body {
    font-family: 'Courier New', monospace;
    background-color: #1a1a1a;
    color: #00cc00;
    margin: 0;
    padding: 0;
}

header {
    background-color: #000;
    text-align: center;
    padding: 20px;
    border-bottom: 2px solid #00cc00;
}

header h1 {
    font-size: 3em;
    margin: 0;
    text-shadow: 0 0 10px #00cc00;
}

nav {
    background-color: #000;
    padding: 10px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0;
}

nav li {
    margin: 0 15px;
}

nav a {
    color: #00cc00;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-shadow: 0 0 5px #00cc00;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
}

section {
    margin-bottom: 30px;
}

.hidden {
    display: none;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.product {
    background-color: #2a2a2a;
    padding: 20px;
    border: 1px solid #00cc00;
    border-radius: 5px;
    text-align: center;
    transition: all 0.3s ease;
}

.product:hover {
    background-color: #3a3a3a;
    box-shadow: 0 0 15px rgba(0, 204, 0, 0.5);
    transform: translateY(-5px);
}

.product h3 {
    color: #00ff00;
    margin-top: 0;
    font-size: 1.3em;
}

.product p {
    margin: 10px 0;
    line-height: 1.5;
}

.price {
    font-weight: bold;
    color: #ff9900;
    font-size: 1.2em;
    margin-top: 15px;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #000;
    border-top: 2px solid #00cc00;
    position: fixed;
    bottom: 0;
    width: 100%;
}