/* ============================================
   MOBILE RESPONSIVE ENHANCEMENTS
   Modern Mobile-First UI/UX Improvements
   ============================================ */

/* Mobile Breakpoints */
:root {
    --mobile-breakpoint: 768px;
    --tablet-breakpoint: 992px;
    --desktop-breakpoint: 1200px;
    
    /* Touch-friendly sizes */
    --touch-target-min: 44px;
    --touch-target-ideal: 48px;
}

/* ============================================
   MOBILE HEADER & NAVIGATION
   ============================================ */

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none !important;
    width: var(--touch-target-ideal) !important;
    height: var(--touch-target-ideal) !important;
    min-width: var(--touch-target-ideal) !important;
    min-height: var(--touch-target-ideal) !important;
    background: var(--gray-100) !important;
    border: none !important;
    border-radius: var(--border-radius) !important;
    cursor: pointer !important;
    align-items: center !important;
    justify-content: center !important;
    color: var(--text-primary) !important;
    font-size: var(--font-size-lg) !important;
    transition: var(--transition-fast) !important;
    flex-shrink: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    position: relative !important;
    z-index: 1 !important;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex !important;
    }
}

.mobile-menu-toggle:hover {
    background: var(--gray-200);
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    max-width: 85vw;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile */
    background: var(--white);
    box-shadow: 2px 0 12px rgba(0,0,0,0.15);
    z-index: 10000;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    will-change: transform;
    visibility: hidden;
}

.mobile-nav-drawer.active {
    transform: translateX(0);
    visibility: visible;
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

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

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
    background: var(--primary);
    color: var(--white);
}

.mobile-nav-header .logo-modern {
    color: var(--white);
    font-size: var(--font-size-lg);
}

.mobile-nav-close {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.mobile-nav-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.mobile-nav-content {
    padding: var(--space-4);
}

.mobile-nav-item {
    display: flex !important;
    align-items: center !important;
    padding: var(--space-3) var(--space-4) !important;
    color: var(--text-primary) !important;
    text-decoration: none !important;
    border-radius: var(--border-radius) !important;
    margin-bottom: var(--space-1) !important;
    font-size: var(--font-size-base) !important;
    font-weight: var(--font-weight-medium) !important;
    transition: var(--transition-fast) !important;
    min-height: var(--touch-target-min) !important;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    background: var(--primary-bg) !important;
    color: var(--primary) !important;
}

.mobile-nav-item i {
    width: 24px !important;
    margin-right: var(--space-3) !important;
    text-align: center !important;
    flex-shrink: 0 !important;
}

/* ============================================
   MOBILE SIDEBAR DRAWER (Products Page)
   ============================================ */

.mobile-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.mobile-sidebar-toggle {
    display: none;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-4);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    cursor: pointer;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    box-shadow: var(--shadow-sm);
}

.mobile-sidebar-toggle i {
    font-size: var(--font-size-lg);
}

.mobile-sidebar-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 320px;
    max-width: 90vw;
    height: 100vh;
    background: var(--white);
    box-shadow: 2px 0 12px rgba(0,0,0,0.15);
    z-index: 10000;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-sidebar-drawer.active {
    transform: translateX(0);
}

.mobile-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
    background: var(--primary);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 10;
}

.mobile-sidebar-header h3 {
    color: var(--white);
    margin: 0;
    font-size: var(--font-size-lg);
}

.mobile-sidebar-close {
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
}

.mobile-sidebar-content {
    padding: var(--space-4);
}

/* ============================================
   TOUCH-FRIENDLY BUTTONS
   ============================================ */

/* Ensure all interactive elements meet touch target size */
button,
a.btn-modern,
.btn-modern,
input[type="submit"],
input[type="button"],
.category-header,
.mobile-nav-item {
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
}

/* Larger touch targets for primary actions */
.btn-primary-modern,
.btn-add-cart-modern,
.btn-add-to-cart-detail {
    min-height: var(--touch-target-ideal);
    padding: var(--space-3) var(--space-6);
}

/* ============================================
   MOBILE GRID SYSTEM
   ============================================ */

@media (max-width: 768px) {
    /* Force single column on mobile */
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5,
    .grid-6 {
        grid-template-columns: 1fr !important;
        gap: var(--space-4) !important;
    }
    
    /* Product grids - 2 columns on mobile */
    .product-grid,
    .grid-4.product-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--space-3) !important;
    }
    
    /* Category grid - 2 columns */
    .category-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--space-3) !important;
    }
}

@media (max-width: 480px) {
    /* Single column for very small screens */
    .product-grid {
        grid-template-columns: 1fr !important;
    }
}

/* ============================================
   MOBILE HEADER IMPROVEMENTS
   ============================================ */

@media (max-width: 768px) {
    .modern-header {
        height: var(--mobile-header-height) !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 1000 !important;
    }
    
    .header-content {
        gap: var(--space-2) !important;
        padding: 0 var(--space-3) !important;
    }
    
    .logo-modern {
        flex: 1;
        min-width: 0;
    }
    
    .logo-modern span {
        font-size: var(--font-size-sm) !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .mobile-menu-toggle {
        display: flex !important;
    }
    
    .modern-nav {
        display: none !important;
    }
    
    .header-actions {
        gap: var(--space-2) !important;
        flex-shrink: 0;
    }
    
    .header-action {
        padding: var(--space-1) !important;
        min-width: var(--touch-target-min) !important;
        min-height: var(--touch-target-min) !important;
    }
    
    .header-action-icon {
        font-size: var(--font-size-lg) !important;
    }
    
    .search-container {
        display: none !important;
    }
    
    /* Ensure mobile nav drawer is visible when active */
    .mobile-nav-drawer.active {
        transform: translateX(0) !important;
        visibility: visible !important;
    }
    
    .mobile-nav-overlay.active {
        opacity: 1 !important;
        visibility: visible !important;
    }
    
    /* Fix top spacing - add margin after top banner */
    .top-banner {
        margin-bottom: var(--space-4) !important;
    }
    
    /* Ensure first section has proper spacing - override inline styles */
    body > section:first-of-type,
    .top-banner + section,
    .top-banner + .section-modern {
        margin-top: 0 !important;
        padding-top: var(--space-6) !important;
    }
    
    /* Force hero section spacing on mobile - override all inline styles */
    .hero-section-mobile,
    section.hero-section-mobile,
    .section-modern.hero-section-mobile {
        padding-top: var(--space-6) !important;
        padding-bottom: var(--space-6) !important;
        margin-top: 0 !important;
    }
}

/* ============================================
   MOBILE PRODUCT CARDS
   ============================================ */

@media (max-width: 768px) {
    .product-card-modern {
        border-radius: var(--border-radius);
        overflow: hidden;
    }
    
    /* Make product image and title clickable area for navigation */
    .product-image-container {
        cursor: pointer;
    }
    
    .product-info-modern {
        padding: var(--space-3);
    }
    
    .product-title-modern {
        font-size: var(--font-size-sm);
        line-height: 1.4;
        margin-bottom: var(--space-1);
        cursor: pointer;
    }
    
    .product-price-modern {
        margin: var(--space-1) 0;
    }
    
    .product-price-current {
        font-size: var(--font-size-base);
    }
    
    /* Product overlay - always visible on mobile, no hover needed */
    .product-overlay {
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        background: transparent !important;
        padding: 0 !important;
        margin-top: var(--space-2);
        border-radius: 0;
        pointer-events: auto !important;
        z-index: 10 !important;
    }
    
    .product-overlay .btn-add-cart-modern {
        width: 100% !important;
        font-size: var(--font-size-sm) !important;
        padding: var(--space-3) var(--space-4) !important;
        background: var(--primary) !important;
        color: var(--white) !important;
        border-radius: var(--border-radius) !important;
        pointer-events: auto !important;
        cursor: pointer !important;
    }
    
    .product-overlay .btn-add-cart-modern:hover {
        background: var(--primary-dark) !important;
        color: var(--white) !important;
    }
    
    .product-overlay .btn-add-cart-modern:active {
        transform: scale(0.98) !important;
    }
    
