/* CSS Variables for Easy Theming */
        :root {
            --bg-dark: #070B14;
            --bg-surface: #111827;
            --primary: #3B82F6;
            --primary-hover: #2563eb;
            --text-main: #F3F4F6;
            --text-muted: #9CA3AF;
            --ua-blue: #0057b7;
            --ua-yellow: #ffd700;
            --glow: rgba(59, 130, 246, 0.3);
            --transition: all 0.3s ease;
        }

        /* Reset & Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        ul {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
            font-weight: 700;
            background: linear-gradient(135deg, #fff, #9CA3AF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        section {
            padding: 6rem 0;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--primary-hover));
            color: #fff;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px var(--glow);
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(7, 11, 20, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            z-index: 1000;
            padding: 1rem 0;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 1px;
            position: relative;
            display: flex;
            flex-direction: column;
        }

        /* Subtle Ukrainian Flag Accent under Logo */
        .logo::after {
            content: '';
            display: block;
            height: 3px;
            width: 100%;
            background: linear-gradient(to right, var(--ua-blue) 50%, var(--ua-yellow) 50%);
            border-radius: 2px;
            margin-top: 4px;
        }

        /* Navigation */
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-main);
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 6px;
            padding: 0;
        }

        .nav-toggle {
            position: relative;
            z-index: 1101;
        }

        .nav-toggle:hover {
            border-color: rgba(59, 130, 246, 0.25);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
        }

        .nav-toggle-bar {
            display: block;
            width: 20px;
            height: 2px;
            background: currentColor;
            border-radius: 999px;
            transition: var(--transition);
        }

        .mobile-phone {
            display: none;
        }

        .mobile-menu-logo {
            display: none;
        }

        header.nav-open .nav-toggle-bar:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

        header.nav-open .nav-toggle-bar:nth-child(2) {
            opacity: 0;
            transform: translateX(-6px);
        }

        header.nav-open .nav-toggle-bar:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        nav ul {
            display: flex;
            gap: 2rem;
        }

        nav a {
            font-size: 0.95rem;
            font-weight: 400;
            color: var(--text-main);
            transition: var(--transition);
        }

        nav a:hover {
            color: var(--primary);
            text-shadow: 0 0 8px var(--glow);
        }

        .contact-phone {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        .contact-phone a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .contact-phone a:hover {
            color: var(--text-main);
            text-shadow: 0 0 10px var(--glow);
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            background: #070B14;
            overflow: hidden;
            padding-top: 80px; /* Offset for header */
        }

        .hero-video {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            filter: saturate(1.12) contrast(1.1) brightness(1.02);
            transform: scale(1.03);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(rgba(7, 11, 20, 0.78), rgba(7, 11, 20, 0.95));
            pointer-events: none;
        }

        .hero-content {
            max-width: 800px;
            padding: 0 2rem;
            animation: fadeIn 1s ease-out;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            font-weight: 700;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
        }

        /* About Section */
        .about {
            background-color: var(--bg-dark);
        }

        .about-content {
            background: var(--bg-surface);
            padding: 4rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            box-shadow: inset 0 0 40px rgba(59, 130, 246, 0.05);
        }

        .about p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .feature-item i {
            color: var(--primary);
            font-size: 1.5rem;
        }

        .feature-item span {
            font-weight: 600;
            color: var(--text-main);
        }

        /* Services Section */
        .services {
            background-color: #0A0F1A; /* Slightly lighter for contrast */
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: var(--bg-surface);
            padding: 2.5rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px var(--glow);
            border-color: rgba(59, 130, 246, 0.2);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

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

        /* Trust Section */
        .trust {
            background-color: var(--bg-dark);
        }

        .trust-intro {
            text-align: center;
            color: var(--text-muted);
            margin: -1.5rem auto 3rem;
            max-width: 820px;
            font-size: 1.1rem;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        .trust-card {
            background: var(--bg-surface);
            padding: 2.25rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
        }

        .trust-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .trust-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px var(--glow);
            border-color: rgba(59, 130, 246, 0.2);
        }

