:root {
            --color-primary: #002147; /* Deep Navy Blue */
            --color-secondary: #00bcd4; /* Bright Teal/Aqua Accent */
            --color-background: #f4f7f9;
            --color-text: #333;
            --color-light: #fff;
            --spacing-lg: 3rem;
            --spacing-md: 1.5rem;
            --border-radius: 8px;
        }

        /* --- Base Styles --- */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Montserrat', sans-serif;
        }

        body {
            color: var(--color-text);
            background: var(--color-light);
            line-height: 1.6;
        }

        h1, h2, h3 {
            color: var(--color-primary);
            font-weight: 700;
        }

        section {
            padding: var(--spacing-lg) 5%;
            margin-bottom: var(--spacing-md);
        }

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

        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: background 0.3s, transform 0.2s;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--color-secondary);
            color: var(--color-light);
            border: none;
        }
        .btn-primary:hover {
            background: #00a0b2;
            transform: translateY(-2px);
        }

        /* --- Header --- */
        header {
            background: var(--color-primary);
            color: var(--color-light);
            padding: 15px 5%;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

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

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-light);
            text-decoration: none;
        }
        .logo span {
            color: var(--color-secondary);
        }
        
        nav a {
            color: var(--color-light);
            text-decoration: none;
            padding: 0 15px;
            font-size: 0.95rem;
            transition: color 0.3s;
        }
        nav a:hover {
            color: var(--color-secondary);
        }

        /* --- Extraordinary Animated Hero Section --- */
        #hero {
            position: relative;
            height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background: url('../img/hero.jpg') no-repeat center center/cover;
            color: var(--color-light);
        }
        
        /* The Digital Data Flow Grid Animation */
        #hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                linear-gradient(to right, rgba(0, 188, 212, 0.6) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(0, 188, 212, 0.6) 1px, transparent 1px);
            background-size: 80px 80px;
            opacity: 0.4;
            animation: dataFlow 40s linear infinite; /* Subtle continuous movement */
        }
        
        @keyframes dataFlow {
            0% { background-position: 0 0; }
            100% { background-position: 800px 800px; }
        }

        .hero-content {
            z-index: 10;
            max-width: 800px;
            padding: 20px;
            background: rgba(0, 0, 0, 0.8);
            border-radius: var(--border-radius);
        }
        
        .hero-content h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--color-light);
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
        }

        .hero-content p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            font-weight: 300;
        }

        /* --- About Preview --- */
        #about-preview {
            background: var(--color-background);
            padding: var(--spacing-lg) 5%;
        }
        .about-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 30px;
        }
        .about-card {
            padding: 30px;
            background: var(--color-light);
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            transition: transform 0.3s;
        }
        .about-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        /* --- Services Tabbed Layout --- */
        #services {
            padding: var(--spacing-lg) 5%;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
            font-size: 2.5rem;
        }

        .tab-controls {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }
        .tab-btn {
            background: var(--color-background);
            border: 1px solid #ddd;
            padding: 10px 20px;
            margin: 5px;
            cursor: pointer;
            border-radius: var(--border-radius);
            transition: background 0.3s, color 0.3s;
        }
        .tab-btn.active, .tab-btn:hover {
            background: var(--color-secondary);
            color: var(--color-light);
            border-color: var(--color-secondary);
        }

        .tab-content .service-grid {
            display: none;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }
        .tab-content .service-grid.active {
            display: grid;
        }
        
        .service-item {
            background: var(--color-light);
            padding: 20px;
            border-left: 5px solid var(--color-primary);
            border-radius: var(--border-radius);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .service-item h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }
        .service-item p {
            font-size: 0.9rem;
            color: #666;
        }

        /* --- Testimonials --- */
        #testimonials {
            background: var(--color-primary);
            color: var(--color-light);
            padding: var(--spacing-lg) 5%;
        }
        #testimonials .section-title {
            color: var(--color-secondary);
        }
        .testimonial-slider {
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: 20px;
            gap: 30px;
        }
        .testimonial-card {
            flex: 0 0 400px; /* Define card width */
            scroll-snap-align: start;
            background: rgba(255, 255, 255, 0.1);
            padding: 30px;
            border-radius: var(--border-radius);
        }
        .testimonial-card blockquote {
            font-style: italic;
            margin-bottom: 15px;
        }
        .testimonial-card cite {
            display: block;
            text-align: right;
            font-weight: 600;
            color: var(--color-secondary);
        }

        /* --- FAQ --- */
        #faq {
             background: var(--color-background);
        }
        .accordion-item {
            margin-bottom: 10px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .accordion-header {
            padding: 15px;
            background: var(--color-light);
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .accordion-content {
            padding: 0 15px;
            background: #fff;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out, padding 0.4s;
        }
        .accordion-content p {
            padding-bottom: 15px;
        }
        .accordion-item.active .accordion-content {
            max-height: 200px; /* Sufficient height for typical content */
            padding-top: 15px;
        }
        .accordion-header span {
            transition: transform 0.3s;
        }
        .accordion-item.active .accordion-header span {
            transform: rotate(45deg);
        }

        /* --- Contact Form --- */
        #contact {
            background: var(--color-light);
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
        }
        .contact-info p {
            margin-bottom: 10px;
        }

        /* --- Footer --- */
        footer {
            background: #111;
            color: #ccc;
            padding: 40px 5%;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 2fr;
            gap: 30px;
        }
        footer h4 {
            color: var(--color-secondary);
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        footer ul {
            list-style: none;
        }
        footer ul a {
            color: #ccc;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
        }
        footer ul a:hover {
            color: var(--color-secondary);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid #333;
        }
        .footer-links a {
             color: #ccc;
             margin: 0 10px;
             cursor: pointer;
        }

        /* --- Modals (Popups) --- */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: none; /* Hidden by default */
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }
        .modal.active {
            display: flex;
        }

        .modal-content {
            background: var(--color-light);
            padding: 30px;
            border-radius: var(--border-radius);
            max-width: 600px;
            width: 90%;
            position: relative;
            max-height: 90vh;
            overflow-y: auto;
        }

        .modal-content h3 {
            margin-bottom: 20px;
            border-bottom: 2px solid var(--color-secondary);
            padding-bottom: 10px;
        }

        .close-btn {
            position: absolute;
            top: 10px;
            right: 15px;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--color-primary);
        }
        
        /* Confirmation Modal */
        #confirmation-modal .modal-content {
            text-align: center;
            max-width: 400px;
        }
        #confirmation-modal h3 {
            color: green;
        }
        
        /* Newsletter specific styles */
        #modal-newsletter input[type="date"] {
            padding: 12px;
        }

        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-card {
                flex: 0 0 90%;
            }
            .tab-btn {
                width: 48%;
            }
            header nav {
                display: none; /* Hide navigation on small screens */
            }
        }