/* ============================================
   emark - Stylesheet Principal
   ============================================ */

/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #f59e0b;
    --secondary-dark: #d97706;
    --accent-color: #10b981;
    --accent-dark: #059669;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --header-height: 70px;
    --container-max: 1200px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 1.5rem;
    font-weight: 800;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: 800;
}

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

/* Search */
.search-container {
    flex: 1;
    max-width: 500px;
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid transparent;
    transition: var(--transition);
}

.search-container:focus-within {
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.95rem;
}

.search-btn {
    padding: 12px 20px;
    background: var(--primary-color);
    color: white;
    transition: var(--transition);
}

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

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    position: relative;
    font-size: 0.75rem;
}

.header-action:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.header-action i {
    font-size: 1.2rem;
}

.badge {
    position: absolute;
    top: 2px;
    right: 4px;
    background: var(--secondary-color);
    color: white;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--radius-full);
    min-width: 18px;
    text-align: center;
}

.action-text {
    display: none;
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    padding: 8px;
    font-size: 1.3rem;
    color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    flex-direction: column;
    gap: 10px;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
    margin-top: var(--header-height);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 60px 20px;
    overflow: hidden;
}

.hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-text .highlight {
    color: var(--secondary-color);
}

.hero-text p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    max-width: 450px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    width: 200px;
    height: 280px;
    perspective: 1000px;
}

.card-inner {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: white;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

.card-inner i {
    font-size: 4rem;
}

.card-inner span {
    font-size: 1.2rem;
    font-weight: 700;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

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

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

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

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

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

.btn-success:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.btn-danger {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

/* ============================================
   Section Titles
   ============================================ */
.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
}

/* ============================================
   Categories Section
   ============================================ */
.categories {
    padding: 60px 0;
    background: var(--bg-primary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: var(--transition);
}

.category-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.category-card span {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Featured Products
   ============================================ */
.featured {
    padding: 60px 0;
}

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

.product-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
}

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

.product-image {
    position: relative;
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.product-image .placeholder-icon {
    font-size: 4rem;
    color: var(--text-muted);
}

.product-badges {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.product-badge {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.badge-sale {
    background: #ef4444;
    color: white;
}

.badge-new {
    background: var(--accent-color);
    color: white;
}

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

.favorite-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    color: var(--text-muted);
    transition: var(--transition);
}

.favorite-btn:hover,
.favorite-btn.active {
    color: #ef4444;
}

.favorite-btn.active i {
    font-weight: 900;
}

.product-info {
    padding: 16px;
}

.product-category {
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 12px;
}

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

.price-old {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.price-installment {
    font-size: 0.8rem;
    color: var(--accent-color);
    font-weight: 500;
}

.product-seller {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.product-seller i {
    color: var(--secondary-color);
}

.product-actions {
    display: flex;
    gap: 8px;
    padding: 0 16px 16px;
}

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

.section-footer {
    text-align: center;
    margin-top: 40px;
}

/* ============================================
   Trade Section
   ============================================ */
.trade-section {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

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

.trade-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.trade-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.trade-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat {
    text-align: center;
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
    padding: 60px 0;
    background: var(--bg-primary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.step {
    text-align: center;
    padding: 30px 20px;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 4rem;
    font-weight: 800;
    color: var(--bg-tertiary);
    line-height: 1;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 20px auto;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    position: relative;
    z-index: 1;
}

.step h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 0;
}

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

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-section ul a:hover {
    color: white;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.payment-methods,
.security-badges {
    display: flex;
    gap: 12px;
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.7);
}

.payment-methods i,
.security-badges i {
    transition: var(--transition);
}

.payment-methods i:hover,
.security-badges i:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-links {
    display: flex;
    gap: 20px;
}

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

/* ============================================
   Products Page
   ============================================ */
.page-header {
    margin-top: var(--header-height);
    padding: 30px 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.products-page {
    padding: 40px 0;
}

.products-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
}

/* Filters Sidebar */
.filters-sidebar {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    height: fit-content;
    position: sticky;
    top: calc(var(--header-height) + 20px);
    border: 1px solid var(--border-color);
}

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

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

.filter-title {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

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

.filter-option label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.price-range {
    display: flex;
    gap: 10px;
    align-items: center;
}

.price-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.price-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Products Content */
.products-content {
    min-height: 500px;
}

.products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.products-count {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.products-sort {
    display: flex;
    align-items: center;
    gap: 10px;
}

.products-sort label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.products-sort select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    background: var(--bg-secondary);
    cursor: pointer;
}

.products-sort select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.products-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

.pagination-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

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

/* ============================================
   Product Detail Page
   ============================================ */
.product-detail {
    padding: 40px 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.product-gallery {
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.main-image {
    width: 100%;
    height: 450px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.main-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.main-image .placeholder-icon {
    font-size: 8rem;
    color: var(--text-muted);
}

.thumbnail-list {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.thumbnail {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    overflow: hidden;
}

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

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

.product-details h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--secondary-color);
}

.product-rating span {
    color: var(--text-secondary);
    margin-left: 4px;
}

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

.product-price-section {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.product-price-display {
    margin-bottom: 16px;
}

.product-price-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.product-price-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.product-price-old {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 12px;
}

.product-discount {
    display: inline-block;
    background: #ef4444;
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: 12px;
}

.product-installments {
    font-size: 0.95rem;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.product-pix {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.product-pix i {
    color: var(--accent-color);
}

.product-description {
    margin-bottom: 24px;
}

.product-description h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

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

.product-specs {
    margin-bottom: 24px;
}

.product-specs h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

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

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

.specs-table td {
    padding: 10px 0;
    font-size: 0.95rem;
}

.specs-table td:first-child {
    color: var(--text-muted);
    width: 40%;
}

.product-actions-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: 12px;
}

.quantity-selector label {
    font-weight: 600;
}

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

.quantity-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.quantity-input {
    width: 60px;
    height: 40px;
    border: none;
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
}

.quantity-input:focus {
    outline: none;
}

.action-buttons {
    display: flex;
    gap: 12px;
}

.action-buttons .btn {
    flex: 1;
    padding: 14px 24px;
}

.seller-info {
    margin-top: 24px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 16px;
}

.seller-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.seller-details h4 {
    font-weight: 700;
    margin-bottom: 4px;
}

.seller-details .seller-rating {
    font-size: 0.9rem;
    color: var(--secondary-color);
}

/* ============================================
   Cart Page
   ============================================ */
.cart-page {
    padding: 40px 0;
}

.cart-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 30px;
    align-items: start;
}

.cart-items {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.cart-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.cart-item {
    display: flex;
    gap: 20px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

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

.cart-item-image {
    width: 100px;
    height: 100px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

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

.cart-item-image .placeholder-icon {
    font-size: 2.5rem;
    color: var(--text-muted);
}

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

.cart-item-name {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1rem;
}

.cart-item-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.cart-item-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.cart-item-remove {
    color: var(--text-muted);
    padding: 8px;
    transition: var(--transition);
}

.cart-item-remove:hover {
    color: #ef4444;
}

.cart-summary {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 24px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.cart-summary h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.summary-row.total {
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.summary-row.total .value {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.cart-summary .btn {
    width: 100%;
    margin-top: 20px;
    padding: 14px;
}

.pix-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pix-info i {
    color: var(--accent-color);
}

/* ============================================
   Trade Page
   ============================================ */
.trade-page {
    padding: 40px 0;
}

.trade-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-xl);
    padding: 50px;
    color: white;
    text-align: center;
    margin-bottom: 40px;
}

.trade-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.trade-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 30px;
}

.trade-search {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.trade-search input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1rem;
}

.trade-search input:focus {
    outline: none;
}

.trade-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.trade-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition);
}

.trade-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.trade-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.trade-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.trade-user-info h4 {
    font-weight: 600;
    font-size: 0.95rem;
}

.trade-user-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.trade-card-body {
    padding: 16px;
}

.trade-wants,
.trade-offers {
    margin-bottom: 12px;
}

.trade-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.trade-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.trade-tag {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.trade-tag.want {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
}

.trade-tag.offer {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-color);
}

.trade-card-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
}

.trade-card-footer .btn {
    flex: 1;
}

/* ============================================
   Account Page
   ============================================ */
.account-page {
    padding: 40px 0;
}

.account-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
}

.account-sidebar {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 24px;
    height: fit-content;
}

.account-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 auto 16px;
}

.account-name {
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.account-email {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.account-menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.account-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.account-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 30px;
}

.account-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

/* ============================================
   Checkout Page
   ============================================ */
.checkout-page {
    padding: 40px 0;
}

.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    align-items: start;
}

.checkout-section {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.checkout-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.checkout-section-body {
    padding: 24px;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.payment-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.payment-option {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.payment-option:hover,
.payment-option.selected {
    border-color: var(--primary-color);
}

.payment-option input[type="radio"] {
    display: none;
}

.payment-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.payment-option.selected .payment-icon {
    background: var(--primary-color);
    color: white;
}

.payment-info h4 {
    font-weight: 600;
    margin-bottom: 4px;
}

.payment-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.pix-code {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
}

.pix-code.show {
    display: block;
}

.pix-qr {
    width: 200px;
    height: 200px;
    background: var(--bg-primary);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.pix-qr i {
    font-size: 5rem;
    color: var(--text-muted);
}

.pix-timer {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.pix-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Favorites Page
   ============================================ */
.favorites-page {
    padding: 40px 0;
}

.favorites-empty {
    text-align: center;
    padding: 80px 20px;
}

.favorites-empty i {
    font-size: 5rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.favorites-empty h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.favorites-empty p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

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

/* ============================================
   Toast Notification
   ============================================ */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + 20px);
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    animation: toastIn 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.toast.success {
    border-left-color: var(--accent-color);
}

.toast.error {
    border-left-color: #ef4444;
}

.toast i {
    font-size: 1.2rem;
}

.toast.success i {
    color: var(--accent-color);
}

.toast.error i {
    color: #ef4444;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.toast-close {
    color: var(--text-muted);
    padding: 4px;
    transition: var(--transition);
}

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

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text p {
        margin: 0 auto 30px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        display: none;
    }

    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .trade-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .trade-stats {
        justify-content: center;
    }

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .products-layout {
        grid-template-columns: 1fr;
    }

    .filters-sidebar {
        position: static;
    }

    .products-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
    }

    .product-gallery {
        position: static;
    }

    .cart-layout {
        grid-template-columns: 1fr;
    }

    .trade-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .account-layout {
        grid-template-columns: 1fr;
    }

    .checkout-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .search-container {
        display: none;
    }

    .header-actions {
        gap: 4px;
    }

    .header-action .action-text {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero {
        padding: 40px 20px;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .category-card {
        padding: 16px 12px;
    }

    .category-icon {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .category-card span {
        font-size: 0.85rem;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .trade-stats {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .products-list {
        grid-template-columns: 1fr;
    }

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

    .trade-list {
        grid-template-columns: 1fr;
    }

    .trade-hero {
        padding: 30px 20px;
    }

    .trade-hero h1 {
        font-size: 1.75rem;
    }

    .trade-search {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-text h1 {
        font-size: 1.75rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .product-actions {
        flex-direction: column;
    }

    .action-buttons {
        flex-direction: column;
    }

    .cart-item {
        flex-direction: column;
    }

    .cart-item-image {
        width: 100%;
        height: 150px;
    }

    .modal {
        margin: 10px;
    }
}

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

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

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

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 40px auto;
}

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