/* ============================================
   ProSystema Premium Responsive Styles
   Mobile-First Approach
   ============================================ */

/* ============================================
   Base Mobile Styles (up to 767px)
   ============================================ */
@media (max-width: 767px) {
    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
        height: 100%;
    }
    /* Container */
    .container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
    
    /* Header */
    .site-header {
        overflow: visible;
    }
    
    .header-container {
        overflow: visible;
    }
    
    .header-wrapper {
        padding: var(--space-3) 0;
        overflow: visible;
    }
    
    .custom-logo {
        max-height: 95px;
        max-width: 300px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-navigation {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        max-width: 100vw !important;
        max-height: 100vh !important;
        background: linear-gradient(
            135deg,
            rgba(255, 255, 255, 0.98) 0%,
            rgba(255, 255, 255, 0.95) 100%
        ) !important;
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        z-index: 99999 !important;
        transform: translateY(-100%);
        opacity: 0;
        transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
                    opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        padding: var(--space-6) var(--space-4) var(--space-20);
        display: flex;
        flex-direction: column;
        margin: 0 !important;
        box-sizing: border-box;
        border: none !important;
    }
    
    .main-navigation[aria-expanded="true"],
    .main-navigation.is-open {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-menu {
        position: static;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--space-2);
        width: 100%;
        display: flex !important;
        flex: 1;
        padding-bottom: var(--space-4);
    }
    
    .nav-menu li {
        width: 100%;
        opacity: 0;
        transform: translateY(20px);
        animation: slideInUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    }
    
    .main-navigation.is-open .nav-menu li:nth-child(1) { animation-delay: 0.1s; }
    .main-navigation.is-open .nav-menu li:nth-child(2) { animation-delay: 0.15s; }
    .main-navigation.is-open .nav-menu li:nth-child(3) { animation-delay: 0.2s; }
    .main-navigation.is-open .nav-menu li:nth-child(4) { animation-delay: 0.25s; }
    .main-navigation.is-open .nav-menu li:nth-child(5) { animation-delay: 0.3s; }
    .main-navigation.is-open .nav-menu li:nth-child(n+6) { animation-delay: 0.35s; }
    
    @keyframes slideInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-menu a {
        width: 100%;
        padding: var(--space-4) var(--space-5);
        font-size: 1.125rem;
        font-weight: 500;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.6);
        border: 1px solid rgba(229, 231, 235, 0.5);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    
    .nav-menu a:hover,
    .nav-menu a:active {
        background: rgba(16, 185, 129, 0.08);
        border-color: rgba(16, 185, 129, 0.3);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(16, 185, 129, 0.12);
    }
    
    .nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: var(--space-2) 0 var(--space-2) var(--space-4);
        background-color: var(--color-background-alt);
    }
    
    /* Dropdown Mega Menu Mobile Styles */
    .mega-menu-dropdown {
        position: static !important;
        left: 0 !important;
        right: 0 !important;
        transform: none !important;
        min-width: auto;
        max-width: 100%;
        padding: 0;
        border-radius: 0;
        margin-top: var(--space-2);
        box-shadow: none;
        border: none;
        background: transparent;
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: all !important;
        display: block !important;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    .menu-item-has-mega-menu.mega-menu-open .mega-menu-dropdown {
        max-height: 5000px;
        padding: var(--space-2) 0;
    }
    
    .menu-item-has-mega-menu .mega-menu-dropdown {
        transform: none !important;
        position: static !important;
    }
    
    .mega-menu-container {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .mega-menu-category-header {
        padding: var(--space-4) var(--space-5);
        border-radius: 4px;
        background: rgba(255, 255, 255, 0.95);
        min-height: auto;
    }
    
    .mega-menu-category-title {
        font-size: 1rem;
        font-weight: 600;
        min-width: auto;
    }
    
    .mega-menu-category-arrow {
        width: 14px;
        height: 14px;
    }
    
    .mega-menu-category-content {
        margin-left: var(--space-4);
        width: calc(100% - var(--space-4));
    }
    
