/* ============================
   Single Product Page
   ============================ */
.single-product-page {
    padding-top: var(--space-6);
    padding-bottom: var(--space-12);
}

.single-product {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

/* Gallery */
.single-product__gallery {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--space-4);
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
    align-self: start;
}

.single-product__thumbs {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-height: 600px;
    overflow-y: auto;
}

.single-product__thumb {
    width: 72px;
    height: 72px;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    background: var(--color-bg-light);
    transition: border-color var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
}

.single-product__thumb.is-active {
    border-color: var(--color-primary);
}

.single-product__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.single-product__main-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--color-bg-light);
}

.single-product__main-image .swiper {
    width: 100%;
    height: 100%;
}

.single-product__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.single-product__no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Product Info */
.single-product__info {
    padding-top: var(--space-4);
}

.single-product__brand {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}

.single-product__title {
    font-size: var(--text-2xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-4);
}

.single-product__price {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    font-size: var(--text-xl);
}

.single-product__price del {
    color: var(--color-text-muted);
    font-size: var(--text-md);
}

.single-product__price ins {
    text-decoration: none;
    font-weight: var(--weight-bold);
    color: var(--color-sale);
}

.single-product__discount-badge {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    background: var(--color-sale);
    color: var(--color-bg);
}

.single-product__countdown {
    position: relative;
    background: var(--color-bg-dark);
    color: var(--color-bg);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

/* Variable product: WooCommerce variation form overrides */
.single-product__add-to-cart .variations {
    width: 100%;
    margin-bottom: var(--space-4);
}

.single-product__add-to-cart .variations td,
.single-product__add-to-cart .variations th {
    display: block;
    width: 100%;
    padding: 0;
}

.single-product__add-to-cart .variations th label {
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-2);
    display: block;
}

.single-product__add-to-cart .variations td {
    margin-bottom: var(--space-4);
}

.single-product__add-to-cart .variations select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    font-size: var(--text-base);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23333' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

/* Swatches-like size buttons (for attributes rendered as buttons) */
.single-product__add-to-cart .value .variable-items-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.single-product__add-to-cart .value .variable-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    height: 44px;
    padding: 0 var(--space-3);
    border: 1px solid var(--color-border);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.single-product__add-to-cart .value .variable-item:hover {
    border-color: var(--color-primary);
}

.single-product__add-to-cart .value .variable-item.selected {
    background: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
}

.single-product__add-to-cart .value .variable-item.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    text-decoration: line-through;
}

/* Quantity Row */
.single-product__qty-row {
    margin-bottom: var(--space-4);
}

.single-product__qty {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border);
}

.single-product__qty-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    transition: background var(--transition-fast);
}

.single-product__qty-btn:hover {
    background: var(--color-bg-light);
}

.single-product__qty-input {
    width: 50px;
    height: 44px;
    text-align: center;
    border: none;
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    -moz-appearance: textfield;
}

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

.single-product__add-btn {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-md);
}

.single-product__add-btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

.single-product__out-of-stock {
    padding: var(--space-4);
    background: var(--color-bg-light);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: var(--weight-medium);
}

/* Short Description & Meta */
.single-product__short-desc {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    font-size: var(--text-sm);
    color: var(--color-text-light);
    line-height: var(--leading-relaxed);
}

.single-product__meta {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.single-product__meta-row {
    display: flex;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-light);
}

.single-product__meta-label {
    font-weight: var(--weight-semibold);
    color: var(--color-text);
}

.single-product__meta-row a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.single-product__meta-row a:hover {
    color: var(--color-primary);
}

/* Tabs */
.single-product__tabs {
    margin-bottom: var(--space-12);
}

.single-product__tabs-nav {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.single-product__tab-btn {
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

.single-product__tab-btn:hover {
    color: var(--color-primary);
}

.single-product__tab-btn.is-active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.single-product__tab-panel {
    display: none;
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-light);
}

.single-product__tab-panel.is-active {
    display: block;
}

/* Responsive */
@media (max-width: 1023px) {
    .single-product {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    .single-product__gallery {
        position: static;
        grid-template-columns: 1fr;
    }
    .single-product__thumbs {
        flex-direction: row;
        max-height: none;
        overflow-x: auto;
        order: 1;
    }
    .single-product__thumb {
        width: 56px;
        height: 56px;
    }
}

@media (max-width: 767px) {
    .single-product__title {
        font-size: var(--text-xl);
    }
    .single-product__price {
        font-size: var(--text-lg);
    }
}