/* ====================================
   MECHATRONICS STORE — PRODUCTION CSS
   Optimized for Performance & Accessibility
   ==================================== */

/* ====================================
   1. CSS VARIABLES
   ==================================== */
:root {
    --primary-navy: #1a237e;
    --primary-blue: #3f51b5;
    --light-blue: #e3f2fd;
    --accent-blue: #2196f3;
    --dark-navy: #0d47a1;
    --dark-blue: #172554;
    --success-green: #388e3c; /* darker for WCAG AA contrast */
    --warning-orange: #e65100;
    --error-red: #c62828;   /* darker for WCAG AA contrast */
    --gradient-primary: linear-gradient(135deg, #1a237e 0%, #3f51b5 100%);
    --gradient-secondary: linear-gradient(135deg, #2196f3 0%, #1a237e 100%);
    --gradient-light: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    --gradient-hero: linear-gradient(135deg, #1a237e 0%, #3f51b5 50%, #2196f3 100%);
    --gradient-blue: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
    --text-dark: #1a1a1a;
    --text-light: #555555; /* Improved contrast */
    --text-primary: #1f2937;
    --text-secondary: #4b5563; /* Improved contrast */
    --white: #ffffff;
    --light-gray: #f8fafc;
    --border-color: #d1d5db;
    --shadow-soft: 0 4px 20px rgba(26,35,126,.1);
    --shadow-strong: 0 8px 30px rgba(26,35,126,.2);
    --shadow-hero: 0 20px 60px rgba(26,35,126,.3);
    --shadow: 0 4px 6px -1px rgb(0 0 0/.1),0 2px 4px -2px rgb(0 0 0/.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0/.1),0 4px 6px -4px rgb(0 0 0/.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0/.1),0 8px 10px -6px rgb(0 0 0/.1);
    --border-radius: 12px;
    --border-radius-small: 6px;
    --border-radius-lg: 0.75rem;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
    --transition-fast: all .2s cubic-bezier(.4,0,.2,1);
    --focus-ring: 0 0 0 3px rgba(33,150,243,.4);
}

/* ====================================
   2. RESET & BASE
   ==================================== */
*, *::before, *::after {
    margin: 0; padding: 0;
    box-sizing: border-box;
}
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100% }
[dir="rtl"] { font-family: 'Cairo', 'Tajawal', Arial, sans-serif }
[dir="ltr"] { font-family: Arial, 'Helvetica Neue', sans-serif }
body {
    font-family: Arial, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: #f8f9fa;
    overflow-x: hidden;
    padding-top: 80px;
}
img { display: block; max-width: 100%; height: auto }
a { color: inherit; text-decoration: none }
button { font-family: inherit; cursor: pointer }

/* Skip link - Accessibility */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    padding: 8px 16px;
    background: var(--primary-navy);
    color: #fff;
    border-radius: 4px;
    font-weight: 600;
    z-index: 9999;
    text-decoration: none;
}
.skip-link:focus {
    left: 8px;
    outline: var(--focus-ring);
}

/* Focus styles - Accessibility */
:focus-visible {
    outline: 3px solid var(--accent-blue);
    outline-offset: 2px;
}
/* Remove outline for mouse users */
:focus:not(:focus-visible) { outline: none }

/* Visually hidden utility */
.visually-hidden {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ====================================
   3. UTILITIES
   ==================================== */
.container { max-width: 1400px; margin: 0 auto; padding: 0 20px }
.content-en, .content-ar { display: none !important }
[dir="ltr"] .content-en { display: revert !important }
[dir="rtl"] .content-ar { display: revert !important }
.hidden { display: none !important }

/* Loading skeleton */
.loading-skeleton {
    background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: 4px;
}
@keyframes skeleton-pulse {
    0% { background-position: 200% 0 }
    100% { background-position: -200% 0 }
}
@media (prefers-reduced-motion: reduce) {
    .loading-skeleton { animation: none; background: #e0e0e0 }
}

/* ====================================
   4. HEADER
   ==================================== */
.header {
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-soft);
    position: fixed; top: 0; width: 100%;
    z-index: 1000; padding: 12px 0;
    transition: var(--transition);
    will-change: padding, box-shadow;
}
.header.scrolled {
    padding: 8px 0;
    box-shadow: var(--shadow-strong);
}
.header-content {
    display: flex; align-items: center;
    justify-content: space-between;
    gap: 1.5rem; height: 56px;
}

/* Logo */
.logo {
    display: flex; align-items: center;
    font-size: 1.5rem; font-weight: 800;
    color: var(--primary-navy);
    transition: var(--transition);
    gap: 10px; flex-shrink: 0;
}
.logo:hover { color: var(--primary-blue); transform: translateY(-1px) }
.logo img { width: 80px; height: 80px; object-fit: contain; border-radius: 8px }
.logo-text { display: block; font-family: Arial, 'Helvetica Neue', sans-serif }

/* Navigation */
.nav-menu {
    display: flex; align-items: center;
    gap: 1.5rem; list-style: none; margin: 0;
}
.nav-link {
    color: var(--text-dark); font-weight: 600;
    position: relative; transition: var(--transition);
    padding: 8px 12px; border-radius: var(--border-radius-small);
    font-size: 0.9rem;
}
.nav-link:hover { color: var(--primary-blue); background: var(--light-blue) }
.nav-link[aria-current="page"] { color: var(--primary-blue) }
.nav-link::after {
    content: ''; position: absolute;
    bottom: 2px; left: 50%;
    width: 0; height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}
.nav-link:hover::after { width: 80% }

/* Nav Actions */
.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0 }
.action-btn {
    display: flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; border: none;
    border-radius: var(--border-radius); cursor: pointer;
    transition: var(--transition); font-size: 1.1rem;
    position: relative; background: transparent;
    color: var(--primary-navy);
}
.action-btn:hover {
    background: var(--light-blue); color: var(--primary-blue);
    transform: translateY(-1px); box-shadow: var(--shadow-soft);
}
.icon-badge {
    position: absolute; top: -6px; right: -6px;
    background: var(--warning-orange); color: #fff;
    padding: 2px 5px; border-radius: 50%;
    font-size: .65rem; font-weight: 700;
    min-width: 18px; height: 18px;
    display: flex; align-items: center; justify-content: center; z-index: 2;
    line-height: 1;
}
[dir="rtl"] .icon-badge { right: auto; left: -6px }

/* Auth Buttons */
.auth-buttons { display: flex; align-items: center; gap: 6px }
.auth-btn {
    padding: 8px 14px; border: none;
    border-radius: var(--border-radius); cursor: pointer;
    transition: var(--transition); font-weight: 600;
    font-size: .85rem; display: inline-flex;
    align-items: center; gap: 6px; white-space: nowrap; height: 42px;
}
.auth-btn.primary { background: var(--gradient-primary); color: #fff; box-shadow: var(--shadow-soft) }
.auth-btn.outline {
    background: transparent; color: var(--primary-navy);
    border: 2px solid var(--primary-navy);
}
.auth-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-strong) }
.auth-btn.outline:hover { background: var(--primary-navy); color: #fff }

/* Language Toggle */
.lang-toggle {
    padding: 8px 16px; border: 2px solid var(--primary-navy);
    border-radius: var(--border-radius); background: transparent;
    color: var(--primary-navy); font-weight: 600;
    font-size: .85rem; transition: var(--transition);
    display: flex; align-items: center; gap: 6px; height: 42px;
}
.lang-toggle:hover { background: var(--primary-navy); color: #fff; transform: translateY(-1px) }

/* User Icon */
.user-icon {
    display: flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; border-radius: var(--border-radius);
    background: transparent; color: var(--primary-navy);
    cursor: pointer; font-size: 1.2rem;
    transition: var(--transition); border: none; position: relative;
}
.user-icon:hover {
    background: var(--light-blue); color: var(--primary-blue);
    transform: translateY(-1px); box-shadow: var(--shadow-soft);
}

/* ====================================
   5. DROPDOWNS
   ==================================== */
.dropdown {
    position: absolute; top: calc(100% + 15px); right: 0;
    background: #fff; border-radius: var(--border-radius);
    box-shadow: var(--shadow-strong); min-width: 200px; z-index: 2000;
    border: 1px solid rgba(0,0,0,.05); overflow: hidden;
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: var(--transition);
}
.dropdown.show { opacity: 1; visibility: visible; transform: translateY(0) }
[dir="rtl"] .dropdown { right: auto; left: 0 }
.dropdown-item {
    display: flex; align-items: center;
    padding: 12px 16px; color: var(--text-dark);
    transition: var(--transition-fast); gap: 10px;
    border: none; background: none; width: 100%;
    text-align: start; cursor: pointer; font-size: .9rem;
}
.dropdown-item:hover { background: var(--light-blue) }

/* Cart & Wishlist Dropdowns */
.cart-dropdown, .wishlist-dropdown {
    position: absolute; top: calc(100% + 15px); right: 0;
    background: #fff; border-radius: var(--border-radius);
    box-shadow: var(--shadow-strong); min-width: 350px; max-width: 400px;
    z-index: 2000; border: 1px solid rgba(0,0,0,.05);
    max-height: 500px; overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: var(--transition);
}
.cart-dropdown.show, .wishlist-dropdown.show {
    opacity: 1; visibility: visible; transform: translateY(0)
}
[dir="rtl"] .cart-dropdown,
[dir="rtl"] .wishlist-dropdown { right: auto; left: 0 }
.dropdown-header {
    padding: 1.5rem;
    border-bottom: 1px solid #f0f0f0;
    display: flex; justify-content: space-between; align-items: center;
}
.dropdown-title {
    font-size: 1.1rem; font-weight: 700; color: var(--primary-navy);
    display: flex; align-items: center; gap: 8px;
}
.dropdown-empty { padding: 3rem 2rem; text-align: center; color: var(--text-light) }
.dropdown-empty i { font-size: 3rem; margin-bottom: 1rem; opacity: .5 }
.dropdown-items { padding: 0 }
.dropdown-item-card {
    display: flex; align-items: center;
    padding: 1rem 1.5rem; border-bottom: 1px solid #f0f0f0;
    gap: 1rem; transition: var(--transition-fast);
}
.dropdown-item-card:hover { background: #f8f9fa }
.dropdown-item-card:last-child { border-bottom: none }
.item-image {
    width: 50px; height: 50px; border-radius: var(--border-radius-small);
    background: var(--light-blue); display: flex; align-items: center;
    justify-content: center; flex-shrink: 0; overflow: hidden;
}
.item-image img { width: 100%; height: 100%; object-fit: cover }
.item-details { flex: 1; min-width: 0 }
.item-name {
    font-weight: 600; color: var(--text-dark); font-size: .9rem;
    margin-bottom: .25rem; overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
}
.item-price { color: var(--accent-blue); font-weight: 700; font-size: .85rem }
.item-controls { display: flex; align-items: center; gap: .5rem }
.quantity-input {
    width: 50px; padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px; text-align: center; font-size: .85rem;
}
.quantity-input:focus { outline: none; border-color: var(--primary-blue); box-shadow: var(--focus-ring) }
.remove-btn {
    background: var(--error-red); color: #fff; border: none;
    border-radius: 4px; padding: 6px 8px; font-size: .75rem;
    transition: var(--transition-fast);
    display: flex; align-items: center; justify-content: center;
}
.remove-btn:hover { background: #b71c1c; transform: translateY(-1px) }
.dropdown-total { padding: 1rem 1.5rem; border-top: 2px solid #f0f0f0; background: #f8f9fa }
.total-row {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 1.1rem; font-weight: 700; color: var(--primary-navy);
}
.dropdown-actions { padding: 1rem 1.5rem; display: flex; gap: .5rem }
.btn-action {
    flex: 1; padding: 12px; border: none;
    border-radius: var(--border-radius-small); cursor: pointer;
    font-weight: 600; transition: var(--transition);
    display: flex; align-items: center; justify-content: center;
    gap: 6px; font-size: .85rem;
}
.btn-view { background: var(--gradient-primary); color: #fff }
.btn-checkout { background: var(--success-green); color: #fff }
.btn-action:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft) }

/* ====================================
   6. MOBILE MENU
   ==================================== */
.mobile-menu-toggle {
    display: none; background: none; border: none;
    font-size: 1.3rem; color: var(--primary-navy);
    width: 42px; height: 42px; border-radius: var(--border-radius);
    transition: var(--transition);
}
.mobile-menu-toggle:hover { background: var(--light-blue); color: var(--primary-blue) }
.mobile-menu-overlay {
    position: fixed; inset: 0; background: #fff; z-index: 2500;
    display: flex; flex-direction: column;
    opacity: 0; visibility: hidden; transition: var(--transition);
    transform: translateX(-100%);
}
.mobile-menu-overlay.show { opacity: 1; visibility: visible; transform: translateX(0) }
[dir="rtl"] .mobile-menu-overlay { transform: translateX(100%) }
[dir="rtl"] .mobile-menu-overlay.show { transform: translateX(0) }
.mobile-menu-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px; border-bottom: 1px solid #f0f0f0; background: #f8f9fa;
}
.mobile-menu-logo { display: flex; align-items: center; gap: 12px; color: var(--primary-navy); font-size: 1.2rem; font-weight: 700 }
.mobile-menu-logo img { width: 40px; height: 40px; border-radius: 6px }
.mobile-menu-close {
    background: var(--light-blue); border: none; color: var(--primary-navy);
    font-size: 1.5rem; width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition-fast);
}
.mobile-menu-close:hover { background: var(--primary-blue); color: #fff }
.mobile-menu-content { flex: 1; display: flex; flex-direction: column; overflow-y: auto; padding: 20px 0 }
.mobile-nav-section { padding: 0 }
.mobile-nav-link {
    display: flex; align-items: center; gap: 15px;
    padding: 15px 20px; color: var(--text-dark);
    transition: var(--transition-fast); font-size: 1rem;
    font-weight: 500; border: none; background: none;
    width: 100%; text-align: start;
}
.mobile-nav-link:hover { background: var(--light-blue); color: var(--primary-blue) }
.mobile-nav-link i { width: 20px; text-align: center; font-size: 1.1rem; color: var(--primary-navy) }
.mobile-user-action {
    display: flex; align-items: center; gap: 15px;
    padding: 10px 20px; color: var(--text-dark);
    border-bottom: 1px solid #f0f0f0; transition: var(--transition-fast);
    font-size: .95rem; font-weight: 500;
    background: none; border-left: none; border-right: none; border-top: none;
    width: 100%; text-align: start;
}
.mobile-user-action:hover { color: var(--primary-blue) }
.mobile-user-action.danger { color: var(--error-red) }
.mobile-user-action.danger:hover { color: #b71c1c }
.mobile-auth-section { margin-top: auto; padding: 20px; border-top: 1px solid #f0f0f0; background: #f8f9fa }
.mobile-auth-message { text-align: center; color: var(--text-light); margin-bottom: 20px; font-size: .9rem }
.mobile-auth-buttons { display: flex; flex-direction: column; gap: 12px }
.mobile-auth-btn {
    display: flex; align-items: center; justify-content: center;
    gap: 10px; padding: 14px 20px; border: none;
    border-radius: var(--border-radius); font-weight: 600; font-size: .95rem;
    transition: var(--transition);
}
.mobile-auth-btn.primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 15px rgba(26,35,126,.3) }
.mobile-auth-btn.outline { background: transparent; color: var(--primary-navy); border: 2px solid var(--primary-navy) }
.mobile-auth-btn:hover { transform: translateY(-1px) }
.mobile-auth-btn.outline:hover { background: var(--primary-navy); color: #fff }

/* ====================================
   7. SEARCH OVERLAY
   ==================================== */
.search-overlay {
    position: fixed; inset: 0;
    background: rgba(26,35,126,.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000; display: flex;
    align-items: flex-start; justify-content: center;
    padding-top: 100px;
    opacity: 0; visibility: hidden; transition: var(--transition);
}
.search-overlay.show { opacity: 1; visibility: visible }
.search-container {
    background: #fff; border-radius: var(--border-radius);
    box-shadow: var(--shadow-strong); max-width: 600px;
    width: 90%; padding: 2rem;
    transform: translateY(-30px); transition: var(--transition);
}
.search-overlay.show .search-container { transform: translateY(0) }
.search-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem }
.search-title {
    font-size: 1.4rem; font-weight: 700; color: var(--primary-navy);
    display: flex; align-items: center; gap: 10px;
}
.search-close {
    background: none; border: none; font-size: 1.5rem;
    color: var(--text-light); padding: 8px; border-radius: 50%;
    transition: var(--transition-fast);
}
.search-close:hover { background: var(--light-blue); color: var(--primary-blue) }
.search-input-container { position: relative; margin-bottom: 1rem }
.search-input {
    width: 100%; padding: 16px 50px 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius); font-size: 1rem;
    transition: var(--transition); background: #fafafa;
    font-family: inherit;
}
[dir="rtl"] .search-input { padding: 16px 20px 16px 50px }
.search-input:focus {
    outline: none; border-color: var(--primary-blue);
    background: #fff; box-shadow: var(--focus-ring);
}
.search-btn {
    position: absolute; top: 50%; right: 15px;
    transform: translateY(-50%);
    background: var(--gradient-primary); border: none;
    border-radius: var(--border-radius-small); color: #fff;
    padding: 8px 12px; transition: var(--transition);
}
[dir="rtl"] .search-btn { right: auto; left: 15px }
.search-btn:hover { background: var(--gradient-secondary) }
.search-btn:disabled { opacity: .5; cursor: not-allowed }

/* Suggestions */
.search-suggestions-enhanced { margin-top: 20px; animation: slideDown .3s ease-out }
.suggestions-header {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-navy);
}
.suggestions-count { font-size: .9rem; color: var(--text-secondary); font-weight: 500 }
.suggestions-list {
    display: flex; flex-direction: column; gap: 12px;
    max-height: 300px; overflow-y: auto; padding-inline-end: 8px;
    list-style: none;
}
.suggestions-list::-webkit-scrollbar { width: 6px }
.suggestions-list::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 3px }
.suggestions-list::-webkit-scrollbar-thumb { background: var(--primary-navy); border-radius: 3px }
.suggestion-item {
    display: flex; align-items: center; gap: 16px;
    padding: 12px; background: #fff;
    border: 1px solid var(--border-color); border-radius: 12px;
    cursor: pointer; transition: all .3s ease;
}
.suggestion-item:hover {
    background: #f9fafb; border-color: var(--primary-navy);
    transform: translateX(-4px);
    box-shadow: 0 4px 12px rgba(26,35,126,.1);
}
[dir="rtl"] .suggestion-item:hover { transform: translateX(4px) }
.suggestion-image {
    width: 60px; height: 60px; flex-shrink: 0;
    border-radius: 8px; overflow: hidden; background: #f3f4f6;
    display: flex; align-items: center; justify-content: center;
}
.suggestion-image img { width: 100%; height: 100%; object-fit: cover }
.placeholder-icon { font-size: 1.5rem; color: var(--primary-navy); opacity: .4 }
.suggestion-info { flex: 1; min-width: 0 }
.suggestion-name {
    margin: 0 0 6px; font-size: .95rem; font-weight: 600;
    color: var(--text-primary); overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap;
}
.suggestion-category {
    margin: 0 0 8px; font-size: .85rem; color: var(--text-secondary);
    display: flex; align-items: center; gap: 6px;
}
.suggestion-price { display: flex; align-items: center; gap: 8px; font-weight: 600 }
.price-sale { color: var(--success-green); font-size: 1rem }
.price-original { color: var(--text-secondary); font-size: .85rem; text-decoration: line-through }
.price-current { color: var(--primary-navy); font-size: 1rem }
.suggestion-arrow {
    flex-shrink: 0; width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: var(--primary-navy); color: #fff;
    border-radius: 50%; font-size: .85rem; transition: transform .3s;
}
.suggestion-item:hover .suggestion-arrow { transform: translateX(4px) }
[dir="rtl"] .suggestion-item:hover .suggestion-arrow { transform: translateX(-4px) }
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px) }
    to { opacity: 1; transform: translateY(0) }
}

/* Search Results */
.search-results { max-height: 400px; overflow-y: auto }
.search-results-header {
    padding: 12px 16px; border-bottom: 1px solid #f0f0f0;
    background: #f8f9fa; display: flex; align-items: center; gap: 8px;
}
.results-count { color: var(--text-light); font-size: .8rem }
.search-product-list { max-height: 320px; overflow-y: auto; list-style: none; padding: 0 }
.search-product-item {
    display: flex; align-items: center;
    padding: 12px 16px; border-bottom: 1px solid #f0f0f0;
    cursor: pointer; transition: var(--transition-fast); gap: 12px;
}
.search-product-item:hover { background: var(--light-blue) }
.search-product-item:last-child { border-bottom: none }
.search-product-item .product-image {
    width: 50px; height: 50px; border-radius: var(--border-radius-small);
    background: var(--light-blue); display: flex; align-items: center;
    justify-content: center; flex-shrink: 0; overflow: hidden;
}
.search-product-item .product-image img { width: 100%; height: 100%; object-fit: cover }
.search-product-item .product-info { flex: 1; min-width: 0 }
.search-product-item .product-name {
    font-weight: 600; color: var(--text-dark); font-size: .9rem;
    margin: 0 0 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.search-product-item .product-category { color: var(--text-light); font-size: .8rem; margin: 0 0 4px }
.search-product-item .product-price { display: flex; align-items: center; gap: 8px; margin-bottom: 4px }
.search-product-item .sale-price { color: var(--accent-blue); font-weight: 700; font-size: .85rem }
.search-product-item .original-price { color: var(--text-light); font-size: .8rem; text-decoration: line-through }
.search-product-item .current-price { color: var(--accent-blue); font-weight: 700; font-size: .85rem }
.view-all-results, .view-all-suggestions {
    padding: 16px; border-top: 1px solid #f0f0f0; background: #f8f9fa; text-align: center;
}
.btn-view-all {
    background: var(--gradient-primary); color: #fff; border: none;
    border-radius: var(--border-radius); padding: 12px 24px;
    font-weight: 600; font-size: .9rem; transition: var(--transition); width: 100%;
    font-family: inherit;
}
.btn-view-all:hover { background: var(--gradient-secondary); transform: translateY(-1px); box-shadow: var(--shadow-soft) }
.loading-spinner {
    display: flex; justify-content: center; align-items: center;
    padding: 2rem; color: var(--text-light);
}
.spinner {
    width: 32px; height: 32px;
    border: 3px solid #f3f3f3; border-top: 3px solid var(--primary-blue);
    border-radius: 50%; animation: spin .8s linear infinite;
    flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg) } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; border-top-color: var(--primary-blue) } }

/* ====================================
   8. OVERLAY
   ==================================== */
.overlay { position: fixed; inset: 0; z-index: 0; background: transparent }

/* ====================================
   9. HERO SECTION
   ==================================== */
.hero-section {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; overflow: hidden;
}
.hero-background {
    position: absolute; inset: 0;
    background-image: url(../images/Mechatronics_blog.png);
    background-size: cover; background-position: center;
    filter: brightness(.65); z-index: 0;
    transform: scaleX(1);
    transition: transform .6s cubic-bezier(.4, 0, .2, 1),
                filter .6s ease;
    will-change: transform;
}
.hero-background.hero-bg-rtl {
    transform: scaleX(-1);
}
/* Subtle brightness pulse on lang switch */
.hero-background.hero-lang-switching {
    filter: brightness(.45);
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to right,rgba(23,37,84,.95) 0%,rgba(23,37,84,.65) 50%,transparent 100%);
    z-index: 1;
}
[dir="rtl"] .hero-overlay { background: linear-gradient(to left,rgba(23,37,84,.95) 0%,rgba(23,37,84,.65) 50%,transparent 100%) }
.hero-content {
    position: relative; z-index: 2;
    max-width: 1400px; width: 100%;
    margin: 0 auto; padding: 0 50px;
}
.content-wrapper { max-width: 600px }
[dir="rtl"] .content-wrapper { text-align: right }
.subtitle {
    color: var(--light-blue); font-size: 18px; font-weight: 700;
    margin-bottom: 15px; text-transform: uppercase;
    letter-spacing: 2px; animation: fadeInUp .8s ease both;
    font-family: Arial, 'Helvetica Neue', sans-serif;
}
h1 {
    color: var(--white); font-size: 56px; font-weight: 800;
    line-height: 1.15; margin-bottom: 25px;
    animation: fadeInUp 1s ease both;
    font-family: Arial, 'Helvetica Neue', sans-serif;
}
.description {
    color: #b8d4e8; font-size: 20px; line-height: 1.7;
    margin-bottom: 40px; animation: fadeInUp 1.2s ease both;
}
.cta-buttons { display: flex; gap: 20px; animation: fadeInUp 1.4s ease both }
[dir="rtl"] .cta-buttons { flex-direction: row }
.btn {
    padding: 16px 40px; font-size: 18px; font-weight: 700;
    border: none; border-radius: 50px; cursor: pointer;
    transition: var(--transition); display: inline-flex;
    align-items: center; justify-content: center;
    font-family: inherit;
}
.btn-primary { background: var(--gradient-blue); color: var(--white); box-shadow: var(--shadow-lg) }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 20px 25px -5px rgba(30,58,138,.35) }
.btn-secondary {
    background: transparent; color: var(--white);
    border: 2px solid var(--light-blue); box-shadow: var(--shadow);
}
.btn-secondary:hover { background: rgba(59,130,246,.12); transform: translateY(-3px); box-shadow: var(--shadow-lg) }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px) }
    to { opacity: 1; transform: translateY(0) }
}
@media (prefers-reduced-motion: reduce) {
    .subtitle, h1, .description, .cta-buttons { animation: none }
}

