body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom right, #000033, #0000FF, #00FFFF);
    min-height: 100vh;
    color: white;
}
header {
    background-color: black;
    text-align: center;
    padding: 20px 0;
}
h1 {
    font-size: 3em;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}
.book-card {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}
.book-card:hover {
    transform: translateY(-10px);
}
.book-cover {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}
.book-title {
    margin: 15px 0 5px 0;
    font-size: 1.5em;
}
.book-author {
    color: #cccccc;
    margin: 5px 0;
}
nav {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px 0;
}
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}
footer {
    background-color: black;
    text-align: center;
    padding: 10px 0;
    position: relative;
    bottom: 0;
    width: 100%;
}
a {
    color: white;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}