:root {
            --primary-color: #28a745;
            --secondary-color: #1e8449;
            --bg-start-color: powderblue;
            --card-bg: #FFFFFF;
            --text-color: #000000;
            --light-text-color: #333333;
            --accent-color: var(--primary-color);
            --hover-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
            --transition: 0.4s ease-in-out;
            --sidebar-bg: #ffffff;
            --sidebar-text-color: var(--text-color);
            --sidebar-width: 250px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Inter', sans-serif;
            background: var(--bg-start-color);
            color: var(--text-color);
            transition: margin-left var(--transition);
            overflow-x: hidden;
            min-height: 100vh;
        }

        body.sidebar-open, body.modal-open {
            overflow: hidden;
        }

        header {
            background-color: var(--primary-color);
            padding: 15px 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            position: relative;
            z-index: 998;
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }
        header a {
            color: white;
            text-decoration: none;
        }

        .logo {
            display: flex;
            align-items: center;
            color: white;
            font-size: 1.6rem;
            font-weight: 600;
            left: 30px;
        }
        .logo i { margin-right: 10px; margin-left: 30px }

        .hamburger-icon {
            font-size: 22px;
            color: white;
            background-color: var(--primary-color);
            padding: 12px 14px;
            border-radius: var(--border-radius);
            cursor: pointer;
            position: fixed;
            top: 4px;
            left: 8px;
            z-index: 1002;
            box-shadow: var(--card-shadow);
            transition: left var(--transition), background-color 0.2s;
	    animation: attention-shake 2s ease-in-out 1.5s 1;
        }
        .hamburger-icon:hover {
            background-color: var(--secondary-color);
        }

        #sidebar-nav {
            height: 100%;
            width: var(--sidebar-width);
            position: fixed;
            z-index: 1001;
            top: 0;
            left: calc(-1 * var(--sidebar-width));
            background-color: var(--sidebar-bg);
            overflow-x: hidden;
            overflow-y: auto;
            padding-top: 80px;
            transition: left var(--transition);
            box-shadow: 4px 0 10px rgba(0,0,0,0.1);
            border-right: 1px solid #e0e0e0;
        }
        #sidebar-nav.active {
            left: 0;
        }
        #sidebar-nav a, #sidebar-nav .sidebar-filter-btn {
            padding: 14px 15px 14px 25px;
            text-decoration: none;
            font-size: 1rem;
            color: var(--sidebar-text-color);
            display: flex;
            align-items: center;
            transition: background-color 0.2s, color 0.2s, transform 0.2s;
            border: none;
            background: none;
            width: calc(100% - 20px);
            text-align: left;
            cursor: pointer;
            box-sizing: border-box;
            border-radius: 8px;
            margin: 5px 10px;
        }
        #sidebar-nav a i, #sidebar-nav .sidebar-filter-btn i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        #sidebar-nav a:hover, #sidebar-nav .sidebar-filter-btn:hover {
            background-color: #e6f7ed;
            color: var(--primary-color);
            transform: translateX(5px);
        }
        #sidebar-nav .sidebar-filter-btn.active-filter-sidebar {
            background-color: var(--primary-color);
            color: white;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        #sidebar-nav .close-sidebar-btn {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 30px;
            font-weight: bold;
            color: var(--light-text-color);
            background: none;
            border: none;
            padding: 0;
            line-height: 1;
            cursor: pointer;
            transition: color 0.2s;
        }
        #sidebar-nav .close-sidebar-btn:hover {
            color: #dc3545;
            background-color: transparent;
        }
        #sidebar-nav hr {
            margin: 20px 15px;
            border: 0;
            border-top: 1px solid #e0e0e0;
        }
        #sidebar-nav .sidebar-heading {
            padding: 10px 25px 5px;
            font-size: 0.95rem;
            color: var(--light-text-color);
            text-transform: uppercase;
            font-weight: 600;
            margin-top: 15px;
        }

        #heading-container {
            text-align: center;
            padding: 60px 20px 40px;
            background-color: powderblue;
        }

        #heading-container h1 {
            font-size: 3rem;
            margin: 0;
            font-weight: 700;
        }
        #heading-container p {
            margin: 15px 0 0;
            color: var(--light-text-color);
            font-size: 1.1rem;
        }

