.catalog-section { padding: 28px 0 48px; }

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 8px;
}

.product-card {
    background: var(--beige);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.product-card-img {
    width: 100%;
    aspect-ratio: 4 / 4.5;
    object-fit: cover;
    display: block;
}

.product-card-body {
    padding: 14px 16px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-card-name {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-main);
    line-height: 1.45;
    flex: 1;
    margin-bottom: 12px;
}

.product-card-divider {
    height: 1.5px;
    background: var(--blue-dark);
    opacity: 0.2;
    margin-bottom: 12px;
}

.product-card-price {
    font-size: 18px;
    font-weight: 600;
    color: var(--blue-dark);
    margin-bottom: 12px;
}

.price-old {
    display: block;
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-bottom: 2px;
}

.btn-buy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--blue-mid);
    color: var(--white);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    width: fit-content;
    border: none;
    cursor: pointer;
    font-family: var(--font-main);
    transition: background var(--transition), transform var(--transition);
}

.btn-buy:hover { background: var(--blue-dark); transform: translateY(-1px); opacity: 1; }

.product-detail {
    display: grid;
    grid-template-columns: 120px 380px 1fr;
    gap: 28px;
    padding: 40px 0 60px;
    align-items: start;
}

.product-thumbnails {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.product-thumb {
    width: 120px;
    height: 90px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color var(--transition);
}

.product-thumb.active,
.product-thumb:hover { border-color: var(--blue-mid); }

.product-main-img {
    width: 380px;
    height: 480px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    display: block;
}

.product-info { padding-top: 4px; }

.product-info-title {
    font-size: 26px;
    font-weight: 400;
    color: var(--blue-dark);
    line-height: 1.3;
    margin-bottom: 32px;
}

.product-price-box {
    background: var(--beige);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.product-price-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: lowercase;
}

.product-price-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--blue-dark);
}

.btn-buy-detail {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--red);
    color: var(--white);
    padding: 16px 40px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: lowercase;
    border: none;
    cursor: pointer;
    font-family: var(--font-main);
    white-space: nowrap;
    transition: background var(--transition), transform var(--transition);
}

.btn-buy-detail:hover { background: #e03a40; transform: translateY(-1px); }

@media (max-width: 1100px) {
    .catalog-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
    .catalog-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .product-detail { grid-template-columns: 80px 1fr; grid-template-rows: auto auto; gap: 16px; }
    .product-thumbnails { grid-column: 1; grid-row: 1 / 3; flex-direction: column; }
    .product-main-img { grid-column: 2; grid-row: 1; }
    .product-info { grid-column: 1 / 3; grid-row: 2; }
}

@media (max-width: 540px) {
    .catalog-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .product-card-name { font-size: 13px; }
    .product-detail { grid-template-columns: 1fr; }
    .product-thumbnails { flex-direction: row; grid-column: 1; grid-row: 2; }
    .product-main-img { grid-column: 1; grid-row: 1; width: 100%; }
    .product-info { grid-column: 1; grid-row: 3; }
}