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

        body {
            font-family: 'Inter', 'Arial', sans-serif;
            line-height: 1.7;
            color: #2c2c2c;
            background-color: #fefefe;
        }

        /* Header V1 Style with V4 Polish */
        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 1.2rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 87, 51, 0.1);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 2rem;
        }

        .logo {
          width: 200px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
        }
        .logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: left center;
    display: block;
}

/* Versi贸n responsive del logo */
@media (max-width: 768px) {
    .logo {
        width: 150px;
        height: 37.5px;
    }
    
    .logo img {
        width: 150px;
        height: 37.5px;
    }
}

/* Hover effect opcional */
.logo img:hover {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}


        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-menu a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .nav-menu a:hover {
            color: #ff5733;
        }

        .cta-button {
            background: #ff5733;
            color: white;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            font-size: 0.9rem;
        }

        .cta-button:hover {
            background: #df4c2d;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 87, 51, 0.3);
        }

        /* Hero Section - NARANJA */
        .hero {
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            padding: 140px 0 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 87, 51, 0.85);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
            z-index: 1;
        }

        .hero-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }

        .hero .tagline {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1.5rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            font-weight: 800;
            line-height: 1.1;
            color: white;
            letter-spacing: -1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .hero .subtitle {
            font-size: 1.4rem;
            margin-bottom: 2rem;
            color: white;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            font-weight: 600;
            opacity: 0.95;
        }

        .hero .description {
            font-size: 1.1rem;
            margin-bottom: 2rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .hero .highlight {
            color: white;
            font-weight: 700;
            text-shadow: 0 1px 2px rgba(0,0,0,0.1);
        }

        /* About Section - GRIS */
        .about-section {
            padding: 100px 0;
            background: #e9ecef;
        }

        .about-container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 2rem;
            text-align: center;
        }

        .about-section h2 {
            font-size: 2.8rem;
            margin-bottom: 2rem;
            color: #1a1a1a;
            font-weight: 700;
        }

        .about-section p {
            font-size: 1.2rem;
            color: #555;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .about-section .highlight {
            color: #ff5733;
            font-weight: 600;
        }

        /* Case Study Section - BLANCA */
        .case-study-section {
            padding: 100px 0;
            background: white;
        }

        .case-study-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .case-study-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .case-study-text h2 {
            font-size: 2.2rem;
            margin-bottom: 2rem;
            color: #1a1a1a;
            font-weight: 700;
            line-height: 1.3;
        }

        .case-study-text p {
            font-size: 1.1rem;
            color: #555;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .case-study-text strong {
            color: #ff5733;
            font-weight: 700;
        }

        .case-study-button {
            display: inline-block;
            background: #ff5733;
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            font-size: 1rem;
            letter-spacing: 0.5px;
            margin-top: 1rem;
        }

        .case-study-button:hover {
            background: #df4c2d;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 87, 51, 0.3);
        }

        .case-study-images {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        .image-placeholder {
            background: #e9ecef;
            border: 2px dashed #adb5bd;
            border-radius: 12px;
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #6c757d;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .image-placeholder:hover {
            border-color: #ff5733;
            background: #fff5f2;
            color: #ff5733;
        }

        .image-1 {
            height: 180px;
        }

        .image-2 {
            height: 180px;
        }

        /* Contact Form Section - NARANJA - Una Columna */
        .contact-form-section {
            padding: 100px 0;
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }

        .contact-form-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="form-dots" width="25" height="25" patternUnits="userSpaceOnUse"><circle cx="12.5" cy="12.5" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23form-dots)"/></svg>');
            z-index: 1;
        }

        .contact-form-container {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }

        .contact-form-content {
            display: flex;
            flex-direction: column;
            gap: 3rem;
            text-align: center;
        }

        .contact-text h2 {
            font-size: 2.8rem;
            margin-bottom: 2rem;
            color: white;
            font-weight: 700;
            line-height: 1.3;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .contact-text p {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.8;
        }

        .contact-form-wrapper {
            background: white;
            border-radius: 25px;
            padding: 3rem;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            position: relative;
            overflow: hidden;
        }

        .contact-form-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, #ff5733, #df4c2d, #ff5733);
            background-size: 200% 100%;
            animation: gradientShift 3s ease-in-out infinite;
        }

        @keyframes gradientShift {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        .contact-form h3 {
            font-size: 1.8rem;
            margin-bottom: 2rem;
            color: #ff5733;
            font-weight: 700;
            text-align: center;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group input {
            width: 100%;
            padding: 1.2rem 1.5rem;
            border: 2px solid #e9ecef;
            border-radius: 12px;
            font-size: 1rem;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s ease;
            background: #f8f9fa;
        }

        .form-group input:focus {
            outline: none;
            border-color: #ff5733;
            background: white;
            box-shadow: 0 0 0 3px rgba(255, 87, 51, 0.1);
            transform: translateY(-2px);
        }

        .form-group input::placeholder {
            color: #adb5bd;
            font-weight: 500;
        }

        .form-submit-button {
            width: 100%;
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            padding: 1.5rem;
            border: none;
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.4s ease;
            margin-top: 1rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            position: relative;
            overflow: hidden;
        }

        .form-submit-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: left 0.6s ease;
        }

        .form-submit-button:hover::before {
            left: 100%;
        }

        .form-submit-button:hover {
            background: linear-gradient(135deg, #df4c2d 0%, #c23616 100%);
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 87, 51, 0.4);
        }

        .form-submit-button:active {
            transform: translateY(-1px);
        }

        /* Services Section - GRIS */
        .services {
            padding: 100px 0;
            background: #e9ecef;
        }

        .services-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .services-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .services h2 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            color: #1a1a1a;
            font-weight: 700;
        }

        .services-header p {
            font-size: 1.2rem;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .service-card {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            border: 2px solid #f0f0f0;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #ff5733, #df4c2d);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 60px rgba(255, 87, 51, 0.15);
        }

        .service-card.featured {
            border: 3px solid #ff5733;
            background: linear-gradient(135deg, #fff5f2 0%, #ffffff 100%);
            transform: scale(1.05);
            box-shadow: 0 15px 50px rgba(255, 87, 51, 0.2);
        }

        .service-card.featured::before {
            transform: scaleX(1);
        }

        .service-card.featured::after {
            content: "M脕S POPULAR";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: #ff5733;
            color: white;
            padding: 0.6rem 1.5rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            box-shadow: 0 4px 15px rgba(255, 87, 51, 0.3);
        }

        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #1a1a1a;
            font-weight: 700;
        }

        .service-card.featured h3 {
            color: #ff5733;
        }

        .service-card .price {
            font-size: 2.5rem;
            font-weight: 800;
            color: #ff5733;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
        }

        .service-card p {
            margin-bottom: 2rem;
            color: #555;
            line-height: 1.7;
        }

        .service-button {
            width: 100%;
            padding: 1.2rem;
            border: 2px solid #ff5733;
            background: white;
            color: #ff5733;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }

        .service-button:hover, .service-card.featured .service-button {
            background: #ff5733;
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 87, 51, 0.3);
        }

        .service-card.featured .service-button:hover {
            background: #df4c2d;
        }

        /* CTA Section - BLANCA */
        .cta-section {
            background: white;
            color: #1a1a1a;
            padding: 80px 0;
            text-align: center;
            position: relative;
            border-top: 1px solid #e9ecef;
            border-bottom: 1px solid #e9ecef;
        }

        .cta-section h2 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            font-weight: 800;
            color: #1a1a1a;
        }

        .cta-section p {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            color: #666;
        }

        .cta-section .cta-button {
            background: #ff5733;
            color: white;
            font-size: 1.1rem;
            padding: 1.2rem 2.5rem;
        }

        .cta-section .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 87, 51, 0.3);
        }

        /* Featured Diagnostic Section - NARANJA */
        .diagnostic-section {
            padding: 120px 0;
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }

        .diagnostic-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="premium-dots" width="30" height="30" patternUnits="userSpaceOnUse"><circle cx="15" cy="15" r="1.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23premium-dots)"/></svg>');
            z-index: 1;
        }

        .diagnostic-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
            z-index: 1;
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .diagnostic-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }

        .diagnostic-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 5rem;
            align-items: center;
        }

        .diagnostic-text h2 {
            font-size: 3.2rem;
            margin-bottom: 2rem;
            color: white;
            font-weight: 800;
            line-height: 1.2;
            text-shadow: 0 4px 8px rgba(0,0,0,0.3);
            letter-spacing: -1px;
        }

        .diagnostic-subtitle {
            font-size: 1.6rem;
            margin-bottom: 2rem;
            color: white;
            font-weight: 700;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .diagnostic-text p {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .diagnostic-text strong {
            color: white;
            font-weight: 700;
            text-shadow: 0 1px 2px rgba(0,0,0,0.2);
        }

        .diagnostic-button {
            display: inline-flex;
            align-items: center;
            gap: 1rem;
            background: white;
            color: #ff5733;
            padding: 1.5rem 3rem;
            border: none;
            border-radius: 60px;
            font-weight: 800;
            cursor: pointer;
            transition: all 0.4s ease;
            text-decoration: none;
            font-size: 1.2rem;
            letter-spacing: 1px;
            margin-top: 1.5rem;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
            text-transform: uppercase;
            position: relative;
            overflow: hidden;
        }

        .diagnostic-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,87,51,0.1), transparent);
            transition: left 0.6s ease;
        }

        .diagnostic-button:hover::before {
            left: 100%;
        }

        .diagnostic-button:hover {
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
            background: #f8f9fa;
        }

        .button-icon {
            font-size: 1.4rem;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateX(0); }
            40% { transform: translateX(-5px); }
            60% { transform: translateX(-3px); }
        }

        .diagnostic-images {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            position: relative;
        }

        .diagnostic-img-1, .diagnostic-img-2 {
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.4s ease;
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .diagnostic-img-1:hover, .diagnostic-img-2:hover {
            border-color: white;
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-8px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        }

        .diagnostic-img-1 {
            transform: rotate(-2deg);
        }

        .diagnostic-img-2 {
            transform: rotate(2deg);
        }

        /* Footer - NEGRO */
        .footer {
            background: #1a1a1a;
            color: white;
            padding: 60px 0 40px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            text-align: center;
        }

        .footer h3 {
            color: #ff5733;
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
            font-weight: 600;
        }

        .footer p {
            margin-bottom: 1.5rem;
            opacity: 0.8;
            line-height: 1.7;
            color: #ccc;
        }

        .footer .copyright {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid #333;
            opacity: 0.6;
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero .subtitle {
                font-size: 1.1rem;
            }

            .case-study-content {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .case-study-text h2 {
                font-size: 1.8rem;
            }

            .contact-form-content {
                gap: 2rem;
            }

            .contact-text h2 {
                font-size: 2.2rem;
            }

            .contact-text p {
                font-size: 1.1rem;
            }

            .contact-form-wrapper {
                padding: 2rem;
            }

            .contact-form h3 {
                font-size: 1.5rem;
            }

            .diagnostic-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .diagnostic-text h2 {
                font-size: 2.2rem;
            }

            .diagnostic-subtitle {
                font-size: 1.3rem;
            }

            .diagnostic-text p {
                font-size: 1.1rem;
            }

            .diagnostic-button {
                font-size: 1rem;
                padding: 1.2rem 2rem;
            }

            .diagnostic-img-1, .diagnostic-img-2 {
                transform: none;
                height: 180px;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .service-card.featured {
                transform: none;
            }

            .nav-container {
                padding: 0 1.5rem;
            }

            .hero-container, .services-container, .about-container, .footer-container, .case-study-container, .diagnostic-container, .contact-form-container {
                padding: 0 1.5rem;
            }
        }
        
        /* ===================================== */
        /* ESTILOS ESPECÍFICOS PARA DIAGNÓSTICO */
        /* ===================================== */
        
        .diagnostic-page {
            padding-top: 120px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
        }
        
        .diagnostic-hero {
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .diagnostic-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="hero-dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23hero-dots)"/></svg>');
            z-index: 1;
        }
        
        .diagnostic-hero-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }
        
        .diagnostic-hero h1 {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            font-weight: 800;
            line-height: 1.2;
        }
        
        .diagnostic-hero p {
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            opacity: 0.9;
            line-height: 1.6;
        }
        
        .diagnostic-form-container {
            max-width: 900px;
            margin: -50px auto 0;
            padding: 0 2rem;
            position: relative;
            z-index: 3;
        }
        
        .diagnostic-form {
            background: white;
            border-radius: 25px;
            padding: 3rem;
            box-shadow: 0 20px 60px rgba(0,0,0,0.1);
            margin-bottom: 4rem;
        }
        
        .form-section {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid #e9ecef;
        }
        
        .form-section:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        
        .section-title {
            font-size: 1.8rem;
            color: #ff5733;
            margin-bottom: 1.5rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .section-number {
            background: #ff5733;
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.8rem;
            font-weight: 600;
            color: #333;
            font-size: 1rem;
            line-height: 1.4;
        }
        
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 1rem 1.2rem;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s ease;
            background: #f8f9fa;
            box-sizing: border-box;
        }
        
        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #ff5733;
            background: white;
            box-shadow: 0 0 0 3px rgba(255, 87, 51, 0.1);
        }
        
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        
        .radio-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 0.5rem;
        }
        
        .radio-option {
            position: relative;
        }
        
        .radio-option input[type="radio"] {
            position: absolute;
            opacity: 0;
            width: 100%;
            height: 100%;
            margin: 0;
            cursor: pointer;
        }
        
        .radio-option label {
            display: block;
            padding: 1rem;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            font-weight: 500;
            background: #f8f9fa;
            margin: 0;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .radio-option input[type="radio"]:checked + label {
            border-color: #ff5733;
            background: #fff5f2;
            color: #ff5733;
            font-weight: 600;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(255, 87, 51, 0.2);
        }
        
        .radio-option input[type="radio"]:focus + label {
            outline: 2px solid #007bff;
            outline-offset: 2px;
        }
        
        .checkbox-group {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 0.5rem;
        }
        
        .checkbox-option {
            position: relative;
        }
        
        .checkbox-option input[type="checkbox"] {
            position: absolute;
            opacity: 0;
            width: 100%;
            height: 100%;
            margin: 0;
            cursor: pointer;
        }
        
        .checkbox-option label {
            display: block;
            padding: 1rem;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            font-weight: 500;
            background: #f8f9fa;
            margin: 0;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .checkbox-option input[type="checkbox"]:checked + label {
            border-color: #ff5733;
            background: #fff5f2;
            color: #ff5733;
            font-weight: 600;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(255, 87, 51, 0.2);
        }
        
        .checkbox-option input[type="checkbox"]:focus + label {
            outline: 2px solid #007bff;
            outline-offset: 2px;
        }
        
        .submit-section {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #e9ecef;
            margin-top: 3rem;
        }
        
        .submit-button {
            background: linear-gradient(135deg, #ff5733 0%, #df4c2d 100%);
            color: white;
            padding: 1.5rem 3rem;
            border: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.4s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            box-shadow: 0 8px 25px rgba(255, 87, 51, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .submit-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: left 0.6s ease;
        }
        
        .submit-button:hover::before {
            left: 100%;
        }
        
        .submit-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 87, 51, 0.4);
        }
        
        .submit-button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }
        
        .submit-button:disabled:hover {
            transform: none;
            box-shadow: 0 8px 25px rgba(255, 87, 51, 0.3);
        }
        
        .progress-bar {
            background: #e9ecef;
            height: 8px;
            border-radius: 4px;
            margin-bottom: 2rem;
            overflow: hidden;
            position: relative;
        }
        
        .progress-fill {
            background: linear-gradient(90deg, #ff5733, #df4c2d);
            height: 100%;
            width: 0%;
            transition: width 0.4s ease;
            border-radius: 4px;
            position: relative;
        }
        
        .progress-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            animation: shimmer 2s infinite;
        }
        
        @keyframes shimmer {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        }
        
        .diagnostic-info {
            background: #fff5f2;
            border: 1px solid #ffebee;
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            border-left: 4px solid #ff5733;
        }
        
        .diagnostic-info h3 {
            color: #ff5733;
            margin-bottom: 1rem;
            font-size: 1.2rem;
            font-weight: 700;
        }
        
        .diagnostic-info p {
            color: #666;
            line-height: 1.6;
            margin: 0;
        }
        
        .required {
            color: #ff5733;
            font-weight: 700;
        }
        
        /* Loading states */
        .form-loading {
            position: relative;
        }
        
        .form-loading::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255,255,255,0.8);
            z-index: 1000;
            border-radius: 25px;
        }
        
        .form-loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 40px;
            height: 40px;
            margin: -20px 0 0 -20px;
            border: 4px solid #f3f3f3;
            border-top: 4px solid #ff5733;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            z-index: 1001;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        /* Error states */
        .form-error {
            background: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            display: none;
        }
        
        .field-error {
            color: #dc3545;
            font-size: 0.875rem;
            margin-top: 5px;
            display: block;
        }
        
        .form-group input.error,
        .form-group select.error,
        .form-group textarea.error {
            border-color: #dc3545;
            background-color: #fff5f5;
        }
        
        /* Success states */
        .form-success {
            background: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            display: none;
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .diagnostic-hero h1 {
                font-size: 2.2rem;
            }
            
            .diagnostic-hero p {
                font-size: 1.1rem;
            }
            
            .diagnostic-form {
                padding: 2rem;
                margin: -30px auto 0;
            }
            
            .radio-group,
            .checkbox-group {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 1.5rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            
            .section-title .section-number {
                align-self: flex-start;
            }
            
            .submit-button {
                padding: 1.2rem 2rem;
                font-size: 1rem;
                width: 100%;
                max-width: 300px;
            }
            
            .diagnostic-form-container {
                padding: 0 1rem;
            }
        }
        
        @media (max-width: 480px) {
            .diagnostic-hero {
                padding: 60px 0;
            }
            
            .diagnostic-hero h1 {
                font-size: 1.8rem;
            }
            
            .diagnostic-form {
                padding: 1.5rem;
                border-radius: 15px;
            }
            
            .radio-option label,
            .checkbox-option label {
                padding: 0.8rem;
                font-size: 0.9rem;
            }
        }
        
        /* Print styles */
        @media print {
            .diagnostic-page {
                background: white;
            }
            
            .diagnostic-hero,
            .footer {
                display: none;
            }
        }
        
        /* High contrast mode */
        @media (prefers-contrast: high) {
            .radio-option label,
            .checkbox-option label {
                border-width: 3px;
            }
            
            .radio-option input[type="radio"]:checked + label,
            .checkbox-option input[type="checkbox"]:checked + label {
                border-width: 3px;
            }
        }
        
        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }