:root {
            --primary: #16A34A;
            --primary-hover: #15803D;
            --danger: #EF4444;
            --danger-hover: #DC2626;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --text-sub: #64748B;
            --border: #E2E8F0;
            --glass-border: #E2E8F0;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', 'Noto Sans Bengali', sans-serif;
        }

        body {
            background-color: var(--bg);
            color: var(--text-main);
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        main.container {
            padding-bottom: calc(100px + env(safe-area-inset-bottom));
        }

        /* --- Header --- */
        header {
            background: var(--white);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
            padding: 12px 0;
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 10px;
        }

        .back-btn, .cart-header-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--text-main);
            display: flex;
            align-items: center;
            padding: 4px;
            text-decoration: none;
        }

        .category-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            flex-grow: 1;
            text-transform: capitalize;
        }

        .search-box {
            position: relative;
            width: 100%;
        }

        .search-box input {
            width: 100%;
            padding: 10px 15px 10px 40px;
            border: 1px solid var(--border);
            border-radius: 10px;
            outline: none;
            font-size: 14px;
            background: #f1f5f9;
        }

        .search-box i {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            width: 18px;
        }

        /* --- Product Grid --- */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            padding: 20px 0;
        }

        @media (min-width: 768px) {
            .product-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        @media (min-width: 1024px) {
            .product-grid {
                grid-template-columns: repeat(5, 1fr);
            }
        }

        /* --- Product Card --- */
        .product-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.2s, box-shadow 0.2s;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border);
            color: inherit;
        }

        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .product-img {
            width: 100%;
            aspect-ratio: 1/1;
            object-fit: cover;
            background: #f1f5f9;
            cursor: pointer;
        }

        .product-info {
            padding: 10px 12px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .product-name {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 5px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 40px;
            color: var(--text-main);
            word-break: break-word;
            text-decoration: none;
            cursor: pointer;
        }

        .price-box {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            margin: 4px 0;
        }

        .current-price {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
        }

        .old-price {
            font-size: 13px;
            color: #94A3B8;
            text-decoration: line-through;
        }

        .discount-badge {
            background: #EF4444;
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 6px;
            border-radius: 12px;
        }

        .save-text {
            width: 100%;
            margin-top: 2px;
            color: #DC2626;
            font-size: 12px;
            font-weight: 600;
        }

        .shop-name {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .card-buttons {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid var(--border);
        }

        .btn-action-cart, .btn-action-buynow {
            width: 100%;
            padding: 9px 10px;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 600;
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-action-cart {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .btn-action-cart:hover {
            background: var(--primary-hover);
        }

        .btn-action-buynow {
            background: var(--danger);
            color: white;
            border-color: var(--danger);
        }

        .btn-action-buynow:hover {
            background: var(--danger-hover);
        }

        .btn-loading {
            opacity: 0.75;
            cursor: not-allowed !important;
            pointer-events: none;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* --- Variant Selection Modal --- */
        .modal-overlay {
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
            padding: 15px;
        }

        .modal-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .variant-modal {
            background: var(--white);
            width: 100%;
            max-width: 440px;
            border-radius: 16px;
            padding: 20px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            max-height: 90vh;
            overflow-y: auto;
            transform: translateY(20px);
            transition: transform 0.3s ease;
        }

        .modal-overlay.active .variant-modal {
            transform: translateY(0);
        }

        .modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 15px;
            border-bottom: 1px solid var(--border);
            padding-bottom: 10px;
        }

        .modal-header h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }

        .modal-close {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--text-muted);
            padding: 4px;
        }

        .modal-product-info {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-bottom: 15px;
            background: #f8fafc;
            padding: 10px;
            border-radius: 10px;
        }

        .modal-product-info img {
            width: 60px;
            height: 60px;
            object-fit: cover;
            border-radius: 8px;
            border: 1px solid var(--border);
        }

        .modal-product-info h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .modal-base-price {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .variant-group {
            margin-bottom: 14px;
        }

        .variant-group-title {
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .variant-values {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .variant-val-btn {
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid var(--border);
            background: var(--white);
            cursor: pointer;
            color: var(--text-main);
            transition: all 0.2s;
        }

        .variant-val-btn:hover {
            border-color: var(--primary);
        }

        .variant-val-btn.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .extra-price {
            font-size: 10px;
            opacity: 0.8;
        }

        .modal-warning {
            background: #FEF2F2;
            color: #DC2626;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            text-align: center;
            border: 1px solid #FCA5A5;
        }

        .modal-price-summary {
            background: #f1f5f9;
            padding: 10px 14px;
            border-radius: 10px;
            margin-bottom: 15px;
        }

        .price-calc-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
        }

        .final-price-display {
            color: var(--primary);
            font-size: 16px;
        }

        .modal-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        /* --- Toast Notification --- */
        .toast {
            position: fixed;
            bottom: 80px;
            left: 50%;
            transform: translateX(-50%) translateY(20px);
            background: #1E293B;
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            z-index: 3000;
            opacity: 0;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
            pointer-events: none;
        }

        .toast.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        /* --- Initial & Infinite Loader GIF --- */
        .loading-gif-container {
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 30px 0;
        }

        .loading-gif-container img, .infinite-loader img {
            width: 40px;
            height: 40px;
            object-fit: contain;
        }

        .infinite-loader {
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px 0 35px;
        }

        /* --- Empty & Error States --- */
        .empty-state {
            text-align: center;
            padding: 60px 20px calc(80px + env(safe-area-inset-bottom));
        }

        .empty-state i {
            width: 50px;
            height: 50px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .empty-state h3 {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .empty-state p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .btn-more {
            background: var(--primary);
            color: white;
            padding: 12px 35px;
            border-radius: 30px;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-shadow: 0 4px 10px rgba(22, 163, 74, 0.2);
        }

        .btn-more:hover {
            background: var(--primary-hover);
        }

        .hidden { 
            display: none !important; 
        }
.free-delivery-badge {
    position: absolute;
    bottom: 8px;
    left: 8px;
    background: #00b894;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 4px;
    z-index: 2;
}

        /* --- Bottom Nav --- */
        .bottom-nav { 
            position: fixed; 
            bottom: 0; 
            left: 0; 
            width: 100%; 
            height: 60px; 
            background: rgba(255,255,255,0.96); 
            display: flex; 
            justify-content: space-around; 
            align-items: center; 
            border-top: 1px solid var(--glass-border); 
            z-index: 1000; 
            padding-bottom: env(safe-area-inset-bottom); 
            box-shadow: 0 -2px 10px rgba(0,0,0,0.03);
        }

        .nav-item { 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            text-decoration: none; 
            color: var(--text-sub); 
            font-size: 10px; 
            font-weight: 800; 
            transition: color 0.15s ease; 
            flex: 1; 
        }

        .nav-item i { 
            font-size: 17px; 
            margin-bottom: 2px; 
        }

        .nav-item.active { 
            color: var(--primary); 
        }