:root {
            --primary-color: #4F46E5;
            --primary-light: #818CF8;
            --primary-dark: #3730A3;
            --secondary-color: #06D6A0;
            --secondary-light: #4ADEBB;
            --accent-color: #F59E0B;
            --accent-light: #FBBF24;
            --danger-color: #EF4444; 
            --warning-color: #F59E0B;
            --success-color: #10B981;
            --info-color: #3B82F6;
            --light-bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --dark-color: #1E293B;
            --gray-color: #64748B;
            --light-gray: #F1F5F9;
            --border-radius: 16px;
            --box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            --box-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.1);
            --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
            --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-light));
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #F0F4F8 0%, #E6F7FF 50%, #F0FFF4 100%);
            color: var(--dark-color);
            line-height: 1.7;
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%239C92AC" fill-opacity="0.03"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/></g></g></svg>');
            z-index: -1;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }

        header {
            text-align: center;
            margin-bottom: 50px;
            padding: 60px 30px;
            background: var(--gradient-primary);
            color: var(--card-bg);
            border-radius: var(--border-radius);
            box-shadow: 0 20px 40px rgba(79, 70, 229, 0.25);
            position: relative;
            overflow: hidden;
            transform: translateY(0);
            transition: transform 0.5s ease;
        }

        header:hover {
            transform: translateY(-5px);
        }

        header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
            animation: shimmer 8s infinite linear;
        }

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

        header h1 {
            font-size: 3.5rem;
            margin-bottom: 15px;
            font-weight: 700;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
            position: relative;
            z-index: 1;
            font-family: 'Poppins', sans-serif;
        }

        header h1 i {
            margin-right: 20px;
            color: #FFD700;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
            40% {transform: translateY(-10px);}
            60% {transform: translateY(-5px);}
        }

        header p {
            font-size: 1.4rem;
            opacity: 0.95;
            font-weight: 400;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        /* New Layout Structure */
        .app-container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
        }

        @media (min-width: 1024px) {
            .app-container {
                grid-template-areas:
                    "calculator analysis"
                    "history history";
                grid-template-columns: 1fr 1.2fr;
            }
            .calculator-section { grid-area: calculator; }
            .photo-analysis-section { grid-area: analysis; }
            .food-history-section { grid-area: history; }
        }

        section {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
            position: relative;
            overflow: hidden;
        }

        section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-primary);
        }

        section:hover {
            transform: translateY(-5px);
            box-shadow: var(--box-shadow-hover);
        }

        section h2 {
            color: var(--primary-dark);
            margin-bottom: 30px;
            font-size: 1.8rem;
            display: flex;
            align-items: center;
            font-weight: 600;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--light-gray);
            font-family: 'Poppins', sans-serif;
        }

        section h2 i {
            margin-right: 15px;
            font-size: 1.6rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        /* Calculator Section */
        .calculator-form {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .input-group {
            display: flex;
            flex-direction: column;
        }

        .input-group label {
            margin-bottom: 10px;
            font-weight: 600;
            color: var(--dark-color);
            font-size: 0.95rem;
        }

        .input-group input,
        .input-group select {
            padding: 18px;
            border: 2px solid var(--light-gray);
            border-radius: 12px;
            font-size: 1rem;
            transition: var(--transition);
            background-color: var(--light-bg);
            font-family: 'Inter', sans-serif;
        }

        .input-group input:focus,
        .input-group select:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
            background-color: var(--card-bg);
        }

        .radio-group {
            display: flex;
            gap: 15px;
            padding: 15px 0;
            align-items: center;
        }

        .radio-group input[type="radio"] {
            display: none;
        }

        .radio-group label {
            cursor: pointer;
            padding: 14px 28px;
            border: 2px solid var(--light-gray);
            border-radius: 30px;
            transition: var(--transition);
            font-weight: 600;
            background-color: var(--light-bg);
        }

        .radio-group input[type="radio"]:checked + label {
            background: var(--gradient-primary);
            color: var(--card-bg);
            border-color: var(--primary-color);
            box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
            transform: scale(1.05);
        }

        .btn-primary,
        .btn-secondary {
            padding: 18px 36px;
            border: none;
            border-radius: 12px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            width: fit-content;
            position: relative;
            overflow: hidden;
            font-family: 'Poppins', sans-serif;
        }

        .btn-primary::before,
        .btn-secondary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            transition: left 0.5s ease;
        }

        .btn-primary:hover::before,
        .btn-secondary:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: var(--card-bg);
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(79, 70, 229, 0.4);
        }

        .btn-secondary {
            background-color: var(--light-gray);
            color: var(--dark-color);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }

        .btn-secondary:hover {
            background-color: #E2E8F0;
            transform: translateY(-5px);
        }

        .result-container {
            margin-top: 30px;
            padding: 35px;
            background: linear-gradient(135deg, #EEF2FF, #E0E7FF);
            border-radius: var(--border-radius);
            border-left: 6px solid var(--primary-color);
            position: relative;
            overflow: hidden;
        }

        .result-container::after {
            content: '';
            position: absolute;
            bottom: -20px;
            right: -20px;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, rgba(79, 70, 229, 0) 70%);
            border-radius: 50%;
        }

        .result-container h3 {
            margin-bottom: 25px;
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 1.4rem;
            font-family: 'Poppins', sans-serif;
        }

        .result-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .result-item {
            display: flex;
            flex-direction: column;
            padding: 30px;
            background-color: var(--card-bg);
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .result-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-primary);
        }

        .result-item:hover {
            transform: translateY(-8px) scale(1.03);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }

        .result-label {
            font-size: 0.95rem;
            color: var(--gray-color);
            margin-bottom: 10px;
            font-weight: 600;
        }

        .result-value {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .result-unit {
            font-size: 0.95rem;
            color: var(--gray-color);
            margin-top: 5px;
        }

        /* Photo Analysis Section */
        .ai-info {
            margin-bottom: 30px;
        }

        .info-box {
            display: flex;
            align-items: center;
            padding: 25px;
            background: linear-gradient(135deg, #EDE9FE, #DDD6FE);
            border-radius: var(--border-radius);
            border-left: 6px solid var(--primary-color);
            position: relative;
            overflow: hidden;
        }

        .info-box::after {
            content: '';
            position: absolute;
            top: -20px;
            right: -20px;
            width: 100px;
            height: 100px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, rgba(79, 70, 229, 0) 70%);
            border-radius: 50%;
        }

        .info-box i {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-right: 25px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }

        .analysis-tabs {
            display: flex;
            margin-bottom: 30px;
            background-color: var(--light-gray);
            padding: 8px;
            border-radius: 16px;
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
        }

        .tab-btn {
            flex: 1;
            padding: 18px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--gray-color);
            transition: var(--transition);
            border-radius: 12px;
            position: relative;
        }

        .tab-btn.active {
            background-color: var(--card-bg);
            color: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .tab-btn:hover:not(.active) {
            color: var(--primary-color);
        }

        .upload-container,
        .camera-container,
        .search-container {
            margin-bottom: 30px;
        }

        .upload-area {
            border: 3px dashed #CBD5E1;
            border-radius: var(--border-radius);
            padding: 60px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            background-color: var(--light-bg);
            position: relative;
            background-image: url("data:image/svg+xml,%3csvg width='100%25' height='100%25' xmlns='http://www.w3.org/2000/svg'%3e%3crect width='100%25' height='100%25' fill='none' stroke='%23CBD5E1' stroke-width='3' stroke-dasharray='10' stroke-dashoffset='0' stroke-linecap='square'/%3e%3c/svg%3e");
        }

        .upload-area:hover {
            border-color: var(--primary-color);
            background-color: #E0E7FF;
            transform: translateY(-5px);
        }

        .upload-area i {
            font-size: 4.5rem;
            color: var(--gray-color);
            margin-bottom: 20px;
        }

        .image-preview {
            position: relative;
            margin-bottom: 25px;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }

        .image-preview img {
            width: 100%;
            max-height: 350px;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

        .image-preview:hover img {
            transform: scale(1.03);
        }

        .preview-actions {
            position: absolute;
            top: 20px;
            right: 20px;
        }

        .camera-view {
            position: relative;
            margin-bottom: 25px;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 12px 24px rgba(0,0,0,0.2);
        }

        #camera-video {
            width: 100%;
            border-radius: var(--border-radius);
            background-color: #000;
        }

        #detection-canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .camera-controls {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .search-box {
            display: flex;
            gap: 15px;
            margin-bottom: 25px;
        }

        .search-box input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #E5E7EB;
            border-radius: var(--border-radius);
            font-size: 16px;
            transition: var(--transition);
            background-color: var(--card-bg);
            color: var(--text-dark);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .search-filters {
            margin-bottom: 25px;
            padding: 20px;
            background-color: var(--light-bg);
            border-radius: var(--border-radius);
            border: 1px solid #E5E7EB;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .filter-group label {
            font-weight: 600;
            color: var(--text-dark);
            min-width: 80px;
        }

        .filter-group select {
            flex: 1;
            padding: 10px 15px;
            border: 2px solid #E5E7EB;
            border-radius: var(--border-radius);
            font-size: 14px;
            background-color: var(--card-bg);
            color: var(--text-dark);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-group select:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .search-results {
            max-height: 400px;
            overflow-y: auto;
            border: 1px solid #E5E7EB;
            border-radius: var(--border-radius);
            background-color: var(--card-bg);
        }

        .search-result-item {
            padding: 20px;
            border-bottom: 1px solid #E5E7EB;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .search-result-item:hover {
            background-color: var(--light-bg);
            transform: translateX(5px);
        }

        .search-result-item:last-child {
            border-bottom: none;
        }

        .search-result-food {
            flex: 1;
        }

        .search-result-name {
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 5px;
        }

        .search-result-category {
            font-size: 12px;
            color: #6B7280;
            background-color: var(--light-bg);
            padding: 2px 8px;
            border-radius: 12px;
            display: inline-block;
        }

        .search-result-nutrition {
            text-align: right;
            font-size: 14px;
            color: var(--text-dark);
        }

        .search-result-calories {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 3px;
        }

        .search-result-macros {
            font-size: 12px;
            color: #6B7280;
        }

        .model-status {
            display: flex;
            align-items: center;
            padding: 25px;
            background: linear-gradient(135deg, #FEF3C7, #FDE68A);
            border-radius: var(--border-radius);
            margin-bottom: 30px;
            border-left: 6px solid var(--warning-color);
            font-weight: 600;
        }

        .model-status i {
            margin-right: 20px;
            color: var(--warning-color);
            font-size: 1.8rem;
        }

        .detection-result {
            margin-top: 30px;
            padding: 30px;
            background-color: var(--light-gray);
            border-radius: var(--border-radius);
        }

        .detection-result h3 {
            margin-bottom: 25px;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 1.4rem;
            font-family: 'Poppins', sans-serif;
        }

        .food-items-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 20px;
        }

        .food-item {
            padding: 22px;
            background-color: var(--card-bg);
            border-radius: 16px;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            border: 2px solid var(--light-gray);
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }

        .food-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(6, 214, 160, 0.05));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .food-item:hover::before {
            opacity: 1;
        }

        .food-item:hover {
            border-color: var(--primary-color);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            transform: translateY(-8px);
        }

        .food-item.selected {
            background: linear-gradient(135deg, #EEF2FF, #E0E7FF);
            border-color: var(--primary-dark);
            transform: scale(1.05);
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.2);
        }

        .nutrition-result {
            margin-top: 30px;
            padding: 35px;
            background: linear-gradient(135deg, var(--light-gray), #E2E8F0);
            border-radius: var(--border-radius);
            position: relative;
            overflow: hidden;
        }

        .nutrition-result::after {
            content: '';
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
            border-radius: 50%;
        }

        .nutrition-result h3 {
            margin-bottom: 25px;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 1.4rem;
            font-family: 'Poppins', sans-serif;
        }

        .selected-food {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--primary-dark);
            text-align: center;
            padding: 18px;
            background-color: var(--card-bg);
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }

        .nutrition-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 25px;
            margin-bottom: 30px;
        }

        .nutrition-item {
            display: flex;
            align-items: center;
            padding: 25px;
            background-color: var(--card-bg);
            border-radius: 16px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .nutrition-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
        }

        .nutrition-item:nth-child(1)::before {
            background: var(--gradient-primary);
        }

        .nutrition-item:nth-child(2)::before {
            background: var(--gradient-secondary);
        }

        .nutrition-item:nth-child(3)::before {
            background: var(--gradient-accent);
        }

        .nutrition-item:nth-child(4)::before {
            background: linear-gradient(to bottom, var(--info-color), #60A5FA);
        }

        .nutrition-item:hover {
            transform: translateY(-8px) scale(1.03);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }

        .nutrition-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            border-radius: 50%;
            margin-right: 20px;
            flex-shrink: 0;
        }

        .nutrition-icon i {
            font-size: 2rem;
        }

        .nutrition-item:nth-child(1) .nutrition-icon {
            background: linear-gradient(135deg, #E0E7FF, #C7D2FE);
            color: var(--primary-color);
        }

