/* =========================================
           CSS VARIABLES & THEME SETUP
           ========================================= */
        :root {
            /* Default Dark Theme (Tech/Advanced) */
            --bg-color: #050505;
            --bg-secondary: #0f0f0f;
            --text-primary: #ffffff;
            --text-secondary: #a0a0a0;
            --primary-color: #00f2ff; /* Neon Cyan */
            --secondary-color: #7000ff; /* Neon Purple */
            --accent-color: #ff0055;
            --card-bg: rgba(255, 255, 255, 0.03);
            --card-border: rgba(255, 255, 255, 0.1);
            --glass-blur: 10px;
            --shadow-glow: 0 0 20px rgba(0, 242, 255, 0.15);
            --transition: all 0.3s ease;
            --nav-height: 80px;
        }

        /* Light Theme Override */
        body.light-mode {
            --bg-color: #f4f7f6;
            --bg-secondary: #ffffff;
            --text-primary: #1a1a1a;
            --text-secondary: #555555;
            --primary-color: #0066cc; /* Corporate Blue */
            --secondary-color: #004499;
            --accent-color: #ff6600;
            --card-bg: #ffffff;
            --card-border: #e0e0e0;
            --shadow-glow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }

        /* =========================================
           RESET & BASE STYLES
           ========================================= */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px; 
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-primary);
            transition: background-color 0.5s ease, color 0.5s ease;
            overflow-x: hidden;
            line-height: 1.6;
        }

        h1, h2, h3, h4 {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        ul {
            list-style: none;
        }

        /* =========================================
           UTILITIES & LAYOUT
           ========================================= */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 100px 0;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .btn {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            text-transform: uppercase;
            font-size: 0.9rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 242, 255, 0.4);
        }

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

        .btn-outline:hover {
            background: var(--primary-color);
            color: #fff;
        }

        /* Canvas Background */
        #tech-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.8;
            pointer-events: none;
        }

        /* =========================================
           WHATSAPP FLOATING BUTTON
           ========================================= */
        .whatsapp-float {
            position: fixed;
            width: 60px;
            height: 60px;
            bottom: 40px;
            right: 40px;
            background-color: #25d366;
            color: #FFF;
            border-radius: 50px;
            text-align: center;
            font-size: 30px;
            box-shadow: 2px 2px 3px #999;
            z-index: 10000;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
            background-color: #20b857;
            box-shadow: 0 0 20px rgba(37, 211, 102, 0.8);
        }

        /* Pulse Animation for WhatsApp */
        @keyframes pulse-green {
            0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
            70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
            100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
        }
        
        .whatsapp-float {
            animation: pulse-green 2s infinite;
        }

        /* =========================================
           HEADER & NAV
           ========================================= */
        header {
            height: var(--nav-height);
            display: flex;
            align-items: center;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(5, 5, 5, 0.8);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(255,255,255,0.05);
            transition: var(--transition);
        }

        body.light-mode header {
            background: rgba(255, 255, 255, 0.9);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            font-family: 'Space Grotesk', sans-serif;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--primary-color);
            font-size: 1.8rem;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: var(--primary-color);
            transition: width 0.3s;
        }

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

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

        .theme-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.2rem;
            cursor: pointer;
            transition: transform 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
        }

        .theme-toggle:hover {
            transform: rotate(30deg);
            color: var(--primary-color);
            background: rgba(255,255,255,0.05);
        }

        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-primary);
            background: none;
            border: none;
        }

        /* =========================================
           HERO SECTION
           ========================================= */
        .hero {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            padding-top: var(--nav-height);
        }

        .hero-content h1 {
            font-size: 4rem;
            margin-bottom: 20px;
            line-height: 1.1;
        }

        .hero-content p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            gap: 20px;
            justify-content: center;
        }

        .scroll-down {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            animation: bounce 2s infinite;
            color: var(--text-secondary);
            cursor: pointer;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {transform: translateY(0) translateX(-50%);}
            40% {transform: translateY(-10px) translateX(-50%);}
            60% {transform: translateY(-5px) translateX(-50%);}
        }

        /* =========================================
           SERVICES CARDS
           ========================================= */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .section-header .line {
            width: 60px;
            height: 4px;
            background: var(--primary-color);
            margin: 0 auto;
            border-radius: 2px;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 40px 30px;
            border-radius: 20px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(var(--glass-blur));
        }

        .service-card:hover {
            transform: translateY(-10px);
            border-color: var(--primary-color);
            box-shadow: var(--shadow-glow);
        }

        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            display: inline-block;
        }

        .service-card h3 {
            margin-bottom: 15px;
            font-size: 1.4rem;
        }

        .service-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* =========================================
           ABOUT & STATS
           ========================================= */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-image {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
        }

        .about-image img {
            width: 100%;
            display: block;
            border-radius: 20px;
            filter: grayscale(100%);
            transition: var(--transition);
        }

        .about-image:hover img {
            filter: grayscale(0%);
            transform: scale(1.03);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .stat-box {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 20px;
            border-radius: 15px;
            text-align: center;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            font-family: 'Space Grotesk', sans-serif;
            display: block;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* =========================================
           CTA SECTION
           ========================================= */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 242, 255, 0.1), rgba(112, 0, 255, 0.1));
            border-radius: 30px;
            text-align: center;
            padding: 80px 40px;
            border: 1px solid var(--card-border);
            position: relative;
            overflow: hidden;
        }

        .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-bg-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 8rem;
            font-weight: 900;
            color: rgba(255,255,255,0.02);
            white-space: nowrap;
            font-family: 'Space Grotesk', sans-serif;
            z-index: 1;
            user-select: none;
        }

        /* =========================================
           FOOTER
           ========================================= */
        footer {
            background: var(--bg-secondary);
            padding: 80px 0 30px;
            border-top: 1px solid var(--card-border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-info p {
            color: var(--text-secondary);
            margin-top: 20px;
            max-width: 300px;
        }

        .footer-links h4 {
            margin-bottom: 20px;
        }

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

        .footer-links a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--card-border);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* =========================================
           RESPONSIVE DESIGN
           ========================================= */
        @media (max-width: 991px) {
            .hero-content h1 { font-size: 3rem; }
            .about-wrapper { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .logo { font-size: 1.3rem; }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 40px;
                transform: translateY(-150%);
                transition: transform 0.3s ease;
                border-bottom: 1px solid var(--card-border);
            }

            .nav-links.active {
                transform: translateY(0);
            }

            .hamburger { display: block; }
            
            .hero-content h1 { font-size: 2.5rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .hero-btns { flex-direction: column; }
            
            /* Adjust Logo size for mobile to fit Swastik IT Solution */
            .logo { font-size: 1.1rem; }
            .logo i { font-size: 1.4rem; }
            
            .whatsapp-float {
                bottom: 20px;
                right: 20px;
                width: 50px;
                height: 50px;
                font-size: 24px;
            }
        }

        /* Animation Classes */
        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }