*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background:#f7f7f8;color:#1a1a1a}button,input{font:inherit}.auth-card{max-width:360px;margin:80px auto;padding:32px;background:white;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.1)}.auth-card h1{font-size:20px;margin-bottom:20px}.auth-card label{display:block;font-size:13px;margin-bottom:6px;color:#555}.auth-card input{width:100%;padding:10px 12px;margin-bottom:16px;border:1px solid #ddd;border-radius:8px}.auth-card button{width:100%;padding:10px 12px;background:#16a34a;color:white;border:none;border-radius:8px;cursor:pointer;font-weight:600}.auth-card .error{color:#dc2626;font-size:13px;margin-bottom:12px}.auth-card .switch{margin-top:16px;font-size:13px;text-align:center}