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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.2rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

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

.nav-link {
    font-weight: 500;
    color: #666;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #2563eb;
    background-color: rgba(37, 99, 235, 0.1);
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: 1px solid #e5e7eb;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
    transition: all 0.3s ease;
}

.dropdown-btn:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: 0.75rem 1rem;
    color: #666;
    font-size: 0.9rem;
}

.dropdown-content a:hover,
.dropdown-content a.active {
    background-color: #f3f4f6;
    color: #2563eb;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    transition: all 0.3s ease;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid #e5e7eb;
    z-index: 999;
}

.mobile-nav-list {
    list-style: none;
    padding: 1rem 0;
}

.mobile-nav-list li {
    padding: 0.5rem 1rem;
}

.mobile-nav-list a {
    display: block;
    color: #666;
    font-weight: 500;
    padding: 0.5rem 0;
}

.mobile-lang-switcher {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-top: 1px solid #e5e7eb;
}

.mobile-lang-switcher a {
    color: #666;
    font-size: 0.9rem;
}

.mobile-lang-switcher a.active {
    color: #2563eb;
    font-weight: 600;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.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 1000 100" fill="white" opacity="0.1"><polygon points="0,100 1000,0 1000,100"/></svg>') no-repeat center bottom;
    background-size: cover;
}

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

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #2563eb;
    color: white;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background-color: white;
    color: #2563eb;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    color: #1f2937;
    margin-bottom: 1rem;
}

.section-title p {
    color: #6b7280;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Welcome Section */
.welcome {
    background-color: #f9fafb;
}

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

.welcome-text h2 {
    color: #1f2937;
    margin-bottom: 1.5rem;
}

.welcome-text p {
    color: #6b7280;
    font-size: 1.1rem;
    line-height: 1.8;
}

.welcome-image {
    text-align: center;
}

.welcome-image img {
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f3f4f6;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.product-card h3 {
    color: #1f2937;
    margin-bottom: 1rem;
}

.product-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* About Sections */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.about-item {
    text-align: center;
    padding: 2rem;
}

.about-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.about-item h3 {
    color: #1f2937;
    margin-bottom: 1rem;
}

.about-item p {
    color: #6b7280;
    line-height: 1.7;
}

/* Contact Section */
.contact {
    background-color: #f9fafb;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info h3 {
    color: #1f2937;
    margin-bottom: 2rem;
}

.office {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.office h4 {
    color: #2563eb;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.office p {
    color: #6b7280;
    margin-bottom: 0.5rem;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #374151;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background-color: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section li {
    color: #d1d5db;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: #d1d5db;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #374151;
    color: white;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-item i {
    color: #2563eb;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.lang-links {
    display: flex;
    gap: 1rem;
}

.lang-links a {
    color: #d1d5db;
    transition: color 0.3s ease;
}

.lang-links a:hover,
.lang-links a.active {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: #2563eb;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
}

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

.fade-in {
    animation: fadeInUp 0.6s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-nav.active {
        display: block;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .section {
        padding: 60px 0;
    }
    
    .welcome-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .product-card,
    .contact-form {
        padding: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .mobile-nav,
    .back-to-top {
        display: none;
    }
    
    .hero {
        padding: 2rem 0;
        background: none;
        color: #333;
    }
    
    .section {
        padding: 2rem 0;
    }
}