    .product-overlay .btn-add-cart-modern span {
        display: inline !important;
    }
    
    /* Hide quick view button on mobile */
    .product-overlay .btn-quick-view {
        display: none !important;
    }
    
    /* Disable hover transform on mobile */
    .product-card-modern:hover {
        transform: none !important;
    }
    
    .product-card-modern:hover .product-image {
        transform: none !important;
    }
    
    /* Ensure wishlist button is clickable */
    .product-wishlist-modern {
        pointer-events: auto !important;
        z-index: 11 !important;
    }
}

/* ============================================
   MOBILE FORMS
   ============================================ */

@media (max-width: 768px) {
    input,
    textarea,
    select {
        font-size: 16px !important; /* Prevents zoom on iOS */
        min-height: var(--touch-target-min);
        padding: var(--space-3);
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        width: 100%;
        font-size: 16px !important;
    }
    
    .form-row {
        grid-template-columns: 1fr !important;
    }
    
    .form-grid {
        grid-template-columns: 1fr !important;
    }
}

/* ============================================
   MOBILE MODALS
   ============================================ */

@media (max-width: 768px) {
    .modal-content {
        width: 95vw !important;
        max-width: 95vw !important;
        max-height: 90vh !important;
        margin: var(--space-4);
        padding: var(--space-4) !important;
        border-radius: var(--border-radius-lg);
    }
    
    .modal-close {
        top: var(--space-2);
        right: var(--space-2);
        width: var(--touch-target-min);
        height: var(--touch-target-min);
    }
}

/* ============================================
   MOBILE SIDEBAR (Products Page)
   ============================================ */

@media (max-width: 992px) {
    .products-layout {
        grid-template-columns: 1fr !important;
    }
    
    .sidebar-modern {
        display: none !important;
    }
    
    .mobile-sidebar-toggle {
        display: flex !important;
    }
    
    /* Ensure products content takes full width */
    .products-content {
        width: 100% !important;
    }
}

/* ============================================
   MOBILE FOOTER
   ============================================ */

@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr !important;
        gap: var(--space-6) !important;
    }
    
    .footer-col {
        margin-bottom: var(--space-6);
    }
    
    .footer-col:last-child {
        margin-bottom: 0;
    }
    
    .footer-payment {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
    }
    
    /* Add padding bottom for mobile bottom nav */
    .footer {
        padding-bottom: calc(var(--space-4) + 70px) !important;
    }
    
    body {
        padding-bottom: 70px !important;
    }
}

/* ============================================
   MOBILE BOTTOM NAVIGATION BAR
   ============================================ */

.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
    z-index: 9998;
    padding: var(--space-2) 0 calc(var(--space-2) + env(safe-area-inset-bottom));
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex !important;
        justify-content: space-around;
        align-items: center;
    }
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    transition: var(--transition-fast);
    position: relative;
    flex: 1;
    min-height: 60px;
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav-item i {
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.bottom-nav-item span:not(.bottom-nav-badge) {
    font-size: 11px;
    line-height: 1.2;
}

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item.active i {
    transform: scale(1.1);
}

.bottom-nav-item:active {
    transform: scale(0.95);
    opacity: 0.7;
}

.bottom-nav-badge {
    position: absolute;
    top: 4px;
    right: 8px;
    background: var(--error);
    color: var(--white);
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    padding: 0 4px;
    line-height: 1;
    transition: transform 0.3s ease;
}

.bottom-nav-badge:not(:empty) {
    display: flex;
}

/* Hide bottom nav on specific pages if needed */
.admin-body .mobile-bottom-nav,
.pos-body .mobile-bottom-nav {
    display: none !important;
}

/* ============================================
   MOBILE SPACING OPTIMIZATIONS
   ============================================ */

@media (max-width: 768px) {
    .section-modern {
        padding: var(--space-6) 0 !important;
    }
    
    .section-modern:first-of-type {
        padding-top: var(--space-4) !important;
    }
    
    /* Hero section mobile optimization */
    .section-modern[style*="padding: var(--space-16)"] {
        padding: var(--space-8) 0 var(--space-6) 0 !important;
    }
    
