* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Arial, sans-serif;
    font-size: 12px;
    background: #f4f4f4;
}
.admin {
    width: 700px;
    min-height: 245px;
    margin: 20px auto;
    display: flex;
}
aside {
    width: 150px;
    background: #2c4054;
    color: white;
    padding: 10px;
}
aside h2 { margin: 0 0 18px; }
aside a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 6px 0;
}
main {
    flex: 1;
    padding: 15px 20px;
    background: #f4f4f4;
}
main h1 { margin: 0 0 8px; }
.stats {
    display: flex;
    gap: 10px;
}
.stats div {
    flex: 1;
    padding: 14px;
    background: white;
    border-radius: 5px;
    box-shadow: 0 2px 8px #ddd;
}
.stats b, .stats span { display: block; }
.stats span { margin-top: 5px; }
.list-title { margin: 5px 0; }
table {
    width: 100%;
    border-collapse: collapse;
}
th {
    text-align: left;
    background: #e8eeee;
}
td, th {
    padding: 8px;
    border-bottom: 1px solid #ddd;
}