/**
 * OneKey Theme - Main Stylesheet
 * Stripe-inspired UI/UX Design
 * Mobile-first responsive
 *
 * @package OneKey
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --onekey-primary: #635bff;
    --onekey-primary-hover: #5650e6;
    --onekey-primary-light: #f0f0ff;
    --onekey-secondary: #0a2540;
    --onekey-text: #1a1a1a;
    --onekey-text-light: #6b7280;
    --onekey-text-muted: #9ca3af;
    --onekey-border: #e5e7eb;
    --onekey-border-light: #f3f4f6;
    --onekey-bg: #ffffff;
    --onekey-bg-light: #f9fafb;
    --onekey-bg-dark: #0a2540;
    --onekey-success: #10b981;
    --onekey-error: #ef4444;
    --onekey-warning: #f59e0b;
    --onekey-font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --onekey-font-size: 16px;
    --onekey-line-height: 1.6;
    --onekey-spacing-xs: 0.25rem;
    --onekey-spacing-sm: 0.5rem;
    --onekey-spacing-md: 1rem;
    --onekey-spacing-lg: 1.5rem;
    --onekey-spacing-xl: 2rem;
    --onekey-spacing-2xl: 3rem;
    --onekey-spacing-3xl: 4rem;
    --onekey-radius-sm: 4px;
    --onekey-radius-md: 8px;
    --onekey-radius-lg: 12px;
    --onekey-radius-xl: 16px;
    --onekey-radius-full: 9999px;
    --onekey-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --onekey-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --onekey-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --onekey-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --onekey-transition: 0.2s ease;
    --onekey-container: 1200px;
    --onekey-container-narrow: 800px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: var(--onekey-font-size); scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--onekey-font-family); font-size: 1rem; line-height: var(--onekey-line-height); color: var(--onekey-text); background-color: var(--onekey-bg); -webkit-font-smoothing: antialiased; }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
a { color: var(--onekey-primary); text-decoration: none; transition: color var(--onekey-transition); }
a:hover { color: var(--onekey-primary-hover); }
h1, h2, h3, h4, h5, h6 { margin: 0 0 var(--onekey-spacing-md); font-weight: 600; line-height: 1.3; color: var(--onekey-secondary); }
h1 { font-size: 2.5rem; } h2 { font-size: 2rem; } h3 { font-size: 1.5rem; } h4 { font-size: 1.25rem; }
p { margin: 0 0 var(--onekey-spacing-md); }
ul, ol { margin: 0 0 var(--onekey-spacing-md); padding-left: var(--onekey-spacing-lg); }

.skip-link { position: absolute; top: -40px; left: 0; background: var(--onekey-primary); color: #fff; padding: 8px 16px; z-index: 9999; }
.skip-link:focus { top: 0; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Layout */
.container { width: 100%; max-width: var(--onekey-container); margin: 0 auto; padding: 0 var(--onekey-spacing-lg); }
.container--narrow { max-width: var(--onekey-container-narrow); }
.site { display: flex; flex-direction: column; min-height: 100vh; }
.site-main { flex: 1; }

/* Header */
.site-header { background: var(--onekey-bg); border-bottom: 1px solid var(--onekey-border); position: relative; z-index: 1000; }
.site-header--sticky { position: sticky; top: 0; }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--onekey-spacing-lg); padding: var(--onekey-spacing-md) 0; }
.site-header__logo { flex-shrink: 0; }
.site-header__logo img { max-height: 40px; width: auto; }
.site-title { font-size: 1.25rem; font-weight: 700; color: var(--onekey-secondary); }
.site-title:hover { color: var(--onekey-primary); }
.custom-logo-link { display: block; }

/* Navigation */
.site-nav { display: none; }
.nav__list { display: flex; align-items: center; gap: var(--onekey-spacing-xl); list-style: none; margin: 0; padding: 0; }
.nav__list li { margin: 0; }
.nav__list a { color: var(--onekey-text); font-size: 0.9375rem; font-weight: 500; padding: var(--onekey-spacing-sm) 0; display: block; }
.nav__list a:hover, .nav__list .current-menu-item > a { color: var(--onekey-primary); }