    .mega-menu-link {
        padding: var(--space-2) var(--space-3);
        background: rgba(255, 255, 255, 0.9);
        border-radius: 4px;
    }
    
    .mega-menu-link-title {
        font-size: 0.875rem;
        font-weight: 500;
    }
    
    .mega-menu-link-desc {
        font-size: 0.75rem;
    }
    
    /* Categories are collapsed by default on mobile */
    .mega-menu-category-content {
        max-height: 0 !important;
        opacity: 0 !important;
        padding: 0 !important;
        transform: translateY(-10px) !important;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                    padding 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.3s ease,
                    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .mega-menu-category-header[aria-expanded="true"] + .mega-menu-category-content {
        max-height: 2000px !important;
        opacity: 1 !important;
        padding: var(--space-2) 0 var(--space-3) 0 !important;
        transform: translateY(0) !important;
    }
    
    /* Mega menu trigger styles for mobile */
    .mega-menu-trigger {
        width: 100%;
        text-align: left;
        justify-content: space-between;
        padding: var(--space-4) var(--space-5);
        font-size: 1.125rem;
        font-weight: 600;
        background: rgba(255, 255, 255, 0.6);
        border: 1px solid rgba(229, 231, 235, 0.5);
        border-radius: 12px;
        cursor: pointer;
        pointer-events: all;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        margin-bottom: var(--space-2);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    
    .mega-menu-trigger:hover,
    .mega-menu-trigger[aria-expanded="true"] {
        background: rgba(16, 185, 129, 0.08);
        border-color: rgba(16, 185, 129, 0.3);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(16, 185, 129, 0.12);
    }
    
    /* Mobile menu close button */
    .mobile-menu-close {
        position: fixed;
        bottom: var(--space-6);
        left: 50%;
        transform: translateX(-50%);
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.2));
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 2px solid rgba(16, 185, 129, 0.3);
        color: var(--color-secondary-dark);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        box-shadow: 
            0 8px 24px rgba(16, 185, 129, 0.2),
            0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: calc(var(--z-modal) + 1);
        opacity: 0;
        animation: fadeInUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s forwards;
    }
    
    .main-navigation.is-open .mobile-menu-close {
        opacity: 1;
    }
    
    .mobile-menu-close:hover {
        transform: translateX(-50%) scale(1.1);
        background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.3));
        box-shadow: 
            0 12px 32px rgba(16, 185, 129, 0.3),
            0 6px 16px rgba(0, 0, 0, 0.15);
    }
    
    .mobile-menu-close:active {
        transform: translateX(-50%) scale(0.95);
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateX(-50%) translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }
    }
    
    /* Hero */
    .hero-section {
        min-height: 500px;
        padding: var(--space-16) 0;
    }
    
    .hero-overlay {
        background: linear-gradient(
            135deg,
            rgba(255, 255, 255, 0.9) 0%,
            rgba(255, 255, 255, 0.85) 50%,
            rgba(255, 255, 255, 0.95) 100%
        );
    }
    
    .hero-section h1 {
        font-size: clamp(2rem, 8vw, 2.5rem);
        margin-bottom: var(--space-4);
    }
    
    .hero-section p {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-6);
    }
    
    /* Sections */
    .main-services-section,
    .usp-section,
    .services-section,
    .content-section,
    .testimonials-section,
    .about-preview-section,
    .news-section,
    .contact-preview-section {
        padding: var(--space-12) 0;
    }
    
    /* Header Actions */
    .header-actions {
        gap: var(--space-2);
    }
    
    /* Language Switcher */
    .lang-switcher-item {
        min-width: 36px;
        height: 28px;
        padding: 0 var(--space-2);
        font-size: 10px;
    }
    
    /* Navigation Menu */
    .section-nav-menu .nav-link {
        padding: var(--space-1) var(--space-2);
        font-size: var(--font-size-xs);
    }
    
    /* About Preview */
    .about-preview-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .about-preview-stats {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    /* Contact Team */
    .contact-team {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .contact-person {
        padding: var(--space-6);
    }
    
    .contact-person-image {
        width: 120px;
        height: 120px;
    }
    
    .contact-main-email {
        margin-top: var(--space-12);
        padding: var(--space-6);
    }
    
    .main-email-address {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: clamp(1.75rem, 6vw, 2.25rem);
        margin-bottom: var(--space-8);
    }
    
    /* Grids */
    .main-services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .usp-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    /* Cards */
    .main-service-card,
    .usp-item,
    .service-card {
        padding: var(--space-6);
    }
    
    .main-service-icon,
    .usp-icon,
    .service-card-icon {
        width: 56px;
        height: 56px;
        margin-bottom: var(--space-4);
    }
    
    .main-service-icon svg,
    .usp-icon svg,
    .service-card-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .main-service-card h3,
    .service-card h3 {
        font-size: var(--font-size-xl);
    }
    
    .usp-item h3 {
        font-size: var(--font-size-lg);
    }
    
    /* Buttons */
    .btn {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-base);
    }
    
    /* Footer */
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }
    
    .footer-widgets {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    /* Typography */
    html {
        font-size: 16px;
    }
    
    h1 { font-size: clamp(2rem, 8vw, 2.5rem); }
    h2 { font-size: clamp(1.75rem, 6vw, 2rem); }
    h3 { font-size: clamp(1.5rem, 5vw, 1.75rem); }
    
    p {
        font-size: var(--font-size-base);
        line-height: var(--line-height-relaxed);
    }
}

/* ============================================
   Tablet Styles (768px - 1279px)
   ============================================ */
@media (min-width: 768px) and (max-width: 1279px) {
    .container {
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-navigation {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        z-index: var(--z-modal);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        overflow-y: auto;
        padding: var(--space-8) var(--space-4);
    }
    
    .main-navigation[aria-expanded="true"],
    .main-navigation.is-open {
        transform: translateX(0);
    }
    
    .nav-menu {
        position: static;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--space-1);
        width: 100%;
        display: flex !important;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-lg);
    }
    
    .nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: var(--space-2) 0 var(--space-2) var(--space-4);
        background-color: var(--color-background-alt);
    }
    
    /* Dropdown Mega Menu Tablet Styles */
    .mega-menu-dropdown {
        position: static !important;
        left: 0 !important;
        right: 0 !important;
        transform: none !important;
        min-width: auto;
        max-width: 100%;
        padding: var(--space-4) var(--space-5);
        border-radius: 6px;
        margin-top: var(--space-2);
        box-shadow: none;
        border: 1px solid rgba(229, 231, 235, 0.5);
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: all !important;
        display: block !important;
    }
    
    .menu-item-has-mega-menu.mega-menu-open .mega-menu-dropdown,
    .menu-item-has-mega-menu .mega-menu-dropdown {
        transform: none !important;
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
    }
    
    .mega-menu-container {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .mega-menu-category-header {
        padding: var(--space-4) var(--space-5);
        border-radius: 4px;
        background: rgba(255, 255, 255, 0.95);
        min-height: auto;
    }
    
    .mega-menu-category-title {
        font-size: 1rem;
        font-weight: 600;
        min-width: auto;
    }
    
    .mega-menu-category-arrow {
        width: 14px;
        height: 14px;
    }
    
    .mega-menu-category-content {
        margin-left: var(--space-4);
        width: calc(100% - var(--space-4));
    }
    
    .mega-menu-link {
        padding: var(--space-2) var(--space-3);
        background: rgba(255, 255, 255, 0.9);
        border-radius: 4px;
    }
    
    .mega-menu-link-title {
        font-size: 0.875rem;
        font-weight: 500;
    }
    
    .mega-menu-link-desc {
        font-size: 0.75rem;
    }
    
    /* Make all categories expanded by default on tablet */
    .mega-menu-category-content {
        max-height: 2000px !important;
        opacity: 1 !important;
        padding: var(--space-1) 0 var(--space-2) 0 !important;
        transform: translateY(0) !important;
    }
    
