:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --discount-color: #28a745;
            --savings-color: #20c997;
            --tax-color: #6f42c1;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --price-color: #e83e8c;
        }
          .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);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(44, 125, 160, 0.15);
        }
        .btn-success {
            background-color: var(--discount-color);
            border-color: var(--discount-color);
            font-weight: 600;
            border-radius: 6px;
        }
        .calc-mode-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1rem;
        }
        .calc-mode-tab {
            padding: 0.75rem 1.5rem;
            background-color: var(--light-gray);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
        }
        .calc-mode-tab:hover {
            background-color: rgba(44, 125, 160, 0.1);
        }
        .calc-mode-tab.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .input-card {
            background-color: var(--light-gray);
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid var(--border-color);
        }
        .input-card-title {
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }
        .input-card-title i {
            margin-right: 0.5rem;
        }
        .discount-types {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }
        .discount-type-btn {
            padding: 0.75rem 1.25rem;
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
            display: flex;
            align-items: center;
        }
        .discount-type-btn:hover {
            background-color: rgba(40, 167, 69, 0.1);
            border-color: var(--discount-color);
        }
        .discount-type-btn.active {
            background-color: rgba(40, 167, 69, 0.15);
            border-color: var(--discount-color);
            color: var(--discount-color);
        }
        .discount-type-btn i {
            margin-right: 0.5rem;
        }
        .price-breakdown {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        .price-item {
            background-color: var(--light-gray);
            border-radius: 8px;
            padding: 1.5rem;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .price-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .price-item.original {
            border-top: 4px solid var(--primary-color);
        }
        .price-item.discount {
            border-top: 4px solid var(--discount-color);
        }
        .price-item.savings {
            border-top: 4px solid var(--savings-color);
        }
        .price-item.final {
            border-top: 4px solid var(--price-color);
        }
        .price-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        .price-value {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .price-value.original {
            color: var(--primary-color);
        }
        .price-value.discount {
            color: var(--discount-color);
        }
        .price-value.savings {
            color: var(--savings-color);
        }
        .price-value.final {
            color: var(--price-color);
        }
        .price-detail {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .comparison-table th, .comparison-table td {
            padding: 1rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .comparison-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) {
            background-color: rgba(44, 125, 160, 0.05);
        }
        .comparison-table .savings-cell {
            font-weight: 600;
            color: var(--savings-color);
        }
        .discount-stack {
            background-color: rgba(40, 167, 69, 0.05);
            border-left: 3px solid var(--discount-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .common-scenarios {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin: 1rem 0;
        }
        .scenario-btn {
            background-color: rgba(44, 125, 160, 0.1);
            border: 1px solid rgba(44, 125, 160, 0.2);
            border-radius: 4px;
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            min-width: 120px;
        }
        .scenario-btn:hover {
            background-color: rgba(44, 125, 160, 0.2);
            transform: translateY(-2px);
        }
        .scenario-label {
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .scenario-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .math-box {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--tax-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .social-icons {
            display: flex;
            gap: 0.75rem;
            margin-top: 1rem;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: rgba(44, 125, 160, 0.1);
            color: var(--primary-color);
            transition: all 0.3s;
        }
        .social-icon:hover {
            background-color: var(--primary-color);
            color: white;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .price-breakdown {
                grid-template-columns: 1fr;
            }
            .calc-mode-tabs {
                flex-direction: column;
            }
        }
        .toggle-switch {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }
        .toggle-label {
            margin-left: 0.5rem;
            font-weight: 500;
        }
        .form-check-input:checked {
            background-color: var(--discount-color);
            border-color: var(--discount-color);
        }
        .currency-input {
            position: relative;
        }
        .currency-input .percentage-display {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--discount-color);
        }