/* === 1. PENGATURAN GLOBAL & VARIABEL === */
:root {
    --bg-dark: #1a0a2e;
    --surface: rgba(41, 22, 70, 0.6); /* Warna panel dengan transparansi */
    --primary: #8a42db;
    --secondary: #ff5e78;
    --accent: #00c9a7;
    --text-light: #e6eef8;
    --text-muted: #a0a8b3;
    --border: rgba(255, 255, 255, 0.15);
    --font-family: "Poppins", sans-serif;
    --navbar-height: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    background-image: linear-gradient(160deg, #1a0a2e 0%, #3b1154 100%);
    color: var(--text-light);
    line-height: 1.6;
}
.h1,
.h2,
.h3,
.h4,
.h5,
.h6,
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-light) !important;
    font-weight: 700;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* === 2. HEADER & NAVBAR === */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background: rgba(30, 17, 49, 0.8)!important;
    background-color: rgba(30, 17, 49, 0.8)!important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--navbar-height);
    background-color: n#ffffff00!important;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
}
.nav-logo img {
    height: 45px;
}
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}
.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}
.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}
.nav-auth {
    display: flex;
    gap: 10px;
}
.btn {
    padding: 8px 22px;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s ease;
}
.btn-login {
    background: transparent;
    border-color: var(--accent);
    color: var(--accent);
}
.btn-login:hover {
    background: var(--accent);
    color: var(--bg-dark);
}
.btn-register {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
}
.btn-register:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(138, 66, 219, 0.4);
}
.hamburger {
    display: none;
}

/* === 3. KONTEN UTAMA & SECTION === */
main {
}
.page-section {
    padding: 100px 0;
}
.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 60px;
    font-weight: 700;
}

/* --- Hero Section --- */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
}
.hero-content {
    display: flex;
    align-items: center;
    gap: 50px;
}
.hero-text {
    flex: 0, 8;
    text-align: left;
    max-width: 1000px;
}
.hero-visual {
    flex: 1, 2;
    display: flex;
    justify-content: center;
}
.hero-visual img {
    max-width: 95%;
    animation: float 4s ease-in-out infinite;
}
.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1rem;
}
.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}
.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.hero-explanation {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(5px);
    border-left: 4px solid var(--primary);
    padding: 20px;
    margin: 1.5rem 0;
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.hero-explanation strong {
    color: var(--text-light);
    font-weight: 600;
}
.btn-card {
    display: inline-block;
    margin-top: 20px;
    padding: 8px 25px;
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-card:hover {
    background: var(--accent);
    color: var(--bg-dark);
}

/* --- Timeline --- */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

/* Garis vertikal di tengah */
.timeline::after {
    content: "";
    position: absolute;
    width: 4px;
    background-color: var(--surface);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

/* Wadah untuk setiap item timeline */
.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

/* Posisi item ganjil di kiri */
.timeline-item:nth-child(odd) {
    left: 0;
}

/* Posisi item genap di kanan */
.timeline-item:nth-child(even) {
    left: 50%;
}

/* Titik di garis timeline */
.timeline-dot {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--primary);
    border: 4px solid var(--bg-dark);
    top: 32px;
    right: -12px;
    border-radius: 50%;
    z-index: 1;
}

/* Mengatur posisi titik untuk item di kanan */
.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
}

/* Konten di dalam timeline (menggunakan style card yang sudah ada) */
.timeline-content {
    position: relative;
}
.btn-primary {
    display: inline-block;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    padding: 14px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(138, 66, 219, 0.4);
}

/* --- Card & Grid --- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}
.grid-container-5 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.card {
    background: var(--surface) !important;
    border: 1px solid var(--border);
    padding: 30px;
    text-align: center;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.icon-wrapper {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}
.card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

/* --- FAQ --- */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 15px;
    transition: background-color 0.3s ease;
}
.faq-item[open] {
    background-color: rgba(41, 22, 70, 0.9);
}
.faq-item summary {
    padding: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    list-style: none; /* Menghilangkan panah default */
}
.faq-item summary::-webkit-details-marker {
    display: none; /* Menghilangkan panah default di Chrome/Safari */
}
.faq-item summary::after {
    content: "\f078"; /* Ikon panah dari Font Awesome */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 20px;
    transition: transform 0.3s ease;
}
.faq-item[open] summary {
    color: var(--primary);
}
.faq-item[open] summary::after {
    transform: rotate(180deg);
}
.faq-item p {
    padding: 0 20px 20px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin: 10px 20px 0;
}

/* --- Galeri Dokumentasi --- */
.gallery-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.gallery-item:hover img {
    transform: scale(1.1);
}

/* ======================================= */
/* 4. FOOTER                 */
/* ======================================= */
.footer {
    background-color: #120622 !important; /* Warna ungu yang lebih gelap dari surface */
    padding: 60px 0 20px;
    border-top: 1px solid var(--border);
}

.footer-container {
    display: flex;
    flex-wrap: wrap; /* Agar responsif di layar kecil */
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1; /* Membuat setiap kolom fleksibel */
    min-width: 250px; /* Lebar minimum sebelum pindah baris */
}