/* ====================================
   10. SECTION SHARED STYLES
   ==================================== */
.section-header { text-align: center; margin-bottom: 60px }
.section-title {
    font-size: 2.5rem; font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 16px;
    font-family: Arial, 'Helvetica Neue', sans-serif;
}
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto }

/* ====================================
   11. CATEGORIES SECTION
   ==================================== */
.categories-section { padding: 80px 0; background: #fff }
.categories-carousel-container { position: relative; overflow: hidden; border-radius: var(--border-radius); padding: 0 10px }
.categories-carousel-track {
    display: flex; gap: 24px;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
    padding: 20px 0; direction: ltr;
}
[dir="rtl"] .categories-carousel-track { direction: ltr }
[dir="rtl"] .category-card { direction: rtl }
.category-card {
    flex: 0 0 300px; background: #fff;
    border-radius: var(--border-radius); box-shadow: var(--shadow-soft);
    overflow: hidden; transition: var(--transition);
    cursor: pointer; position: relative; contain: layout style paint;
    border: 1px solid var(--border-color);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-strong) }
.category-card:focus { outline: 3px solid var(--accent-blue); outline-offset: 2px }
.category-image {
    position: relative; width: 100%; height: 200px; overflow: hidden;
    background: var(--light-blue); display: flex; align-items: center; justify-content: center;
}
.category-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition) }
.category-card:hover .category-image img { transform: scale(1.08) }
.category-image i { font-size: 4rem; color: var(--primary-navy); opacity: .3; display: none }
.category-info { padding: 24px }
.category-name {
    font-size: 1.25rem; font-weight: 700; color: var(--primary-navy);
    margin-bottom: 12px; transition: var(--transition);
    font-family: Arial, 'Helvetica Neue', sans-serif;
}
.category-card:hover .category-name { color: var(--primary-blue) }
.category-description {
    color: var(--text-light); font-size: .9rem; line-height: 1.6;
    margin-bottom: 16px; display: -webkit-box;
    -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.category-arrow {
    display: flex; align-items: center; justify-content: flex-end;
    color: var(--primary-blue); font-size: 1.2rem; transition: var(--transition);
}
.category-card:hover .category-arrow { transform: translateX(5px) }
[dir="rtl"] .category-card:hover .category-arrow { transform: translateX(-5px) }
.category-card-skeleton { flex: 0 0 300px; background: #fff; border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow-soft) }
.skeleton-category-image { width: 100%; height: 200px }
.skeleton-category-content { padding: 24px }
.skeleton-line { height: 16px; margin-bottom: 12px }
.skeleton-line.short { width: 60% }
.skeleton-line.medium { width: 80% }
.categories-nav { margin-top: 40px }
.view-all-categories-btn-container { text-align: center; margin-top: 40px }
.btn-view-all-categories {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 10px; padding: 16px 40px; background: var(--gradient-primary);
    color: var(--white); border: none; border-radius: 50px;
    font-size: 1.1rem; font-weight: 700; transition: var(--transition);
    box-shadow: var(--shadow-soft); font-family: inherit;
}
.btn-view-all-categories:hover { transform: translateY(-3px); box-shadow: var(--shadow-strong) }

