:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --nutrition-green: #198754;
            --nutrition-yellow: #ffc107;
            --nutrition-orange: #fd7e14;
            --nutrition-red: #dc3545;
        }
         
        .nutrition-info-box {
            background-color: rgba(25, 135, 84, 0.05);
            border-left: 3px solid var(--nutrition-green);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        
        .warning-box {
            background-color: rgba(255, 193, 7, 0.05);
            border-left: 3px solid var(--warning-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
         
        
        /* Toggle switch for calculation modes */
        .calculation-modes {
            display: flex;
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 4px;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        
        .mode-btn {
            flex: 1;
            text-align: center;
            padding: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
            min-width: 120px;
            margin: 2px;
        }
        
        .mode-btn.active {
            background-color: var(--primary-color);
            color: white;
        }
        
        /* Toast notifications */
        .toast-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1050;
        }
        
        /* Action buttons */
        .action-btn {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 0.5rem 1rem;
            margin-left: 0.5rem;
            transition: all 0.3s;
            color: var(--text-color);
        }
        
        .action-btn:hover {
            background-color: var(--light-gray);
            color: var(--primary-color);
        }
        
        /* Sodium-specific styling */
        .sodium-status-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .sodium-status-optimal {
            background-color: var(--nutrition-green);
        }
        
        .sodium-status-moderate {
            background-color: var(--nutrition-yellow);
        }
        
        .sodium-status-high {
            background-color: var(--nutrition-orange);
        }
        
        .sodium-status-danger {
            background-color: var(--nutrition-red);
        }
        
        .sodium-classification {
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 5px solid;
        }
        
        .sodium-optimal {
            background-color: rgba(40, 167, 69, 0.1);
            border-left-color: var(--nutrition-green);
        }
        
        .sodium-moderate {
            background-color: rgba(255, 193, 7, 0.1);
            border-left-color: var(--nutrition-yellow);
        }
        
        .sodium-high {
            background-color: rgba(253, 126, 20, 0.1);
            border-left-color: var(--nutrition-orange);
        }
        
        .sodium-danger {
            background-color: rgba(220, 53, 69, 0.1);
            border-left-color: var(--nutrition-red);
        }
        
        .sodium-chart-container {
            position: relative;
            height: 300px;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        /* Food item styling */
        .food-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.75rem;
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.3s;
        }
        
        .food-item:hover {
            background-color: var(--light-gray);
        }
        
        .food-item:last-child {
            border-bottom: none;
        }
        
        .food-name {
            font-weight: 500;
        }
        
        .food-sodium {
            font-weight: 600;
            color: var(--primary-color);
        }
        
        .delete-food-btn {
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            transition: color 0.3s;
        }
        
        .delete-food-btn:hover {
            color: var(--danger-color);
        }
        
        /* Common foods selector */
        .common-foods {
            max-height: 300px;
            overflow-y: auto;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 0.5rem;
        }
        
        .common-food-item {
            padding: 0.75rem;
            cursor: pointer;
            border-radius: 4px;
            transition: background-color 0.3s;
        }
        
        .common-food-item:hover {
            background-color: rgba(44, 125, 160, 0.1);
        }
        
        .common-food-item.selected {
            background-color: rgba(44, 125, 160, 0.2);
            font-weight: 600;
        }
        
        /* Conversion helper */
        .conversion-helper {
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 1rem;
            margin-top: 1rem;
        }
        
        .conversion-title {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-color);
        }
 
        
        /* Tab styles for different calculation methods */
        .nav-tabs .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            border: 1px solid transparent;
            border-bottom: none;
        }
        
        .nav-tabs .nav-link.active {
            color: var(--primary-color);
            background-color: white;
            border-color: var(--border-color) var(--border-color) white;
        }