/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height-mobile);
}
@media (min-width: 1024px) { .site-header { height: var(--header-height); } }

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.header-search { display: none; flex: 1; position: relative; }
@media (min-width: 1024px) { .header-search { display: block; } }
.header-search input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}
.search-suggestions {
    position: absolute;
    inset-inline: 0;
    top: calc(100% + 6px);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 360px;
    overflow-y: auto;
    z-index: 50;
}
.search-suggestions:empty { display: none; }
.search-suggestions a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
}
.search-suggestions a:hover { background: var(--color-surface-alt); }
.search-suggestions img { width: 36px; height: 36px; border-radius: var(--radius-sm); object-fit: cover; }

.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-inline-start: auto; }
.icon-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    color: var(--color-text);
}
.icon-btn:hover { background: var(--color-surface-alt); }
.icon-btn .count {
    position: absolute;
    top: -2px; inset-inline-end: -2px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.65rem;
    min-width: 16px; height: 16px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    padding: 0 3px;
}
.header-cats { display: none; }
@media (min-width: 1024px) { .header-cats { display: flex; gap: var(--space-4); } }
.hamburger { display: inline-flex; }
@media (min-width: 1024px) { .hamburger { display: none; } }

/* ==========================================================================
   Mobile drawer / off-canvas menu (spec §7)
   ========================================================================== */
.drawer-overlay {
    position: fixed; inset: 0;
    background: var(--color-overlay);
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}
.drawer-overlay.is-open { opacity: 1; pointer-events: auto; }

.drawer {
    position: fixed;
    top: 0; bottom: 0;
    inset-inline-start: 0;
    width: min(320px, 85vw);
    background: var(--color-background);
    z-index: 201;
    transform: translateX(-105%);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}
html[dir="rtl"] .drawer { transform: translateX(105%); }
.drawer.is-open { transform: translateX(0); }
.drawer__head {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}
.drawer__body { overflow-y: auto; padding: var(--space-2) 0; flex: 1; }

.drawer-menu-item { border-bottom: 1px solid var(--color-border); }
.drawer-menu-item > button, .drawer-menu-item > a {
    width: 100%;
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-4);
    font-weight: 600;
    text-align: start;
}
.drawer-submenu { display: none; padding-inline-start: var(--space-5); background: var(--color-surface); }
.drawer-menu-item.is-open .drawer-submenu { display: block; }
.drawer-menu-item.is-open > button .chevron { transform: rotate(90deg); }
.chevron { transition: transform var(--transition-fast); }

/* ==========================================================================
   Hero slider (spec §9)
   ========================================================================== */
.hero-slider {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface-alt);
}
.hero-slider__track { display: flex; transition: transform var(--transition-base); touch-action: pan-y; }
.hero-slide {
    min-width: 100%;
    display: grid;
    align-items: center;
    padding: var(--space-6);
    min-height: 220px;
    color: #fff;
    background-size: cover;
    background-position: center;
}
@media (min-width: 768px) { .hero-slide { min-height: 340px; padding: var(--space-8); } }
.hero-slide__title { font-size: 1.5rem; margin-bottom: var(--space-2); }
@media (min-width: 768px) { .hero-slide__title { font-size: 2.2rem; } }
.hero-slide__subtitle { margin-bottom: var(--space-4); opacity: 0.9; }
.hero-nav {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.85); color: #111;
    display: flex; align-items: center; justify-content: center;
    z-index: 5;
}
.hero-nav--prev { inset-inline-start: var(--space-3); }
.hero-nav--next { inset-inline-end: var(--space-3); }
.hero-dots { position: absolute; bottom: var(--space-3); inset-inline: 0; display: flex; justify-content: center; gap: var(--space-2); z-index: 5; }
.hero-dots button { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.6); }
.hero-dots button.is-active { background: #fff; width: 22px; border-radius: var(--radius-pill); }

/* ==========================================================================
   Category tiles / brand strip
   ========================================================================== */
.category-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
@media (min-width: 768px) { .category-tiles { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .category-tiles { grid-template-columns: repeat(8, 1fr); } }
.category-tile { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); text-align: center; }
.category-tile__icon {
    width: 64px; height: 64px; border-radius: 50%;
    background: var(--color-surface-alt);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: var(--color-primary);
    transition: background var(--transition-fast);
}
.category-tile:hover .category-tile__icon { background: var(--color-primary); color: #fff; }

.brand-strip { display: flex; gap: var(--space-5); flex-wrap: wrap; align-items: center; justify-content: center; }
.brand-chip {
    padding: var(--space-3) var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    font-weight: 600;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Promo banner
   ========================================================================== */
.promo-banner {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: flex; flex-direction: column; gap: var(--space-3); align-items: flex-start;
}

