/* Reset CSS cơ bản */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f2f2f2;
}

/* Header */
.header {
    background-color: #333333;
    color: #ffffff;
    text-align: center;
    padding: 20px 10px 10px 10px;
}

.header h1 {
    font-size: 26px;
    margin-bottom: 5px;
}

.header p {
    font-size: 13px;
    color: #cccccc;
}

/* Navbar Navigation */
.navbar {
    background-color: #444444;
}

.nav-menu {
    list-style: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 12px 25px;
    color: #dcdc22; /* Màu vàng của menu */
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
}

.nav-menu a:hover {
    color: #ffffff;
}

/* Dropdown Menu (Khi rê chuột vào Sản phẩm) */
.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    min-width: 150px;
    box-shadow: 0px 4px 8px rgba(0,0,0,0.2);
    list-style: none;
    z-index: 100;
    border: 1px solid #ccc;
}

.dropdown-content li {
    border-bottom: 1px solid #eee;
}

.dropdown-content li:last-child {
    border-bottom: none;
}

.dropdown-content a {
    color: #333333;
    padding: 10px 15px;
    font-weight: normal;
    font-size: 13px;
}

.dropdown-content a:hover {
    background-color: #28a745;
    color: #ffffff;
}

/* Hiển thị dropdown khi hover */
.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover .dropbtn {
    color: #ff4d4d; /* Màu đỏ nổi bật khi rê vào nút Sản phẩm */
}

/* Products Grid (4 cột) */
.products-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1100px;
    margin: 30px auto;
    padding: 0 15px;
}

/* Product Card */
.product-card {
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.product-card img {
    max-width: 100%;
    height: 140px;
    object-fit: contain;
    margin-bottom: 12px;
}

.product-card h3 {
    font-size: 14px;
    color: #222222;
    margin-bottom: 8px;
    font-weight: bold;
}

.product-card .price {
    font-size: 13px;
    color: #555555;
    margin-bottom: 12px;
}

/* Button Thêm vào giỏ */
.add-to-cart {
    background-color: #28a745; /* Màu xanh lá */
    color: #ffffff;
    border: none;
    padding: 6px 16px;
    font-size: 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.add-to-cart:hover {
    background-color: #218838;
}