body {
    font-family: 'Vazirmatn', Tahoma, sans-serif;
    background: linear-gradient(135deg, #181c26 0%, #212c40 100%);
    margin: 0;
    color: #f5f6fa;
}

.header {
    background: linear-gradient(90deg, #ed1c24 0%, #c81d25 100%);
    box-shadow: 0 8px 32px #ed1c2426;
    color: #fff;
    text-align: center;
    padding: 48px 0 28px 0;
    border-bottom-right-radius: 40px;
    border-bottom-left-radius: 40px;
}

.nav {
    display: flex;
    justify-content: center;
    background: rgb(32 38 54);
    box-shadow: 0 4px 18px #17182290;
    border-radius: 30px;
    margin: -33px auto 24px auto;
    max-width: 900px;
    z-index: 2;
    position: sticky;
}

.nav-item {
    position: relative;
    overflow: hidden;
    padding: 18px 28px;
    color: #e5e5e5;
    font-weight: 700;
    text-decoration: none;
    font-size: 18px;
    border-radius: 28px;
    margin: 3px;
    background-color: transparent;
    transition: color 1s;
}

.nav-item::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: linear-gradient(90deg, #ed1c24 0%, #c81d25 100%);
    opacity: 0;
    transition: opacity 1s;
    z-index: -1;
    border-radius: 28px;
}

.nav-item:hover::before {
    opacity: 1;
    transition-delay: 0s;
}

.nav-item:hover {
    color: #fff;
}

.active {
    background: linear-gradient(90deg, #ed1c24 0%, #c81d25 100%);
}
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    padding: 48px;
}

.product-card {
    background: #fff;
    padding: 28px;
    border-radius: 16px;
    box-shadow: 0 2px 14px #eee;
    text-align: center;
    transition: .5s;
}

.product-card h3,p,small{
    color: #212c40;
}

.product-card:hover {
    transform: translateY(-8px);
}

.product-img {
    width:50%;
    border-radius: 50px;
    margin-bottom: 12px;
    display: inline-block;
}

footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 18px 0;
    margin-top: 48px;
}

.buy-btn{
    background: linear-gradient(90deg, #ed1c24 0%, #c81d25 100%);
        box-shadow: 0 8px 32px #ed1c2386;
        color: #fff;
        font-size: 15px;
        font-family: 'Vazirmatn';
        font-weight: bold;
        border: none;
        margin-top: 20px;
        height: 50px;
        width: 70%;
        border-radius: 18px;
        cursor: pointer;
        transition: 0.6s;
}

.buy-btn:hover{
    transition: 0.6s;
    transform: scale(1.1);
}

footer {
    background: #222;
    color: #fff;
    text-align: center;
    padding: 18px 0;
    margin-top: 48px;
}