/* CSS Variables for easy customization - GREEN THEME */
        :root {
            /* Colors - Professional Engineering Palette - GREEN VERSION */
            --primary: #1B5E20;      /* Deep green - professional, trustworthy */
            --primary-dark: #0D3B13;
            --primary-light: #43A047;
            --accent: #FFA000;       /* Amber accent for highlights */
            --accent-dark: #FF8F00;
            --neutral-dark: #2D3748;
            --neutral: #4A5568;
            --neutral-light: #A0AEC0;
            --neutral-lighter: #EDF2F7;
            --white: #FFFFFF;
            
            /* Typography */
            --font-heading: 'Montserrat', sans-serif;
            --font-body: 'Roboto', sans-serif;
            
            /* Spacing */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 8rem;
            
            /* Effects */
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
            --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
            --radius: 6px;
            
            /* Transitions */
            --transition: all 0.3s ease;
        }

        /* Reset and Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            color: var(--neutral-dark);
            line-height: 1.6;
            overflow-x: hidden;
            background-color: var(--white);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
            color: var(--primary-dark);
        }

        p {
            margin-bottom: var(--spacing-sm);
            font-size: 1.05rem;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        section {
            padding: var(--spacing-lg) 0;
            scroll-margin-top: 80px;
        }

        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-md);
            position: relative;
            padding-bottom: var(--spacing-sm);
            opacity: 0;
            transform: translateY(20px);
        }

        .section-title.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: var(--spacing-sm) auto;
            border-radius: 2px;
        }

        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            border: none;
            font-family: var(--font-body);
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

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

        .btn-secondary:hover {
            background-color: var(--primary);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* Header Styles */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: var(--spacing-sm) 0;
            background-color: var(--white);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo{
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo img{
            height: 40px;
        }
        .logo h3{
            margin: 0;
            font-size: 20px;
        }

        .nav-list {
            display: flex;
            list-style: none;
            gap: var(--spacing-md);
        }

        .nav-link {
            color: var(--neutral-dark);
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
        }

        /* Hero Section with Video Background */
        .hero {
            padding-top: 8rem;
            padding-bottom: 4rem;
            background: linear-gradient(rgba(13, 59, 19, 0), rgba(13, 59, 19, 0.7));
            color: var(--white);
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .video-background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: -1;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.5;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            opacity: 0;
            transform: translateY(30px);
        }

        .hero-content.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 1s ease, transform 1s ease;
        }

        .hero-title {
            font-size: 3.5rem;
            margin-bottom: var(--spacing-md);
            color: var(--white);
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-lg);
            font-weight: 400;
            opacity: 0.9;
        }

        .hero-cta {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Overview Section */
        .overview {
            background-color: var(--white);
        }

        .overview-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            opacity: 0;
            transform: translateY(20px);
        }

        .overview-content.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        /* Mission & Vision */
        .mission-vision {
            background-color: var(--neutral-lighter);
        }

        .mv-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
        }

        .mv-card {
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
            border-top: 4px solid var(--primary);
            opacity: 0;
            transform: translateY(20px);
        }

        .mv-card.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .mv-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .mv-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        .mv-title {
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        /* Core Services - Horizontal Scrolling for Desktop */
        .services {
            overflow: hidden;
        }

        .services-container {
            position: relative;
        }

        .services-grid {
            display: flex;
            gap: var(--spacing-md);
            overflow-x:hidden;
            flex-wrap: nowrap;
        }


        .service-card {
            background-color: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border-left: 4px solid var(--primary);
            min-width: 300px;
            opacity: 0;
            transform: translateX(-20px);
        }

        .service-card.animate {
            opacity: 1;
            transform: translateX(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .service-card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-md);
        }

        .service-content {
            padding: var(--spacing-md);
        }

        .service-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        .service-title {
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        /* Industries Served - Horizontal Scrolling for Desktop */
        .industries {
            background-color: var(--neutral-lighter);
            overflow: hidden;
        }

        .industries-container {
            position: relative;
        }

        .industries-grid {
            display: flex;
            gap: var(--spacing-md);
            overflow-x: hidden;
            flex-wrap: nowrap;
        }
        .industry-card {
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
            min-width: 250px;
            opacity: 0;
            transform: translateX(20px);
        }

        .industry-card.animate {
            opacity: 1;
            transform: translateX(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .industry-card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-md);
        }

        .industry-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        /* Expertise Section */
        .expertise-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-md);
            justify-content: center;
            opacity: 0;
            transform: translateY(20px);
        }

        .expertise-tabs.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .expertise-tab {
            padding: var(--spacing-xs) var(--spacing-sm);
            background-color: var(--neutral-lighter);
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }

        .expertise-tab.active {
            background-color: var(--primary);
            color: var(--white);
        }

        .expertise-content {
            display: none;
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            opacity: 0;
            transform: translateY(20px);
        }

        .expertise-content.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .expertise-content.active {
            display: block;
        }

        .expertise-list {
            list-style: none;
            columns: 2;
            column-gap: var(--spacing-md);
        }
/* Expertise bullets container */
.expertise-content ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

