/* CSS Reset */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        /* CSS Variables (Dark Theme Default) */
        :root {
            --bg-color: #1a1a1a; /* Dark background */
            --text-color: #e0e0e0; /* Light text */
            --primary-color: #007bff; /* Accent color (e.g., blue) */
            --secondary-color: #6c757d; /* Muted color */
            --card-bg: #2a2a2a; /* Slightly lighter dark for cards/sections */
            --border-color: #444;
            --link-color: #4dabf7; /* Light blue for links */
            --link-hover-color: #1e90ff;
            --heading-font: 'Poppins', sans-serif;
            --body-font: 'Poppins', sans-serif;
            --shadow-color: rgba(0, 0, 0, 0.3);
            --icon-color: var(--primary-color);
            --header-height: 70px; /* Define header height variable */
        }

        /* Light Theme Variables */
        body[data-theme="light"] {
            --bg-color: #f8f9fa; /* Light background */
            --text-color: #212529; /* Dark text */
            --primary-color: #0056b3; /* Darker blue for light mode */
            --secondary-color: #6c757d;
            --card-bg: #ffffff; /* White cards */
            --border-color: #dee2e6;
            --link-color: #0056b3;
            --link-hover-color: #003d80;
            --shadow-color: rgba(0, 0, 0, 0.1);
            --icon-color: var(--primary-color);
        }

        html {
            scroll-behavior: smooth; /* Smooth scrolling for anchor links */
            font-size: 16px; /* Base font size */
        }

        body {
            font-family: var(--body-font);
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            transition: background-color 0.3s ease, color 0.3s ease;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        /* Prevent background scroll when mobile menu is open */
        body.menu-open {
             overflow: hidden;
        }


        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px; /* Rounded corners for images */
        }

        a {
            color: var(--link-color);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--link-hover-color);
            text-decoration: underline;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--heading-font);
            margin-bottom: 0.75em;
            line-height: 1.3;
            font-weight: 600;
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }

        p {
            margin-bottom: 1em;
        }

        /* Utility Classes */
        .container {
            width: 90%;
            max-width: 1140px; /* Max width for content */
            margin-left: auto;
            margin-right: auto;
            padding-left: 15px;
            padding-right: 15px;
        }

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

        .button {
            display: inline-block;
            padding: 12px 25px;
            background-color: var(--primary-color);
            color: #fff;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.2s ease;
            font-family: var(--body-font);
            font-size: 1rem;
        }

        .button:hover {
            background-color: var(--link-hover-color);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px); /* Slight lift effect */
        }

        .button.secondary {
            background-color: var(--secondary-color);
        }
        .button.secondary:hover {
            background-color: #5a6268;
        }

        /* Header & Navigation */
        .site-header {
            padding: 0.5rem 0; /* Reduced padding slightly */
            background-color: var(--card-bg);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 5px var(--shadow-color);
            min-height: var(--header-height); /* Ensure header has a minimum height */
            display: flex; /* Use flex to align items vertically if needed */
            align-items: center; /* Center items vertically */
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%; /* Ensure container takes full width */
        }

        .logo {
            font-size: 1.3rem; /* Adjusted size */
            font-weight: 700;
            color: var(--text-color);
            text-decoration: none;
            display: flex; /* Align image and text */
            align-items: center;
            flex-shrink: 0; /* Prevent logo from shrinking */
        }
         .logo img {
            height: 40px; /* Adjust logo height */
            width: auto;
            vertical-align: middle;
            margin-right: 10px;
            border-radius: 4px; /* Slightly smaller radius */
        }

        /* Navigation Styles */
        .main-nav {
             /* Display normally on desktop */
             margin: 0 1rem; /* Add space between logo and nav, nav and actions */
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            gap: 1.5rem; /* Spacing between nav items */
            margin: 0; /* Remove default margin */
            padding: 0; /* Remove default padding */
        }

        .main-nav a {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            padding: 5px 0;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap; /* Prevent nav items wrapping */
        }
        .main-nav a::after { /* Underline effect on hover/active */
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -2px; /* Position underline slightly below */
            left: 0;
            background-color: var(--primary-color);
            transition: width 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a:focus, /* Add focus style */
        .main-nav a.active {
            color: var(--primary-color); /* Highlight color on hover/active */
        }

        .main-nav a:hover::after,
        .main-nav a:focus::after,
        .main-nav a.active::after {
             width: 100%;
        }


        /* Right side container for buttons */
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.5rem; /* Add space between buttons inside this container */
        }

        /* Theme Toggle Button */
        .theme-toggle-button {
            background: none;
            border: 1px solid var(--border-color);
            color: var(--text-color);
            padding: 8px 12px;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s, border-color 0.3s;
            font-size: 1rem; /* Adjusted size */
            margin-left: 0; /* Removed specific margin, handled by parent gap */
            line-height: 1; /* Prevent extra vertical space */
            flex-shrink: 0; /* Prevent button from shrinking */
        }
        .theme-toggle-button:hover {
            background-color: var(--border-color);
        }
        .theme-toggle-button .fa-sun { display: none; }
        body[data-theme="light"] .theme-toggle-button .fa-moon { display: none; }
        body[data-theme="light"] .theme-toggle-button .fa-sun { display: inline-block; }
        .theme-toggle-button .sr-only { /* Screen reader only text */
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }


        /* --- Burger Menu Button --- */
        .menu-toggle-button {
            display: none; /* Hidden by default on larger screens */
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 1.5rem; /* Size of the icon */
            cursor: pointer;
            padding: 5px; /* Add some clickable area */
            z-index: 1010; /* Ensure it's above the nav panel */
            flex-shrink: 0; /* Prevent button from shrinking */
        }

        /* Burger Icon Lines */
        .menu-toggle-button .burger-line {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-color);
            margin: 5px 0;
            border-radius: 1px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        /* Animation for burger to X (when active) */
        .menu-toggle-button.active .burger-line:nth-child(1) {
             transform: translateY(8px) rotate(45deg);
        }
        .menu-toggle-button.active .burger-line:nth-child(2) {
             opacity: 0;
        }
        .menu-toggle-button.active .burger-line:nth-child(3) {
             transform: translateY(-8px) rotate(-45deg);
        }


        /* Main Content Area */
        main {
            flex-grow: 1; /* Ensure footer stays at bottom */
            padding-top: var(--header-height); /* Add padding to prevent overlap with sticky header */
        }

        /* Sections General Styling */
        .wrapper {
            padding: 3rem 0; /* Adjusted padding */
        }

        .wrapper:nth-child(odd) { /* Alternate background for visual separation */
             background-color: var(--card-bg);
        }

        .inner {
            max-width: 960px; /* Slightly narrower content for readability */
            margin: 0 auto;
        }

        /* Intro Section */
        #intro {
            min-height: calc(70vh - var(--header-height)); /* Adjust height considering header */
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background-color: transparent; /* Use body background */
        }
        #intro h1 {
            font-size: 3rem;
            margin-bottom: 0.5em;
            color: var(--primary-color); /* Highlight main heading */
        }
        #intro p {
            font-size: 1.2rem;
            color: var(--secondary-color);
            margin-bottom: 1.5em;
        }
        #intro small {
            font-size: 1rem;
            display: block;
            margin-bottom: 2em;
        }

        /* Section One (Who We Are - Spotlights) */
        #one .spotlight {
            display: flex;
            flex-wrap: wrap; /* Allow wrapping on smaller screens */
            align-items: center;
            margin-bottom: 3rem;
            gap: 2rem; /* Space between image and text */
            background-color: var(--bg-color); /* Ensure contrast if section bg is card-bg */
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 4px 10px var(--shadow-color);
            border: 1px solid var(--border-color);
            overflow: hidden; /* Prevent content overflow issues */
        }
        #one .spotlight:nth-child(even) {
            flex-direction: row-reverse; /* Alternate layout */
        }
        #one .spotlight .image {
            flex: 1 1 300px; /* Flex properties for image container */
            max-width: 100%; /* Ensure image doesn't overflow container */
        }
        #one .spotlight .content {
            flex: 2 1 400px; /* Flex properties for text content */
        }
        #one .spotlight h2 {
            margin-bottom: 0.5em;
        }
        #one .spotlight .actions {
            margin-top: 1.5em;
        }

        /* Section Two (What We Do - Features) */
        #two .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive grid */
            gap: 2rem;
            margin-top: 3rem;
        }
        #two .feature-item {
            background-color: var(--bg-color); /* Contrast background */
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px var(--shadow-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        #two .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px var(--shadow-color);
        }
        #two .feature-item .icon {
            font-size: 3rem; /* Larger icons */
            color: var(--icon-color);
            margin-bottom: 1rem;
            display: block;
        }
        #two .feature-item h3 {
            font-size: 1.25rem;
            margin-bottom: 0.75em;
        }
        #two .actions { /* Added for Get a Quote button */
             list-style: none;
             padding: 0;
             margin-top: 3rem;
             text-align: center;
        }


