/* Sistema visual: referencia Allbirds (Refero) — lienzo blanco, arena cálida, píldoras, sin sombras. */
:root {
  --blanco: #ffffff;
  --carbon: #212121;
  --negro: #000000;
  --arena: #e0dacf;
  --avena: #ece9e2;
  --oliva: #222519;
  --hierro: #525252;
  --piedra: #737373;
  --niebla: #bdbab5;
  --linea: #e0dacf;
  --promo: #cb333b;   /* Pantone 1797 C */

  --serif: 'DM Serif Display', 'Playfair Display', Georgia, serif;
  --sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --max: 1200px;
  --r-tarjeta: 16px;
  --r-grande: 24px;
  --borde-campo: rgb(87, 87, 87) 0 0 0 1px inset;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--blanco);
  color: var(--carbon);
  font: 400 16px/1.5 var(--sans);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
:focus-visible { outline: 2px solid var(--carbon); outline-offset: 2px; }

.envoltura { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eti { font: 500 12px/1.25 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; }
.serif { font-family: var(--serif); font-weight: 400; letter-spacing: 0; }

/* Píldoras */
.pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 9999px; padding: 13px 26px;
  font: 500 13px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase;
  transition: background .2s, color .2s, box-shadow .2s;
  white-space: nowrap;
}
.pill--osc { background: var(--carbon); color: var(--blanco); }
.pill--osc:hover { background: var(--negro); }
.pill--clara { background: var(--blanco); color: var(--carbon); }
.pill--clara:hover { background: var(--avena); }
.pill--linea { box-shadow: inset 0 0 0 1px #6a6767; color: var(--carbon); }
.pill--linea:hover { box-shadow: inset 0 0 0 1.5px var(--carbon); }
.pill--ancha { width: 100%; padding: 17px 26px; }
.pill[disabled] { background: var(--niebla); cursor: not-allowed; }

/* Barra de aviso + navegación */
.aviso { background: var(--carbon); color: var(--blanco); text-align: center; font-size: 12px; padding: 9px 16px; letter-spacing: 0.03em; }
.nav { position: sticky; top: 0; z-index: 30; background: var(--blanco); border-bottom: 1px solid var(--linea); }
.nav__in { max-width: var(--max); margin: 0 auto; padding: 14px 24px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; }
.logo { font: 700 21px/1 var(--sans); letter-spacing: -0.02em; }
.nav__links { display: flex; gap: 32px; justify-content: center; }
.nav__links a { font: 500 12px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; padding: 6px 0; border-bottom: 1px solid transparent; }
.nav__links a:hover, .nav__links a.activo { border-color: var(--carbon); }
.nav__util { display: flex; gap: 6px; justify-content: flex-end; }
.icono { width: 40px; height: 40px; border-radius: 9999px; display: inline-grid; place-items: center; position: relative; }
.icono:hover { background: var(--avena); }
.nav__menu.icono { display: none; }
.bolsa__n { position: absolute; top: 3px; right: 2px; min-width: 18px; height: 18px; border-radius: 9999px; background: var(--carbon); color: #fff; font: 700 10px/18px var(--sans); text-align: center; padding: 0 5px; }
.buscador { max-width: var(--max); margin: 0 auto; padding: 0 24px 14px; }
.promo { background: var(--promo); color: var(--blanco); }
.promo__in { max-width: var(--max); margin: 0 auto; padding: 14px 24px; display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 12px 36px; }
.promo p { margin: 0; }
.promo__dato { display: flex; align-items: center; gap: 12px; }
.promo__dato b { font: 400 50px/1 var(--serif); letter-spacing: 0; }
.promo__dato span { max-width: 15ch; font-size: 14px; line-height: 1.25; }
.promo__cond { justify-self: end; text-align: right; }
.promo__cond b { display: inline-block; padding: 6px 16px; border-radius: 9999px; background: var(--blanco); color: var(--promo); font: 700 18px/1.2 var(--sans); }
.promo__cond span { display: block; margin-top: 6px; font-size: 14px; line-height: 1.25; }
@media (max-width: 960px) {
  .promo__in { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 16px; padding: 12px 16px; }
  .promo__dato { justify-content: center; gap: 10px; }
  .promo__dato b { font-size: 40px; }
  .promo__dato span { font-size: 12px; }
  .promo__cond { grid-column: 1 / -1; justify-self: stretch; text-align: center; padding-top: 10px; border-top: 1px solid rgba(255, 255, 255, .35); }
  .promo__cond b { padding: 5px 14px; font-size: 15px; }
  .promo__cond span { font-size: 12px; }
}
.buscador input, .campo input, .campo select, .boletin input {
  width: 100%; border: 0; border-radius: 4px; background: var(--blanco);
  box-shadow: var(--borde-campo); padding: 13px 14px; font: 400 14px/1.4 var(--sans); color: var(--carbon);
}
.buscador input::placeholder, .campo input::placeholder, .boletin input::placeholder { color: var(--hierro); }

/* Héroe */
.heroe { background: var(--arena); }
.heroe__in { max-width: var(--max); margin: 0 auto; padding: 56px 24px 0; display: grid; grid-template-columns: 1fr 1.25fr; gap: 24px; align-items: end; min-height: 520px; }
.heroe__texto { padding-bottom: 72px; }
.heroe h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(42px, 5.6vw, 68px); line-height: 1.02; margin: 16px 0 20px; letter-spacing: -0.01em; }
.heroe p { color: var(--oliva); max-width: 380px; margin: 0 0 28px; }
.heroe__botones { display: flex; gap: 12px; flex-wrap: wrap; }
.heroe__foto { position: relative; align-self: center; }
.heroe__foto img { mix-blend-mode: multiply; width: 100%; transform: rotate(-4deg); }
.heroe__ficha { position: absolute; left: 6%; bottom: 8%; background: var(--blanco); border-radius: 12px; padding: 12px 16px; font-size: 13px; display: flex; gap: 12px; align-items: center; }
.heroe__ficha .muestra { width: 34px; height: 34px; border-radius: 6px; }
.heroe__ficha b { display: block; font-weight: 700; }

/* Títulos de sección */
.seccion { padding: 56px 0; }
.titulo-sec { text-align: center; margin-bottom: 32px; }
.titulo-sec h2 { font: 700 15px/1.3 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; margin: 0; display: inline-block; }
.titulo-sec h2::after { content: ''; display: block; width: 32px; height: 1px; background: var(--negro); margin: 12px auto 0; }
.titulo-sec p { color: var(--hierro); font-size: 14px; margin: 14px 0 0; }

/* Tarjetas de color por marca */
.marcas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.marca-card { position: relative; border-radius: var(--r-tarjeta); overflow: hidden; aspect-ratio: 4 / 5; display: grid; place-items: center; transition: filter .25s; }
.marca-card img { width: 86%; mix-blend-mode: multiply; transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.marca-card:hover img { transform: scale(1.06) rotate(-2deg); }
.marca-card .eti { position: absolute; top: 16px; left: 16px; background: var(--blanco); border-radius: 9999px; padding: 8px 14px; }
.marca-card .cuenta { position: absolute; bottom: 16px; left: 18px; font-size: 13px; color: var(--oliva); }

/* Carrusel */
.carrusel { position: relative; }
.carrusel__pista { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 48px) / 4); gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding-bottom: 4px; }
.carrusel__pista::-webkit-scrollbar { display: none; }
.carrusel__pista > * { scroll-snap-align: start; }
.carrusel__flechas { display: flex; gap: 8px; justify-content: center; margin-top: 24px; }
.flecha { width: 36px; height: 36px; border-radius: 9999px; box-shadow: inset 0 0 0 1px var(--carbon); display: grid; place-items: center; background: var(--blanco); }
.flecha svg { width: 16px; height: 16px; }
.flecha:hover { background: var(--avena); }

/* Tarjeta de producto */
.prod { display: block; }
.prod__foto { position: relative; border-radius: var(--r-tarjeta); background: var(--blanco); aspect-ratio: 1; overflow: hidden; }
.prod__foto img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: opacity .35s, transform .5s cubic-bezier(.2,.7,.2,1); padding: 6%; }
.prod__foto img.alt { opacity: 0; }
.prod:hover .prod__foto img.pri { opacity: 0; }
.prod:hover .prod__foto img.alt { opacity: 1; }
.prod:hover .prod__foto img:only-of-type { opacity: 1; transform: scale(1.04); }
.prod__eti { position: absolute; top: 18px; left: 20px; z-index: 3; }
.prod__info { padding: 14px 4px 0; display: flex; justify-content: space-between; gap: 12px; }
.prod__nombre { font-weight: 700; font-size: 15px; line-height: 1.3; }
.prod__sub { color: var(--hierro); font-size: 13px; margin-top: 2px; }
.prod__precio { font-size: 14px; color: var(--hierro); white-space: nowrap; }
.puntos { display: flex; gap: 6px; padding: 10px 4px 0; }
.punto { width: 14px; height: 14px; border-radius: 9999px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.18); }
.punto.sel { outline: 1px solid var(--carbon); outline-offset: 2px; }

/* Marco técnico: contorno negro fino en reposo; al pasar el cursor una línea
   negra se traza alrededor de la foto y el dato técnico se enciende. */
.marco { box-shadow: inset 0 0 0 1px rgba(0,0,0,.22); transition: box-shadow .4s; }
.marco__trazo { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 2; pointer-events: none; overflow: visible; }
.marco__trazo rect {
  fill: none; stroke: var(--negro); stroke-width: 1.5px; vector-effect: non-scaling-stroke;
  stroke-dasharray: 0 101; opacity: 0;
  transition: stroke-dasharray .9s cubic-bezier(.65,0,.35,1), opacity 0s .9s;
}
.marco__dato {
  position: absolute; right: 18px; bottom: 16px; z-index: 3;
  font: 400 10px/1 'JetBrains Mono', ui-monospace, monospace; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--piedra); transition: color .4s;
}
.prod:hover .marco__trazo rect, .principal.marco:hover .marco__trazo rect { stroke-dasharray: 101 0; opacity: 1; transition-delay: 0s; }
.prod:hover .marco__dato, .principal.marco:hover .marco__dato { color: var(--negro); }
.prod__eti { font-family: 'JetBrains Mono', ui-monospace, monospace; font-weight: 400; font-size: 10px; letter-spacing: 0.12em; display: inline-flex; align-items: center; gap: 7px; }
.prod__eti::before { content: ''; width: 5px; height: 5px; border-radius: 9999px; background: var(--negro); }
@media (prefers-reduced-motion: reduce) { .marco__trazo rect { transition: none; } }

/* Bloque dividido */
.dividido { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dividido__a, .dividido__b { border-radius: var(--r-grande); overflow: hidden; position: relative; min-height: 520px; }
.dividido__a { background: #b9bdb0; color: var(--carbon); padding: 40px; display: flex; flex-direction: column; justify-content: flex-end; }
.dividido__a img { position: absolute; top: 4%; left: 50%; width: 78%; transform: translateX(-50%) rotate(-5deg); mix-blend-mode: multiply; }
.dividido__a h3 { font-family: var(--serif); font-weight: 400; font-size: 44px; line-height: 1.05; margin: 12px 0 20px; position: relative; }
.dividido__a p { position: relative; color: var(--oliva); max-width: 360px; margin: 0 0 24px; }
.dividido__a .eti, .dividido__a .pill { position: relative; }
.dividido__b { display: grid; place-items: center; }
.dividido__b img { width: 84%; mix-blend-mode: multiply; }
.pantone { position: absolute; left: 24px; bottom: 24px; background: var(--blanco); border-radius: 6px; padding: 8px 8px 12px; width: 132px; box-shadow: 0 0 0 1px rgba(0,0,0,.08); }
.pantone div { height: 74px; border-radius: 3px; }
.pantone b { display: block; font-size: 12px; margin-top: 8px; letter-spacing: 0.04em; }
.pantone span { display: block; font-size: 11px; color: var(--hierro); }

/* Ventajas */
.ventajas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ventaja { background: var(--avena); border-radius: var(--r-tarjeta); padding: 32px; }
.ventaja svg { width: 28px; height: 28px; margin-bottom: 16px; }
.ventaja h4 { margin: 0 0 6px; font-size: 16px; }
.ventaja p { margin: 0; color: var(--hierro); font-size: 14px; }

/* Tienda */
.tienda-cab { background: var(--avena); }
.tienda-cab .envoltura { padding-top: 48px; padding-bottom: 40px; }
.tienda-cab h1 { font-family: var(--serif); font-weight: 400; font-size: 46px; line-height: 1.1; margin: 10px 0 6px; }
.tienda-cab p { margin: 0; color: var(--hierro); }
.tienda { display: grid; grid-template-columns: 220px 1fr; gap: 40px; padding: 32px 0 80px; }
.filtros h5 { font: 700 12px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 14px; }
.filtro { padding: 20px 0; border-bottom: 1px solid var(--linea); }
.filtro:first-child { padding-top: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border-radius: 9999px; padding: 8px 14px; font-size: 13px; box-shadow: inset 0 0 0 1px var(--niebla); }
.chip:hover { box-shadow: inset 0 0 0 1px var(--carbon); }
.chip.sel { background: var(--carbon); color: var(--blanco); box-shadow: none; }
.colores { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.color-op { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 11px; color: var(--hierro); }
.color-op .punto { width: 26px; height: 26px; }
.color-op.sel .punto { outline: 1.5px solid var(--carbon); outline-offset: 2px; }
.color-op.sel { color: var(--carbon); font-weight: 500; }
.barra-tienda { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.barra-tienda .cuenta { font-size: 14px; color: var(--hierro); }
.orden { border: 0; box-shadow: inset 0 0 0 1px var(--niebla); border-radius: 9999px; padding: 9px 36px 9px 16px; font: 500 13px var(--sans); background: var(--blanco) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23212121' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center / 14px; appearance: none; color: var(--carbon); }
.rejilla { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 16px; }
.vacio { text-align: center; padding: 64px 0; color: var(--hierro); }
.btn-filtros { display: none; }

/* Ficha de producto */
.ficha { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; padding: 32px 0 64px; }
.migas { font-size: 13px; color: var(--hierro); padding-top: 24px; }
.migas a:hover { color: var(--carbon); text-decoration: underline; }
.galeria { display: grid; grid-template-columns: 76px 1fr; gap: 16px; align-self: start; position: sticky; top: 92px; }
.miniaturas { display: flex; flex-direction: column; gap: 10px; }
.miniaturas button { border-radius: 10px; background: var(--blanco); aspect-ratio: 1; overflow: hidden; box-shadow: inset 0 0 0 1px rgba(0,0,0,.14); transition: box-shadow .2s; }
.miniaturas button:hover { box-shadow: inset 0 0 0 1px rgba(0,0,0,.5); }
.miniaturas button.sel { box-shadow: inset 0 0 0 1.5px var(--negro); }
.miniaturas img { mix-blend-mode: multiply; width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.principal { border-radius: var(--r-grande); background: var(--blanco); aspect-ratio: 1; overflow: hidden; position: relative; }
.principal img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; padding: 5%; transition: transform .25s ease-out; user-select: none; }
/* Acercamiento con doble clic */
.principal { cursor: zoom-in; }
.principal.cerca { cursor: zoom-out; touch-action: none; }
.principal.cerca img { transition: transform .35s cubic-bezier(.2,.7,.2,1), transform-origin .12s linear; }
.principal.cerca .marco__trazo, .principal.cerca .marco__dato { opacity: 0; }
.principal__ayuda { position: absolute; left: 50%; top: 14px; transform: translateX(-50%); font: 500 11px/1 'JetBrains Mono', monospace; letter-spacing: .06em; text-transform: uppercase;
  color: var(--hierro); background: rgba(255,255,255,.85); padding: 7px 11px; border-radius: 99px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); opacity: 0; transition: opacity .25s; pointer-events: none; white-space: nowrap; }
.principal:hover .principal__ayuda { opacity: 1; }
.principal.cerca .principal__ayuda { opacity: 0; }
@media (hover: none) { .principal__ayuda { opacity: 1; } }
.compra .eti { color: var(--hierro); }
.compra h1 { font-family: var(--serif); font-weight: 400; font-size: 44px; line-height: 1.08; margin: 10px 0 8px; }
.compra .precio { font-size: 22px; margin: 0 0 4px; }
.compra .msi { font-size: 13px; color: var(--hierro); margin: 0 0 28px; }
.opcion { margin-bottom: 24px; }
.opcion__cab { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 12px; }
.opcion__cab b { font-weight: 500; }
.variantes { display: flex; gap: 10px; flex-wrap: wrap; }
.variante { width: 64px; height: 64px; border-radius: 12px; background: var(--blanco); overflow: hidden; box-shadow: inset 0 0 0 1px rgba(0,0,0,.14); }
.variante img { mix-blend-mode: multiply; width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.variante.sel { box-shadow: inset 0 0 0 1.5px var(--negro); }
.medidas { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--blanco); box-shadow: inset 0 0 0 1px var(--negro); border-radius: 12px; text-align: center; padding: 16px 8px; }
.medidas div + div { border-left: 1px solid rgba(0,0,0,.14); }
.medidas b { display: block; font-size: 18px; }
.medidas span { font-size: 12px; color: var(--hierro); }
.existencia { display: flex; align-items: center; gap: 8px; font-size: 14px; margin: 0 0 16px; }
.existencia::before { content: ''; width: 8px; height: 8px; border-radius: 9999px; background: #5f7f62; }
.acciones { display: grid; gap: 10px; margin-bottom: 28px; }
.acordeon { border-top: 1px solid var(--linea); }
.acordeon details { border-bottom: 1px solid var(--linea); }
.acordeon summary { list-style: none; cursor: pointer; padding: 18px 0; font: 500 13px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; display: flex; justify-content: space-between; }
.acordeon summary::-webkit-details-marker { display: none; }
.acordeon summary::after { content: '+'; font-size: 18px; font-weight: 400; line-height: 13px; }
.acordeon details[open] summary::after { content: '–'; }
.acordeon .cont { padding: 0 0 20px; font-size: 14px; color: var(--hierro); }
.acordeon .cont p { margin: 0 0 10px; }
.tabla { width: 100%; border-collapse: collapse; }
.tabla td { padding: 7px 0; border-bottom: 1px solid var(--avena); }
.tabla td:last-child { text-align: right; color: var(--carbon); }

/* Cajón de bolsa */
.cajon { position: fixed; inset: 0; z-index: 50; pointer-events: none; }
.cajon__fondo { position: absolute; inset: 0; background: rgba(33,33,33,.35); opacity: 0; transition: opacity .3s; }
.cajon__panel { position: absolute; top: 0; right: 0; height: 100%; width: min(440px, 100%); background: var(--blanco); transform: translateX(100%); transition: transform .35s cubic-bezier(.2,.7,.2,1); display: flex; flex-direction: column; }
.cajon.abierto { pointer-events: auto; }
.cajon.abierto .cajon__fondo { opacity: 1; }
.cajon.abierto .cajon__panel { transform: none; }
.cajon__cab { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px 14px 24px; border-bottom: 1px solid var(--linea); }
.cajon__cuerpo { flex: 1; overflow-y: auto; padding: 8px 24px; }
.cajon__pie { padding: 20px 24px 24px; border-top: 1px solid var(--linea); background: var(--blanco); }
.linea-bolsa { display: grid; grid-template-columns: 88px 1fr auto; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--avena); align-items: start; }
.linea-bolsa .mini { background: var(--blanco); box-shadow: inset 0 0 0 1px rgba(0,0,0,.14); border-radius: 10px; aspect-ratio: 1; overflow: hidden; }
.linea-bolsa .mini img { mix-blend-mode: multiply; width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.linea-bolsa b { display: block; font-size: 14px; }
.linea-bolsa small { color: var(--hierro); font-size: 12px; display: block; }
.cant { display: inline-flex; align-items: center; border-radius: 9999px; box-shadow: inset 0 0 0 1px var(--niebla); margin-top: 10px; }
.cant button { width: 30px; height: 30px; font-size: 16px; }
.cant button:disabled { color: var(--niebla); cursor: default; }
.cant span { min-width: 20px; text-align: center; font-size: 13px; }
.quitar { font-size: 12px; color: var(--hierro); text-decoration: underline; margin-top: 8px; display: block; }
.total { display: flex; justify-content: space-between; font-weight: 700; margin-bottom: 4px; }
.nota { font-size: 12px; color: var(--hierro); margin: 0 0 16px; }

/* Pago */
.pago { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; padding: 40px 0 80px; }
.pago h1 { font-family: var(--serif); font-weight: 400; font-size: 40px; margin: 0 0 24px; }
.pago h3 { font: 700 13px/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; margin: 28px 0 14px; }
.campos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.campo { display: grid; gap: 6px; font-size: 13px; color: var(--hierro); }
.campo.ancho { grid-column: 1 / -1; }
.metodos { display: grid; gap: 10px; }
.metodo { display: flex; align-items: center; gap: 12px; padding: 16px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--niebla); cursor: pointer; font-size: 14px; }
.metodo:has(input:checked) { box-shadow: inset 0 0 0 1.5px var(--carbon); }
.metodo input { accent-color: var(--carbon); }
.metodo small { display: block; color: var(--hierro); }
.resumen { background: var(--avena); border-radius: var(--r-grande); padding: 32px; align-self: start; position: sticky; top: 92px; }
.resumen .linea-bolsa { grid-template-columns: 64px 1fr auto; border-color: var(--arena); }
.resumen .linea-bolsa .mini { background: var(--blanco); box-shadow: none; }
.fila { display: flex; justify-content: space-between; font-size: 14px; padding: 6px 0; }
.fila.total { font-size: 16px; padding-top: 14px; margin-top: 8px; border-top: 1px solid var(--arena); }

.confirmacion { text-align: center; padding: 96px 0; max-width: 560px; margin: 0 auto; }
.confirmacion h1 { font-family: var(--serif); font-weight: 400; font-size: 46px; margin: 12px 0; }
.confirmacion p { color: var(--hierro); }

/* Guía */
.guia { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 48px 0 80px; align-items: center; }
.guia h2 { font-family: var(--serif); font-weight: 400; font-size: 36px; margin: 0 0 16px; }
.guia p { color: var(--hierro); }
.guia svg.plano { width: 100%; height: auto; stroke: var(--carbon); }

/* Pie */
.pie { background: var(--avena); margin-top: 0; }
.pie__in { max-width: var(--max); margin: 0 auto; padding: 56px 24px 40px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 32px; }
.pie h4 { font: 500 14px/1 var(--sans); margin: 0 0 16px; color: var(--carbon); }
.pie a { display: block; font-size: 14px; color: var(--hierro); padding: 4px 0; }
.pie a:hover { color: var(--carbon); }
.pie p { font-size: 14px; color: var(--hierro); margin: 12px 0 0; max-width: 300px; }
.boletin { display: flex; gap: 8px; margin-top: 14px; }
.boletin .pill { padding: 12px 18px; }
.pie__legal { max-width: var(--max); margin: 0 auto; padding: 18px 24px 28px; font-size: 12px; color: var(--piedra); border-top: 1px solid var(--arena); }

.toast:not(.ver) { visibility: hidden; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 140%); background: var(--carbon); color: #fff; padding: 12px 22px; border-radius: 9999px; font-size: 14px; z-index: 60; transition: transform .35s cubic-bezier(.2,.7,.2,1); }
.toast.ver { transform: translate(-50%, 0); }

.aparecer { animation: aparecer .5s cubic-bezier(.2,.7,.2,1) both; }
@keyframes aparecer { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* Responsivo */
@media (max-width: 960px) {
  .heroe__in { grid-template-columns: 1fr; min-height: 0; padding-top: 40px; }
  .heroe__texto { padding-bottom: 0; }
  .marcas { grid-template-columns: repeat(2, 1fr); }
  .carrusel__pista { grid-auto-columns: calc((100% - 16px) / 2.3); }
  .dividido { grid-template-columns: 1fr; }
  .dividido__a, .dividido__b { min-height: 420px; }
  .dividido__a { min-height: 0; padding-top: 68%; }
  .dividido__a img { width: 70%; top: 2%; }
  .ventajas { grid-template-columns: 1fr; }
  .tienda { grid-template-columns: 1fr; gap: 16px; }
  .filtros { display: none; }
  .filtros.abiertos { display: block; }
  .btn-filtros { display: inline-flex; }
  .rejilla { grid-template-columns: repeat(2, 1fr); }
  .ficha { grid-template-columns: 1fr; gap: 32px; }
  .galeria { position: static; grid-template-columns: 1fr; }
  .miniaturas { flex-direction: row; order: 2; overflow-x: auto; }
  .miniaturas button { width: 64px; flex: none; }
  .pago { grid-template-columns: 1fr; }
  .resumen { position: static; }
  .guia { grid-template-columns: 1fr; }
  .pie__in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .envoltura { padding: 0 16px; }
  .nav__in { padding: 10px 16px; grid-template-columns: auto 1fr auto; }
  .nav__menu.icono { display: inline-grid; }
  .logo { justify-self: start; }
  .nav__links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--blanco); flex-direction: column; gap: 0; padding: 8px 16px 16px; border-bottom: 1px solid var(--linea); }
  .nav__links.abierto { display: flex; }
  .nav__links a { padding: 14px 0; border-bottom: 1px solid var(--avena); }
  .buscador { padding: 0 16px 12px; }
  .heroe__in { padding: 32px 16px 0; }
  .marcas { gap: 10px; }
  .marca-card .eti { top: 10px; left: 10px; padding: 6px 10px; font-size: 10px; }
  .marca-card .cuenta { left: 12px; bottom: 10px; font-size: 12px; }
  .rejilla { gap: 24px 10px; }
  .prod__info { flex-direction: column; gap: 2px; }
  .dividido__a { padding: 28px; }
  .dividido__a h3 { font-size: 34px; }
  .compra h1 { font-size: 34px; }
  .campos { grid-template-columns: 1fr; }
  .resumen { padding: 20px; }
  .pie__in { grid-template-columns: 1fr; padding: 40px 16px 24px; }
  .pie__legal { padding: 18px 16px 24px; }
}