* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
}

header .logo {
    font-size: 1.5em;
}

header .search-bar input {
    padding: 5px;
    font-size: 1em;
}

header .user-actions button {
    margin-left: 10px;
    padding: 5px 10px;
    font-size: 1em;
}

.container {
    display: flex;
    flex: 1;
}

.sidebar {
    width: 20%;
    background-color: #f4f4f4;
    padding: 20px;
}

.sidebar h2 {
    margin-bottom: 10px;
}

.sidebar ul {
    list-style: none;
}

.category-item {
    cursor: pointer;
    margin-bottom: 10px;
}

.subcategory-list {
    display: none;
    list-style: none;
    padding-left: 20px;
}

.subcategory-list li {
    margin-bottom: 5px;
    cursor: pointer;
}

.main-content {
    flex: 1;
    padding: 20px;
}

.filter-bar {
    margin-bottom: 20px;
}

.product-list {
    display: flex;
    flex-wrap: wrap;
}

.product-card {
    width: 200px;
    margin: 10px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
}

.product-card img {
    width: 100%;
    height: auto;
}

.product-card h3 {
    margin: 10px 0;
}

.product-card p {
    margin-bottom: 10px;
}

.cart-summary {
    width: 20%;
    background-color: #f4f4f4;
    padding: 20px;
}

.cart-summary ul {
    list-style: none;
    margin-bottom: 20px;
}

.cart-summary ul li {
    margin-bottom: 10px;
}