.nav-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 32px; height: 32px; padding: 4px; background: none; border: none; cursor: pointer; }
.nav-toggle__bar { display: block; width: 100%; height: 2px; background: var(--onekey-text); border-radius: 2px; transition: var(--onekey-transition); }

.site-header__actions { display: flex; align-items: center; gap: var(--onekey-spacing-md); }
.header-cart, .header-account { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; color: var(--onekey-text); border-radius: var(--onekey-radius-full); transition: var(--onekey-transition); position: relative; }
.header-cart:hover, .header-account:hover { background: var(--onekey-bg-light); color: var(--onekey-primary); }
.header-cart__count { position: absolute; top: 0; right: 0; min-width: 18px; height: 18px; background: var(--onekey-primary); color: #fff; font-size: 0.6875rem; font-weight: 600; border-radius: var(--onekey-radius-full); display: flex; align-items: center; justify-content: center; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--onekey-spacing-sm); padding: 0.75rem 1.5rem; font-size: 0.9375rem; font-weight: 600; line-height: 1; text-align: center; white-space: nowrap; border: 2px solid transparent; border-radius: var(--onekey-radius-md); cursor: pointer; transition: var(--onekey-transition); }
.btn--primary { background: var(--onekey-primary); color: #fff; }
.btn--primary:hover { background: var(--onekey-primary-hover); color: #fff; }
.btn--outline { background: transparent; border-color: var(--onekey-border); color: var(--onekey-text); }
.btn--outline:hover { border-color: var(--onekey-primary); color: var(--onekey-primary); }
.btn--sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn--lg { padding: 1rem 2rem; font-size: 1rem; }
.btn--block { width: 100%; }

.edd-add-to-cart, .edd-submit, #edd-purchase-button { display: inline-flex; align-items: center; justify-content: center; gap: var(--onekey-spacing-sm); padding: 0.875rem 1.75rem; font-size: 1rem; font-weight: 600; background: var(--onekey-primary); color: #fff; border: none; border-radius: var(--onekey-radius-md); cursor: pointer; transition: var(--onekey-transition); }
.edd-add-to-cart:hover, .edd-submit:hover, #edd-purchase-button:hover { background: var(--onekey-primary-hover); }

/* Hero */
.hero { background: linear-gradient(180deg, var(--onekey-bg-light) 0%, var(--onekey-bg) 100%); padding: var(--onekey-spacing-3xl) 0; text-align: center; }
.hero__content { max-width: 700px; margin: 0 auto; }
.hero__title { font-size: 2.5rem; font-weight: 700; margin-bottom: var(--onekey-spacing-md); color: var(--onekey-secondary); }
.hero__subtitle { font-size: 1.25rem; color: var(--onekey-text-light); margin-bottom: var(--onekey-spacing-xl); }

/* Sections */
.section { padding: var(--onekey-spacing-3xl) 0; }
.section--products { background: var(--onekey-bg); }
.section--benefits { background: var(--onekey-bg-light); }
.section--testimonials { background: var(--onekey-bg); }
.section--cta { background: var(--onekey-bg-dark); color: #fff; }
.section__header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--onekey-spacing-xl); }
.section__header--center { justify-content: center; text-align: center; }
.section__title { font-size: 1.75rem; margin: 0; }
.section__link { display: inline-flex; align-items: center; gap: var(--onekey-spacing-xs); font-weight: 500; color: var(--onekey-primary); }

