<style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
        
        body {
            font-family: 'Inter', sans-serif;
        }
        
        .spinner {
            display: none;
            text-align: center;
            margin: 40px 0;
        }
        
        .spinner i {
            font-size: 2rem;
            color: #2e7d32;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .tree-card:hover .tree-image img {
            transform: scale(1.1);
        }
        
        .category-btn.active {
            background-color: #e8f5e9;
            color: #2e7d32;
        }
        
        .tree-image {
            height: 200px;
            overflow: hidden;
        }
        
        .tree-image img {
            transition: transform 0.5s ease;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
    </style>
