html {
    position: relative;
    min-height: 100%;
}
body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    padding-bottom: 100px;
}
header {
    background-color: #0054a6;
    color: white;
    padding: 1rem 2rem;
    text-align: center;
    font-size: 2rem;
    font-weight: bold;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}
.product {
    text-align: center;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}
.product img {
    width: 103px;
    height: 154px;
}
.product-details {
    text-align: left;
    padding: 1rem;
}
.product-title {
    font-size: 1.2rem;
    color: #0054a6;
    margin: 0.5rem 0;
}
.product-price {
    font-size: 1rem;
    color: #ed1c24;
    font-weight: bold;
}
.product-description {
    font-size: 0.9rem;
    color: #555;
    margin: 0.5rem 0 1rem 0;
}
.product button {
    background-color: #fff648;
    color: #000;
    border: none;
    padding: 0.6rem 1rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}
.product button:hover {
    background-color: #00a651;
    color: white;
}

.quantity-input {
    width: 60px;
    padding: 0.5rem;
    font-size: 1rem;
    color: #333;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
    background-color: #fff;
    transition: border-color 0.2s ease;
    margin-right: 1rem;
}

.banner-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}