/* ================= VARIABLES & THEME ================= */
        :root {
            --bg-color: #f4f4f4;
            --surface-color: #ffffff;
            --text-main: #111111;
            --text-muted: #666666;
            --accent-green: #008f11;
            --border-color: #d0d0d0;
            --font-sans: 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'Courier New', Courier, monospace;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        [data-theme="dark"] {
            --bg-color: #050505;
            --surface-color: #0a0a0a;
            --text-main: #f0f0f0;
            --text-muted: #888888;
            --accent-green: #00ff41; 
            --border-color: #222222;
        }

        /* ================= GLOBAL RESET ================= */
        * { margin: 0; padding: 0; box-sizing: border-box; scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans); background-color: var(--bg-color);
            color: var(--text-main); line-height: 1.7; transition: var(--transition);
        }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        button { border: none; background: none; cursor: pointer; color: inherit; }
        
        .ledger-border-bottom { border-bottom: 1px solid var(--border-color); }
        .ledger-border-right { border-right: 1px solid var(--border-color); }
        .ledger-border-left { border-left: 1px solid var(--border-color); }

        /* ================= HEADER ================= */
        header { position: relative; background: var(--surface-color); z-index: 100; }
        .header-container { display: flex; align-items: center; justify-content: space-between; padding: 0 2rem; height: 70px; }
        .logo { font-family: var(--font-mono); font-size: 1.5rem; font-weight: bold; letter-spacing: -1px;}
        .logo span { color: var(--accent-green); }
        .main-menu { display: flex; gap: 2rem; font-size: 0.9rem; font-weight: 500; text-transform: uppercase; letter-spacing: 1px;}
        .main-menu li { position: relative; padding: 25px 0; }
        .main-menu li:hover > a { color: var(--accent-green); }
        .dropdown { position: absolute; top: 100%; left: 0; background: var(--surface-color); border: 1px solid var(--border-color); min-width: 200px; opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); z-index: 10; }
        .main-menu li:hover > .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
        .dropdown li { padding: 0; border-bottom: 1px solid var(--border-color); }
        .dropdown a { display: block; padding: 10px 15px; text-transform: capitalize; font-size: 0.85rem;}
        .dropdown a:hover { background: var(--accent-green); color: #000; }
        .has-submenu { position: relative; }
        .submenu-l3 { position: absolute; top: -1px; left: 100%; background: var(--surface-color); border: 1px solid var(--border-color); min-width: 200px; opacity: 0; visibility: hidden; transition: var(--transition); }
        .has-submenu:hover > .submenu-l3 { opacity: 1; visibility: visible; }
        .header-actions { display: flex; align-items: center; gap: 1.5rem; }
        .theme-toggle { font-family: var(--font-mono); font-size: 0.8rem; border: 1px solid var(--border-color); padding: 5px 10px; border-radius: 20px; }
        .theme-toggle:hover { border-color: var(--accent-green); color: var(--accent-green); }
        .search-btn { font-weight: bold; font-family: var(--font-mono); }
        .hamburger { display: none; font-size: 1.8rem; z-index: 110; }

        /* ================= LIVE TRACKER TICKER ================= */
        .progress-tracker {
            position: sticky; top: 0; background: var(--surface-color); height: 35px;
            display: flex; align-items: center; justify-content: space-between; padding: 0 2rem;
            font-family: var(--font-mono); font-size: 0.75rem; font-weight: bold; z-index: 90;
            border-bottom: 1px solid var(--border-color);
        }
        .progress-bar-fill { position: absolute; bottom: -1px; left: 0; height: 2px; background: var(--accent-green); width: 0%; transition: width 0.1s ease-out; }

        /* ================= SINGLE POST LAYOUT ================= */
        .single-container {
            display: grid; grid-template-columns: 280px 1fr 300px; max-width: 1600px; margin: 0 auto; background: var(--surface-color);
        }

        /* BARU: Left Sidebar - Index & Share (Col A) */
        .post-left-sidebar { 
            padding: 3rem 2rem; position: sticky; top: 35px; height: calc(100vh - 105px); 
            display: flex; flex-direction: column; justify-content: space-between; 
        }
        .toc-title { font-family: var(--font-mono); font-size: 0.8rem; font-weight: bold; text-transform: uppercase; margin-bottom: 1.5rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-color); }
        