/* Each bullet */
.expertise-content ul li {
    background: #f5f9f6; /* light background */
    padding: 12px 14px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    color: green;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

/* Add icon before bullet */
.expertise-content ul li::before {
    color: var(--primary-color);
    font-weight: bold;
}

/* Hover effect */
.expertise-content ul li:hover {
    background: #e9f6ef;
    transform: translateY(-3px);
}

/* Responsive for tablets/mobiles */
@media (max-width: 1024px) {
    .expertise-content ul {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .expertise-content ul {
        grid-template-columns: 1fr;
    }
}

        @media (max-width: 768px) {
            .expertise-list {
                columns: 1;
            }
        }

        .expertise-item {
            display: flex;
            align-items: center;
            margin-bottom: var(--spacing-sm);
            break-inside: avoid;
            padding: var(--spacing-xs);
            border-radius: var(--radius);
            transition: var(--transition);
        }

        .expertise-item:hover {
            background-color: var(--neutral-lighter);
            transform: translateX(5px);
        }

        .expertise-icon {
            margin-right: var(--spacing-sm);
            color: var(--primary);
            min-width: 24px;
            font-size: 1.2rem;
            background: var(--neutral-lighter);
            padding: 8px;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Approach Section */
        .approach {
            background-color: var(--neutral-lighter);
        }

        .approach-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-md);
        }

        .step-card {
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
            opacity: 0;
            transform: translateY(20px);
        }

        .step-card.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .step-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            line-height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--white);
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
        }

        .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        /* Projects Section */
        .projects {
            background-color: var(--white);
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
        }

        .project-card {
            background-color: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--neutral-lighter);
            opacity: 0;
            transform: translateY(20px);
        }

        .project-card.animate {
            opacity: 1;
            transform: translateY(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .project-info {
            padding: var(--spacing-md);
        }

        .project-title {
            color: var(--primary);
            margin-bottom: var(--spacing-sm);
        }

        /* Contact Section */
        .contact {
            background-color: var(--neutral-lighter);
        }

        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }

        @media (max-width: 768px) {
            .contact-container {
                grid-template-columns: 1fr;
            }
        }

        .contact-form {
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            opacity: 0;
            transform: translateX(-20px);
        }

        .contact-form.animate {
            opacity: 1;
            transform: translateX(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .form-group {
            margin-bottom: var(--spacing-sm);
        }

        .form-label {
            display: block;
            margin-bottom: var(--spacing-xs);
            font-weight: 500;
        }

        .form-input {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid var(--neutral-light);
            border-radius: var(--radius);
            font-family: var(--font-body);
            transition: var(--transition);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.1);
        }

        textarea.form-input {
            resize: none;
        }

        .contact-info {
            background-color: var(--white);
            padding: var(--spacing-md);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            height: fit-content;
            opacity: 0;
            transform: translateX(20px);
        }

        .contact-info.animate {
            opacity: 1;
            transform: translateX(0);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: var(--spacing-sm);
        }

        .contact-icon {
            margin-right: var(--spacing-sm);
            color: var(--primary);
            min-width: 20px;
        }

        .map-container {
            height: 300px;
            border-radius: var(--radius);
            overflow: hidden;
            margin-top: var(--spacing-md);
        }

        /* Footer */
        footer {
            background-color: var(--primary-dark);
            color: var(--white);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }

        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--spacing-md);
        }

        .footer-heading {
            color: var(--white);
            margin-bottom: var(--spacing-sm);
            position: relative;
            padding-bottom: var(--spacing-xs);
        }

        .footer-heading::after {
            content: '';
            display: block;
            width: 40px;
            height: 2px;
            background-color: var(--accent);
            margin-top: var(--spacing-xs);
        }

        .footer-links {
            list-style: none;
        }

        .footer-link {
            display: block;
            margin-bottom: var(--spacing-xs);
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }

        .footer-link:hover {
            color: var(--white);
            transform: translateX(5px);
        }

        .footer-bottom {
            text-align: center;
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }

        /* WhatsApp Float */
        .whatsapp-float {
            position: fixed;
            bottom: var(--spacing-md);
            right: var(--spacing-md);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: #25D366;
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            z-index: 99;
            transition: var(--transition);
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
        }

        .whatsapp-icon {
            font-size: 1.8rem;
        }

        /* Scroll Progress Bar */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            z-index: 1001;
            transition: width 0.2s ease;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.5rem;
            }
            
            section {
                padding: var(--spacing-md) 0;
            }


            .service-card,
            .industry-card {
                min-width: auto;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: var(--spacing-md);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            
            .nav-list.active {
                display: flex;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .hero-title {
                font-size: 2rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .hero-cta {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 250px;
            }

            .services-grid,
            .industries-grid {
                flex-direction: column;
            }

            .service-card,
            .industry-card {
                min-width: auto;
            }
        }

        @media (max-width: 480px) {
            
            .hero-title {
                font-size: 1.8rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .expertise-tabs {
                flex-direction: column;
            }
        }