/* KAM Sensors - Responsive Styles */
/* Version: 4.0 */

/* ========== Large Desktop (1400px and below) ========== */
@media (max-width: 1400px) {
    .container {
        max-width: 1200px;
        padding: 0 30px;
    }
    
    .hero-content h1 {
        font-size: 48px;
    }
    
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    }
    
    .footer-grid > .footer-col:last-child {
        grid-column: 1 / -1;
        text-align: center;
        margin-top: 20px;
    }
}

/* ========== Desktop (1200px and below) ========== */
@media (max-width: 1200px) {
    .main-nav .nav-item > a {
        padding: 35px 15px;
        font-size: 13px;
    }
    
    .hero-content h1 {
        font-size: 42px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .products-grid-4col {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .application-grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========== Tablet (991px and below) ========== */
@media (max-width: 991px) {
    .header-inner {
        height: 70px;
    }
    
    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #fff;
        padding: 30px;
        transform: translateX(-100%);
        transition: var(--transition);
        overflow-y: auto;
        z-index: 999;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .main-nav .nav-item > a {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .mega-menu,
    .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        display: none;
    }
    
    .main-nav .nav-item.open .mega-menu,
    .main-nav .nav-item.open .sub-menu {
        display: block;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-banner {
        margin-top: 70px;
        height: 500px;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-pagination {
        display: none;
    }
    
    .hero-nav.next {
        right: 20px;
    }
    
    .products-grid-4col {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-home-grid {
        grid-template-columns: 1fr;
    }
    
    .news-home-left {
        padding: 40px;
    }
    
    .news-home-left h2 {
        font-size: 36px;
    }
    
    .about-home-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-home-content h2 {
        font-size: 32px;
    }
    
    .cta-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-card {
        height: 300px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .footer-grid > .footer-col:first-child {
        grid-column: 1 / -1;
    }
    
    .products-layout {
        grid-template-columns: 1fr;
    }
    
    .products-sidebar {
        display: flex;
        gap: 20px;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .products-sidebar .sidebar-widget {
        min-width: 250px;
        flex-shrink: 0;
        margin-bottom: 0;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .contact-info-panel,
    .contact-form-panel {
        padding: 40px;
    }
    
    .news-detail-layout {
        grid-template-columns: 1fr;
    }
    
    .news-sidebar {
        order: -1;
    }
    
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-intro-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-banner {
        margin-top: 70px;
        padding: 80px 0 60px;
    }
    
    .page-banner h1 {
        font-size: 36px;
    }
}

/* ========== Mobile Large (767px and below) ========== */
@media (max-width: 767px) {
    .container {
        padding: 0 20px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .hero-banner {
        height: 450px;
    }
    
    .hero-content {
        padding: 0 20px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 14px;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: 10px;
    }
    
    .hero-btns .btn {
        width: 100%;
        text-align: center;
    }
    
    .hero-scroll {
        display: none;
    }
    
    .product-card {
        flex: 0 0 calc(100% - 20px);
    }
    
    .products-grid-4col,
    .products-grid-view {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .news-home-item {
        flex-direction: column;
    }
    
    .news-home-item .news-image {
        width: 100%;
        height: 150px;
    }
    
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .stat-box .stat-number {
        font-size: 32px;
    }
    
    .cta-card {
        height: 250px;
    }
    
    .cta-card-content {
        padding: 30px;
    }
    
    .cta-card-content h3 {
        font-size: 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .application-grid-3col {
        grid-template-columns: 1fr;
    }
    
    .application-filters {
        flex-wrap: wrap;
    }
    
    .filter-btn {
        font-size: 13px;
        padding: 10px 20px;
    }
    
    .contact-form-grid {
        grid-template-columns: 1fr;
    }
    
    .news-list-item {
        flex-direction: column;
    }
    
    .news-list-item .news-image {
        width: 100%;
        height: 180px;
    }
    
    .news-tabs {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .news-detail-content {
        padding: 25px;
    }
    
    .news-detail-header h1 {
        font-size: 22px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .about-title-block {
        flex-direction: column;
        gap: 10px;
    }
    
    .about-title-blue,
    .about-title-dark {
        font-size: 18px;
        padding: 12px 20px;
    }
    
    .about-since {
        font-size: 48px;
        position: static;
        text-align: right;
        margin-bottom: 20px;
    }
    
    .about-stats-row {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .about-stat-item {
        padding: 20px 15px;
    }
    
    .about-stat-item .number {
        font-size: 28px;
    }
    
    .search-box-large form {
        flex-direction: column;
    }
    
    .search-box-large button {
        width: 100%;
    }
    
    .search-result-item {
        flex-direction: column;
    }
    
    .search-result-item .result-image {
        width: 100%;
        height: 120px;
    }
    
    .service-tabs {
        flex-wrap: wrap;
    }
    
    .service-tab {
        font-size: 13px;
        padding: 10px 20px;
    }
    
    .service-content-card {
        padding: 30px;
    }
    
    .service-content-card h2 {
        font-size: 22px;
    }
    
    .pagination .page-input {
        display: none;
    }
    
    .contact-float {
        display: none;
    }
    
    .online-service {
        bottom: 70px;
    }
}

/* ========== Mobile Small (480px and below) ========== */
@media (max-width: 480px) {
    .header-inner {
        height: 60px;
    }
    
    .logo img {
        max-height: 35px;
    }
    
    .header-lang {
        display: none;
    }
    
    .hero-banner {
        margin-top: 60px;
        height: 400px;
    }
    
    .hero-content h1 {
        font-size: 24px;
    }
    
    .products-grid-4col,
    .products-grid-view {
        grid-template-columns: 1fr;
    }
    
    .about-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats-row {
        grid-template-columns: 1fr;
    }
    
    .page-banner {
        margin-top: 60px;
        padding: 60px 0 40px;
    }
    
    .page-banner h1 {
        font-size: 28px;
    }
    
    .btn {
        padding: 12px 30px;
        font-size: 13px;
    }
    
    .btn-lg {
        padding: 14px 35px;
    }
}

/* ========== Print Styles ========== */
@media print {
    .header,
    .footer,
    .back-to-top,
    .online-service,
    .contact-float,
    .hero-nav,
    .hero-pagination {
        display: none !important;
    }
    
    .hero-banner {
        margin-top: 0;
        height: auto;
        padding: 40px 0;
    }
    
    .section {
        padding: 30px 0;
    }
    
    a {
        text-decoration: underline;
    }
}