        .nutrition-item:nth-child(2) .nutrition-icon {
            background: linear-gradient(135deg, #D1FAE5, #A7F3D0);
            color: var(--success-color);
        }

        .nutrition-item:nth-child(3) .nutrition-icon {
            background: linear-gradient(135deg, #FEF3C7, #FDE68A);
            color: var(--accent-color);
        }

        .nutrition-item:nth-child(4) .nutrition-icon {
            background: linear-gradient(135deg, #DBEAFE, #BFDBFE);
            color: var(--info-color);
        }

        .nutrition-info {
            display: flex;
            flex-direction: column;
        }

        .nutrition-label {
            font-size: 0.95rem;
            color: var(--gray-color);
            font-weight: 600;
        }

        .nutrition-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark-color);
        }

        .nutrition-unit {
            font-size: 0.95rem;
            color: var(--gray-color);
        }

        /* Food History Section */
        .history-controls {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 25px;
        }

        .food-history {
            min-height: 250px;
            margin-bottom: 25px;
        }

        .empty-message {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px;
            color: var(--gray-color);
        }

        .empty-message i {
            font-size: 4.5rem;
            margin-bottom: 20px;
        }

        .food-history-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 25px;
            background: linear-gradient(135deg, var(--light-bg), var(--light-gray));
            border-radius: 16px;
            margin-bottom: 20px;
            transition: var(--transition);
            border-left: 5px solid var(--primary-light);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            position: relative;
            overflow: hidden;
        }

        .food-history-item::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, rgba(79, 70, 229, 0) 70%);
            border-radius: 0 0 0 80px;
        }

        .food-history-item:hover {
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            transform: translateX(10px);
        }

        .food-info {
            flex-grow: 1;
        }

        .food-name {
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark-color);
            font-size: 1.2rem;
        }

        .food-nutrition {
            display: flex;
            gap: 25px;
            font-size: 0.95rem;
            color: var(--gray-color);
            flex-wrap: wrap;
        }

        .food-actions {
            display: flex;
            gap: 15px;
        }

        .delete-btn {
            background: none;
            border: none;
            color: var(--danger-color);
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
            padding: 8px;
        }

        .delete-btn:hover {
            color: #DC2626;
            transform: scale(1.2) rotate(10deg);
        }

        .total-nutrition {
            padding: 35px;
            background: linear-gradient(135deg, var(--light-gray), #E2E8F0);
            border-radius: var(--border-radius);
            position: relative;
            overflow: hidden;
        }

        .total-nutrition::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0) 70%);
            border-radius: 50%;
        }

        .total-nutrition h3 {
            margin-bottom: 25px;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 1.4rem;
            font-family: 'Poppins', sans-serif;
        }

        .nutrition-summary {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .summary-item {
            display: flex;
            flex-direction: column;
        }

        .summary-label {
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark-color);
            font-size: 1.1rem;
        }

        .summary-bar {
            height: 18px;
            background-color: #CBD5E1;
            border-radius: 10px;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
        }

        .summary-progress {
            height: 100%;
            background: var(--gradient-primary);
            transition: width 1s ease;
            border-radius: 10px;
            background-size: 200% 100%;
            animation: progress-shine 2s infinite linear;
        }

        @keyframes progress-shine {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        .summary-value {
            font-size: 1.1rem;
            color: var(--dark-color);
            font-weight: 600;
        }

        /* Footer */
        footer {
            text-align: center;
            margin-top: 60px;
            padding: 30px;
            color: var(--gray-color);
            font-size: 1rem;
            border-top: 1px solid #E2E8F0;
        }

        .tech-credit {
            margin-top: 10px;
            font-style: italic;
            font-size: 0.9rem;
        }

        /* Utility Classes */
        .hidden {
            display: none !important;
        }

        /* Responsive Design */
        @media (max-width: 1023px) {
            .app-container {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 767px) {
            header h1 {
                font-size: 2.8rem;
            }
            
            .calculator-form {
                grid-template-columns: 1fr;
            }
            
            .result-grid {
                grid-template-columns: 1fr;
            }
            
            .nutrition-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .food-items-list {
                grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 15px;
            }
            
            section {
                padding: 25px;
            }
            
            header h1 {
                font-size: 2.4rem;
            }
            
            .nutrition-grid {
                grid-template-columns: 1fr;
            }
            
            .food-items-list {
                grid-template-columns: 1fr;
            }
            
            .food-nutrition {
                flex-direction: column;
                gap: 5px;
            }
        }