:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --finance-color: #28a745;
            --call-color: #20c997;
            --put-color: #e83e8c;
            --volatility-color: #ffc107;
            --greeks-color: #6f42c1;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --educational-color: #6f42c1;
        } 
        .educational-warning {
            background-color: rgba(111, 66, 193, 0.1);
            border: 2px solid var(--educational-color);
            border-radius: 8px;
            padding: 1.25rem;
            margin-bottom: 2rem;
            position: relative;
        }
        .educational-warning-icon {
            color: var(--educational-color);
            font-size: 1.5rem;
            margin-right: 0.75rem;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(44, 125, 160, 0.15);
        }
        .finance-box {
            background-color: rgba(40, 167, 69, 0.05);
            border-left: 3px solid var(--finance-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .educational-box {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--educational-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .option-type-selector {
            display: flex;
            border-radius: 6px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
        }
        .option-type-btn {
            flex: 1;
            padding: 0.75rem;
            text-align: center;
            background-color: white;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
        }
        .option-type-btn.active {
            color: white;
        }
        .call-option.active {
            background-color: var(--call-color);
        }
        .put-option.active {
            background-color: var(--put-color);
        }
        .parameter-slider {
            margin: 1.5rem 0;
        }
        .slider-container {
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
        }
        .slider-value {
            min-width: 60px;
            text-align: right;
            font-weight: 600;
            margin-left: 1rem;
        }
        .slider-label {
            min-width: 150px;
        }
        .greeks-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .greek-card {
            background: white;
            border-radius: 6px;
            padding: 1rem;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .greek-value {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0.5rem 0;
        }
        .greek-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .delta-positive {
            color: var(--call-color);
        }
        .delta-negative {
            color: var(--put-color);
        }
        .vega-positive {
            color: var(--volatility-color);
        }
        .theta-negative {
            color: var(--danger-color);
        }
        .model-tabs {
            display: flex;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
        }
        .model-tab {
            padding: 0.75rem 1.5rem;
            background: none;
            border: none;
            border-bottom: 3px solid transparent;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.3s;
        }
        .model-tab.active {
            color: var(--primary-color);
            border-bottom-color: var(--primary-color);
        }
        .model-content {
            display: none;
        }
        .model-content.active {
            display: block;
        }
        .sensitivity-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .sensitivity-table th, .sensitivity-table td {
            padding: 0.75rem;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .sensitivity-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        .sensitivity-table td.positive {
            background-color: rgba(32, 201, 151, 0.1);
            color: var(--call-color);
        }
        .sensitivity-table td.negative {
            background-color: rgba(232, 62, 140, 0.1);
            color: var(--put-color);
        }
        .payoff-diagram {
            height: 300px;
            margin: 1.5rem 0;
            position: relative;
        }
        .break-even-point {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            right: 20px;
            background: white;
            padding: 0.75rem;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        .break-even-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .break-even-value {
            font-weight: 700;
            font-size: 1.1rem;
        }
        .example-presets {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .example-preset {
            padding: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s;
            background-color: white;
        }
        .example-preset:hover {
            border-color: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .example-name {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--primary-color);
        }
        .example-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .greeks-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .example-presets {
                grid-template-columns: 1fr;
            }
        }
        .tooltip-icon {
            display: inline-block;
            width: 18px;
            height: 18px;
            background-color: var(--light-gray);
            border-radius: 50%;
            text-align: center;
            line-height: 18px;
            font-size: 0.8rem;
            margin-left: 0.5rem;
            cursor: help;
            color: var(--text-muted);
        }
        .accuracy-note {
            background-color: rgba(255, 193, 7, 0.1);
            border: 1px solid rgba(255, 193, 7, 0.3);
            border-radius: 6px;
            padding: 1rem;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .validation-results {
            background-color: rgba(111, 66, 193, 0.05);
            border-radius: 6px;
            padding: 1.5rem;
            margin-top: 1.5rem;
            border: 1px solid rgba(111, 66, 193, 0.2);
        }
        .validation-title {
            font-weight: 600;
            color: var(--educational-color);
            margin-bottom: 1rem;
        }
        .test-result {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.5rem 0;
            border-bottom: 1px dashed rgba(111, 66, 193, 0.2);
        }
        .test-result:last-child {
            border-bottom: none;
        }
        .test-pass {
            color: var(--success-color);
        }
        .test-fail {
            color: var(--danger-color);
        }