        .toc-list li { border-bottom: 1px solid var(--border-color); }
        .toc-list a { display: block; padding: 0.8rem 0; font-size: 0.9rem; color: var(--text-muted); transition: var(--transition); }
        .toc-list a:hover { color: var(--accent-green); padding-left: 5px; font-family: var(--font-mono); }
        
        .sidebar-share-btn { 
            width: 100%; text-align: center; border: 1px solid var(--border-color); padding: 12px; 
            font-family: var(--font-mono); font-size: 0.85rem; font-weight: bold; text-transform: uppercase; 
            transition: var(--transition); margin-top: auto;
        }
        .sidebar-share-btn:hover { background: var(--accent-green); color: #000; border-color: var(--accent-green); }

        /* Article Main (Col B) */
        .article-wrap { padding: 4rem 3rem; max-width: 850px; margin: 0 auto; }
        .doc-hash { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent-green); margin-bottom: 1rem; letter-spacing: 1px; }
        .post-title { font-size: 3.2rem; line-height: 1.1; font-weight: 800; margin-bottom: 1.5rem; letter-spacing: -1px; }
        .post-sub { font-size: 1.3rem; color: var(--text-muted); margin-bottom: 2.5rem; line-height: 1.5; }
        
        .featured-area { border: 1px solid var(--border-color); padding: 10px; margin-bottom: 3rem; background: var(--bg-color); }
        .featured-img { width: 100%; height: auto; display: block; filter: grayscale(100%); transition: filter 0.5s; }
        .featured-area:hover .featured-img { filter: grayscale(0%); }

        /* Content Typography */
        .post-body p { margin-bottom: 2rem; font-size: 1.15rem; color: var(--text-main); }
        .post-body h2 { font-size: 1.8rem; font-weight: 700; margin: 3rem 0 1.5rem; letter-spacing: -0.5px; border-bottom: 1px dashed var(--border-color); padding-bottom: 0.5rem; }
        .post-body blockquote { border-left: 3px solid var(--accent-green); padding-left: 1.5rem; margin: 2.5rem 0; font-family: var(--font-mono); font-size: 1.05rem; color: var(--text-muted); }
        
        /* BARU: Tombol Share Akhir Artikel */
        .article-end-share {
            margin-top: 4rem; padding-top: 2rem; border-top: 1px dashed var(--border-color);
            display: flex; align-items: center; justify-content: space-between;
        }
        .end-share-label { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); }
        .end-share-btn { 
            border: 1px solid var(--accent-green); color: var(--accent-green); padding: 10px 20px; 
            font-family: var(--font-mono); font-size: 0.85rem; font-weight: bold; text-transform: uppercase; transition: var(--transition);
        }
        .end-share-btn:hover { background: var(--accent-green); color: #000; }

        /* BARU: Right Sidebar - Meta Log (Col C) */
        .post-right-sidebar { padding: 3rem 2rem; position: sticky; top: 35px; }
        .meta-log-box { border: 1px dashed var(--border-color); padding: 1.2rem; font-family: var(--font-mono); font-size: 0.8rem; margin-bottom: 2rem; background: var(--surface-color); }
        .meta-log-box div { margin-bottom: 0.8rem; border-bottom: 1px dotted var(--border-color); padding-bottom: 0.4rem; }
        .meta-log-box div:last-child { margin-bottom: 0; border: none; padding-bottom: 0; }
        .meta-log-box span { color: var(--accent-green); font-weight: bold; }
        
        /* ================= RELATED ENTRIES LOG ================= */
        .related-section { background: var(--bg-color); border-top: 1px solid var(--border-color); }
        .related-header { max-width: 1600px; margin: 0 auto; padding: 2rem; font-family: var(--font-mono); font-size: 0.9rem; font-weight: bold; letter-spacing: 1px; }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 1600px; margin: 0 auto; border-bottom: 1px solid var(--border-color); }
        .related-card { background: var(--surface-color); padding: 2.5rem; transition: var(--transition); display: flex; flex-direction: column; justify-content: space-between; min-height: 250px; }
        .related-card:hover { background: var(--bg-color); }
        .related-card:hover .related-title { color: var(--accent-green); }
        .related-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); margin-bottom: 1rem; }
        .related-title { font-size: 1.4rem; font-weight: bold; line-height: 1.3; cursor: pointer; transition: color 0.3s; }
        .related-link { font-family: var(--font-mono); font-size: 0.8rem; font-weight: bold; text-transform: uppercase; margin-top: 2rem; display: inline-flex; align-items: center; gap: 5px; }
        