/* Products Grid */
.products-grid { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-xl); }
.product-card { background: var(--onekey-bg); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-lg); overflow: hidden; transition: var(--onekey-transition); }
.product-card:hover { box-shadow: var(--onekey-shadow-lg); transform: translateY(-2px); }
.product-card__link { display: block; color: inherit; }
.product-card__link:hover { color: inherit; }
.product-card__image { aspect-ratio: 4/3; background: var(--onekey-bg-light); overflow: hidden; }
.product-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-card:hover .product-card__image img { transform: scale(1.05); }
.product-card__placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: var(--onekey-text-muted); }
.product-card__content { padding: var(--onekey-spacing-lg); }
.product-card__categories { margin-bottom: var(--onekey-spacing-sm); }
.product-card__category { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-primary); }
.product-card__title { font-size: 1.125rem; font-weight: 600; margin: 0 0 var(--onekey-spacing-sm); color: var(--onekey-secondary); }
.product-card__excerpt { font-size: 0.9375rem; color: var(--onekey-text-light); margin: 0 0 var(--onekey-spacing-md); line-height: 1.5; }
.product-card__footer { display: flex; align-items: center; justify-content: space-between; padding-top: var(--onekey-spacing-md); border-top: 1px solid var(--onekey-border-light); }
.product-card__price { font-size: 1.125rem; font-weight: 700; color: var(--onekey-secondary); }
.product-card__action { display: inline-flex; align-items: center; gap: var(--onekey-spacing-xs); font-size: 0.875rem; font-weight: 500; color: var(--onekey-primary); }

/* Benefits */
.benefits-grid { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-xl); }
.benefit-card { background: var(--onekey-bg); padding: var(--onekey-spacing-xl); border-radius: var(--onekey-radius-lg); text-align: center; border: 1px solid var(--onekey-border); }
.benefit-card__icon { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; background: var(--onekey-primary-light); color: var(--onekey-primary); border-radius: var(--onekey-radius-lg); margin-bottom: var(--onekey-spacing-md); }
.benefit-card__title { font-size: 1.125rem; font-weight: 600; margin: 0 0 var(--onekey-spacing-sm); }
.benefit-card__desc { font-size: 0.9375rem; color: var(--onekey-text-light); margin: 0; }

/* Testimonials */
.testimonials-grid { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-xl); }
.testimonial-card { background: var(--onekey-bg); padding: var(--onekey-spacing-xl); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-lg); margin: 0; }
.testimonial-card__stars { color: #fbbf24; font-size: 1rem; margin-bottom: var(--onekey-spacing-md); }
.testimonial-card__content { font-size: 1rem; color: var(--onekey-text); margin: 0 0 var(--onekey-spacing-lg); font-style: normal; }
.testimonial-card__footer { display: flex; flex-direction: column; gap: var(--onekey-spacing-xs); }
.testimonial-card__author { font-style: normal; font-weight: 600; color: var(--onekey-secondary); }
.testimonial-card__role { font-size: 0.875rem; color: var(--onekey-text-light); }

/* CTA */
.cta-box { text-align: center; padding: var(--onekey-spacing-xl) 0; }
.cta-box__title { font-size: 2rem; color: #fff; margin-bottom: var(--onekey-spacing-md); }
.cta-box__desc { font-size: 1.125rem; color: rgba(255,255,255,0.8); margin-bottom: var(--onekey-spacing-xl); max-width: 600px; margin-left: auto; margin-right: auto; }

/* Page Header */
.page-header { background: var(--onekey-bg-light); padding: var(--onekey-spacing-2xl) 0; border-bottom: 1px solid var(--onekey-border); }
.page-header__title { font-size: 2rem; margin: 0; }
.page-header__desc { font-size: 1.125rem; color: var(--onekey-text-light); margin: var(--onekey-spacing-sm) 0 0; }

/* Breadcrumb */
.breadcrumb { margin-bottom: var(--onekey-spacing-md); }
.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: var(--onekey-spacing-sm); list-style: none; margin: 0; padding: 0; }
.breadcrumb__item { display: flex; align-items: center; font-size: 0.875rem; }
.breadcrumb__item:not(:last-child)::after { content: '/'; margin-left: var(--onekey-spacing-sm); color: var(--onekey-text-muted); }
.breadcrumb__link { color: var(--onekey-text-light); }
.breadcrumb__link:hover { color: var(--onekey-primary); }
.breadcrumb__current { color: var(--onekey-text); }

