:root {
            --primary: #2ecc71;
            --primary-dark: #27ae60;
            --primary-light: #a8f0c6;
            --secondary: #3498db;
            --secondary-dark: #2980b9;
            --secondary-light: #a8dcf0;
            --text-dark: #2c3e50;
            --text-light: #ecf0f1;
            --background-light: #f9fafb;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-dark);
            background-color: var(--background-light);
            overflow-x: hidden;
        }
        
        .bg-primary {
            background-color: var(--primary);
        }
        
        .bg-secondary {
            background-color: var(--secondary);
        }
        
        .text-primary {
            color: var(--primary);
        }
        
        .text-secondary {
            color: var(--secondary);
        }
        
        .border-primary {
            border-color: var(--primary);
        }
        
        .border-secondary {
            border-color: var(--secondary);
        }
        
        .btn-primary {
            background-color: var(--primary);
            color: white;
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
        }
        
        .btn-secondary {
            background-color: var(--secondary);
            color: white;
            transition: all 0.3s ease;
        }
        
        .btn-secondary:hover {
            background-color: var(--secondary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
        }
        
        .card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        
        .input-field {
            border: 2px solid #ddd;
            border-radius: 8px;
            padding: 12px 16px;
            width: 100%;
            transition: all 0.3s ease;
        }
        
        .input-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
            outline: none;
        }
        
        .input-label {
            color: var(--text-dark);
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .header-wave {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            overflow: hidden;
            line-height: 0;
        }
        
        .header-wave svg {
            position: relative;
            display: block;
            width: 100%;
            height: 80px;
        }
        
        .header-wave .shape-fill {
            fill: #FFFFFF;
        }
        
        .bg-vector {
            position: absolute;
            opacity: 0.05;
            z-index: 0;
        }
        
        .progress-bar {
            width: 100%;
            height: 10px;
            border-radius: 5px;
            background-color: #f1f1f1;
            margin: 10px 0;
            overflow: hidden;
        }
        
        .progress {
            height: 100%;
            border-radius: 5px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
            width: 0%;
            transition: width 1s ease;
        }
        
        .animated-number {
            font-weight: bold;
            font-size: 28px;
            color: var(--primary);
        }
        
        .tooltip {
            position: relative;
            display: inline-block;
            cursor: help;
        }
        
        .tooltip .tooltiptext {
            visibility: hidden;
            width: 200px;
            background-color: #333;
            color: #fff;
            text-align: center;
            border-radius: 6px;
            padding: 8px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            margin-left: -100px;
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 14px;
        }
        
        .tooltip:hover .tooltiptext {
            visibility: visible;
            opacity: 1;
        }
        
        .fat-type-card {
            border-left: 4px solid;
            padding-left: 16px;
            margin: 16px 0;
            transition: all 0.3s ease;
        }
        
        .fat-type-card:hover {
            transform: translateX(10px);
        }
        
        @keyframes floatAnimation {
            0% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-20px);
            }
            100% {
                transform: translateY(0);
            }
        }
        
        .float-animation {
            animation: floatAnimation 6s ease-in-out infinite;
        }
        
        .nutrition-icon {
            font-size: 36px;
            margin-bottom: 16px;
            color: var(--primary);
        }
        
        .reference-link {
            color: var(--secondary);
            text-decoration: underline;
            transition: all 0.3s ease;
        }
        
        .reference-link:hover {
            color: var(--secondary-dark);
        }
        
        .results-section {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease-out;
        }
        
        .results-section.show {
            max-height: 2000px;
        }
        
        .chart-container {
            position: relative;
            margin: 20px auto;
            max-height: 250px;
            margin-bottom: 350px;
            max-width: 600px;
            
        }
        
        .related-tool {
            border-radius: 10px;
            padding: 20px;
            transition: all 0.3s ease;
            border: 1px solid #eee;
        }
        
        .related-tool:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        }
        
        .related-tool-icon {
            font-size: 24px;
            margin-bottom: 10px;
        }
        
        /* Fat vector illustrations */
        .fat-illustration {
            width: 100%;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .info-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--secondary);
            color: white;
            font-size: 12px;
            margin-left: 4px;
            cursor: help;
        }