:root {
    --bg: #FDF6EC;
    --card-bg: #FFF8F0;
    --primary: #4B2E2E;
    --button: #6B8E23;
    --button-hover: #556B2F;
    --text: #333333;
    --border: #E5D5C5;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: var(--bg);
    color: var(--text);
}

.categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: var(--primary);
}

.categories button {
    background: var(--button);
    border: none;
    padding: 10px 15px;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.3s;
}

.categories button:hover {
    background: var(--button-hover);
}

.books-section {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

.books-header {
    text-align: center;
    margin-bottom: 20px;
}

#category-title {
    font-size: 2rem;
    color: var(--primary);
}

.search-bar {
    display: flex;
    justify-content: center;
    margin: 20px 0;
    gap: 10px;
}

.search-bar input {
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 250px;
}

.search-bar button {
    background: var(--button);
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

.search-bar button:hover {
    background: var(--button-hover);
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.book-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.book-card:hover {
    transform: translateY(-5px);
}

.book-card img {
    max-width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 6px;
}