* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
            min-height: 100vh;
        }
        
        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        
        header {
            text-align: center;
            margin-bottom: 10px;
        }
        
        header h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        header p {
            color: #7f8c8d;
            font-size: 1.1rem;
        }
        
        /* Disclaimer Section */
        .disclaimer {
            background-color: #fff8e1;
            border-left: 4px solid #ffc107;
            padding: 15px;
            margin: 0 auto 20px;
            border-radius: 8px;
            max-width: 800px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        
        .disclaimer h3 {
            color: #ff9800;
            font-size: 1.1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .disclaimer-icon {
            font-size: 1.2rem;
        }
        
        .disclaimer p {
            color: #5d4037;
            font-size: 0.9rem;
            line-height: 1.5;
            margin: 0;
        }
        
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
            align-items: start;
        }
        
        @media (max-width: 768px) {
            .content-wrapper {
                grid-template-columns: 1fr;
                gap: 25px;
                margin-bottom: 25px;
            }
            
            .main-container {
                padding: 15px;
                gap: 25px;
            }
            
            body {
                padding: 15px;
            }
            
            .disclaimer {
                padding: 12px;
                margin: 0 auto 15px;
            }
        }
        
        .card {
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            width: 100%;
            display: flex;
            flex-direction: column;
        }
        
        @media (max-width: 768px) {
            .card {
                padding: 20px;
                margin-bottom: 0;
            }
        }
        
        .card h2 {
            color: #2c3e50;
            font-size: 1.5rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
            flex-shrink: 0;
        }
        
        /* Previous Result Section */
        .previous-result-section {
            margin-bottom: 25px;
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
        }
        
        .previous-result-section h3 {
            color: #2c3e50;
            font-size: 1.2rem;
            margin-bottom: 15px;
        }
        
        .previous-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 10px;
        }
        
        .previous-table th {
            text-align: left;
            padding: 12px 10px;
            background-color: #f8f9fa;
            color: #2c3e50;
            font-weight: 600;
            border-bottom: 1px solid #eaeaea;
            font-size: 0.9rem;
        }
        
        .previous-table td {
            padding: 10px;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .previous-input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        
        .previous-input:focus {
            border-color: #4b6cb7;
            outline: none;
        }
        
        .previous-info {
            font-size: 0.85rem;
            color: #7f8c8d;
            margin-top: 8px;
            font-style: italic;
        }
        
        /* Current GPA Section */
        .current-gpa-section {
            margin-bottom: 25px;
            border-bottom: 1px solid #eee;
            padding-bottom: 20px;
        }
        
        .current-gpa-section h3 {
            color: #2c3e50;
            font-size: 1.2rem;
            margin-bottom: 15px;
        }
        
        .current-gpa-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 10px;
        }
        
        .current-gpa-table th {
            text-align: left;
            padding: 12px 10px;
            background-color: #f8f9fa;
            color: #2c3e50;
            font-weight: 600;
            border-bottom: 1px solid #eaeaea;
            font-size: 0.9rem;
        }
        
        .current-gpa-table td {
            padding: 10px;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .current-gpa-value {
            background-color: #f9f9f9;
            color: #666;
            font-weight: 500;
            text-align: center;
            font-size: 1.1rem;
        }
        
        .current-gpa-fixed-value {
            background-color: #f9f9f9;
            color: #666;
            font-weight: 500;
            text-align: center;
        }
        
        .current-info {
            font-size: 0.85rem;
            color: #7f8c8d;
            margin-top: 8px;
            font-style: italic;
        }
        
        /* Courses Card */
        .courses-content {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        /* Courses Table */
        .courses-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        
        .courses-table th {
            text-align: left;
            padding: 12px 10px;
            background-color: #f8f9fa;
            color: #2c3e50;
            font-weight: 600;
            border-bottom: 1px solid #eaeaea;
        }
        
        .courses-table td {
            padding: 12px 10px;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .courses-table tr:last-child td {
            border-bottom: none;
        }
        
        /* Updated Column Widths */
        .courses-table th:nth-child(1), /* Course Name column */
        .courses-table td:nth-child(1) {
            width: 35%;
        }
        
        .courses-table th:nth-child(2), /* Credit column */
        .courses-table td:nth-child(2) {
            width: 20%;
        }
        
        .courses-table th:nth-child(3), /* Grade column */
        .courses-table td:nth-child(3) {
            width: 35%;
        }
        
        .courses-table th:nth-child(4), /* Action column */
        .courses-table td:nth-child(4) {
            width: 10%;
        }
        
