/* Responsive Styles - Mobile First Approach */

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
    .container {
        --container-padding: 2rem;
    }
    
    .hero-title {
        font-size: var(--text-6xl);
    }
    
    .stats-grid {
        gap: var(--space-2xl);
    }
    
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Desktop (992px to 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px to 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    :root {
        --header-height: var(--header-height-mobile);
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: var(--text-3xl);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* About Preview Section Tablet */
    .about-preview-section .container > div {
        grid-template-columns: 1fr !important;
        gap: var(--space-xl) !important;
    }
    
    .about-preview-section img {
        height: 300px !important;
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .cta-content h2 {
        font-size: var(--text-3xl);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Header Responsive Styles
   ============================================ */

/* Tablet (768px to 1024px) */
@media (max-width: 1024px) {
    .nav-link {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .header-inner {
        gap: var(--spacing-lg);
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    :root {
        --header-height: 64px;
        --container-padding: 1rem;
    }
    
    /* Header Mobile */
    .header {
        height: var(--header-height);
    }
    
    .header-inner {
        position: relative;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--header-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-lg);
        transform: translateX(-100%);
        opacity: 1;
        visibility: visible;
        transition: transform var(--transition-normal);
        z-index: 999;
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
        font-size: 16px;
        text-align: left;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--bg-secondary, #f8fafc);
        margin: 4px 0;
        display: none;
        padding: 4px 0;
    }
    
    .nav-item.dropdown.active .dropdown-menu {
        display: block;
    }
    
    .language-switcher {
        margin-left: 0;
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-lg);
        border-top: 1px solid var(--border-light);
        justify-content: center;
    }
    
    /* Hero Mobile */
    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-2xl);
    }
    
    .hero-content {
        padding: var(--space-xl);
    }
    
    .hero-title {
        font-size: var(--text-3xl);
        margin-bottom: var(--space-md);
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
        margin-bottom: var(--space-xl);
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .hero-stats {
        position: relative;
        background: rgba(15, 23, 42, 0.9);
        padding: var(--space-lg) 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .stat-item {
        padding: var(--space-md);
    }
    
    .stat-number {
        font-size: var(--text-2xl);
    }
    
    .stat-label {
        font-size: var(--text-xs);
    }
    
    /* Section Mobile */
    section {
        padding: var(--space-3xl) 0;
    }
    
    .section-header {
        margin-bottom: var(--space-2xl);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .section-subtitle {
        font-size: var(--text-base);
    }
    
    /* Products Mobile */
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .product-card {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .product-content {
        padding: var(--space-lg);
    }
    
    .product-name {
        font-size: var(--text-lg);
    }
    
    /* Applications Mobile */
    .applications-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .application-card {
        padding: var(--space-xl);
    }
    
    .application-icon {
        width: 60px;
        height: 60px;
    }
    
    /* Why Us Mobile */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .feature-item {
        padding: var(--space-xl);
    }
    
    .feature-icon {
        width: 56px;
        height: 56px;
    }
    
    /* About Preview Section Mobile */
    .about-preview-section .container > div {
        grid-template-columns: 1fr !important;
        gap: var(--space-xl) !important;
    }
    
    .about-preview-section img {
        height: 250px !important;
    }
    
    .about-preview-section h2 {
        font-size: var(--text-2xl) !important;
    }
    
    .about-preview-section p {
        font-size: var(--text-base) !important;
    }
    
    /* CTA Mobile */
    .cta-content h2 {
        font-size: var(--text-2xl);
    }
    
    .cta-content p {
        font-size: var(--text-base);
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    /* Footer Mobile */
    .footer {
        padding: var(--space-3xl) 0 var(--space-lg);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .footer-section h3 {
        margin-bottom: var(--space-md);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-md);
    }
}

/* Small Mobile (up to 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-sm);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: var(--space-sm);
    }
    
    .section-title {
        font-size: var(--text-xl);
    }
    
    .btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--text-sm);
    }
    
    .btn-large {
        padding: var(--space-md) var(--space-xl);
    }
    
    .product-image {
        height: 160px;
    }
    
    .application-icon {
        width: 48px;
        height: 48px;
    }
    
    .feature-icon {
        width: 48px;
        height: 48px;
    }
}

/* Landscape Mobile */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
    }
    
    .hero-stats {
        position: relative;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .hero-background img {
        animation: none;
    }
    
    .product-card:hover,
    .application-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .hero-stats,
    .cta-section,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        color: var(--text-primary);
        background: none;
    }
    
    .hero-background,
    .hero-overlay {
        display: none;
    }
    
    .hero-content {
        color: var(--text-primary);
    }
    
    section {
        padding: var(--space-lg) 0;
        page-break-inside: avoid;
    }
    
    .product-card,
    .application-card {
        break-inside: avoid;
        border: 1px solid var(--border-color);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .header {
        background-color: var(--bg-dark);
        border-bottom-color: var(--border-color);
    }
    
    .main-nav {
        background-color: var(--bg-dark);
    }
    
    .dropdown-menu {
        background-color: var(--bg-dark);
        border-color: var(--border-color);
    }
    
    .product-card,
    .application-card {
        background-color: var(--bg-secondary);
        border-color: var(--border-color);
    }
}

/* Focus Visible for Accessibility */
@media (hover: hover) {
    .nav-link:hover,
    .product-link:hover,
    .footer-section a:hover {
        text-decoration: underline;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .product-card:hover,
    .application-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .dropdown:hover .dropdown-menu {
        opacity: 0;
        visibility: hidden;
    }
    
    .dropdown.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
    }
}