        /* ================= FOOTER ================= */
        footer { background: var(--surface-color); border-top: 1px solid var(--border-color); padding: 4rem 2rem 2rem; font-family: var(--font-mono); font-size: 0.85rem; }
        .footer-grid { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 2rem; max-width: 1600px; margin: 0 auto; margin-bottom: 3rem; }
        .foot-desc { color: var(--text-muted); margin-top: 1rem; max-width: 80%; }
        .foot-menu ul { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
        .foot-menu a:hover { color: var(--accent-green); }
        .copyright { text-align: center; border-top: 1px solid var(--border-color); padding-top: 2rem; color: var(--text-muted); }

        /* ================= POPUP BOXES (SEARCH & SOCIAL SHARE) ================= */
        .popup-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); z-index: 999; display: flex; flex-direction: column; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); backdrop-filter: blur(5px); }
        .popup-overlay.active { opacity: 1; visibility: visible; }
        .close-popup { position: absolute; top: 2rem; right: 3rem; font-size: 2rem; color: #fff; cursor: pointer; font-family: var(--font-mono); }
        
        .search-box, .share-box { width: 60%; position: relative; color: #fff; }
        .search-box input { width: 100%; background: transparent; border: none; border-bottom: 2px solid var(--accent-green); font-size: 3rem; color: #fff; padding: 10px 0; outline: none; }
        .popular-keywords { margin-top: 2rem; color: #888; font-family: var(--font-mono); }
        .popular-keywords span { display: inline-block; margin-right: 15px; border: 1px solid #333; padding: 5px 15px; border-radius: 20px; cursor: pointer; margin-top: 10px;}
        .popular-keywords span:hover { border-color: var(--accent-green); color: var(--accent-green); }

        /* BARU: Desain Share Grid di Dalam Popup */
        .share-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-top: 2rem; }
        .share-item { border: 1px solid #333; padding: 1.5rem; font-family: var(--font-mono); text-align: center; text-transform: uppercase; font-size: 1rem; transition: var(--transition); cursor: pointer;}
        .share-item:hover { border-color: var(--accent-green); color: var(--accent-green); background: rgba(0, 255, 65, 0.05); }

        /* ================= RESPONSIVE DESIGN (DIOPTIMALKAN UNTUK MOBILE) ================= */
        @media (max-width: 1200px) {
            /* Tampilkan Semua Kolom Secara Stack Vertikal di Perangkat Mobile/Tablet tanpa menghilangkan konten */
            .single-container { grid-template-columns: 1fr; }
            
            /* Left Sidebar (Daftar Isi) ditempatkan di bawah judul utama agar terbaca sebelum artikel */
            .post-left-sidebar { 
                height: auto; position: static; padding: 2rem; 
                border-bottom: 1px solid var(--border-color); border-right: none; 
            }
            .sidebar-share-btn { margin-top: 2rem; }

            /* Right Sidebar (Meta Post) dipindahkan ke posisi strategis */
            .post-right-sidebar { 
                position: static; padding: 2rem; 
                border-top: 1px solid var(--border-color); border-left: none;
                background: var(--bg-color);
            }
            
            .article-wrap { padding: 3rem 1.5rem; }
            .related-grid { grid-template-columns: 1fr; }
            .related-card { border-bottom: 1px solid var(--border-color); padding: 2rem 1rem; }
            .share-box { width: 90%; }
            .share-grid { grid-template-columns: 1fr; gap: 1rem; }
        }

        @media (max-width: 768px) {
            .header-container { padding: 0 1rem; }
            .hamburger { display: block; }
            .main-menu { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; width: 100%; background: var(--surface-color); border-bottom: 2px solid var(--accent-green); padding: 0; z-index: 105; max-height: calc(100vh - 70px); overflow-y: auto; }
            .main-menu.mobile-active { display: flex; }
            .main-menu li { width: 100%; padding: 0; border-bottom: 1px solid var(--border-color); }
            .main-menu li > a { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; font-family: var(--font-mono); }
            .dropdown, .submenu-l3 { position: static; width: 100%; background: var(--bg-color); border: none; border-top: 1px solid var(--border-color); max-height: 0; opacity: 1; visibility: visible; overflow: hidden; transition: max-height 0.3s ease-out; }
            .dropdown.open, .submenu-l3.open { max-height: 500px; }
            .dropdown a { padding: 12px 30px; }
            .post-title { font-size: 2.2rem; }
        }