* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f9f9f9;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 10px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.navbar h1 a {
    color: white;
    text-decoration: none;
}

.nav-links {
    list-style: none;
}

.nav-links li {
    display: inline;
    margin: 0 15px;
}

.nav-links li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
}

.auth button {
    background-color: #e74c3c;
    color: white;
    padding: 10px 20px;
    border: none;
    margin-left: 10px;
    cursor: pointer;
}

.hero {
    background: url('https://via.placeholder.com/1920x600') center/cover no-repeat;
    color: white;
    padding: 60px 0;
    text-align: center;
}

.hero button {
    background-color: #e74c3c;
    color: white;
    padding: 15px 30px;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    margin-top: 20px;
}

.shop-section, .auctions-section, .sell-section, .about-section, .contact-section {
    padding: 40px 20px;
    text-align: center;
}

.product-list, .auction-list {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.product-card, .auction-card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    width: 250px;
    text-align: center;
}

.product-card img, .auction-card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

button {
    background-color: #2980b9;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    margin-top: 10px;
    border-radius: 5px;
}

button:hover {
    background-color: #3498db;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px;
}