body{background:#050507;color:#fff;font-family:sans-serif} .layout{display:flex} .sidebar{width:220px;background:#0b0b10;padding:10px} .main{flex:1;padding:20px} .btn{background:#fbbf24;color:#000;padding:10px;border-radius:8px} .card{background:#111;padding:15px;border-radius:12px;margin-bottom:15px}