/* Import Font */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

/* ======== CUSTOM PROPERTIES (VARIABLES) ======== */
:root {
    /* Tema Warna Gelap (Hitam & Ungu) */
    --bg-color: #121212; /* Latar belakang utama (sangat gelap) */
    --surface-color: #1E1E1E; /* Latar belakang untuk card/navbar */
    --primary-color: #9B59B6; /* Ungu sebagai aksen utama */
    --secondary-color: #8E44AD; /* Ungu lebih gelap untuk hover */
    
    /* Warna Teks */
    --text-primary: #FFFFFF; /* Teks heading/jelas */
    --text-secondary: #B0B0B0; /* Teks paragraf/subtle */

    /* Ukuran */
    --header-height: 70px;
}

/* ======== RESET & GLOBAL STYLES ======== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.section {
    padding: 6rem 5%;
    min-height: 80vh;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
}

/* Garis bawah judul */
.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

/* ======== UTILITY CLASSES (BUTTONS) ======== */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px; /* Bentuk pil */
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--text-primary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--text-primary);
}


/* ======== HEADER / NAVBAR ======== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(30, 30, 30, 0.9); /* Latar belakang semi-transparan */
    backdrop-filter: blur(10px); /* Efek blur */
    border-bottom: 1px solid #333;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-img {
    width: 35px;
    height: 35px;
    margin-right: 0.5rem;
    border-radius: 5px;
}

.logo:hover {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

/* Efek garis bawah saat hover/active */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.cart-btn {
    font-size: 1.3rem;
    color: var(--text-secondary);
    position: relative;
}

.cart-btn:hover {
    color: var(--primary-color);
}

.cart-counter {
    position: absolute;
    top: -8px;
    right: -10px;
    background-color: var(--primary-color);
    color: var(--text-primary);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hamburger {
    display: none; /* Sembunyikan di desktop */
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}


/* ======== SECTION HOME (HERO) ======== */
.hero {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    /* Efek gradien latar belakang */
    background: linear-gradient(rgba(18, 18, 18, 0.8), rgba(18, 18, 18, 1)), url('https://via.placeholder.com/1920x1080.png?text=Latar+Belakang+Manga') no-repeat center center/cover;
    /* Ganti URL di atas dengan gambar latar belakang Anda di folder images/ */
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero-content h1 span {
    color: var(--primary-color);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

/* ======== SECTION ABOUT ======== */
.about-container {
    display: flex;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap; /* Agar responsif */
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.about-image img {
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.about-content {
    flex: 1;
    min-width: 300px;
}

.about-content h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-content p {
    margin-bottom: 1rem;
}

/* ======== SECTION PRODUCT ======== */
#product {
    background-color: var(--surface-color); /* Latar sedikit beda */
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--bg-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(155, 89, 182, 0.3); /* Bayangan warna ungu */
}

.product-img {
    width: 100%;
    aspect-ratio: 2 / 3; /* Rasio gambar manga */
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
    text-align: center;
}

.product-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.product-info .btn-secondary {
    width: 100%;
}

/* ======== SECTION REVIEW ======== */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.review-card {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 10px;
    border-left: 5px solid var(--primary-color);
}

.review-card p {
    font-style: italic;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.review-card h4 {
    text-align: right;
    color: var(--text-primary);
    font-weight: 600;
}

/* ======== SECTION Q&A ======== */
#qa {
    background-color: var(--surface-color);
}

.qa-container {
    max-width: 800px;
    margin: 0 auto;
}

.qa-item {
    background-color: var(--bg-color);
    margin-bottom: 1rem;
    border-radius: 5px;
    border: 1px solid #333;
}

.qa-item summary {
    padding: 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    position: relative;
    list-style: none; /* Hapus panah default */
}

/* Ikon panah kustom */
.qa-item summary::after {
    content: '\f078'; /* Ikon panah bawah Font Awesome */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 1.5rem;
    transition: transform 0.3s ease;
}

.qa-item[open] summary::after {
    transform: rotate(180deg);
}

.qa-item p {
    padding: 0 1.5rem 1.5rem;
    border-top: 1px solid #333;
}

/* ======== FOOTER ======== */
.footer {
    background-color: var(--bg-color);
    text-align: center;
    padding: 3rem 5%;
    border-top: 1px solid #333;
}

.social-icons {
    margin-bottom: 1.5rem;
}

.social-icons a {
    font-size: 1.8rem;
    margin: 0 1rem;
    color: var(--text-secondary);
}

.social-icons a:hover {
    color: var(--primary-color);
}

.footer p {
    font-size: 0.9rem;
}

/* ======== MOBILE "BUY NOW" BUTTON ======== */
.mobile-buy-btn {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--primary-color);
    color: var(--text-primary);
    text-align: center;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 700;
    z-index: 999;
    display: none; /* Sembunyikan di desktop */
    gap: 0.5rem;
    justify-content: center;
    align-items: center;
}

.mobile-buy-btn:hover {
    background-color: var(--secondary-color);
    color: var(--text-primary);
}


/* ======== MEDIA QUERIES (RESPONSIVE) ======== */
@media (max-width: 768px) {
    .section {
        padding: 4rem 5%;
    }

    h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    /* --- Navbar Mobile --- */
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%; /* Sembunyi di luar layar */
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--surface-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2.5rem;
        transition: left 0.4s ease;
    }

    /* Kelas 'active' untuk menampilkan menu */
    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.5rem;
    }
    
    .nav-link:hover::after,
    .nav-link.active::after {
        width: 0; /* Matikan efek garis di mobile */
    }

    .hamburger {
        display: block; /* Tampilkan ikon hamburger */
    }

    /* --- Tampilkan Tombol "Buy Now" --- */
    .mobile-buy-btn {
        display: flex;
    }

    /* Beri ruang di bawah agar tidak tertutup tombol 'Buy Now' */
    body {
        padding-bottom: 60px; /* Sesuaikan dengan tinggi tombol */
    }

    .footer {
        /* Pastikan footer tidak tertutup tombol */
        margin-bottom: 60px; 
    }
}

@media (max-width: 480px) {
    .about-container {
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }
}