:root {
            --navy: #001f3f;
            --slate: #708090;
            --white: #ffffff;
            --light-gray: #f5f5f5;
            --accent: #4a90e2;
            --text-dark: #333333;
            --text-light: #f0f0f0;
            --bg-dark: #121212;
            --card-dark: #1e1e1e;
        }

        [data-theme="dark"] {
            --navy: #0a192f;
            --slate: #8892b0;
            --white: #121212;
            --light-gray: #1e1e1e;
            --accent: #64ffda;
            --text-dark: #f0f0f0;
            --text-light: #333333;
            --bg-dark: #ffffff;
            --card-dark: #f5f5f5;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            transition: background-color 0.3s, color 0.3s;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-dark);
            background-color: var(--white);
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background-color: var(--navy);
            color: var(--text-light);
            padding: 20px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
            text-decoration: none;
        }

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

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

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .theme-toggle {
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            font-size: 20px;
            margin-left: 20px;
        }

        .hero {
            height: 100vh;
            background: linear-gradient(rgba(0, 31, 63, 0.8), rgba(0, 31, 63, 0.8)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            text-align: center;
            color: var(--text-light);
            padding-top: 80px;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .hero p {
            font-size: 20px;
            margin-bottom: 30px;
        }

        .btn {
            display: inline-block;
            background-color: var(--accent);
            color: var(--text-light);
            padding: 12px 30px;
            border-radius: 5px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent);
            margin-left: 15px;
        }

        section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 36px;
            color: var(--navy);
            margin-bottom: 15px;
        }

        .section-title p {
            color: var(--slate);
            max-width: 700px;
            margin: 0 auto;
        }

        .about {
            background-color: var(--light-gray);
        }

        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .about-text {
            flex: 1;
        }

        .about-text h3 {
            font-size: 28px;
            margin-bottom: 20px;
            color: var(--navy);
        }

        .about-text p {
            margin-bottom: 15px;
        }

        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .about-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .services {
            background-color: var(--white);
        }

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

        .service-card {
            background-color: var(--light-gray);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .service-image {
            height: 200px;
            overflow: hidden;
        }

        .service-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .service-card:hover .service-image img {
            transform: scale(1.1);
        }

        .service-content {
            padding: 25px;
        }

        .service-content h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--navy);
        }

        .service-content p {
            color: var(--slate);
            margin-bottom: 20px;
        }

        .contact {
            background-color: var(--light-gray);
        }

        .contact-container {
            display: flex;
            gap: 50px;
        }

        .contact-info {
            flex: 1;
        }

        .contact-info h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--navy);
        }

        .contact-details {
            margin-bottom: 30px;
        }

        .contact-details p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }

        .contact-details i {
            margin-right: 10px;
            color: var(--accent);
        }

        .contact-form {
            flex: 1;
            background-color: var(--white);
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-family: inherit;
        }

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

        footer {
            background-color: var(--navy);
            color: var(--text-light);
            padding: 40px 0 20px;
            text-align: center;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 20px;
        }

        .footer-column h3 {
            font-size: 18px;
            margin-bottom: 20px;
            color: var(--accent);
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 10px;
        }

        .footer-column ul li a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-column ul li a:hover {
            color: var(--accent);
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 20px;
        }

        .social-links a {
            color: var(--text-light);
            font-size: 20px;
            transition: color 0.3s;
        }

        .social-links a:hover {
            color: var(--accent);
        }

        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero p {
                font-size: 18px;
            }

            .about-content,
            .contact-container {
                flex-direction: column;
            }

            .btn-outline {
                margin-left: 0;
                margin-top: 15px;
            }
        }

        /* Dark mode specific styles */
        [data-theme="dark"] .hero {
            background: linear-gradient(rgba(10, 25, 47, 0.8), rgba(10, 25, 47, 0.8)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
        }

        [data-theme="dark"] .section-title h2 {
            color: var(--accent);
        }

        [data-theme="dark"] .service-card {
            background-color: var(--card-dark);
        }

        [data-theme="dark"] .service-content h3 {
            color: var(--accent);
        }

        [data-theme="dark"] .contact-form {
            background-color: var(--card-dark);
        }