    .mega-menu-category-header[aria-expanded="true"] + .mega-menu-category-content,
    .mega-menu-category-header + .mega-menu-category-content {
        max-height: 2000px !important;
        opacity: 1 !important;
        padding: var(--space-1) 0 var(--space-2) 0 !important;
        transform: translateY(0) !important;
    }
    
    /* Mega menu trigger styles for tablet - hide arrow since menu is always visible */
    .mega-menu-trigger {
        width: 100%;
        text-align: left;
        justify-content: space-between;
        padding: var(--space-3) var(--space-4);
        font-size: var(--font-size-lg);
        background: transparent;
        border: none;
        border-radius: 0;
        cursor: default;
        pointer-events: none;
    }
    
    .mega-menu-trigger .mega-menu-arrow {
        display: none;
    }
    
    .mega-menu-trigger:hover,
    .mega-menu-trigger[aria-expanded="true"] {
        background: transparent;
    }
    
    .hero-section {
        min-height: 550px;
        padding: var(--space-20) 0;
    }
    
    .hero-overlay {
        background: linear-gradient(
            135deg,
            rgba(255, 255, 255, 0.88) 0%,
            rgba(255, 255, 255, 0.8) 50%,
            rgba(255, 255, 255, 0.92) 100%
        );
    }
    
    .main-services-section,
    .usp-section,
    .services-section,
    .content-section {
        padding: var(--space-20) 0;
    }
    
    .main-services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }
    
    .service-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .service-card-content {
        width: 100%;
    }
    
    .usp-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }
    
    
    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Desktop Styles (1280px and up)
   ============================================ */
@media (min-width: 1280px) {
    /* Hide mobile menu close button on desktop */
    .mobile-menu-close {
        display: none !important;
    }
    .container {
        padding-left: var(--space-8);
        padding-right: var(--space-8);
    }
    
    .main-navigation {
        position: static;
        background: transparent;
        backdrop-filter: none;
        transform: none;
        padding: 0;
        overflow: visible;
    }
    
    .nav-menu {
        display: flex !important;
        position: static;
        flex-direction: row;
        align-items: center;
        width: auto;
        gap: var(--space-2);
    }
    
    .nav-menu li {
        width: auto;
    }
    
    .nav-menu a {
        width: auto;
        padding: var(--space-2) var(--space-4);
        font-size: var(--font-size-base);
    }
    
    .menu-toggle {
        display: none;
    }
    
    
    .hero-section {
        min-height: 600px;
        padding: var(--space-24) 0;
    }
    
    .main-services-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
    
    .usp-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--space-6);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
    
    .service-card {
        flex-direction: row;
        align-items: flex-start;
    }
    
    .footer-widgets {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* About Preview */
    .about-preview-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-16);
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
}

/* ============================================
   Large Desktop Styles (1280px and up)
   ============================================ */
@media (min-width: 1280px) {
    .container {
        max-width: var(--container-max-width);
    }
    
    .main-services-grid {
        gap: var(--space-10);
    }
    
    .usp-grid {
        gap: var(--space-8);
    }
    
    
    /* About Preview */
    .about-preview-content {
        gap: var(--space-20);
    }
    
    /* Testimonials */
    .testimonials-grid {
        gap: var(--space-10);
    }
}

/* ============================================
   Touch Device Optimizations
   ============================================ */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .main-service-card:hover,
    .usp-item:hover,
    .service-card:hover {
        transform: none;
    }
    
    /* Increase touch targets */
    .btn,
    .nav-menu a,
    .main-service-link {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Better spacing for touch */
    .nav-menu {
        gap: var(--space-1);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .btn,
    .menu-toggle {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* ============================================
   Accessibility - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   High Contrast Mode
   ============================================ */
@media (prefers-contrast: high) {
    .main-service-card,
    .usp-item,
    .service-card {
        border: 2px solid var(--color-text-primary);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}