body {
    margin: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8f9fa;
    padding: 10px 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.search-bar input {
    padding: 5px;
    font-size: 1rem;
}

.search-bar button {
    padding: 5px 10px;
    background: #e74c3c;
    color: white;
    border: none;
    cursor: pointer;
}

.header-icons a {
    margin: 0 10px;
    color: #333;
    text-decoration: none;
}

.filters {
    padding: 20px;
    background-color: #f8f9fa;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.filters h2 {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 10px;
}

.filter-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-options label {
    font-weight: bold;
    margin-right: 5px;
}

.filter-options select {
    padding: 5px;
    font-size: 1rem;
}

.filter-btn {
    padding: 10px 20px;
    background: #27ae60;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

.book-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
    gap: 20px;
    background-color: #fff;
}

.book-card {
    width: 200px;
    background: #f8f9fa;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    overflow: hidden;
    text-align: center;
    padding: 10px;
}

.book-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 2px solid #e74c3c;
}

.book-title {
    font-size: 1rem;
    margin: 10px 0;
    color: #333;
}

.book-price {
    font-size: 1.2rem;
    color: #27ae60;
    margin: 10px 0;
}

.buy-btn {
    padding: 10px 15px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}