*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    color: #333;
}
.header{
    background-color: #d0021b;
    color: white;
    text-align: center;
    padding: 10px 0px;
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 1px;
}

.menu{
    top: 0;
    width: 100%;
    background-color: #ffffff;
    position: sticky;
    z-index: 1000;
    border-bottom: 1px solid #ddd;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}
.menu .nav{
    display: flex;
    list-style-type: none;
    align-items: center;
    height: 80px;
    justify-content: center;
    gap: 12px;
}
.nav li{
    position: relative;
}
.nav li a{
    text-decoration: none;
    color: black;
    font-weight: 600;
    line-height: 30px;
    padding: 0px 15px;
    text-transform: uppercase;
    transition: color 0.3s;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    text-transform: none;
    color: black;
}
.nav>li:hover{
    background-color: white;
}
.nav>li:hover>a{
    color: rgb(134, 179, 237);
}
.subnav
{
    width: auto;
    min-width: 150px;
    height: auto;
    padding: 5px 0;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.subnav li:hover{
    background-color: white;
}
.subnav li a{
    color: black;
}
.subnav li:hover>a{
    color: rgb(134, 179, 237);
}
.nav .subnav{
    list-style-type: none;
    position: absolute;
    background-color: white;
    display: none;
    box-shadow: 1px 4px 3px rgba(0, 0, 0, 0.5);
    top: 100%;
    left: 0;
}
.nav >li:hover .subnav{
    display: block;
}
.search{
    display: flex;
    border: 1px solid white;
    border-radius: 20px;
    margin-left: 20px;
    overflow: hidden;
}
.search-input{
    font-size: 14px;
    border: none;
    outline: none;
    padding: 5px 10px;
}
.search-button{
    background-color: white;
    border: none;
    font-size: 16px;
    padding: 5px 10px;
    cursor: pointer;
    transition: 0.3s;
}
.search-button i{
    font-weight: bold;
}
.search-button:hover{
    transform: scale(1.1);
}
.gh{
    border: 1px solid black;
    color: black;
    border-radius: 20px;
    padding: 6px 12px;
    background-color: white;
    cursor: pointer;
    margin-left: 20px;
    transition: background-color 0.3s;
    position: relative;
}
.gh i{
    font-weight: bold;
    font-size: 18px;
}
.gh:hover{
    background-color: #ccc;
    color: black;
}
#showcard {
    position: absolute;
    right: 100px;
    top: 100%;
    padding: 10px;
    max-width: 625px;
    margin: -15px auto;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #f9f9f9;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow-x: auto;
    width: 100%;
}
#showcard table {
    width: 100%;
    border-collapse: collapse;
    font-family: sans-serif;
}
#showcard th,
#showcard td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
}
#showcard tfoot th {
    background-color: #ddd;
    font-size: 16px;
}
#mycard button {
    background-color: #e53935;
    color: #fff;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
}
#mycard button:hover {
    background-color: #c62828;
}
#tongtien {
    font-weight: bold;
    font-size: 18px;
    color: #e53935;
}
.row-gh{
    display: flex;
    margin-top: 5px;
    /* border-radius: 5px; */
}
.tt{
    /* flex: 1; chia đều 2 nút */
    background-color: rgb(134, 179, 237);
    color: #333;
    padding: 5px;
    border: 1px solid white;
    border-radius: 5px;
    text-align: center;
    /* border: none; ||xoa vien trang giua 2 nut neu muon thanh 1 thanhthanh */
    font-size: 14px;
    font-family: Arial, sans-serif;
    font-weight: bold;
    text-decoration: none;
}
.tt-gh{
    flex: 3;
}
.tt-tt{
    flex: 7;
}
/* .tt{
    background-color: rgb(134, 179, 237);
    color: #333;
    width: 100%;
    margin: 7px 0px 7px 0px;
    padding: 5px;
    border: 1px solid white;
    border-radius: 5px;
    font-size: 14px;
    font-family: Arial, sans-serif;
    font-weight: bold;
} */
.tt:hover{ 
    background-color: rgb(101, 157, 229);
    color: #333;
    transition-duration: 0.4s;
} 
.slider {
    position: relative;
    overflow: hidden;
}
.slider-img{
    width: 400vw;
    display: flex;
    transition: transform 1.5s ease-in-out;
}
.slider .slider-img img{
    width: 100vw;
    display: flex;
}
.bst{
    margin: 40px;
    text-align: center;
}

.product-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 1200px;
    gap: 40px;
    margin: 0 auto 60px;
    padding: 0;
    background-color: #fdfcf8;
}
.product-card {
    background-color: #ffffff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 270px;
    text-align: center;
    padding: 15px;
}
.product-card:hover{
    transform: translateY(-5px);
}
.product-card img {
    width: 100%;
    border-radius: 8px;
}
.product-card h3 {
    font-size: 16px;
    margin: 10px 0;
}
.product-card p {
    font-size: 14px;
    color: #666;
}
.product-card .price {
    font-weight: bold;
    color: #333;
}
.product-card .sale {
    color: red;
    font-weight: bold;
}
.button {
    background-color: white;
    color: black;
    padding: 10px 15px;
    border: black solid 1px;
    border-radius: 5px;
    cursor: pointer;
    transition-duration: 1s;
}
.button:hover {
    background-color: rgb(190, 209, 235);
    color: black;
}

.end{
    padding: 50px;
    display: flex;
    justify-content: space-between;
    border: 1px solid #ddd;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background-color: #f1f1f1;
}
.end h2{
    margin-bottom: 5px;
}
.end p{
    margin-bottom: 5px;
}
.end a{
    display: flex;
    color: black;
    text-decoration: none;
    margin-bottom: 5px;
}
.end a:hover{
    color: rgb(134, 179, 237);
}

.facebook{
    border: #ddd solid 1px;
    color: black;
    background: white;
    border-radius: 3px;
    transition-duration: 0.4s;
    display: block;
    padding: 5px;
    width: 100%;
}
.facebook:hover{
    background: black;
    color: white;
}
.ig{
    border: #ddd solid 1px;
    color: black;
    background: white;
    border-radius: 3px;
    transition-duration: 0.4s;
    display: block;
    padding: 5px;
    width: 100%;
}
.ig:hover{
    background: black;
    color: white;
}
.spe{
    border: #ddd solid 1px;
    color: black;
    background: white;
    border-radius: 3px;
    transition-duration: 0.4s;
    display: block;
    padding: 5px;
    width: 100%;
}
.spe:hover{
    background-color: black;
    color: white;
}
.footer {
    padding: 30px;
    justify-content: center;
    align-items: center;
    /* border: 1px solid #ddd; */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background-color: black;
    color: white;
}

.footer p{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2px;
}
/*lâm bùi làm giảm giá*/
.product-card {
    position: relative;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 10px;
    text-align: center;
    width: 250px;
    margin: 10px;
    background-color: white;
}
.discount {
    background-color: red;
    color: white;
    font-size: 14px;
    font-weight: bold;
    width: 50px;
    height: 24px;
    border-radius: 12px;
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}
/*kết thúc giảm giá*/