:root {
    /* Warna diambil dari logo Rakit AI */
    --primary: #EF533F; 
    --dark: #373F47; 
    --light: #F9F9F9;
    --grid-color: #EAEAEA;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    /* Pola grid meniru background Zoom/Gmeet */
    background-image:
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    color: var(--dark);
    position: relative;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Ornamen bentuk abstrak merah di pojok kanan bawah */
body::before {
    content: '';
    position: absolute;
    bottom: -150px;
    right: -150px;
    width: 500px;
    height: 500px;
    background-color: var(--primary);
    border-radius: 120px;
    transform: rotate(45deg);
    z-index: -1;
    opacity: 0.9;
}

/* Ornamen titik-titik (halftone) di pojok kanan atas */
body::after {
    content: '';
    position: absolute;
    top: 40px;
    right: 40px;
    width: 150px;
    height: 100px;
    background-image: radial-gradient(var(--dark) 2px, transparent 2px);
    background-size: 20px 20px;
    z-index: -1;
    opacity: 0.7;
}

header {
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between; /* Memisahkan logo di kiri dan menu di kanan */
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--grid-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.navbar {
    display: flex;
    gap: 0.5rem; /* Memberikan jarak tipis antar kotak menu */
}

.nav-item {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.25s ease; /* Transisi halus saat warna memblok */
}

/* Efek blocking warna penuh saat kursor diarahkan ke menu */
.nav-item:hover {
    background-color: var(--primary);
    color: white;
}

header img {
    height: 45px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 5%;
}

.page-title {
    text-align: center;
    margin-bottom: 4rem;
}

.page-title h1 {
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.page-title p {
    color: #666;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
}

.card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    border: 2px solid transparent;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(239, 83, 63, 0.15);
    border-color: var(--primary);
}

.card-img {
    width: 100%;
    /* Gunakan rasio 9:16 untuk potret */
    aspect-ratio: 4 / 5;
    /* Memastikan gambar memenuhi bingkai tanpa distorsi, sisa gambar akan terpotong secara estetis */
    object-fit: cover; 
    border-bottom: 4px solid var(--primary);
}

.card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tags {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.2rem;
}

.tag-price {
    background: var(--primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.tag-jp {
    background: var(--dark);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

.card-title {
    font-size: 1.3rem;
    margin: 0 0 1.2rem 0;
    line-height: 1.4;
    color: var(--dark);
}

.card-details {
    margin-top: auto;
    font-size: 0.95rem;
    color: #555;
    background: var(--light);
    padding: 1rem;
    border-radius: 10px;
}

.detail-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-icon {
    margin-right: 10px;
    font-size: 1.1rem;
}

.btn-fake {
    background-color: var(--primary);
    color: white;
    text-align: center;
    padding: 12px;
    border-radius: 10px;
    font-weight: 700;
    margin-top: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

/* Efek visual saat kartu di-hover */
.card:hover .btn-fake {
    background-color: #d84332; /* Warna merah yang sedikit lebih gelap */
}

/* Styling default untuk icon burger (disembunyikan di desktop) */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Media query khusus untuk tampilan mobile (maksimal lebar 768px) */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .navbar {
        display: none; /* Sembunyikan menu bawaan di mobile */
        flex-direction: column;
        position: absolute;
        top: 75px; /* Jarak dari atas menyesuaikan tinggi header */
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
        padding: 1rem 0;
    }

    /* Class tambahan yang akan di-trigger oleh JS */
    .navbar.active {
    display: flex !important;
    z-index: 999; /* Memastikan menu muncul di lapisan paling atas, tidak tertutup card */
}

    .nav-item {
        text-align: center;
        padding: 1rem;
        border-radius: 0; /* Hilangkan border-radius agar rapi saat jadi dropdown */
        border-bottom: 1px solid var(--grid-color);
    }

    .nav-item:last-child {
        border-bottom: none;
    }
}

/* Layout penengah konten */
.certificate-container {
    display: flex;
    justify-content: center;
    align-items: center;
    /* Mengurangi tinggi navbar agar benar-benar di tengah */
    min-height: calc(100vh - 80px); 
    padding: 2rem;
}

/* Desain kotak utama */
.certificate-box {
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    text-align: center;
    max-width: 500px;
    width: 100%;
    /* Aksen garis atas menggunakan warna utama Rakit AI */
    border-top: 5px solid var(--primary);
}

.certificate-box h2 {
    color: var(--dark);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    margin-top: 0;
}

.certificate-box p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Layout form dan tombol */
.certificate-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.certificate-form input {
    padding: 14px 15px;
    border: 2px solid var(--grid-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
    text-align: center;
}

.certificate-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(239, 83, 63, 0.1);
}

.btn-download {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

.btn-download:hover {
    background-color: #d84332;
}

.btn-download:active {
    transform: scale(0.98);
}

.not-found-box {
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    text-align: center;
    max-width: 500px;
    width: 100%;
    /* Menggunakan warna merah utama untuk indikasi error */
    border-top: 5px solid var(--primary); 
}

.not-found-box h2 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-top: 0;
    margin-bottom: 0.8rem;
}

.not-found-box p {
    color: #555;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.btn-back {
    display: inline-block;
    background-color: var(--dark);
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 1rem;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.btn-back:hover {
    background-color: #222;
}