:root {
            --primary: #00C853;
            --primary-dark: #009624;
            --primary-light: rgba(0, 200, 83, 0.1);
            --dark: #263238;
            --light: #f8f9fa;
            --gray: #607D8B;
            --white: #ffffff;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(0, 200, 83, 0.15);
            --transition: all 0.3s ease;
            --border-radius: 12px;
            --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            --text-dark: #1a1a1a;
            --text-medium: #4a4a4a;
            --text-light: #777;
            --bg-light: #f9f9f9;
            --bg-dark: #1a1a1a;
            --border-color: #e0e0e0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
            --border-radius-sm: 8px;
            --border-radius-md: 12px;
            --border-radius-lg: 16px;
            --premium-gradient: linear-gradient(135deg, #8A2BE2 0%, #4B0082 100%);
            --gold: #FFD700;
            --silver: #C0C0C0;
            --secondary: #2962FF;
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        /* Preloader */
        #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: 3px solid #f3f3f3;
            border-top: 3px solid var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin-bottom: 20px;
        }

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

        /* Enhanced Navbar */
        .navbar {
            background: var(--white);
            box-shadow: var(--shadow);
            padding: 12px 5%;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .navbar.scrolled {
            padding: 8px 5%;
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-badge {
            color: var(--primary-dark);
            font-weight: bold;
            font-size: 0.9em;
            font-family: 'Arial Black', sans-serif;
            background: radial-gradient(circle at 30% 30%, var(--primary-light), transparent 30%),
                        radial-gradient(circle at 70% 70%, var(--secondary), transparent 40%),
                        linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 0.15em 0.35em;
            border-radius: 0.3em;
            display: inline-block;
            box-shadow: 1px 1px 2px rgba(0,0,0,0.2), inset 0 0 2px rgba(255,255,255,0.2);
            line-height: 1;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border: 1px solid rgba(255,255,255,0.4);
        }

        .nav-links {
            display: flex;
            gap: 25px;
            align-items: center;
            list-style: none;
        }

        .nav-links a {
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            padding: 8px 0;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 0;
            background: var(--primary);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        /* Search Bar Styles */
        .search-container {
            position: relative;
            margin-right: 10px;
        }

        .search-input {
            width: 250px;
            padding: 10px 40px 10px 15px;
            border: 2px solid var(--primary-light);
            border-radius: 30px;
            font-size: 0.9rem;
            transition: var(--transition);
            background: var(--light);
        }

        .search-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.2);
            width: 300px;
        }

        .search-icon {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
            background: none;
            border: none;
            padding: 5px;
        }

        .search-icon:hover {
            color: var(--primary);
        }

        .action-buttons {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .ai-button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }

        .ai-button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 200, 83, 0.3);
        }

        .support-btn {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 8px 15px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }

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

        .mobile-menu-btn {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--dark);
            padding: 5px;
            z-index: 1001;
        }

        /* Mobile Search Overlay */
        .mobile-search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1001;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

        .mobile-search-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-search-container {
            width: 90%;
            max-width: 500px;
            position: relative;
        }

        .mobile-search-input {
            width: 100%;
            padding: 15px 50px 15px 20px;
            border: none;
            border-radius: 30px;
            font-size: 1.1rem;
        }

        .mobile-search-close {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--dark);
            font-size: 1.5rem;
            cursor: pointer;
            background: none;
            border: none;
        }

        /* Mobile Search Button */
        .mobile-search-btn {
            display: none;
            background: none;
            border: none;
            color: var(--dark);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 8px;
        }

        /* Mobile Actions Menu */
        .mobile-actions {
            display: none;
            flex-direction: column;
            gap: 10px;
            padding: 20px;
            background: white;
            border-top: 1px solid var(--light-gray);
        }

        .mobile-actions.active {
            display: flex;
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-hover);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
            border: none;
        }

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

        .back-to-top:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 200, 83, 0.3);
        }

        /* Main Content */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 5%;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, rgba(0, 200, 83, 0.05) 0%, rgba(0, 150, 36, 0.05) 100%);
            text-align: center;
        }

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

        .hero-badge {
            display: inline-block;
            padding: 8px 20px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero-description {
            font-size: 1.1rem;
            color: var(--gray);
            margin-bottom: 40px;
        }

        .hero-cta {
            display: flex;
            gap: 15px;
            justify-content: center;
        }

        .btn {
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .btn-primary {
            background: var(--primary);
            color: white;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 200, 83, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

        /* Courses Header */
        .courses-header {
            text-align: center;
            padding: 80px 0 50px;
        }

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .section-subtitle {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        /* Search Results Info */
        .search-results-info {
            text-align: center;
            margin-bottom: 30px;
            color: var(--gray);
            font-size: 1.1rem;
        }

        .no-results {
            text-align: center;
            padding: 50px;
            color: var(--gray);
            grid-column: 1 / -1;
        }

        /* Enhanced Course Cards */
        .courses-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
            padding: 20px 0 50px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .course-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: auto;
            display: flex;
            flex-direction: column;
        }

        .course-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .course-icon-container {
            background: var(--primary-light);
            padding: 30px 0;
            text-align: center;
        }

        .course-icon {
            font-size: 3rem;
        }

        .course-content {
            padding: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .course-name {
            font-weight: 600;
            color: var(--dark);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .course-category {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 20px;
        }

        .course-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            color: var(--primary);
            font-weight: 500;
            transition: var(--transition);
        }

        .course-link i {
            margin-left: 8px;
            transition: var(--transition);
        }

        .course-link:hover {
            color: var(--primary-dark);
        }

        .course-link:hover i {
            transform: translateX(4px);
        }

        /* Color classes for icons */
        .ruby-icon { color: #CC342D; }
        .kotlin-icon { color: #7F52FF; }
        .ai-icon { color: #8A2BE2; }
        .bootstrap-icon { color: #7952B3; }
        .c-icon { color: #00599C; }
        .node-icon { color: #68A063; }
        .django-icon { color: #092E20; }
        .datascience-icon { color: #03a9f4; }
        .stats-icon { color: #9c27b0; }
        .excel-icon { color: #217346; }
        .intro-icon { color: #ff9800; }
        .html-icon { color: #E44D26; }
        .css-icon { color: #2965F1; }
        .js-icon { color: #F0DB4F; }
        .php-icon { color: #777BB4; }
        .cpp-icon { color: #00599C; }
        .python-icon { color: #3776AB; }
        .java-icon { color: #5382A1; }
        .ts-icon { color: #3178C6; }
        .csharp-icon { color: #239120; }
        .forex-icon { color: #16C784; }

        /* ===== Premium Subscription Section ===== */
        .premium-subscription {
            background: var(--premium-gradient);
            color: white;
            text-align: center;
            padding: 5rem 2rem;
            margin: 5rem 0;
            border-radius: var(--border-radius-lg);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .premium-subscription::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .premium-subscription::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 250px;
            height: 250px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .premium-subscription h2 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }

        .premium-subscription p {
            max-width: 700px;
            margin: 0 auto 2.5rem;
            font-size: 1.2rem;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .premium-features {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 3rem;
            position: relative;
            z-index: 1;
        }

        .premium-feature {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 1.5rem;
            border-radius: var(--border-radius-md);
            width: 250px;
            transition: var(--transition);
        }

        .premium-feature:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.15);
        }

        .premium-feature i {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--gold);
        }

        .premium-feature h3 {
            color: white;
            margin-bottom: 0.5rem;
            font-size: 1.2rem;
        }

        .premium-feature p {
            font-size: 0.95rem;
            margin: 0;
        }

        .premium-cta-btn {
            background: white;
            color: #8A2BE2;
            border: none;
            padding: 1.2rem 3rem;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-5px); }
        }

        .premium-cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
            animation: none;
        }

        .pricing-options {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 3rem;
            position: relative;
            z-index: 1;
        }

        .pricing-option {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: var(--border-radius-lg);
            width: 280px;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .pricing-option:hover {
            transform: translateY(-5px);
            border-color: var(--gold);
        }

        .pricing-option h3 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .price {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--gold);
        }

        .price span {
            font-size: 1rem;
            font-weight: 400;
        }

        .pricing-features {
            list-style: none;
            margin-bottom: 2rem;
            text-align: left;
        }

        .pricing-features li {
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .pricing-features li i {
            color: var(--gold);
        }

        .pricing-btn {
            background: var(--gold);
            color: #000;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }

        .pricing-btn:hover {
            background: white;
            transform: translateY(-2px);
        }

        /* Enhanced Footer */
        .footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 80px 5% 30px;
            position: relative;
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            position: relative;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 20px;
            display: inline-flex;
            align-items: center;
        }

        .footer-logo i {
            margin-right: 10px;
            transition: var(--transition);
        }

        .footer-logo:hover i {
            transform: rotate(-15deg);
        }

        .footer-about p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            line-height: 1.6;
        }

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

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

        .footer-social a:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-links h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: var(--white);
            position: relative;
            display: inline-block;
        }

        .footer-links h3::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--primary);
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }

        .footer-newsletter p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .newsletter-form {
            display: flex;
            margin-bottom: 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 30px;
            overflow: hidden;
        }

        .newsletter-input {
            flex: 1;
            padding: 12px 20px;
            border: none;
            background: transparent;
            color: var(--white);
            font-family: 'Inter', sans-serif;
        }

        .newsletter-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .newsletter-button {
            background-color: var(--primary);
            color: var(--white);
            border: none;
            padding: 0 20px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .newsletter-button:hover {
            background-color: var(--primary-dark);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }

        /* ===== FIXED MOBILE NAVIGATION ===== */
        
        /* Mobile Navigation Styles */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                left: -100%;
                background: white;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                gap: 0;
                box-shadow: 5px 0 25px rgba(0, 0, 0, 0.1);
                padding: 80px 0 30px;
                transition: var(--transition);
                z-index: 999;
                overflow-y: auto;
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links a {
                padding: 15px 25px;
                display: block;
                text-align: left;
                border-bottom: 1px solid rgba(0, 0, 0, 0.05);
                width: 100%;
                font-size: 1.1rem;
            }
            
            .nav-links a:last-child {
                border-bottom: none;
            }
            
            .nav-links a:hover {
                background: var(--primary-light);
                color: var(--primary);
            }
            
            .nav-links a::after {
                display: none;
            }
            
            .nav-actions {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .mobile-search-btn {
                display: block;
            }
            
            /* Mobile Menu Overlay */
            .mobile-menu-overlay {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.5);
                z-index: 998;
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
            }
            
            .mobile-menu-overlay.active {
                opacity: 1;
                visibility: visible;
            }
            
            /* Mobile Actions Menu */
            .mobile-actions {
                display: flex;
                flex-direction: column;
                gap: 10px;
                padding: 20px;
                background: white;
                position: fixed;
                bottom: 0;
                left: 0;
                width: 100%;
                box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.1);
                z-index: 1000;
                transform: translateY(100%);
                transition: var(--transition);
            }
            
            .mobile-actions.active {
                transform: translateY(0);
            }
            
            .mobile-actions .ai-button,
            .mobile-actions .support-btn {
                width: 100%;
                justify-content: center;
                padding: 12px;
                font-size: 1rem;
            }
            
            .hero-title {
                font-size: 2.2rem;
            }
            
            .hero-cta {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .courses-container {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .premium-subscription h2 {
                font-size: 2rem;
            }
            
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 45px;
                height: 45px;
            }
            
            .pricing-options {
                flex-direction: column;
                align-items: center;
            }
            
            .pricing-option {
                width: 100%;
                max-width: 350px;
            }
        }

        /* Additional Mobile Styles */
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.5rem;
            }
            
            .section-title {
                font-size: 2.2rem;
            }
            
            .search-container {
                display: none;
            }
            
            .mobile-search-btn {
                display: block;
            }
            
            .premium-features {
                flex-direction: column;
                align-items: center;
            }
            
            .premium-feature {
                width: 100%;
                max-width: 350px;
            }
        }

        @media (max-width: 576px) {
            .hero-title {
                font-size: 1.8rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .courses-container {
                grid-template-columns: 1fr;
            }
            
            .footer-container {
                grid-template-columns: 1fr;
            }
            
            .search-input {
                width: 200px;
            }
            
            .search-input:focus {
                width: 200px;
            }
            
            .premium-subscription {
                padding: 3rem 1rem;
            }
            
            .premium-subscription h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 1200px) {
            .search-input:focus {
                width: 250px;
            }
            
            .pricing-options {
                flex-wrap: wrap;
            }
        }
                /* Floating AI Chat Button */
.ai-chat-button {
    position: fixed;
    bottom: 100px; /* Changed from 30px to 100px to position above Back to Top */
    right: 30px;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(0, 200, 83, 0.3);
    z-index: 1001; /* Increased to 1001 to be above Back to Top */
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: none;
    animation: float 3s ease-in-out infinite;
}

.ai-chat-button:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 200, 83, 0.5);
    animation: none;
}

.ai-chat-button:active {
    transform: scale(0.95);
}

.ai-chat-button i {
    font-size: 1.8rem;
    color: white;
    transition: transform 0.3s ease;
}

.ai-chat-button:hover i {
    transform: scale(1.1);
}

/* Pulse animation for attention */
@keyframes pulse-glow {
    0% {
        box-shadow: 0 8px 25px rgba(0, 200, 83, 0.3);
    }
    50% {
        box-shadow: 0 8px 30px rgba(0, 200, 83, 0.6);
    }
    100% {
        box-shadow: 0 8px 25px rgba(0, 200, 83, 0.3);
    }
}

.ai-chat-button.pulse {
    animation: pulse-glow 2s ease-in-out infinite, float 3s ease-in-out infinite;
}

/* Tooltip */
.ai-chat-button::after {
    content: 'Chat with AI';
    position: absolute;
    bottom: -40px;
    right: 50%;
    transform: translateX(50%);
    background: var(--dark);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1002;
}

.ai-chat-button::before {
    content: '';
    position: absolute;
    bottom: -10px;
    right: 50%;
    transform: translateX(50%);
    border: 5px solid transparent;
    border-bottom-color: var(--dark);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1002;
}

.ai-chat-button:hover::after,
.ai-chat-button:hover::before {
    opacity: 1;
    visibility: visible;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .ai-chat-button {
        width: 60px;
        height: 60px;
        bottom: 90px; /* Adjusted for mobile */
        right: 20px;
    }
    
    .ai-chat-button i {
        font-size: 1.5rem;
    }
    
    .ai-chat-button::after {
        font-size: 0.7rem;
        padding: 6px 10px;
        bottom: -35px;
    }
}

@media (max-width: 480px) {
    .ai-chat-button {
        width: 55px;
        height: 55px;
        bottom: 85px; /* Adjusted for mobile */
        right: 15px;
    }
    
    .ai-chat-button i {
        font-size: 1.3rem;
    }
}

/* Back to Top Button - Ensure it stays below AI button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000; /* Keep this lower than AI button's 1001 */
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}