/* =======================================================
   1. КАРКАС КАТАЛОГА (Fluid Architecture)
   ======================================================= */

.page-catalog,
.main-content,
.catalog-section {
    background-color: var(--clr-white);
    color: var(--clr-dark);
}

.catalog-section {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    box-sizing: border-box;
}

.catalog-section .section-title {
    font-size: var(--text-title);
    font-weight: 800;
    color: var(--clr-dark);
    letter-spacing: -0.5px;
    margin-bottom: var(--space-md);
}

.catalog-layout-wrapper {
    display: grid;
    /* Адаптивная ширина сайдбара: 250px на ноутбуках, до 310px на 2K */
    grid-template-columns: clamp(250px, 18vw, 310px) 1fr;
    gap: var(--space-lg);
    width: 100%;
    margin-top: var(--space-sm);
    align-items: flex-start;
}

/* Левый сайдбар с фильтрами */
.catalog-sidebar {
    display: flex;
    flex-direction: column;
    position: sticky;
    top: var(--catalog-sticky-offset);
    z-index: var(--z-base);
    background: var(--clr-white);
    padding: var(--space-md);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
    box-sizing: border-box;
}

.filter-group {
    border-bottom: 1px solid var(--clr-border-subtle);
    padding-bottom: var(--space-sm);
}

.filter-group-title {
    font-family: var(--font-main);
    font-size: var(--text-md);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--clr-dark);
    margin-bottom: var(--space-sm);
}

/* =======================================================
   2. МЕНЮ КАТЕГОРИЙ И АККОРДЕОН
   ======================================================= */

.category-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--clr-bg-light);
    border-left: 3px solid transparent;
    cursor: pointer;
    user-select: none;
    transition: border-color 0.2s ease, padding-left 0.2s ease;
}

.menu-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    min-height: 26px;
}

.menu-title {
    font-size: var(--text-base);
    font-weight: 500;
    color: #4a4a52;
    display: inline-block;
    transition: transform 0.2s ease, color 0.2s ease;
}

.menu-item:hover .menu-title,
.menu-item-header:hover .menu-title {
    transform: translateX(4px);
    color: var(--accent-red);
}

.menu-arrow {
    position: relative;
    width: 14px;
    height: 14px;
    min-width: 14px;
    margin-left: 10px;
    flex-shrink: 0;
    display: block;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.menu-arrow::before {
    content: '';
    position: absolute;
    top: 50%; left: 0;
    width: 100%; height: 2px;
    background-color: var(--clr-dark);
    transform: translateY(-50%);
}

.menu-arrow::after {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    width: 2px; height: 100%;
    background-color: var(--clr-dark);
    transform: translateX(-50%);
}

.menu-item.expanded .menu-arrow {
    transform: rotate(45deg);
}

.subcategory-menu {
    display: flex;
    list-style: none;
    padding-left: 14px;
    margin-left: 4px;
    border-left: 2px solid var(--accent-red);
    flex-direction: column;
    gap: 8px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transition: max-height 0.35s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease, margin-top 0.3s ease;
}

.menu-item.expanded .subcategory-menu {
    max-height: 500px;
    opacity: 1;
    margin-top: 10px;
}

.subcategory-menu li {
    font-size: var(--text-sm);
    font-weight: 500;
    color: #66666e;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
}

.subcategory-menu li:hover,
.subcategory-menu li.active {
    color: var(--accent-red);
    font-weight: 700;
    transform: translateX(4px);
}

.menu-item.active {
    border-left-color: var(--accent-red);
    padding-left: 8px;
}

.menu-item.active > .menu-title,
.menu-item.active > .menu-item-header .menu-title {
    font-weight: 700;
    color: var(--accent-red);
}

/* =======================================================
   3. ВЕРХНЯЯ ПАНЕЛЬ ФИЛЬТРОВ И ТЕГОВ
   ======================================================= */

.sticky-catalog-header {
    position: sticky;
    top: var(--catalog-sticky-offset);
    z-index: var(--z-base);
    background: var(--clr-white);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
    margin-bottom: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.catalog-top-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.horizontal-filters-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-dropdown {
    position: relative;
}

.filter-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background-color: var(--clr-bg-light);
    border: 1px solid var(--clr-border-subtle);
    color: var(--clr-dark);
    font-family: var(--font-main);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-dropdown-btn.has-active-filters {
    background-color: var(--accent-red);
    color: var(--clr-white);
    border-color: var(--accent-red);
}

