{margin-left:220px;padding:20px;}
h1{color:#7F5AF0;}
.charts canvas{background:#1f1f1f;margin:10px 0;border-radius:8px;padding:10px;width:100%!important;height:400px;}