/* =====================================================
   UNREO E-commerce Stylesheet
   Version: 2.0
   
   Table of Contents:
   1. CSS Variables
   2. Reset & Base Styles
   3. Typography
   4. Layout Components
   5. Navigation
   6. Product Grid
   7. Forms & Inputs
   8. Buttons
   9. Modals & Overlays
   10. Utilities
   11. Responsive Design
   ===================================================== */

/* 1. CSS Variables - Maintaining Original Theme */
:root {
    /* Colors - Original theme preserved */
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --success-color: #51cf66;
    --warning-color: #ffd93d;
    --danger-color: #ff6b6b;
    --info-color: #339af0;
    
    /* Neutral colors */
    --dark-color: #2d3436;
    --light-color: #f8f9fa;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --font-size-base: 1rem;
    --line-height-base: 1.5;
    
    /* Borders */
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --border-radius-lg: 1rem;
    --border-color: var(--gray-300);
    
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-color: #f8f9fa;
        --light-color: #2d3436;
        --gray-100: #212529;
        --gray-200: #343a40;
        --gray-300: #495057;
        --gray-400: #6c757d;
        --gray-500: #adb5bd;
        --gray-600: #ced4da;
        --gray-700: #dee2e6;
        --gray-800: #e9ecef;
        --gray-900: #f8f9fa;
    }
}

/* 2. Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark-color);
    background-color: var(--light-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    border-radius: 0 0 var(--border-radius) 0;
    z-index: var(--z-tooltip);
}

.skip-link:focus {
    top: 0;
}

/* 3. Typography */
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.2;
    color: var(--dark-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover,
a:focus {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* 4. Layout Components */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Top Bar - Original style maintained */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: #000;
    color: #fff;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-sm);
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.logo a {
    color: #fff;
    text-decoration: none;
}

/* User Icon - Original circular style */
.user-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer;
    background: none;
    border: 2px solid transparent;
    padding: 0;
    transition: var(--transition-base);
}

.user-icon:hover,
.user-icon:focus {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.user-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Main Navigation */
.main-nav {
    position: sticky;
    top: 60px;
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

/* Cart Icon - Original style with emoji */
.cart-icon {
    position: relative;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.cart-icon:hover,
.cart-icon:focus {
    background-color: var(--gray-100);
    transform: translateY(-2px);
}

.cart-icon svg {
    width: 24px;
    height: 24px;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-color);
    color: #fff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
}

.cart-count:empty,
.cart-count[data-count="0"] {
    display: none;
}

/* Hamburger Menu - Original style */
.hamburger {
    display: none;
    width: 30px;
    height: 24px;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--dark-color);
    border-radius: 3px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: var(--transition-base);
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 10px; }
.hamburger span:nth-child(3) { top: 20px; }

.hamburger.active span:nth-child(1) {
    top: 10px;
    transform: rotate(135deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    left: -60px;
}

.hamburger.active span:nth-child(3) {
    top: 10px;
    transform: rotate(-135deg);
}

/* Desktop Navigation Links */
.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--dark-color);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition-base);
}

.nav-links a:hover::after,
.nav-links a:focus::after {
    width: 100%;
}

/* Overlay Menu - Original fullscreen style */
.overlay-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.overlay-menu.show {
    opacity: 1;
    visibility: visible;
}

.overlay-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

.overlay-menu a {
    display: block;
    color: #fff;
    font-size: 2rem;
    font-weight: 300;
    padding: var(--spacing-md) 0;
    transition: var(--transition-base);
}

.overlay-menu a:hover,
.overlay-menu a:focus {
    color: var(--primary-color);
    transform: translateX(10px);
}

/* Side Panels - Original slide-out style */
.side-panel {
    position: fixed;
    top: 0;
    height: 100%;
    width: 320px;
    background-color: #fff;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
    z-index: var(--z-modal);
    overflow-y: auto;
}

.user-panel {
    left: 0;
    transform: translateX(-100%);
}

.cart-panel {
    right: 0;
    transform: translateX(100%);
}

.side-panel.open {
    transform: translateX(0);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.close-panel {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-600);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.close-panel:hover,
.close-panel:focus {
    background-color: var(--gray-100);
    color: var(--dark-color);
}

.panel-content {
    padding: var(--spacing-lg);
}

/* Main Content Layout */
.main-content {
    margin-top: 120px; /* Top bar + nav height */
    min-height: calc(100vh - 120px);
    padding: var(--spacing-xl) 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-xl);
}

/* Sidebar Filters */
.sidebar {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    height: fit-content;
    position: sticky;
    top: 140px;
}

.filter-section {
    margin-bottom: var(--spacing-xl);
}

.filter-section h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
}

.search-box input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.search-box button {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    background: none;
    border: none;
    padding: 0 var(--spacing-sm);
    cursor: pointer;
    color: var(--gray-600);
    transition: var(--transition-base);
}

.search-box button:hover,
.search-box button:focus {
    color: var(--primary-color);
}

/* Search Suggestions */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    box-shadow: var(--shadow);
    max-height: 300px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
    display: none;
}

.search-suggestions.show {
    display: block;
}

.suggestion-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.suggestion-item:hover,
.suggestion-item.active {
    background-color: var(--gray-100);
}

.suggestion-type {
    font-size: 0.75rem;
    color: var(--gray-600);
    text-transform: uppercase;
}

/* Price Range Filter */
.price-range-filter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.price-range-filter input {
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
}

/* Category Filters */
.category-filters {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.checkbox-label:hover {
    color: var(--primary-color);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* 5. Product Grid - Original card style maintained */
.product-section {
    background: #fff;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h1 {
    margin: 0;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: #fff;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-base);
}

.sort-select:hover,
.sort-select:focus {
    border-color: var(--primary-color);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* Product Card - Original style */
.product-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-base);
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.product-image-wrapper {
    position: relative;
    padding-top: 100%; /* 1:1 aspect ratio */
    overflow: hidden;
    background-color: var(--gray-100);
}

.product-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--danger-color);
    color: #fff;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.product-info {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    font-size: 0.75rem;
    color: var(--gray-600);
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.stars {
    color: var(--warning-color);
}

.rating-count {
    color: var(--gray-600);
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.original-price {
    font-size: 1rem;
    color: var(--gray-500);
    text-decoration: line-through;
}

.discount-percentage {
    font-size: 0.875rem;
    color: var(--success-color);
    font-weight: 600;
}

.product-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-xxl);
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-300);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--gray-600);
}

.no-results svg {
    color: var(--gray-400);
    margin-bottom: var(--spacing-md);
}

/* 6. Forms & Inputs */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--gray-600);
}

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--danger-color);
}

/* 7. Buttons - Original style maintained */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    transition: var(--transition-base);
    text-decoration: none;
}

.btn:hover,
.btn:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #ff5252;
    border-color: #ff5252;
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: #45b7aa;
    border-color: #45b7aa;
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--dark-color);
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--gray-100);
    border-color: var(--gray-400);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-icon {
    padding: var(--spacing-sm);
    width: 40px;
    height: 40px;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* 8. Modals & Overlays */
.modal-container {
    display: none;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-backdrop.show {
    opacity: 1;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background-color: #fff;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.modal.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    margin: 0;
    font-size: 1.25rem;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 130px);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* Notifications */
.notification-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: var(--z-popover);
    pointer-events: none;
}

.notification {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    border-left: 4px solid var(--success-color);
}

.notification-error {
    border-left: 4px solid var(--danger-color);
}

.notification-warning {
    border-left: 4px solid var(--warning-color);
}

.notification-info {
    border-left: 4px solid var(--info-color);
}

/* 9. Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }
.text-muted { color: var(--gray-600); }

.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-success { background-color: var(--success-color); }
.bg-danger { background-color: var(--danger-color); }
.bg-warning { background-color: var(--warning-color); }
.bg-info { background-color: var(--info-color); }
.bg-light { background-color: var(--light-color); }
.bg-dark { background-color: var(--dark-color); }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

.justify-content-start { justify-content: flex-start !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-between { justify-content: space-between !important; }

.align-items-start { align-items: flex-start !important; }
.align-items-center { align-items: center !important; }
.align-items-end { align-items: flex-end !important; }

.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }

.gap-1 { gap: var(--spacing-xs) !important; }
.gap-2 { gap: var(--spacing-sm) !important; }
.gap-3 { gap: var(--spacing-md) !important; }
.gap-4 { gap: var(--spacing-lg) !important; }
.gap-5 { gap: var(--spacing-xl) !important; }

.m-0 { margin: 0 !important; }
.m-1 { margin: var(--spacing-xs) !important; }
.m-2 { margin: var(--spacing-sm) !important; }
.m-3 { margin: var(--spacing-md) !important; }
.m-4 { margin: var(--spacing-lg) !important; }
.m-5 { margin: var(--spacing-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }
.mt-5 { margin-top: var(--spacing-xl) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }
.mb-5 { margin-bottom: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-xs) !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }
.p-5 { padding: var(--spacing-xl) !important; }

.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination-item {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: #fff;
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
}

.pagination-item:hover,
.pagination-item:focus {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination-item.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.pagination-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Footer */
.site-footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: #fff;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--gray-400);
    transition: var(--transition-base);
}

.footer-section a:hover,
.footer-section a:focus {
    color: #fff;
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--gray-800);
    color: var(--gray-400);
    transition: var(--transition-base);
}

.social-links a:hover,
.social-links a:focus {
    background-color: var(--primary-color);
    color: #fff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

/* 10. Responsive Design */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        margin-bottom: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .hamburger {
        display: block;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-content {
        flex-direction: row-reverse;
    }
    
    /* Product Grid */
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }
    
    /* Side Panels */
    .side-panel {
        width: 100%;
    }
    
    /* Modal */
    .modal {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    /* Footer */
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    /* Utilities */
    .d-sm-none { display: none !important; }
    .d-sm-block { display: block !important; }
}

@media (max-width: 480px) {
    /* Typography */
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    /* Product Grid */
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    /* Buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }
}

/* Print Styles */
@media print {
    .top-bar,
    .main-nav,
    .sidebar,
    .side-panel,
    .hamburger,
    .cart-icon,
    .user-icon,
    .site-footer {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
    }
    
    .content-wrapper {
        display: block;
    }
    
    .product-card {
        break-inside: avoid;
    }
}

/* Accessibility */
:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #ff0000;
        --secondary-color: #00ff00;
        --border-color: #000;
    }
    
    .btn {
        border-width: 2px;
    }
}

/* Loading Animation for Products */
.product-skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-300) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Cart Panel Specific Styles */
.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cart-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--gray-100);
    border-radius: var(--border-radius);
}

.cart-item-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.cart-item-price {
    color: var(--primary-color);
    font-weight: 600;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quantity-btn {
   width: 30px;
   height: 30px;
   display: flex;
   align-items: center;
   justify-content: center;
   background-color: #fff;
   border: 1px solid var(--border-color);
   border-radius: var(--border-radius-sm);
   cursor: pointer;
   transition: var(--transition-base);
}

.quantity-btn:hover,
.quantity-btn:focus {
   background-color: var(--primary-color);
   border-color: var(--primary-color);
   color: #fff;
}

.quantity-value {
   min-width: 40px;
   text-align: center;
   font-weight: 600;
}

.cart-summary {
   border-top: 1px solid var(--border-color);
   padding-top: var(--spacing-lg);
   margin-top: var(--spacing-lg);
}

.cart-summary-row {
   display: flex;
   justify-content: space-between;
   margin-bottom: var(--spacing-sm);
}

.cart-summary-label {
   color: var(--gray-600);
}

.cart-summary-value {
   font-weight: 600;
}

.cart-total {
   font-size: 1.25rem;
   color: var(--primary-color);
}

.cart-actions {
   display: flex;
   flex-direction: column;
   gap: var(--spacing-sm);
   margin-top: var(--spacing-lg);
}

/* User Panel Specific Styles */
.user-info {
   text-align: center;
   padding: var(--spacing-xl) 0;
}

.user-avatar {
   width: 80px;
   height: 80px;
   border-radius: 50%;
   margin: 0 auto var(--spacing-md);
   display: block;
}

.user-name {
   font-size: 1.25rem;
   font-weight: 600;
   margin-bottom: var(--spacing-xs);
}

.user-email {
   color: var(--gray-600);
   font-size: 0.875rem;
}

.user-nav {
   list-style: none;
   padding: 0;
   margin: 0;
}

.user-nav-item {
   border-bottom: 1px solid var(--border-color);
}

.user-nav-link {
   display: flex;
   align-items: center;
   gap: var(--spacing-md);
   padding: var(--spacing-md) 0;
   color: var(--dark-color);
   transition: var(--transition-base);
}

.user-nav-link:hover,
.user-nav-link:focus {
   color: var(--primary-color);
   text-decoration: none;
}

.user-nav-icon {
   width: 20px;
   height: 20px;
   opacity: 0.6;
}

/* Login/Register Forms */
.auth-form {
   max-width: 400px;
   margin: 0 auto;
}

.auth-tabs {
   display: flex;
   border-bottom: 2px solid var(--border-color);
   margin-bottom: var(--spacing-xl);
}

.auth-tab {
   flex: 1;
   padding: var(--spacing-md);
   background: none;
   border: none;
   font-size: 1rem;
   font-weight: 600;
   color: var(--gray-600);
   cursor: pointer;
   position: relative;
   transition: var(--transition-base);
}

.auth-tab.active {
   color: var(--primary-color);
}

.auth-tab.active::after {
   content: '';
   position: absolute;
   bottom: -2px;
   left: 0;
   right: 0;
   height: 2px;
   background-color: var(--primary-color);
}

.auth-divider {
   text-align: center;
   margin: var(--spacing-lg) 0;
   position: relative;
}

.auth-divider::before {
   content: '';
   position: absolute;
   top: 50%;
   left: 0;
   right: 0;
   height: 1px;
   background-color: var(--border-color);
}

.auth-divider span {
   background-color: #fff;
   padding: 0 var(--spacing-md);
   position: relative;
   color: var(--gray-600);
}

.social-login {
   display: flex;
   flex-direction: column;
   gap: var(--spacing-sm);
}

.social-login-btn {
   display: flex;
   align-items: center;
   justify-content: center;
   gap: var(--spacing-sm);
   padding: var(--spacing-sm) var(--spacing-md);
   border: 1px solid var(--border-color);
   border-radius: var(--border-radius);
   background-color: #fff;
   color: var(--dark-color);
   font-weight: 500;
   cursor: pointer;
   transition: var(--transition-base);
}

.social-login-btn:hover,
.social-login-btn:focus {
   background-color: var(--gray-100);
}

/* Product Detail Modal */
.product-detail-modal .modal-body {
   padding: 0;
}

.product-detail-images {
   position: relative;
   background-color: var(--gray-100);
}

.product-detail-main-image {
   width: 100%;
   height: 400px;
   object-fit: contain;
}

.product-detail-thumbnails {
   display: flex;
   gap: var(--spacing-sm);
   padding: var(--spacing-md);
   overflow-x: auto;
}

.product-detail-thumbnail {
   width: 60px;
   height: 60px;
   object-fit: cover;
   border: 2px solid transparent;
   border-radius: var(--border-radius-sm);
   cursor: pointer;
   transition: var(--transition-base);
}

.product-detail-thumbnail.active,
.product-detail-thumbnail:hover {
   border-color: var(--primary-color);
}

.product-detail-info {
   padding: var(--spacing-lg);
}

.product-detail-category {
   font-size: 0.875rem;
   color: var(--gray-600);
   text-transform: uppercase;
   margin-bottom: var(--spacing-sm);
}

.product-detail-name {
   font-size: 1.5rem;
   font-weight: 600;
   margin-bottom: var(--spacing-md);
}

.product-detail-rating {
   display: flex;
   align-items: center;
   gap: var(--spacing-md);
   margin-bottom: var(--spacing-lg);
}

.product-detail-price {
   display: flex;
   align-items: baseline;
   gap: var(--spacing-md);
   margin-bottom: var(--spacing-lg);
}

.product-detail-description {
   color: var(--gray-700);
   margin-bottom: var(--spacing-lg);
}

.product-options {
   margin-bottom: var(--spacing-lg);
}

.product-option-label {
   display: block;
   font-weight: 600;
   margin-bottom: var(--spacing-sm);
}

