:root {
            --hb-primary: #1B4D3E;           /* ডার্ক গ্রীন - প্রধান */
            --hb-dark-green: #0F3A2E;         /* আরও ডার্ক গ্রীন */
            --hb-purple: #800080;             /* পার্পল */
            --hb-deep-pink: #FF1493;          /* ডিপ পিংক */
            --hb-purple-light: #f3e8f3;       /* হালকা পার্পল */
            --hb-pink-light: #fff0f7;         /* হালকা পিংক */
            --hb-primary-light: #e8f3ef;      /* হালকা গ্রীন */
            
            --text-dark: #1A1A1A;
            --text-light: #4A4A4A;
            --text-muted: #666666;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --border-light: #e1e1e1;
            
            --shadow-sm: 0 5px 15px rgba(27, 77, 62, 0.08);
            --shadow-md: 0 10px 25px rgba(128, 0, 128, 0.1);
            --shadow-lg: 0 20px 40px rgba(255, 20, 147, 0.15);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Mina', sans-serif;
        }

        body {
            background-color: var(--bg-light);
            padding-top: 80px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .main-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            z-index: 9999;
            padding: 12px 24px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            backdrop-filter: blur(10px);
        }

        #LOGO {
            width: clamp(100px, 15vw, 140px);
            height: auto;
            transition: var(--transition);
        }

        #LOGO:hover {
            transform: scale(1.05);
        }

        .profile-img {
            width: clamp(38px, 8vw, 44px);
            height: clamp(38px, 8vw, 44px);
            border-radius: 50%;
            border: 2px solid var(--hb-primary);
            object-fit: cover;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(27, 77, 62, 0.2);
        }

        .profile-img:hover {
            transform: scale(1.1);
            border-color: var(--hb-deep-pink);
            box-shadow: 0 4px 12px rgba(255, 20, 147, 0.3);
        }

        .page-header {
            text-align: center;
            margin: 30px 0 20px;
            position: relative;
        }

        .page-header h2 {
            font-weight: 700;
            font-size: clamp(24px, 5vw, 32px);
            margin: 10px 0;
            background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple), var(--hb-deep-pink));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-header .subtitle {
            color: var(--hb-purple);
            font-size: clamp(14px, 3vw, 16px);
        }

        .page-header hr {
            border: none;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--hb-primary), var(--hb-purple), var(--hb-deep-pink), transparent);
            width: min(150px, 30%);
            margin: 15px auto;
        }

        .stats-section {
            margin: 20px 0 30px;
            padding: 0 15px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
            gap: 12px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 16px 8px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--hb-primary), var(--hb-deep-pink));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .stat-card:hover::before {
            transform: scaleX(1);
        }

        .stat-icon {
            width: 45px;
            height: 45px;
            background: var(--hb-primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 10px;
            font-size: 20px;
            transition: var(--transition);
        }

        .stat-card:hover .stat-icon {
            background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
            color: white !important;
        }

        .stat-count {
            font-size: clamp(20px, 4vw, 24px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: clamp(12px, 2.5vw, 13px);
            color: var(--text-muted);
            font-weight: 500;
        }

        .filter-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin: 25px 0 30px;
            padding: 0 15px;
        }

        .btn-filter {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            color: var(--text-light);
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 40px;
            transition: var(--transition);
            font-size: 15px;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            flex: 0 0 auto;
            min-width: 90px;
        }

        .btn-filter:hover {
            border-color: var(--hb-deep-pink);
            color: var(--hb-deep-pink);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-filter.active {
            background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
            border-color: transparent;
            color: white;
            box-shadow: 0 5px 15px rgba(128, 0, 128, 0.3);
        }

        .cards-container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            padding: 10px 15px 30px;
            margin: 0 auto;
            max-width: 900px;
            min-height: 400px;
            transition: opacity 0.3s ease;
        }

        .cards-container.loading {
            opacity: 0.6;
            pointer-events: none;
        }

        .leaderboard-card {
            width: 100%;
            max-width: 400px;
            height: 440px;
            background: linear-gradient(145deg, var(--hb-primary) 0%, var(--hb-purple) 100%);
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            margin: 0 auto;
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .leaderboard-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .leaderboard-card-top {
            height: 30%;
            position: relative;
            background: rgba(255, 255, 255, 0.1);
        }

        .leaderboard-img {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            padding: 5px;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: #fff;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            z-index: 2;
        }

        .leaderboard-img img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
            border: 3px solid var(--hb-deep-pink);
            display: block;
            transition: transform 0.3s ease;
        }

        .leaderboard-card:hover .leaderboard-img img {
            transform: scale(1.05);
        }

        .leaderboard-card-bottom {
            height: 70%;
            background: #fff;
            padding: 1.2rem 1rem 1rem;
            display: flex;
            flex-direction: column;
            border-radius: 28px 28px 0 0;
            margin-top: -10px;
            position: relative;
        }

        .leaderboard-card-bottom::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20px;
            right: 20px;
            height: 2px;
            background: linear-gradient(90deg, var(--hb-primary), var(--hb-deep-pink));
            border-radius: 2px;
        }

        .leaderboard-card-bottom .name {
            font-size: 1.1rem;
            font-weight: 700;
            text-align: center;
            color: var(--hb-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 3rem;
        }

