/* === RESET & VARIABEL DASAR === */
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; }
        :root {
            --primary: #009B97;    
            --primary-dark: #007A77;
            --secondary: #8DC63F;  
            --blue-alt: #0A3A82;   
            --purple: #663399;     
            --bg-light: #f4f9f9;   
            --text-dark: #333333;
            --border-color: #e0e0e0;
            --danger: #e74c3c;
            --warning: #f39c12;
            --success: #2ecc71;
        }

        /* Custom Scrollbar */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #f1f1f1; }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

        body { background-color: var(--bg-light); color: var(--text-dark); line-height: 1.6; display: flex; flex-direction: column; min-height: 100vh; }

        /* === NAVBAR === */
        /* === NAVBAR YANG LEBIH RAMPING === */
        .navbar { position: fixed; top: 0; left: 0; width: 100%; background-color: white; padding: 10px 5%; /* Padding atas-bawah diperkecil */display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 15px rgba(0,0,0,0.1); z-index: 1000; }
        .nav-brand { font-size: 1.4rem; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer; user-select: none; }
        /* Batasi ukuran tinggi logo agar tidak membuat navbar melar */
        .nav-brand img { height: 45px !important; /* Disesuaikan agar pas dan rapi */width: auto; display: block; object-fit: contain;}
        .nav-menu { display: flex; align-items: center; gap: 20px; }
        .nav-link { color: var(--text-dark); text-decoration: none; font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: color 0.3s ease; display: flex; align-items: center; gap: 6px; }
        .nav-link:hover { color: var(--primary); }
        .btn-back { color: var(--primary); text-decoration: none; font-weight: 600; display: none; align-items: center; gap: 8px; padding: 6px 16px; border: 2px solid var(--primary); border-radius: 30px; transition: all 0.3s ease; cursor: pointer; font-size: 0.85rem; }
        .btn-back:hover { background-color: var(--primary); color: white; }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--primary); cursor: pointer; }

            /* === BUTTONS & BADGES === */
        .btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 6px; border: none; cursor: pointer; transition: background 0.2s; color: white; display: inline-flex; align-items: center; gap: 5px; }
        .btn-primary { background-color: var(--primary); color: white; }
        .btn-primary:hover { background-color: var(--primary-dark); }
        .btn-danger { background-color: var(--danger); color: white; }
        .btn-danger:hover { background-color: #c0392b; }

        /* === PAGE VIEWS === */
        .page-view { display: none; animation: fadeIn 0.4s ease-in-out; }
        .page-view.active { display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        /* === HERO SECTION === */
        .hero { min-height: 100vh; display: flex; align-items: center; justify-content: space-between; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; padding: 120px 5% 60px 5%; margin-top: 50px; }
        .hero-content { flex: 1; padding-right: 40px; max-width: 60%; }
        .hero-content h1 { font-size: 4.5rem; margin-bottom: 10px; text-shadow: 2px 2px 5px rgba(0,0,0,0.2); }
        .hero-content h2 { font-size: 1.5rem; font-weight: 400; margin-bottom: 20px; }
        .hero-content p { font-size: 1.1rem; margin-bottom: 40px; opacity: 0.95; }
        .core-pillars { display: flex; gap: 30px; margin-bottom: 40px; flex-wrap: wrap; }
        .pillar-item { display: flex; flex-direction: column; align-items: center; font-weight: 600; font-size: 0.9rem; cursor: pointer;}
        .pillar-item i { font-size: 1.8rem; margin-bottom: 10px; width: 60px; height: 60px; background: rgba(255, 255, 255, 0.2); display: flex; justify-content: center; align-items: center; border-radius: 50%; box-shadow: 0 4px 10px rgba(0,0,0,0.1); transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);}
        .pillar-item:hover i {transform: rotate(8deg) scale(1.08); background: #ffffff; color: #007bff; box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);}
        .pillar-item a { display: flex; flex-direction: column; align-items: center;text-decoration: none; color: inherit;}
        .btn-scroll { padding: 15px 35px; font-size: 1.1rem; font-weight: 600; color: var(--primary); background-color: white; border: none; border-radius: 50px; cursor: pointer; text-decoration: none; display: inline-block; box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: transform 0.2s; }
        .btn-scroll:hover { transform: translateY(-3px); }
        