.product-option-values {
   display: flex;
   gap: var(--spacing-sm);
}

.product-option-value {
   padding: var(--spacing-sm) var(--spacing-md);
   border: 1px solid var(--border-color);
   border-radius: var(--border-radius);
   background-color: #fff;
   cursor: pointer;
   transition: var(--transition-base);
}

.product-option-value:hover,
.product-option-value.selected {
   border-color: var(--primary-color);
   background-color: var(--primary-color);
   color: #fff;
}

.product-quantity-selector {
   display: flex;
   align-items: center;
   gap: var(--spacing-md);
   margin-bottom: var(--spacing-lg);
}

.product-detail-actions {
   display: flex;
   gap: var(--spacing-sm);
}

/* Checkout Process */
.checkout-steps {
   display: flex;
   justify-content: center;
   margin-bottom: var(--spacing-xl);
}

.checkout-step {
   display: flex;
   align-items: center;
   gap: var(--spacing-sm);
   padding: var(--spacing-sm) var(--spacing-md);
   color: var(--gray-600);
   position: relative;
}

.checkout-step::after {
   content: '';
   position: absolute;
   right: -20px;
   top: 50%;
   transform: translateY(-50%);
   border-left: 10px solid var(--gray-300);
   border-top: 10px solid transparent;
   border-bottom: 10px solid transparent;
}

.checkout-step:last-child::after {
   display: none;
}

.checkout-step.active {
   color: var(--primary-color);
   font-weight: 600;
}

.checkout-step.completed {
   color: var(--success-color);
}

.checkout-step-number {
   width: 30px;
   height: 30px;
   display: flex;
   align-items: center;
   justify-content: center;
   border-radius: 50%;
   background-color: var(--gray-300);
   color: #fff;
   font-weight: 600;
}

.checkout-step.active .checkout-step-number {
   background-color: var(--primary-color);
}

.checkout-step.completed .checkout-step-number {
   background-color: var(--success-color);
}

/* Avatar Upload */
.avatar-upload {
   text-align: center;
}

.avatar-preview {
   width: 150px;
   height: 150px;
   border-radius: 50%;
   margin: 0 auto var(--spacing-md);
   position: relative;
   overflow: hidden;
   border: 3px solid var(--border-color);
}

.avatar-preview img {
   width: 100%;
   height: 100%;
   object-fit: cover;
}

.avatar-upload-btn {
   position: absolute;
   bottom: 0;
   left: 0;
   right: 0;
   background-color: rgba(0, 0, 0, 0.7);
   color: #fff;
   padding: var(--spacing-sm);
   cursor: pointer;
   transition: var(--transition-base);
}

.avatar-upload-btn:hover {
   background-color: rgba(0, 0, 0, 0.9);
}

/* Cropper Modal */
.cropper-container {
   max-width: 100%;
   height: 400px;
   margin: 0 auto;
}

/* Favorites */
.favorite-btn {
   background: none;
   border: none;
   cursor: pointer;
   color: var(--gray-400);
   transition: var(--transition-base);
}

.favorite-btn:hover,
.favorite-btn.active {
   color: var(--danger-color);
}

.favorite-btn svg {
   width: 24px;
   height: 24px;
}

.favorite-btn.active svg {
   fill: currentColor;
}

/* Order Status */
.order-status {
   display: inline-flex;
   align-items: center;
   padding: var(--spacing-xs) var(--spacing-sm);
   border-radius: var(--border-radius-sm);
   font-size: 0.875rem;
   font-weight: 600;
}

.order-status.pending {
   background-color: var(--warning-color);
   color: var(--dark-color);
}

.order-status.processing {
   background-color: var(--info-color);
   color: #fff;
}

.order-status.shipped {
   background-color: var(--secondary-color);
   color: #fff;
}

.order-status.delivered {
   background-color: var(--success-color);
   color: #fff;
}

.order-status.cancelled {
   background-color: var(--danger-color);
   color: #fff;
}

/* Reviews */
.review-item {
   padding: var(--spacing-lg) 0;
   border-bottom: 1px solid var(--border-color);
}

