body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.sidebar {
    width: 200px;
    background-color: #007bff;
    color: white;
    height: 100vh;
    position: fixed;
    padding: 20px;
}

.sidebar h2 {
    text-align: center;
}

.sidebar a {
    display: block;
    color: white;
    padding: 10px;
    text-decoration: none;
    margin: 5px 0;
}

.sidebar a:hover {
    background-color: #0056b3;
}

.content {
    margin-left: 220px;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
}

h1 {
    color: #333;
}

form {
    display: grid;
    gap: 10px;
}

input, textarea, select {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
}

button {
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

.product-card {
    border: 1px solid #ddd;
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    display: inline-block;
    width: 30%;
}

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

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #007bff;
    color: white;
}