/* Archive Toolbar */
.archive-toolbar { display: flex; flex-direction: column; gap: var(--onekey-spacing-md); margin-bottom: var(--onekey-spacing-xl); }
.archive-toolbar__count { font-size: 0.9375rem; color: var(--onekey-text-light); }
.archive-toolbar__filter { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-sm); }
.filter-link { display: inline-block; padding: var(--onekey-spacing-sm) var(--onekey-spacing-md); font-size: 0.875rem; font-weight: 500; color: var(--onekey-text); background: var(--onekey-bg); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-full); transition: var(--onekey-transition); }
.filter-link:hover { border-color: var(--onekey-primary); color: var(--onekey-primary); }
.filter-link--active { background: var(--onekey-primary); border-color: var(--onekey-primary); color: #fff; }
.filter-link--active:hover { color: #fff; }

/* Single Product */
.single-product { padding: var(--onekey-spacing-xl) 0 var(--onekey-spacing-3xl); }
.single-product__grid { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-2xl); margin-bottom: var(--onekey-spacing-3xl); }
.product-gallery { background: var(--onekey-bg-light); border-radius: var(--onekey-radius-lg); overflow: hidden; }
.product-gallery__main { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.product-gallery--placeholder { aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; color: var(--onekey-text-muted); }
.product-categories { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-sm); margin-bottom: var(--onekey-spacing-sm); }
.product-category { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-primary); background: var(--onekey-primary-light); padding: var(--onekey-spacing-xs) var(--onekey-spacing-sm); border-radius: var(--onekey-radius-sm); }
.single-product__title { font-size: 2rem; margin-bottom: var(--onekey-spacing-md); }
.single-product__excerpt { font-size: 1.125rem; color: var(--onekey-text-light); margin-bottom: var(--onekey-spacing-lg); }
.single-product__meta { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-lg); padding-bottom: var(--onekey-spacing-lg); border-bottom: 1px solid var(--onekey-border); margin-bottom: var(--onekey-spacing-lg); }
.product-meta__item { display: inline-flex; align-items: center; gap: var(--onekey-spacing-sm); font-size: 0.9375rem; color: var(--onekey-text-light); }
.single-product__purchase { background: var(--onekey-bg-light); padding: var(--onekey-spacing-xl); border-radius: var(--onekey-radius-lg); margin-bottom: var(--onekey-spacing-lg); }
.product-price { margin-bottom: var(--onekey-spacing-md); }
.product-price__amount { font-size: 2rem; font-weight: 700; color: var(--onekey-secondary); }
.product-purchased { display: flex; align-items: center; gap: var(--onekey-spacing-sm); color: var(--onekey-success); font-weight: 500; margin-bottom: var(--onekey-spacing-md); }
.product-features { display: flex; flex-direction: column; gap: var(--onekey-spacing-md); }
.product-feature { display: flex; align-items: center; gap: var(--onekey-spacing-md); font-size: 0.9375rem; color: var(--onekey-text-light); }
.product-feature svg { flex-shrink: 0; color: var(--onekey-success); }
.single-product__content h2 { font-size: 1.5rem; margin-bottom: var(--onekey-spacing-lg); }
.product-content { font-size: 1rem; line-height: 1.75; }
.product-content p { margin-bottom: var(--onekey-spacing-lg); }
.single-product__tags { margin-top: var(--onekey-spacing-2xl); padding-top: var(--onekey-spacing-xl); border-top: 1px solid var(--onekey-border); }
.single-product__tags h3 { font-size: 1rem; margin-bottom: var(--onekey-spacing-md); }
.product-tags { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-sm); }
.product-tag { display: inline-block; padding: var(--onekey-spacing-sm) var(--onekey-spacing-md); font-size: 0.875rem; color: var(--onekey-text); background: var(--onekey-bg-light); border-radius: var(--onekey-radius-sm); }
.product-tag:hover { background: var(--onekey-primary-light); color: var(--onekey-primary); }
.single-product__related { margin-top: var(--onekey-spacing-3xl); padding-top: var(--onekey-spacing-2xl); border-top: 1px solid var(--onekey-border); }
.single-product__related h2 { font-size: 1.5rem; margin-bottom: var(--onekey-spacing-xl); }

/* EDD Checkout */
#edd_checkout_cart { width: 100%; border-collapse: collapse; margin-bottom: var(--onekey-spacing-xl); }
#edd_checkout_cart th, #edd_checkout_cart td { padding: var(--onekey-spacing-md); text-align: left; border-bottom: 1px solid var(--onekey-border); }
#edd_checkout_cart th { font-weight: 600; color: var(--onekey-secondary); background: var(--onekey-bg-light); }
#edd_checkout_cart .edd_cart_item_name { font-weight: 500; }
#edd_checkout_cart .edd_cart_total { font-weight: 700; font-size: 1.125rem; }
#edd_checkout_form_wrap fieldset { border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-lg); padding: var(--onekey-spacing-xl); margin-bottom: var(--onekey-spacing-xl); }
#edd_checkout_form_wrap legend { font-size: 1.125rem; font-weight: 600; color: var(--onekey-secondary); padding: 0 var(--onekey-spacing-sm); }
#edd_checkout_form_wrap label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: var(--onekey-spacing-sm); color: var(--onekey-text); }
#edd_checkout_form_wrap input[type="text"], #edd_checkout_form_wrap input[type="email"], #edd_checkout_form_wrap input[type="tel"], #edd_checkout_form_wrap input[type="password"], #edd_checkout_form_wrap select, #edd_checkout_form_wrap textarea { width: 100%; padding: 0.75rem 1rem; font-size: 1rem; border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-md); transition: var(--onekey-transition); }
#edd_checkout_form_wrap input:focus, #edd_checkout_form_wrap select:focus, #edd_checkout_form_wrap textarea:focus { outline: none; border-color: var(--onekey-primary); box-shadow: 0 0 0 3px var(--onekey-primary-light); }
.checkout-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--onekey-spacing-xl); padding: var(--onekey-spacing-lg) 0; margin-top: var(--onekey-spacing-lg); border-top: 1px solid var(--onekey-border); }
.checkout-trust__item { display: flex; align-items: center; gap: var(--onekey-spacing-sm); font-size: 0.875rem; color: var(--onekey-text-light); }
.checkout-trust__item svg { color: var(--onekey-success); }

/* Pagination */
.pagination { margin-top: var(--onekey-spacing-2xl); }
.pagination__list { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: var(--onekey-spacing-sm); list-style: none; margin: 0; padding: 0; }
.pagination__link { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 var(--onekey-spacing-md); font-size: 0.9375rem; font-weight: 500; color: var(--onekey-text); background: var(--onekey-bg); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-md); transition: var(--onekey-transition); }
.pagination__link:hover { border-color: var(--onekey-primary); color: var(--onekey-primary); }
.pagination__link--current { background: var(--onekey-primary); border-color: var(--onekey-primary); color: #fff; }

/* No Results */
.no-results { text-align: center; padding: var(--onekey-spacing-3xl) var(--onekey-spacing-lg); }
.no-results svg { color: var(--onekey-text-muted); margin: 0 auto var(--onekey-spacing-lg); }
.no-results h2 { font-size: 1.5rem; margin-bottom: var(--onekey-spacing-md); }
.no-results p { color: var(--onekey-text-light); margin-bottom: var(--onekey-spacing-xl); }

