/* --- RESET & VARIABEL (GATES FOUNDATION LIGHT THEME) --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-main: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-callout: #F1F5F9;
    --text-primary: #111827;
    --text-body: #1F2937;
    --text-muted: #6B7280;
    --accent-coral: #E04F26; /* Aksen oranye/koral khas Gates Foundation */
    --accent-hover: #C23A13;
    --border-light: #E5E7EB;
    --border-medium: #CBD5E1;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif: 'Lora', Georgia, serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- NAVBAR --- */
.site-header {
    background: #FFFFFF;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.brand-sub {
    font-weight: 400;
    color: var(--accent-coral);
}

.site-nav {
    display: flex;
    gap: 28px;
    align-items: center;
}

.site-nav a {
    text-decoration: none;
    color: var(--text-body);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.site-nav a:hover {
    color: var(--accent-coral);
}

.nav-cta {
    border: 1px solid var(--text-primary);
    padding: 8px 18px;
    border-radius: 4px;
    font-weight: 600 !important;
}

.nav-cta:hover {
    background: var(--text-primary);
    color: #FFFFFF !important;
}

/* --- CONTAINER ARTIKEL --- */
.article-main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 24px 120px;
}

/* --- HEADER ARTIKEL --- */
.article-header {
    max-width: 780px;
    margin: 0 auto 40px;
    text-align: center;
}

.article-category {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-coral);
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.article-title {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.article-deck {
    font-size: 1.25rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 28px;
}

.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    padding: 14px 0;
}

.meta-author strong {
    color: var(--text-primary);
}

.meta-divider {
    color: var(--border-medium);
}

/* --- PULL QUOTE --- */
.pull-quote-wrapper {
    max-width: 860px;
    margin: 50px auto;
    padding: 0 20px;
}

.pull-quote {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.5;
    text-align: center;
    padding: 30px;
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent-coral);
    border-right: 4px solid var(--accent-coral);
}

/* --- TUBUH ARTIKEL (GAYA LORA EDITORIAL) --- */
.article-body {
    max-width: 720px;
    margin: 0 auto 80px;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    line-height: 1.85;
    color: var(--text-body);
}

.lead-text {
    font-size: 1.35rem;
    line-height: 1.75;
    color: var(--text-primary);
    margin-bottom: 28px;
}

.article-body p {
    margin-bottom: 24px;
}

.article-body strong {
    font-weight: 600;
    color: var(--text-primary);
}

.article-body em {
    font-style: italic;
}

/* --- KURIKULUM & MODUL --- */
.curriculum-section {
    max-width: 860px;
    margin: 0 auto 80px;
    border-top: 2px solid var(--text-primary);
    padding-top: 50px;
}

.section-heading-wrapper {
    margin-bottom: 40px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
}

.modules-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.module-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 24px;
    padding: 28px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    transition: border-color 0.2s ease;
}

.module-item:hover {
    border-color: var(--border-medium);
}

.module-number {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1px;
    padding-top: 4px;
}

.module-title {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.module-desc {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.6;
}

.module-highlight {
    background: #FFF7ED; /* Nuansa krem hangat beraksen oranye */
    border-color: #FFEDD5;
}

.highlight-text {
    color: var(--accent-coral);
    font-weight: 800;
}

/* --- BENCHMARK RISET --- */
.research-callout {
    max-width: 860px;
    margin: 0 auto 80px;
    padding: 40px;
    background: var(--bg-callout);
    border-left: 4px solid #0F172A;
    border-radius: 0 8px 8px 0;
}

.callout-badge {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: #0F172A;
    margin-bottom: 12px;
}

.callout-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.callout-text {
    font-size: 1.05rem;
    color: var(--text-body);
    line-height: 1.7;
    margin-bottom: 20px;
}

.callout-link {
    display: inline-block;
    font-weight: 700;
    color: var(--accent-coral);
    text-decoration: none;
    font-size: 0.95rem;
}

.callout-link:hover {
    text-decoration: underline;
}

/* --- BOX INVESTASI --- */
.investment-box {
    max-width: 720px;
    margin: 0 auto;
    background: #FFFFFF;
    border: 2px solid var(--text-primary);
    border-radius: 8px;
    padding: 50px 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.discount-pill {
    display: inline-block;
    background: var(--accent-coral);
    color: #FFFFFF;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 1px;
    padding: 4px 14px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.investment-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.investment-desc {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 500px;
    margin: 0 auto 30px;
}

.price-container {
    margin-bottom: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.price-original {
    display: block;
    font-size: 1.1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-bottom: 4px;
}

.price-final {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.price-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.target-box {
    margin-bottom: 35px;
}

.target-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.target-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.target-tag {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-body);
}

.action-wrapper {
    margin-bottom: 16px;
}

.btn-register {
    display: inline-block;
    width: 100%;
    max-width: 400px;
    background: var(--accent-coral);
    color: #FFFFFF;
    font-size: 1.1rem;
    font-weight: 700;
    padding: 16px 24px;
    border-radius: 6px;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-register:hover {
    background: var(--accent-hover);
}

.guarantee-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* --- FOOTER --- */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: 60px 0;
    margin-top: 60px;
}

.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.footer-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-body);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent-coral);
}

.footer-copy {
    width: 100%;
    border-top: 1px solid var(--border-light);
    padding-top: 20px;
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media screen and (max-width: 768px) {
    .site-nav {
        display: none; /* Sembunyikan link di mobile agar header rapi */
    }
    
    .article-title {
        font-size: 2.1rem;
    }

    .article-deck {
        font-size: 1.1rem;
    }

    .module-item {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 20px;
    }

    .module-number {
        margin-bottom: 4px;
    }

    .investment-box {
        padding: 30px 20px;
    }

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

    .footer-links {
        justify-content: center;
    }
}

/* --- SECTION VIDEO COURSE / DEMO --- */
.video-section {
    max-width: 860px;
    margin: 0 auto 80px;
    border-top: 2px solid var(--text-primary);
    padding-top: 50px;
}

