/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #000;
    --color-secondary: #666;
    --color-accent: #333;
    --color-bg: #fff;
    --color-bg-alt: #f8f8f8;
    --color-border: #e0e0e0;
    --color-text: #1a1a1a;
    --color-text-light: #666;
    --color-sale: #d32f2f;
    --color-success: #2e7d32;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --transition: all 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

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

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

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

/* Header */
.header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.logo-monogram {
    flex-shrink: 0;
}

.logo-wordmark {
    display: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition);
    padding: var(--spacing-xs) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

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

.search-toggle,
.account-toggle,
.cart-link {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    position: relative;
    text-decoration: none;
}

.cart-link {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--color-primary);
    color: var(--color-bg);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.search-bar {
    display: none;
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-alt);
}

.search-bar.active {
    display: block;
}

.search-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: var(--spacing-xs);
}

.search-form input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1rem;
}

.search-form button {
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    cursor: pointer;
}

/* Main Content */
.main-content {
    flex: 1;
    min-height: calc(100vh - 200px);
}

/* Footer */
.footer {
    background: var(--color-text);
    color: var(--color-bg);
    margin-top: auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--color-bg);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xs);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-xs);
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-bg);
    border-radius: 4px;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-form button {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg);
    color: var(--color-text);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.6);
}

/* Page Styles */
.page {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.page-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.page-subtitle {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    background: var(--color-bg-alt);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-bg);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-bg);
}

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

.product-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    display: block;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.product-image-wrapper {
    position: relative;
    padding-top: 100%;
    background: var(--color-bg-alt);
    overflow: hidden;
}

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

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

.product-badges {
    position: absolute;
    top: var(--spacing-xs);
    left: var(--spacing-xs);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.badge {
    padding: 4px 8px;
    background: var(--color-primary);
    color: var(--color-bg);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

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

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

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

.product-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.product-price {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.price-current {
    color: var(--color-text);
}

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

.price-sale {
    color: var(--color-sale);
}

/* Product Detail */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.product-gallery {
    display: grid;
    gap: var(--spacing-sm);
}

.product-main-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    background: var(--color-bg-alt);
}

.product-thumbnails {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.thumbnail {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 3px solid var(--color-border);
    transition: var(--transition);
    background: var(--color-bg-alt);
}

.thumbnail:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.thumbnail.active {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.product-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.product-detail-price {
    font-size: 1.5rem;
    font-weight: 600;
}

.stock-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
}

.stock-in {
    background: #e8f5e9;
    color: var(--color-success);
}

.stock-low {
    background: #fff3e0;
    color: #f57c00;
}

.stock-out {
    background: #ffebee;
    color: var(--color-sale);
}

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

.variant-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.variant-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.variant-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.variant-option {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--color-border);
    background: var(--color-bg);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.variant-option:hover {
    border-color: var(--color-primary);
}

.variant-option.selected {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-bg);
}

.variant-option.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition);
}

.color-swatch:hover {
    transform: scale(1.1);
}

.color-swatch.selected {
    border-color: var(--color-primary);
    border-width: 3px;
}

.add-to-cart-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.add-to-cart-btn:hover {
    background: var(--color-accent);
}

.add-to-cart-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.product-description {
    margin-top: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-light);
}

/* Cart */
.cart-items {
    margin-bottom: var(--spacing-xl);
}

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

.cart-item-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 4px;
}

.cart-item-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.cart-item-title {
    font-weight: 600;
}

.cart-item-variant {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: var(--spacing-xs);
}

.quantity-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    font-size: 1.2rem;
}

.quantity-input {
    width: 50px;
    text-align: center;
    border: none;
    font-size: 1rem;
}

.cart-item-price {
    font-weight: 600;
    font-size: 1.1rem;
}

.remove-item {
    background: none;
    border: none;
    color: var(--color-sale);
    cursor: pointer;
    padding: var(--spacing-xs);
}

.cart-summary {
    background: var(--color-bg-alt);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
}

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

.cart-summary-row.total {
    font-size: 1.25rem;
    font-weight: 700;
    padding-top: var(--spacing-sm);
    border-top: 2px solid var(--color-border);
    margin-top: var(--spacing-sm);
}

.promo-section {
    margin-bottom: var(--spacing-md);
}

.promo-input {
    display: flex;
    gap: var(--spacing-xs);
}

.promo-input input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

.free-shipping-banner {
    background: var(--color-success);
    color: var(--color-bg);
    padding: var(--spacing-sm);
    text-align: center;
    border-radius: 4px;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

/* Checkout */
.checkout-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.cod-notice {
    background: var(--color-bg-alt);
    padding: var(--spacing-md);
    border-radius: 4px;
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
}

/* Order Confirmation */
.order-confirmation {
    text-align: center;
    padding: var(--spacing-xl);
}

.order-id {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: var(--spacing-md) 0;
}

/* Filters */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg-alt);
    border-radius: 8px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.filter-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg);
}

/* Loading */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-light);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-light);
}

/* Related Products */
.related-products {
    margin-top: var(--spacing-xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
    .logo-wordmark {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        display: none;
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .product-detail {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: var(--spacing-sm);
    }
    
    .cart-item-price,
    .quantity-control {
        grid-column: 2;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }
    
    .product-thumbnails {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .page {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .products-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .product-thumbnails {
        grid-template-columns: repeat(3, 1fr);
        gap: 4px;
    }
    
    .thumbnail {
        border-width: 2px;
    }
}