/* ====================================
   12. FEATURED PRODUCTS
   ==================================== */
.featured-section { padding: 80px 0; background: var(--gradient-light) }
.carousel-container { position: relative; overflow: hidden; border-radius: var(--border-radius); padding: 0 10px }
.carousel-track {
    display: flex; gap: 24px;
    transition: transform .5s cubic-bezier(.4,0,.2,1);
    padding: 20px 0; direction: ltr; contain: layout;
}
[dir="rtl"] .carousel-track { direction: ltr }
[dir="rtl"] .product-card { direction: rtl }
.product-card {
    flex: 0 0 300px; background: var(--white);
    border-radius: var(--border-radius); box-shadow: var(--shadow-soft);
    overflow: hidden; transition: var(--transition);
    position: relative; contain: layout style paint;
    border: 1px solid var(--border-color);
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-strong) }
.product-card:focus { outline: 3px solid var(--accent-blue); outline-offset: 2px }
.product-image {
    position: relative; width: 100%; height: 220px;
    overflow: hidden; background: #f5f5f5;
}
.product-image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .4s ease; will-change: transform;
}
.product-card:hover .product-image img { transform: scale(1.05) }
.discount-badge {
    position: absolute; top: 12px; inset-inline-start: 12px;
    background: var(--success-green); color: #fff;
    padding: 4px 10px; border-radius: 20px;
    font-size: .78rem; font-weight: 700; z-index: 2;
}
.wishlist-btn {
    position: absolute; top: 12px; inset-inline-end: 12px;
    width: 40px; height: 40px; border-radius: 50%; border: none;
    background: var(--white); color: var(--text-light); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition); box-shadow: 0 2px 8px rgba(0,0,0,.12); z-index: 2;
}
.wishlist-btn:hover { background: var(--light-blue); color: var(--primary-blue); transform: scale(1.1) }
.wishlist-btn.active { background: var(--primary-blue); color: var(--white) }
.wishlist-btn:focus-visible { outline: 3px solid var(--accent-blue); outline-offset: 2px }
.product-info { padding: 20px 24px 24px }
.product-name {
    font-size: 1.05rem; font-weight: 700; color: var(--text-dark);
    margin-bottom: 6px; line-height: 1.4;
    display: -webkit-box; -webkit-line-clamp: 2;
    -webkit-box-orient: vertical; overflow: hidden; transition: var(--transition);
}
.product-card:hover .product-name { color: var(--primary-blue) }
.product-category { font-size: .85rem; color: var(--text-secondary); margin-bottom: 10px }
.product-rating { display: flex; align-items: center; gap: 8px; margin-bottom: 14px }
.stars { display: flex; gap: 2px }
.star { color: #f59e0b; font-size: .88rem }
.star.empty { color: #d1d5db }
.rating-text { font-size: .88rem; color: var(--text-light) }
.product-price { display: flex; align-items: center; gap: 10px; margin-bottom: 14px }
.current-price { font-size: 1.35rem; font-weight: 800; color: var(--primary-blue) }
.original-price { font-size: .95rem; color: var(--text-light); text-decoration: line-through }
.currency { font-size: .9rem; color: var(--text-secondary) }
.stock-status { display: flex; align-items: center; gap: 6px; margin-bottom: 16px; font-size: .88rem }
.stock-indicator { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0 }
.in-stock { background: var(--success-green) }
.out-of-stock { background: var(--error-red) }
.add-to-cart-btn {
    width: 100%; padding: 13px 20px;
    background: var(--gradient-primary); color: var(--white);
    border: none; border-radius: var(--border-radius-small);
    font-size: .95rem; font-weight: 700;
    cursor: pointer; transition: var(--transition);
    position: relative; overflow: hidden; font-family: inherit;
}
.add-to-cart-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft) }
.add-to-cart-btn:disabled { opacity: .55; cursor: not-allowed; transform: none }
.add-to-cart-btn:focus-visible { outline: 3px solid var(--accent-blue); outline-offset: 2px }
.btn-text { transition: var(--transition) }
.btn-spinner { position: absolute; inset: 0; opacity: 0; transition: var(--transition); display: flex; align-items: center; justify-content: center }
.add-to-cart-btn.loading .btn-text { opacity: 0 }
.add-to-cart-btn.loading .btn-spinner { opacity: 1 }

/* Carousel Nav */
.carousel-nav { display: flex; justify-content: center; align-items: center; gap: 20px; margin-top: 40px }
.nav-btn {
    width: 50px; height: 50px; border-radius: 50%; border: none;
    background: var(--white); color: var(--primary-blue); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition); box-shadow: var(--shadow-soft); flex-shrink: 0;
}
.nav-btn:hover { background: var(--primary-blue); color: var(--white); transform: scale(1.08) }
.nav-btn:disabled { opacity: .45; cursor: not-allowed; transform: none }
.nav-btn:focus-visible { outline: 3px solid var(--accent-blue); outline-offset: 2px }
.carousel-dots {
    display: flex; gap: 7px; align-items: center;
    overflow: hidden; max-width: 90px; min-width: 0;
    position: relative; flex-shrink: 0;
}
.dot {
    width: 10px; height: 10px; border-radius: 50%; border: none;
    background: #c8cfe8; cursor: pointer;
    transition: all .35s cubic-bezier(.4,0,.2,1);
    flex-shrink: 0; padding: 0; outline: none;
}
.dot.active {
    background: var(--primary-blue); transform: scale(1.4);
    width: 12px; height: 12px;
    box-shadow: 0 0 0 3px rgba(63,81,181,.2);
}
.dot.dot-edge { width: 6px; height: 6px; opacity: .4; transform: scale(.8) }
.dot:focus-visible { outline: 3px solid var(--accent-blue) }

/* Skeleton */
.skeleton-card { flex: 0 0 300px; background: var(--white); border-radius: var(--border-radius); overflow: hidden; padding: 0 }
.skeleton-image { height: 220px }
.skeleton-content { padding: 24px }
.skeleton-button { height: 48px; border-radius: var(--border-radius-small); margin-top: 16px }
.empty-state, .error-state { text-align: center; padding: 60px 20px; width: 100% }
.empty-state i, .error-state i { font-size: 4rem; margin-bottom: 20px }
.empty-state i { color: var(--text-light) }
.error-state i { color: var(--error-red) }
.error-state { color: var(--error-red) }
.retry-btn {
    padding: 12px 24px; background: var(--gradient-primary);
    color: #fff; border: none; border-radius: var(--border-radius-small);
    cursor: pointer; font-weight: 600; font-family: inherit;
}
.view-all-products-btn-container { text-align: center; margin-top: 40px }
.btn-view-all-products {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 10px; padding: 16px 40px; background: var(--gradient-primary);
    color: var(--white); border: none; border-radius: 50px;
    font-size: 1.1rem; font-weight: 700; transition: var(--transition);
    box-shadow: var(--shadow-soft); font-family: inherit;
}
.btn-view-all-products:hover { transform: translateY(-3px); box-shadow: var(--shadow-strong) }

/* ====================================
   13. FEATURES SECTION
   ==================================== */
.features { padding: 80px 0; background: #fff }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(320px,1fr)); gap: 2rem }
.feature-card {
    background: #fff; border-radius: var(--border-radius);
    padding: 2.5rem; box-shadow: var(--shadow-soft);
    transition: var(--transition); position: relative; overflow: hidden; contain: content;
    border: 1px solid var(--border-color);
}
.feature-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%;
    height: 4px; background: var(--gradient-primary);
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-strong) }
.feature-icon {
    width: 70px; height: 70px; border-radius: 50%;
    background: var(--gradient-light); display: flex;
    align-items: center; justify-content: center; margin-bottom: 1.5rem;
}
.feature-icon i { font-size: 2rem; color: var(--primary-navy) }
.feature-card h3 {
    font-size: 1.35rem; font-weight: 700; color: var(--primary-navy);
    margin-bottom: 1rem; font-family: Arial, 'Helvetica Neue', sans-serif;
}
.feature-card p { color: var(--text-secondary); line-height: 1.7 }

