.ds-course-container {
            --ds-primary: #3b8eed;
            --ds-primary-light: #eef2ff;
            --ds-primary-dark: #4f46e5;
            --ds-secondary: #8b5cf6;
            --ds-dark: #1e293b;
            --ds-light: #f8fafc;
            --ds-gray: #64748b;
            --ds-success: #06b6d4;
            --ds-border-radius: 8px;
            --ds-box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --ds-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #f9fafb 0%, #e2e8f0 100%);
            color: var(--ds-dark);
            line-height: 1.7;
            padding: 0px;
            min-height: auto;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-sizing: border-box;
        }

        .ds-course-container * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        .ds-course-section {
            width: 100%;
            max-width: auto;
            margin: auto;
            background: white;
            padding: 3rem;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .ds-course-header {
            text-align: center;
            margin-bottom: 2.5rem;
            position: relative;
            padding-bottom: 1.2rem;
        }

        .ds-course-section h2 {
            font-size: 32px;
            font-weight: 600;
            color: black;
            letter-spacing: -0.5px;
        }


        .ds-course-content {
            display: flex;
            gap: 30px;
        }

        .ds-toggle-container {
            flex: 1;
            min-width: 0;
        }

        .ds-course-sidebar {
            width: 350px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .ds-projects-card {
            background: var(--ds-primary-light);
            border-radius: var(--ds-border-radius);
            padding: 1.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            position: relative;
            overflow: hidden;
        }

        .ds-projects-card h3 {
            font-size: 21px;
            color: #3b8eed;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ds-projects-card h3 i {
            background: white;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 14px;
            color: #3b8eed;
        }

        .ds-project-item {
            background: white;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
            transition: var(--ds-transition);
        }

        .ds-project-item:hover {
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            transform: translateY(-2px);
        }

        .ds-project-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ds-dark);
            margin-bottom: 5px;
        }

        .ds-stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--ds-primary-light);
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ds-primary-dark);
        }

        .ds-stat-item i {
            font-size: 14px;
            color: var(--ds-primary);
        }

        .ds-course-action {
            background: #3b8eed;
            border: none;
            border-radius: 8px;
            padding: 0.8rem;
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            color: white;
            cursor: pointer;
            text-align: center;
            transition: var(--ds-transition);
            margin-top: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            width: 100%;
        }

        .ds-course-action:hover {
            background: linear-gradient(90deg, #4facfe, #00f2fe);
            color: white;
        }

        .ds-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: white;
            color: var(--ds-primary);
            margin-right: 6px;
            margin-bottom: 6px;
        }

        /* Toggle items styling */
        details.ds-toggle-item {
            margin-bottom: 1.2rem;
            border-radius: var(--ds-border-radius);
            overflow: hidden;
            transition: var(--ds-transition);
            background: white;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        }

        details.ds-toggle-item summary {
            width: 100%;
            padding: 1rem 2rem;
            background: white;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--ds-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--ds-transition);
            position: relative;
            overflow: hidden;
            list-style: none;
        }

        details.ds-toggle-item summary::-webkit-details-marker {
            display: none;
        }

        details.ds-toggle-item summary::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 4px;
            background: linear-gradient(to bottom, var(--ds-primary), var(--ds-secondary));
            opacity: 0;
            transition: var(--ds-transition);
        }

        details.ds-toggle-item summary:hover {
            background: var(--ds-primary-light);
            color: #3b8eed;
        }

        details.ds-toggle-item summary:hover::before {
            opacity: 1;
        }

        details.ds-toggle-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            transition: var(--ds-transition);
            color: var(--ds-gray);
            background: var(--ds-primary-light);
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            flex-shrink: 0;
            margin-left: 10px;
        }

        details.ds-toggle-item[open] summary::after {
            transform: rotate(180deg);
            color: #3b8eed;
            background: var(--ds-primary-light);
        }

        details.ds-toggle-item[open] summary {
            background: var(--ds-primary-light);
            color: #3b8eed;
        }

        details.ds-toggle-item[open] summary::before {
            opacity: 1;
        }

        .ds-toggle-content {
            background: linear-gradient(to right, var(--ds-primary-light) 0%, white 10%);
            padding: 1rem 2rem;
            font-size: 1rem;
            color: var(--ds-gray);
            line-height: 1;
        }

        .ds-toggle-content h3 {
            color: var(--ds-primary-dark);
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .ds-toggle-content p {
            margin-bottom: 1.2rem;
            font-size: 15px;
        }

        .ds-toggle-content ul {
            margin-left: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .ds-toggle-content li {
            margin-bottom: 0.5rem;
            position: relative;
        }

        .ds-toggle-content li::before {
            content: '';
            position: absolute;
            left: -1.2rem;
            top: 0.2rem;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #3b8eed;
        }

        /* Modal styling */
        .ds-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            z-index: 1000;
            align-items: center;
            justify-content: center;
        }

        .ds-modal-content {
            background: white;
            border-radius: var(--ds-border-radius);
            width: 90%;
            max-width: 400px;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: var(--ds-box-shadow);
            animation: ds-modalFadeIn 0.3s ease forwards;
        }

