/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --secondary-color: #2c3e50;
    --accent-color: #00d4ff;
    --text-dark: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #4a90e2 0%, #00d4ff 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--secondary-color);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    color: white;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="2"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 30px;
    border: 2px solid white;
    border-radius: 15px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: white;
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 20% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) translateY(12px);
        opacity: 0;
    }
}

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

/* Section Styles */
section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: var(--bg-white);
}

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

.about-text h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder svg {
    width: 100%;
    height: 100%;
}

/* Products Section */
.products {
    background: var(--bg-white);
}

.product-showcase {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.badge-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.badge.success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.badge.patent {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.product-content h3 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.product-content h4 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.product-intro {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-highlights h5 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-list {
    list-style: none;
    margin-bottom: 2rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-white);
    border-radius: 8px;
    transition: var(--transition);
}

.feature-list li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.check-icon {
    width: 20px;
    height: 20px;
    color: #38ef7d;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-list span {
    color: var(--text-dark);
    line-height: 1.6;
}

.patent-info {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 10px;
    margin-top: 2rem;
}

.patent-info .icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.patent-info strong {
    display: block;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.patent-info p {
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.product-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.product-placeholder {
    width: 100%;
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.product-placeholder svg {
    width: 100%;
    height: auto;
}

.product-tags {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.tag {
    padding: 8px 16px;
    background: var(--bg-white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
}

.products-cta {
    text-align: center;
    background: var(--gradient-2);
    color: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

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

.products-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.products-cta .btn {
    background: white;
    color: var(--primary-color);
}

.products-cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Technology Section */
.technology {
    background: var(--bg-light);
}

.fcs-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-2);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.fcs-content h3 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.fcs-content h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.fcs-content p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.tech-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 10px;
    transition: var(--transition);
}

.feature-item:hover {
    background: #e3f2fd;
    transform: translateX(5px);
}

.feature-item .icon {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.feature-item span {
    font-size: 0.95rem;
    color: var(--text-dark);
    font-weight: 500;
}

.fcs-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-placeholder {
    width: 100%;
    max-width: 400px;
}

.tech-placeholder svg {
    width: 100%;
    height: auto;
}

/* Benefits Section */
.benefits-section {
    margin-top: 4rem;
}

.benefits-title {
    text-align: center;
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 3rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.benefit-card h4 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.benefit-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Applications */
.applications {
    margin-top: 4rem;
    text-align: center;
    background: var(--bg-white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.applications h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.applications p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

/* Contact Section */
.contact {
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-item .icon {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.info-item strong {
    display: block;
    color: var(--secondary-color);
    margin-bottom: 0.25rem;
}

.info-item p {
    color: var(--text-light);
    margin: 0;
}

/* Contact Form */
.contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group textarea {
    resize: vertical;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    display: none;
}

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

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

/* Footer */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.footer-section h3 span {
    color: var(--accent-color);
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 0.5rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.7);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: var(--bg-white);
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .about-content,
    .fcs-feature,
    .contact-content,
    .product-showcase {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .fcs-feature,
    .product-showcase {
        padding: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .tech-features {
        grid-template-columns: 1fr;
    }

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

    .section-header h2 {
        font-size: 2rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .product-content h3 {
        font-size: 2rem;
    }

    .product-content h4 {
        font-size: 1.2rem;
    }

    .badge-group {
        justify-content: center;
    }

    .patent-info {
        flex-direction: column;
        text-align: center;
    }

    .patent-info .icon {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

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

    section {
        padding: 50px 0;
    }

    .fcs-feature,
    .product-showcase {
        padding: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .product-content h3 {
        font-size: 1.6rem;
    }

    .products-cta h3 {
        font-size: 1.5rem;
    }

    .product-tags {
        flex-direction: column;
    }

    .tag {
        width: 100%;
        text-align: center;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 1s ease;
}