:root {
            --primary: #ffc000;
            --secondary: #425d60;
            --accent: #858086;
            --light: #f8f9fa;
            --dark: #2a3b3d;
            --white: #ffffff;
            --gray: #e9ecef;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Roboto', sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

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

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--secondary);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        header.scrolled {
            padding: 5px 0;
            background-color: rgba(255, 255, 255, 0.98);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            text-decoration: none;
        }

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

        .logo i {
            margin-right: 10px;
            color: var(--primary);
        }

        nav ul {
            display: flex;
            list-style: none;
        }

        nav ul li {
            margin-left: 30px;
        }

        nav ul li a {
            text-decoration: none;
            color: var(--secondary);
            font-weight: 500;
            font-size: 1rem;
            transition: all 0.3s ease;
            position: relative;
            padding: 5px 0;
        }

        nav ul li a:hover {
            color: var(--primary);
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width 0.3s ease;
        }

        nav ul li a:hover::after {
            width: 100%;
        }

        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            background: linear-gradient(rgba(66, 93, 96, 0.8), rgba(66, 93, 96, 0.9)), url('https://images.unsplash.com/photo-1621905252507-b35492cc74b4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2069&q=80');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            display: flex;
            align-items: center;
            color: var(--white);
            text-align: center;
            padding-top: 80px;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            animation: fadeInUp 1s ease;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--white);
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 40px;
        }

        .btn {
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary), #ffd54f);
            color: var(--dark);
            box-shadow: 0 4px 15px rgba(255, 192, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 192, 0, 0.4);
        }

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

        .btn-secondary:hover {
            background: var(--white);
            color: var(--secondary);
            transform: translateY(-3px);
        }

        /* Sections Common Styling */
        section {
            padding: 100px 0;
        }

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

        .section-title h2 {
            font-size: 2.5rem;
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        /* Services Section */
        .services {
            background-color: var(--gray);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .service-icon {
            height: 200px;
            background: linear-gradient(135deg, var(--secondary), #5a7a7d);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 4rem;
        }

        .solar-icon {
            background: linear-gradient(135deg, var(--primary), #ffd54f);
        }

        .service-content {
            padding: 30px;
        }

        .service-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--secondary);
        }

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

        .service-list {
            list-style: none;
            margin-top: 15px;
        }

        .service-list li {
            margin-bottom: 8px;
            padding-left: 25px;
            position: relative;
        }

        .service-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* About Section */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--secondary);
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--accent);
        }

        .about-image {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            height: 400px;
            background: url('https://images.unsplash.com/photo-1621905251189-08b45d6a269e?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
        }

        .values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .value-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--white);
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border-top: 4px solid var(--primary);
            transition: all 0.3s ease;
        }

        .value-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }

        .value-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .value-card h4 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

        /* Why Us Section */
        .why-us {
            background: linear-gradient(135deg, rgba(255, 192, 0, 0.05), rgba(66, 93, 96, 0.05));
        }

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

        .why-us-card {
            background: var(--white);
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border-left: 4px solid var(--primary);
        }

        .why-us-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }

        .why-us-card h3 {
            display: flex;
            align-items: center;
            font-size: 1.4rem;
            margin-bottom: 15px;
        }

        .why-us-card i {
            margin-right: 10px;
            color: var(--primary);
        }

        .clients {
            margin-top: 80px;
            text-align: center;
        }

        .clients-logos {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 40px;
        }

        .client-logo {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            opacity: 0.7;
            transition: all 0.3s ease;
            padding: 10px 20px;
            background: var(--white);
            border-radius: 5px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }

        .client-logo:hover {
            opacity: 1;
            color: var(--secondary);
            transform: translateY(-3px);
        }

        /* Contact Section */
        .contact-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

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

        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .contact-item i {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), #ffd54f);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark);
            font-size: 1.2rem;
            margin-right: 15px;
        }

        .contact-form {
            background: var(--white);
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--secondary);
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 192, 0, 0.2);
        }

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

        /* Footer */
        footer {
            background: linear-gradient(135deg, var(--secondary), #2a3b3d);
            color: var(--white);
            padding: 70px 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--white);
        }

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

        .footer-about p {
            margin-bottom: 20px;
            opacity: 0.8;
        }

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

        .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }

        .footer-links h4, .footer-contact h4 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            color: var(--white);
            position: relative;
            padding-bottom: 10px;
        }

        .footer-links h4::after, .footer-contact h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--primary);
        }

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

        .footer-links ul li {
            margin-bottom: 12px;
        }

        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .footer-links ul li a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .footer-contact p {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            opacity: 0.8;
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            opacity: 0.7;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive Styles */
        @media (max-width: 992px) {
            .about-content, .contact-container {
                grid-template-columns: 1fr;
            }
            
            .about-image {
                height: 300px;
                order: -1;
            }
            
            .hero h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background: var(--white);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
                transition: all 0.5s ease;
                padding: 20px;
            }
            
            nav.active {
                left: 0;
            }
            
            nav ul {
                flex-direction: column;
            }
            
            nav ul li {
                margin: 10px 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            
            .hero h1 {
                font-size: 2.3rem;
            }
            
            section {
                padding: 70px 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
        }

        @media (max-width: 576px) {
            .services-grid, .values-grid, .why-us-grid {
                grid-template-columns: 1fr;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .service-icon {
                height: 150px;
                font-size: 3rem;
            }
        }