/* CSS Custom Properties (Theme Variables) */
        :root {
            --color-nav-bg: #00843D;
            --color-nav-text: #FEFFFF;
            --color-bg: #FEFFFF;
            --color-surface: #FFFFFF;
            --color-heading: #006B31;
            --color-body-text: #1a1a1a;
            --color-link: #01599A;
            --color-btn-primary: #00843D;
            --color-btn-primary-text: #FFFFFF;
            --color-btn-secondary: #01599A;
            --color-border: #1EB5D3;
            --color-footer-bg: #22242E;
            --color-footer-text: #1EB5D3;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.12);
        }

        [data-theme="dark"] {
            --color-nav-bg: #353336;
            --color-nav-text: #1EB5D3;
            --color-bg: #22242E;
            --color-surface: #2C2E3A;
            --color-heading: #1EB5D3;
            --color-body-text: #FEFFFF;
            --color-link: #1EB5D3;
            --color-btn-primary: #00843D;
            --color-btn-primary-text: #FEFFFF;
            --color-btn-secondary: #1EB5D3;
            --color-border: #542F80;
            --color-footer-bg: #1a1b21;
            --color-footer-text: #1EB5D3;
        }

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

        html, body {
            width: 100%;
            height: 100%;
        }

        body {
            font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-body-text);
            line-height: 1.6;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        /* Typography */
        h1 {
            font-size: 48px;
            font-weight: bold;
            color: var(--color-heading);
            margin-bottom: 20px;
            line-height: 1.2;
        }

        h2 {
            font-size: 36px;
            font-weight: bold;
            color: var(--color-heading);
            margin-bottom: 24px;
            line-height: 1.2;
        }

        h3 {
            font-size: 28px;
            font-weight: 500;
            color: var(--color-heading);
            margin-bottom: 16px;
        }

        h4 {
            font-size: 22px;
            font-weight: bold;
            color: var(--color-heading);
            margin-bottom: 12px;
        }

        p {
            font-size: 16px;
            margin-bottom: 16px;
            line-height: 1.7;
        }

        a {
            color: var(--color-link);
            text-decoration: none;
            transition: opacity 0.3s ease;
        }

        a:hover {
            opacity: 0.8;
        }

        /* Navigation Bar */
        nav {
            background-color: var(--color-nav-bg);
            color: var(--color-nav-text);
            height: 64px;
            display: flex;
            align-items: center;
            padding: 0 40px;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-light);
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            min-width: 100px;
            cursor: pointer;
        }

        .nav-logo img {
            display: inline-block;
        }

        .nav-links {
            display: flex;
            gap: 32px;
            flex: 1;
            justify-content: center;
            list-style: none;
        }

        .nav-links a {
            color: var(--color-nav-text);
            font-weight: 500;
            font-size: 16px;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
            transition: border-bottom 0.3s ease;
            cursor: pointer;
        }

        .nav-links a:hover {
            border-bottom: 2px solid var(--color-border);
        }

        .nav-links a.active {
            border-bottom: 2px solid var(--color-border);
        }

        .nav-utilities {
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .nav-utilities a,
        .nav-utilities button {
            color: var(--color-nav-text);
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-utilities button:hover,
        .nav-utilities a:hover {
            opacity: 0.8;
        }

        .dropdown {
            position: relative;
            display: inline-block;
        }

        .dropdown-content {
            display: none;
            position: absolute;
            background-color: var(--color-nav-bg);
            min-width: 200px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
            padding: 12px 0;
            z-index: 1001;
            top: 64px;
        }

        .dropdown-content a {
            color: var(--color-nav-text);
            padding: 12px 24px;
            text-decoration: none;
            display: block;
            font-size: 16px;
        }

        .dropdown-content a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .dropdown:hover .dropdown-content {
            display: block;
        }

        /* Page Container */
        .page {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, rgba(0, 132, 61, 0.8) 0%, rgba(30, 181, 211, 0.6) 100%), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:rgb(100,150,100);stop-opacity:0.3" /><stop offset="100%" style="stop-color:rgb(50,100,150);stop-opacity:0.3" /></linearGradient></defs><rect width="1200" height="600" fill="url(%23grad1)"/></svg>');
            background-size: cover;
            background-position: center;
            color: var(--color-nav-text);
            padding: 120px 40px;
            text-align: center;
            min-height: 600px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .hero h1 {
            color: var(--color-nav-text);
            font-size: 56px;
            margin-bottom: 24px;
        }

