body {
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}

/* Navbar Global */
.navbar {
    background: rgba(0, 0, 0, 0.5);
    /* Lebih transparan */
    color: #fff;
    padding: 15px 0;
    /* Lebih tebal */
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: background 0.5s, padding 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Efek saat Scroll */
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.85);
    /* Lebih gelap saat di-scroll */
    padding: 10px 0;
    /* Mengecil saat scroll */
}

/* Container */
.container {
    width: 95%;
    /* Lebih lebar */
    margin: auto;
    overflow: hidden;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    color: #fff;
    text-decoration: none;
    font-size: 26px;
    /* Sedikit lebih besar */
    font-weight: bold;
}

.logo-img {
    width: 60px;
    /* Ukuran logo diperbesar */
    height: 60px;
    margin-right: 15px;
    border-radius: 50%;
}

/* Menu */
.nav-menu {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    display: inline;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    transition: 0.3s;
    border-radius: 5px;
}

.nav-menu a:hover {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
}


/* Atur Ukuran Logo */
.logo-img {
    width: 50px;
    /* Sesuaikan ukuran logo */
    height: 50px;
    margin-right: 10px;
    border-radius: 50%;
}


/* Efek saat Scroll */
.scrolled .navbar {
    background: rgba(0, 0, 0, 0.95);
}

/* Header */
header {
    padding-top: 70px;
    /* Tambahkan padding untuk mendorong konten */

    color: black;
    text-align: center;

}


header h1 {
    margin: 0;
    font-size: 2.8em;
    animation: slideDown 1s ease-out;
}


/* Mengatur tampilan daftar buku */
.book-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    /* Memberi jarak antar card */
    padding: 40px 20px;
}

/* Desain setiap card buku */
.book-item {
    background-color: white;
    border-radius: 8px;
    width: 300px;
    /* Ukuran seragam */
    padding: 20px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

/* Efek hover agar lebih menarik */
.book-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Gambar dalam card */
.book-item img {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 10px;
}

/* Judul buku */
.book-item h2 {
    font-size: 18px;
    color: #333;
    margin: 10px 0;
}

/* Deskripsi */
.book-item p {
    font-size: 14px;
    color: #666;
    margin: 5px 0;
}

/* Grup tombol agar sejajar dan rapi */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    /* Memberikan jarak antar tombol */
    margin-top: 15px;
}

/* Tombol Detail dan Preview */
.detail-btn,
.preview-btn {
    background-color: #1e3c72;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 12px;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s;
}

/* Efek hover tombol */
.detail-btn:hover,
.preview-btn:hover {
    background-color: #2a5298;
}

/* Footer */
.footer-section {
    position: relative;
    width: 100%;
    bottom: 0;
    left: 0;
}

.footer-section .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-section hr {
    width: 100%;
    margin-top: 20px;
}


/* ✅ Grid Responsive untuk Daftar Buku */
.book-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    /* 3 kolom di Desktop */
    gap: 20px;
    padding: 20px;
}

/* ✅ Responsive untuk Tablet */
@media (max-width: 1024px) {
    .book-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 2 kolom di Tablet */
    }
}

/* ✅ Responsive untuk Handphone */
@media (max-width: 768px) {
    .book-grid {
        grid-template-columns: 1fr;
        /* 1 kolom di Handphone */
    }
}

/* ✅ Responsif untuk Navbar */
@media (max-width: 1024px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        right: 0;
        background: rgba(0, 0, 0, 0.9);
        width: 100%;
        text-align: center;
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger-menu {
        display: block;
    }
}

/* ✅ Sembunyikan tombol hamburger di Desktop */
@media (min-width: 1024px) {
    .hamburger-menu {
        display: none !important;
    }
}

/* ✅ Pastikan Footer Tetap di Bawah */
.footer-section {
    position: relative;
    bottom: 0;
    width: 100%;
}