.text-center {
    text-align: center;
}

.video-container-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

/* Memaksa rasio 16:9 yang responsif di semua layar */
.video-responsive-box {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 6px;
    background-color: #000000;
}

.video-responsive-box iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-caption {
    margin-top: 16px;
    font-size: 0.95rem;
    color: var(--text-body);
    font-family: var(--font-sans);
    line-height: 1.5;
    padding-left: 8px;
    border-left: 3px solid var(--accent-coral);
}

/* --- SECTION GALERI (EDITORIAL MASONRY GRID) --- */
.gallery-section {
    max-width: 860px;
    margin: 0 auto 80px;
    border-top: 2px solid var(--text-primary);
    padding-top: 50px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 30px;
}

.gallery-card {
    background: #FFFFFF;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--border-medium);
}

/* Kartu yang meluas 2 kolom (Asimetris ala Nicepage) */
.gallery-wide {
    grid-column: span 2;
}

.gallery-img-box {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-secondary);
}

.gallery-wide .gallery-img-box {
    height: 300px; /* Lebih tinggi untuk gambar yang lebar */
}

.gallery-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-card:hover .gallery-img-box img {
    transform: scale(1.05); /* Zoom halus saat kursor diarahkan */
}

.gallery-meta {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: center;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
}

.gallery-meta h4 {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.gallery-meta p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

/* --- RESPONSIF MOBILE UNTUK GALERI & VIDEO --- */
@media screen and (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr; /* Jadi 1 kolom vertikal di HP */
        gap: 16px;
    }

    .gallery-wide {
        grid-column: span 1;
    }

    .gallery-img-box,
    .gallery-wide .gallery-img-box {
        height: 220px;
    }

    .video-container-wrapper {
        padding: 14px;
    }
}

/* --- STYLING BURGER BUTTON & MOBILE MENU DROPDOWN --- */
.mobile-menu-toggle {
    display: none; /* Sembunyikan di tampilan desktop */
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    padding: 0;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease-in-out;
}

/* Animasi Tombol Burger Menjadi 'X' Saat Aktif */
.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* RESPONSIF MOBILE MENU */
@media screen and (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex; /* Tampilkan burger button di HP */
    }

    .site-nav {
        display: none; /* Sembunyikan menu bawaan */
        position: absolute;
        top: 100%; /* Muncul tepat di bawah header */
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 2px solid var(--border-light);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    }

    /* Tampilkan menu saat tombol burger diklik */
    .site-nav.active {
        display: flex;
    }

    .site-nav a {
        font-size: 1rem;
        padding: 8px 0;
        border-bottom: 1px solid var(--border-light);
        width: 100%;
    }

    .site-nav .nav-cta {
        text-align: center;
        margin-top: 8px;
        border-bottom: none;
    }
}

/* --- STRICT BILINGUAL SWITCHER --- */
.lang-en { 
    display: none !important; 
}

.lang-id { 
    display: inline; 
}

.lang-toggle-box {
    display: inline-flex;
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    overflow: hidden;
    margin-left: 10px;
}

.lang-btn {
    background: transparent;
    border: none;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.lang-btn.active {
    background: var(--text-primary);
    color: #FFFFFF;
}

/* --- HERO BANNER KHUSUS ABOUT PAGE --- */
.editorial-hero-banner {
    width: 100%;
    max-width: 860px;
    margin: 30px auto 40px;
    height: 380px;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(rgba(10, 17, 40, 0.65), rgba(10, 17, 40, 0.75)), url('/images/heroabout.jpg') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.editorial-hero-content {
    max-width: 700px;
}

.editorial-hero-content h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: #FFFFFF;
    margin-bottom: 12px;
    line-height: 1.3;
}

.editorial-hero-content p {
    font-size: 1.05rem;
    color: #E2E8F0;
    line-height: 1.6;
}

@media screen and (max-width: 768px) {
    .editorial-hero-banner {
        height: auto;
        padding: 40px 20px;
    }
    .editorial-hero-content h2 {
        font-size: 1.5rem;
    }
}

/* --- HEADER ACTIONS (TOGGLE BAHASA & BURGER SEJAJAR) --- */
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px; /* Jarak pas antara kotak bahasa dan tombol burger */
}

/* --- STRICT BILINGUAL SWITCHER --- */
.lang-en { 
    display: none !important; 
}

.lang-id { 
    display: inline; 
}

.lang-toggle-box {
    display: inline-flex;
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    overflow: hidden;
    background: #FFFFFF;
}

.lang-btn {
    background: transparent;
    border: none;
    padding: 6px 10px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.lang-btn.active {
    background: var(--text-primary);
    color: #FFFFFF;
}

/* --- STYLING BURGER BUTTON & MOBILE MENU DROPDOWN --- */
.mobile-menu-toggle {
    display: none; /* Sembunyikan di desktop */
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    padding: 0;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease-in-out;
}

/* Animasi Tombol Burger Menjadi 'X' Saat Aktif */
.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* RESPONSIF MOBILE MENU */
@media screen and (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex; /* Tampilkan tombol burger di mobile */
    }

    .site-nav {
        display: none; /* Sembunyikan menu teks default */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 2px solid var(--border-light);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    }

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

    .site-nav a {
        font-size: 1rem;
        padding: 8px 0;
        border-bottom: 1px solid var(--border-light);
        width: 100%;
    }

    .site-nav .nav-cta {
        text-align: center;
        margin-top: 8px;
        border-bottom: none;
    }
}