        .card-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 25px;
            padding: 30px;
            max-width: 1400px;
            margin: 0 auto;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--border-radius);
            box-shadow: var(--card-shadow);
            border: 1px solid #e0e0e0;
            width: 300px;
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
        }
        .card:hover {
            transform: translateY(-8px);
            box-shadow: var(--hover-shadow);
        }
        .card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            cursor: pointer;
        }
        .card-content {
            padding: 20px;
        }
        .card-content h3 {
            margin: 0 0 10px;
            font-size: 1.3rem;
        }
        .card-content p {
            margin: 6px 0;
            color: var(--light-text-color);
            font-size: 0.95rem;
            line-height: 1.5;
        }
        .card-content p b {
            color: var(--text-color);
        }
        .card-content .price {
            font-weight: 700;
            font-size: 1.1rem;
            margin-top: 10px;
        }
        .seller {
            display: flex;
            align-items: center;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid #f0f0f0;
        }
        .seller .whatsapp-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 15px;
            border: 3px solid var(--primary-color);
            background-color: #25D366;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: white;
            flex-shrink: 0;
            transition: border-color var(--transition);
        }
        .seller img {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            margin-right: 12px;
            border: 2px solid var(--primary-color);
            object-fit: cover;
        }
        .seller-info {
            font-size: 0.9rem;
            line-height: 1.4;
        }
        .seller-info p {
            margin: 0;
        }

        footer {
            background: var(--primary-color);
            color: white;
            text-align: center;
            padding: 30px 20px;
            margin-top: 60px;
        }
        footer a {
            color: white;
            text-decoration: underline;
        }
        footer a:hover {
            color: #e0e0e0;
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1050;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(0,0,0,0.85);
            animation: fadeIn 0.3s ease-out;
        }
        .modal-content {
            display: block;
            position: relative;
            margin: auto;
            padding: 0;
            max-width: 100%;
            max-height: 100%;
            top: 50%;
            transform: translateY(-50%);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .modal-img {
            width: 100%;
            height: auto;
            max-height: 85vh;
            object-fit: contain;
            border-radius: var(--border-radius);
        }
        .close {
            position: absolute;
            top: 15px;
            right: 25px;
            color: #f8f9fa;
            font-size: 40px;
            font-weight: bold;
            cursor: pointer;
            transition: 0.2s;
            z-index: 1051;
        }
        .close:hover {
            color: var(--accent-color);
        }
        .modal-caption {
            margin-top: 15px;
            text-align: center;
            color: white;
            font-size: 1.3rem;
            text-shadow: 0 1px 3px rgba(0,0,0,0.5);
        }

        .loading-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 25px;
            padding: 30px;
            max-width: 1400px;
            margin: 0 auto;
        }
        .loading-card {
            background: var(--card-bg);
            border-radius: var(--border-radius);
            box-shadow: var(--card-shadow);
            border: 1px solid #e0e0e0;
            width: 300px;
            height: 350px;
            overflow: hidden;
            position: relative;
        }
        .loading-img {
            width: 100%; height: 180px;
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%; animation: loading-animation 1.5s infinite;
        }
        .loading-content { padding: 20px; }
        .loading-title {
            height: 24px; width: 80%; margin-bottom: 16px;
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%; animation: loading-animation 1.5s infinite; border-radius: 4px;
        }
        .loading-text {
            height: 16px; width: 40%; margin-bottom: 8px;
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%; animation: loading-animation 1.5s infinite; border-radius: 4px;
        }
        .loading-text:nth-child(3) { width: 90%; }
        .loading-seller { display: flex; align-items: center; margin-top: 20px; }
        .loading-avatar {
            width: 45px; height: 45px; border-radius: 50%; margin-right: 12px;
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%; animation: loading-animation 1.5s infinite;
        }
        .loading-seller-info { flex: 1; }
        .loading-info-line {
            height: 12px; width: 60%; margin-bottom: 6px;
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%; animation: loading-animation 1.5s infinite; border-radius: 4px;
        }
        .loading-info-line:last-child { width: 40%; }
        @keyframes loading-animation {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

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

        @media (max-width: 768px) {
            header {
                padding: 10px 20px;
            }
            .logo {
                font-size: 1.3rem;
            }
            .hamburger-icon {
                top: 15px;
                left: 15px;
                font-size: 18px;
                padding: 8px 10px;
            }
            #sidebar-nav {
                width: 200px;
                padding-top: 70px;
            }
            #sidebar-nav .close-sidebar-btn {
                top: 15px;
                right: 15px;
                font-size: 28px;
            }
            #heading-container {
                padding: 40px 15px 30px;
            }
            #heading-container h1 {
                font-size: 2rem;
            }
            #heading-container p {
                font-size: 1rem;
            }
            .card-grid {
                padding: 20px;
                gap: 15px;
            }
            .card {
                width: 100%;
                max-width: 320px;
            }
            .modal-content {
                max-width: 95%;
                max-height: 95%;
            }
            .close {
                font-size: 30px;
                top: 10px;
                right: 15px;
            }
            .modal-caption {
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .card {
                width: calc(100% - 20px);
            }
            .card-content {
                padding: 15px;
            }
            .card-content h3 {
                font-size: 1.1rem;
            }
            .card-content p {
                font-size: 0.9rem;
            }
            .seller img {
                width: 35px;
                height: 35px;
            }
            .seller-info {
                font-size: 0.85rem;
            }

        }

      @keyframes attention-shake {
           0%, 100% { transform: translateX(0); }
           10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
           20%, 40%, 60%, 80% { transform: translateX(5px); }
      }