body{margin:0;font-family:Arial,sans-serif;background:#f4f4f4}.container{padding:1rem}.navbar{display:flex;justify-content:space-between;align-items:center;background:#333;padding:1rem;color:#fff}.logo{font-size:1.5rem}.nav-links{list-style:none;display:flex;margin:0;padding:0}.nav-links li{margin-left:1rem}.nav-links a{color:#fff;text-decoration:none}.hamburger{display:none;font-size:1.5rem;cursor:pointer}#toggle{display:none}@media (max-width: 600px){.nav-links{position:absolute;top:60px;left:0;width:100%;flex-direction:column;background:#333;max-height:0;overflow:hidden;transition:max-height .3s ease-in}.nav-links li{margin:1rem 0;text-align:center}#toggle:checked~.nav-links{max-height:300px}.hamburger{display:block}}.signup-form{max-width:400px;margin:2rem auto;padding:2rem;background:#fff;border-radius:8px;box-shadow:0 2px 6px #0000001a}.signup-form h2{text-align:center;margin-bottom:1rem}.form-group{margin-bottom:1rem;display:flex;flex-direction:column}.form-group label{margin-bottom:.5rem;font-weight:500}.form-group input{padding:.5rem;border:1px solid #ccc;border-radius:4px}.error{color:red;font-size:.85rem}button{width:100%;padding:.75rem;background:#007bff;color:#fff;border:none;border-radius:4px;font-size:1rem;cursor:pointer}button:hover{background:#0069d9}.user-card{max-width:300px;margin:2rem auto;padding:1rem;background:#fff;border-radius:8px;box-shadow:0 2px 6px #0000001a;text-align:center}.user-card h3{margin:0 0 .5rem}.user-card p{margin:0;color:#555}