/* ==========================================================================
   Fenix Relacionados — carruseles «Productos similares» y
   «También te puede interesar» en la ficha de producto (v9.30.0).

   Tokens propios en la raíz de la sección. Dark por defecto; claro con
   [data-color-mode="light"] en cualquier ancestro o con prefers-color-scheme
   (solo si nadie forzó dark). Solo transform/opacity animan.
   ========================================================================== */

.fx-rel {
    --fx-bg: var(--hik-bg, #000);
    --fx-surface: var(--hik-bg-card, #111);
    --fx-surface-2: rgba(255, 255, 255, 0.04);
    --fx-text: var(--hik-text, #fff);
    --fx-muted: var(--hik-text-muted, rgba(255, 255, 255, 0.6));
    --fx-border: var(--hik-border, rgba(255, 255, 255, 0.1));
    --fx-primary: var(--hik-primary, #E31937);
    --fx-media-bg: #fff;
    --fx-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
    --fx-card-w: clamp(180px, 22vw, 232px);
    --fx-gap: 14px;
    --fx-ease: cubic-bezier(0.16, 1, 0.3, 1);

    padding: clamp(20px, 3vw, 36px) 0;
    border-top: 1px solid var(--fx-border);
    background: var(--fx-bg);
    color: var(--fx-text);
}

@media (prefers-color-scheme: light) {
    .fx-rel:not([data-color-mode="dark"] .fx-rel) {
        --fx-surface-2: rgba(0, 0, 0, 0.035);
        --fx-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
    }
}
[data-color-mode="light"] .fx-rel {
    --fx-surface-2: rgba(0, 0, 0, 0.035);
    --fx-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}
[data-color-mode="dark"] .fx-rel {
    --fx-surface-2: rgba(255, 255, 255, 0.04);
    --fx-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.fx-rel--cross {
    background: linear-gradient(180deg, var(--fx-surface-2), transparent 60%);
}

/* ---- Cabecera ---------------------------------------------------------- */
.fx-rel__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
}
.fx-rel__title {
    margin: 0;
    font-size: clamp(17px, 1.1rem + 0.4vw, 22px);
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--fx-text);
    position: relative;
    padding-left: 14px;
}
.fx-rel__title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.2em;
    bottom: 0.2em;
    width: 4px;
    border-radius: 2px;
    background: var(--fx-primary);
}
.fx-rel__titulos { min-width: 0; }
/* Subtítulo opcional (v9.42.0, ficha «Vitrina»). */
.fx-rel__sub {
    margin: 4px 0 0;
    padding-left: 14px;
    font-size: 14px;
    color: var(--fx-muted);
}
.fx-rel--cross .fx-rel__title::before {
    background: linear-gradient(180deg, var(--fx-primary), #ff7a45);
}

.fx-rel__nav {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}
.fx-rel__btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--fx-border);
    background: var(--fx-surface);
    color: var(--fx-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.25s var(--fx-ease), opacity 0.2s, background 0.2s, border-color 0.2s;
}
.fx-rel__btn:hover:not(:disabled) {
    background: var(--fx-primary);
    border-color: var(--fx-primary);
    color: #fff;
    transform: translateY(-1px);
}
.fx-rel__btn:focus-visible {
    outline: 2px solid var(--fx-primary);
    outline-offset: 2px;
}
.fx-rel__btn:disabled {
    opacity: 0.35;
    cursor: default;
}

/* ---- Pista ------------------------------------------------------------- */
.fx-rel__viewport {
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 2px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px 2px 10px;
    margin: -4px -2px 0;
    overscroll-behavior-x: contain;
}
.fx-rel__viewport::-webkit-scrollbar {
    display: none;
}
.fx-rel__viewport:focus-visible {
    outline: 2px solid var(--fx-primary);
    outline-offset: 4px;
    border-radius: 6px;
}
.fx-rel__track {
    display: flex;
    gap: var(--fx-gap);
    list-style: none;
    margin: 0;
    padding: 0;
    width: max-content;
}
.fx-rel__item {
    flex: 0 0 var(--fx-card-w);
    width: var(--fx-card-w);
    scroll-snap-align: start;
}

/* ---- Tarjeta ----------------------------------------------------------- */
.fx-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--fx-surface);
    border: 1px solid var(--fx-border);
    border-radius: 14px;
    overflow: hidden;
    transition: transform 0.35s var(--fx-ease), box-shadow 0.35s var(--fx-ease), border-color 0.2s;
}
.fx-card:hover,
.fx-card:focus-within {
    transform: translateY(-4px);
    box-shadow: var(--fx-shadow);
    border-color: rgba(227, 25, 55, 0.45);
}

.fx-card__media {
    position: relative;
    display: block;
    aspect-ratio: 1 / 1;
    background: var(--fx-media-bg);
    padding: 12px;
}
.fx-card__media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.45s var(--fx-ease);
}
.fx-card:hover .fx-card__media img {
    transform: scale(1.04);
}
.fx-card__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
}
.fx-card__badge {
    position: absolute;
    left: 10px;
    bottom: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #111;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}
.fx-card__badge i {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--badge-color, #6b7280);
}
.fx-card__hot {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--fx-primary);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    padding: 3px 8px;
    border-radius: 6px;
}

.fx-card__body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px 14px;
    flex: 1;
}
.fx-card__marca {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fx-primary);
}
.fx-card__modelo {
    font-size: 12px;
    font-weight: 600;
    color: var(--fx-muted);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.fx-card__title {
    margin: 2px 0 0;
    font-size: 14px;
    line-height: 1.3;
    font-weight: 600;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: calc(1.3em * 2);
}
.fx-card__title a {
    color: var(--fx-text);
    text-decoration: none;
}
.fx-card__title a:hover {
    color: var(--fx-primary);
}

.fx-card__price {
    margin-top: auto;
    padding-top: 8px;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 6px;
    min-height: 26px;
}
.fx-card__now {
    font-size: 16px;
    font-weight: 800;
    color: var(--fx-text);
}
.fx-card__was {
    font-size: 12px;
    color: var(--fx-muted);
}
.fx-card__off {
    font-size: 11px;
    font-weight: 800;
    color: #fff;
    background: #16a34a;
    padding: 1px 6px;
    border-radius: 5px;
}
.fx-card__iva {
    font-size: 11px;
    color: var(--fx-muted);
}
.fx-card__login {
    font-size: 12px;
    color: var(--fx-primary);
    text-decoration: none;
    border-bottom: 1px dashed currentColor;
}

.fx-card__actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}
.fx-card__link,
.fx-card__add {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    padding: 0 10px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s var(--fx-ease), background 0.2s, color 0.2s, border-color 0.2s;
}
.fx-card__link {
    color: var(--fx-text);
    border: 1px solid var(--fx-border);
    background: transparent;
}
.fx-card__link:hover {
    border-color: var(--fx-text);
}
.fx-card__add {
    color: #fff;
    background: var(--fx-primary);
    border: 1px solid var(--fx-primary);
}
.fx-card__add:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}
.fx-card__add.in-cart {
    background: #16a34a;
    border-color: #16a34a;
}
.fx-card__link:focus-visible,
.fx-card__add:focus-visible {
    outline: 2px solid var(--fx-primary);
    outline-offset: 2px;
}

/* ---- Responsive -------------------------------------------------------- */
@media (max-width: 767px) {
    .fx-rel {
        --fx-card-w: 62vw;
        --fx-gap: 12px;
    }
    .fx-rel__nav {
        display: none;
    }
    .fx-rel__viewport {
        scroll-snap-type: x proximity;
    }
}
@media (min-width: 1440px) {
    .fx-rel {
        --fx-card-w: 236px;
    }
}

/* ---- Movimiento reducido ---------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .fx-card,
    .fx-card__media img,
    .fx-rel__btn,
    .fx-card__add,
    .fx-card__link {
        transition: none;
    }
    .fx-card:hover,
    .fx-card:hover .fx-card__media img {
        transform: none;
    }
}