:root {
            --primary: #6c63ff;
            --secondary: #4d44db;
            --light: #f8f9fa;
            --dark: #343a40;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Poppins', sans-serif;
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            transition: background-color 0.5s ease;
        }

        /* Header Styles */
        header {
            background-color: white;
            box-shadow: var(--box-shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }

        .logo i {
            margin-right: 0.5rem;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 2rem;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .auth-buttons .btn {
            margin-left: 1rem;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #6c63ff 0%, #4d44db 100%);
            color:white;
            padding: 5rem 5%;
            text-align: center;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .hero p {
            font-size: 1.1rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .search-bar {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }

        .search-bar input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }

        .search-bar button {
            background-color: var(--dark);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-bar button:hover {
            background-color: #23272b;
        }

        /* Courses Section */
        .courses {
            padding: 5rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-title h2 {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 1rem;
        }

        .section-title p {
            color: #6c757d;
            max-width: 600px;
            margin: 0 auto;
        }

        .course-categories {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .category-btn {
            background-color: navajowhite;
            border: 1px solid #dee2e6;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition);
        }

        .category-btn.active, .category-btn:hover {
            background-color: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .course-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }

        .course-card {
            background-color: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
        }

        .course-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        .course-img {
            height: 180px;
            overflow: hidden;
        }

        .course-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .course-card:hover .course-img img {
            transform: scale(1.05);
        }

        .course-info {
            padding: 1.5rem;
        }

        .course-category {
            display: inline-block;
            background-color: #e9ecef;
            color: var(--dark);
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.8rem;
            margin-bottom: 0.5rem;
        }

        .course-title {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

        .course-instructor {
            color: #6c757d;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }

        .course-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 1rem;
        }

        .course-price {
            font-weight: 700;
            color: var(--primary);
        }

        .course-rating {
            display: flex;
            align-items: center;
        }

        .course-rating i {
            color: var(--warning);
            margin-right: 0.3rem;
        }

        /* Features Section */
        .features {
            background-color: white;
            padding: 5rem 5%;
        }

        .features-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            text-align: center;
            padding: 2rem;
        }

        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }

        .feature-card h3 {
            margin-bottom: 1rem;
        }

        /* Testimonials */
        .testimonials {
            padding: 5rem 5%;
            background-color: #f8f9fa;
        }

        .testimonial-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .testimonial-slider {
            cursor: pointer;
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            gap: 2rem;
            padding: 1rem 0;
            scrollbar-width: none; /* Firefox */
        }

        .testimonial-slider::-webkit-scrollbar {
            display: none; /* Chrome, Safari, Opera */
        }

        .testimonial-card {
            min-width: 350px;
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            scroll-snap-align: start;
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 1.5rem;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
        }

        .author-img {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 1rem;
        }

        .author-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .author-info h4 {
            margin-bottom: 0.2rem;
        }

        .author-info p {
            color: #6c757d;
            font-size: 0.9rem;
        }

        /* CTA Section */
        .cta {
            background: linear-gradient(135deg, #6c63ff 0%, #4d44db 100%);
            color: white;
            padding: 5rem 5%;
            text-align: center;
        }

        .cta-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .cta h2 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
        }

        .cta p {
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        /* Footer */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 5rem 5% 2rem;
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1rem;
            display: inline-block;
        }

        .footer-about p {
            opacity: 0.7;
            margin-bottom: 1.5rem;
        }

        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-links a {
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .social-links a:hover {
            background-color: var(--primary);
        }

        .footer-links h3 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .footer-links h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary);
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }

        .footer-newsletter p {
            opacity: 0.7;
            margin-bottom: 1.5rem;
        }

        .newsletter-form {
            display: flex;
        }

        .newsletter-form input {
            flex: 1;
            padding: 0.8rem;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
        }

        .newsletter-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }

        .newsletter-form button:hover {
            background-color: var(--secondary);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            opacity: 0.7;
            font-size: 0.9rem;
        }

        /* Button Styles */
        .btn {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            border-radius: var(--border-radius);
            font-weight: 500;
            text-align: center;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
        }

