/* ═══════════════════════════════════════════════════════════════
   TSC AGROINDUSTRIALES — catalog.css
   Grid del catálogo, sidebar de filtros, product cards
════════════════════════════════════════════════════════════════ */

/* ─── LAYOUT CATÁLOGO ─────────────────────────────────────────── */
.catalog-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-10);
    align-items: start;
    padding-top: var(--space-10);
    padding-bottom: var(--space-16);
}

/* ─── SIDEBAR DE FILTROS ──────────────────────────────────────── */
.filters-sidebar {
    position: sticky;
    top: calc(var(--navbar-h) + var(--space-6));
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    /* Scroll propio: la columna de filtros se desplaza independiente de la grilla */
    max-height: calc(100vh - var(--navbar-h) - var(--space-12));
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
}

.filters-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.filters-sidebar__title {
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-navy);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.filters-clear {
    font-size: var(--text-xs);
    color: var(--color-green);
    font-weight: var(--fw-semibold);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: color var(--transition);
    display: none; /* Se muestra con JS cuando hay filtros activos */
}
.filters-clear:hover { color: var(--color-green-hover); }
.filters-clear.visible { display: block; }

/* Grupos de filtro */
.filter-group {
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border);
}
.filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-group__title {
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

/* Checkboxes custom */
.filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    cursor: pointer;
    user-select: none;
}

.filter-option input[type="checkbox"] {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 1.5px solid var(--color-border);
    border-radius: 3px;
    background-color: var(--color-white);
    flex-shrink: 0;
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition);
    position: relative;
}

.filter-option input[type="checkbox"]:checked {
    background-color: var(--color-green);
    border-color: var(--color-green);
}

.filter-option input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: 2px solid white;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

.filter-option input[type="checkbox"]:focus-visible {
    outline: 3px solid rgba(93,160,50,0.4);
    outline-offset: 1px;
}

.filter-option__label {
    font-size: var(--text-sm);
    color: var(--color-gray);
    transition: color var(--transition);
    line-height: 1.4;
}

.filter-option:hover .filter-option__label {
    color: var(--color-navy);
}

.filter-option input[type="checkbox"]:checked + .filter-option__label {
    color: var(--color-navy);
    font-weight: var(--fw-medium);
}

/* Contador de resultados por opción */
.filter-option__count {
    margin-left: auto;
    font-size: var(--text-xs);
    color: var(--color-gray-light);
    background-color: var(--color-bg-light);
    padding: 1px 6px;
    border-radius: 10px;
}

/* ─── BARRA SUPERIOR DEL CATÁLOGO ────────────────────────────── */
.catalog-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.catalog-count {
    font-size: var(--text-sm);
    color: var(--color-gray);
}
.catalog-count strong {
    color: var(--color-navy);
    font-weight: var(--fw-semibold);
}

/* Tags de filtros activos */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.active-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background-color: var(--color-green-light);
    color: var(--color-green);
    border: 1px solid currentColor;
    border-radius: 20px;
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    padding: 3px 10px 3px 10px;
    cursor: pointer;
    transition: background-color var(--transition);
}
.active-filter-tag:hover {
    background-color: #d4edbe;
}
.active-filter-tag__remove {
    font-size: 14px;
    line-height: 1;
    opacity: 0.6;
}

/* ─── GRID DE PRODUCTOS ───────────────────────────────────────── */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    min-height: 300px;
}

/* ─── PRODUCT CARD ────────────────────────────────────────────── */
.product-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Estado oculto cuando el filtro no lo incluye */
.product-card[hidden] {
    display: none;
}

.product-card__img-link { display: block; color: inherit; text-decoration: none; }
.product-card__img-wrap {
    aspect-ratio: 16/9;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card__img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}
.product-card:hover .product-card__img-wrap img {
    transform: scale(1.04);
}

/* Placeholder si no hay imagen */
.product-card__img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, #e8edf3 100%);
    color: var(--color-border);
}

.product-card__body {
    padding: var(--space-5);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.product-card__top {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.product-card__title {
    font-size: var(--text-base);
    font-weight: var(--fw-semibold);
    color: var(--color-navy);
    line-height: 1.35;
}

.product-card__desc {
    font-size: var(--text-sm);
    color: var(--color-gray);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card__sectors {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.product-card__cta {
    display: block;
    text-align: center;
    padding: 0.625rem var(--space-4);
    background-color: transparent;
    color: var(--color-green);
    border: 1.5px solid var(--color-green);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition);
    margin-top: auto;
}
.product-card__cta:hover {
    background-color: var(--color-green);
    color: var(--color-white);
}

/* ─── ESTADO VACÍO DEL CATÁLOGO ───────────────────────────────── */
.catalog-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-16);
    display: none;
}
.catalog-empty.visible {
    display: block;
}

.catalog-empty__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    color: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.catalog-empty__title {
    font-size: var(--text-xl);
    font-weight: var(--fw-semibold);
    color: var(--color-navy);
    margin-bottom: var(--space-2);
}

.catalog-empty__text {
    font-size: var(--text-sm);
    color: var(--color-gray);
    margin-bottom: var(--space-6);
}

/* ─── FILTROS MOBILE (toggle button) ─────────────────────────── */
.filters-toggle-btn {
    display: none;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-navy);
    background-color: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.5rem 1rem;
    cursor: pointer;
    margin-bottom: var(--space-4);
    transition: border-color var(--transition);
}
.filters-toggle-btn:hover { border-color: var(--color-green); }

.filters-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--color-green);
    color: white;
    font-size: 10px;
    font-weight: var(--fw-bold);
    display: none;
}
.filters-badge.visible { display: inline-flex; }

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1023px) {
    .catalog-layout {
        grid-template-columns: 1fr;
    }

    .filters-sidebar {
        position: static;
        max-height: none;
        overflow-y: visible;
        display: none;
    }
    .filters-sidebar.mobile-open {
        display: block;
    }

    .filters-toggle-btn {
        display: flex;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .products-grid {
        grid-template-columns: 1fr;
    }

    .catalog-topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
}