*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background:#f0f2f5;min-height:100vh;display:flex;align-items:center;justify-content:center}.container{width:100%;max-width:400px;padding:20px}.form-container{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 4px #0000001a}.hidden{display:none}h2{margin-bottom:1.5rem;color:#1a1a1a;text-align:center}form{display:flex;flex-direction:column;gap:1rem}input{padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}input:focus{outline:none;border-color:#06c}button{background:#06c;color:#fff;padding:.75rem;border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background-color .2s}button:hover{background:#0052a3}p{margin-top:1rem;text-align:center;color:#666}a{color:#06c;text-decoration:none}a:hover{text-decoration:underline}