/* ====================================
   14. TESTIMONIALS
   ==================================== */
.testimonials { padding: 6rem 0; background: var(--light-gray) }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 2rem }
.testimonial-card {
    background: var(--white); padding: 2rem;
    border-radius: var(--border-radius-lg); box-shadow: var(--shadow);
    transition: var(--transition); position: relative; overflow: hidden; contain: content;
    border: 1px solid var(--border-color);
}
.testimonial-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl) }
.testimonial-rating { margin-bottom: 1rem }
.testimonial-card blockquote { margin-bottom: 1.5rem; position: relative }
.testimonial-card blockquote p { font-style: italic; line-height: 1.75; color: var(--text-primary) }
.testimonial-card blockquote::before {
    content: '"'; font-size: 4rem; color: var(--light-blue);
    position: absolute; top: -1rem; inset-inline-start: -0.5rem;
    font-family: Georgia, serif; line-height: 1;
}
.testimonial-author {
    display: flex; align-items: center; gap: .75rem;
    background: transparent !important;
    padding: 0; margin: 0;
}
.testimonial-author img {
    width: 50px; height: 50px; border-radius: 50%;
    object-fit: cover; border: 2px solid var(--border-color);
    transition: var(--transition-fast); flex-shrink: 0;
}
.testimonial-card:hover .testimonial-author img { border-color: var(--primary-blue) }
.author-info { background: transparent !important }
.author-info cite { font-weight: 700; color: var(--text-primary); font-style: normal; display: block }
.author-role { color: var(--text-secondary); font-size: .875rem }

/* ====================================
   15. CONTACT SECTION
   ==================================== */
.contact { padding: 6rem 0; background: var(--white) }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start }
.contact-info { display: flex; flex-direction: column; gap: 2rem }
.contact-item { display: flex; gap: 1rem }
.contact-icon {
    width: 50px; height: 50px; background: var(--light-blue);
    border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-icon i { color: var(--primary-blue); font-size: 1.25rem }
.contact-details h3 { font-weight: 700; margin-bottom: .5rem; color: var(--text-primary) }
.contact-link { color: var(--text-secondary); transition: var(--transition-fast); display: block; margin-bottom: .25rem; font-size: .95rem }
.contact-link:hover { color: var(--primary-blue) }
.contact-link.whatsapp { color: #2e7d32 }
.contact-link.whatsapp:hover { text-decoration: underline }
.hours { display: flex; flex-direction: column; gap: .25rem }
.hour-item { color: var(--text-secondary); font-size: .9rem }
.map-container { border-radius: var(--border-radius-lg); overflow: hidden; box-shadow: var(--shadow) }
.map-container iframe { width: 100%; height: 400px; border: none; display: block }

/* ====================================
   16. FOOTER
   ==================================== */
footer {
    background: linear-gradient(135deg,var(--primary-blue) 0%,var(--dark-blue) 100%);
    color: var(--white); padding: 60px 20px 20px; position: relative; overflow: hidden;
}
.footer-container { margin: 0 auto; max-width: 1200px; position: relative; z-index: 2 }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 60px; margin-bottom: 40px }
.footer-logo img { height: 50px; margin-bottom: 20px }
.footer-description { margin-bottom: 20px; line-height: 1.7; opacity: .9; font-size: .95rem }
.social-icons { display: flex; gap: 15px }
.social-icon {
    width: 40px; height: 40px; background: rgba(255,255,255,.12);
    color: var(--white); border-radius: 50%; display: flex; align-items: center;
    justify-content: center; transition: var(--transition); backdrop-filter: blur(10px);
}
.social-icon:hover { background: rgba(255,255,255,.25); transform: translateY(-3px) }
.social-icon:focus-visible { outline: 3px solid #fff; outline-offset: 2px }
.footer-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 20px; color: var(--white) }
.footer-links { list-style: none }
.footer-links li { margin-bottom: 10px }
.footer-links a {
    color: rgba(255,255,255,.82); transition: var(--transition);
    display: flex; align-items: center; gap: 8px; font-size: .95rem;
}
.footer-links a:hover { color: var(--white); padding-inline-start: 10px }
.hours-list { list-style: none }
.hours-list li {
    display: flex; justify-content: space-between;
    margin-bottom: 8px; padding-bottom: 8px;
    border-bottom: 1px solid rgba(255,255,255,.1); font-size: .9rem;
}
.hours-day { opacity: .9 }
.hours-time { font-weight: 700 }
.contact-item-footer { display: flex; align-items: center; gap: 15px; margin-bottom: 15px }
.contact-icon-footer {
    width: 38px; height: 38px; background: rgba(255,255,255,.12);
    border-radius: 50%; display: flex; align-items: center;
    justify-content: center; color: var(--white); flex-shrink: 0;
}
.contact-text { opacity: .9; line-height: 1.4; font-size: .92rem }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12) }
.copyright { font-size: .88rem; opacity: .85 }

/* ====================================
   17. TOAST NOTIFICATIONS
   ==================================== */
.toast {
    position: fixed; bottom: 20px; inset-inline-end: 20px;
    background: var(--success-green); color: #fff;
    padding: 15px 20px; border-radius: var(--border-radius);
    box-shadow: var(--shadow-strong);
    transform: translateX(120%); transition: transform .3s ease;
    z-index: 3000; display: flex; align-items: center;
    gap: 10px; max-width: 320px;
}
[dir="rtl"] .toast { transform: translateX(-120%) }
.toast.show { transform: translateX(0) }
[dir="rtl"] .toast.show { transform: translateX(0) }
.toast.error { background: var(--error-red) }

/* ====================================
   18. BACK TO TOP
   ==================================== */
.back-to-top-btn {
    position: fixed; bottom: 30px; inset-inline-end: 30px;
    width: 50px; height: 50px; background: var(--gradient-primary);
    color: #fff; border: none; border-radius: 50%; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; box-shadow: var(--shadow-strong);
    transition: var(--transition); z-index: 1500;
    opacity: 0; visibility: hidden; transform: translateY(100px);
}
.back-to-top-btn.show { opacity: 1; visibility: visible; transform: translateY(0) }
.back-to-top-btn:hover { transform: translateY(-5px); box-shadow: var(--shadow-hero) }
.back-to-top-btn:focus-visible { outline: 3px solid var(--accent-blue); outline-offset: 3px }
.back-to-top-btn i { animation: bounceUpDown 2s ease-in-out infinite }
@keyframes bounceUpDown {
    0%,100% { transform: translateY(0) }
    50% { transform: translateY(-5px) }
}
.back-to-top-btn:hover i { animation: none }
@media (prefers-reduced-motion: reduce) { .back-to-top-btn i { animation: none } }

