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

body{
    background:#f4f4f4;
    overflow:hidden;
    color:#111;
}

.login-page{
    width:100%;
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
}

.login-box{
    width:100%;
    max-width:420px;
    background:#fff;
    border-radius:28px;
    padding:35px;
    box-shadow:0 10px 40px rgba(0,0,0,.08);
    border:1px solid #e5e5e5;
}

.login-box h2{
    font-size:36px;
    font-weight:900;
    margin-bottom:8px;
    color:#111;
}

.login-box p{
    color:#666;
    margin-bottom:28px;
    font-size:15px;
}

.error{
    background:#ffe5e5;
    color:#d8000c;
    padding:14px;
    border-radius:14px;
    margin-bottom:18px;
    font-size:14px;
    font-weight:700;
    border:1px solid #ffbaba;
}

.login-box form{
    display:flex;
    flex-direction:column;
    gap:16px;
}

.login-box input{
    width:100%;
    height:54px;
    border:1px solid #ddd;
    border-radius:16px;
    padding:0 16px;
    font-size:15px;
    background:#fafafa;
    transition:.2s;
}

.login-box input:focus{
    outline:none;
    border-color:#111;
    background:#fff;
}

.login-box button{
    width:100%;
    height:56px;
    border:none;
    border-radius:18px;
    background:#111;
    color:#fff;
    font-size:16px;
    font-weight:800;
    cursor:pointer;
    transition:.2s;
}

.login-box button:hover{
    opacity:.92;
    transform:translateY(-1px);
}

@media(max-width:768px){

    .login-page{
        padding:18px;
    }

    .login-box{
        padding:28px 22px;
        border-radius:24px;
    }

    .login-box h2{
        font-size:30px;
    }

}