.card{background-color:#fff;border-radius:10px;padding:20px;margin-top:30px;box-shadow:0 4px 12px rgba(0,0,0,.08)}.card h3{margin-bottom:10px;color:#007bff;font-weight:600}.card p{margin:8px 0;font-size:15px;color:#444}.error{color:red;font-weight:500;margin-top:15px}