/* --- DESIGN TOKENS (CSS CUSTOM PROPERTIES) --- */
        :root {
            /* Colors */
            --color-background-primary: #0D1117;
            --color-background-secondary: #161B22;
            --color-text-primary: #C9D1D9;
            --color-text-secondary: #8B949E;
            --color-text-inverse: #0D1117;
            --color-accent-primary: #58A6FF;
            --color-accent-primary-hover: #79C0FF;
            --color-accent-secondary: #3FB950;
            --color-border-default: #30363D;
            --color-border-interactive: #58A6FF;
            --color-status-success: #3FB950;

            /* Typography */
            --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-display-sm: 2.5rem;
            --font-size-display-md: 3.5rem;

            /* Spacing */
            --spacing-xs: 0.25rem;
            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-xxl: 2.5rem;
            --spacing-xxxl: 3rem;
            --spacing-section: 6rem;

            /* Borders & Radius */
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-pill: 9999px;
            --border-width-default: 1px;

            /* Shadows & Animations */
            --shadow-interactive: 0 4px 14px 0 rgba(0, 0, 0, 0.25);
            --shadow-glow-popular: 0 0 25px rgba(88, 166, 255, 0.3);
            --duration-base: 300ms;
            --easing-base: cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* --- GLOBAL STYLES & RESETS --- */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family-sans);
            background-color: var(--color-background-primary);
            color: var(--color-text-primary);
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* --- UTILITY CLASSES --- */
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: var(--spacing-lg);
            padding-right: var(--spacing-lg);
        }

        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
            overflow: hidden;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xxxl);
        }

        .section-header h2 {
            font-size: var(--font-size-display-sm);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .section-header p {
            font-size: var(--font-size-lg);
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius-pill);
            text-decoration: none;
            font-weight: 600;
            font-size: var(--font-size-base);
            transition: all var(--duration-base) var(--easing-base);
            border: var(--border-width-default) solid transparent;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--color-accent-primary);
            color: var(--color-text-inverse);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-primary-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-interactive);
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--color-text-primary);
            border-color: var(--color-border-default);
        }

        .btn-secondary:hover {
            background-color: var(--color-background-secondary);
            border-color: var(--color-text-primary);
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s var(--easing-base), transform 0.6s var(--easing-base);
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* --- HEADER & NAVIGATION --- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: var(--spacing-md) 0;
            background-color: rgba(13, 17, 23, 0.8);
            backdrop-filter: blur(10px);
            border-bottom: var(--border-width-default) solid var(--color-border-default);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem; /* Adjust space between icon and text */
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-text-primary);
            text-decoration: none;
            line-height: 1; /* Add this line for perfect vertical alignment */
        }
        
        .logo svg {
            width: 36px; /* Adjust size of the icon */
            height: 36px;
            color: var(--color-accent-primary); /* Sets the icon color to your accent blue */
        }

        .logo span {
            color: var(--color-accent-primary);
        }

        .nav-menu {
            list-style: none;
            display: flex;
            gap: var(--spacing-xl);
        }

        .nav-link {
            text-decoration: none;
            color: var(--color-text-secondary);
            font-weight: 500;
            position: relative;
            transition: color var(--duration-base);
        }

        .nav-link:hover {
            color: var(--color-text-primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 50%;
            background-color: var(--color-accent-primary);
            transition: all var(--duration-base) var(--easing-base);
            transform: translateX(-50%);
        }

        .nav-link:hover::after {
            width: 100%;
        }
        
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 24px;
            height: 24px;
            position: relative;
            z-index: 1001;
        }

        .mobile-nav-toggle .line {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-text-primary);
            position: absolute;
            left: 0;
            transition: transform var(--duration-base) var(--easing-base), opacity var(--duration-base);
        }

        .mobile-nav-toggle .line1 { top: 4px; }
        .mobile-nav-toggle .line2 { top: 11px; }
        .mobile-nav-toggle .line3 { top: 18px; }

        .mobile-nav-toggle.active .line1 {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-nav-toggle.active .line2 {
            opacity: 0;
        }
        .mobile-nav-toggle.active .line3 {
            transform: translateY(-7px) rotate(-45deg);
        }
        