        .leaderboard-card-bottom .details {
            font-size: 0.85rem;
            color: var(--text-muted);
            overflow-y: auto;
            flex: 1;
            padding-right: 4px;
        }

        .leaderboard-card-bottom .details p {
            font-size: 0.85rem;
            color: var(--text-light);
            margin: 0.3rem 0;
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            border-bottom: 1px dashed var(--border-light);
            padding-bottom: 0.3rem;
            gap: 8px;
        }

        .leaderboard-card-bottom .details p:last-child {
            border-bottom: none;
        }

        .leaderboard-card-bottom .details p strong {
            color: var(--hb-primary);
            font-weight: 600;
            min-width: 75px;
            font-size: 0.8rem;
        }

        .leaderboard-card-bottom .details p span {
            text-align: right;
            font-weight: 500;
            font-size: 0.8rem;
            color: var(--hb-purple);
        }

        .leaderboard-card-bottom .details::-webkit-scrollbar {
            width: 3px;
        }

        .leaderboard-card-bottom .details::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 3px;
        }

        .leaderboard-card-bottom .details::-webkit-scrollbar-thumb {
            background: linear-gradient(135deg, var(--hb-primary), var(--hb-deep-pink));
            border-radius: 3px;
        }

        .no-results {
            width: 100%;
            text-align: center;
            padding: 50px 20px;
            background: var(--bg-white);
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            grid-column: span 2;
        }

        .no-results i {
            color: var(--hb-primary);
            margin-bottom: 15px;
        }

        .no-results h4 {
            color: var(--text-dark);
            font-weight: 600;
            margin-bottom: 5px;
            font-size: 1.2rem;
        }

        .no-results p {
            color: var(--text-muted);
        }

        .count-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--hb-primary), var(--hb-purple));
            color: white;
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 500;
            margin: 10px 0 30px;
            font-size: 14px;
            box-shadow: var(--shadow-md);
        }

        @media (max-width: 768px) {
            body { padding-top: 70px; }
            
            .main-nav { padding: 8px 16px; }
            
            #LOGO { width: 100px; }
            
            .profile-img { width: 36px; height: 36px; }
            
            .stats-grid {
                grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
                gap: 8px;
            }
            
            .stat-card { padding: 12px 5px; }
            
            .stat-count { font-size: 18px; }
            
            .stat-label { font-size: 11px; }
            
            .btn-filter {
                padding: 8px 18px;
                font-size: 14px;
                min-width: 80px;
            }
            
            .cards-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
                padding: 10px 10px 20px;
                max-width: 700px;
            }
            
            .leaderboard-card {
                height: 420px;
                max-width: 350px;
            }
            
            .leaderboard-img {
                width: 90px;
                height: 90px;
            }
            
            .leaderboard-card-bottom .name {
                font-size: 1rem;
                min-height: 2.8rem;
            }
            
            .no-results {
                grid-column: span 2;
            }
        }

        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .filter-container {
                gap: 8px;
                justify-content: flex-start;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding: 5px 15px 10px;
                -webkit-overflow-scrolling: touch;
            }
            
            .filter-container::-webkit-scrollbar {
                display: none;
            }
            
            .btn-filter {
                padding: 6px 14px;
                font-size: 13px;
                min-width: 70px;
                flex: 0 0 auto;
            }
            
            .cards-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
                padding: 10px 8px 20px;
                max-width: 500px;
            }
            
            .leaderboard-card {
                height: 400px;
                max-width: 300px;
            }
            
            .leaderboard-card-bottom .name {
                font-size: 0.9rem;
                min-height: 2.5rem;
            }
            
            .leaderboard-card-bottom .details p {
                font-size: 0.75rem;
            }
            
            .leaderboard-card-bottom .details p strong {
                min-width: 65px;
                font-size: 0.7rem;
            }
            
            .leaderboard-card-bottom .details p span {
                font-size: 0.7rem;
            }
            
            .no-results {
                grid-column: span 2;
                padding: 30px 15px;
            }
        }

        @media (max-width: 480px) {
            .page-header h2 { font-size: 22px; }
            
            .page-header .subtitle { font-size: 13px; }
            
            .btn-filter { 
                padding: 5px 12px; 
                font-size: 12px;
                min-width: 65px;
            }
            
            .stat-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            
            .stat-count { font-size: 16px; }
            
            .stat-label { font-size: 10px; }
            
            .cards-container {
                gap: 10px;
                padding: 10px 6px 20px;
            }
            
            .leaderboard-card {
                height: 380px;
                max-width: 280px;
            }
            
            .leaderboard-img {
                width: 80px;
                height: 80px;
            }
        }

        @media (max-width: 320px) {
            .cards-container {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .leaderboard-card {
                max-width: 260px;
                height: 400px;
            }
            
            .no-results {
                grid-column: span 1;
            }
        }

        @media (max-height: 600px) and (orientation: landscape) {
            .stats-section { margin: 10px 0; }
            
            .cards-container { gap: 15px; }
            
            .leaderboard-card {
                height: 380px;
            }
        }

        @media (hover: none) {
            .leaderboard-card:hover,
            .stat-card:hover,
            .btn-filter:hover {
                transform: none;
            }
        }

        .fa-spinner {
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }