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

body {
    font-family: 'Kanit', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header Styles */
.header {
    background: #fff;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    padding: 0.8rem 0;
}

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

.nav-logo .logo {
    height: 45px;
    width: auto;
    transition: transform 0.3s ease;
}

.nav-logo .logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-item {
    margin: 0 0.5rem;
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.8rem 1rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    border-radius: 6px;
    position: relative;
}

.nav-link:hover {
    color: #ff6b35;
    background-color: rgba(255, 107, 53, 0.1);
    transform: translateY(-1px);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    border-radius: 12px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 0.8rem 0;
    border: 1px solid rgba(0,0,0,0.05);
    z-index: 1000;
}

.nav-item.dropdown:hover .dropdown-menu,
.dropdown:hover .dropdown-menu,
.nav-item.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    border-radius: 6px;
    margin: 0 0.5rem;
}

.dropdown-menu a:hover {
    background-color: rgba(255, 107, 53, 0.1);
    color: #ff6b35;
    transform: translateX(5px);
}

/* Nested Dropdown Styles */
.dropdown-menu li {
    position: relative;
}

.dropdown-menu .dropdown-submenu {
    position: absolute;
    top: 0;
    left: 100%;
    background: #fff;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    border-radius: 12px;
    min-width: 240px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 0.8rem 0;
    border: 1px solid rgba(0,0,0,0.05);
    margin-left: 0.25rem;
    z-index: 1001;
    pointer-events: none;
}

/* Bridge element to prevent hover loss when moving from parent to submenu */
.dropdown-menu .has-submenu::before {
    content: '';
    position: absolute;
    top: 0;
    right: -0.25rem;
    width: 0.5rem;
    height: 100%;
    z-index: 1002;
}

.dropdown-menu li:hover > .dropdown-submenu,
.dropdown-menu li.active > .dropdown-submenu,
.dropdown-menu .dropdown-submenu:hover,
.dropdown-menu .has-submenu:hover .dropdown-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    pointer-events: auto;
}

/* Ensure all submenu links are clickable when submenu is visible */
.dropdown-menu li:hover > .dropdown-submenu a,
.dropdown-menu .dropdown-submenu:hover a,
.dropdown-menu .has-submenu:hover .dropdown-submenu a {
    pointer-events: auto;
    cursor: pointer;
}

.dropdown-menu .dropdown-submenu a {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
}

.dropdown-menu .has-submenu > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dropdown-menu .has-submenu > a::after {
    content: "\f054";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.7rem;
    margin-left: auto;
    transition: transform 0.3s ease;
}

.dropdown-menu .has-submenu:hover > a::after,
.dropdown-menu .has-submenu.active > a::after {
    transform: translateX(3px);
}

.dropdown-menu .category-header {
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    color: #ff6b35;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    margin-bottom: 0.3rem;
}

.header-contact {
    margin-left: 1rem;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
    color: white;
}

.contact-btn i {
    font-size: 0.9rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Hero Background Effects */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #ff6b35, transparent),
        radial-gradient(2px 2px at 40px 70px, #ff6b35, transparent),
        radial-gradient(1px 1px at 90px 40px, #ff6b35, transparent),
        radial-gradient(1px 1px at 130px 80px, #ff6b35, transparent),
        radial-gradient(2px 2px at 160px 30px, #ff6b35, transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: particleFloat 20s linear infinite;
    opacity: 0.3;
}

.hero-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 107, 53, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 107, 53, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 30s linear infinite;
}

@keyframes particleFloat {
    0% { transform: translateY(0px) translateX(0px); }
    100% { transform: translateY(-200px) translateX(200px); }
}

@keyframes gridMove {
    0% { transform: translateX(0px) translateY(0px); }
    100% { transform: translateX(50px) translateY(50px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

/* Hero Badge */
.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    padding: 8px 20px;
    border-radius: 25px;
    margin-bottom: 2rem;
    animation: badgePulse 2s ease-in-out infinite;
}

.badge-text {
    font-weight: 600;
    font-size: 0.9rem;
    display: block;
}

.badge-subtitle {
    font-size: 0.7rem;
    opacity: 0.8;
    display: block;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
    animation: titleSlideIn 1s ease-out forwards;
    opacity: 0;
    transform: translateY(50px);
}

.title-line:nth-child(1) {
    animation-delay: 0.2s;
}

.title-line:nth-child(2) {
    animation-delay: 0.4s;
}

.title-line.highlight {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes titleSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.6s both;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: #ff6b35;
    margin-bottom: 0.5rem;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 1s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border-color: #fff;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.hero-image {
    text-align: center;
    animation: fadeInRight 1s ease-out 0.5s both;
}

.hero-image-container {
    position: relative;
    display: inline-block;
}

.hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
    animation: imageFloat 6s ease-in-out infinite;
}

.hero-img:hover {
    transform: scale(1.05);
}

@keyframes imageFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-overlay {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    animation: overlaySlideIn 1s ease-out 1.2s both;
}

.overlay-card {
    background: rgba(255, 255, 255, 0.95);
    color: #333;
    padding: 10px 15px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.overlay-card:hover {
    transform: translateX(-5px);
}

.overlay-card i {
    color: #ff6b35;
    font-size: 1rem;
}

@keyframes overlaySlideIn {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: fadeInUp 1s ease-out 1.5s both;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: color 0.3s ease;
}

.scroll-indicator:hover {
    color: #ff6b35;
}

.scroll-indicator span {
    font-size: 0.9rem;
    font-weight: 500;
}

.scroll-arrow {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Partners Section */
.partners {
    padding: 80px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 3rem;
    color: #333;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    align-items: center;
}

.partner-item {
    text-align: center;
    padding: 1rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.partner-item:hover {
    transform: translateY(-5px);
}

.partner-item img {
    max-width: 100%;
    height: 60px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.partner-item:hover img {
    filter: grayscale(0%);
}

/* Products Section */
.products {
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.product-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-image-secondary {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-image img:first-child {
    transform: scale(1.1);
}

.product-card:hover .product-image-secondary {
    opacity: 1;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.product-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* Certifications Section */
.certifications {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.cert-item {
    text-align: center;
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-5px);
}

.cert-item img {
    max-width: 120px;
    height: auto;
    margin-bottom: 1rem;
}

.cert-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.cert-item p {
    color: #666;
    font-size: 0.9rem;
}

/* About Section */
.about {
    padding: 80px 0;
}

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

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.about-features {
    display: grid;
    gap: 1rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #666;
}

.feature i {
    color: #28a745;
    font-size: 1.2rem;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-item i {
    font-size: 1.5rem;
    color: #007bff;
    width: 30px;
}

.contact-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

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

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Kanit', sans-serif;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
}

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

/* Map Section */
.map-section {
    padding: 40px 0;
}

.map-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Footer */
.footer {
    background: #333;
    color: #fff;
    padding: 60px 0 20px;
}

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

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: transform 0.3s ease;
}

.footer-logo img:hover {
    transform: scale(1.05);
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
}

.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: #007bff;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 2rem;
    text-align: center;
    color: #ccc;
}

/* Social Media Icons */
.social-media {
    margin-top: 1.5rem;
}

.social-media h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
}

.social-icons {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.social-icons a:hover {
    background: #ff6b35;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.social-icons a.facebook:hover {
    background: #1877f2;
    box-shadow: 0 5px 15px rgba(24, 119, 242, 0.4);
}

.social-icons a.twitter:hover {
    background: #1da1f2;
    box-shadow: 0 5px 15px rgba(29, 161, 242, 0.4);
}

.social-icons a.linkedin:hover {
    background: #0077b5;
    box-shadow: 0 5px 15px rgba(0, 119, 181, 0.4);
}

.social-icons a.instagram:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    box-shadow: 0 5px 15px rgba(225, 48, 108, 0.4);
}

