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

:root {
    --primary-color: #1E293B;
    --secondary-color: #2F80D0;
    --accent-color: #EF4444;
    --success-color: #22C55E;
    --light-gray: #F5F7FA;
    --medium-gray: #E2E8F0;
    --dark-gray: #64748B;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --white: #FFFFFF;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--light-gray);
    -webkit-text-size-adjust: 100%;
}

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

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

/* Navigation */
nav {
    background: rgba(30, 41, 59, 0.98);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

nav.scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.language-switcher {
    display: flex;
    gap: 10px;
    margin-left: 20px;
}

.lang-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--secondary-color);
}

.lang-btn.active {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--white);
}

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

/* Hero Section */
.hero {
    color: var(--white);
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    height: 700px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.45) 0%, rgba(15, 23, 42, 0.55) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(49, 130, 206, 0.15) 0%, transparent 50%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
    text-align: center;
}

.hero-image-showcase {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-product-img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

.hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    position: relative;
    z-index: 1;
    margin-bottom: 25px;
}

.btn {
    padding: 15px 40px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: #2F80D0;
    color: #ffffff;
    border: 2px solid #2F80D0;
}

.btn-primary:hover {
    background: #2563EB;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(47, 128, 208, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: #ffffff;
}

.certifications {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.cert-icon {
    background: rgba(47, 128, 208, 0.15);
    padding: 20px 30px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(47, 128, 208, 0.3);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--light-gray);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
    text-align: center;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Products Section */
.products {
    padding: 100px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: var(--transition);
}

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

.product-image {
    height: 250px;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.product-image-placeholder {
    font-size: 4rem;
    opacity: 0.3;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.product-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.product-specs {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
}

.spec-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.spec-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* Applications Section */
.applications {
    padding: 100px 0;
    background: var(--light-gray);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.app-card {
    background: var(--white);
    height: 200px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    transition: var(--transition);
    cursor: pointer;
}

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

.app-card:hover .app-icon {
    transform: scale(1.1);
}

.app-icon {
    font-size: 2.5rem;
    transition: var(--transition);
}

.app-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Case Studies Section */
.case-studies {
    padding: 100px 0;
}

.case-card {
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--secondary-color);
}

.case-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.case-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.metric-item {
    text-align: center;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.metric-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

/* Certifications Section */
.certifications-section {
    padding: 100px 0;
    background: var(--light-gray);
}

.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.cert-item {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.cert-icon-big {
    font-size: 3rem;
    margin-bottom: 15px;
}

.cert-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #2b6cb0 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

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

.footer-section h4 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--white);
}

.footer-contact p {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.footer-social {
    text-align: center;
    padding: 25px 0 15px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 10px;
}

.footer-social h4 {
    color: var(--white);
    margin-bottom: 15px;
    font-size: 1rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    text-decoration: none;
    font-size: 1.1rem;
    transition: var(--transition);
}

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

.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #25d366;
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    z-index: 1000;
    text-decoration: none;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        height: 600px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary-color);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }

    .nav-links.active {
        display: flex;
    }

    .language-switcher {
        margin-left: 0;
        margin-top: 15px;
    }

    .hamburger {
        display: block;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        text-align: center;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .certifications {
        flex-wrap: wrap;
        gap: 15px;
    }

    .cert-icon {
        padding: 15px 20px;
        font-size: 0.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

    .case-metrics {
        gap: 20px;
    }

    .metric-value {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 80px;
        height: 550px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .features, .products, .applications, .case-studies, .certifications-section, .comparison-section, .test-reports {
        padding: 60px 0;
    }

    .feature-card, .product-card {
        padding: 25px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        text-align: center;
    }

    .hero-product-img {
        width: 200px;
        height: 200px;
    }

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

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

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

/* Comparison Section */
.comparison-section {
    padding: 100px 0;
    background: var(--light-gray);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.comparison-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.comparison-card.good {
    border-top: 4px solid #22C55E;
}

.comparison-card.bad {
    border-top: 4px solid #EF4444;
}

.comparison-image {
    height: 250px;
    overflow: hidden;
}

.comparison-content {
    padding: 30px;
}

.comparison-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.comparison-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.comparison-content ul {
    list-style: none;
    padding: 0;
}

.comparison-content ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--medium-gray);
    display: flex;
    align-items: center;
    gap: 10px;
}

.comparison-content ul li:last-child {
    border-bottom: none;
}

.comparison-content ul li .fa-check {
    color: #48bb78;
}

.comparison-content ul li .fa-times {
    color: #e53e3e;
}

.noise-comparison {
    margin: 40px 0;
}

.comparison-table-section {
    margin: 40px 0;
}

/* Test Reports Section */
.test-reports {
    padding: 100px 0;
    background: white;
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.report-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.report-card img {
    height: 200px;
}

.report-info {
    padding: 25px;
}

.report-info h4 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.report-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Page Header Styles */
.page-header {
    background: var(--light-gray);
    color: var(--text-primary);
    padding: 80px 0 40px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Form Styles */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

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

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

/* Product Detail Styles */
.product-detail {
    padding: 100px 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.product-detail-image {
    background: var(--light-gray);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
}

.product-detail-image img {
    max-width: 100%;
    max-height: 400px;
}

.product-detail-info h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.product-detail-info p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.specs-table th,
.specs-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--medium-gray);
}

.specs-table th {
    background: var(--light-gray);
    font-weight: 600;
    width: 40%;
}

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

/* About Page Styles */
.about-page {
    padding: 100px 0;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

/* Contact Page Styles */
.contact-page {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    background: var(--light-gray);
    padding: 40px;
    border-radius: 12px;
}

.contact-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 30px;
}

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