/* ==========================================================================
   Product card (spec §12)
   ========================================================================== */
.product-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-card__media { position: relative; aspect-ratio: 1/1; background: var(--color-surface-alt); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; }
.product-card__badges { position: absolute; top: var(--space-2); inset-inline-start: var(--space-2); display: flex; flex-direction: column; gap: 4px; }
.product-card__wishlist {
    position: absolute; top: var(--space-2); inset-inline-end: var(--space-2);
    width: 34px; height: 34px; border-radius: 50%;
    background: rgba(255,255,255,0.9); color: #111;
    display: flex; align-items: center; justify-content: center;
}
:root[data-theme="dark"] .product-card__wishlist { background: rgba(20,20,30,0.85); color: #fff; }
.product-card__wishlist.is-active { color: var(--color-sale); }
.product-card__quick-view {
    position: absolute; bottom: var(--space-2); inset-inline: var(--space-2);
    opacity: 0; transform: translateY(6px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.product-card:hover .product-card__quick-view { opacity: 1; transform: translateY(0); }
.product-card__body { padding: var(--space-3); display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card__brand { font-size: 0.75rem; color: var(--color-text-muted); }
.product-card__name {
    font-size: 0.92rem; font-weight: 600;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    min-height: 2.6em;
}
.product-card__rating { display: flex; align-items: center; gap: 4px; font-size: 0.78rem; color: var(--color-text-muted); }
.product-card__price { margin-top: auto; display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px; }
.product-card__stock { font-size: 0.75rem; }
.product-card__stock.out { color: var(--color-danger); }
.product-card__stock.in { color: var(--color-success); }
.product-card__add {
    margin: 0 var(--space-3) var(--space-3);
}

/* ==========================================================================
   Breadcrumb (spec §38)
   ========================================================================== */
.breadcrumb { display: flex; flex-wrap: wrap; gap: var(--space-2); font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--space-4); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb li:not(:last-child)::after { content: '‹'; margin-inline-start: var(--space-2); }

/* ==========================================================================
   Toast / notification system (spec §33)
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: var(--space-4);
    inset-inline: var(--space-4);
    z-index: 500;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    align-items: center;
}
@media (min-width: 768px) { .toast-container { inset-inline-start: auto; inset-inline-end: var(--space-5); align-items: flex-end; } }
.toast {
    pointer-events: auto;
    background: var(--color-text);
    color: var(--color-background);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex; align-items: center; gap: var(--space-3);
    max-width: 340px;
    animation: toast-in var(--transition-base);
}
.toast--success { border-inline-start: 4px solid var(--color-success); }
.toast--error { border-inline-start: 4px solid var(--color-danger); }
.toast--info { border-inline-start: 4px solid var(--color-info); }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px);} to {opacity:1; transform:none;} }

/* ==========================================================================
   Filters (desktop sidebar + mobile bottom sheet), spec §10
   ========================================================================== */
.category-layout { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 1024px) { .category-layout { grid-template-columns: 260px 1fr; } }

.filters-desktop { display: none; }
@media (min-width: 1024px) { .filters-desktop { display: block; } }
.filter-group { padding-block: var(--space-4); border-bottom: 1px solid var(--color-border); }
.filter-group h4 { margin-bottom: var(--space-3); font-size: 0.95rem; }
.filter-option { display: flex; align-items: center; gap: var(--space-2); padding: 4px 0; font-size: 0.88rem; }

.mobile-filter-bar { display: flex; gap: var(--space-2); margin-bottom: var(--space-4); }
@media (min-width: 1024px) { .mobile-filter-bar { display: none; } }

.bottom-sheet-overlay {
    position: fixed; inset: 0; background: var(--color-overlay);
    z-index: 300; opacity: 0; pointer-events: none; transition: opacity var(--transition-base);
}
.bottom-sheet-overlay.is-open { opacity: 1; pointer-events: auto; }
.bottom-sheet {
    position: fixed; inset-inline: 0; bottom: 0;
    max-height: 80vh; overflow-y: auto;
    background: var(--color-background);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    z-index: 301;
    transform: translateY(100%);
    transition: transform var(--transition-base);
    padding: var(--space-4);
}
.bottom-sheet.is-open { transform: translateY(0); }
.bottom-sheet__handle { width: 40px; height: 4px; border-radius: var(--radius-pill); background: var(--color-border); margin: 0 auto var(--space-3); }

/* ==========================================================================
   Product gallery (spec §13)
   ========================================================================== */
.product-gallery { display: flex; flex-direction: column-reverse; gap: var(--space-3); }
@media (min-width: 768px) { .product-gallery { flex-direction: row; } }
.gallery-thumbs { display: flex; gap: var(--space-2); overflow-x: auto; }
@media (min-width: 768px) { .gallery-thumbs { flex-direction: column; overflow-x: visible; } }
.gallery-thumbs img { width: 64px; height: 64px; object-fit: cover; border-radius: var(--radius-sm); border: 2px solid transparent; cursor: pointer; flex-shrink: 0; }
.gallery-thumbs img.is-active { border-color: var(--color-primary); }
.gallery-main { flex: 1; aspect-ratio: 1/1; background: var(--color-surface); border-radius: var(--radius-lg); overflow: hidden; cursor: zoom-in; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-base); }
.gallery-main.is-zoomed img { transform: scale(1.6); }

.variant-swatches { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.variant-swatch {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
}
.variant-swatch.is-selected { border-color: var(--color-primary); color: var(--color-primary); font-weight: 700; }

.qty-stepper { display: inline-flex; align-items: center; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.qty-stepper button { width: 38px; height: 38px; }
.qty-stepper input { width: 44px; text-align: center; border: none; background: transparent; }

/* ==========================================================================
   Review
   ========================================================================== */
.review-item { border-bottom: 1px solid var(--color-border); padding-block: var(--space-4); }
.review-item__head { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); }
.stars { color: var(--color-warning); letter-spacing: 1px; }
.verified-badge { font-size: 0.72rem; color: var(--color-success); }

/* ==========================================================================
   Cart / checkout
   ========================================================================== */
.cart-layout { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 1024px) { .cart-layout { grid-template-columns: 2fr 1fr; align-items: start; } }
.cart-line { display: grid; grid-template-columns: 72px 1fr auto; gap: var(--space-3); padding-block: var(--space-4); border-bottom: 1px solid var(--color-border); align-items: center; }
.cart-line img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--radius-md); }
.cart-summary { position: sticky; top: calc(var(--header-height) + var(--space-4)); }
.summary-row { display: flex; justify-content: space-between; padding-block: var(--space-2); }
.summary-row.total { font-weight: 800; font-size: 1.1rem; border-top: 1px solid var(--color-border); padding-top: var(--space-3); margin-top: var(--space-2); }

.checkout-steps { display: flex; gap: var(--space-2); overflow-x: auto; margin-bottom: var(--space-5); }
.checkout-step { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-3); border-radius: var(--radius-pill); background: var(--color-surface-alt); font-size: 0.82rem; white-space: nowrap; flex-shrink: 0; }
.checkout-step.is-active { background: var(--color-primary); color: #fff; }
.checkout-step.is-done { background: var(--color-success); color: #fff; }
.checkout-panel { display: none; }
.checkout-panel.is-active { display: block; animation: fade-in var(--transition-base); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.shipping-option, .payment-option {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
    cursor: pointer;
}
.shipping-option.is-selected, .payment-option.is-selected { border-color: var(--color-primary); background: var(--color-surface); }

/* ==========================================================================
   Footer (spec §24)
   ========================================================================== */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--color-border); margin-top: var(--space-8); }
.footer-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; padding-block: var(--space-7); }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(4, 1fr); } }
.footer-col h5 { margin-bottom: var(--space-3); font-size: 0.95rem; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a:hover { color: var(--color-primary); }
.newsletter-form { display: flex; gap: var(--space-2); }
.newsletter-form input { flex: 1; padding: var(--space-3); border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-background); }
.social-links { display: flex; gap: var(--space-3); }
.social-links a { width: 36px; height: 36px; border-radius: 50%; background: var(--color-surface-alt); display: flex; align-items: center; justify-content: center; }
.footer-bottom { border-top: 1px solid var(--color-border); padding-block: var(--space-4); text-align: center; font-size: 0.82rem; color: var(--color-text-muted); }
.payment-icons { display: flex; gap: var(--space-2); justify-content: center; margin-block: var(--space-3); flex-wrap: wrap; }
.payment-icons span { border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 2px var(--space-2); font-size: 0.72rem; color: var(--color-text-muted); }

/* ==========================================================================
   Theme switcher + misc
   ========================================================================== */
.theme-toggle { display: inline-flex; align-items: center; gap: 4px; }
.theme-toggle .icon-btn svg { transition: transform var(--transition-base); }

.tabs { display: flex; gap: var(--space-2); border-bottom: 1px solid var(--color-border); overflow-x: auto; }
.tab-btn { padding: var(--space-3) var(--space-4); font-weight: 600; color: var(--color-text-muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tab-btn.is-active { color: var(--color-primary); border-color: var(--color-primary); }
.tab-panel { display: none; padding-block: var(--space-4); }
.tab-panel.is-active { display: block; }

.pagination { display: flex; justify-content: center; gap: var(--space-2); margin-top: var(--space-6); }
.pagination a, .pagination span { min-width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .is-active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { border: 1px solid var(--color-border); padding: var(--space-3); text-align: center; vertical-align: top; }
.compare-table th:first-child, .compare-table td:first-child { text-align: start; background: var(--color-surface); }

.account-layout { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 1024px) { .account-layout { grid-template-columns: 240px 1fr; } }
.account-nav a { display: block; padding: var(--space-3); border-radius: var(--radius-md); }
.account-nav a.is-active, .account-nav a:hover { background: var(--color-surface-alt); color: var(--color-primary); }
.stat-card { padding: var(--space-4); text-align: center; }
.stat-card strong { display: block; font-size: 1.4rem; }

.status-pill { display: inline-flex; padding: 2px var(--space-3); border-radius: var(--radius-pill); font-size: 0.78rem; background: var(--color-surface-alt); }

.order-table { width: 100%; border-collapse: collapse; }
.order-table th, .order-table td { padding: var(--space-3); border-bottom: 1px solid var(--color-border); text-align: start; font-size: 0.88rem; }

.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary { padding: var(--space-4) 0; font-weight: 600; cursor: pointer; }
.faq-item p { padding-bottom: var(--space-4); color: var(--color-text-muted); }