*{box-sizing:border-box;font-family:Arial}
body{
    margin:0;background:#f4f6f8;
    display:flex;justify-content:center;align-items:center;
    min-height:100vh;
}
.auth-box{
    width:100%;max-width:380px;
    background:#fff;padding:25px;
    border-radius:10px;
    box-shadow:0 6px 20px rgba(0,0,0,.1);
}
.auth-box h2{text-align:center;color:#0f693c}
.auth-box input{
    width:100%;padding:12px;margin:10px 0;
    border:1px solid #ccc;border-radius:6px;
}
.auth-btn{
    width:100%;padding:12px;
    background:#0f693c;color:#fff;
    border:none;border-radius:6px;
}
.auth-links{text-align:center;margin-top:10px}
.auth-links a{color:#0f693c;text-decoration:none}
.auth-error{background:#ffe5e5;color:#b30000;padding:10px}