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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 95%;
    margin: 0 auto;
    padding: 0 20px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(218, 165, 32, 0.3);
    border-top: 4px solid #DAA520;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

#loading-text {
    font-size: 1.1rem;
    color: #DAA520;
    margin: 0;
}

/* Header */
.header {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #DAA520;
    margin: 0;
    letter-spacing: 1px;
}

.logo-text h1 span {
    color: #FFD700;
    font-weight: 400;
}

.tagline {
    font-size: 0.8rem;
    color: #DAA520;
    margin: 2px 0;
    font-weight: 500;
}

.location {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    color: #ccc;
}

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

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #DAA520;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #DAA520;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 3px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #DAA520;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23DAA520" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23DAA520" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(218, 165, 32, 0.2);
    border: 1px solid #DAA520;
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
  
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #DAA520;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #DAA520;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(45deg, #DAA520, #FFD700);
    color: #1a1a1a;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.4);
}

.btn-secondary {
    background: transparent;
    color: black;
    border: 2px solid #DAA520;
}

.btn-secondary:hover {
    background: #DAA520;
    color: #1a1a1a;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

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

.company-highlights {
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.highlight-item i {
    font-size: 1.5rem;
    color: #DAA520;
    margin-top: 0.2rem;
}

.highlight-item h4 {
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.highlight-item p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.mission-box {
    background: linear-gradient(135deg, #DAA520, #FFD700);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.mission-icon {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.mission-icon i {
    font-size: 1.5rem;
}

.mission-box h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Why Choose Section */
.why-choose-section {
    padding: 5rem 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #DAA520;
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #1a1a1a;
    font-size: 1.2rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Products Section */
.products-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

.product-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 25px;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: #DAA520;
    color: white;
    border-color: #DAA520;
    transform: translateY(-2px);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(218, 165, 32, 0.1), transparent);
    transition: left 0.5s;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(218, 165, 32, 0.2);
}

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.product-icon i {
    font-size: 2rem;
    color: white;
}

.product-card h3 {
    margin-bottom: 1rem;
    color: #1a1a1a;
    font-size: 1.3rem;
}

.product-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #DAA520;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.subproduct-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.subproduct-tag {
    background: #f8f9fa;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #555;
    border: 1px solid #e9ecef;
}

.product-stats {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

.product-stats span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

.product-stats i {
    color: #DAA520;
}

.load-more-container {
    text-align: center;
    margin-top: 3rem;
    
}

.load-more {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.load-count {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 2% auto;
    border-radius: 15px;
    width: 95%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 1px solid #e9ecef;
}

.modal-header h3 {
    color: #1a1a1a;
    font-size: 1.5rem;
}

.modal-close {
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: #DAA520;
}

.modal-body {
    padding: 2rem;
}

.subproduct-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.subproduct-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #DAA520;
    transition: all 0.3s ease;
}

.subproduct-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.subproduct-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.subproduct-number {
    background: #DAA520;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
}

.subproduct-card h4 {
    color: #1a1a1a;
    margin: 0;
    font-size: 1.1rem;
}

.subproduct-description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.subproduct-detail {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
}

.subproduct-detail strong {
    color: #1a1a1a;
    min-width: 100px;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.subproduct-detail i {
    color: #DAA520;
    font-size: 0.8rem;
}

.subproduct-actions {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #e9ecef;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.load-more-sub {
    margin: 0 auto;
    display: block;
}

/* Trade Fairs Section */
.trade-fairs-section {
    padding: 5rem 0;
    background: white;
}

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

.fair-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.fair-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(218, 165, 32, 0.1), transparent);
    transition: left 0.5s;
}

.fair-card:hover::before {
    left: 100%;
}

.fair-card:hover {
    transform: translateY(-5px);
    border-color: #DAA520;
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.2);
}

.fair-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.fair-icon i {
    font-size: 1.8rem;
    color: white;
}

.fair-card h3 {
    margin-bottom: 0.5rem;
    color: #1a1a1a;
    font-size: 1.3rem;
}

.fair-location {
    color: #DAA520;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.fair-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.fair-desc {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.fair-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #28a745;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.fair-badge.upcoming {
    background: #007bff;
}

.fair-badge.completed {
    background: #6c757d;
}

/* Testimonials Section */
.testimonials-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

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

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    border-left: 4px solid #DAA520;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(218, 165, 32, 0.2);
}

.testimonial-quote {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 3rem;
    color: #DAA520;
    opacity: 0.3;
    line-height: 1;
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-rating {
    display: flex;
    gap: 0.2rem;
    margin-bottom: 1rem;
}

.star {
    color: #ffc107;
    font-size: 1rem;
}

.star.empty {
    color: #e9ecef;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.author-info h4 {
    color: #1a1a1a;
    margin-bottom: 0.2rem;
    font-size: 1rem;
}

.author-company {
    color: #DAA520;
    font-size: 0.9rem;
    font-weight: 500;
}

.author-country {
    color: #666;
    font-size: 0.8rem;
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background: white;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: white;
    font-size: 1.2rem;
}

.contact-details h4 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #666;
    margin: 0;
}

.contact-details a {
    color: #DAA520;
    text-decoration: none;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-form-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border: 1px solid #e9ecef;
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.form-header p {
    color: #666;
    margin: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.input-group {
    position: relative;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: #DAA520;
}

.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 1rem;
}

.input-group textarea + i {
    top: 1rem;
    transform: none;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 6px;
}

.footer-logo h3 {
    color: #DAA520;
    margin: 0;
}

.footer-logo p {
    color: #ccc;
    margin: 0;
    font-size: 0.9rem;
}

.footer-desc {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: #DAA520;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(218, 165, 32, 0.3);
}

.footer-section h4 {
    color: #DAA520;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #DAA520;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: #ccc;
}

.footer-contact i {
    color: #DAA520;
    width: 16px;
}

.certifications {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.cert-badge {
    background: #DAA520;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #ccc;
    font-size: 0.9rem;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #DAA520, #FFD700);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(218, 165, 32, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(26, 26, 26, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        gap: 0;
        transform: translateY(-100%);
        transition: transform 0.3s ease;
        padding: 2rem;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-link {
        padding: 1rem 0;
        border-bottom: 1px solid #333;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .fairs-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .subproduct-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .product-filter {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .fairs-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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