        @media (max-width: 768px) {
            .courses-table th,
            .courses-table td {
                padding: 10px 8px;
                font-size: 0.9rem;
            }
            
            /* Mobile responsive widths */
            .courses-table th:nth-child(1),
            .courses-table td:nth-child(1) {
                width: 35%;
            }
            
            .courses-table th:nth-child(2),
            .courses-table td:nth-child(2) {
                width: 20%;
            }
            
            .courses-table th:nth-child(3),
            .courses-table td:nth-child(3) {
                width: 35%;
            }
            
            .courses-table th:nth-child(4),
            .courses-table td:nth-child(4) {
                width: 10%;
            }
            
            .previous-table th,
            .previous-table td {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            
            .current-gpa-table th,
            .current-gpa-table td {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
        }
        
        .course-input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        
        .course-input:focus {
            border-color: #4b6cb7;
            outline: none;
        }
        
        .course-input::placeholder {
            color: #aaa;
        }
        
        /* Grade Select Styling */
        .grade-select {
            width: 100%;
            padding: 12px 10px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
            background-color: white;
            height: 44px;
        }
        
        .grade-select:focus {
            border-color: #4b6cb7;
            outline: none;
        }
        
        /* Fixed first column in previous table */
        .previous-table th:first-child {
            width: 120px;
        }
        
        .previous-fixed-value {
            background-color: #f9f9f9;
            color: #666;
            font-weight: 500;
            text-align: center;
        }
        
        /* Action column styles */
        .action-cell {
            text-align: center;
            width: 50px;
        }
        
        .delete-btn {
            background-color: #ffebee;
            border: none;
            color: #f44336;
            cursor: pointer;
            font-size: 1rem;
            padding: 8px 10px;
            border-radius: 6px;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            box-shadow: 0 2px 4px rgba(244, 67, 54, 0.1);
        }
        
        .delete-btn:hover {
            background-color: #ffcdd2;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(244, 67, 54, 0.2);
        }
        
        .delete-btn:active {
            transform: translateY(0);
            box-shadow: 0 1px 2px rgba(244, 67, 54, 0.1);
        }
        
        .delete-icon {
            font-weight: bold;
            font-size: 1.1rem;
        }
        
        /* Button Styles */
        .btn-group {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
            flex-shrink: 0;
        }
        
        @media (max-width: 768px) {
            .btn-group {
                gap: 10px;
                margin-bottom: 15px;
            }
        }
        
        .btn {
            padding: 12px 20px;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex: 1;
        }
        
        @media (max-width: 768px) {
            .btn {
                padding: 10px 15px;
                font-size: 0.95rem;
            }
        }
        
        .btn-add {
            background-color: #4b6cb7;
            color: white;
        }
        
        .btn-add:hover {
            background-color: #3a5ca9;
            transform: translateY(-2px);
        }
        
        .btn-reset {
            background-color: #e74c3c;
            color: white;
        }
        
        .btn-reset:hover {
            background-color: #c0392b;
            transform: translateY(-2px);
        }
        
        /* Checkbox */
        .checkbox-container {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 10px;
            flex-shrink: 0;
        }
        
        .checkbox-container input {
            width: 18px;
            height: 18px;
        }
        
        .checkbox-container label {
            color: #7f8c8d;
            cursor: pointer;
            font-size: 0.95rem;
        }
        
        /* Results Card */
        .results-card {
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            min-height: 450px;
        }
        
        .results-top-section {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
        }
        
        .cgpa-display {
            text-align: center;
            margin: 20px 0;
            flex-shrink: 0;
        }
        
        .cgpa-value {
            font-size: 3.5rem;
            font-weight: 700;
            color: #2c3e50;
            margin: 10px 0;
        }
        
        @media (max-width: 768px) {
            .cgpa-value {
                font-size: 3rem;
            }
        }
        
        .cgpa-label {
            font-size: 1.1rem;
            color: #7f8c8d;
            margin-bottom: 5px;
        }
        
        .out-of {
            font-size: 1rem;
            color: #95a5a6;
            margin-bottom: 25px;
        }
        
        .percentage {
            font-size: 1.8rem;
            font-weight: 700;
            color: #27ae60;
            margin: 15px 0;
        }
        
        @media (max-width: 768px) {
            .percentage {
                font-size: 1.6rem;
            }
        }
        
        .btn-calculate {
            background-color: #27ae60;
            color: white;
            width: 100%;
            padding: 15px;
            margin-top: 10px;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        
        .btn-calculate:hover {
            background-color: #219653;
            transform: translateY(-2px);
        }
        
