: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;
            --kinetics-color: #2c7da0;
        }
         
        .page-header {
            background: linear-gradient(135deg, rgba(169, 214, 229, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 0.2);
            position: relative;
            overflow: hidden;    color: var(--text-color);
        }
         
        
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        
        .breadcrumb-item.active {
            color: var(--text-color);
        }
         
        
        .kinetics-summary {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .kinetics-item {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .kinetics-item h4 {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        
        .kinetics-item .value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--kinetics-color);
        }
        
        .kinetics-item .detail {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }
        
        /* Chart Container */
        .chart-container {
            position: relative;
            height: 400px;
            width: 100%;
            margin: 2rem 0;
        }
        
        /* 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(--kinetics-color);
            color: white;
        }
        
        .mode-form {
            display: none;
        }

        .mode-form.active {
            display: block;
        }
        
        /* Data table styling */
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1rem 0;
        }
        
        .data-table th, .data-table td {
            padding: 0.75rem;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        
        .data-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .data-table input {
            width: 100%;
            border: none;
            text-align: center;
            background: transparent;
        }
        
        .data-table input:focus {
            outline: none;
            background-color: rgba(156, 39, 176, 0.05);
        }
        
        /* Fractional order specific styles */
        .fractional-input-group {
            display: flex;
            align-items: center;
        }
        
        .fractional-input-group input {
            width: 80px;
            margin: 0 5px;
        }
        
        /* Content Sections */
        .section-title {
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--kinetics-color);
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        
        .info-box {
            background-color: rgba(156, 39, 176, 0.05);
            border-left: 3px solid var(--kinetics-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        
        .formula-box {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 1rem;
            margin: 1rem 0;
            font-family: 'Courier New', monospace; 
        }
        
        .equation {
            font-size: 1.2rem;
            margin: 0.5rem 0;
        }
        
        /* Toast notifications */
        .toast-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1050;
        }
        
        .toast {
            display: flex;
            align-items: center;
            background-color: white;
            border-radius: 6px;
            padding: 1rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            margin-bottom: 0.5rem;
            max-width: 350px;
            transform: translateX(400px);
            transition: transform 0.3s ease;
        }
        
        .toast.show {
            transform: translateX(0);
        }
        
        /* Generating indicator */
        .generating-indicator {
            display: none;
            padding: 1rem;
            text-align: center;
            background-color: var(--light-gray);
            border-radius: 6px;
            margin: 1rem 0;
        }