* {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', sans-serif;
            background-color: #0a0a0a;
            color: #e5e5e5;
            overflow-x: hidden;
        }

        .header-container {
            background: #000;
            border-radius: 9999px;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-item {
            position: relative;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
        }
        .nav-item:hover {
            transform: translateY(-2px);
            text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
        }
        .signin-btn {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }
        .signin-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: scale(1.05);
        }
        .download-btn {
            background: white;
            color: black;
            transition: all 0.3s ease;
        }
        .download-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
        }
        /* Metallic Gradient for "Master Coding" */
        .metallic-gradient {
            background: linear-gradient(to right, 
                #c9c9c9 0%, 
                #ffffff 25%, 
                #c9c9c9 50%, 
                #ffffff 75%, 
                #c9c9c9 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
            background-size: 200% auto;
            animation: shine 3s linear infinite;
        }
        @keyframes shine {
            to {
                background-position: 200% center;
            }
        }
        .glass-card {
            background: rgba(10, 10, 10, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .glass-card:hover {
            background: rgba(23, 23, 23, 0.8);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
        }
        .btn {
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn-primary {
            background-color: white;
            color: black;
        }
        .btn-primary:hover {
            background-color: #e5e5e5;
            box-shadow: 0 10px 15px -3px rgba(255, 255, 255, 0.1);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .nav-item {
            position: relative;
        }
        .nav-item:after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: white;
            transition: width 0.3s ease;
        }
        .nav-item:hover:after {
            width: 100%;
        }
        .tab-active {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: white;
        }
        .modal {
            animation: modalFadeIn 0.3s ease-out;
        }
        @keyframes modalFadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .loader {
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        .toggle {
            transition: all 0.3s ease;
        }
        .toggle-checked {
            background-color: white;
        }
        .toggle-dot {
            transition: all 0.3s ease;
        }
        .toggle-checked .toggle-dot {
            transform: translateX(24px);
            background-color: black;
        }
        .gradient-text {
            background-image: linear-gradient(to right, #8A2BE2, #4B0082, #0000FF, #00FF00, #FFFF00, #FFA500, #FF0000);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-gradient {
            background: radial-gradient(circle at 70% 30%, rgba(138, 43, 226, 0.1) 0%, rgba(0, 0, 0, 0) 50%);
        }
        .course-card:hover .course-icon {
            transform: scale(1.1);
        }
        .course-icon {
            transition: transform 0.3s ease;
        }
        .blob {
            filter: blur(60px);
            opacity: 0.1;
        }
        .progress-ring {
            transition: stroke-dashoffset 0.5s ease;
            transform: rotate(-90deg);
            transform-origin: 50% 50%;
        }
        .hover-scale {
            transition: transform 0.3s ease;
        }
        .hover-scale:hover {
            transform: scale(1.05);
        }
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .code-editor {
            background: #0a0a0a;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .editor-header {
            background: #171717;
            padding: 8px 12px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .editor-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 6px;
        }
        .dot-red {
            background: #FF5F56;
        }
        .dot-yellow {
            background: #FFBD2E;
        }
        .dot-green {
            background: #27C93F;
        }
        .editor-title {
            font-family: 'Fira Code', monospace;
            font-size: 12px;
            color: #858585;
            margin-left: 10px;
        }
        .editor-body {
            padding: 16px;
            font-family: 'Fira Code', monospace;
            font-size: 14px;
            line-height: 1.5;
            overflow-x: auto;
        }
        .code-line {
            display: flex;
        }
        .line-number {
            color: #858585;
            min-width: 40px;
            text-align: right;
            padding-right: 12px;
            user-select: none;
        }
        .code-content {
            flex-grow: 1;
        }
        .keyword {
            color: #569CD6;
        }
        .function {
            color: #DCDCAA;
        }
        .string {
            color: #CE9178;
        }
        .comment {
            color: #6A9955;
        }
        .variable {
            color: #9CDCFE;
        }
        .type {
            color: #4EC9B0;
        }
        .operator {
            color: #D4D4D4;
        }
        .bracket {
            color: #FFD700;
        }
        .active-line {
            background: rgba(97, 175, 239, 0.1);
        }
        .cursor {
            display: inline-block;
            width: 2px;
            height: 16px;
            background: #569CD6;
            animation: blink 1s step-end infinite;
        }
        @keyframes blink {
            from, to { opacity: 1; }
            50% { opacity: 0; }
        }
        /* Floating header styles */
        .floating-header {
            background: rgba(10, 10, 10, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s ease;
            transform: translateY(-100%);
        }
        .floating-header.visible {
            transform: translateY(0);
        }
        /* Vercel-inspired UI elements */
        .vercel-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            line-height: 1.25;
            background: white;
            color: black;
            border-radius: 5px;
            padding: 0.5rem 1rem;
            font-weight: 500;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
        }
        .hero-buttons .vercel-btn,
        .hero-buttons .btn-secondary {
            min-height: 3rem;
        }
        @media (min-width: 640px) {
            .hero-buttons .vercel-btn,
            .hero-buttons .btn-secondary {
                min-height: 3.5rem;
            }
        }
        .vercel-btn:hover {
            background: #e5e5e5;
            transform: translateY(-1px);
        }
        .vercel-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .vercel-card:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        /* Grid background pattern */
        .grid-pattern {
            background-image: 
                linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        /* Code snippet bubbles */
        .code-bubble {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 9999px;
            padding: 0.5rem 1rem;
            font-family: 'Fira Code', monospace;
            font-size: 0.875rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        }
        .code-bubble:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        /* Industry collaboration section */
        .collaboration-bg {
            background: radial-gradient(ellipse at center, 
                rgba(0, 0, 0, 1) 0%, 
                rgba(70, 0, 100, 0.2) 30%, 
                rgba(0, 100, 70, 0.2) 70%, 
                rgba(100, 0, 0, 0.2) 100%);
        }
        .logo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 2rem;
            place-items: center;
        }
        .logo-item {
            filter: grayscale(100%) brightness(0.8);
            transition: all 0.3s ease;
        }
        .logo-item:hover {
            filter: grayscale(0%) brightness(1);
        }
        /* Video showcase card */
        .video-card {
            border-radius: 16px;
            overflow: hidden;
            transform: perspective(1000px) rotateX(5deg) rotateY(0deg) rotateZ(0deg);
            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }
        .video-card:hover {
            transform: perspective(1000px) rotateX(0deg) rotateY(0deg) rotateZ(0deg);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
        }
        /* Prompt dialog */
        .prompt-dialog {
            background: linear-gradient(135deg, rgba(30, 30, 30, 0.8) 0%, rgba(50, 50, 50, 0.6) 100%);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .prompt-line {
            position: relative;
            padding-left: 1.5rem;
        }
        .prompt-line:before {
            content: '$';
            position: absolute;
            left: 0;
            color: #4EC9B0;
        }
        /* AI slider controls */
        .slider-control {
            -webkit-appearance: none;
            width: 100%;
            height: 4px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 2px;
            outline: none;
        }
        .slider-control::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: white;
            cursor: pointer;
        }
        /* Gradient background elements */
        .gradient-bg {
            background: linear-gradient(135deg, #8A2BE2 0%, #4B0082 25%, #0000FF 50%, #00FF00 75%, #FFFF00 100%);
        }
        .gradient-border {
            border-image: linear-gradient(to right, #8A2BE2, #4B0082, #0000FF, #00FF00, #FFFF00, #FFA500, #FF0000) 1;
        }
         #videoPlayer {
            transition: opacity 0.5s ease;
        }
        
        #videoPlayer.loading {
            opacity: 0.5;
        }
        
        #videoLoading {
            transition: opacity 0.3s ease;
        }
        
        #videoLoading.hidden {
            opacity: 0;
            pointer-events: none;
        }
        
        #audioToggle {
            transition: transform 0.2s ease, background-color 0.2s ease;
        }
        
        #audioToggle:hover {
            transform: scale(1.1);
        }
        /* Dashboard cards */
        .dashboard-card {
            background: rgba(10, 10, 10, 0.8);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .deployment-card {
            background: rgba(20, 20, 20, 0.9);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .score-badge {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .avatar-group {
            display: flex;
        }
        .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            margin-left: -8px;
            border: 2px solid #0a0a0a;
            background: #404040;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 12px;
            font-weight: bold;
        }
        .avatar:first-child {
            margin-left: 0;
        }

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

        .animate-fadeIn {
            animation: fadeIn 0.5s ease-out;
        }

        /* Mobile responsiveness additions */
        @media (max-width: 768px) {
            body {
                overflow-x: hidden;
            }
            
            * {
                max-width: 100%;
                box-sizing: border-box;
            }
            
            .header-container {
                padding: 0.75rem;
                border-radius: 12px;
            }
            
            .hero-gradient {
                background: radial-gradient(circle at 50% 30%, rgba(138, 43, 226, 0.1) 0%, rgba(0, 0, 0, 0) 50%);
            }
            
            h1 {
                font-size: 2.5rem;
                line-height: 1.2;
            }
            
            .code-bubble {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            
            .video-card {
                transform: none;
            }
            
            .prompt-dialog {
                padding: 1.5rem;
            }
            
            .logo-grid {
                grid-template-columns: repeat(2, 1fr);
                overflow-x: hidden;
            }
            
            .logo-item img {
                height: 2.5rem;
                max-width: 100%;
            }
            
            /* Prevent horizontal overflow */
            .max-w-7xl {
                max-width: 100%;
                padding-left: 1rem;
                padding-right: 1rem;
            }
            
            .grid-pattern {
                overflow-x: hidden;
            }
            
            .course-card {
                margin-bottom: 1.5rem;
            }
            
            .dashboard-card {
                padding: 1.5rem;
            }
            
            .editor-body {
                padding: 0.75rem;
                font-size: 0.875rem;
            }
            
            .line-number {
                min-width: 30px;
            }
            
            .pricing-card {
                padding: 1.5rem;
            }
            
            .testimonial-card {
                padding: 1.5rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            
            .nav-item:after {
                display: none;
            }
            
            .signin-btn, .download-btn {
                padding: 0.5rem 1rem;
                font-size: 0.875rem;
            }
            
            /* Mobile menu specific styles */
            #mobileMenuButton {
                position: fixed;
                top: 1.5rem;
                right: 1rem;
                z-index: 55;
            }
            
            #mobileMenuOverlay {
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
                z-index: 60;
            }
            
            #mobileMenu {
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
                z-index: 61;
                max-height: 100vh;
                overflow-y: auto;
            }
            
            /* Ensure mobile menu appears above header */
            header {
                z-index: 50;
            }
        }

        @media (max-width: 640px) {
            body {
                overflow-x: hidden;
            }
            
            * {
                max-width: 100%;
                box-sizing: border-box;
            }
            
            .header-container {
                flex-direction: column;
                align-items: center;
                padding: 1rem;
                max-width: 100%;
            }
            
            .nav-menu {
                flex-direction: column;
                margin-top: 1rem;
            }
            
            .nav-item {
                margin: 0.5rem 0;
            }
            
            .action-buttons {
                margin-top: 1rem;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                gap: 1rem;
            }
            
            .code-bubbles-container {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .course-tabs {
                flex-wrap: wrap;
            }
            
            .course-tab {
                flex: 1 0 auto;
                margin-bottom: 0.5rem;
            }
            
            .video-section {
                flex-direction: column;
            }
            
            .video-card, .prompt-dialog {
                width: 100%;
            }
            
            .pricing-cards {
                grid-template-columns: 1fr;
            }
            
            .testimonial-cards {
                grid-template-columns: 1fr;
            }
            
            .footer-links {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
    


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

        .animate-fadeIn {
            animation: fadeIn 0.5s ease-out;
        }