:root {
            --primary: #6C4DF6;
            --primary-dark: #5A3EE8;
            --secondary: #a2bdff;
            --dark: #1A1A2E;
            --light: #F8F9FA;
            --gray: #6C757D;
            --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
        }

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

        /* Desktop Header - Hidden on mobile */
        .desktop-header {
            display: none;
        }

        /* Mobile Header */
        .mobile-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(26, 26, 46, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        }

        .mobile-logo {
            font-family: 'Montserrat', sans-serif;
            font-weight: 800;
            font-size: 22px;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
        }

        .mobile-logo span {
            color: var(--secondary);
        }

        .mobile-logo i {
            margin-right: 8px;
            font-size: 26px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            cursor: pointer;
            padding: 5px;
            z-index: 1001;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: white;
            margin: 3px 0;
            transition: all 0.3s ease;
            border-radius: 3px;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }

        /* Mobile Navigation Menu */
        .mobile-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--gradient);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transform: translateX(-100%);
            transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            z-index: 999;
        }

        .mobile-nav.active {
            transform: translateX(0);
        }

        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 30px;
            list-style: none;
        }

        .mobile-nav-links li {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s ease;
        }

        .mobile-nav.active .mobile-nav-links li {
            opacity: 1;
            transform: translateY(0);
        }

        .mobile-nav.active .mobile-nav-links li:nth-child(1) { transition-delay: 0.1s; }
        .mobile-nav.active .mobile-nav-links li:nth-child(2) { transition-delay: 0.2s; }
        .mobile-nav.active .mobile-nav-links li:nth-child(3) { transition-delay: 0.3s; }
        .mobile-nav.active .mobile-nav-links li:nth-child(4) { transition-delay: 0.4s; }
        .mobile-nav.active .mobile-nav-links li:nth-child(5) { transition-delay: 0.5s; }

        .mobile-nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 24px;
            padding: 15px 30px;
            border-radius: 50px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .mobile-nav-links a::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.1);
            transition: left 0.3s ease;
        }

        .mobile-nav-links a:hover::before {
            left: 0;
        }

        .mobile-nav-links a:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: scale(1.05);
        }

        /* Social Links in Mobile Menu */
        .mobile-social {
            margin-top: 50px;
            display: flex;
            gap: 20px;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s ease;
        }

        .mobile-nav.active .mobile-social {
            opacity: 1;
            transform: translateY(0);
            transition-delay: 0.6s;
        }

        .mobile-social a {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            transition: all 0.3s ease;
        }

        .mobile-social a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: scale(1.1);
        }

        /* Demo Content */
        .demo-content {
            padding: 100px 20px 50px;
            text-align: center;
        }

        .demo-content h1 {
            font-family: 'Montserrat', sans-serif;
            font-size: 36px;
            margin-bottom: 20px;
        }

        .demo-content p {
            font-size: 18px;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Responsive Design */
        @media (min-width: 769px) {
            .mobile-header {
                display: none;
            }
            
            .desktop-header {
                display: block;
                padding: 30px 0;
                position: absolute;
                width: 100%;
                z-index: 100;
            }
            
            .desktop-header .container {
                max-width: 1200px;
                margin: 0 auto;
                padding: 0 20px;
            }
            
            .desktop-header .navbar {
                display: flex;
                justify-content: space-between;
                align-items: center;
            }
            
            .desktop-header .logo {
                font-family: 'Montserrat', sans-serif;
                font-weight: 800;
                font-size: 28px;
                color: white;
                text-decoration: none;
                display: flex;
                align-items: center;
            }
            
            .desktop-header .logo span {
                color: var(--secondary);
            }
            
            .desktop-header .logo i {
                margin-right: 10px;
                font-size: 32px;
            }
            
            .nav-links {
                display: flex;
                gap: 30px;
            }
            
            .nav-links a {
                color: white;
                text-decoration: none;
                font-weight: 500;
                font-size: 16px;
                transition: all 0.3s ease;
                position: relative;
            }
            
            .nav-links a:hover {
                color: var(--secondary);
            }
            
            .nav-links a::after {
                content: '';
                position: absolute;
                width: 0;
                height: 2px;
                background: var(--secondary);
                bottom: -5px;
                left: 0;
                transition: width 0.3s ease;
            }
            
            .nav-links a:hover::after {
                width: 100%;
            }
        }

        /* Overlay for mobile menu */
        .mobile-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 998;
        }

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