body {
    background: #f4f7fb;
    font-family: Arial, sans-serif;
}

.hero-section {
    background: linear-gradient(135deg, #111827, #2563eb);
    color: white;
    text-align: center;
    padding: 50px 20px;
}

.hero-section h1 {
    font-size: 48px;
    font-weight: bold;
}

.hero-section p {
    font-size: 18px;
}

.control-box {
    background: white;
    padding: 20px;
    border-radius: 18px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.filter-select {
    width: 230px;
}

.card {
    border: none;
    border-radius: 18px;
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 5px 18px rgba(0,0,0,0.12);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-7px);
}

.card img {
    height: 190px;
    object-fit: cover;
}

.card-title {
    font-weight: bold;
}

.price {
    color: #16a34a;
    font-size: 20px;
    font-weight: bold;
}

.cart-box {
    background: white;
    padding: 20px;
    border-radius: 18px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    position: sticky;
    top: 20px;
}

.list-group-item {
    font-size: 14px;
}

@media(max-width: 768px) {
    .hero-section h1 {
        font-size: 36px;
    }

    .control-box {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }
}