body { display: flex; flex-direction: column; min-height: 100vh; }
.site-main { flex: 1; padding-bottom: 1rem; }

/* ---------- Cabecera y menú ---------- */
.site-header { background: var(--header-bg); color: var(--header-color); border-bottom: 1px solid var(--header-border); }
.site-header .container { display: flex; align-items: center; min-height: 4rem; }
.header-bar { gap: 1rem; flex-wrap: wrap; padding-block: .5rem; }
.brand { font-family: var(--font-heading); font-size: 1.25rem; font-weight: var(--heading-weight); letter-spacing: var(--heading-spacing); text-transform: var(--heading-transform); text-decoration: none; }
.brand img { width: auto; max-height: 2.5rem; }

.search-form { position: relative; display: flex; flex: 1; gap: .4rem; min-width: 14rem; max-width: 32rem; margin-inline: auto; }
.search-form input { flex: 1; min-width: 0; padding: .5rem .75rem; border: 1px solid var(--header-border); border-radius: var(--radius); background: #fff; color: var(--color-text); }
.search-suggestions { position: absolute; top: 100%; left: 0; right: 0; z-index: 10; margin: .25rem 0 0; padding: 0; list-style: none; background: #fff; color: var(--color-text); border-radius: var(--radius); box-shadow: 0 8px 24px rgb(0 0 0 / .2); overflow: hidden; }
.search-suggestions a { display: flex; justify-content: space-between; gap: 1rem; padding: .6rem .9rem; text-decoration: none; }
.search-suggestions a:hover, .search-suggestions a:focus { background: var(--color-surface); }
.search-suggestions__price { color: var(--color-muted); white-space: nowrap; }

.cart-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--header-color); font-weight: 600; text-decoration: none; }
.cart-link__count { display: inline-block; min-width: 1.5rem; padding: .05rem .4rem; border-radius: var(--radius-pill); background: var(--color-primary); color: var(--on-primary); font-size: .8rem; line-height: 1.4; text-align: center; }

.site-nav { background: var(--nav-bg); }
.site-nav .container { display: flex; gap: 1.25rem; padding-block: .6rem; overflow-x: auto; scrollbar-width: thin; }
.site-nav a { flex: none; color: var(--nav-color); font-weight: 500; text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }

/* ---------- Portada ---------- */
.hero { padding: 3rem 0; background: var(--hero-bg); color: var(--hero-color); }
.hero h1 { margin-bottom: 0; font-size: clamp(1.75rem, 5vw, 3rem); }
.hero__lead { margin-top: .75rem; max-width: 40rem; opacity: .9; }
.hero p:last-child { margin-top: 1.25rem; }

.home-section { padding-block: 2rem; }
.catalog { padding-bottom: 2rem; }
.catalog__lead { margin-bottom: 1rem; color: var(--color-muted); }
.catalog__count { margin: 1rem 0; color: var(--color-muted); font-size: .9rem; }

.site-footer { padding: 1.5rem 0; background: var(--color-surface); color: var(--color-muted); font-size: .9rem; }
.site-footer__contact { margin-top: .25rem; }

.error-page { padding: 4rem 0; text-align: center; }
.error-page h1 { font-size: 4rem; color: var(--color-primary); }
.error-page .btn { margin-top: 1rem; }

.diagnostics { margin: 2rem auto; }
.diagnostics summary { cursor: pointer; font-weight: 600; }
.diagnostics table { margin-top: .5rem; width: 100%; font-size: .9rem; }
.diagnostics th, .diagnostics td { padding: .35rem .75rem; border: 1px solid var(--color-border); text-align: left; }
.diagnostics th { width: 12rem; background: var(--color-surface); }

/* ---------- Catálogo ---------- */
.filters { display: flex; flex-wrap: wrap; align-items: end; gap: .75rem; margin: 1rem 0; padding: 1rem; background: var(--color-surface); border-radius: var(--radius); }
.filters label { display: flex; flex-direction: column; gap: .2rem; font-size: .85rem; }
.filters input, .filters select { padding: .45rem .5rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; }
.filters input[type="number"] { width: 7rem; }
.filters__reset { align-self: center; font-size: .9rem; color: var(--color-muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr)); gap: 1.25rem; }
.card { display: flex; flex-direction: column; border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; background: #fff; transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card__media { position: relative; display: block; background: var(--color-surface); }
.card__media img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
.card__body { padding: .75rem; }
.card__title { font-family: var(--font-body); font-size: 1rem; font-weight: 600; letter-spacing: normal; text-transform: none; }
.card__title a { text-decoration: none; }
.card__title a:hover { text-decoration: underline; }
.card__price { margin-top: .25rem; }
.card__price s { color: var(--color-muted); margin-left: .4rem; font-size: .9rem; }

/* ---------- Producto ---------- */
.product { padding-bottom: 2rem; }
.product__layout { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 2rem; }
.product__image { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); background: var(--color-surface); }
.thumbs { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; margin: .75rem 0 0; list-style: none; }
.thumbs a { display: block; }
.thumbs img { width: 4.5rem; height: 4.5rem; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--color-border); }
.thumbs a:hover img { border-color: var(--color-primary); }
.product__price { margin: .75rem 0; font-size: 1.5rem; }
.product__price s { margin-left: .5rem; font-size: 1rem; color: var(--color-muted); }
.product__lead { margin-bottom: .75rem; color: var(--color-muted); }
.stock--in { color: var(--color-success); }
.stock--out { color: var(--color-danger); }
.buy { display: flex; flex-wrap: wrap; align-items: end; gap: .75rem; margin-top: 1rem; }
.buy label { display: flex; flex-direction: column; gap: .2rem; font-size: .85rem; }
.buy select, .buy input { padding: .55rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; }
.buy input[type="number"] { width: 5.5rem; }
.product__description, .related { margin-top: 2.5rem; }

/* ---------- Carrito ---------- */
.cart, .checkout { padding-block: 1.5rem 3rem; }

.cart__layout, .checkout__layout { display: grid; gap: 1.5rem; align-items: start; }

.cart-lines { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }

.cart-line {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr) auto;
    grid-template-areas:
        "image  info  remove"
        "image  qty   total";
    gap: .5rem 1rem;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
}
.cart-line__image { grid-area: image; align-self: start; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); background: var(--color-surface); }
.cart-line__info { grid-area: info; display: flex; flex-direction: column; gap: .15rem; min-width: 0; }
.cart-line__name { font-weight: 600; text-decoration: none; overflow-wrap: anywhere; }
.cart-line__name:hover { text-decoration: underline; }
.cart-line__qty { grid-area: qty; display: flex; align-items: center; gap: .5rem; }
.cart-line__qty input { width: 4.5rem; padding: .4rem .5rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; text-align: center; }
.cart-line__qty .btn { border-color: var(--color-border); background: var(--color-surface); color: var(--color-text); }
.cart-line__total { grid-area: total; text-align: right; white-space: nowrap; }
.cart-line__remove { grid-area: remove; justify-self: end; align-self: start; }
.cart-line--issue { border-color: var(--color-danger); background: var(--color-danger-bg); }
.cart-line__issue { color: var(--color-danger); font-size: .875rem; font-weight: 600; }

/* ---------- Resumen del pedido (carrito, checkout y confirmación) ---------- */
.summary { padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); }
.summary h2 { margin-bottom: .75rem; font-size: 1.15rem; }
.summary .alert { margin-block: .75rem; }
.summary .muted { margin-top: .75rem; }
.summary .btn { margin-top: 1rem; }
.summary__back { margin-top: 1rem; text-align: center; font-size: .9rem; }

.summary__lines { margin: 0; padding: 0; list-style: none; font-size: .95rem; }
.summary__lines li { display: flex; justify-content: space-between; gap: 1rem; padding: .4rem 0; border-bottom: 1px solid var(--color-border); }
.summary__lines li span:last-child { white-space: nowrap; }

.summary__rows { margin: .5rem 0 0; }
.summary__rows > div { display: flex; justify-content: space-between; gap: 1rem; padding: .3rem 0; }
.summary__rows dd { margin: 0; }
.summary__rows .summary__total { margin-top: .4rem; padding-top: .7rem; border-top: 1px solid var(--color-border); font-size: 1.15rem; font-weight: 700; }

/* ---------- Checkout ---------- */
.checkout-form { display: grid; gap: 1.25rem; min-width: 0; }
.checkout-form fieldset { padding: 1rem 1.25rem 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; }
.checkout-form legend { padding: 0 .5rem; font-family: var(--font-heading); font-weight: var(--heading-weight); text-transform: var(--heading-transform); letter-spacing: var(--heading-spacing); }
.checkout-form fieldset > * + * { margin-top: .9rem; }
.checkout-form fieldset > .choice + .choice { margin-top: .6rem; }
.checkout .alert strong { display: block; }

/* Campos cortos uno al lado del otro (2 o 3 columnas); una sola columna en móvil */
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .9rem; }
.field-row--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 40rem) { .field-row, .field-row--3 { grid-template-columns: minmax(0, 1fr); } }

/* Panel que se despliega al elegir "Tarjeta" (formulario de Mercado Pago dentro del checkout) */
.pay-panel { padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; }
.pay-panel .alert { margin-bottom: .75rem; }

/* ---------- Confirmación del pedido ---------- */
.order { width: min(100% - 2rem, 48rem); padding-block: 2rem 3rem; }
.order h1 { display: flex; align-items: center; gap: .75rem; }
.order h1::before { content: "\2713"; flex: none; display: inline-grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: 50%; background: var(--color-success); color: #fff; font-size: 1.2rem; line-height: 1; }
.order__lead { margin-bottom: 1.5rem; font-size: 1.05rem; }
.order__box { margin-top: 1rem; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; }
.order__box h2 { margin-bottom: .5rem; font-size: 1.1rem; }
.order > p:last-child { margin-top: 1.5rem; }

/* ---------- Variantes por tema (<body class="theme-...">) ---------- */
.theme-hardware .site-header { border-top: 4px solid var(--color-primary); }
.theme-hardware .site-nav { border-bottom: 4px solid var(--color-primary); }
.theme-hardware .card { border-top: 3px solid var(--color-primary); }
.theme-hardware .badge { border-radius: 0; }

.theme-fashion .brand { font-size: 1.5rem; letter-spacing: .15em; text-transform: uppercase; }
.theme-fashion .site-nav { border-bottom: 1px solid var(--header-border); }
.theme-fashion .site-nav .container { gap: 2rem; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; }
.theme-fashion .site-nav a:first-child { margin-left: auto; }
.theme-fashion .site-nav a:last-child { margin-right: auto; }
.theme-fashion .card { border: 0; background: transparent; }
.theme-fashion .card:hover { box-shadow: none; transform: none; }
.theme-fashion .card__media img { aspect-ratio: 3 / 4; }
.theme-fashion .card__body { padding-inline: 0; }
.theme-fashion .summary { border: 0; }
.theme-fashion .hero { padding-block: 5rem; text-align: center; }
.theme-fashion .hero__lead { margin-inline: auto; }

.theme-automotive .site-header { border-bottom: 3px solid var(--color-primary); }
.theme-automotive .card:hover { border-color: var(--color-primary); }
.theme-automotive .hero { padding-block: 4rem; }

/* ---------- Pantallas medianas y grandes ---------- */
@media (min-width: 40rem) {
    .cart-line {
        grid-template-columns: 5rem minmax(0, 1fr) auto 6.5rem auto;
        grid-template-areas: "image info qty total remove";
        align-items: center;
    }
    .cart-line__image { align-self: center; }
    .cart-line__remove { align-self: center; }
}

@media (min-width: 56rem) {
    .cart__layout, .checkout__layout { grid-template-columns: minmax(0, 1fr) 22rem; }
    .summary { position: sticky; top: 1rem; }
}

/* ---------- Impresión (comprobante del pedido) ---------- */
@media print {
    .site-header, .site-nav, .site-footer, .toasts, .order .btn { display: none !important; }
    .order__box { border-color: #999; break-inside: avoid; }
}