:root { --primary: #4F46E5; --primary-light: #EEF2FF; --success: #10B981; --success-light: #D1FAE5; --warning: #F59E0B; --warning-light: #FEF3C7; --danger: #EF4444; --bg-dark: #0F172A; --card-dark: #1E293B; --text-main: #F8FAFC; --text-muted: #94A3B8; --sidebar-width: 260px; --modern-btn: linear-gradient(135deg, #6366F1 0%, #4338CA 100%); }
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', 'Hind Siliguri', sans-serif; }
        body { background-color: var(--bg-dark); color: var(--text-main); display: flex; min-height: 100vh; overflow-x: hidden; flex-direction: column; }
        /* --- নতুন প্রি-লোডার ডিজাইন --- */
        #welcome-preloader { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background-color: #111; display: flex; justify-content: center; align-items: center; z-index: 99999; transition: opacity 0.5s ease, visibility 0.5s ease; }
        .logo-container { display: flex; flex-direction: column; align-items: center; position: relative; }
        .icon-wrapper { position: relative; width: 120px; height: 120px; display: flex; justify-content: center; align-items: center; }
        .outer-ring { position: absolute; width: 100%; height: 100%; border: 4px dashed #00d2ff; border-radius: 50%; animation: rotateClockwise 8s linear infinite; }
        .inner-globe { position: absolute; width: 70px; height: 70px; border: 3px solid #00c6ff; border-radius: 50%; animation: rotateCounterClockwise 6s linear infinite; }
        .inner-globe::before, .inner-globe::after { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; border: 2px solid #00c6ff; border-radius: 50%; }
        .inner-globe::before { transform: scaleX(0.4); } .inner-globe::after { transform: scaleY(0.4); }
        .wire-line { position: absolute; width: 150px; height: 2px; background: linear-gradient(90deg, transparent, #00c6ff, transparent); top: 50%; left: 50%; transform-origin: left center; transform: translate(-50%, -50%) rotate(-30deg); animation: wireSlide 3s ease-in-out infinite; }
        .brand-name { margin-top: 20px; font-size: 32px; font-weight: bold; display: flex; gap: 2px; flex-wrap: wrap; justify-content: center; }
        .brand-name span { display: inline-block; opacity: 0; transform: scale(0); animation: letterReveal 0.5s forwards; background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .sub-text { margin-top: 5px; font-size: 14px; color: #a0a0a0; letter-spacing: 3px; text-transform: uppercase; opacity: 0; animation: fadeInSubText 1.5s 2s forwards; }
        @keyframes rotateClockwise { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
        @keyframes rotateCounterClockwise { 0% { transform: rotate(0deg); } 100% { transform: rotate(-360deg); } }
        @keyframes wireSlide { 0% { transform: translate(-150%, -50%) rotate(-30deg); opacity: 0; } 50% { opacity: 1; } 100% { transform: translate(100%, -50%) rotate(-30deg); opacity: 0; } }
        @keyframes letterReveal { to { opacity: 1; transform: scale(1); } }
        @keyframes fadeInSubText { to { opacity: 1; } }        /* --- Layout & Sidebar --- */
        .app-container { display: flex; flex: 1; min-height: 100vh; }
        .sidebar { width: var(--sidebar-width); background-color: var(--card-dark); border-right: 1px solid #334155; display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 6000; transform: translateX(-100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
        @media (min-width: 993px) { .sidebar { transform: translateX(0); } }
        .sidebar.active { transform: translateX(0); }
        .sidebar-brand { padding: 24px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #334155; }
        .brand-info img { height: 35px; width: auto; object-fit: contain; }
        .sidebar-menu { list-style: none; padding: 20px 12px; display: flex; flex-direction: column; gap: 8px; }
        .menu-item a { display: flex; align-items: center; gap: 14px; padding: 12px 16px; color: var(--text-muted); text-decoration: none; border-radius: 12px; font-weight: 500; transition: all 0.2s ease; cursor: pointer; }
        .menu-item.active a, .menu-item a:hover { background-color: var(--primary); color: white; }
        .main-content { margin-left: 0; width: 100%; flex: 1; padding: 20px; transition: margin-left 0.3s ease; display: flex; flex-direction: column; }
        @media (min-width: 993px) { .main-content { margin-left: var(--sidebar-width); width: calc(100% - var(--sidebar-width)); padding: 30px; } }
        .fixed-topbar-wrapper { position: fixed; top: 0; left: 0; right: 0; z-index: 4000; background-color: var(--bg-dark); padding: 15px 20px 5px 20px; }
        @media (min-width: 993px) { .fixed-topbar-wrapper { left: var(--sidebar-width); padding: 25px 30px 5px 30px; } }
        .topbar { display: flex; justify-content: space-between; align-items: center; background: var(--card-dark); padding: 14px 20px; border-radius: 16px; border: 1px solid #334155; overflow: hidden; }
        .left-top-section { display: flex; align-items: center; gap: 15px; width: 100%; overflow: hidden; }
        .menu-toggle-btn { background: #0F172A; border: 1px solid #334155; color: var(--text-main); width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 18px; flex-shrink: 0; }
        @media (min-width: 993px) { .menu-toggle-btn { display: none; } }
        .welcome-box { overflow: hidden; flex: 1; width: 100%; position: relative; display: flex; align-items: center; }
        .welcome-box h1 { font-size: 20px; font-weight: 900; display: inline-flex; flex-wrap: nowrap; white-space: nowrap; letter-spacing: 1.5px; animation: smoothTextPan 5s ease-in-out infinite alternate; }
        @media (min-width: 576px) { .welcome-box h1 { font-size: 26px; } }
        .welcome-box h1 span { display: inline-block; font-weight: 900; animation: rainbowColorShift 6s linear infinite; }
        @keyframes smoothTextPan { 0% { transform: translateX(0%); } 100% { transform: translateX(10%); } }
        @keyframes rainbowColorShift { 0% { color: #FF2E93; text-shadow: 0 0 12px rgba(255, 46, 147, 0.6); } 25% { color: #FF8A00; text-shadow: 0 0 12px rgba(255, 138, 0, 0.6); } 50% { color: #00FE9B; text-shadow: 0 0 12px rgba(0, 254, 155, 0.6); } 75% { color: #00E1FF; text-shadow: 0 0 12px rgba(0, 225, 255, 0.6); } 100% { color: #FF2E93; text-shadow: 0 0 12px rgba(255, 46, 147, 0.6); } }
        .scrolling-body-content { position: relative; margin-top: 90px; padding-bottom: 40px; z-index: 10; }
        @media (min-width: 993px) { .scrolling-body-content { margin-top: 115px; } }
		        .slider-scrollable-container { position: relative; width: 100%; height: 180px; overflow: hidden; border-radius: 20px; border: 1px solid #334155; margin-bottom: 25px; }
        @media (min-width: 576px) { .slider-scrollable-container { height: 240px; } }
        @media (min-width: 993px) { .slider-scrollable-container { height: 300px; } }
        .slider-wrapper { display: flex; width: 100%; height: 100%; transition: transform 0.4s ease-in-out; }
        .slide { min-width: 100%; height: 100%; }
        .slide img { width: 100%; height: 100%; object-fit: cover; }
        .slider-dots { position: absolute; bottom: 12px; right: 20px; display: flex; gap: 6px; z-index: 10; }
        .dot { width: 6px; height: 6px; background: rgba(255, 255, 255, 0.4); border-radius: 50%; cursor: pointer; transition: all 0.3s; }
        .dot.active { background: var(--primary); width: 18px; border-radius: 10px; }
        .content-section, .bkash-payment-section { background: var(--card-dark) !important; border: 1px solid #334155; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3); }
        .bkash-payment-section { margin-bottom: 25px; border-radius: 20px; padding: 25px; text-align: center; }
        .bkash-guide-text { font-size: 15px; color: #CBD5E1; line-height: 1.6; margin-bottom: 15px; font-weight: 600; }
        .bkash-btn { display: inline-flex; align-items: center; justify-content: center; gap: 12px; width: 100%; max-width: 450px; background: linear-gradient(135deg, #D10056 0%, #E2136E 100%); color: white; text-decoration: none; padding: 15px 24px; border-radius: 16px; font-weight: 700; font-size: 16px; border: 2px solid rgba(255, 255, 255, 0.1); box-shadow: 0 8px 24px rgba(226, 19, 110, 0.3); transition: all 0.3s ease; animation: modernButtonMove 2.5s infinite ease-in-out; }
        .bkash-btn img { height: 28px; width: auto; object-fit: contain; background: #fff; padding: 2px; border-radius: 4px; }
        @keyframes modernButtonMove { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
        .content-section { border-radius: 20px; padding: 24px; margin-bottom: 25px; }
        .section-title { font-size: 18px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; color: #E2E8F0; border-bottom: 1px solid #334155; padding-bottom: 10px; font-weight: 700; }
        .package-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
        .package-card { background: #0F172A; border: 2px solid #334155; border-radius: 16px; padding: 24px; text-align: center; transition: transform 0.3s; position: relative; overflow: hidden; }
        .package-card:hover { transform: translateY(-5px); }
        .package-card.animated-bg { border-color: #8B5CF6; background: linear-gradient(125deg, #0F172A, #1E1B4B, #2E1065, #0F172A); background-size: 400% 400%; animation: waveBg 8s ease infinite; }
        @keyframes waveBg { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
        .package-title { font-size: 20px; font-weight: 700; color: #E2E8F0; }
        .package-speed { font-size: 34px; font-weight: 800; margin: 10px 0; color: #FFF; }
        .package-price { font-size: 22px; color: #34D399; font-weight: 700; margin-bottom: 15px; }
        .btn-action { width: 100%; background: var(--primary); color: white; border: none; padding: 12px; border-radius: 10px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; transition: background 0.2s; text-align: center; }
        .more-packages-trigger { text-align: center; margin-top: 25px; }
        .btn-view-more { background: transparent; color: var(--text-main); border: 2px solid var(--primary); padding: 10px 30px; font-size: 15px; font-weight: 700; border-radius: 50px; cursor: pointer; display: inline-flex; align-items: center; gap: 10px; }
        .sub-packages-panel { max-height: 0; overflow: hidden; transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
        .sub-packages-panel.show { max-height: 2000px; margin-top: 25px; }
        .shares-sell-box { background: linear-gradient(135deg, #1E1B4B 0%, #2E1065 50%, #0F172A 100%); border: 2px solid #8B5CF6; border-radius: 20px; padding: 30px; text-align: left; position: relative; overflow: hidden; box-shadow: 0 15px 35px rgba(139, 92, 246, 0.2); margin-bottom: 25px; }
        .share-badge { display: inline-block; background: #8B5CF6; color: white; padding: 6px 14px; border-radius: 50px; font-size: 12px; font-weight: 700; text-transform: uppercase; margin-bottom: 15px; letter-spacing: 1px; box-shadow: 0 4px 10px rgba(139, 92, 246, 0.4); }
        .shares-sell-box h2 { font-size: 22px; font-weight: 800; color: #FFF; margin-bottom: 15px; line-height: 1.4; }
        .shares-sell-box p { font-size: 14px; line-height: 1.8; color: #D1D5DB; margin-bottom: 20px; text-align: justify; }
        .investment-highlights { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 15px; margin-bottom: 25px; }
        .highlight-item { background: rgba(255, 255, 255, 0.04); padding: 15px; border-radius: 12px; border: 1px solid rgba(255, 255, 255, 0.05); }
        .highlight-item h4 { font-size: 14px; color: #A78BFA; margin-bottom: 5px; font-weight: 600; }
        .highlight-item p { font-size: 15px; font-weight: 700; color: #FFF; margin-bottom: 0; }
        .btn-invest { display: inline-flex; align-items: center; justify-content: center; gap: 10px; width: 100%; background: linear-gradient(90deg, #8B5CF6 0%, #6D28D9 100%); color: white; padding: 15px; border-radius: 14px; text-decoration: none; font-weight: 700; font-size: 16px; transition: all 0.3s ease; box-shadow: 0 5px 20px rgba(139, 92, 246, 0.4); }
        .map-container { position: relative; background: url('https://upload.wikimedia.org/wikipedia/commons/e/f4/Bangladesh_adm_location_map.svg') no-repeat center center; background-size: contain; min-height: 320px; border-radius: 16px; background-color: rgba(15, 23, 42, 0.8); background-blend-mode: overlay; padding: 20px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; align-items: center; border: 1px dashed #334155; }