.footer-logo {
    max-height: 50px; /* Atur ukuran logo di sini */
    margin-bottom: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    width: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    margin-right: 10px;
    border-radius: 50%;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 25px;
    position: relative;
}

/* Garis kecil di bawah judul */
.footer-col h4::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    background: var(--primary);
    height: 2px;
    width: 50px;
}

.footer-col ul {
    list-style: none; /* Menghilangkan titik-titik */
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a,
.footer-col p {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--text-light);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}
/* === 4. ANIMASI === */
@keyframes float {
    0%,
    100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* === 5. RESPONSIVE DESIGN === */

/* Hamburger Menu Styling */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.hamburger:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Touch-friendly improvements */
@media (max-width: 767px) {
    .btn,
    .btn-primary,
    .btn-card {
        min-height: 44px;
        min-width: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hamburger {
        min-height: 44px;
        min-width: 44px;
    }

    /* Prevent horizontal scroll */
    body {
        overflow-x: hidden;
    }

    /* Improve text readability on small screens */
    .hero-explanation {
        text-align: left;
    }

    /* Better spacing for mobile */
    .timeline-item {
        margin-bottom: 20px;
    }
}

/* ======================================= */
/* LAPTOP & DESKTOP (1024px and above) */
/* ======================================= */
@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
    }

    /* Navbar untuk desktop */
    .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav-logo {
        order: 1;
        flex: none;
        margin-left: 0;
    }

    .nav-menu {
        order: 2;
        display: flex;
        position: static;
        flex-direction: row;
        width: auto;
        height: auto;
        background: none;
        backdrop-filter: none;
        padding: 0;
        box-shadow: none;
        transition: none;
    }

    .nav-menu .nav-link {
        border-left: none;
        padding: 0;
        margin: 0 1.5rem;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        border-left: none;
        background: none;
    }

    .nav-auth {
        order: 3;
        display: flex;
    }

    /* Sembunyikan tombol auth di sidebar pada desktop */
    .nav-menu .nav-auth {
        display: none !important;
    }

    /* Pastikan tombol auth di navbar utama tetap tampil di desktop */
    .navbar > .nav-auth {
        display: flex !important;
    }

    .hamburger {
        display: none;
    }

    .hero-content {
        flex-direction: row;
        gap: 60px;
    }

    .hero-text {
        flex: 0.8;
        text-align: left;
    }

    .hero-visual {
        flex: 1.2;
        display: flex;
        justify-content: center;
    }

    .hero-title {
        font-size: 4.5rem;
    }

    .section-title {
        font-size: 2.8rem;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 40px;
    }
}

/* ======================================= */
/* TABLET (768px - 1023px) */
/* ======================================= */
@media (max-width: 1023px) and (min-width: 768px) {
    .container {
        width: 95%;
        max-width: 900px;
    }

    /* Navbar */
    .navbar {
        position: relative;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: -100%;
        width: 300px;
        height: 100vh;
        background-color: rgba(30, 17, 49, 0.98);
        backdrop-filter: blur(15px);
        padding: 80px 0 2rem 0;
        text-align: left;
        transition: left 0.3s ease;
        z-index: 999;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        display: flex;
        left: 0;
    }

    .nav-menu .nav-item {
        margin: 5px 0;
    }

    .nav-menu .nav-link {
        font-size: 1.1rem;
        padding: 15px 30px;
        display: block;
        border-left: 3px solid transparent;
        transition: all 0.3s ease;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        border-left-color: var(--primary);
        background-color: rgba(138, 66, 219, 0.1);
    }

    .nav-auth {
        display: none; /* Sembunyikan di navbar utama */
    }

    .hamburger {
        display: flex;
        order: 1;
    }

    .nav-logo {
        order: 2;
        flex: 1;
        justify-content: center;
        margin-left: -25px; /* Offset untuk hamburger */
    }

    /* Auth buttons di dalam sidebar */
    .nav-menu .nav-auth {
        display: flex;
        flex-direction: column;
        gap: 10px;
        padding: 20px 30px;
        margin-top: 20px;
        border-top: 1px solid var(--border);
    }

    .nav-menu .nav-auth .btn {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
        font-size: 1rem;
        border-radius: 50px;
        font-weight: 700;
        transition: all 0.3s ease;
    }

    .nav-menu .nav-auth .btn-login {
        background: transparent;
        border: 2px solid var(--accent);
        color: var(--accent);
    }

    .nav-menu .nav-auth .btn-login:hover {
        background: var(--accent);
        color: var(--bg-dark);
    }

    .nav-menu .nav-auth .btn-register {
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        color: white;
        border: 2px solid transparent;
    }

    .nav-menu .nav-auth .btn-register:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(138, 66, 219, 0.4);
    }

    /* Overlay untuk menutup menu */
    .nav-menu::before {
        content: "";
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: -1;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .nav-menu.active::before {
        opacity: 1;
        pointer-events: auto;
    }