        /* Export Button */
        .btn-export {
            background-color: #9b59b6;
            color: white;
            width: 100%;
            padding: 12px;
            margin-top: 15px;
            font-size: 1rem;
            flex-shrink: 0;
        }
        
        .btn-export:hover {
            background-color: #8e44ad;
            transform: translateY(-2px);
        }
        
        /* Export Options Menu */
        .export-menu {
            display: none;
            position: absolute;
            background-color: white;
            min-width: 200px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.1);
            border-radius: 8px;
            z-index: 100;
            padding: 10px 0;
            margin-top: 10px;
        }
        
        .export-menu.show {
            display: block;
        }
        
        .export-option {
            display: block;
            width: 100%;
            padding: 12px 20px;
            text-align: left;
            border: none;
            background: none;
            color: #333;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background-color 0.2s;
        }
        
        .export-option:hover {
            background-color: #f5f5f5;
        }
        
        .export-option i {
            margin-right: 10px;
            color: #9b59b6;
        }
        
        /* Export Section */
        .export-section {
            position: relative;
            display: inline-block;
            width: 100%;
        }
        
        /* Stats Row */
        .stats-row {
            display: flex;
            justify-content: space-between;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 2px solid #f0f0f0;
            flex-shrink: 0;
        }
        
        @media (max-width: 768px) {
            .stats-row {
                margin-top: 15px;
                padding-top: 15px;
            }
        }
        
        .stat-item {
            text-align: center;
            flex: 1;
            padding: 0 5px;
        }
        
        .stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: #4b6cb7;
        }
        
        @media (max-width: 768px) {
            .stat-value {
                font-size: 1.5rem;
            }
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: #7f8c8d;
            margin-top: 5px;
        }
        
        /* Footer */
        footer {
            text-align: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid #eaeaea;
            color: #7f8c8d;
            font-size: 0.9rem;
            width: 100%;
        }
        
        footer p {
            margin: 5px 0;
        }
        
        /* Input error state */
        .error {
            border-color: #e74c3c !important;
            background-color: rgba(231, 76, 60, 0.05);
        }
        
        /* Icons */
        .icon {
            font-size: 1rem;
        }
        
        /* Mobile specific fixes */
        @media (max-width: 768px) {
            .content-wrapper {
                display: flex;
                flex-direction: column;
            }
            
            .results-card {
                min-height: 400px;
            }
        }
        
        /* Tooltip for info */
        .info-icon {
            display: inline-block;
            width: 16px;
            height: 16px;
            background-color: #3498db;
            color: white;
            border-radius: 50%;
            text-align: center;
            line-height: 16px;
            font-size: 12px;
            margin-left: 5px;
            cursor: help;
        }
        
        /* Modal Styles - Updated for Mobile Responsiveness */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            padding: 15px;
            box-sizing: border-box;
        }
        
        .modal.show {
            display: flex;
        }
        
        .modal-content {
            background-color: white;
            width: 100%;
            max-width: 500px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            overflow: hidden;
            max-height: 90vh;
            overflow-y: auto;
        }
        
        @media (max-width: 768px) {
            .modal-content {
                border-radius: 10px;
                max-height: 85vh;
            }
            
            .modal {
                padding: 10px;
            }
        }
        
        .modal-header {
            background-color: #4b6cb7;
            color: white;
            padding: 20px;
            text-align: center;
            position: sticky;
            top: 0;
            z-index: 10;
        }
        
        @media (max-width: 768px) {
            .modal-header {
                padding: 15px;
            }
            
            .modal-header h2 {
                font-size: 1.3rem;
            }
            
            .modal-header p {
                font-size: 0.9rem;
            }
        }
        
        .modal-header h2 {
            font-size: 1.5rem;
            margin: 0 0 5px 0;
        }
        
        .modal-body {
            padding: 25px;
        }
        
        @media (max-width: 768px) {
            .modal-body {
                padding: 20px 15px;
            }
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        @media (max-width: 768px) {
            .form-group {
                margin-bottom: 15px;
            }
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 600;
            font-size: 0.95rem;
        }
        
        @media (max-width: 768px) {
            .form-group label {
                font-size: 0.9rem;
                margin-bottom: 6px;
            }
        }
        
        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
            box-sizing: border-box;
        }
        
        @media (max-width: 768px) {
            .form-control {
                padding: 10px;
                font-size: 0.95rem;
            }
        }
        