        .hero .subheading {
            font-size: 24px;
            margin-bottom: 40px;
            max-width: 800px;
            line-height: 1.6;
            color: var(--color-nav-text);
        }

        .cta-buttons {
            display: flex;
            gap: 24px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            padding: 16px 40px;
            font-size: 16px;
            font-weight: bold;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            min-height: 44px;
            display: flex;
            align-items: center;
        }

        .btn-primary {
            background-color: var(--color-btn-primary);
            color: var(--color-btn-primary-text);
        }

        .btn-primary:hover {
            opacity: 0.9;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(0, 132, 61, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--color-btn-primary-text);
            border: 2px solid var(--color-btn-primary-text);
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        /* Containers & Layout */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: 80px 40px;
        }

        .section-alt {
            background-color: var(--color-surface);
        }

        /* Grid */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            margin-top: 40px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-top: 40px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-top: 40px;
        }

        /* Cards */
        .card {
            background-color: var(--color-surface);
            border-radius: 8px;
            padding: 32px;
            box-shadow: var(--shadow-light);
            transition: all 0.3s ease;
            border: 1px solid #e0e0e0;
        }

        [data-theme="dark"] .card {
            border: 1px solid var(--color-border);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .card h3 {
            margin-top: 0;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            background-color: var(--color-border);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 24px;
        }

        /* Counter Section */
        .counters {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 40px;
            text-align: center;
        }

        .counter-item {
            padding: 32px;
            background-color: var(--color-surface);
            border-radius: 8px;
            box-shadow: var(--shadow-light);
        }

        .counter-number {
            font-size: 48px;
            font-weight: bold;
            color: var(--color-border);
            margin-bottom: 12px;
        }

        .counter-label {
            font-size: 16px;
            color: var(--color-body-text);
        }

        /* Featured Case Study */
        .featured-case-study {
            background-color: var(--color-surface);
            border-left: 6px solid var(--color-border);
            padding: 40px;
            border-radius: 6px;
            margin-top: 40px;
        }

        .featured-case-study h3 {
            margin-top: 0;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, var(--color-btn-primary) 0%, var(--color-border) 100%);
            color: var(--color-nav-text);
            padding: 60px 40px;
            text-align: center;
            margin: 80px 0 0 0;
        }

        .cta-banner h2 {
            color: var(--color-nav-text);
        }

        .cta-banner p {
            color: var(--color-nav-text);
            margin-bottom: 32px;
        }

        /* Footer */
        footer {
            background-color: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 60px 40px 40px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto 40px;
        }

        .footer-section h4 {
            color: var(--color-footer-text);
            margin-bottom: 20px;
        }

        .footer-section a,
        .footer-section p {
            color: var(--color-body-text);
            font-size: 14px;
            margin-bottom: 12px;
        }

        [data-theme="dark"] .footer-section a,
        [data-theme="dark"] .footer-section p {
            color: #CCCCCC;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            color: var(--color-body-text);
            font-size: 14px;
        }

        [data-theme="dark"] .footer-bottom {
            color: #CCCCCC;
        }

        /* Form */
        .form-group {
            margin-bottom: 24px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--color-heading);
        }

        input,
        textarea,
        select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-border);
            border-radius: 6px;
            font-family: inherit;
            font-size: 16px;
            background-color: var(--color-surface);
            color: var(--color-body-text);
            transition: border-color 0.3s ease;
        }

        input:focus,
        textarea:focus,
        select:focus {
            outline: none;
            border-color: var(--color-btn-primary);
            box-shadow: 0 0 0 3px rgba(0, 132, 61, 0.1);
        }

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

        /* Contact Page */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 60px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .contact-sidebar {
            padding: 32px;
            background-color: var(--color-surface);
            border-radius: 8px;
            height: fit-content;
            box-shadow: var(--shadow-light);
        }

        .contact-info {
            margin-bottom: 24px;
        }

        .contact-info h4 {
            margin-bottom: 12px;
        }

        .contact-info p {
            margin-bottom: 4px;
            font-size: 16px;
        }

        .contact-info a {
            display: block;
            margin-bottom: 4px;
        }