        .trust-card:hover::before {
            opacity: 1;
        }

        .trust-card i {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 0;
            flex: 0 0 auto;
        }

        .trust-card h3 {
            font-size: 1.15rem;
            margin-bottom: 0.85rem;
            font-weight: 600;
        }

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

        /* Technologies Section */
        .technologies {
            text-align: center;
        }

        .tech-intro {
            color: var(--text-muted);
            margin-bottom: 3rem;
            font-size: 1.1rem;
        }

        .tech-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 3rem;
        }

        .tech-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .tech-item i {
            font-size: 3rem;
        }

        .tech-item:hover {
            color: var(--primary);
            transform: scale(1.1);
            text-shadow: 0 0 15px var(--glow);
        }

        /* Contact Section */
        .contact {
            background-color: #0A0F1A;
        }

        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            background: var(--bg-surface);
            padding: 4rem;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .contact-info p {
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }

        .info-item i {
            color: var(--primary);
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .form-group input, 
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: var(--text-main);
            font-family: 'Inter', sans-serif;
            transition: var(--transition);
        }

        .form-group input:focus, 
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
            background: rgba(255, 255, 255, 0.05);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 150px;
        }

        /* Footer */
        footer {
            background-color: #04070B;
            padding: 4rem 0 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 4rem;
            margin-bottom: 3rem;
        }

        .footer-about p {
            color: var(--text-muted);
            margin-top: 1rem;
            font-size: 0.95rem;
        }

        .footer-links h4, .footer-contact h4 {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            font-weight: 600;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .footer-links a {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.95rem;
        }

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

        .footer-contact p {
            color: var(--text-muted);
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }

        .copyright {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Keyframes */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .contact-container, .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                display: grid;
                grid-template-columns: 1fr auto;
                align-items: center;
                gap: 0.75rem;
            }
            .contact-phone {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                justify-self: end;
            }

            .site-nav {
                display: none;
                position: fixed;
                inset: 0;
                width: 100vw;
                height: 100vh;
                z-index: 1100;
                padding: 6.5rem 2rem 2.25rem;
                background: #070B14;
            }

            header.nav-open .site-nav {
                display: flex;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 2rem;
                animation: fadeIn 0.18s ease-out;
            }

            .mobile-menu-logo {
                position: absolute;
                top: 1.5rem;
                left: 2rem;
                padding: 0;
                background: transparent;
            }

            .site-nav .nav-list {
                display: flex;
                flex-direction: column;
                gap: 1rem;
                align-items: center;
            }

            .site-nav a {
                display: block;
                padding: 0.75rem 1.25rem;
                border-radius: 14px;
                font-size: 1.35rem;
                font-weight: 600;
                letter-spacing: 0.2px;
                background: rgba(255, 255, 255, 0.03);
            }

            .site-nav a:hover {
                background: rgba(59, 130, 246, 0.10);
                color: var(--text-main);
                text-shadow: none;
            }

            .mobile-phone {
                position: absolute;
                left: 0;
                right: 0;
                bottom: 1.75rem;
                text-align: center;
                color: var(--text-muted);
                font-weight: 600;
                letter-spacing: 0.2px;
                display: block;
            }

            .mobile-phone a {
                color: inherit;
                text-decoration: none;
                transition: var(--transition);
            }

            .mobile-phone a:hover {
                color: var(--text-main);
                text-shadow: 0 0 10px var(--glow);
            }

            body.menu-open {
                overflow: hidden;
            }

            .about-content {
                padding: 2rem;
            }
            .services-grid,
            .trust-grid {
                gap: 1.25rem;
            }

            .service-card,
            .trust-card {
                padding: 1.5rem;
            }

            .service-card i {
                font-size: 2.1rem;
                margin-bottom: 1rem;
            }

            .service-card h3 {
                font-size: 1.15rem;
            }

            .trust-card {
                flex-direction: column;
                gap: 1rem;
                align-items: flex-start;
            }

            .trust-card i {
                font-size: 2rem;
            }

            .contact-container {
                padding: 2rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }