:root {
            --bg-primary: #1A1E29;
            --bg-secondary: #0f1118;
            --bg-card: #1A1E29;
            --text-primary: #E8EAED;
            --text-secondary: #9ab8aa;
            --accent-primary: #63f1b6;
            --accent-secondary: #5cf6a9;
            --accent-tertiary: #06d474;
            --border-color: rgba(99, 241, 163, 0.2);
            --shadow: rgba(99, 241, 163, 0.1);
        }

        [data-theme="light"] {
            --bg-primary: #F8F9FA;
            --bg-secondary: #FFFFFF;
            --bg-card: #FFFFFF;
            --text-primary: #1A1D29;
            --text-secondary: #1A1E29;
            --accent-primary: #63f1b6;
            --accent-secondary: #5cf6a9;
            --accent-tertiary: #06d474;
            --border-color: rgba(99, 241, 163, 0.2);
            --shadow: rgba(99, 241, 163, 0.1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background 0.3s ease, color 0.3s ease;
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background: var(--bg-secondary);
            backdrop-filter: blur(20px);
            z-index: 1000;
            transition: all 0.3s ease;
            border-bottom: 1px solid var(--border-color);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-img {
            width: 120px;
            height: auto;
            object-fit: contain;
            transition: transform 0.3s ease, opacity 0.3s ease;
            
        }

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

        /* Logo images for theme switching */
        .logo-dark {
            display: block;
        }

        .logo-light {
            display: none;
        }

        [data-theme="light"] .logo-dark {
            display: none;
        }

        [data-theme="light"] .logo-light {
            display: block;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
            align-items: center;
        }

        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 8px;
        }

        .nav-link:hover {
            color: var(--accent-primary);
            background: rgba(1, 195, 142, 0.15);
        }

        /* Theme Toggle */
        .theme-toggle {
            width: 48px;
            height: 48px;
            border: none;
            background: rgba(1, 195, 142, 0.15);
            border-radius: 12px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            transition: all 0.3s ease;
            margin-left: 16px;
        }

        .theme-toggle:hover {
            background: rgba(1, 195, 142, 0.25);
            transform: rotate(15deg);
        }

        /* Dropdown */
        .dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--bg-card);
            min-width: 180px;
            border-radius: 12px;
            box-shadow: 0 8px 32px var(--shadow);
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            margin-top: 8px;
        }

        .dropdown:hover .dropdown-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-content a {
            color: var(--text-secondary);
            padding: 12px 16px;
            text-decoration: none;
            display: block;
            transition: all 0.3s ease;
            font-size: 14px;
        }

        .dropdown-content a:hover {
            background: rgba(1, 195, 142, 0.15);
            color: var(--accent-primary);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }

        .bar {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            transition: 0.3s;
            border-radius: 2px;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
            padding: 120px 24px 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
            opacity: 0.15;
            top: -200px;
            right: -200px;
            animation: float 20s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--accent-tertiary) 0%, transparent 70%);
            opacity: 0.1;
            bottom: -150px;
            left: -150px;
            animation: float 25s ease-in-out infinite reverse;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) scale(1); }
            50% { transform: translate(30px, -30px) scale(1.1); }
        }

        .hero-content {
            text-align: center;
            z-index: 2;
            max-width: 720px;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 700;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #01C38E, #00E5A0, #FFFFFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .hero p {
            font-size: clamp(1.1rem, 2vw, 1.25rem);
            margin-bottom: 40px;
            color: var(--text-secondary);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 32px;
            background: linear-gradient(135deg, #01C38E, #00E5A0);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(1, 195, 142, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(1, 195, 142, 0.4);
        }

        /* Services Section */
        .services {
            padding: 100px 24px;
            background: var(--bg-secondary);
        }

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

        .section-title {
            text-align: center;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 64px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--bg-card);
            border-radius: 16px;
            padding: 32px;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px var(--shadow);
        }

        .service-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(1, 195, 142, 0.15), rgba(0, 229, 160, 0.1));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--text-primary);
            font-weight: 600;
        }

        .service-card p {
            color: var(--text-secondary);
            line-height: 1.6;
            font-size: 15px;
        }

        /* Footer */
        .footer {
            background: var(--bg-primary);
            padding: 64px 24px 32px;
            border-top: 1px solid var(--border-color);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 48px;
            margin-bottom: 40px;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-section h3 {
            color: var(--text-primary);
            margin-bottom: 20px;
            font-size: 1.2rem;
            font-weight: 600;
        }

        .footer-section p, .footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            line-height: 2;
            font-size: 14px;
            display: block;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--accent-primary);
        }

        .social-links {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .social-links a {
            width: 40px;
            height: 40px;
            background: rgba(1, 195, 142, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            background: var(--accent-primary);
            transform: translateY(-2px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                left: -100%;
                top: 72px;
                flex-direction: column;
                background: var(--bg-secondary);
                width: 100%;
                padding: 24px;
                transition: 0.3s;
                border-top: 1px solid var(--border-color);
                height: calc(100vh - 72px);
                overflow-y: auto;
                gap: 4px;
            }

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

            .mobile-menu {
                display: flex;
            }

            .mobile-menu.active .bar:nth-child(2) {
                opacity: 0;
            }

            .mobile-menu.active .bar:nth-child(1) {
                transform: translateY(6px) rotate(45deg);
            }

            .mobile-menu.active .bar:nth-child(3) {
                transform: translateY(-6px) rotate(-45deg);
            }

            .logo-img {
                width: 100px;
            }

            .logo-dark,
            .logo-light {
                width: 100px;
            }

            .theme-toggle {
                margin-left: 8px;
                width: 40px;
                height: 40px;
            }

            .dropdown-content {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                background: transparent;
                box-shadow: none;
                border: none;
                margin-top: 8px;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

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

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 10px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--accent-primary);
            border-radius: 5px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent-secondary);
        }