/* 404 */
.section--404 { min-height: 60vh; display: flex; align-items: center; }
.error-page { text-align: center; max-width: 500px; margin: 0 auto; }
.error-page__code { font-size: 8rem; font-weight: 700; line-height: 1; color: var(--onekey-border); margin-bottom: var(--onekey-spacing-md); }
.error-page__title { font-size: 2rem; margin-bottom: var(--onekey-spacing-md); }
.error-page__desc { color: var(--onekey-text-light); margin-bottom: var(--onekey-spacing-xl); }
.error-page__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--onekey-spacing-md); }

/* Search */
.search-form__wrapper { display: flex; gap: var(--onekey-spacing-sm); }
.search-form__input { flex: 1; padding: 0.75rem 1rem; font-size: 1rem; border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-md); transition: var(--onekey-transition); }
.search-form__input:focus { outline: none; border-color: var(--onekey-primary); box-shadow: 0 0 0 3px var(--onekey-primary-light); }
.search-form__button { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: var(--onekey-primary); color: #fff; border: none; border-radius: var(--onekey-radius-md); cursor: pointer; transition: var(--onekey-transition); }
.search-form__button:hover { background: var(--onekey-primary-hover); }
.search-results { display: flex; flex-direction: column; gap: var(--onekey-spacing-lg); }
.search-result { display: flex; gap: var(--onekey-spacing-lg); padding: var(--onekey-spacing-lg); background: var(--onekey-bg); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-lg); }
.search-result__image { flex-shrink: 0; width: 100px; height: 100px; border-radius: var(--onekey-radius-md); overflow: hidden; }
.search-result__image img { width: 100%; height: 100%; object-fit: cover; }
.search-result__content { flex: 1; }
.search-result__type { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-primary); }
.search-result__title { font-size: 1.125rem; margin: var(--onekey-spacing-xs) 0 var(--onekey-spacing-sm); }
.search-result__title a { color: var(--onekey-secondary); }
.search-result__title a:hover { color: var(--onekey-primary); }
.search-result__excerpt { font-size: 0.9375rem; color: var(--onekey-text-light); margin: 0; }

/* Posts Grid */
.posts-grid { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-xl); }
.post-card { background: var(--onekey-bg); border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-lg); overflow: hidden; transition: var(--onekey-transition); }
.post-card:hover { box-shadow: var(--onekey-shadow-lg); }
.post-card__image { display: block; aspect-ratio: 16/9; overflow: hidden; }
.post-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.post-card:hover .post-card__image img { transform: scale(1.05); }
.post-card__content { padding: var(--onekey-spacing-lg); }
.post-card__category { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-primary); }
.post-card__title { font-size: 1.25rem; margin: var(--onekey-spacing-sm) 0 var(--onekey-spacing-md); }
.post-card__title a { color: var(--onekey-secondary); }
.post-card__title a:hover { color: var(--onekey-primary); }
.post-card__excerpt { font-size: 0.9375rem; color: var(--onekey-text-light); margin: 0 0 var(--onekey-spacing-md); }
.post-card__footer { display: flex; align-items: center; gap: var(--onekey-spacing-md); font-size: 0.875rem; color: var(--onekey-text-muted); }

