body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0 ;
            background-color: #e0f7e0;
        }
        header {
            background-color: #1b5e20;
            color: white;
            padding: 20px;
            text-align: center;
            font-size: 32px;
            font-weight: bold;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
            border-radius: 0 0 15px 15px;
        }
        nav {
            background-color: #2e7d32;
            padding: 15px 0;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }
        nav ul {
            list-style-type: none;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            gap: 30px;
        }
        nav ul li {
            margin: 0;
        }
        nav ul li a {
            color: white;
            text-decoration: none;
            font-size: 18px;
            padding: 10px 20px;
            border-radius: 5px;
            transition: background-color 0.3s;
        }
        nav ul li a:hover,
        nav ul li a.active {
            background-color: rgba(255, 255, 255, 0.2);
        }
        .container {
            width: 90%;
            margin: 30px auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 25px;
        }
        .product {
            background-color: white;
            border-radius: 15px;
            padding: 15px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .product:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);
        }
        .product img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 15px;
        }
        .add-product-btn {
            position: fixed;
            bottom: 20px;
            left: 20px;
            width: 65px;
            height: 65px;
            background-color: #1b5e20;
            color: white;
            border-radius: 50%;
            font-size: 38px;
            text-align: center;
            line-height: 65px;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
            transition: background-color 0.3s;
            z-index: 100;
        }
        .add-product-btn:hover {
            background-color: #145a17;
        }
        .add-product-form {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            width: 320px;
            text-align: center;
            z-index: 1000;
        }
        .add-product-form input, .add-product-form textarea, .add-product-form select {
            width: 100%;
            margin: 12px 0;
            padding: 10px;
            border-radius: 6px;
            border: 1px solid #ccc;
            font-size: 16px;
            box-sizing: border-box;
        }
        button {
            background-color: #1b5e20;
            color: white;
            border: none;
            padding: 12px 18px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s;
            margin: 5px;
        }
        button:hover {
            background-color: #145a17;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }
        .section {
            display: none;
        }
        .section.active {
            display: block;
        }