.filter-count-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--clr-white);
    color: var(--accent-red);
    font-size: 11px;
    font-weight: 800;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    margin-left: 4px;
}

.filter-dropdown-btn:hover,
.filter-dropdown.open .filter-dropdown-btn {
    background-color: var(--clr-white);
    color: var(--accent-red);
    border-color: var(--accent-red);
}

.dropdown-icon {
    font-size: 9px;
    transition: transform 0.2s ease;
}

.filter-dropdown.open .dropdown-icon {
    transform: rotate(180deg);
}

.filter-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: var(--z-dropdown);
    background-color: var(--clr-white);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 6px;
    box-shadow: var(--shadow-dropdown);
    padding: var(--space-sm);
    min-width: 210px;
    display: none;
    flex-direction: column;
    gap: 12px;
}

.filter-dropdown.open .filter-dropdown-menu {
    display: flex;
}

.filter-checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--text-sm);
    color: var(--clr-dark);
    cursor: pointer;
    user-select: none;
}

.filter-checkbox-label input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--accent-red);
    cursor: pointer;
}

.filter-price-inputs input {
    width: 100%;
    padding: 8px 12px;
    font-size: var(--text-sm);
    background: var(--clr-bg-light);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 4px;
    color: var(--clr-dark);
    outline: none;
    box-sizing: border-box;
}

.filter-price-inputs input:focus {
    border-color: var(--accent-red);
    background-color: var(--clr-white);
}

.catalog-sort-dropdown {
    border: 1px solid var(--clr-border-subtle);
    background: var(--clr-bg-light);
    color: var(--clr-dark);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: var(--text-xs);
    font-family: var(--font-main);
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease;
}

.catalog-sort-dropdown:hover,
.catalog-sort-dropdown:focus {
    border-color: var(--accent-red);
    background-color: var(--clr-white);
}

/* =======================================================
   4. ДИНАМИЧЕСКИЕ ТЕГИ
   ======================================================= */

.dynamic-parameters-panel {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.param-tag-btn {
    padding: 6px 12px;
    background-color: var(--clr-bg-light);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 4px;
    color: #4a4a52;
    font-size: var(--text-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.param-tag-btn:hover {
    background-color: var(--clr-white);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.param-tag-btn.active {
    background-color: var(--accent-red);
    color: var(--clr-white);
    border-color: var(--accent-red);
    font-weight: 700;
}

/* =======================================================
   5. СЕТКА ТОВАРОВ И КАРТОЧКА
   ======================================================= */

.products-grid-four-columns {
    display: grid;
    /* По умолчанию на ноутбуках 3 колонки */
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    width: 100%;
}

/* На мониторах от 1650px и 2K переключаем в 4 колонки */
@media (min-width: 1650px) {
    .products-grid-four-columns {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-lg);
    }
}

.product-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 8px;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    text-align: left;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    box-shadow: var(--shadow-soft);
    box-sizing: border-box;
    width: 100%;
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-red);
    box-shadow: var(--shadow-card-hover);
}

.product-card-image-box {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    height: auto;
    background-color: var(--clr-bg-card);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
    padding: var(--space-sm);
    box-sizing: border-box;
    overflow: hidden;
}

.product-card-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.product-card-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    width: 100%;
    flex-grow: 1;
    justify-content: space-between;
}

.product-sku {
    font-size: var(--text-xs);
    color: var(--clr-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.product-title {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--clr-dark);
    line-height: 1.35;
    margin-bottom: 8px;
    text-align: left;
    width: 100%;
}

.product-stock-tag {
    font-size: var(--text-sm);
    color: #66666e;
    margin-bottom: 8px;
}

.product-price {
    font-size: var(--text-md);
    font-weight: 800;
    color: var(--clr-dark);
    margin-bottom: 12px;
    width: 100%;
}

.btn-add-to-cart {
    width: 100%;
    padding: 12px;
    background-color: var(--clr-bg-light);
    color: var(--clr-dark);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 4px;
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: auto;
}

.btn-add-to-cart:hover {
    background-color: var(--clr-white);
    color: var(--accent-red);
    border-color: var(--accent-red);
    box-shadow: 0 4px 15px var(--accent-red-soft);
}