        /* Filter Bar */
        .filter-bar {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 10px 24px;
            border: 2px solid var(--color-border);
            background-color: transparent;
            color: var(--color-body-text);
            border-radius: 24px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .filter-btn.active {
            background-color: var(--color-btn-primary);
            color: white;
            border-color: var(--color-btn-primary);
        }

        .filter-btn:hover {
            background-color: var(--color-surface);
            border-color: var(--color-btn-primary);
        }

        /* Accordion */
        .accordion {
            margin-top: 40px;
        }

        .accordion-item {
            border: 1px solid var(--color-border);
            border-radius: 6px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-header {
            padding: 20px;
            background-color: var(--color-surface);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            color: var(--color-heading);
            user-select: none;
            transition: background-color 0.3s ease;
        }

        .accordion-header:hover {
            background-color: rgba(30, 181, 211, 0.1);
        }

        .accordion-content {
            display: none;
            padding: 20px;
            background-color: var(--color-bg);
            border-top: 1px solid var(--color-border);
        }

        .accordion-content.open {
            display: block;
        }

        .accordion-icon {
            transition: transform 0.3s ease;
        }

        .accordion-icon.open {
            transform: rotate(180deg);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .counters {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact-wrapper {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }

            h2 {
                font-size: 28px;
            }

            h3 {
                font-size: 22px;
            }

            nav {
                padding: 0 20px;
            }

            .nav-links {
                gap: 16px;
                font-size: 14px;
            }

            .nav-utilities {
                gap: 12px;
            }

            .hero {
                padding: 60px 20px;
                min-height: auto;
            }

            .hero h1 {
                font-size: 32px;
            }

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

            .section {
                padding: 40px 20px;
            }

            .container {
                padding: 0 20px;
            }

            .grid-2,
            .grid-3,
            .grid-4,
            .counters,
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .hero h1 {
                color: var(--color-nav-text);
            }

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

            .card {
                padding: 24px;
            }

            p {
                font-size: 15px;
            }
        }
    
/* ---------- Mobile navigation (merged from mobile prototype) ---------- */
.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--color-nav-text);
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.menu-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 999;
}

.menu-overlay.active { opacity: 1; visibility: visible; }

.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background-color: var(--color-nav-bg);
    transition: left 0.3s;
    z-index: 1001;
    overflow-y: auto;
    padding-top: 80px;
}

.mobile-menu.active { left: 0; }

.mobile-menu ul { list-style: none; }

.mobile-menu li { border-bottom: 1px solid rgba(255, 255, 255, 0.1); }

.mobile-menu a {
    display: block;
    padding: 18px 24px;
    color: var(--color-nav-text);
    font-size: 18px;
    font-weight: 500;
}

.mobile-menu a.submenu-item { padding-left: 48px; font-size: 16px; }

.mobile-menu a.active { background-color: rgba(255, 255, 255, 0.12); }

.mobile-menu .menu-footer {
    padding: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu .menu-footer a { padding: 8px 0; font-size: 16px; }

@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-utilities .nav-phone { display: none; }
    .hamburger { display: flex; }
}

/* ---------- Visual-first upgrade ---------- */
.hero {
    background-size: cover;
    background-position: center;
}

.card-icon {
    background: linear-gradient(135deg, var(--color-btn-primary) 0%, var(--color-border) 100%);
}

.card-icon svg {
    width: 26px;
    height: 26px;
    color: #ffffff;
}

.content-photo {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    margin: 8px 0 24px;
    display: block;
}

.card-photo {
    width: 100%;
    max-height: 240px;
    object-fit: cover;
    border-radius: 6px;
    margin-top: 16px;
    display: block;
}

.infographic {
    width: 100%;
    height: auto;
    margin: 8px 0 32px;
    border-radius: 14px;
    box-shadow: var(--shadow-light);
    display: block;
}

[data-theme="dark"] .infographic {
    box-shadow: 0 0 0 1px var(--color-border);
}

/* Fix 2026-10-07: secondary buttons inside light cards were white-on-white (invisible).
   Use the theme's secondary button color when the button sits in a card. */
.card .btn-secondary {
    color: var(--color-btn-secondary);
    border-color: var(--color-btn-secondary);
}
.card .btn-secondary:hover {
    background-color: var(--color-btn-secondary);
    color: #ffffff;
}

/* Leadership team headshots (added 2026-10-07) */
.team-photo {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    object-position: center top;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}