        /* Section Three (Get in Touch) */
        #three .split {
            display: flex;
            flex-wrap: wrap;
            gap: 3rem; /* Space between form and contact info */
            margin-top: 3rem;
        }
        #three .split > * { /* Target direct children (form section, contact section) */
            flex: 1; /* Each takes half the space */
            min-width: 300px; /* Minimum width before wrapping */
        }
        #three form .field {
            margin-bottom: 1.5rem;
        }
        #three form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }
        #three form input[type="text"],
        #three form input[type="email"],
        #three form textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            background-color: var(--bg-color); /* Match input background */
            color: var(--text-color);
            font-family: var(--body-font);
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        #three form input[type="text"]:focus,
        #three form input[type="email"]:focus,
        #three form textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2); /* Use RGB for primary color alpha */
        }
         body[data-theme="light"] #three form input[type="text"]:focus,
         body[data-theme="light"] #three form input[type="email"]:focus,
         body[data-theme="light"] #three form textarea:focus {
            box-shadow: 0 0 0 2px rgba(0, 86, 179, 0.2); /* Darker blue alpha */
         }

        #three form textarea {
            min-height: 120px;
            resize: vertical;
        }
        #three form .actions {
            margin-top: 1.5rem;
             list-style: none; /* Ensure bullet points are removed */
             padding: 0;
        }

        #three .contact ul {
            list-style: none;
            padding: 0;
        }
        #three .contact li {
            margin-bottom: 1.5rem;
            display: flex; /* Align icon and text */
            align-items: flex-start; /* Align items to the top */
            gap: 1rem; /* Space between icon and text block */
        }
        #three .contact h3 {
            margin-bottom: 0.2em; /* Reduced margin */
            font-size: 1.1rem; /* Slightly smaller heading */
            color: var(--primary-color);
             margin-top: 0; /* Remove default top margin */
             line-height: 1.2; /* Adjust line height */
        }
        #three .contact .icon-contact {
             font-size: 1.5rem; /* Consistent icon size */
             color: var(--icon-color);
             margin-top: 2px; /* Align icon better vertically */
             flex-shrink: 0; /* Prevent icon from shrinking */
             width: 25px; /* Fixed width for alignment */
             text-align: center;
        }
         #three .contact .contact-details {
             flex-grow: 1; /* Allow text content to take remaining space */
         }
        #three .contact span, #three .contact a {
            color: var(--secondary-color); /* Muted text for details */
            display: block; /* Ensure details are on new lines if needed */
             font-size: 0.95rem;
        }
        body[data-theme="light"] #three .contact span,
        body[data-theme="light"] #three .contact a {
             color: #555; /* Slightly darker secondary text for light mode */
        }
        #three .contact a {
            color: var(--link-color); /* Ensure email link uses link color */
            text-decoration: none;
        }
        #three .contact a:hover {
            text-decoration: underline;
        }
        #three .contact .icons {
            display: flex;
            gap: 1rem; /* Space between social icons */
            margin-top: 0.5em;
            padding-left: 0; /* Align with text */
            list-style: none; /* Ensure no list styles */
        }
        #three .contact .icons a {
            font-size: 1.5rem;
            color: var(--secondary-color);
            transition: color 0.3s ease;
        }
        #three .contact .icons a:hover {
            color: var(--primary-color);
            text-decoration: none;
        }
         /* Make Font Awesome icons take space */
         #three .contact .icons .label { display: none; }
         #three .contact .icons a::before {
            display: inline-block;
            font-style: normal;
            font-variant: normal;
            text-rendering: auto;
            -webkit-font-smoothing: antialiased;
            font-family: "Font Awesome 6 Brands"; /* Check your Font Awesome version/kit */
            font-weight: 400; /* Or 900 for solid */
         }
         #three .contact .icons .fa-twitter::before { content: "\f099"; }
         #three .contact .icons .fa-facebook::before { content: "\f09a"; }
         #three .contact .icons .fa-github::before { content: "\f09b"; }
         #three .contact .icons .fa-instagram::before { content: "\f16d"; }
         #three .contact .icons .fa-linkedin::before { content: "\f0e1"; }


        /* Footer */
        .site-footer {
            padding: 2rem 0;
            background-color: var(--card-bg);
            border-top: 1px solid var(--border-color);
            margin-top: auto; /* Push footer to bottom */
            text-align: center;
            color: var(--secondary-color);
            font-size: 0.9rem;
        }
        .site-footer .menu {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .site-footer .menu li {
             display: inline-block; /* Keep items inline */
        }
        .site-footer .menu a {
            color: var(--secondary-color);
        }
        .site-footer .menu a:hover {
            color: var(--link-color);
        }

