:root {
            --bg-primary: #0F172A;
            --bg-secondary: #1E293B;
            --bg-accent: #0F172A;
            --brand-primary: #FFD700;
            --brand-secondary: #EAB308;
            --brand-highlight: #FACC15;
            --success: #22C55E;
            --error: #EF4444;
            --warning: #F59E0B;
            --info: #3B82F6;
            --text-primary: #FFFFFF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-inverse: #0F172A;
            --border-light: #334155;
            --border-medium: #475569;
            --border-strong: #FFD700;
            --font-primary: 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
            --font-secondary: 'Roboto', sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { 
            background-color: var(--bg-primary); 
            color: var(--text-primary); 
            font-family: var(--font-primary); 
            line-height: 1.5;
            padding-bottom: 80px;
        }

        header {
            background-color: var(--bg-secondary);
            border-bottom: 2px solid var(--border-strong);
            padding: 10px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: white; }
        .header-logo img { width: 25px; height: 25px; border-radius: 4px; }
        .header-logo strong { font-size: 16px; font-weight: normal; }

        .auth-buttons { display: flex; gap: 10px; }
        .btn-auth { 
            padding: 8px 16px; 
            border-radius: 8px; 
            cursor: pointer; 
            font-family: var(--font-primary); 
            font-weight: 500; 
            border: none; 
            transition: 0.3s; 
        }
        .btn-login { background: var(--border-medium); color: white; }
        .btn-register { background: var(--brand-primary); color: var(--text-inverse); }
        .btn-auth:hover { opacity: 0.9; transform: translateY(-2px); }

        main { max-width: 1000px; margin: 0 auto; padding: 20px; }

        .hero-banner { 
            width: 100%; 
            aspect-ratio: 2/1; 
            border-radius: 15px; 
            overflow: hidden; 
            cursor: pointer; 
            margin-bottom: 20px;
            border: 2px solid var(--border-light);
        }
        .hero-banner img { width: 100%; height: 100%; object-fit: cover; }

        .reward-section {
            background: linear-gradient(135deg, var(--bg-secondary), #2d3748);
            padding: 30px;
            border-radius: 20px;
            text-align: center;
            border: 1px solid var(--brand-primary);
            margin-bottom: 30px;
        }
        .reward-section h2 { color: var(--brand-primary); margin-bottom: 15px; font-size: 24px; }
        .reward-section p { color: var(--text-secondary); margin-bottom: 20px; }
        .btn-cta { 
            background: var(--brand-primary); 
            color: var(--text-inverse); 
            padding: 15px 40px; 
            font-size: 20px; 
            font-weight: bold; 
            border-radius: 50px; 
            cursor: pointer; 
            border: none; 
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
        }

        .intro-card {
            background: var(--bg-secondary);
            padding: 25px;
            border-radius: 20px;
            border-left: 5px solid var(--brand-primary);
            margin-bottom: 30px;
        }
        .intro-card h1 { font-size: 32px; color: var(--brand-primary); margin-bottom: 10px; }
        .intro-card p { color: var(--text-secondary); font-size: 16px; }

        .section-title { 
            font-size: 22px; 
            margin: 30px 0 20px; 
            padding-left: 10px; 
            border-left: 4px solid var(--brand-primary); 
            color: white; 
        }

        .game-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .game-card { 
            background: var(--bg-secondary); 
            border-radius: 15px; 
            text-decoration: none; 
            overflow: hidden; 
            transition: 0.3s; 
            border: 1px solid var(--border-light);
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--brand-primary); }
        .game-card img { 
            width: 100%; 
            aspect-ratio: 1/1; 
            object-fit: cover; 
            background: #000;
        }
        .game-card h3 { 
            padding: 12px; 
            font-size: 16px; 
            text-align: center; 
            color: white; 
        }

        .payment-methods { 
            display: grid; 
            grid-template-columns: repeat(4, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
        }
        .payment-item { 
            background: var(--bg-secondary); 
            padding: 15px; 
            text-align: center; 
            border-radius: 12px; 
            border: 1px solid var(--border-light); 
            color: var(--text-secondary); 
            font-size: 14px; 
        }
        .payment-item i { 
            display: block; 
            font-size: 24px; 
            color: var(--brand-primary); 
            margin-bottom: 8px; 
        }

