aside {
    flex: 0 0 250px;
}

.catalog-container {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 28px;
    margin-bottom: 80px;
}

.a-section {
    margin-bottom: 24px;
}

.a-section h2 {
    font-weight: 400;
    font-size: 26px;
    line-height: 1.2;
    color: #36213e;
    margin-bottom: 14px;
}

.categories {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.category {
    display: block;
    padding: 6px 0;
    color: #554971;
    font-size: 18px;
    line-height: 1.25;
    transition: color 0.2s, text-decoration-color 0.2s;
}

.category:hover,
.category.active {
    color: #36213e;
    text-decoration: underline;
}

.categories-empty,
.item-list-empty {
    color: #554971;
    font-size: 18px;
    line-height: 1.4;
}

.catalog-filter-form {
    display: flex;
    flex-direction: column;
}

.catalog-price-slider {
    display: grid;
    gap: 14px;
}

.catalog-price-slider__values {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: #554971;
    font-size: 16px;
    line-height: 1.2;
}

.catalog-price-slider__controls {
    position: relative;
    height: 32px;
}

.catalog-price-slider__track {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 4px;
    transform: translateY(-50%);
    background: rgba(99, 118, 141, 0.18);
}

.catalog-price-slider__track-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    background: #63768d;
}

.catalog-price-slider__range {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 32px;
    margin: 0;
    pointer-events: none;
    appearance: none;
    background: transparent;
}

.catalog-price-slider__range::-webkit-slider-thumb {
    width: 18px;
    height: 18px;
    border: 2px solid #63768d;
    border-radius: 50%;
    background: #ffffff;
    appearance: none;
    pointer-events: auto;
    cursor: pointer;
    box-shadow: 0 0 0 3px rgba(99, 118, 141, 0.08);
}

.catalog-price-slider__range::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border: 2px solid #63768d;
    border-radius: 50%;
    background: #ffffff;
    pointer-events: auto;
    cursor: pointer;
    box-shadow: 0 0 0 3px rgba(99, 118, 141, 0.08);
}

.catalog-price-slider__range::-webkit-slider-runnable-track {
    height: 4px;
    background: transparent;
}

.catalog-price-slider__range::-moz-range-track {
    height: 4px;
    background: transparent;
}

.catalog-price-slider__range:focus-visible {
    outline: none;
}

.catalog-filter-submit {
    min-height: 42px;
    margin-top: 16px;
    border: 1px solid #63768d;
    background: #63768d;
    color: #ffffff;
    font-family: 'Noah', sans-serif;
    font-size: 15px;
    line-height: 1;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.catalog-filter-submit:hover {
    background: #554971;
    border-color: #554971;
}

.item-list {
    flex: 1 1 auto;
    min-width: 0;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
}

.item-card {
    min-width: 0;
    border: 1px solid rgba(54, 33, 62, 0.14);
    background: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.item-card:hover {
    border-color: rgba(54, 33, 62, 0.3);
    box-shadow: 0 18px 36px rgba(54, 33, 62, 0.1);
    transform: translateY(-2px);
}

.item-card-media-link {
    display: block;
}

.item-card-image {
    aspect-ratio: 4 / 3;
    background: rgba(99, 118, 141, 0.1);
    overflow: hidden;
}

.item-card-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.item-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #63768d;
    font-size: 18px;
}

.item-card-body {
    padding: 18px;
}

.item-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
}

.item-card-category {
    color: #63768d;
    font-size: 15px;
    line-height: 1.2;
    margin-bottom: 8px;
    min-width: 0;
}

.item-card-favorite-form {
    flex: 0 0 auto;
}

.item-card-favorite-button {
    width: 16px;
    height: 16px;
    border: 0;
    background: transparent;
    padding: 0;
    color: #63768d;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.2s, opacity 0.2s, transform 0.2s;
}

.item-card-favorite-button:hover {
    color: #36213e;
    opacity: 0.82;
    transform: translateY(-1px);
}

.item-card-favorite-button svg {
    width: 18px;
    height: 18px;
}

.item-card-favorite-button.is-active {
    color: #c54c5d;
}

.item-card-favorite-button--login {
    text-decoration: none;
}

.item-card-title-link {
    display: block;
}

.item-card-title {
    color: #36213e;
    font-weight: 400;
    font-size: 24px;
    line-height: 1.2;
    display: -webkit-box;
    min-height: 58px;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.item-card-description {
    margin-top: 10px;
    color: #554971;
    font-size: 16px;
    line-height: 1.35;
}

.item-card-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 12px;
    margin-top: 18px;
}

.item-card-price-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.item-card-price {
    color: #36213e;
    font-weight: 700;
    font-size: 22px;
    line-height: 1.2;
}

.item-card-price--discount {
    color: #c54c5d;
}

.item-card-price-original {
    color: #8a8a9a;
    font-size: 15px;
    font-weight: 400;
    text-decoration: line-through;
    line-height: 1.2;
}

.item-card-availability {
    flex: 0 0 auto;
    color: #554971;
    font-size: 15px;
    line-height: 1.2;
}

.item-card-availability.available {
    color: #4f7d4f;
}

.item-card-availability.unavailable {
    color: #a14b4b;
}

.product-detail {
    display: grid;
    grid-template-columns: minmax(300px, 420px) minmax(320px, 1fr);
    gap: 78px;
    align-items: start;
    margin-top: 44px;
    margin-bottom: 88px;
}

.product-gallery {
    min-width: 0;
}

.product-gallery__main {
    width: 100%;
    aspect-ratio: 1 / 0.96;
    background: rgba(99, 118, 141, 0.1);
    overflow: hidden;
}

.product-gallery__main a,
.product-gallery__main img {
    display: block;
    width: 100%;
    height: 100%;
}

.product-gallery__main img {
    object-fit: cover;
}

.product-gallery__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #63768d;
    font-size: 20px;
}

.product-gallery__thumbs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    margin-top: 16px;
}

.product-gallery__thumb {
    display: block;
    aspect-ratio: 1.2 / 1;
    background: rgba(99, 118, 141, 0.08);
    border: 1px solid transparent;
    overflow: hidden;
    transition: border-color 0.2s, opacity 0.2s;
}

.product-gallery__thumb:hover,
.product-gallery__thumb.active {
    border-color: rgba(54, 33, 62, 0.35);
}

.product-gallery__thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-summary {
    min-width: 0;
    padding-top: 4px;
}

.product-summary__category {
    color: #63768d;
    font-size: 16px;
    line-height: 1.2;
    margin-bottom: 10px;
}

.product-summary__title {
    max-width: 650px;
    color: #36213e;
    font-weight: 400;
    font-size: 42px;
    line-height: 1.08;
}

.product-summary__meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 16px;
}

.product-summary__price-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.product-summary__price {
    color: #36213e;
    font-weight: 700;
    font-size: 28px;
    line-height: 1.2;
}

.product-summary__price--discount {
    color: #c54c5d;
}

.product-summary__price-original {
    color: #8a8a9a;
    font-size: 18px;
    font-weight: 400;
    text-decoration: line-through;
    line-height: 1.2;
}

.product-summary__color-name {
    font-size: 16px;
    color: #554971;
}

.product-summary__availability {
    color: #554971;
    font-size: 17px;
    line-height: 1.2;
}

.product-summary__availability.available {
    color: #4f7d4f;
}

.product-summary__availability.unavailable {
    color: #a14b4b;
}

.product-summary__swatches {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
}

.product-summary__swatch {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: block;
    border: 2px solid rgba(54, 33, 62, 0.18);
    cursor: pointer;
    transition: box-shadow 0.15s, border-color 0.15s;
}

.product-summary__swatch--active {
    box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px #554971;
    border-color: #554971;
}

.product-summary__description {
    max-width: 560px;
    margin-top: 28px;
    color: #36213e;
    font-size: 18px;
    line-height: 1.22;
}

.product-summary__actions {
    display: grid;
    grid-template-columns: minmax(160px, 245px) minmax(160px, 245px);
    gap: 34px;
    margin-top: 88px;
}

.product-summary__cart-form {
    display: contents;
}

.product-summary__button {
    min-height: 38px;
    border: 1px solid #63768d;
    font-family: 'Noah', sans-serif;
    font-size: 18px;
    line-height: 1;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.product-summary__button--link {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-summary__button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.product-summary__button--primary {
    background: #63768d;
    color: #ffffff;
}

.product-summary__button--primary:hover {
    background: #554971;
    border-color: #554971;
}

.product-summary__button--secondary {
    background: #ffffff;
    color: #63768d;
}

.product-summary__button--secondary:hover {
    border-color: #554971;
    color: #36213e;
}

@media (max-width: 900px) {
    .catalog-container {
        flex-direction: column;
        padding-left: 24px;
        padding-right: 24px;
    }

    aside,
    .item-list {
        width: 100%;
        flex-basis: auto;
    }

    .product-detail {
        grid-template-columns: 1fr;
        gap: 36px;
        padding-left: 24px;
        padding-right: 24px;
        margin-top: 28px;
        margin-bottom: 64px;
    }

    .product-summary__title {
        font-size: 34px;
    }

    .product-summary__actions {
        margin-top: 42px;
    }
}

@media (max-width: 520px) {
    .items-grid {
        grid-template-columns: 1fr;
    }

    .item-card-footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .item-card-header {
        gap: 10px;
    }

.item-card-favorite-button {
        width: 38px;
        height: 38px;
    }

    .product-gallery__thumbs {
        gap: 12px;
    }

    .product-summary__title {
        font-size: 30px;
    }

    .product-summary__swatch {
        width: 40px;
        height: 40px;
    }

    .product-summary__description {
        font-size: 17px;
    }

    .product-summary__actions {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .product-summary__button {
        min-height: 44px;
        width: 100%;
    }
}

/* Sidebar section links (Акции / Новинки headings) */
.sidebar-section-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.sidebar-section-link:hover,
.sidebar-section-link.active {
    color: #36213e;
    text-decoration: underline;
}

/* Sidebar mini-cards */
.sidebar-mini-card {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-bottom: 12px;
}

.sidebar-mini-card__img-link {
    flex: 0 0 52px;
    width: 52px;
    height: 52px;
    display: block;
    overflow: hidden;
    background: rgba(99, 118, 141, 0.1);
    border-radius: 4px;
}

.sidebar-mini-card__img-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.sidebar-mini-card__body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-mini-card__name {
    color: #36213e;
    font-size: 15px;
    line-height: 1.2;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-decoration: none;
    transition: text-decoration-color 0.2s;
}

.sidebar-mini-card__name:hover {
    text-decoration: underline;
}

.sidebar-mini-card__price {
    color: #554971;
    font-size: 14px;
    font-weight: 600;
}

.sidebar-more-link {
    display: inline-block;
    margin-top: 4px;
    color: #63768d;
    font-size: 15px;
    text-decoration: underline;
    transition: color 0.2s;
}

.sidebar-more-link:hover {
    color: #36213e;
}