/* =========================================================
   Banner cruzado · Plata Santander en Oro Santander
   Solo portada y final del catálogo. Identidad de Plata Santander:
   burdeos y rosa pastel. Modo oscuro con los mismos selectores que glass.css.
   ========================================================= */

.os-bc {
  --bc-bg:     #F5E3E5;
  --bc-ink:    #2B0F17;
  --bc-ink-2:  #4D2A33;
  --bc-accent: #6D1A2E;
  --bc-btn-ink:#FFFFFF;
  --bc-btn-hover: #8F3A4E;
  --bc-line:   #E2BAC0;
  --bc-photo:  #FFFFFF;
}

:root[data-theme="dark"] .os-bc {
  --bc-bg:     #2B0F17;
  --bc-ink:    #F5E3E5;
  --bc-ink-2:  #EDCFD3;
  --bc-accent: #E2BAC0;
  --bc-btn-ink:#2B0F17;
  --bc-btn-hover: #FFFFFF;
  --bc-line:   rgba(226, 186, 192, 0.35);
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] .os-bc {
    --bc-bg:     #2B0F17;
    --bc-ink:    #F5E3E5;
    --bc-ink-2:  #EDCFD3;
    --bc-accent: #E2BAC0;
    --bc-btn-ink:#2B0F17;
    --bc-btn-hover: #FFFFFF;
    --bc-line:   rgba(226, 186, 192, 0.35);
  }
}

.os-bc--portada { padding-block: clamp(2.5rem, 6vw, 5rem); }
.os-bc--catalogo { margin-top: clamp(2.5rem, 6vw, 4.5rem); }

.os-bc__card {
  display: grid;
  grid-template-columns: minmax(0, 14rem) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: center;
  max-width: 62rem;
  margin-inline: auto;
  padding: clamp(1rem, 2.5vw, 1.75rem);
  background: var(--bc-bg);
  color: var(--bc-ink);
  border: 1px solid var(--bc-line);
  border-radius: 6px;
}

.os-bc__media {
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--bc-photo);
  border-radius: 4px;
  overflow: hidden;
}
.os-bc__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.os-bc__body { min-width: 0; }

.os-bc__eyebrow {
  margin: 0 0 0.5rem;
  font-family: var(--ps-sans);
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bc-accent);
}

.os-bc__title {
  margin: 0 0 0.75rem;
  font-family: var(--ps-serif);
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.005em;
  color: var(--bc-ink);
  text-wrap: balance;
}

.os-bc__text {
  margin: 0 0 1.25rem;
  max-width: 34rem;
  font-size: var(--t-base);
  line-height: 1.55;
  color: var(--bc-ink-2);
}

.os-bc__cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--bc-accent);
  color: var(--bc-btn-ink);
  border-radius: 999px;
  font-family: var(--ps-sans);
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background-color 0.2s ease;
}
.os-bc__cta:hover,
.os-bc__cta:focus-visible { background: var(--bc-btn-hover); color: var(--bc-btn-ink); }
.os-bc__cta:focus-visible { outline: 2px solid var(--bc-accent); outline-offset: 3px; }

/* ── Móvil: apilado ─────────────────────────────────────── */
@media (max-width: 640px) {
  .os-bc__card {
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
  }
  .os-bc__media { aspect-ratio: 16 / 10; }
  .os-bc__cta { display: block; text-align: center; }
}

/* ── Carrusel de novedades ──────────────────────────────────
   Se pinta cuando hay lista guardada; si no, vale la tarjeta de arriba.
   Escritorio ~3,5 piezas, móvil ~1,6, para que se intuya el deslizamiento. */
.os-bc--carrusel .os-bc__card {
  grid-template-columns: minmax(0, 17rem) minmax(0, 1fr);
  max-width: 76rem;
}

.os-bc__carrusel { position: relative; min-width: 0; }

.os-bc__lista {
  --bc-n: 3.5;
  --bc-gap: 0.75rem;
  display: flex;
  gap: var(--bc-gap);
  margin: 0;
  padding: 0 0 0.75rem;
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--bc-line) transparent;
}
.os-bc__lista:focus-visible { outline: 2px solid var(--bc-accent); outline-offset: 4px; }

.os-bc__item {
  flex: 0 0 calc((100% - (var(--bc-n) - 1) * var(--bc-gap)) / var(--bc-n));
  min-width: 0;
  scroll-snap-align: start;
}

.os-bc__pieza {
  display: block;
  color: var(--bc-ink);
  text-decoration: none;
}
.os-bc__foto {
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--bc-photo);
  border-radius: 4px;
  overflow: hidden;
}
.os-bc__foto img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.os-bc__nombre {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  min-height: 2.7em;
  margin-top: 0.625rem;
  font-size: var(--t-sm);
  line-height: 1.35;
  color: var(--bc-ink);
}
.os-bc__precio {
  display: block;
  margin-top: 0.25rem;
  font-size: var(--t-sm);
  font-weight: 600;
  color: var(--bc-accent);
}
.os-bc__pieza:hover .os-bc__nombre { text-decoration: underline; text-underline-offset: 3px; }
.os-bc__pieza:focus-visible { outline: 2px solid var(--bc-accent); outline-offset: 4px; border-radius: 4px; }

/* Flechas: las crea el JS y solo se ven en escritorio. */
.os-bc__flecha { display: none; }

@media (max-width: 1099px) {
  .os-bc__lista { --bc-n: 2.6; }
}
@media (max-width: 859px) {
  .os-bc--carrusel .os-bc__card { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
}
@media (max-width: 559px) {
  .os-bc__lista { --bc-n: 1.6; }
}
@media (min-width: 860px) {
  .os-bc__flecha {
    position: absolute;
    top: 32%;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    background: var(--bc-accent);
    color: var(--bc-btn-ink);
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.2s ease, opacity 0.2s ease;
  }
  .os-bc__flecha::before {
    content: "";
    width: 0.6rem;
    height: 0.6rem;
    border: solid currentColor;
    border-width: 0 2px 2px 0;
  }
  .os-bc__flecha--prev { left: -1rem; }
  .os-bc__flecha--prev::before { transform: translateX(2px) rotate(135deg); }
  .os-bc__flecha--next { right: -1rem; }
  .os-bc__flecha--next::before { transform: translateX(-2px) rotate(-45deg); }
  .os-bc__flecha:hover:not(:disabled),
  .os-bc__flecha:focus-visible { background: var(--bc-btn-hover); }
  .os-bc__flecha:focus-visible { outline: 2px solid var(--bc-accent); outline-offset: 3px; }
  .os-bc__flecha:disabled { opacity: 0.35; cursor: default; }
}
@media (min-width: 1100px) {
  .os-bc__lista { --bc-n: 3.5; }
}