.quantity-selector-block {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 38px;
    border: 1px solid var(--accent-red);
    border-radius: 4px;
    background-color: var(--accent-red-soft);
    margin-top: auto;
}

.btn-qty-control {
    background: none;
    border: none;
    width: 36px;
    height: 100%;
    font-size: 16px;
    color: var(--clr-dark);
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-qty-control:hover {
    background-color: var(--accent-red);
    color: var(--clr-white);
}

.qty-count-input {
    width: 50px;
    height: 100%;
    border: none;
    background: transparent;
    text-align: center;
    font-size: var(--text-sm);
    font-weight: 700;
    font-family: inherit;
    color: var(--clr-dark);
    outline: none;
    -moz-appearance: textfield;
    padding: 0;
}

.qty-count-input::-webkit-outer-spin-button,
.qty-count-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.b2b-price-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    margin-bottom: 10px;
}

.product-old-price {
    position: relative;
    color: var(--clr-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    display: inline-block;
}

.product-old-price::after {
    content: "";
    position: absolute;
    left: -2px;
    top: 50%;
    width: calc(100% + 4px);
    height: 1.5px;
    background-color: var(--accent-red);
    transform: rotate(-10deg);
}

.product-new-price {
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--accent-red);
    letter-spacing: -0.3px;
}

.b2b-discount-badge {
    display: inline-block;
    background-color: var(--color-success-bg);
    border: 1px solid var(--color-success-border);
    color: var(--color-success);
    font-size: 10.5px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
}

.product-stock-tag.in-stock {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--color-success);
    font-size: 11px;
    font-weight: 600;
    margin: 4px 0 8px 0;
    line-height: 1.2;
}

.product-stock-tag.in-stock::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--color-success-border);
    border-radius: 50%;
}

.btn-reset-all-filters {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background-color: var(--clr-bg-light);
    border: 1px solid var(--clr-border-subtle);
    border-radius: 4px;
    font-family: var(--font-main);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--clr-dark);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-reset-all-filters:hover {
    background-color: var(--clr-white);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* =======================================================
   6. АДАПТИВНОСТЬ (ПЛАНШЕТЫ И СМАРТФОНЫ)
   ======================================================= */
@media (max-width: 1100px) {
    .catalog-layout-wrapper {
        grid-template-columns: 240px 1fr;
    }
    .products-grid-four-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 880px) {
    .catalog-layout-wrapper {
        grid-template-columns: 1fr;
    }

    .catalog-sidebar {
        position: static;
        width: 100%;
    }

    .sticky-catalog-header {
        position: relative;
        top: 0;
    }
}

@media (max-width: 580px) {
    .products-grid-four-columns {
        grid-template-columns: 1fr;
    }

    .product-card-image-box {
        height: 220px;
    }

    .catalog-top-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .catalog-sort-dropdown {
        width: 100%;
    }
}

/* =======================================================
   7. КНОПКА ИЗБРАННОГО НА КАРТОЧКЕ (ФЛАЖОК-ЗАКЛАДКА)
   ======================================================= */

.btn-wishlist-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 3;
    color: #111827;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
}

/* При наведении: легкое увеличение и подсвечивание контура */
.btn-wishlist-toggle:hover {
    background: #ffffff;
    border-color: rgba(221, 0, 0, 0.3);
    color: #DD0000;
    transform: scale(1.08);
    box-shadow: 0 4px 12px rgba(221, 0, 0, 0.15);
}

.btn-wishlist-toggle .wishlist-flag-svg {
    transition: fill 0.25s ease, stroke 0.25s ease, transform 0.25s ease;
    fill: transparent;
}

/* Активное состояние: белый круг с сочным красным флажком */
.btn-wishlist-toggle.active {
    background: #ffffff;
    border-color: #DD0000;
    color: #DD0000;
    box-shadow: 0 4px 14px rgba(221, 0, 0, 0.2);
}

.btn-wishlist-toggle.active .wishlist-flag-svg {
    fill: #DD0000;
    stroke: #DD0000;
}

/* Bounce / Pop микро-анимация щелчка при добавлении */
@keyframes flagPop {
    0% { transform: scale(1); }
    30% { transform: scale(1.35) rotate(-6deg); }
    60% { transform: scale(0.88) rotate(4deg); }
    100% { transform: scale(1) rotate(0); }
}

.btn-wishlist-toggle.animating {
    animation: flagPop 0.45s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}