        /* Perbaikan Posisi & Tinggi Container Gambar Hero */
        .hero-image { flex: 1; max-width: 40%; position: relative; display: flex; justify-content: center; align-items: center; min-height: 450px; margin-top: 20px; }
        .image-slider { width: 100%; position: absolute; top: 50%; transform: translateY(-50%); left: 0; border-radius: 20px; box-shadow: 0 15px 40px rgba(0, 155, 151, 0.4); transition: opacity 0.8s ease-in-out; object-fit: cover; opacity: 0; }
        .image-slider.active { opacity: 1; }

        /* === ALUR BELAJAR SECTION === */
        .alur-section { padding: 80px 20px 20px 20px; max-width: 1200px; margin: 0 auto; }
        .alur-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 25px; margin-top: 30px; }
        .alur-card { background: white; padding: 35px 20px 25px 20px; border-radius: 15px; text-align: center; box-shadow: 0 5px 15px rgba(0,0,0,0.05); position: relative; border-top: 4px solid var(--primary); transition: transform 0.3s ease, box-shadow 0.3s ease; }
        .alur-card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,155,151,0.15); }
        .alur-step { position: absolute; top: -16px; left: 50%; transform: translateX(-50%); background: var(--secondary); color: white; width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.95rem; box-shadow: 0 3px 8px rgba(0,0,0,0.15); }
        .alur-icon { font-size: 2.2rem; color: var(--primary); margin: 10px 0 12px 0; }
        .alur-card h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--text-dark); }
        .alur-card p { font-size: 0.88rem; color: #666; line-height: 1.5; }

        /* === MENU LAYANAN === */
        /* === MENU LAYANAN === */
        .layanan-section { padding: 60px 20px 40px 20px; max-width: 1200px; margin: 0 auto; }
        .section-title { text-align: center; font-size: 2.3rem; color: var(--primary); margin-bottom: 10px; }
        .section-subtitle { text-align: center; font-size: 1rem; color: #666; margin-bottom: 40px; }
        .layanan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; justify-content: center; }
        .layanan-card { background: white; border-radius: 15px; padding: 40px 20px; text-align: center; color: var(--text-dark); box-shadow: 0 5px 20px rgba(0,0,0,0.05); transition: all 0.3s ease; border-bottom: 5px solid transparent; cursor: pointer; display: flex; flex-direction: column; align-items: center; text-decoration: none !important; /* Menghilangkan garis bawah pada link */}
        .layanan-card:hover { transform: translateY(-8px); box-shadow: 0 10px 30px rgba(0, 155, 151, 0.2); border-bottom: 5px solid var(--secondary); text-decoration: none !important; }
        .layanan-card h3, .layanan-card p {text-decoration: none !important; /* Pastikan teks di dalam card bersih dari garis bawah */}
        .layanan-icon { font-size: 2.5rem; color: var(--primary); margin-bottom: 20px; height: 80px; width: 80px; background-color: rgba(141, 198, 63, 0.15); display: flex; align-items: center; justify-content: center; border-radius: 50%; transition: all 0.3s ease; }
        .layanan-card:hover .layanan-icon { background-color: var(--primary); color: white; }
        .layanan-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
        .layanan-card p { font-size: 0.9rem; color: #666; }
        .badge { background-color: rgba(0, 155, 151, 0.1); color: var(--primary); padding: 4px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; margin-bottom: 15px; display: inline-block; }
            
    /* === HALAMAN DAFTAR BERITA / KELAS BERSAMA === */
        .berita-page-container { max-width: 1200px; margin: 100px auto 40px auto; padding: 20px 5%; }
        .berita-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 25px; margin-top: 20px; }
        .berita-card { background: white; border-radius: 15px; overflow: hidden; box-shadow: 0 5px 20px rgba(0,0,0,0.05); display: flex; flex-direction: column; transition: transform 0.3s ease; border-top: 4px solid var(--primary); }
        .berita-card:hover { transform: translateY(-5px); }
        .berita-img { width: 100%; height: 200px; object-fit: cover; }
        .berita-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
        .berita-date { font-size: 0.8rem; color: var(--primary); font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
        .berita-title { font-size: 1.15rem; font-weight: 600; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; }
        .berita-snippet { font-size: 0.9rem; color: #666; margin-bottom: 15px; flex: 1; }
        .berita-link-action { margin-bottom: 15px; }
        .btn-read-berita { align-self: flex-start; padding: 8px 16px; background: rgba(0,155,151,0.1); color: var(--primary); border-radius: 6px; font-weight: 600; font-size: 0.85rem; text-decoration: none; transition: background 0.2s; cursor: pointer; border: none; display: inline-flex; align-items: center; gap: 6px; }
        .btn-read-berita:hover { background: var(--primary); color: white; }
        .btn-external-link { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; background: #2D8CFF; color: white; border-radius: 6px; font-size: 0.85rem; font-weight: 600; text-decoration: none; transition: opacity 0.2s; margin-left: 5px; }
        .btn-external-link:hover { opacity: 0.9; }