        .location-badge { background: #1E293B; border: 1px solid #4F46E5; color: #F8FAFC; padding: 8px 16px; border-radius: 50px; text-decoration: none; font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
        .location-badge i { color: #EF4444; animation: pinBounce 1s infinite alternate; }
        @keyframes pinBounce { 0% { transform: translateY(0); } 100% { transform: translateY(-4px); } }
        .support-accordion-btn { width: 100%; background: linear-gradient(135deg, #1E293B 0%, #334155 100%); border: 2px solid var(--primary); padding: 16px 22px; border-radius: 16px; color: #FFF; font-size: 16px; font-weight: 700; display: flex; justify-content: space-between; align-items: center; cursor: pointer; }
        .support-panel-content { max-height: 0; overflow: hidden; transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
        .support-panel-content.show { max-height: 1000px; padding-top: 20px; }
        .support-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 15px; margin-top: 15px; }
        .support-card { background: #1E293B; border: 1px solid #334155; border-radius: 16px; padding: 18px; display: flex; flex-direction: column; align-items: center; text-align: center; text-decoration: none; color: var(--text-main); transition: transform 0.2s; }
        .support-card:hover { transform: translateY(-3px); }
        .apk-download-fullcard { grid-column: 1 / -1; background: linear-gradient(135deg, #059669 0%, #10B981 100%); border: none; border-radius: 16px; padding: 20px; color: white; display: flex; align-items: center; justify-content: space-between; text-decoration: none; box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3); transition: all 0.3s ease; cursor: pointer; margin-top: 5px; }
        .apk-download-fullcard:hover { transform: scale(1.02); }
        .apk-info-box { display: flex; align-items: center; gap: 15px; text-align: left; }
        .apk-info-box i { font-size: 32px; }
        .apk-info-box h3 { font-size: 18px; font-weight: 700; margin-bottom: 2px; }
        .apk-info-box p { font-size: 13px; opacity: 0.9; }
        .apk-download-btn-icon { width: 45px; height: 45px; background: rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; }
        .support-icon-avatar { width: 45px; height: 45px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 10px; }
        .office-address-card { background: rgba(79, 70, 229, 0.08); border: 1px solid rgba(79, 70, 229, 0.3); border-radius: 16px; padding: 18px; margin-bottom: 15px; display: flex; gap: 15px; align-items: flex-start; }
        .office-address-card i { font-size: 22px; color: #EF4444; margin-top: 3px; }
        .whatsapp-float { position: fixed; bottom: 30px; right: 30px; background-color: #25D366; color: white; border-radius: 50px; font-size: 30px; width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; text-decoration: none; z-index: 2500; animation: whatsappPulse 2s infinite; }
        @keyframes whatsappPulse { 0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); } 70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); } 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); } }
        .download-toast { position: fixed; bottom: -100px; left: 50%; transform: translateX(-50%); background: #1E293B; border: 2px solid var(--primary); padding: 14px 24px; border-radius: 50px; display: flex; align-items: center; gap: 12px; z-index: 5500; transition: bottom 0.5s ease; }
        .download-toast.show { bottom: 30px; }
        .toast-spinner { width: 20px; height: 20px; border: 3px solid rgba(255,255,255,0.2); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; }
        @keyframes spin { to { transform: rotate(360deg); } }
        .app-footer { background-color: #0B0F19; border-top: 1px solid #334155; padding: 20px; text-align: center; color: var(--text-muted); font-size: 13px; margin-top: auto; }
        .sidebar-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); z-index: 5000; backdrop-filter: blur(4px); }
        .sidebar-overlay.show { display: block; }