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

body{
    background:#f5f5f5;
}

.header{
    background:#005daa;
    color:white;
    padding:15px 20px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
}

.header nav a{
    color:white;
    text-decoration:none;
    margin-left:15px;
}

.container{
    padding:20px;
}

.footer{
    text-align:center;
    background:#222;
    color:white;
    padding:15px;
    margin-top:30px;
}

.card{
    background:white;
    padding:20px;
    border-radius:10px;
    box-shadow:0 0 10px rgba(0,0,0,.1);
}

.btn{
    background:#005daa;
    color:white;
    border:none;
    padding:10px 15px;
    border-radius:5px;
    cursor:pointer;
}

.btn:hover{
    background:#004080;
}

input,
select,
textarea{
    width:100%;
    padding:10px;
    margin-top:5px;
    margin-bottom:15px;
    border:1px solid #ccc;
    border-radius:5px;
}

@media(max-width:768px){

    .header{
        flex-direction:column;
        text-align:center;
    }

    .header nav{
        margin-top:10px;
    }

    .header nav a{
        display:block;
        margin:8px 0;
    }
}

.dashboard-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:20px;
}

.dashboard-grid .card{
    text-align:center;
}

table{
    width:100%;
    border-collapse:collapse;
    background:white;
}

table th{
    background:#005daa;
    color:white;
}

table th,
table td{
    padding:12px;
    border:1px solid #ddd;
}

table tr:hover{
    background:#f5f5f5;
}