body{
    font-family: Arial;
    background:#0f172a;
    color:#fff;
}

.login-box, .container{
    width:90%;
    max-width:1000px;
    margin:40px auto;
    background:#1e293b;
    padding:20px;
    border-radius:10px;
}

h2,h3{
    text-align:center;
}

input, select, button{
    width:100%;
    padding:10px;
    margin:6px 0;
    border:none;
    border-radius:5px;
}

button{
    background:#22c55e;
    color:#000;
    font-weight:bold;
    cursor:pointer;
}

button:hover{
    background:#16a34a;
}

.card{
    display:inline-block;
    width:23%;
    margin:5px;
    padding:15px;
    background:#334155;
    border-radius:8px;
    text-align:center;
    font-size:18px;
}

table{
    width:100%;
    border-collapse:collapse;
    margin-top:20px;
}

th, td{
    padding:10px;
    border-bottom:1px solid #555;
    text-align:left;
}

th{
    background:#1e293b;
}

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

.err{color:red; text-align:center;}