/* ===================================================
   Helpu — Ecommerce (Shop / Product / Cart / Checkout)
   =================================================== */

.shop-layout { display: grid; grid-template-columns: 240px 1fr; gap: var(--sp-6); align-items: start; }
.shop-filters { position: sticky; top: calc(var(--header-h) + 16px); background: var(--color-surface); border-radius: var(--radius-md); padding: var(--sp-5); box-shadow: var(--shadow-sm); }
.filter-group { margin-bottom: var(--sp-5); }
.filter-group h4 { font-size: var(--fs-sm); margin-bottom: var(--sp-2); }
.filter-group label { display: flex; align-items: center; gap: 8px; font-size: var(--fs-sm); padding: 4px 0; color: var(--color-text-muted); }
.shop-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--sp-5); }
.shop-toolbar select { padding: 8px 12px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); }
@media (max-width: 900px) { .shop-layout { grid-template-columns: 1fr; } .shop-filters { position: static; } }

.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-5); }
@media (max-width: 1024px) { .product-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }

.product-card { display: flex; flex-direction: column; }
.product-card-media { display: block; position: relative; aspect-ratio: 1/1; overflow: hidden; background: var(--color-primary-light); }
.product-card-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.product-card-media .badge { position: absolute; top: var(--sp-2); left: var(--sp-2); }
.wishlist-btn { position: absolute; top: var(--sp-2); right: var(--sp-2); width: 32px; height: 32px; border-radius: 50%; background: #fff; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-sm); }
.product-card-body { padding: var(--sp-4); flex: 1; display: flex; flex-direction: column; }
.product-card-body .cat { font-size: var(--fs-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.product-card-body h4 { font-size: var(--fs-sm); margin: 4px 0; }
.price-row { display: flex; align-items: baseline; gap: 8px; margin: 6px 0 var(--sp-3); }
.price-now { font-family: var(--font-heading); font-weight: 700; color: var(--color-primary); font-size: var(--fs-md); }
.price-was { text-decoration: line-through; color: var(--color-text-muted); font-size: var(--fs-xs); }
.price-off { color: var(--color-success); font-size: var(--fs-xs); font-weight: 600; }
.stars { color: var(--color-gold); font-size: var(--fs-xs); }

/* Product detail page */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
.product-gallery-main { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 1/1; margin-bottom: var(--sp-3); }
.product-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.product-gallery-thumbs { display: flex; gap: var(--sp-2); }
.product-gallery-thumbs img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--radius-sm); cursor: pointer; border: 2px solid transparent; }
.product-gallery-thumbs img.active { border-color: var(--color-accent); }
.product-info h1 { font-size: var(--fs-xl); }
.qty-selector { display: flex; align-items: center; gap: var(--sp-3); margin: var(--sp-4) 0; }
.qty-selector button { width: 36px; height: 36px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: var(--fs-md); }
.qty-selector input { width: 48px; text-align: center; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 8px; }
.product-actions { display: flex; gap: var(--sp-3); margin: var(--sp-5) 0; }
.product-meta-list li { padding: 4px 0; font-size: var(--fs-sm); color: var(--color-text-muted); }
.product-tabs { display: flex; gap: var(--sp-5); border-bottom: 1px solid var(--color-border); margin: var(--sp-7) 0 var(--sp-5); }
.product-tab { padding: var(--sp-3) 0; font-weight: 600; color: var(--color-text-muted); border-bottom: 2px solid transparent; }
.product-tab.active { color: var(--color-primary); border-color: var(--color-accent); }
.product-tab-panel { display: none; }
.product-tab-panel.active { display: block; }
@media (max-width: 900px) { .product-detail { grid-template-columns: 1fr; } }

/* Cart page */
.cart-layout { display: grid; grid-template-columns: 1fr 340px; gap: var(--sp-6); align-items: start; }
.cart-item { display: grid; grid-template-columns: 90px 1fr auto auto; gap: var(--sp-4); align-items: center; padding: var(--sp-4) 0; border-bottom: 1px solid var(--color-border); }
.cart-item img { width: 90px; height: 90px; object-fit: cover; border-radius: var(--radius-sm); }
.cart-item-remove { color: var(--color-error); font-size: var(--fs-xs); font-weight: 600; }
.cart-summary { background: var(--color-surface); border-radius: var(--radius-md); padding: var(--sp-5); box-shadow: var(--shadow-sm); position: sticky; top: calc(var(--header-h) + 16px); }
.summary-row { display: flex; justify-content: space-between; padding: var(--sp-2) 0; font-size: var(--fs-sm); }
.summary-row.total { font-weight: 700; font-size: var(--fs-md); border-top: 1px solid var(--color-border); margin-top: var(--sp-3); padding-top: var(--sp-3); color: var(--color-primary); }
.promo-row { display: flex; gap: var(--sp-2); margin: var(--sp-4) 0; }
.promo-row input { flex: 1; padding: 10px 12px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); }
.empty-state { text-align: center; padding: var(--sp-9) 0; }
.empty-state .icon { font-size: 48px; margin-bottom: var(--sp-4); }
@media (max-width: 900px) { .cart-layout { grid-template-columns: 1fr; } .cart-item { grid-template-columns: 64px 1fr; } .cart-item img { width: 64px; height: 64px; } }

/* Checkout */
.checkout-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--sp-8); align-items: start; }
.checkout-steps { display: flex; gap: var(--sp-5); margin-bottom: var(--sp-6); }
.checkout-step { font-size: var(--fs-xs); font-weight: 600; color: var(--color-text-muted); display: flex; align-items: center; gap: 6px; }
.checkout-step.active { color: var(--color-accent); }
.checkout-step .num { width: 22px; height: 22px; border-radius: 50%; background: var(--color-border); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 11px; }
.checkout-step.active .num { background: var(--color-accent); }
.order-line { display: flex; justify-content: space-between; font-size: var(--fs-sm); padding: 6px 0; }
.payment-methods { display: grid; gap: var(--sp-3); margin: var(--sp-4) 0; }
.payment-method { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-4); border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer; }
.payment-method.selected { border-color: var(--color-accent); background: var(--color-accent-light); }
@media (max-width: 900px) { .checkout-layout { grid-template-columns: 1fr; } }

.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--color-primary); color: #fff;
  padding: 14px 22px; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); font-size: var(--fs-sm);
  transform: translateY(120%); transition: transform 0.3s ease; z-index: 999;
}
.toast.show { transform: translateY(0); }