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

        body {
            font-family: 'Poppins', sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
            min-height: 100vh;
        }

        #preloader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: white;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s ease;
        }

        #preloader.fade-out {
            opacity: 0;
            pointer-events: none;
        }

        .loader {
            width: 50px;
            height: 50px;
            border: 5px solid #f3f3f3;
            border-top: 5px solid #4CAF50;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin-bottom: 15px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 5%;
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: #4CAF50;
            text-decoration: none;
        }

        .logo i {
            margin-right: 10px;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: #4CAF50;
        }

        .explore-btn {
            background: linear-gradient(to right, #4CAF50, #2E7D32);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .explore-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .explore-btn i {
            margin-right: 5px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }

        .courses-header {
            text-align: center;
            margin-bottom: 40px;
            color: white;
        }

        .courses-header h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .courses-header p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
            opacity: 0.9;
        }

        .filter-section {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 30px;
        }

        .filter-btn {
            background: rgba(255, 255, 255, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: white;
            padding: 8px 20px;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s;
            backdrop-filter: blur(10px);
        }

        .filter-btn.active, .filter-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .course-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .course-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }

        .course-image {
            height: 180px;
            position: relative;
            overflow: hidden;
        }

        .course-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .course-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: #FF5722;
            color: white;
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .course-price {
            position: absolute;
            top: 10px;
            right: 10px;
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 5px 10px;
            border-radius: 20px;
            font-weight: 600;
        }

        .course-content {
            padding: 20px;
        }

        .course-icon {
            font-size: 1.5rem;
            margin-bottom: 10px;
            display: inline-block;
        }

        .html-icon { color: #e34f26; }
        .js-icon { color: #f7df1e; }
        .css-icon { color: #1572b6; }
        .ts-icon { color: #3178c6; }
        .java-icon { color: #007396; }
        .python-icon { color: #3776ab; }
        .cpp-icon { color: #00599c; }
        .csharp-icon { color: #239120; }
        .php-icon { color: #777bb4; }
        .forex-icon { color: #00a859; }

        .course-category {
            display: block;
            color: #4CAF50;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .course-title {
            font-size: 1.2rem;
            margin-bottom: 15px;
            color: #333;
            text-decoration: none;
            display: block;
            transition: color 0.3s;
        }

        .course-title:hover {
            color: #4CAF50;
        }

        .course-meta {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
            font-size: 0.9rem;
            color: #666;
        }

        .course-rating {
            color: #ffc107;
        }

        .course-difficulty {
            display: inline-block;
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .beginner { background: #e8f5e9; color: #2e7d32; }
        .intermediate { background: #e3f2fd; color: #1565c0; }
        .advanced { background: #ffebee; color: #c62828; }

        .subscription-cta {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            color: white;
            margin-top: 50px;
        }

        .subscription-cta h2 {
            font-size: 2rem;
            margin-bottom: 15px;
        }

        .subscription-cta p {
            max-width: 700px;
            margin: 0 auto 25px;
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .cta-btn {
            background: white;
            color: #4CAF50;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        .footer {
            background: #2E7D32;
            color: white;
            padding: 50px 0 20px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
            margin-bottom: 15px;
            display: inline-block;
        }

        .footer-about p {
            margin-bottom: 20px;
            opacity: 0.8;
        }

        .footer-social {
            display: flex;
            gap: 15px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            color: white;
            text-decoration: none;
            transition: background 0.3s;
        }

        .footer-social a:hover {
            background: #4CAF50;
        }

        .footer-links h3 {
            margin-bottom: 20px;
            font-size: 1.2rem;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-newsletter p {
            margin-bottom: 15px;
            opacity: 0.8;
        }

        .newsletter-form {
            display: flex;
        }

        .newsletter-input {
            flex: 1;
            padding: 10px 15px;
            border: none;
            border-radius: 30px 0 0 30px;
            outline: none;
        }

        .newsletter-button {
            background: #4CAF50;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            transition: background 0.3s;
        }

        .newsletter-button:hover {
            background: #2E7D32;
        }

        .footer-bottom {
            text-align: center;
            margin-top: 50px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            opacity: 0.7;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: #4CAF50;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 99;
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: #2E7D32;
            transform: translateY(-5px);
        }

        /* NEW STYLES FOR COMING SOON OVERLAY */
        /* These styles only add the overlay effect without changing existing colors */
        .content-wrapper {
            position: relative;
        }
        
        .coming-soon-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            backdrop-filter: blur(8px);
            background-color: rgba(0, 0, 0, 0.4);
            z-index: 1000;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .coming-soon-card {
            background: white;
            border-radius: 15px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            max-width: 500px;
            width: 100%;
            animation: cardFadeIn 0.8s ease-out;
        }
        
        @keyframes cardFadeIn {
            from {
                opacity: 0;
                transform: translateY(30px) scale(0.95);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        
        .coming-soon-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            display: block;
        }
        
        .coming-soon-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: #4CAF50;
            animation: breathing 3s ease-in-out infinite;
        }
        
        @keyframes breathing {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.03);
            }
        }
        
        .coming-soon-subtitle {
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.6;
        }
        
        .notify-btn {
            background: linear-gradient(to right, #4CAF50, #2E7D32);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .notify-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        /* Responsive Styles */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                gap: 15px;
            }
            
            .nav-links {
                gap: 15px;
            }
            
            .courses-header h1 {
                font-size: 2rem;
            }
            
            .coming-soon-title {
                font-size: 2rem;
            }
            
            .coming-soon-card {
                padding: 30px 20px;
            }
        }