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

        :root {
            --primary-blue: #1B4185;
            --dark-blue: #0D2647;
            --light-blue: #2A5BAA;
            --accent-blue: #3D7BD9;
            --text-dark: #1d1d1f;
            --text-gray: #6e6e73;
            --bg-light: #f5f5f7;
            --white: #ffffff;
        }

        /* Dark Mode Variables */
        [data-theme="dark"] {
            --primary-blue: #3D7BD9;
            --dark-blue: #1B4185;
            --light-blue: #5A8FDB;
            --accent-blue: #6B9FE8;
            --text-dark: #e8e8ed;
            --text-gray: #a1a1a6;
            --bg-light: #1c1c1e;
            --white: #0a0a0a;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: var(--text-dark);
            background: var(--white);
            overflow-x: hidden;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        /* Dark Mode Specific Overrides */
        [data-theme="dark"] nav {
            background: rgba(28, 28, 30, 0.95);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        [data-theme="dark"] .hero {
            background: linear-gradient(135deg, #0d0d0d 0%, #000000 100%);
        }

        [data-theme="dark"] .service-card,
        [data-theme="dark"] .tech-item,
        [data-theme="dark"] .portfolio-card,
        [data-theme="dark"] .testimonial-card {
            background: #1c1c1e;
            border-color: rgba(255, 255, 255, 0.1);
        }

        [data-theme="dark"] .stats {
            background: #0D1117;
        }

        [data-theme="dark"] .service {
            background: #0a0a0a;
        }

        [data-theme="dark"] .technologies,
        [data-theme="dark"] .process {
            background: #000000;
        }

        [data-theme="dark"] footer {
            background: #0D1117;
        }

        [data-theme="dark"] .contact-method {
            background: #1c1c1e;
        }

        [data-theme="dark"] .contact-method:hover {
            background: #2c2c2e;
        }

        /* Dark Mode Toggle Button */
        .dark-mode-toggle {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background: var(--primary-blue);
            border-radius: 50%;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            box-shadow: 0 5px 20px rgba(27, 65, 133, 0.3);
            z-index: 999;
            transition: all 0.3s ease;
        }

        .dark-mode-toggle:hover {
            transform: scale(1.1) rotate(20deg);
            box-shadow: 0 8px 30px rgba(27, 65, 133, 0.5);
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(27, 65, 133, 0.1);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 15px 40px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .logo-img {
            height: 45px;
            width: auto;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-blue);
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            gap: 35px;
            list-style: none;
        }

        .nav-links a {
            color: var(--primary-blue);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s;
            position: relative;
        }

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

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

        /* Hero Section */
        .hero {
            margin-top: 75px;
            padding: 120px 40px 100px;
            text-align: center;
            background: linear-gradient(135deg, #f8f9fb 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 150%;
            background: radial-gradient(circle, rgba(27, 65, 133, 0.03) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 68px;
            font-weight: 800;
            letter-spacing: -2.5px;
            margin-bottom: 25px;
            line-height: 1.1;
            color: var(--dark-blue);
        }

        .hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 26px;
            color: var(--text-gray);
            margin-bottom: 45px;
            font-weight: 400;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-button {
            display: inline-block;
            padding: 18px 45px;
            background: var(--primary-blue);
            color: white;
            text-decoration: none;
            border-radius: 980px;
            font-size: 17px;
            font-weight: 500;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 10px 30px rgba(27, 65, 133, 0.2);
        }

        .cta-button:hover {
            background: var(--light-blue);
            transform: translateY(-2px);
            box-shadow: 0 15px 40px rgba(27, 65, 133, 0.3);
        }

        .cta-secondary {
            background: transparent;
            color: var(--primary-blue);
            border: 2px solid var(--primary-blue);
            box-shadow: none;
            margin-left: 15px;
        }

        .cta-secondary:hover {
            background: var(--primary-blue);
            color: white;
        }

        /* Stats Section */
        .stats {
            padding: 80px 40px;
            background: var(--primary-blue);
            color: white;
        }

        .stats-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 50px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 10px;
            color: white;
        }

        .stat-item p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 400;
        }

        /* Services Section */
        .services {
            padding: 120px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            font-size: 52px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -1.5px;
            color: var(--dark-blue);
        }

        .section-subtitle {
            text-align: center;
            font-size: 20px;
            color: var(--text-gray);
            margin-bottom: 70px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 35px;
        }

        .service-card {
            padding: 45px 35px;
            background: white;
            border: 1px solid rgba(27, 65, 133, 0.1);
            border-radius: 20px;
            transition: all 0.4s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
            transform: scaleX(0);
            transition: transform 0.4s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 50px rgba(27, 65, 133, 0.15);
            border-color: var(--primary-blue);
        }

