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

        /* Optimize rendering performance */
        img, button, .service-card, .hero h1, .hero h2 {
            user-select: none;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
        }

        /* Hardware acceleration for smooth animations */
        .hero, .service-card, .about-image, .mobile-menu, .chat-toggle {
            will-change: transform;
            transform: translateZ(0);
            -webkit-transform: translateZ(0);
            -moz-transform: translateZ(0);
            -ms-transform: translateZ(0);
        }

        /* Optimize transitions for better performance */
        * {
            transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
        }
        
        body {
            font-family: 'Montserrat', sans-serif;
            line-height: 1.6;
            color: #1f2937;
            background-color: #f3f4f6;
        }

        body.menu-open {
            overflow: hidden;
        }

        body.modal-open {
            overflow: hidden;
        }

        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: #1f2937;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
            transition: background-color 0.3s ease, box-shadow 0.3s ease;
            will-change: background-color, box-shadow;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-right: 0;
            padding-left: 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            text-decoration: none;
            color: #1f2937;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            position: relative;
            left: 0;
            margin-left: 0;
            padding-left: 0;
        }

        .logo img {
            height: 40px;
            width: auto;
            user-select: none;
            -webkit-user-drag: none;
        }

        .logo:hover { 
            color: #6b7280; 
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            margin-left: auto;
            margin-right: 0;
        }

        .nav-menu a {
            color: #1f2937;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background-color: #6b7280;
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after { 
            width: 100%; 
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #1f2937;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1001;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            will-change: opacity, visibility;
        }

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

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

        .mobile-menu li { 
            margin: 2rem 0; 
        }

        .mobile-menu a {
            color: #1f2937;
            text-decoration: none;
            font-size: 2rem;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .mobile-menu a:hover { 
            color: #6b7280; 
        }

        .mobile-close {
            position: absolute;
            top: 2rem;
            right: 2rem;
            background: none;
            border: none;
            color: #1f2937;
            font-size: 2rem;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .nav-menu { 
                display: none; 
            }
            
            .mobile-menu-btn { 
                display: block;
                margin-right: 1.2rem;
            }
            }

            .mobile-menu { 
                display: flex; 
            }
        



        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }
        
        .service-hero {
            background: linear-gradient(135deg, rgba(75, 85, 99, 0.9) 0%, rgba(107, 114, 128, 0.8) 100%);
            color: white;
            padding: 0 4rem;
            text-align: center;
            margin-bottom: 3rem;
        }

        .service-hero h1 {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .service-hero p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        .service-content {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .service-text {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .service-text h2 {
            color: #1f2937;
            margin-bottom: 1.5rem;
            font-size: 2rem;
        }

        .service-text h3 {
            margin-top: 2rem; 
            margin-bottom: 1rem;
        }

        .service-text p {
            color: #4b5563;
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        .features-list {
            list-style: none;
            margin-top: 2rem;
        }

        .features-list li {
            padding: 1rem;
            margin-bottom: 1rem;
            background: rgba(107, 114, 128, 0.05);
            border-radius: 8px;
            border-left: 4px solid #6b7280;
            color: #374151;
        }

        .service-image {
            background: linear-gradient(135deg, rgba(75, 85, 99, 0.8), rgba(107, 114, 128, 0.8));
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 4rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
            margin-right: 20px;
        }

        .service-image img {
            width: 100%;
            height: auto;
            border-radius: 15px;
            z-index: 2;
            position: relative;
        }

        .service-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('../Imagenes/SECCION LADRILLOS.jpg') center/cover;
            opacity: 0.8;
            z-index: 1;
        }

        .specs-section {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            margin-bottom: 3rem;
        }

        .specs-section h3 {
            color: #1f2937;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }

        .specs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }

        .spec-item {
            padding: 1rem;
            background: rgba(107, 114, 128, 0.05);
            border-radius: 8px;
            border: 1px solid rgba(107, 114, 128, 0.1);
        }

        .spec-item h4 {
            color: #1f2937;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }

        .spec-item p {
            color: #6b7280;
            font-size: 0.9rem;
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(75, 85, 99, 0.95) 0%, rgba(107, 114, 128, 0.9) 100%);
            color: white;
            padding: 3rem;
            border-radius: 15px;
            text-align: center;
        }

        .cta-section h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .cta-section p {
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .cta-button {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 1rem 2rem;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .cta-button:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        
        @media (max-width: 768px) {
            .service-content { 
                grid-template-columns: 1fr; 
            }

            .service-hero h1 { 
                font-size: 2rem; 
            }
            .container { 
                padding: 1rem; 
            }
        }