body{color:#fff;background:#1a002b;margin:0;font-family:Arial,Helvetica,sans-serif}h1,h2,h3{color:#d4af37}button{color:#000;cursor:pointer;background:#d4af37;border:none;border-radius:8px;padding:12px 18px;font-weight:700}.navbar{color:gold;background:#2b0040;padding:15px}.sidebar{background:#000;border-right:2px solid #d4af37;width:250px;min-height:100vh;padding:20px}.card{background:#12001f;border:1px solid #d4af37;border-radius:10px;margin-top:20px;padding:20px}