body {
       min-height: 100vh;
       display: flex;
       align-items: center;
       justify-content: center;
   }

    .form-card {
        max-width: 600px; 
        margin: 50px auto;
        background: white;
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }