*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial,Helvetica,sans-serif;
}

body{
  background:linear-gradient(180deg,#020617,#071a2f);
  height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
  color:#fff;
}

.auth-box{
  width:360px;
  background:#0f223a;
  padding:35px;
  border-radius:18px;
  box-shadow:0 20px 50px rgba(0,0,0,.6);
  text-align:center;
}

.auth-box h1{
  margin-bottom:5px;
}

.auth-box p{
  opacity:.7;
  margin-bottom:25px;
}

.auth-box input{
  width:100%;
  padding:14px;
  margin-bottom:14px;
  border:none;
  border-radius:10px;
  background:#020617;
  color:#fff;
}

.auth-box button{
  width:100%;
  padding:14px;
  border:none;
  border-radius:10px;
  background:#0ea5e9;
  color:#fff;
  font-weight:bold;
  cursor:pointer;
}

.auth-box button:hover{
  opacity:.9;
}

.auth-box span{
  display:block;
  margin-top:20px;
  font-size:14px;
}

.auth-box a{
  color:#38bdf8;
  text-decoration:none;
}