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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #eef1f5;
    padding: 20px;
    color: #333;
}

.shop-container {
    max-width: 950px;
    margin: 0 auto;
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.header {
    background: linear-gradient(to bottom, #3b434c, #2b3036);
    color: #ffffff;
    text-align: center;
    padding-top: 20px;
}

.header h1 {
    font-size: 24px;
    margin-bottom: 6px;
    font-weight: bold;
}

.subtitle {
    font-size: 13px;
    color: #b0b8c0;
    margin-bottom: 20px;
}

.navbar {
    background-color: rgba(0, 0, 0, 0.25);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.nav-menu a {
    display: block;
    color: #d1d5db;
    text-decoration: none;
    padding: 10px 25px;
    font-size: 13px;
    transition: color 0.2s;
}

.nav-menu a:hover,
.dropdown:hover > a {
    color: #ff3333;
    font-weight: bold;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #2b3036;
    min-width: 150px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    list-style: none;
    z-index: 100;
    text-align: left;
}

.dropdown-content li a {
    padding: 8px 15px;
    font-size: 12px;
    color: #cccccc;
    font-weight: normal;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dropdown-content li a:hover {
    background-color: #3b434c;
    color: #ff3333;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 cột đều nhau */
    gap: 20px;
    padding: 25px;
}

.product-card {
    text-align: center;
    background-color: #ffffff;
    padding: 10px;
}

.img-box {
    width: 100%;
    height: 120px;
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.img-box img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.product-name {
    font-size: 15px;
    font-weight: bold;
    color: #222222;
    margin-bottom: 6px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.price {
    font-size: 12px;
    color: #27ae60;
    margin-bottom: 10px;
}

.btn-cart {
    background-color: #27ae60;
    color: #ffffff;
    border: none;
    padding: 6px 14px;
    font-size: 11px;
    border-radius: 3px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-cart:hover {
    background-color: #219150;
}