        .form-control:focus {
            border-color: #4b6cb7;
            outline: none;
        }
        
        .form-control::placeholder {
            color: #aaa;
        }
        
        .form-row {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }
        
        @media (max-width: 768px) {
            .form-row {
                flex-direction: column;
                gap: 15px;
                margin-bottom: 15px;
            }
            
            .form-row .form-group {
                margin-bottom: 0;
            }
        }
        
        .modal-footer {
            display: flex;
            justify-content: flex-end;
            gap: 15px;
            padding: 20px 25px;
            background-color: #f8f9fa;
            border-top: 1px solid #eee;
            position: sticky;
            bottom: 0;
            z-index: 10;
        }
        
        @media (max-width: 768px) {
            .modal-footer {
                padding: 15px 20px;
                gap: 10px;
                flex-wrap: wrap;
            }
        }
        
        .modal-btn {
            padding: 12px 25px;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            min-width: 100px;
        }
        
        @media (max-width: 768px) {
            .modal-btn {
                padding: 10px 20px;
                font-size: 0.95rem;
                min-width: 90px;
                flex: 1;
            }
        }
        
        .modal-btn-cancel {
            background-color: #e0e0e0;
            color: #333;
        }
        
        .modal-btn-cancel:hover {
            background-color: #d0d0d0;
        }
        
        .modal-btn-download {
            background-color: #27ae60;
            color: white;
        }
        
        .modal-btn-download:hover {
            background-color: #219653;
        }
        
        .required {
            color: #e74c3c;
        }
        
        /* Download Options - Updated for Mobile */
        .download-options {
            margin-top: 20px;
            border-top: 1px solid #eee;
            padding-top: 20px;
        }
        
        @media (max-width: 768px) {
            .download-options {
                margin-top: 15px;
                padding-top: 15px;
            }
        }
        
        .download-options h3 {
            font-size: 1.1rem;
            color: #2c3e50;
            margin-bottom: 15px;
        }
        
        @media (max-width: 768px) {
            .download-options h3 {
                font-size: 1rem;
                margin-bottom: 10px;
                text-align: center;
            }
        }
        
        .download-buttons {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        
        @media (max-width: 768px) {
            .download-buttons {
                gap: 8px;
            }
        }
        
        .download-btn {
            flex: 1;
            min-width: 120px;
            padding: 12px;
            border: none;
            border-radius: 6px;
            background-color: #4b6cb7;
            color: white;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            box-sizing: border-box;
        }
        
        @media (max-width: 768px) {
            .download-btn {
                min-width: calc(50% - 8px);
                padding: 10px;
                font-size: 0.9rem;
                gap: 5px;
            }
            
            .download-btn span.icon {
                font-size: 0.9rem;
            }
        }
        
        @media (max-width: 480px) {
            .download-btn {
                min-width: 100%;
            }
        }
        
        .download-btn:hover {
            background-color: #3a5ca9;
            transform: translateY(-2px);
        }
        
        .download-btn.active {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }
        
        .download-btn.pdf {
            background-color: #e74c3c;
        }
        
        .download-btn.pdf:hover {
            background-color: #c0392b;
        }
        
        .download-btn.csv {
            background-color: #27ae60;
        }
        
        .download-btn.csv:hover {
            background-color: #219653;
        }
        
        .download-btn.text {
            background-color: #9b59b6;
        }
        
        .download-btn.text:hover {
            background-color: #8e44ad;
        }
        
        .download-btn.print {
            background-color: #34495e;
        }
        
        .download-btn.print:hover {
            background-color: #2c3e50;
        }
        
        /* Mobile form improvements */
        @media (max-width: 768px) {
            input, select, textarea {
                font-size: 16px !important; /* Prevents zoom on iOS */
            }
            
            .form-control {
                -webkit-appearance: none;
                -moz-appearance: none;
                appearance: none;
            }
        }
        
        /* Modal scroll behavior for mobile */
        @media (max-width: 768px) {
            .modal-content {
                -webkit-overflow-scrolling: touch;
            }
        }
        
        /* Close button for mobile */
        .modal-close-btn {
            display: none;
            position: absolute;
            top: 10px;
            right: 10px;
            background: rgba(0, 0, 0, 0.3);
            color: white;
            border: none;
            border-radius: 50%;
            width: 30px;
            height: 30px;
            font-size: 18px;
            cursor: pointer;
            z-index: 11;
            align-items: center;
            justify-content: center;
        }
        
        @media (max-width: 768px) {
            .modal-close-btn {
                display: flex;
            }
        }