        .btn-primary:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
        }

        .btn-outline {
            background-color: transparent;
            color: white;
            border: 1px solid white;
        }

        .btn-outline:hover {
            background-color: white;
            color: var(--primary);
        }

        .btn-dark {
            background-color: var(--dark);
            color: ;
        }

        .btn-dark:hover {
            background-color: #23272b;
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 2000;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background-color: white;
            width: 90%;
            max-width: 500px;
            border-radius: var(--border-radius);
            padding: 2rem;
            position: relative;
            animation: modalFadeIn 0.3s ease;
        }

        @keyframes modalFadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .close-modal {
            position: absolute;
            top: 1rem;
            right: 1rem;
            font-size: 1.5rem;
            cursor: pointer;
            color: #6c757d;
            transition: var(--transition);
        }

        .close-modal:hover {
            color: var(--danger);
        }

        .modal h2 {
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        .form-group input {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #dee2e6;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
        }

        .modal-btn {
            width: 100%;
            padding: 1rem;
            font-size: 1rem;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 0.5rem;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            margin: 3px 0;
            transition: var(--transition);
        }

        /* Responsive Styles */
        @media (max-width: 768px) {
            /* Navigation */
            .navbar {
                padding: 1rem 3%;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: white;
                flex-direction: column;
                justify-content: flex-start;
                align-items: center;
                padding-top: 2rem;
                transition: left 0.3s ease;
                box-shadow: var(--box-shadow);
            }

            .nav-links.active {
                left: 0;
            }

            .nav-links li {
                margin: 1rem 0;
            }

            .auth-buttons {
                display: flex;
                gap: 1rem;
                padding: 1rem 0;
                border-bottom: 1px solid #dee2e6;
                margin-bottom: 1rem;
                order: -1;
            }

            /* Hero Section */
            .hero {
                padding: 3rem 3%;
            }

            .hero h1 {
                font-size: 1.8rem;
                line-height: 1.3;
            }

            .hero p {
                font-size: 1rem;
            }

            .search-bar {
                flex-direction: column;
                gap: 0.5rem;
            }

            .search-bar input {
                border-radius: var(--border-radius);
            }

            .search-bar button {
                border-radius: var(--border-radius);
                padding: 0.8rem;
            }

            /* Sections */
            .courses, .features, .testimonials {
                padding: 3rem 3%;
            }

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

            /* Course Categories */
            .course-categories {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 0.5rem;
                scrollbar-width: none;
            }

            .course-categories::-webkit-scrollbar {
                display: none;
            }

            .category-btn {
                white-space: nowrap;
                min-width: fit-content;
            }

            /* Course Grid */
            .course-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .course-card {
                margin: 0 auto;
                max-width: 400px;
            }

            /* Features */
            .features-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .feature-card {
                padding: 1.5rem;
            }

            .feature-icon {
                font-size: 2rem;
            }

            /* Testimonials */
            .testimonial-card {
                min-width: 280px;
                padding: 1.5rem;
            }

            /* CTA Section */
            .cta {
                padding: 3rem 3%;
            }

            .cta h2 {
                font-size: 1.5rem;
            }

            /* Footer */
            footer {
                padding: 3rem 3% 2rem;
            }

            .footer-container {
                grid-template-columns: 1fr;
                gap: 2rem;
                text-align: center;
            }

            .social-links {
                justify-content: center;
            }

            .newsletter-form {
                flex-direction: column;
                gap: 0.5rem;
            }

            .newsletter-form input {
                border-radius: var(--border-radius);
            }

            .newsletter-form button {
                border-radius: var(--border-radius);
                padding: 0.8rem;
            }

            /* Modal */
            .modal-content {
                width: 95%;
                margin: 1rem;
                padding: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            /* Extra small screens */
            .hero h1 {
                font-size: 1.5rem;
            }

            .section-title h2 {
                font-size: 1.3rem;
            }

            .course-card {
                max-width: 100%;
            }

            .testimonial-card {
                min-width: 250px;
            }

            .btn {
                padding: 0.7rem 1.2rem;
                font-size: 0.9rem;
            }
        }