*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:"Segoe UI",sans-serif;
}

body{
    height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;

    background:linear-gradient(135deg,#2563eb,#60a5fa);
}

.login-box{

    width:360px;

    background:white;

    padding:40px;

    border-radius:18px;

    box-shadow:0 20px 40px rgba(0,0,0,.15);
}

.login-box h1{
    color:#2563eb;
    text-align:center;
    margin-bottom:8px;
}

.login-box p{
    text-align:center;
    color:#666;
    margin-bottom:30px;
}

.input-group{
    margin-bottom:18px;
}

.input-group label{
    display:block;
    margin-bottom:6px;
    font-size:14px;
    color:#444;
}

.input-group input{

    width:100%;

    padding:12px 14px;

    border:1px solid #d1d5db;

    border-radius:10px;

    font-size:15px;

    transition:.2s;
}

.input-group input:focus{

    outline:none;

    border-color:#2563eb;

    box-shadow:0 0 0 3px rgba(37,99,235,.15);

}

button{

    width:100%;

    border:none;

    background:#2563eb;

    color:white;

    padding:13px;

    border-radius:10px;

    font-size:15px;

    cursor:pointer;

    transition:.25s;
}

button:hover{

    background:#1d4ed8;

}

.error{

    display:block;

    margin-top:15px;

    text-align:center;

    color:#dc2626;

    font-size:14px;
}