/*
Theme Name: XCHANGE Storefront
Theme URI: https://example.com/xchange-storefront
Author: Your Company
Author URI: https://example.com
Description: A modern storefront theme for XCHANGE products
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: xchange-storefront
Tags: e-commerce, shop, products, xchange
*/

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --bg-gray: #f9fafb;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

button, .btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: background 0.3s;
}

button:hover, .btn:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-gray);
    color: var(--text-color);
}

.btn-secondary:hover {
    background: #e5e7eb;
}

header.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.site-logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-nav a {
    font-weight: 500;
    color: var(--text-color);
}

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

main.site-main {
    min-height: 60vh;
    padding: 40px 0;
}

footer.site-footer {
    background: var(--text-color);
    color: var(--white);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    text-align: center;
}

.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
    border-radius: 12px;
    margin-bottom: 40px;
}

.hero-section h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 800;
}

.hero-section p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.shop-filters {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.filter-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-color);
}

.filter-group input,
.filter-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: var(--bg-gray);
}

.product-details {
    padding: 20px;
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.product-sku {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.product-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-single {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.product-single-image {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.product-single-details h1 {
    font-size: 32px;
    margin-bottom: 15px;
}

.product-single-price {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.product-single-description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination a,
.pagination span {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--white);
    color: var(--text-color);
}

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

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

.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero-section h1 {
        font-size: 32px;
    }

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

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