/**
 * AllWorldBooks - Main Stylesheet
 * Modern E-commerce Design
 */

/* ========================================
   CSS Variables & Root Styles
======================================== */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --transition: all 0.3s ease;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
}

/* ========================================
   Reset & Base Styles
======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5em;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: 1rem;
}

.text-muted {
    color: var(--text-muted);
}

.text-primary {
    color: var(--primary-color);
}

.text-success {
    color: var(--success-color);
}

.text-danger {
    color: var(--danger-color);
}

/* ========================================
   Layout & Container
======================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-sm {
    max-width: 640px;
}

.container-md {
    max-width: 768px;
}

.container-lg {
    max-width: 1024px;
}

.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: var(--font-size-3xl);
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-title p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Header & Navigation
======================================== */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 0;
    font-size: var(--font-size-sm);
}

.header-top a {
    color: white;
}

.header-main {
    padding: 1rem 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.logo img {
    height: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-search {
    position: relative;
}

.nav-search input {
    padding: 0.5rem 1rem;
    padding-right: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 200px;
    transition: var(--transition);
}

.nav-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    width: 250px;
}

.nav-search button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
}

.cart-icon {
    position: relative;
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.cart-icon:hover {
    color: var(--primary-color);
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--danger-color);
    color: white;
    font-size: var(--font-size-xs);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #059669;
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    color: white;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
}

/* ========================================
   Hero Section
======================================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="2"/></svg>');
    background-size: 100px 100px;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero .btn-primary {
    background: white;
    color: var(--primary-color);
}

.hero .btn-primary:hover {
    background: var(--bg-tertiary);
}

.hero .btn-outline {
    border-color: white;
    color: white;
}

.hero .btn-outline:hover {
    background: white;
    color: var(--primary-color);
}

/* ========================================
   Categories Section
======================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.category-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: 0.5rem;
}

.category-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

/* ========================================
   Products Section
======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    padding-top: 133%;
    background: var(--bg-tertiary);
    overflow: hidden;
}

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

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

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--danger-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.product-badge.new {
    background: var(--success-color);
}

.product-badge.featured {
    background: var(--accent-color);
}

.product-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-actions {
    opacity: 1;
}

.product-actions button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: none;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.product-actions button:hover {
    background: var(--primary-color);
    color: white;
}

.product-info {
    padding: 1.25rem;
}

.product-category {
    font-size: var(--font-size-xs);
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-title a {
    color: var(--text-primary);
}

.product-title a:hover {
    color: var(--primary-color);
}

.product-author {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.price-original {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-decoration: line-through;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.product-rating i {
    color: var(--accent-color);
    font-size: var(--font-size-sm);
}

.product-rating span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

/* ========================================
   Shop Page
======================================== */
.shop-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    padding: 2rem 0;
}

.shop-sidebar {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.filter-section {
    margin-bottom: 2rem;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-section h4 {
    font-size: var(--font-size-base);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.filter-item label {
    cursor: pointer;
    flex: 1;
}

.filter-item .count {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.price-range {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.price-range input {
    width: 80px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.shop-main {
    min-width: 0;
}

.shop-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.shop-header p {
    margin: 0;
    color: var(--text-secondary);
}

.sort-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
}

.view-toggle {
    display: flex;
    gap: 0.5rem;
}

.view-toggle button {
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--border-radius);
}

.view-toggle button.active {
    background: var(--primary-color);
    color: white;
}

/* ========================================
   Product Detail Page
======================================== */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2rem 0;
}

.product-gallery {
    position: sticky;
    top: 100px;
}

.product-main-image {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: 1rem;
}

.product-main-image img {
    width: 100%;
    height: auto;
}

.product-thumbnails {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
}

.product-thumbnails img {
    width: 80px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--border-radius);
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition);
}

.product-thumbnails img.active,
.product-thumbnails img:hover {
    opacity: 1;
    border: 2px solid var(--primary-color);
}

.product-detail-info h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: 0.5rem;
}

.product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.product-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.product-detail-price {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.product-detail-price .price-current {
    font-size: var(--font-size-3xl);
}

.product-detail-price .price-original {
    font-size: var(--font-size-xl);
}

.product-description {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.product-specs {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.product-specs table {
    width: 100%;
    font-size: var(--font-size-sm);
}

.product-specs td {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.product-specs td:first-child {
    font-weight: 500;
    width: 40%;
}

.product-specs tr:last-child td {
    border-bottom: none;
}

.add-to-cart-form {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.quantity-input {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.quantity-input button {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    font-size: var(--font-size-lg);
}

.quantity-input input {
    width: 60px;
    height: 40px;
    border: none;
    text-align: center;
    font-weight: 500;
}

.stock-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
}

.stock-status.in-stock {
    color: var(--success-color);
}

.stock-status.out-of-stock {
    color: var(--danger-color);
}

/* ========================================
   Cart Page
======================================== */
.cart-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
    padding: 2rem 0;
}

.cart-items {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1.5rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 100px;
    height: 120px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-tertiary);
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-info h3 {
    font-size: var(--font-size-base);
    margin-bottom: 0.25rem;
}

.cart-item-info h3 a {
    color: var(--text-primary);
}

.cart-item-info p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

.cart-item-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
}

.remove-item {
    background: none;
    border: none;
    color: var(--danger-color);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.cart-summary {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.cart-summary h3 {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.summary-row.total {
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
}

.cart-summary .btn {
    margin-top: 1rem;
}

.empty-cart {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-cart i {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-cart h2 {
    margin-bottom: 0.5rem;
}

.empty-cart p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* ========================================
   Checkout Page
======================================== */
.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2rem;
    padding: 2rem 0;
}

.checkout-form {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

.checkout-section {
    margin-bottom: 2rem;
}

.checkout-section:last-child {
    margin-bottom: 0;
}

.checkout-section h3 {
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row.single {
    grid-template-columns: 1fr;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.order-summary {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.order-summary h3 {
    margin-bottom: 1.5rem;
}

.order-items {
    margin-bottom: 1.5rem;
}

.order-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.order-item:last-child {
    border-bottom: none;
}

.order-item-image {
    width: 60px;
    height: 80px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-tertiary);
}

.order-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.order-item-info h4 {
    font-size: var(--font-size-sm);
    margin-bottom: 0.25rem;
}

.order-item-info p {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin: 0;
}

.order-item-price {
    font-weight: 600;
}

/* ========================================
   User Account Pages
======================================== */
.account-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    padding: 2rem 0;
}

.account-sidebar {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    height: fit-content;
}

.account-user {
    text-align: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.account-user i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.account-user h4 {
    margin-bottom: 0.25rem;
}

.account-user p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.account-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.account-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    color: var(--text-primary);
}

.account-menu a:hover,
.account-menu a.active {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.account-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

.account-content h2 {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* ========================================
   Auth Pages (Login/Register)
======================================== */
.auth-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.auth-form {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-lg);
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 0.5rem;
}

.auth-form > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.auth-form .form-group {
    margin-bottom: 1.25rem;
}

.auth-form .btn {
    margin-top: 1rem;
}

.auth-links {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.auth-links p {
    margin: 0;
    font-size: var(--font-size-sm);
}

/* ========================================
   Contact Page
======================================== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2rem 0;
}

.contact-info {
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

.contact-info h2 {
    margin-bottom: 1rem;
}

.contact-info > p {
    opacity: 0.9;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    margin-bottom: 0.25rem;
}

.contact-item p {
    opacity: 0.9;
    margin: 0;
}

.contact-form {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

.contact-form h2 {
    margin-bottom: 1.5rem;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 0 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-about .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

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

.footer h4 {
    margin-bottom: 1.5rem;
    font-size: var(--font-size-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

.footer-contact i {
    margin-top: 0.25rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--border-radius);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
}

/* ========================================
   Alerts & Messages
======================================== */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #cffafe;
    color: #0e7490;
    border: 1px solid #a5f3fc;
}

/* ========================================
   Pagination
======================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 2rem;
}

.pagination .page-item {
    display: inline-block;
}

.pagination .page-link {
    display: block;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    background: var(--bg-primary);
}

.pagination .page-item.active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination .page-item.disabled .page-link {
    color: var(--text-muted);
    cursor: not-allowed;
}

/* ========================================
   Reviews
======================================== */
.reviews-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.reviews-section h3 {
    margin-bottom: 1.5rem;
}

.review-form {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.review-form h4 {
    margin-bottom: 1rem;
}

.rating-input {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.rating-input input {
    display: none;
}

.rating-input label {
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
}

.rating-input label:hover,
.rating-input label:hover ~ label,
.rating-input input:checked ~ label {
    color: var(--accent-color);
}

.review-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.review-item:last-child {
    border-bottom: none;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.review-author {
    font-weight: 600;
}

.review-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.review-rating {
    margin-bottom: 0.5rem;
}

.review-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.review-comment {
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   Related Products
======================================== */
.related-products {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Order Tracking
======================================== */
.order-status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.order-status-badge.pending {
    background: #fef3c7;
    color: #92400e;
}

.order-status-badge.processing {
    background: #dbeafe;
    color: #1e40af;
}

.order-status-badge.shipped {
    background: #cffafe;
    color: #0e7490;
}

.order-status-badge.delivered {
    background: #d1fae5;
    color: #065f46;
}

.order-status-badge.cancelled {
    background: #fee2e2;
    color: #991b1b;
}

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

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 1rem; padding-bottom: 1rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }

.hidden { display: none; }
.visible { display: block; }

/* ========================================
   Responsive Styles
======================================== */
@media (max-width: 1024px) {
    .shop-layout {
        grid-template-columns: 1fr;
    }
    
    .shop-sidebar {
        position: static;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
    
    .product-detail {
        grid-template-columns: 1fr;
    }
    
    .product-gallery {
        position: static;
    }
    
    .cart-layout,
    .checkout-layout {
        grid-template-columns: 1fr;
    }
    
    .cart-summary,
    .order-summary {
        position: static;
    }
    
    .account-layout {
        grid-template-columns: 1fr;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .cart-item {
        grid-template-columns: 80px 1fr;
    }
    
    .cart-item-actions {
        grid-column: span 2;
        flex-direction: row;
        justify-content: space-between;
    }
}