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

        .service-icon {
            font-size: 52px;
            margin-bottom: 25px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 26px;
            margin-bottom: 18px;
            font-weight: 700;
            color: var(--dark-blue);
        }

        .service-card p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .service-features {
            list-style: none;
            margin-top: 20px;
        }

        .service-features li {
            padding: 8px 0;
            color: var(--text-gray);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .service-features li::before {
            content: '✓';
            color: var(--primary-blue);
            font-weight: bold;
            font-size: 16px;
        }

        /* Technologies Section */
        .technologies {
            padding: 100px 40px;
            background: var(--bg-light);
        }

        .tech-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 30px;
            margin-top: 60px;
        }

        .tech-item {
            background: white;
            padding: 30px;
            border-radius: 15px;
            text-align: center;
            transition: all 0.3s;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .tech-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .tech-item .icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .tech-item p {
            font-size: 14px;
            color: var(--text-gray);
            font-weight: 500;
        }

        /* Portfolio/Projects Section */
        .portfolio {
            padding: 120px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-top: 60px;
        }

        .portfolio-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s;
        }

        .portfolio-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(27, 65, 133, 0.2);
        }

        .portfolio-image {
            height: 220px;
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 60px;
            color: white;
        }

        .portfolio-content {
            padding: 30px;
        }

        .portfolio-content h3 {
            font-size: 24px;
            margin-bottom: 12px;
            color: var(--dark-blue);
        }

        .portfolio-content p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .portfolio-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            padding: 6px 14px;
            background: rgba(27, 65, 133, 0.08);
            color: var(--primary-blue);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        /* Process Section */
        .process {
            padding: 100px 40px;
            background: var(--bg-light);
        }

        .process-steps {
            max-width: 1200px;
            margin: 60px auto 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }

        .step {
            text-align: center;
            position: relative;
        }

        .step-number {
            width: 70px;
            height: 70px;
            background: var(--primary-blue);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 700;
            margin: 0 auto 25px;
            box-shadow: 0 10px 25px rgba(27, 65, 133, 0.3);
        }

        .step h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--dark-blue);
        }

        .step p {
            color: var(--text-gray);
            font-size: 15px;
            line-height: 1.6;
        }

        /* Testimonials Section */
        .testimonials {
            padding: 120px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 35px;
            margin-top: 60px;
        }

        .testimonial-card {
            background: white;
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(27, 65, 133, 0.1);
        }

        .testimonial-text {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            margin-bottom: 25px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            background: var(--primary-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 20px;
        }

        .author-info h4 {
            font-size: 16px;
            color: var(--dark-blue);
            margin-bottom: 4px;
        }

        .author-info p {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* About Section */
        .about {
            padding: 120px 40px;
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
            color: white;
            text-align: center;
        }

        .about-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .about .section-title {
            color: white;
        }

        .about-content p {
            font-size: 20px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 25px;
        }

        .about-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-top: 60px;
        }

        .about-feature {
            text-align: center;
        }

        .about-feature .icon {
            font-size: 50px;
            margin-bottom: 20px;
        }

        .about-feature h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .about-feature p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
        }

        .location {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 40px;
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            background: rgba(255, 255, 255, 0.1);
            padding: 15px 30px;
            border-radius: 50px;
        }

        /* Contact Section */
        .contact {
            padding: 120px 40px;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .contact h2 {
            font-size: 52px;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--dark-blue);
        }

        .contact p {
            font-size: 20px;
            color: var(--text-gray);
            margin-bottom: 50px;
            line-height: 1.7;
        }

        .contact-methods {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .contact-method {
            padding: 35px;
            background: var(--bg-light);
            border-radius: 15px;
            transition: all 0.3s;
        }

        .contact-method:hover {
            background: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transform: translateY(-5px);
        }

        .contact-method .icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .contact-method h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--dark-blue);
        }

        .contact-method a {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 500;
        }

        /* Footer */
        footer {
            background: var(--dark-blue);
            padding: 60px 40px 30px;
            color: white;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            font-size: 18px;
            margin-bottom: 20px;
            color: white;
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.8;
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
        }

        .footer-section a:hover {
            color: white;
        }

        .social-media {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-link {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            transition: all 0.3s;
            text-decoration: none;
        }

        .social-link:hover {
            background: var(--accent-blue);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(61, 123, 217, 0.3);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 42px;
            }

            .hero p {
                font-size: 20px;
            }

            .section-title {
                font-size: 36px;
            }

            .nav-links {
                display: none;
            }

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

            .cta-secondary {
                margin-left: 0;
                margin-top: 15px;
                display: block;
            }

            .logo-img {
                height: 38px;
            }

            .logo-text {
                font-size: 18px;
            }
        }

        /* Smooth scroll */
        html {
            scroll-behavior: smooth;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in-up {
            animation: fadeInUp 0.8s ease-out;
        }