        /* HALAMAN DETAIL BACA BERITA FULL */
        .berita-container-full { max-width: 900px; margin: 100px auto 40px auto; padding: 40px; background: white; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
        .berita-full-img { width: 100%; max-height: 400px; object-fit: cover; border-radius: 10px; margin: 20px 0; }
        .berita-full-content { font-size: 1.05rem; line-height: 1.8; color: #444; }

        /* === MODAL POP-UP === */
        .modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 2000; justify-content: center; align-items: center; backdrop-filter: blur(5px); }
        .modal-content { background: white; padding: 35px; border-radius: 20px; width: 90%; max-width: 650px; position: relative; animation: modalFadeIn 0.3s ease-out; max-height: 90vh; overflow-y: auto; }
        @keyframes modalFadeIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
        .close-modal { position: absolute; top: 20px; right: 25px; font-size: 1.5rem; color: #999; cursor: pointer; transition: color 0.2s; }
        .close-modal:hover { color: var(--danger); }
        .consult-options { display: flex; flex-direction: column; gap: 15px; margin-top: 25px; }
        .btn-consult { padding: 15px 20px; border-radius: 12px; color: white; font-weight: 600; text-decoration: none; display: flex; justify-content: center; align-items: center; gap: 12px; cursor: pointer; border: none; transition: opacity 0.2s; }
        .btn-consult:hover { opacity: 0.9; }
        .btn-wa { background-color: #25D366; } 
        .btn-form { background-color: #673AB7; }
        .btn-jadwal { background-color: var(--primary); flex-direction: column; gap: 5px; }

        /* === FORM STYLES === */
        .form-group { margin-bottom: 15px; text-align: left; }
        .form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 5px; color: #444; }
        .form-control { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 0.95rem; outline: none; transition: border 0.3s; }
        .form-control:focus { border-color: var(--primary); }
        .btn-submit { width: 100%; padding: 12px; background-color: var(--primary); color: white; border: none; border-radius: 8px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: background 0.3s; margin-top: 10px; }
        .btn-submit:hover { background-color: var(--primary-dark); }
        .btn-submit:disabled { background-color: #ccc; cursor: not-allowed; }

        /* === SUB-NAV / FILTER TAB (NEW) === */
        .sub-nav-container { display: flex; justify-content: center; gap: 10px; margin: 25px auto 0 auto; max-width: 1200px; padding: 0 5%; flex-wrap: wrap; }
        .sub-tab-btn { padding: 9px 22px; border: 2px solid var(--primary); background: white; color: var(--primary); border-radius: 30px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; font-size: 0.88rem; display: flex; align-items: center; gap: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
        .sub-tab-btn.active, .sub-tab-btn:hover { background: var(--primary); color: white; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,155,151,0.25); }

       /* === MODUL BELAJAR VIEW (Gaya Asli SPA) === */
        .modul-header { margin-top: 80px; padding: 25px 3% 10px 3%; text-align: center; background: transparent; }
        .modul-header img { width: 100%; max-height: 200px; object-fit: cover; border-radius: 15px; box-shadow: 0 5px 20px rgba(0,155,151,0.15); display: block; }
        
        .modul-container { 
            display: flex; 
            flex-wrap: nowrap; /* Mencegah elemen turun ke bawah */
            width: 100%; 
            max-width: none; /* Hilangkan batasan max-width agar bisa melebar penuh */
            margin: 30px 0 40px 0; /* Hapus auto agar tidak di tengah */
            padding: 0 3%; 
            gap: 25px; 
            justify-content: flex-start !important; 
        }

        .sidebar { 
            flex: 0 0 280px; /* Ukuran tetap untuk sidebar sebelah kiri */
            background: white; 
            border-radius: 15px; 
            padding: 25px; 
            box-shadow: 0 5px 15px rgba(0,0,0,0.05); 
            align-self: flex-start; 
            position: sticky; 
            top: 100px; 
        }

        .main-content { 
            flex: 1; /* Mengisi sisa ruang secara penuh ke arah kanan */
            min-width: 0; 
            background: white; 
            border-radius: 15px; 
            padding: 40px; 
            box-shadow: 0 5px 15px rgba(0,0,0,0.05); 
            position: relative; 
            overflow-x: hidden;
        }
        .sidebar h3 { color: var(--primary); margin-bottom: 20px; border-bottom: 2px solid var(--bg-light); padding-bottom: 10px; }
        .menu-materi { list-style: none; padding: 0; }
        .menu-materi a { text-decoration: none; color: #555; display: flex; align-items: center; gap: 10px; padding: 10px 15px; border-radius: 8px; margin-bottom: 5px; font-weight: 500; transition: all 0.2s; }
        .menu-materi a:hover { background-color: var(--bg-light); color: var(--primary); }
        .menu-materi a.active { background-color: rgba(0, 155, 151, 0.1); color: var(--primary); border-left: 4px solid var(--primary); font-weight: 600; }
        
        /* EMBED MEDIA (YOUTUBE & PDF) */
        .media-embed-box { margin-bottom: 25px; border-radius: 12px; overflow: hidden; background: #1a1a1a; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
        .pdf-frame { width: 100%; height: 800px; border: none; }
        .video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; }
        .video-wrapper iframe, .video-wrapper div#yt-player { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

        /* INDIKATOR MEMBACA & UNLOCK KUIS */
        .reading-notice { background: #e8f8f5; border-left: 4px solid var(--primary); padding: 12px 18px; border-radius: 6px; font-size: 0.88rem; color: var(--primary-dark); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
        .kuis-lock-box { margin-top: 40px; padding: 25px; background: #f9f9f9; border: 2px dashed #ccc; border-radius: 12px; text-align: center; }
        .kuis-lock-box.unlocked { border-color: var(--success); background: #f0fff4; }

        /* KUIS EVALUASI STYLES */
        .kuis-box { margin-top: 30px; }
        .kuis-item { background: #ffffff; border: 1px solid var(--border-color); padding: 20px; border-radius: 10px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.03); }
        .kuis-item p { font-weight: 600; color: #333; margin-bottom: 12px; }
        .kuis-options { display: flex; flex-direction: column; gap: 8px; }
        .kuis-option-label { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; cursor: pointer; padding: 12px 16px; border-radius: 6px; background: #fff; border: 1px solid var(--border-color); transition: background-color 0.2s; }
        .kuis-option-label:hover { background-color: var(--bg-light); }
        .kuis-option-label.opt-correct { background-color: #d4edda !important; border-color: #c3e6cb !important; color: #155724; font-weight: 600; }
        .kuis-option-label.opt-wrong { background-color: #f8d7da !important; border-color: #f5c6cb !important; color: #721c24; }

        /* === DASHBOARD SUPERADMIN & STATISTIK === */
        .admin-wrapper { margin-top: 70px; padding: 30px 5%; max-width: 1300px; margin-left: auto; margin-right: auto; }
        .admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; background: white; padding: 20px; border-radius: 12px; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
        .admin-nav { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
        .tab-btn { padding: 10px 20px; background: white; border: 1px solid var(--border-color); border-radius: 8px; font-weight: 600; cursor: pointer; transition: all 0.3s; }
        .tab-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
        .admin-card { background: white; padding: 25px; border-radius: 12px; box-shadow: 0 4px 10px rgba(0,0,0,0.05); margin-bottom: 25px; }
        
        /* Stats Cards */
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 25px; }
        .stat-card { background: white; border-radius: 12px; padding: 20px; display: flex; align-items: center; gap: 20px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); border-left: 5px solid var(--primary); }
        .stat-icon { font-size: 2.2rem; color: var(--primary); }
        .stat-info h4 { font-size: 0.85rem; color: #666; font-weight: 500; }
        .stat-info .stat-number { font-size: 1.8rem; font-weight: 700; color: var(--text-dark); }

        /* Tables */
        .table-responsive { overflow-x: auto; }
        table { width: 100%; border-collapse: collapse; text-align: left; margin-top: 15px; font-size: 0.88rem; }
        th, td { padding: 12px 15px; border-bottom: 1px solid var(--border-color); }
        th { background-color: #f8f9fa; color: #444; font-weight: 600; }

        /* Styling untuk Logo PNG */
        .nav-brand img { height: 80px; width: auto; display: block; object-fit: contain; }
        footer { background-color: var(--primary); color: white; text-align: center; padding: 20px; margin-top: auto; width: 100%; }

