body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background: #0f172a;
    color: #fff;
}
.sidebar {
    width: 220px;
    height: 100vh;
    position: fixed;
    background: #020617;
    padding: 20px;
}
.sidebar h2 {
    color: #ffcc00;
}
.sidebar a {
    display: block;
    color: #ccc;
    padding: 10px;
    text-decoration: none;
}
.sidebar a:hover {
    background: #1e293b;
    color: #ffcc00;
}
.main {
    margin-left: 240px;
    padding: 20px;
}
.card {
    background: #1e293b;
    padding: 20px;
    border-radius: 10px;
    margin: 10px 0;
}
button {
    background: #ffcc00;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 5px;
}
input, select {
    padding: 10px;
    width: 100%;
    margin: 10px 0;
    border-radius: 5px;
    border: none;
}
img {
    max-width: 150px;
    margin-top: 10px;
}