    .container {
        padding: 0 var(--space-4) !important;
    }
    
    .section-title-modern {
        font-size: var(--font-size-xl) !important;
        margin-bottom: var(--space-3) !important;
        line-height: 1.3 !important;
    }
    
    .section-subtitle-modern {
        font-size: var(--font-size-sm) !important;
        line-height: 1.5 !important;
    }
    
    /* Grid 2 column on mobile for hero */
    .grid.grid-2 {
        grid-template-columns: 1fr !important;
        gap: var(--space-6) !important;
    }
    
    /* Hero buttons stack on mobile */
    .hero-buttons-mobile {
        flex-direction: column !important;
    }
    
    .hero-buttons-mobile .btn-modern {
        width: 100% !important;
        justify-content: center !important;
    }
    
    /* Hero image hide on very small screens */
    .hero-image-mobile {
        display: none !important;
    }
    
    /* Hero text center on mobile */
    .hero-title-mobile,
    .hero-subtitle-mobile {
        text-align: center !important;
    }
    
    /* Top banner mobile */
    .top-banner {
        font-size: 11px !important;
        padding: var(--space-2) 0 !important;
        line-height: 1.4 !important;
    }
    
    .top-banner .container {
        flex-direction: column !important;
        gap: var(--space-1) !important;
        text-align: center !important;
    }
    
    /* Add spacing after top banner */
    .top-banner {
        margin-bottom: var(--space-4) !important;
    }
    
    /* Add padding to first section after top banner - override inline styles */
    .top-banner + section,
    .top-banner + .section-modern,
    body > section:first-of-type {
        padding-top: var(--space-6) !important;
        margin-top: 0 !important;
    }
    
    /* Hero section mobile spacing - override inline style with !important */
    .hero-section-mobile,
    section.hero-section-mobile,
    .section-modern.hero-section-mobile {
        padding-top: var(--space-6) !important;
        padding-bottom: var(--space-6) !important;
        margin-top: 0 !important;
    }
}

/* ============================================
   MOBILE TYPOGRAPHY
   ============================================ */

@media (max-width: 768px) {
    h1 {
        font-size: var(--font-size-2xl) !important;
        line-height: 1.3;
    }
    
    h2 {
        font-size: var(--font-size-xl) !important;
        line-height: 1.3;
    }
    
    h3 {
        font-size: var(--font-size-lg) !important;
    }
    
    body {
        font-size: var(--font-size-base);
        line-height: 1.6;
    }
}

/* ============================================
   MOBILE UTILITIES
   ============================================ */

/* Hide on mobile */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
}

/* Show only on mobile */
.mobile-only {
    display: none;
}

@media (max-width: 768px) {
    .mobile-only {
        display: block !important;
    }
}

/* Safe area for notched devices */
@supports (padding: max(0px)) {
    .mobile-nav-drawer,
    .mobile-sidebar-drawer {
        padding-left: max(var(--space-4), env(safe-area-inset-left));
        padding-right: max(var(--space-4), env(safe-area-inset-right));
    }
}

/* ============================================
   MOBILE PERFORMANCE
   ============================================ */

@media (max-width: 768px) {
    /* Reduce animations on mobile for better performance */
    * {
        animation-duration: 0.2s !important;
        transition-duration: 0.2s !important;
    }
    
    /* Disable hover effects on touch devices */
    @media (hover: none) {
        .product-card-modern:hover {
            transform: none;
        }
        
        .btn-modern:hover {
            transform: none;
        }
    }
}

/* ============================================
   MOBILE ACCESSIBILITY
   ============================================ */

@media (max-width: 768px) {
    /* Ensure sufficient contrast */
    a, button {
        color: var(--text-primary);
    }
    
    /* Larger focus indicators */
    *:focus {
        outline: 3px solid var(--primary);
        outline-offset: 2px;
    }
    
    /* Prevent text selection on buttons */
    button, .btn-modern {
        -webkit-tap-highlight-color: rgba(255, 96, 0, 0.2);
        user-select: none;
        -webkit-user-select: none;
    }
}