        /* --------------------- */
        /* Responsive Adjustments */
        /* --------------------- */
        @media (max-width: 768px) {
             :root {
                 --header-height: 60px; /* Optionally adjust header height for mobile */
             }

            h1 { font-size: 2rem; }
            h2 { font-size: 1.75rem; }
            h3 { font-size: 1.3rem; }

            .container { width: 95%; }

            /* --- Header & Mobile Nav --- */
            .header-container {
                /* Keep flex-direction: row (default) */
                /* justify-content: space-between; already set */
                position: relative; /* Needed for absolute positioning of nav */
                flex-wrap: nowrap; /* Prevent wrapping of logo/actions */
            }

            .menu-toggle-button {
                display: flex; /* Show burger button */
                flex-direction: column;
                justify-content: center;
                align-items: center;
                 /* Order handled by parent flex + source order */
            }

            /* Position the actions container to the far right */
            .header-actions {
                 margin-left: auto; /* Push actions group to the right */
                 /* Order not needed if nav is absolute/transformed */
            }

            .main-nav {
                /* Mobile Nav Panel Styling */
                /* order: 4; /* No longer needed with absolute positioning */
                position: absolute;
                top: var(--header-height); /* Position below the header dynamically */
                left: 0;
                width: 100%;
                background-color: var(--card-bg);
                border-top: 1px solid var(--border-color);
                box-shadow: 0 5px 10px var(--shadow-color);
                z-index: 999; /* Below header but above content */

                /* Hiding mechanism */
                transform: translateX(-100%); /* Start off-screen to the left */
                transition: transform 0.4s ease-in-out, visibility 0.4s; /* Smooth slide */
                visibility: hidden; /* Hide accessibility wise when off-screen */

                /* Reset desktop margin */
                margin: 0;
                padding: 1rem 0; /* Add padding to the panel */
            }

            .main-nav.active { /* State when menu is open */
                transform: translateX(0); /* Slide in */
                 visibility: visible;
            }

            /* Layout for Links inside panel */
            .main-nav ul {
                flex-direction: column; /* Stack nav items vertically */
                align-items: center; /* Center items */
                gap: 0.5rem; /* Adjust gap for vertical layout */
                width: 100%;
            }

            .main-nav li {
                width: 100%; /* Make list items full width */
                text-align: center; /* Center text */
            }

            .main-nav a {
                display: block; /* Make links take full width for easier tapping */
                padding: 0.8rem 1rem; /* Add padding */
                width: 100%;
            }
            .main-nav a::after {
                 display: none; /* Hide underline effect on mobile nav items */
            }
            .main-nav a:hover,
            .main-nav a.active {
                 background-color: rgba(0, 123, 255, 0.1); /* Use RGB for primary color alpha */
                 color: var(--primary-color); /* Ensure text color changes */
            }
             /* Ensure body[data-theme="light"] primary color is used */
              body[data-theme="light"] .main-nav a:hover,
              body[data-theme="light"] .main-nav a.active {
                 background-color: rgba(0, 86, 179, 0.1); /* Darker blue alpha */
              }

            /* Adjust main content padding top if header height changes on mobile */
             main { padding-top: var(--header-height); }

            /* --- Other Sections --- */
            #intro {
                 min-height: calc(60vh - var(--header-height)); /* Adjust intro height */
            }
            #intro h1 { font-size: 2.2rem; }

            #one .spotlight,
            #one .spotlight:nth-child(even) {
                flex-direction: column; /* Stack image and text vertically */
                text-align: center;
            }
            #one .spotlight .image { margin-bottom: 1.5rem; }
            #one .spotlight .content { flex-basis: auto; } /* Reset flex-basis */

            #three .split { flex-direction: column; } /* Stack form and contact info */
            #three .split > * { min-width: unset; } /* Remove min-width on mobile */

            #three .contact li {
                flex-direction: column; /* Stack icon and text vertically */
                align-items: center; /* Center align items */
                text-align: center;
                gap: 0.5rem;
            }
             #three .contact .icon-contact {
                  margin-top: 0; /* Reset top margin */
             }
            #three .contact .icons {
                justify-content: center; /* Center social icons */
            }
        }

        /* Further breakpoint for very small screens if needed */
        @media (max-width: 480px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            #intro h1 { font-size: 2rem; }
            #intro p { font-size: 1.1rem; }

            .button {
                 padding: 10px 20px;
                 font-size: 0.9rem;
            }

            #two .features {
                 grid-template-columns: 1fr; /* Single column layout */
            }
             #three form input[type="text"],
             #three form input[type="email"],
             #three form textarea {
                 padding: 10px;
                 font-size: 0.95rem;
             }
        }