.social-icons a.youtube:hover {
    background: #ff0000;
    box-shadow: 0 5px 15px rgba(255, 0, 0, 0.4);
}

@media (max-width: 768px) {
    .social-icons {
        justify-content: center;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-contact {
        display: none;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: left;
        transition: 0.3s ease;
        box-shadow: 0 10px 27px rgba(0,0,0,0.1);
        padding: 1rem 0;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        z-index: 999;
    }

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

    .nav-item {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }

    .nav-link {
        padding: 1rem 1.5rem;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 1rem;
        border-radius: 0;
    }

    .nav-link:hover {
        background-color: rgba(255, 107, 53, 0.1);
        transform: none;
    }

    /* Mobile dropdown menu styles */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0;
        margin: 0;
        background: rgba(0,0,0,0.03);
        border-radius: 0;
        min-width: auto;
        width: 100%;
        display: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .dropdown-menu.active {
        display: block;
        max-height: 2000px;
        padding: 0.5rem 0;
    }

    .dropdown-menu li {
        width: 100%;
        margin: 0;
    }

    .dropdown-menu a {
        padding: 0.9rem 1.5rem 0.9rem 2.5rem;
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.95rem;
        border-radius: 0;
        margin: 0;
    }

    .dropdown-menu a:hover {
        background-color: rgba(255, 107, 53, 0.1);
        transform: none;
    }

    /* Mobile nested dropdown styles */
    .dropdown-menu .dropdown-submenu {
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        box-shadow: none;
        border: none;
        padding: 0 !important;
        margin: 0 !important;
        background: rgba(0,0,0,0.05);
        border-radius: 0;
        min-width: auto;
        width: 100%;
        display: none !important;
        max-height: 0 !important;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        pointer-events: auto !important;
    }

    .dropdown-menu .dropdown-submenu.active {
        display: block !important;
        max-height: 2000px !important;
        padding: 0.5rem 0 !important;
    }

    .dropdown-submenu a {
        padding: 0.8rem 1.5rem 0.8rem 3.5rem;
        font-size: 0.9rem;
    }

    /* Dropdown indicators */
    .nav-item.dropdown > .nav-link i.fa-chevron-down {
        display: none;
    }

    .nav-item.dropdown > .nav-link::after {
        content: "\f078";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        font-size: 0.8rem;
        transition: transform 0.3s ease;
        margin-left: auto;
        padding-left: 10px;
    }

    .nav-item.dropdown.active > .nav-link::after {
        transform: rotate(180deg);
    }

    .dropdown-menu .has-submenu > a::after {
        content: "\f054";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        font-size: 0.7rem;
        transition: transform 0.3s ease;
    }

    .dropdown-menu .has-submenu.active > a::after {
        transform: rotate(90deg);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
    }

    /* Mobile menu overlay - using separate element for better control */
    .nav-overlay {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 998;
        display: block;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Hide overlay on desktop */
    @media (min-width: 769px) {
        .nav-overlay {
            display: none !important;
        }
    }

    /* Ensure touch-friendly sizes */
    .nav-link,
    .dropdown-menu a,
    .dropdown-submenu a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Better spacing for mobile */
    .nav-container {
        padding: 0 15px;
    }

    /* Smooth scroll for mobile menu */
    .nav-menu {
        -webkit-overflow-scrolling: touch;
    }

    /* Active state for better visual feedback */
    .nav-item.dropdown.active > .nav-link,
    .has-submenu.active > a {
        background-color: rgba(255, 107, 53, 0.15);
        color: #ff6b35;
    }

    /* Better visual hierarchy */
    .dropdown-menu a {
        font-weight: 400;
    }

    .dropdown-submenu a {
        font-weight: 400;
        color: #555;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

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

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .product-content {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

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

/* Hover Effects */
.product-card,
.cert-item,
.contact-item {
    transition: all 0.3s ease;
}

.product-card:hover,
.cert-item:hover {
    transform: translateY(-5px);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #007bff;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0056b3;
}