body {
    background-color: #f9f9f9;
    font-family: 'Kanit', Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
}

/* สไตล์สำหรับแท็บ */
.tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
    justify-content: center;
}

.tab {
    padding: 10px 20px;
    cursor: pointer;
}

.tab.active {
    border-bottom: 2px solid #000;
    font-weight: bold;
}

/* สไตล์สำหรับรายการหนังสือ */
.list-group {
    display: grid;
    grid-template-columns: 50% 50%;
    gap: 20px;
    list-style-type: none;
    padding: 0;
}

.list-group-item {
    display: flex;
    width: auto; /* 2 คอลัมน์ต่อแถว */
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    background-color: #fff;
}

.list-group-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.book-thumbnail {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
}

.book-info {
    flex: 1;
    padding: 15px;
    display: flex;
    flex-direction: row;
    gap: 20px;
}

h2 {
    font-size: 1.2em;
    margin: 0 0 10px 0;
}

p {
    margin: 5px 0;
    font-size: 0.9em;
    color: #666;
    
}
.undefind-data {
    text-align: center;
}

.read-more {
    color: #0066cc;
    text-decoration: none;
    font-size: 0.9em;
    align-self: flex-start;
}

.result {
    font-size: x-large;
    display: flex;
    justify-content: center;
}
.warning {
    font-size: xx-large;
    text-align: center;
}

.title-genre {
    font-size: xx-large;
    text-align: center;
}

#pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
}

#pagination button {
    margin: 0 10px;
    padding: 5px 15px;
    font-size: 18px;
    border: 1px solid #ddd;
    background-color: #f8f8f8;
    cursor: pointer;
}

#pagination button:hover:not(:disabled) {
    background-color: #e8e8e8;
}

#pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#pageIndicator {
    font-size: 16px;
    margin: 0 10px;
}
#authorList {
    list-style-type: none;
    padding: 0;
}
#authorList li {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}