* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
}

/* Header Styles */
.header {
    background-color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo h1 {
    color: #2c3e50;
    font-size: 1.8rem;
}

.search-bar {
    flex: 1;
    max-width: 600px;
    margin: 0 2rem;
    display: flex;
}

.search-bar input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #ddd;
    border-radius: 4px 0 0 4px;
    font-size: 1rem;
}

.search-bar button {
    padding: 0.8rem 1.5rem;
    background-color: #2c3e50;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

.auth-buttons button {
    padding: 0.6rem 1.2rem;
    margin-left: 1rem;
    border-radius: 4px;
    cursor: pointer;
}

.login-btn {
    background-color: transparent;
    border: 2px solid #2c3e50;
    color: #2c3e50;
}

.register-btn {
    background-color: #2c3e50;
    border: none;
    color: white;
}

/* Categories Styles */
.categories {
    padding: 2rem;
    margin-top: 2rem;
}

.categories h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    cursor: pointer;
}

.category-card i {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Featured Items Styles */
.featured-items {
    padding: 2rem;
    margin-top: 2rem;
}

.featured-items h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.item-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.item-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.item-card h3, .item-card p {
    padding: 0.5rem 1rem;
}

.price {
    color: #2c3e50;
    font-weight: bold;
}

.location {
    color: #666;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        padding: 1rem;
    }
    
    .search-bar {
        margin: 1rem 0;
        width: 100%;
    }
    
    .auth-buttons {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-top: 1rem;
    }
}