/* --- CSS VARIABLES & RESET --- */
        :root {
            --primary: #2c3e50;
            --secondary: #e67e22;
            --accent: #f39c12;
            --light: #ecf0f1;
            --dark: #212121;
            --text-gray: #555;
            --white: #ffffff;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Open Sans', sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background-color: #f9f9f9;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        /* --- UTILITIES --- */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .text-center { text-align: center; }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--secondary);
            color: var(--white);
            border: none;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
        }

        .btn:hover {
            background: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

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

        .btn-outline:hover {
            background: var(--white);
            color: var(--secondary);
        }

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            text-align: center;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--secondary);
            margin: 15px auto;
        }

        .subtitle {
            text-align: center;
            color: var(--text-gray);
            margin-bottom: 50px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* --- HEADER --- */
        header {
            background: var(--white);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }

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

        .nav-links {
            display: flex;
            gap: 25px;
        }

        .nav-links a {
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            transition: var(--transition);
            color: var(--primary);
        }

        .nav-links a:hover { color: var(--secondary); }

        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* --- HERO --- */
        .hero {
            background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('../images/hero.jpg');
            background-size: cover;
            background-position: center;
            height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            text-align: center;
        }

        .hero-content h1 {
            font-size: 3.5rem;
            color: var(--white);
            margin-bottom: 1rem;
        }

        .hero-content p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 15px;
            justify-content: center;
        }

        /* --- ABOUT --- */
        .about {
            background: var(--white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-img {
            width: 100%;
            height: 400px;
            background: #ddd;
            background-image: url('../images/about.jpg');
            background-size: cover;
            background-position: center;
            border-radius: 10px;
            box-shadow: 10px 10px 0 var(--secondary);
        }

        /* --- SERVICES --- */
        .services {
            background: var(--light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--white);
            padding: 30px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border-bottom: 3px solid var(--secondary);
        }

        .service-icon {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 15px;
        }

        .service-card h4 { margin-bottom: 10px; }
        .service-card p { font-size: 0.9rem; color: var(--text-gray); }

        /* --- WHY CHOOSE US --- */
        .why-us {
            background: var(--white);
        }

        .features-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .feature-item {
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }

        .feature-icon {
            background: var(--secondary);
            color: var(--white);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* --- HOME WARRANTY --- */
        .warranty {
            background: linear-gradient(135deg, var(--primary) 0%, #34495e 100%);
            color: var(--white);
            text-align: center;
        }

        .warranty h2, .warranty p { color: var(--white); }
        .warranty .subtitle { color: #bdc3c7; }
        .warranty-badge {
            background: var(--secondary);
            padding: 20px;
            border-radius: 10px;
            display: inline-block;
            font-weight: bold;
            font-size: 1.2rem;
            margin-top: 20px;
        }

        /* --- TESTIMONIALS --- */
        .testimonials {
            background: var(--light);
        }

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

        .testimonial-card {
            background: var(--white);
            padding: 30px;
            border-radius: 8px;
            position: relative;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }

        .testimonial-card i {
            color: var(--accent);
            font-size: 2rem;
            margin-bottom: 15px;
        }

        .client-info {
            display: flex;
            align-items: center;
            margin-top: 20px;
        }

        .client-avatar {
            width: 50px;
            height: 50px;
            background: #ccc;
            border-radius: 50%;
            margin-right: 15px;
            background-color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        /* --- QUOTE & CONTACT FORM --- */
        .quote-section {
            background: var(--white);
        }

        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background: #f4f4f4;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

        .form-group.full { grid-column: 1 / -1; }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        input, select, textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-family: inherit;
            font-size: 1rem;
        }

        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: var(--secondary);
        }

        .form-message {
            padding: 15px;
            margin-top: 20px;
            border-radius: 5px;
            display: none;
            font-weight: 600;
            text-align: center;
        }

        .form-message.success {
            background: #d4edda;
            color: #155724;
            display: block;
        }

        .form-message.error {
            background: #f8d7da;
            color: #721c24;
            display: block;
        }

        /* --- NEWSLETTER & MODULES --- */
        .modules-section {
            background: var(--primary);
            color: var(--white);
        }

        .modules-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }

        .module-box {
            background: rgba(255,255,255,0.05);
            padding: 30px;
            border-radius: 8px;
        }

        .module-box h3 { color: var(--secondary); border-bottom: 1px solid rgba(255,255,255,0.2); padding-bottom: 10px; }
        
        .legal-link {
            display: block;
            color: var(--white);
            margin-bottom: 10px;
            text-decoration: underline;
            cursor: pointer;
        }
        
        .legal-link:hover { color: var(--accent); }

        .newsletter-form input {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            color: var(--white);
            margin-bottom: 10px;
        }
        
        .newsletter-form input::placeholder { color: #bbb; }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            margin-bottom: 15px;
        }

        .checkbox-group input { width: auto; }

        /* --- FOOTER --- */
        footer {
            background: var(--dark);
            color: #bdc3c7;
            padding: 60px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 { color: var(--white); margin-bottom: 20px; }
        .footer-col p { margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
        
        .social-links { display: flex; gap: 15px; margin-top: 20px; }
        .social-links a {
            width: 35px; height: 35px;
            background: rgba(255,255,255,0.1);
            display: flex; align-items: center; justify-content: center;
            border-radius: 50%; transition: var(--transition);
        }
        .social-links a:hover { background: var(--secondary); color: var(--white); }

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

        /* --- MODAL --- */
        .modal-overlay {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .modal-overlay.active {
            opacity: 1;
            pointer-events: all;
        }

        .modal-content {
            background: var(--white);
            padding: 40px;
            border-radius: 8px;
            max-width: 600px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            position: relative;
        }

        .close-modal {
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-gray);
        }

        .modal-content h3 { color: var(--primary); margin-bottom: 15px; }
        .modal-content p { margin-bottom: 15px; color: #555; }

        /* --- RESPONSIVE --- */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background: var(--white);
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }

            .nav-links.active { display: flex; }
            .mobile-toggle { display: block; }
            
            .hero-content h1 { font-size: 2.5rem; }
            .about-grid, .form-grid { grid-template-columns: 1fr; }
            
            .section-title { font-size: 2rem; }
        }