    /* Hero Section */
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-explanation {
        font-size: 1rem;
        padding: 18px;
    }

    /* Timeline */
    .timeline::after {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 20px;
        left: 0 !important;
    }

    .timeline-item:nth-child(even) {
        left: 0 !important;
    }

    .timeline-dot {
        left: 22px;
    }

    /* Grid & Cards */
    .section-title {
        font-size: 2.4rem;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 25px;
    }

    .card {
        padding: 25px;
    }

    /* Footer */
    .footer-container {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 25px;
    }

    .footer-col {
        min-width: 200px;
        flex: 1;
    }
}

/* ======================================= */
/* MOBILE (320px - 767px) */
/* ======================================= */
@media (max-width: 767px) {
    .container {
        width: 95%;
        padding: 0 15px;
    }

    /* Navbar */
    .navbar {
        position: relative;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background-color: rgba(30, 17, 49, 0.98);
        backdrop-filter: blur(15px);
        padding: 80px 0 2rem 0;
        text-align: left;
        transition: left 0.3s ease;
        z-index: 999;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        display: flex;
        left: 0;
    }

    .nav-menu .nav-item {
        margin: 5px 0;
    }

    .nav-menu .nav-link {
        font-size: 1.1rem;
        padding: 15px 30px;
        display: block;
        border-left: 3px solid transparent;
        transition: all 0.3s ease;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        border-left-color: var(--primary);
        background-color: rgba(138, 66, 219, 0.1);
    }

    .nav-auth {
        display: none; /* Sembunyikan di navbar utama */
    }

    .hamburger {
        display: flex;
        order: 1;
    }

    .nav-logo {
        order: 2;
        flex: 1;
        justify-content: center;
        margin-left: -25px; /* Offset untuk hamburger */
    }

    /* Auth buttons di dalam sidebar */
    .nav-menu .nav-auth {
        display: flex;
        flex-direction: column;
        gap: 10px;
        padding: 20px 30px;
        margin-top: 20px;
        border-top: 1px solid var(--border);
    }

    .nav-menu .nav-auth .btn {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
        font-size: 1rem;
        border-radius: 50px;
        font-weight: 700;
        transition: all 0.3s ease;
    }

    .nav-menu .nav-auth .btn-login {
        background: transparent;
        border: 2px solid var(--accent);
        color: var(--accent);
    }

    .nav-menu .nav-auth .btn-login:hover {
        background: var(--accent);
        color: var(--bg-dark);
    }

    .nav-menu .nav-auth .btn-register {
        background: linear-gradient(90deg, var(--primary), var(--secondary));
        color: white;
        border: 2px solid transparent;
    }

    .nav-menu .nav-auth .btn-register:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(138, 66, 219, 0.4);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Overlay untuk menutup menu */
    .nav-menu::before {
        content: "";
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: -1;
        opacity: 0;
        transition: opacity 0.3s ease;
        pointer-events: none;
        cursor: pointer;
    }

    .nav-menu.active::before {
        opacity: 1;
        pointer-events: auto;
    }

    /* Hero Section */
    .hero {
        min-height: 70vh;
        padding: 60px 0;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .hero-text {
        max-width: 100%;
        text-align: center;
    }

    .hero-title {
        font-size: 2.8rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }

    .hero-explanation {
        font-size: 0.95rem;
        padding: 15px;
        margin: 1rem 0;
        line-height: 1.6;
    }

    .hero-visual img {
        max-width: 80%;
    }

    /* Sections */
    .page-section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    /* Timeline */
    .timeline::after {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 10px;
        left: 0 !important;
    }

    .timeline-item:nth-child(even) {
        left: 0 !important;
    }

    .timeline-dot {
        left: 12px;
    }

    .timeline-content {
        padding: 20px;
    }

    .timeline-content h3 {
        font-size: 1.3rem;
    }

    .timeline-content p {
        font-size: 0.9rem;
    }

    /* Grid & Cards */
    .grid-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .card {
        padding: 20px;
    }

    .card h3 {
        font-size: 1.3rem;
    }

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

    .icon-wrapper {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    /* Buttons */
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .btn-primary {
        padding: 12px 25px;
        font-size: 1rem;
    }

    .btn-card {
        padding: 8px 20px;
        font-size: 0.85rem;
    }

    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 25px;
    }

    .footer-col {
        min-width: 100%;
    }

    .footer-col h4::before {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-logo {
        max-height: 40px;
        margin-bottom: 15px;
    }

    .social-links a {
        height: 35px;
        width: 35px;
        margin: 0 5px;
    }

    /* Gallery */
    .gallery-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .gallery-item img {
        height: 200px;
        object-fit: cover;
    }
}

/* ======================================= */
/* EXTRA SMALL MOBILE (320px - 480px) */
/* ======================================= */
@media (max-width: 480px) {
    .container {
        width: 98%;
        padding: 0 10px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero-explanation {
        font-size: 0.9rem;
        padding: 12px;
    }

    .card {
        padding: 15px;
    }

    .timeline-content {
        padding: 15px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .btn-primary {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}