.review-header {
   display: flex;
   align-items: center;
   gap: var(--spacing-md);
   margin-bottom: var(--spacing-sm);
}

.review-avatar {
   width: 40px;
   height: 40px;
   border-radius: 50%;
}

.review-meta {
   flex: 1;
}

.review-author {
   font-weight: 600;
   margin-bottom: var(--spacing-xs);
}

.review-date {
   font-size: 0.875rem;
   color: var(--gray-600);
}

.review-rating {
   color: var(--warning-color);
   margin-bottom: var(--spacing-sm);
}

.review-content {
   color: var(--gray-700);
}

/* Free Shipping Progress */
.free-shipping-progress {
   background-color: var(--gray-100);
   padding: var(--spacing-md);
   border-radius: var(--border-radius);
   margin-bottom: var(--spacing-lg);
}

.free-shipping-text {
   font-size: 0.875rem;
   margin-bottom: var(--spacing-sm);
}

.progress-bar {
   height: 8px;
   background-color: var(--gray-300);
   border-radius: 4px;
   overflow: hidden;
}

.progress-fill {
   height: 100%;
   background-color: var(--success-color);
   transition: width 0.3s ease;
}

/* Search Autocomplete */
.search-autocomplete {
   position: absolute;
   top: 100%;
   left: 0;
   right: 0;
   background-color: #fff;
   border: 1px solid var(--border-color);
   border-top: none;
   border-radius: 0 0 var(--border-radius) var(--border-radius);
   box-shadow: var(--shadow);
   max-height: 300px;
   overflow-y: auto;
   z-index: var(--z-dropdown);
}

.search-suggestion {
   padding: var(--spacing-sm) var(--spacing-md);
   cursor: pointer;
   transition: var(--transition-base);
}

.search-suggestion:hover,
.search-suggestion.highlighted {
   background-color: var(--gray-100);
}

.search-suggestion-type {
   font-size: 0.75rem;
   color: var(--gray-600);
   text-transform: uppercase;
}

.search-suggestion-text {
   font-weight: 500;
}

.search-suggestion-price {
   color: var(--primary-color);
   font-size: 0.875rem;
}

/* Toast Notifications */
.toast {
   position: fixed;
   bottom: 20px;
   left: 50%;
   transform: translateX(-50%) translateY(100px);
   background-color: var(--dark-color);
   color: #fff;
   padding: var(--spacing-md) var(--spacing-lg);
   border-radius: var(--border-radius);
   box-shadow: var(--shadow);
   opacity: 0;
   transition: all 0.3s ease;
   z-index: var(--z-tooltip);
}

.toast.show {
   opacity: 1;
   transform: translateX(-50%) translateY(0);
}

/* PayPal Button Container */
#paypal-button-container {
   margin-top: var(--spacing-lg);
}

/* Additional Responsive Adjustments */
@media (max-width: 576px) {
   .container {
       padding: 0 var(--spacing-sm);
   }
   
   .top-bar-content {
       padding: 0 var(--spacing-sm);
   }
   
   .product-card {
       font-size: 0.875rem;
   }
   
   .product-name {
       font-size: 0.875rem;
   }
   
   .price {
       font-size: 1rem;
   }
   
   .section-header {
       flex-direction: column;
       align-items: flex-start;
       gap: var(--spacing-md);
   }
   
   .sort-controls {
       width: 100%;
   }
   
   .sort-select {
       width: 100%;
   }
}

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
   body {
       background-color: var(--gray-900);
       color: var(--gray-100);
   }
   
   .product-card,
   .sidebar,
   .product-section,
   .side-panel {
       background-color: var(--gray-800);
       border-color: var(--gray-700);
   }
   
   .form-control,
   .sort-select {
       background-color: var(--gray-800);
       border-color: var(--gray-700);
       color: var(--gray-100);
   }
   
   .btn-outline {
       border-color: var(--gray-600);
       color: var(--gray-100);
   }
   
   .btn-outline:hover {
       background-color: var(--gray-700);
       border-color: var(--gray-500);
   }
   
   .modal {
       background-color: var(--gray-800);
       color: var(--gray-100);
   }
   
   .modal-header,
   .modal-footer {
       border-color: var(--gray-700);
   }
}