/* ====================================
   19. ANIMATIONS
   ==================================== */
.fade-in-up { opacity: 0; transform: translateY(30px); transition: opacity .6s ease,transform .6s ease }
.fade-in-left { opacity: 0; transform: translateX(-30px); transition: opacity .6s ease,transform .6s ease }
.fade-in-right { opacity: 0; transform: translateX(30px); transition: opacity .6s ease,transform .6s ease }
.scale-in { opacity: 0; transform: scale(.9); transition: opacity .6s ease,transform .6s ease }
.fade-in-up.visible,
.fade-in-left.visible,
.fade-in-right.visible,
.scale-in.visible { opacity: 1; transform: translateY(0) translateX(0) scale(1) }
.stagger-animation > * { opacity: 0; transform: translateY(20px); transition: opacity .5s ease,transform .5s ease }
.stagger-animation.visible > *:nth-child(1) { transition-delay: .1s }
.stagger-animation.visible > *:nth-child(2) { transition-delay: .2s }
.stagger-animation.visible > *:nth-child(3) { transition-delay: .3s }
.stagger-animation.visible > *:nth-child(4) { transition-delay: .4s }
.stagger-animation.visible > *:nth-child(5) { transition-delay: .5s }
.stagger-animation.visible > *:nth-child(6) { transition-delay: .6s }
.stagger-animation.visible > * { opacity: 1; transform: translateY(0) }
@media (prefers-reduced-motion: reduce) {
    .fade-in-up, .fade-in-left, .fade-in-right, .scale-in,
    .stagger-animation > * { opacity: 1; transform: none; transition: none }
}

/* ====================================
   20. RESPONSIVE
   ==================================== */
@media (max-width: 1200px) {
    .header-content { gap: .75rem; padding: 0 10px }
    .nav-menu { gap: 1rem }
    .nav-link { font-size: .85rem; padding: 6px 10px }
    .nav-actions { gap: 6px }
    .action-btn { width: 38px; height: 38px }
    .lang-toggle { padding: 6px 12px; font-size: .8rem }
    .auth-btn { padding: 6px 12px; font-size: .8rem }
}
@media (max-width: 1024px) {
    .contact-grid { grid-template-columns: 1fr; gap: 3rem }
}
@media (max-width: 768px) {
    body { padding-top: 70px }
    .container { padding: 0 10px }
    .header { padding: 8px 0 }
    .header-content { height: auto; min-height: 56px; gap: .5rem; flex-wrap: nowrap }
    .logo { font-size: 1.3rem }
    .logo img { width: 80px; height: 80px }
    .logo-text { display: none }
    .nav-menu { display: none }
    .mobile-menu-toggle { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; font-size: 1.2rem }
    .nav-actions { flex: 1; justify-content: flex-end; gap: 4px }
    .auth-buttons { display: none }
    .action-btn { width: 36px; height: 36px; font-size: 1rem }
    .lang-toggle { display: flex; width: 55px; height: 36px; padding: 0; justify-content: center }
    .cart-dropdown, .wishlist-dropdown {
        position: fixed; top: 70px; left: 10px; right: 10px; width: auto;
        max-width: calc(100% - 20px); min-width: 0;
        max-height: calc(100vh - 80px);
    }
    .search-container { width: calc(100% - 20px); max-width: 500px; padding: 1rem }
    .search-input { padding: 12px 40px 12px 15px; font-size: .9rem }
    h1 { font-size: 36px }
    .description { font-size: 16px }
    .hero-content { padding: 0 24px }
    .cta-buttons { flex-direction: column }
    .section-title { font-size: 2rem }
    .categories-section { padding: 60px 0 }
    .category-card { flex: 0 0 280px }
    .categories-carousel-track { gap: 16px }
    .category-image { height: 180px }
    .product-card { flex: 0 0 300px }
    .carousel-track { gap: 16px }
    .nav-btn { width: 44px; height: 44px }
    .features-grid { grid-template-columns: 1fr }
    .testimonials-grid { grid-template-columns: 1fr }
    .contact { padding: 4rem 0 }
    .toast { inset-inline-end: 16px; bottom: 16px; left: 16px; right: 16px; max-width: none; transform: translateY(100%) }
    .toast.show { transform: translateY(0) }
    .back-to-top-btn { width: 45px; height: 45px; bottom: 20px }
    .footer-grid { gap: 40px }
    .carousel-dots { gap: 6px; max-width: 76px }
    .dot { width: 9px; height: 9px }
    .dot.active { width: 11px; height: 11px }
}
@media (max-width: 480px) {
    .header { padding: 6px 0 }
    .header-content { gap: .25rem; padding: 0 5px }
    .logo { font-size: 1.1rem }
    .mobile-menu-toggle { width: 34px; height: 34px; font-size: 1.1rem; order: -1 }
    .action-btn { width: 32px; height: 32px; font-size: .9rem }
    .lang-toggle { width: 55px; height: 32px }
    .category-card { flex: 0 0 260px }
    .section-title { font-size: 1.75rem }
    .categories-section { padding: 40px 0 }
    h1 { font-size: 28px }
    .btn { padding: 14px 28px; font-size: 16px }
}
@media (max-width: 360px) {
    .logo img { width: 60px; height: 60px }
    .mobile-menu-toggle { width: 30px; height: 30px; font-size: 1rem }
    .action-btn { width: 28px; height: 28px; font-size: .85rem }
    .lang-toggle { width: 50px; height: 30px }
}

/* ====================================
   21. PRINT
   ==================================== */
@media print {
    .header, .nav-actions, .mobile-menu-toggle,
    .back-to-top-btn, .toast, .overlay { display: none !important }
    body { padding-top: 0 }
    a[href]::after { content: " (" attr(href) ")" }
}