        .guidelines-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .guide-card { 
            background: var(--bg-secondary); 
            padding: 15px; 
            border-radius: 15px; 
            border: 1px solid var(--border-light); 
        }
        .guide-card h3 { color: var(--brand-primary); font-size: 16px; margin-bottom: 10px; }
        .guide-card p { font-size: 14px; color: var(--text-secondary); }

        .review-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 15px; 
            margin-bottom: 30px; 
        }
        .review-card { 
            background: var(--bg-secondary); 
            padding: 15px; 
            border-radius: 15px; 
            border: 1px solid var(--border-light); 
        }
        .review-user { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
        .review-user i { color: var(--brand-primary); font-size: 20px; }
        .review-user span { font-weight: bold; font-size: 14px; }
        .review-stars { color: var(--brand-highlight); font-size: 12px; margin-bottom: 10px; }
        .review-text { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; }
        .review-date { font-size: 12px; color: var(--text-muted); }

        .lottery-container { 
            background: var(--bg-secondary); 
            border-radius: 15px; 
            overflow: hidden; 
            margin-bottom: 30px; 
            border: 1px solid var(--border-light); 
        }
        .lottery-row { 
            display: grid; 
            grid-template-columns: 1fr 2fr 1fr 1fr; 
            padding: 12px 15px; 
            border-bottom: 1px solid var(--border-light); 
            font-size: 13px; 
            align-items: center; 
        }
        .lottery-row:last-child { border-bottom: none; }
        .lottery-row span:nth-child(3) { color: var(--brand-primary); font-weight: bold; }

        .provider-wall { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
        }
        .provider-item { 
            background: linear-gradient(45deg, var(--bg-secondary), #334155); 
            padding: 15px; 
            text-align: center; 
            border-radius: 10px; 
            font-weight: bold; 
            color: var(--brand-primary); 
            border: 1px solid var(--brand-highlight); 
        }

        .faq-section { margin-bottom: 30px; }
        .faq-item { 
            background: var(--bg-secondary); 
            margin-bottom: 10px; 
            border-radius: 10px; 
            overflow: hidden; 
            border: 1px solid var(--border-light); 
        }
        .faq-question { 
            padding: 15px; 
            font-weight: bold; 
            cursor: pointer; 
            background: rgba(255,255,255,0.05); 
            display: flex; 
            justify-content: space-between; 
        }
        .faq-answer { padding: 15px; color: var(--text-secondary); font-size: 14px; line-height: 1.6; }

        .safety-box { 
            background: #1a202c; 
            padding: 20px; 
            border-radius: 15px; 
            text-align: center; 
            border: 1px dashed var(--brand-primary); 
            margin-bottom: 30px; 
        }
        .safety-box i { color: var(--success); font-size: 30px; margin-bottom: 10px; }
        .safety-box p { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; }
        .safety-links a { color: var(--brand-primary); font-size: 13px; margin: 0 10px; text-decoration: none; }

        .navigator { 
            position: fixed; 
            bottom: 0; 
            left: 0; 
            right: 0; 
            background: var(--bg-secondary); 
            display: flex; 
            justify-content: space-around; 
            padding: 10px 0; 
            border-top: 2px solid var(--border-strong); 
            z-index: 2000; 
        }
        .nav-item { 
            text-decoration: none; 
            color: var(--text-secondary); 
            text-align: center; 
            font-size: 12px; 
            flex: 1; 
        }
        .nav-item i { display: block; font-size: 20px; margin-bottom: 4px; }

        footer { 
            background: var(--bg-secondary); 
            padding: 30px 20px; 
            border-top: 1px solid var(--border-light); 
            text-align: center; 
        }
        .footer-contact { margin-bottom: 20px; display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
        .footer-contact a { color: var(--text-secondary); text-decoration: none; font-size: 14px; }
        .footer-links { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 25px; 
            text-align: left; 
        }
        .footer-links a { color: var(--text-muted); text-decoration: none; font-size: 13px; display: block; margin-bottom: 5px; }
        .footer-copy { color: var(--text-muted); font-size: 12px; border-top: 1px solid var(--border-light); padding-top: 15px; }

        @media (max-width: 600px) {
            .payment-methods { grid-template-columns: repeat(2, 1fr); }
            .guidelines-grid, .review-grid { grid-template-columns: 1fr; }
            .footer-links { grid-template-columns: repeat(2, 1fr); }
        }