body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    background:#eef2f7;
    color:#222;
}

.topbar{
    background:#0f172a;
    color:#fff;
    padding:18px 30px;
    box-shadow:0 2px 6px rgba(0,0,0,.15);
}

.topbar strong{
    display:block;
    font-size:24px;
}

.topbar span{
    color:#cbd5e1;
    font-size:13px;
}

.navbar{
    background:#ffffff;
    border-bottom:1px solid #dbe2ea;
    padding:12px 30px;
}

.navbar a{
    text-decoration:none;
    color:#334155;
    font-weight:600;
    margin-right:24px;
}

.navbar a:hover{
    color:#2563eb;
}

.content{
    max-width:1200px;
    margin:30px auto;
    background:#fff;
    border-radius:10px;
    padding:30px;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

button{
    background:#2563eb;
    color:#fff;
    border:none;
    border-radius:8px;
    padding:10px 18px;
    margin:6px;
    cursor:pointer;
    font-size:14px;
}

button:hover:not(:disabled){
    background:#1d4ed8;
}

button:disabled{
    background:#cbd5e1;
    color:#64748b;
    cursor:not-allowed;
}

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

th{
    background:#0f172a;
    color:#fff;
}

th,td{
    border:1px solid #e2e8f0;
    padding:10px 12px;
    text-align:left;
}

.footer{
    margin-top:30px;
    text-align:center;
    padding:15px;
    color:#64748b;
    font-size:13px;