        @keyframes ds-modalFadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .ds-modal-header {
            padding: 1rem;
            border-bottom: 1px solid #eee;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .ds-modal-header h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: black;
            margin: 0;
        }

        .ds-close-modal {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: black;
            cursor: pointer;
            transition: var(--ds-transition);
        }

        .ds-close-modal:hover {
            color: red;
        }

        .ds-modal-body {
            padding: 1rem;
        }

        .ds-form-group {
            margin-bottom: 1.2rem;
        }

        .ds-form-group label {
            display: block;
            margin-bottom: 0.1rem;
            font-weight: 500;
            color:black;
        }

        .ds-form-control {
            width: 90%;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            border-radius: var(--ds-border-radius);
            font-family: 'Poppins', sans-serif;
            font-size: 0.95rem;
            transition: var(--ds-transition);
        }

        .ds-form-control:focus {
            outline: none;
            border-color: var(--ds-primary);
            box-shadow: 0 0 0 3px var(--ds-primary-light);
        }

        .ds-modal-footer {
            padding: 1rem 1.5rem;
            border-top: 1px solid #eee;
            display: flex;
            justify-content: flex-end;
        }

        .ds-btn-download {
            background: black;
            color: white !important;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: var(--ds-border-radius);
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--ds-transition);
        }

        .ds-btn-download:hover {
            background: orange;
        }

        /* Animation */
        @keyframes ds-fadeIn {
            from {
                opacity: 0;
                transform: translateY(15px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        details.ds-toggle-item {
            animation: ds-fadeIn 0.6s ease forwards;
        }

        details.ds-toggle-item:nth-child(1) {
            animation-delay: 0.2s;
        }

        details.ds-toggle-item:nth-child(2) {
            animation-delay: 0.35s;
        }

        details.ds-toggle-item:nth-child(3) {
            animation-delay: 0.5s;
        }

        details.ds-toggle-item:nth-child(4) {
            animation-delay: 0.65s;
        }

        details.ds-toggle-item:nth-child(5) {
            animation-delay: 0.8s;
        }

        details.ds-toggle-item:nth-child(6) {
            animation-delay: 0.95s;
        }

        .ds-projects-card {
            animation: ds-fadeIn 0.6s ease forwards;
            animation-delay: 0.3s;
        }

        /* Success message */
        .ds-success-message {
            display: none;
            background: #10b981;
            color: white;
            padding: 1rem;
            border-radius: var(--ds-border-radius);
            margin-top: 1rem;
            text-align: center;
            font-weight: 500;
            animation: ds-fadeIn 0.6s ease forwards;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .ds-course-section {
                padding: 2.5rem;
            }

            .ds-course-content {
                gap: 20px;
            }

            .ds-course-sidebar {
                width: 300px;
            }

            details.ds-toggle-item summary {
                padding: 1.3rem 1.8rem;
            }

            .ds-toggle-content {
                padding: 1.5rem 1.8rem;
            }
        }

        @media (max-width: 900px) {
            .ds-course-content {
                flex-direction: column;
            }

            .ds-course-sidebar {
                width: 100%;
            }

            .ds-toggle-container {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .ds-course-section {
                padding: 2rem;
            }

            .ds-course-section h2 {
                font-size: 1.8rem;
            }

            details.ds-toggle-item summary {
                padding: 1.2rem 1.5rem;
                font-size: 1.1rem;
            }

            .ds-toggle-content {
                padding: 1.2rem 1.5rem;
            }

            .ds-projects-card h3 {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 576px) {
            .ds-course-section {
                padding: 1.5rem;
            }

            .ds-course-header {
                margin-bottom: 1.5rem;
            }

            .ds-course-section h2 {
                font-size: 1.5rem;
            }

            details.ds-toggle-item summary {
                padding: 1rem 1.2rem;
                font-size: 1rem;
            }

            details.ds-toggle-item summary::after {
                width: 25px;
                height: 25px;
                font-size: 0.9rem;
            }

            .ds-toggle-content {
                padding: 1rem 1.2rem;
            }

            .ds-toggle-content h3 {
                font-size: 1.2rem;
            }

            .ds-toggle-content p,
            .ds-toggle-content li {
                font-size: 15px;
            }

            .ds-projects-card {
                padding: 1rem;
            }

            .ds-projects-card h3 {
                font-size: 1rem;
            }

            .ds-course-action {
                padding: 0.6rem;
                font-size: 0.9rem;
            }

            .ds-modal-content {
                width: 95%;
            }
            details.ds-toggle-item summary{
                font-size:14px;
            }
        }

        @media (max-width: 400px) {
            .ds-course-section {
                padding: 1rem;
            }

            details.ds-toggle-item summary {
                padding: 0.8rem 1rem;
            }

            .ds-toggle-content {
                padding: 0.8rem 1rem;
            }

            .ds-toggle-content h3 {
                font-size: 15px;
            }

            .ds-toggle-content p,
            .ds-toggle-content li {
                font-size:14px;
            }
        }