        /* --- HERO SECTION --- */
        .hero {
            min-height: 100vh; /* Set minimum height to 100% of the viewport height */
            display: flex; /* Enable flexbox for centering */
            align-items: center; /* Vertically center the content */
            justify-content: center; /* Horizontally center the content */
            text-align: center;
            padding-top: 5rem; /* Add padding to account for the fixed header */
            padding-bottom: 2rem; /* Add some bottom padding for spacing */
            background: radial-gradient(circle at 50% 30%, rgba(88, 166, 255, 0.1), transparent 70%);
        }

        .hero-content h1 {
            font-size: var(--font-size-display-md);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-md);
        }

        .hero-content p {
            font-size: var(--font-size-lg);
            color: var(--color-text-secondary);
            max-width: 650px;
            margin: 0 auto var(--spacing-xl) auto;
        }
        
        .hero-cta-buttons {
            display: flex;
            justify-content: center;
            gap: var(--spacing-md);
        }
        
        /* --- FEATURES SECTION --- */
        #features {
            background-color: var(--color-background-secondary);
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-xl);
        }
        
        .feature-card {
            background-color: var(--color-background-primary);
            border: var(--border-width-default) solid var(--color-border-default);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
        }

        .feature-icon {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: rgba(88, 166, 255, 0.1);
            margin-bottom: var(--spacing-lg);
        }

        .feature-icon svg {
            width: 30px;
            height: 30px;
            color: var(--color-accent-primary);
        }

        .feature-card h3 {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-sm);
        }

        .feature-card p {
            color: var(--color-text-secondary);
        }

        /* --- HOW IT WORKS SECTION --- */
        .how-it-works-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-xl);
            text-align: center;
        }

        .step-card {
            position: relative;
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--color-background-secondary);
            border: 2px solid var(--color-border-default);
            color: var(--color-accent-primary);
            font-size: 1.5rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-lg);
        }

        .step-card h3 {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-sm);
        }
        
        .step-card p {
            color: var(--color-text-secondary);
        }

        /* --- DEVICE COMPATIBILITY SECTION --- */
        #compatibility {
             background-color: var(--color-background-secondary);
        }
        .compatibility-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: var(--spacing-xl);
        }
        
        .device-card {
            background-color: var(--color-background-primary);
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-md);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            transition: transform var(--duration-base), box-shadow var(--duration-base), border-color var(--duration-base);
        }

        .device-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            border-color: var(--color-border-interactive);
        }
        
        .device-icon {
            height: 60px;
            margin-bottom: var(--spacing-md);
        }
        
        .device-icon svg {
            height: 100%;
            width: auto;
            fill: var(--color-text-secondary);
            transition: fill var(--duration-base);
        }

        .device-card:hover .device-icon svg {
            fill: var(--color-text-primary);
        }
        
        .device-name {
            font-weight: 600;
        }

        /* --- PRICING SECTION --- */
        .pricing-plans-container {
            display: flex;
            justify-content: center;
            align-items: stretch;
            flex-wrap: wrap;
            gap: 2rem;
        }

        .pricing-plan {
            background: var(--color-background-secondary);
            border: 1px solid var(--color-border-default);
            border-radius: 12px;
            padding: 2.5rem;
            flex-basis: 280px;
            flex-grow: 1;
            max-width: 320px;
            display: flex;
            flex-direction: column;
            text-align: left;
            transition: transform var(--duration-base) ease, box-shadow var(--duration-base) ease, border-color var(--duration-base) ease;
            position: relative;
            overflow: hidden;
        }

        .pricing-plan:hover {
            transform: translateY(-10px);
        }
        
        .pricing-plan.popular {
            border-color: var(--color-accent-primary);
            box-shadow: var(--shadow-glow-popular);
        }
        
        .badge {
            position: absolute;
            top: 1.5rem;
            right: -45px;
            background: var(--color-accent-primary);
            color: var(--color-text-inverse);
            padding: 0.5rem 3rem;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            transform: rotate(45deg);
        }
        .badge.best-value {
             background: var(--color-accent-secondary);
        }
        
        .plan-header {
            margin-bottom: 0.5rem;
        }

        .plan-header h3 {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-sm);
        }
        
        .plan-description {
            font-size: var(--font-size-sm);
            color: var(--color-text-secondary);
            min-height: 40px; /* Ensures alignment */
        }
        
        .plan-price-container {
            margin: var(--spacing-md) 0 var(--spacing-lg) 0;
            display: flex;
            align-items: baseline;
        }
        
        .plan-price {
            font-size: 2.5rem;
            font-weight: 700;
        }

        .billing-cycle {
            font-size: var(--font-size-base);
            color: var(--color-text-secondary);
            margin-left: var(--spacing-sm);
        }
        
        .plan-features {
            list-style: none;
            margin-bottom: 2rem;
            flex-grow: 1;
        }

        .feature-item {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            color: var(--color-text-secondary);
        }
        
        .feature-icon-sm {
            margin-right: var(--spacing-md);
            color: var(--color-accent-secondary);
            flex-shrink: 0;
        }

        .pricing-plan .btn {
            width: 100%;
            margin-top: auto;
        }
        
        
        /* --- FAQ SECTION --- */
        #faq {
            background-color: var(--color-background-secondary);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            border-bottom: 1px solid var(--color-border-default);
        }
        
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: var(--spacing-lg) 0;
            font-size: var(--font-size-lg);
            font-weight: 600;
            color: var(--color-text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-toggle-icon {
            transition: transform var(--duration-base);
            color: var(--color-accent-primary);
            font-size: 1.5rem;
            font-weight: 300;
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s var(--easing-base);
        }
        
        .faq-answer p {
            padding-bottom: var(--spacing-lg);
            color: var(--color-text-secondary);
        }

        .faq-item.active .faq-toggle-icon {
            transform: rotate(45deg);
        }
        
        /* --- FOOTER --- */
        .site-footer {
            background-color: var(--color-background-primary);
            padding: var(--spacing-xxxl) 0;
            border-top: 1px solid var(--color-border-default);
        }
        
        .site-footer .logo {
            font-size: 1.5rem;
            line-height: 1;       /* Tights the text bounding box */
            display: inline-flex; /* Ensures better behavior in the footer grid column */
            align-items: center;  /* Forces vertical centering */
        }
        
        .site-footer .logo svg {
            width: 20px;
            height: 20px;
            position: relative;  /* Allows for tiny optical adjustments if needed */
            top: 2px;           /* Visually pulls the icon up slightly if it looks too low, or remove this line if it now looks too high. Usually -1px or 0px hits the sweet spot. */
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-xl);
        }
        
        .footer-column .logo {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-md);
            display: inline-block;
        }

        .footer-column h4 {
            font-size: var(--font-size-lg);
            margin-bottom: var(--spacing-md);
        }
        
        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: var(--spacing-sm);
        }

        .footer-links a {
            text-decoration: none;
            color: var(--color-text-secondary);
            transition: color var(--duration-base);
        }
        
        .footer-links a:hover {
            color: var(--color-text-primary);
        }
        
        .social-links {
            display: flex;
            gap: var(--spacing-md);
        }

        .social-links a {
            color: var(--color-text-secondary);
            transition: color var(--duration-base);
        }
        
        .social-links a:hover {
            color: var(--color-accent-primary);
        }
        
        .footer-bottom {
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing-xl);
            border-top: 1px solid var(--color-border-default);
            text-align: center;
            color: var(--color-text-secondary);
            font-size: var(--font-size-sm);
        }
        



        /* --- RESPONSIVE DESIGN --- */
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 70%;
                height: 100vh;
                background-color: var(--color-background-secondary);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                transition: right var(--duration-base) var(--easing-base);
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
                padding: var(--spacing-section) 0;
            }
            
            .nav-menu.active {
                right: 0;
            }

            .mobile-nav-toggle {
                display: block;
            }
            
            :root {
                --font-size-display-md: 2.5rem;
                --font-size-display-sm: 2rem;
                --spacing-section: 4rem;
            }
            
            .hero-cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn {
                width: 100%;
                max-width: 300px;
            }

            .footer-grid {
                text-align: center;
            }
            .social-links {
                justify-content: center;
            }

            .floating-chat-box {
                bottom: var(--spacing-lg);
                right: var(--spacing-lg);
            }
        }