*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:tahoma;
}

body{
    background:#0f172a;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}

.login-box{
    width:350px;
    background:#ffffff;
    padding:30px;
    border-radius:15px;
    box-shadow:0 0 20px rgba(0,0,0,0.2);
}

.logo{
    text-align:center;
    margin-bottom:25px;
    font-size:28px;
    font-weight:bold;
    color:#2563eb;
}

.input-group{
    margin-bottom:20px;
}

.input-group label{
    display:block;
    margin-bottom:8px;
    color:#333;
    font-size:14px;
}

.input-group input{
    width:100%;
    padding:12px;
    border:1px solid #ccc;
    border-radius:10px;
    font-size:15px;
}

button{
    width:100%;
    padding:12px;
    border:none;
    background:#2563eb;
    color:#fff;
    border-radius:10px;
    font-size:16px;
    cursor:pointer;
}

button:hover{
    background:#1d4ed8;
}

.error{
    background:#fee2e2;
    color:#b91c1c;
    padding:10px;
    border-radius:10px;
    margin-bottom:15px;
    text-align:center;
}

.footer{
    margin-top:20px;
    text-align:center;
    font-size:13px;
    color:#666;
}