        /* === EFEK BUKU / SLIDER MEMBACA === */
        .book-container { position: relative; width: 100%; overflow: hidden; background: #fff; border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); margin-bottom: 30px; }
        .book-slider { display: flex; transition: transform 0.4s ease-in-out; width: 100%; }
        .book-page { flex: 0 0 100%; padding: 30px 40px; box-sizing: border-box; display: flex; flex-direction: column; justify-content: space-between; min-height: 300px; }
        .book-page-content, .main-content div[style*='line-height:1.8'] { font-size: 1.15rem !important; line-height: 1.9 !important; color: #444; }
        .book-page-footer { text-align: center; margin-top: 20px; font-size: 0.85rem; color: #888; border-top: 1px dashed #ccc; padding-top: 10px; }
        .book-controls { display: flex; justify-content: space-between; padding: 15px 30px; background: #fafafa; border-top: 1px solid var(--border-color); }
        .btn-book { padding: 8px 16px; background: var(--primary); color: white; border: none; border-radius: 6px; cursor: pointer; font-weight: 600; transition: 0.3s; display: flex; align-items: center; gap: 8px;}
        .btn-book:hover:not(:disabled) { background: var(--primary-dark); }
        .btn-book:disabled { background: #ccc; cursor: not-allowed; }

        /* === CHATBOT WIDGET STYLES === */
        .chat-widget-btn { position: fixed; bottom: 30px; right: 30px; background-color: var(--primary); color: white; width: 65px; height: 65px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 1.8rem; box-shadow: 0 4px 15px rgba(0,0,0,0.2); cursor: pointer; z-index: 1001; transition: transform 0.3s ease, background 0.3s ease; }
        .chat-widget-btn:hover { transform: scale(1.1); background-color: var(--primary-dark); }
        
        .chat-window { position: fixed; bottom: 110px; right: 30px; width: 360px; height: 500px; max-height: 80vh; background: white; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); display: flex; flex-direction: column; overflow: hidden; z-index: 1001; transition: opacity 0.3s ease, transform 0.3s ease; opacity: 0; pointer-events: none; transform: translateY(20px); border: 1px solid var(--border-color); }
        .chat-window.active { opacity: 1; pointer-events: auto; transform: translateY(0); }
        
        .chat-header { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.1rem; }
        .chat-header .close-chat { cursor: pointer; font-size: 1.2rem; transition: color 0.2s; }
        .chat-header .close-chat:hover { color: var(--danger); }
        
        .chat-body { flex: 1; padding: 15px; background: #f5f8f8; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
        
        .chat-msg { max-width: 85%; padding: 10px 15px; border-radius: 12px; font-size: 0.9rem; line-height: 1.4; position: relative; animation: fadeIn 0.3s ease-in-out; }
        .bot-msg { background: white; border: 1px solid var(--border-color); color: var(--text-dark); align-self: flex-start; border-bottom-left-radius: 2px; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
        .user-msg { background: var(--primary); color: white; align-self: flex-end; border-bottom-right-radius: 2px; box-shadow: 0 2px 5px rgba(0,155,151,0.2); }
        
        .chat-footer { padding: 15px; background: white; border-top: 1px solid var(--border-color); display: flex; flex-direction: column; gap: 8px; max-height: 200px; overflow-y: auto; }
        .chat-opt-btn { background: #e8f8f5; border: 1px solid var(--primary); color: var(--primary-dark); padding: 10px 15px; border-radius: 8px; font-size: 0.85rem; font-weight: 500; cursor: pointer; text-align: left; transition: all 0.2s ease; width: 100%; display: flex; justify-content: space-between; align-items: center; }
        .chat-opt-btn:hover { background: var(--primary); color: white; }

        @media (max-width: 968px) {
            .navbar { padding: 15px 20px; }
            .nav-toggle { display: block; }
            .nav-menu { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: white; flex-direction: column; padding: 20px; box-shadow: 0 10px 15px rgba(0,0,0,0.1); }
            .nav-menu.active { display: flex; }
            .nav-brand img {height: 60px; }
            .hero { flex-direction: column; text-align: center; padding-top: 120px; }
            .hero-content { max-width: 100%; padding-right: 0; }
            .hero-content h1 { font-size: 3rem; }
            .hero-image { max-width: 90%; margin-top: 40px; }
            .modul-container { flex-direction: column; }
            .sidebar { position: static; width: 100%; }
            .book-page { padding: 20px; }
            .book-controls { padding: 12px 20px; }
            .chat-window { width: calc(100% - 40px); right: 20px; bottom: 100px; height: 60vh; }
            .chat-widget-btn { width: 55px; height: 55px; font-size: 1.5rem; bottom: 20px; right: 20px; }
        }