/* Single Post */
.single-post__header { background: var(--onekey-bg-light); padding: var(--onekey-spacing-2xl) 0; text-align: center; }
.single-post__category { display: inline-block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-primary); margin-bottom: var(--onekey-spacing-md); }
.single-post__title { font-size: 2.5rem; max-width: 800px; margin: 0 auto var(--onekey-spacing-lg); }
.single-post__meta { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--onekey-spacing-md); font-size: 0.9375rem; color: var(--onekey-text-light); }
.single-post__author { display: flex; align-items: center; gap: var(--onekey-spacing-sm); }
.single-post__author img { border-radius: var(--onekey-radius-full); }
.single-post__thumbnail { margin-top: var(--onekey-spacing-xl); }
.single-post__thumbnail img { width: 100%; border-radius: var(--onekey-radius-lg); }
.single-post__content { padding: var(--onekey-spacing-2xl) 0; }
.entry-content { font-size: 1.0625rem; line-height: 1.8; }
.entry-content p { margin-bottom: var(--onekey-spacing-lg); }
.entry-content h2, .entry-content h3, .entry-content h4 { margin-top: var(--onekey-spacing-2xl); margin-bottom: var(--onekey-spacing-md); }
.entry-content img { border-radius: var(--onekey-radius-md); margin: var(--onekey-spacing-xl) 0; }
.entry-content a { text-decoration: underline; }
.entry-content blockquote { margin: var(--onekey-spacing-xl) 0; padding: var(--onekey-spacing-lg) var(--onekey-spacing-xl); border-left: 4px solid var(--onekey-primary); background: var(--onekey-bg-light); font-style: italic; }
.entry-content blockquote p:last-child { margin-bottom: 0; }
.entry-content pre { background: var(--onekey-secondary); color: #fff; padding: var(--onekey-spacing-lg); border-radius: var(--onekey-radius-md); overflow-x: auto; font-size: 0.875rem; }
.entry-content code { background: var(--onekey-bg-light); padding: 0.125rem 0.375rem; border-radius: var(--onekey-radius-sm); font-size: 0.875em; }
.entry-content pre code { background: none; padding: 0; }
.single-post__footer { margin-top: var(--onekey-spacing-2xl); padding-top: var(--onekey-spacing-xl); border-top: 1px solid var(--onekey-border); }
.single-post__tags { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-sm); }
.post-tag { display: inline-block; font-size: 0.875rem; color: var(--onekey-text-light); }
.post-tag:hover { color: var(--onekey-primary); }
.post-navigation { padding: var(--onekey-spacing-xl) 0; border-top: 1px solid var(--onekey-border); }
.nav-links { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-lg); }
.nav-previous, .nav-next { padding: var(--onekey-spacing-lg); background: var(--onekey-bg-light); border-radius: var(--onekey-radius-lg); }
.nav-subtitle { display: block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--onekey-text-muted); margin-bottom: var(--onekey-spacing-xs); }
.nav-title { font-weight: 600; color: var(--onekey-secondary); }

/* Comments */
.comments-area { margin-top: var(--onekey-spacing-2xl); padding-top: var(--onekey-spacing-xl); border-top: 1px solid var(--onekey-border); }
.comments-title { font-size: 1.5rem; margin-bottom: var(--onekey-spacing-xl); }
.comment-list { list-style: none; padding: 0; margin: 0 0 var(--onekey-spacing-2xl); }
.comment-item { margin-bottom: var(--onekey-spacing-lg); padding-bottom: var(--onekey-spacing-lg); border-bottom: 1px solid var(--onekey-border-light); }
.comment-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--onekey-spacing-md); }
.comment-author { display: flex; align-items: center; gap: var(--onekey-spacing-sm); }
.comment-avatar { border-radius: var(--onekey-radius-full); }
.comment-author-name { font-weight: 600; }
.comment-date { font-size: 0.875rem; color: var(--onekey-text-muted); }
.comment-content { font-size: 0.9375rem; }
.comment-content p:last-child { margin-bottom: 0; }
.comment-actions { display: flex; gap: var(--onekey-spacing-md); margin-top: var(--onekey-spacing-md); }
.comment-actions a { font-size: 0.875rem; color: var(--onekey-text-light); }
.comment-actions a:hover { color: var(--onekey-primary); }
.comment-reply-title { font-size: 1.25rem; margin-bottom: var(--onekey-spacing-lg); }
.comment-form p { margin-bottom: var(--onekey-spacing-md); }
.comment-form label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: var(--onekey-spacing-sm); }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea { width: 100%; padding: 0.75rem 1rem; font-size: 1rem; border: 1px solid var(--onekey-border); border-radius: var(--onekey-radius-md); transition: var(--onekey-transition); }
.comment-form input:focus, .comment-form textarea:focus { outline: none; border-color: var(--onekey-primary); box-shadow: 0 0 0 3px var(--onekey-primary-light); }

/* Footer */
.site-footer { background: var(--onekey-bg-dark); color: #fff; padding: var(--onekey-spacing-3xl) 0 var(--onekey-spacing-xl); }
.site-footer__top { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-2xl); margin-bottom: var(--onekey-spacing-2xl); }
.site-footer__brand { max-width: 300px; }
.site-footer__logo { max-height: 40px; width: auto; margin-bottom: var(--onekey-spacing-md); }
.site-footer__title { font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: var(--onekey-spacing-md); }
.site-footer__about { font-size: 0.9375rem; color: rgba(255,255,255,0.7); margin-bottom: var(--onekey-spacing-lg); }
.site-footer__widgets { display: grid; grid-template-columns: 1fr; gap: var(--onekey-spacing-xl); }
.site-footer__widget .widget-title { font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255,255,255,0.5); margin-bottom: var(--onekey-spacing-md); }
.site-footer__widget ul { list-style: none; padding: 0; margin: 0; }
.site-footer__widget li { margin-bottom: var(--onekey-spacing-sm); }
.site-footer__widget a { color: rgba(255,255,255,0.8); font-size: 0.9375rem; }
.site-footer__widget a:hover { color: #fff; }
.site-footer__bottom { display: flex; flex-direction: column; gap: var(--onekey-spacing-lg); padding-top: var(--onekey-spacing-xl); border-top: 1px solid rgba(255,255,255,0.1); }
.site-footer__copyright { font-size: 0.875rem; color: rgba(255,255,255,0.5); }
.social-links { display: flex; gap: var(--onekey-spacing-md); }
.social-links__item { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; color: rgba(255,255,255,0.7); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--onekey-radius-md); transition: var(--onekey-transition); }
.social-links__item:hover { color: #fff; border-color: rgba(255,255,255,0.5); }
.payment-methods { display: flex; gap: var(--onekey-spacing-sm); }
.payment-methods__item { display: flex; align-items: center; opacity: 0.7; }
.footer-nav__list { display: flex; flex-wrap: wrap; gap: var(--onekey-spacing-md) var(--onekey-spacing-lg); list-style: none; padding: 0; margin: 0; }
.footer-nav__list a { font-size: 0.875rem; color: rgba(255,255,255,0.6); }
.footer-nav__list a:hover { color: #fff; }

/* Responsive - Tablet */
@media (min-width: 768px) {
    h1 { font-size: 3rem; } h2 { font-size: 2.25rem; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .benefits-grid { grid-template-columns: repeat(3, 1fr); }
    .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .posts-grid { grid-template-columns: repeat(2, 1fr); }
    .single-product__grid { grid-template-columns: 1fr 1fr; }
    .hero__title { font-size: 3rem; }
    .archive-toolbar { flex-direction: row; align-items: center; justify-content: space-between; }
    .site-footer__top { grid-template-columns: 1fr 2fr; }
    .site-footer__widgets { grid-template-columns: repeat(3, 1fr); }
    .site-footer__bottom { flex-direction: row; align-items: center; justify-content: space-between; }
    .nav-links { grid-template-columns: repeat(2, 1fr); }
}

/* Responsive - Desktop */
@media (min-width: 1024px) {
    .site-nav { display: block; }
    .nav-toggle { display: none; }
    .products-grid { grid-template-columns: repeat(3, 1fr); }
    .hero { padding: var(--onekey-spacing-3xl) 0 calc(var(--onekey-spacing-3xl) * 1.5); }
    .hero__title { font-size: 3.5rem; }
    .single-product__title { font-size: 2.5rem; }
}

/* Print */
@media print {
    .site-header, .site-footer, .nav-toggle, .site-header__actions, .pagination, .comment-form { display: none; }
    body { font-size: 12pt; line-height: 1.5; color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
    .container { max-width: 100%; padding: 0; }
}