/* ==========================================================================
   ARTECA B2B E-commerce - Proposal 1: Modern Industrial
   Design: Clean, professional, industrial-inspired
   ========================================================================== */

/* CSS Variables */
:root {
    --primary-blue: #26a5ef;
    --primary-dark: #1a8fd4;
    --dark-gray: #2c3e50;
    --medium-gray: #5a6a7a;
    --light-gray: #f5f7fa;
    --border-gray: #e1e5eb;
    --white: #ffffff;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

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

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

ul {
    list-style: none;
}

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

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

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--dark-gray);
    border: 2px solid var(--border-gray);
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

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

/* Top Bar */
.top-bar {
    background: var(--dark-gray);
    color: var(--white);
    padding: 8px 0;
    font-size: 13px;
}

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

.top-bar-left {
    display: flex;
    gap: 24px;
}

.top-bar-left span {
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0.9;
}

.top-bar-right {
    display: flex;
    gap: 16px;
}

.top-bar-right a:hover {
    color: var(--primary-blue);
}

/* Main Header */
.main-header {
    background: var(--white);
    padding: 16px 0;
    border-bottom: 1px solid var(--border-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo img {
    height: 50px;
    width: auto;
}

/* Search Bar */
.search-bar {
    flex: 1;
    max-width: 600px;
}

.search-bar form {
    display: flex;
    border: 2px solid var(--border-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.search-bar form:focus-within {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(38, 165, 239, 0.1);
}

.search-bar input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    font-size: 14px;
    outline: none;
}

.search-bar button {
    padding: 12px 20px;
    background: var(--primary-blue);
    border: none;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.search-bar button:hover {
    background: var(--primary-dark);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--medium-gray);
    cursor: pointer;
    transition: var(--transition);
}

.header-action:hover {
    color: var(--primary-blue);
}

.header-action svg {
    width: 24px;
    height: 24px;
}

.cart-icon {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--primary-blue);
    color: var(--white);
    font-size: 11px;
    font-weight: 600;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main Navigation */
.main-nav {
    background: var(--light-gray);
    border-bottom: 1px solid var(--border-gray);
}

.nav-content {
    display: flex;
    align-items: center;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 16px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-gray);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-blue);
    background: var(--white);
}

.nav-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

.nav-item:hover .nav-link svg {
    transform: rotate(180deg);
}

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 800px;
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.nav-item:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-menu-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 24px;
}

.mega-menu-column h4 {
    color: var(--primary-blue);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-blue);
}

.mega-menu-column ul li {
    margin-bottom: 8px;
}

.mega-menu-column ul li a {
    font-size: 14px;
    color: var(--medium-gray);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mega-menu-column ul li a:hover {
    color: var(--primary-blue);
    padding-left: 4px;
}

.mega-menu-featured {
    background: var(--light-gray);
    padding: 16px;
    border-radius: var(--radius-md);
}

.mega-menu-featured img {
    width: 100%;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.mega-menu-featured h5 {
    font-size: 14px;
    margin-bottom: 8px;
}

.mega-menu-featured p {
    font-size: 13px;
    color: var(--medium-gray);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #1a252f 100%);
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    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="%2326a5ef" stroke-width="0.5" opacity="0.3"/></svg>') repeat;
    opacity: 0.1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-text h1 span {
    color: var(--primary-blue);
}

.hero-text p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.hero-badge {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
}

.hero-badge .number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.hero-badge .text {
    font-size: 13px;
    opacity: 0.9;
}

/* ==========================================================================
   CATEGORIES SECTION
   ========================================================================== */

.categories-section {
    padding: 80px 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-card {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.category-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    background: var(--primary-blue);
}

.category-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary-blue);
    transition: var(--transition);
}

.category-card:hover .category-icon svg {
    color: var(--white);
}

.category-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 13px;
    color: var(--medium-gray);
}

/* ==========================================================================
   FEATURED PRODUCTS
   ========================================================================== */

.featured-products {
    padding: 80px 0;
    background: var(--light-gray);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-gray);
}

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

.product-image {
    position: relative;
    padding: 24px;
    background: var(--light-gray);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    max-height: 180px;
    object-fit: contain;
    transition: var(--transition);
}

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

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

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

.product-badge.sale {
    background: var(--danger);
}

.product-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.product-action-btn {
    width: 36px;
    height: 36px;
    background: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-action-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 12px;
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
}

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

.product-sku {
    font-size: 13px;
    color: var(--medium-gray);
    margin-bottom: 12px;
}

.product-price {
    display: none;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.logged-in .product-price {
    display: flex;
}

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

.price-old {
    font-size: 14px;
    color: var(--medium-gray);
    text-decoration: line-through;
}

.product-footer {
    display: flex;
    gap: 8px;
}

.product-footer .btn {
    flex: 1;
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */

.features-section {
    padding: 60px 0;
    background: var(--white);
    border-top: 1px solid var(--border-gray);
    border-bottom: 1px solid var(--border-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--light-gray);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary-blue);
}

.feature-content h4 {
    font-size: 15px;
    margin-bottom: 4px;
}

.feature-content p {
    font-size: 13px;
    color: var(--medium-gray);
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}

.cta-section h2 {
    margin-bottom: 16px;
}

.cta-section p {
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

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

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

.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
    opacity: 0.8;
    margin: 16px 0 24px;
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

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

.footer-social a:hover {
    background: var(--primary-blue);
}

.footer-column h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    color: var(--primary-blue);
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    font-size: 14px;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    opacity: 1;
    color: var(--primary-blue);
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    opacity: 0.7;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a:hover {
    color: var(--primary-blue);
}

/* ==========================================================================
   CATEGORY LISTING PAGE
   ========================================================================== */

.page-header {
    background: var(--light-gray);
    padding: 32px 0;
    border-bottom: 1px solid var(--border-gray);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--medium-gray);
    margin-bottom: 16px;
}

.breadcrumb a:hover {
    color: var(--primary-blue);
}

.breadcrumb span {
    color: var(--dark-gray);
    font-weight: 500;
}

.page-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-title h1 {
    font-size: 2rem;
}

.results-count {
    color: var(--medium-gray);
    font-size: 14px;
}

/* Listing Layout */
.listing-section {
    padding: 40px 0;
}

.listing-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
}

/* Filters Sidebar */
.filters-sidebar {
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-md);
    padding: 24px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.filter-group {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-gray);
}

.filter-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.filter-group h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.filter-group h4 svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

.filter-options label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-options label:hover {
    color: var(--primary-blue);
}

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

.filter-count {
    margin-left: auto;
    color: var(--medium-gray);
    font-size: 13px;
}

.price-range {
    display: flex;
    gap: 12px;
    align-items: center;
}

.price-range input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
    font-size: 14px;
}

/* Listing Toolbar */
.listing-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-md);
}

.view-options {
    display: flex;
    gap: 8px;
}

.view-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-gray);
    background: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.view-btn.active,
.view-btn:hover {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sort-options label {
    font-size: 14px;
    color: var(--medium-gray);
}

.sort-options select {
    padding: 10px 16px;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}

.pagination a,
.pagination span {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.pagination a:hover,
.pagination .active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

/* ==========================================================================
   PRODUCT DETAIL PAGE
   ========================================================================== */

.product-detail {
    padding: 40px 0;
}

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

/* Product Gallery */
.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: 40px;
    margin-bottom: 16px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-image img {
    max-height: 400px;
    object-fit: contain;
}

.thumbnail-images {
    display: flex;
    gap: 12px;
}

.thumbnail {
    width: 80px;
    height: 80px;
    background: var(--light-gray);
    border: 2px solid var(--border-gray);
    border-radius: var(--radius-sm);
    padding: 8px;
    cursor: pointer;
    transition: var(--transition);
}

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

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Product Info */
.product-detail-info {
    padding: 20px 0;
}

.product-detail-info .product-category {
    font-size: 13px;
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.product-detail-info h1 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.product-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-gray);
}

.product-meta span {
    font-size: 14px;
    color: var(--medium-gray);
}

.product-meta strong {
    color: var(--dark-gray);
}

.stock-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

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

.product-detail-price {
    margin-bottom: 24px;
    display: none;
}

.logged-in .product-detail-price {
    display: block;
}

.product-detail-price .price-current {
    font-size: 2rem;
    font-weight: 700;
}

.product-detail-price .price-note {
    font-size: 13px;
    color: var(--medium-gray);
    margin-top: 4px;
}

.product-description {
    margin-bottom: 32px;
}

.product-description p {
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Quantity Selector */
.quantity-selector {
    margin-bottom: 24px;
}

.quantity-selector label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.quantity-input {
    display: flex;
    align-items: center;
    width: fit-content;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
}

.quantity-btn {
    width: 44px;
    height: 44px;
    background: var(--light-gray);
    border: none;
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition);
}

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

.quantity-input input {
    width: 60px;
    height: 44px;
    border: none;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
}

/* Product Actions */
.product-detail-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.product-detail-actions .btn {
    flex: 1;
}

/* Product Features */
.product-features {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: 24px;
}

.product-features h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.product-features ul li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--medium-gray);
}

.product-features ul li svg {
    width: 20px;
    height: 20px;
    color: var(--success);
}

/* Product Tabs */
.product-tabs {
    margin-top: 60px;
}

.tabs-nav {
    display: flex;
    border-bottom: 2px solid var(--border-gray);
}

.tab-btn {
    padding: 16px 32px;
    font-size: 14px;
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--medium-gray);
    position: relative;
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--primary-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-blue);
}

.tab-content {
    padding: 32px 0;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--border-gray);
}

.specs-table th,
.specs-table td {
    padding: 16px;
    text-align: left;
    font-size: 14px;
}

.specs-table th {
    background: var(--light-gray);
    font-weight: 600;
    width: 200px;
}

/* ==========================================================================
   CART PAGE
   ========================================================================== */

.cart-section {
    padding: 40px 0;
}

.cart-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
}

.cart-items {
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.cart-header {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr 40px;
    gap: 16px;
    padding: 16px 24px;
    background: var(--light-gray);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--medium-gray);
}

.cart-item {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr 40px;
    gap: 16px;
    padding: 24px;
    align-items: center;
    border-bottom: 1px solid var(--border-gray);
}

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

.cart-product {
    display: flex;
    gap: 16px;
    align-items: center;
}

.cart-product-image {
    width: 80px;
    height: 80px;
    background: var(--light-gray);
    border-radius: var(--radius-sm);
    padding: 8px;
    flex-shrink: 0;
}

.cart-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.cart-product-info h4 {
    font-size: 15px;
    margin-bottom: 4px;
}

.cart-product-info h4 a:hover {
    color: var(--primary-blue);
}

.cart-product-info p {
    font-size: 13px;
    color: var(--medium-gray);
}

.cart-price {
    font-weight: 600;
    display: none;
}

.logged-in .cart-price {
    display: block;
}

.cart-quantity .quantity-input {
    transform: scale(0.85);
    transform-origin: left;
}

.cart-total {
    font-weight: 700;
    color: var(--primary-blue);
    display: none;
}

.logged-in .cart-total {
    display: block;
}

.cart-remove {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--light-gray);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.cart-remove:hover {
    background: var(--danger);
    color: var(--white);
}

/* Cart Summary */
.cart-summary {
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-md);
    padding: 32px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.cart-summary h3 {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-gray);
}

.summary-row {
    display: none;
    justify-content: space-between;
    padding: 12px 0;
    font-size: 14px;
}

.logged-in .summary-row {
    display: flex;
}

/* Login required message for prices */
.login-for-price {
    background: var(--light-gray);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--medium-gray);
    text-align: center;
    margin-bottom: 16px;
}

.login-for-price a {
    color: var(--primary-blue);
    font-weight: 600;
}

.login-for-price a:hover {
    text-decoration: underline;
}

.logged-in .login-for-price {
    display: none;
}

.summary-row.total {
    border-top: 2px solid var(--border-gray);
    margin-top: 16px;
    padding-top: 16px;
    font-size: 18px;
    font-weight: 700;
}

.summary-row.total span:last-child {
    color: var(--primary-blue);
}

.cart-summary .btn {
    width: 100%;
    margin-top: 24px;
}

.promo-code {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-gray);
}

.promo-code label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.promo-input {
    display: flex;
    gap: 8px;
}

.promo-input input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
    font-size: 14px;
}

/* ==========================================================================
   LOGIN PAGE
   ========================================================================== */

.login-section {
    padding: 60px 0;
    min-height: calc(100vh - 300px);
    display: flex;
    align-items: center;
}

.login-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.login-form-section {
    padding: 48px;
}

.login-form-section h2 {
    margin-bottom: 8px;
}

.login-form-section > p {
    color: var(--medium-gray);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(38, 165, 239, 0.1);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.form-options label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    cursor: pointer;
}

.form-options a {
    font-size: 14px;
    color: var(--primary-blue);
}

.form-options a:hover {
    text-decoration: underline;
}

.login-form .btn {
    width: 100%;
}

.login-divider {
    text-align: center;
    margin: 24px 0;
    position: relative;
}

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

.login-divider span {
    background: var(--white);
    padding: 0 16px;
    color: var(--medium-gray);
    font-size: 13px;
    position: relative;
}

/* Register Section */
.register-section {
    background: var(--light-gray);
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.register-section h2 {
    margin-bottom: 16px;
}

.register-section > p {
    color: var(--medium-gray);
    margin-bottom: 32px;
}

.register-benefits {
    margin-bottom: 32px;
}

.register-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 14px;
}

.register-benefits li svg {
    width: 20px;
    height: 20px;
    color: var(--success);
    flex-shrink: 0;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1200px) {
    .mega-menu {
        min-width: 600px;
    }
    
    .mega-menu-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .listing-layout {
        grid-template-columns: 1fr;
    }
    
    .filters-sidebar {
        position: static;
    }
    
    .product-detail-layout {
        grid-template-columns: 1fr;
    }
    
    .cart-layout {
        grid-template-columns: 1fr;
    }
    
    .login-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .search-bar {
        order: 3;
        max-width: 100%;
        flex-basis: 100%;
        margin-top: 16px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
    }
    
    .mega-menu {
        position: fixed;
        left: 0;
        right: 0;
        min-width: 100%;
    }
    
    .categories-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cart-header {
        display: none;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}