/* =============================================================
   SINGLE PRODUCT PAGE — assets/css/single-product-section.css
   Professional two-column layout: sticky gallery + details panel
   ALL colors/fonts use design tokens from style.css (:root)
   ============================================================= */

/* ── Breadcrumbs ─────────────────────────────────────────────── */
.shahab-sp-breadcrumbs {
    padding: var(--space-4) 0;
    background: var(--color-bg-cream);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.shahab-sp-breadcrumbs__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px 6px;
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.shahab-sp-breadcrumbs__item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.shahab-sp-breadcrumbs__item:not(:last-child)::after {
    content: '/';
    color: var(--color-text-light);
    font-size: 11px;
}

.shahab-sp-breadcrumbs__link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.shahab-sp-breadcrumbs__link:hover {
    color: var(--color-brand-dark);
}

.shahab-sp-breadcrumbs__item--current {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    max-width: 280px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Breadcrumb links inside WC generated category lists */
.shahab-sp-breadcrumbs__item a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.shahab-sp-breadcrumbs__item a:hover {
    color: var(--color-brand-dark);
}

/* ── Main Layout ─────────────────────────────────────────────── */
.shahab-sp-layout {
    background: var(--color-bg);
    padding: var(--space-10) 0 var(--space-20);
}

.shahab-sp-layout__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

/* ── Gallery (Left Column) ───────────────────────────────────── */
.shahab-sp-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    position: sticky;
    top: 100px;    /* height of header — adjust if header is different */
}

.shahab-sp-gallery__main-wrap {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #ffffff;
    border: 1px solid var(--color-border);
    cursor: zoom-in;
}

.shahab-sp-gallery__main-wrap--placeholder {
    cursor: default;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
}

.shahab-sp-gallery__main-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.5s ease, opacity 0.3s ease;
    display: block;
}

.shahab-sp-gallery__main-img:hover {
    transform: scale(1.04);
}

/* Fade transition when switching images */
.shahab-sp-gallery__main-img.is-fading {
    opacity: 0;
}

.shahab-sp-gallery__sale-badge {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: var(--z-raised);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--color-sale);
    color: var(--color-text-inverse);
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* Thumbnail strip */
.shahab-sp-gallery__thumbs {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.shahab-sp-gallery__thumb {
    flex: 0 0 calc(25% - 8px);
    aspect-ratio: 1;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    background: #ffffff;
    padding: 4px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.shahab-sp-gallery__thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.shahab-sp-gallery__thumb:hover {
    border-color: rgba(48, 87, 36, 0.45);
    transform: translateY(-2px);
}

.shahab-sp-gallery__thumb.is-active {
    border-color: var(--color-brand-dark);
    box-shadow: 0 0 0 3px rgba(48, 87, 36, 0.12);
}

/* ── Product Details (Right Column, sticky) ─────────────────── */
.shahab-sp-details {
    position: sticky;
    top: 100px;
    scrollbar-width: none;      /* Firefox */
    -ms-overflow-style: none;   /* IE/Edge */
    scroll-behavior: smooth;
    padding-right: 4px;
}

.shahab-sp-details::-webkit-scrollbar {
    display: none;              /* Chrome/Safari */
}

/* Category pill */
.shahab-sp-details__category {
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-brand);
    background: var(--color-primary-muted);
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin: 0 0 14px 0;
}

/* Product title */
.shahab-sp-details__title {
    font-family: var(--font-family-serif);
    font-size: clamp(24px, 2.5vw, 34px);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    line-height: 1.25;
    margin: 0 0 14px 0;
}

/* Rating row */
.shahab-sp-details__rating {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.shahab-sp-details__rating .star-rating {
    font-size: var(--font-size-base);
}

.shahab-sp-details__rating-count {
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* Price block */
.shahab-sp-details__price-wrap {
    margin-bottom: var(--space-5);
}

.shahab-sp-details__price {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.shahab-sp-details__price .price {
    font-family: var(--font-family-base);
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
}

.shahab-sp-details__price .price ins {
    text-decoration: none;
    color: var(--color-price-sale);
    font-weight: var(--font-weight-bold);
}

.shahab-sp-details__price .price del {
    font-size: 18px;
    color: var(--color-text);
    font-weight: var(--font-weight-regular);
}

/* Live qty-based total price */
.shahab-sp-details__qty-price {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-2);
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.shahab-sp-details__qty-price.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.shahab-sp-details__qty-price-label {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.shahab-sp-details__qty-price-value {
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    font-size: var(--font-size-base);
}

/* Short description */
.shahab-sp-details__desc {
    font-family: var(--font-family-base);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: 22px;
}

.shahab-sp-details__desc p {
    margin: 0 0 10px;
}

/* Divider */
.shahab-sp-details__divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.07);
    margin: 22px 0;
}

/* ── Quantity + Add to Cart Form ─────────────────────────────── */
.shahab-sp-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.shahab-sp-form__qty-row {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.shahab-sp-form__qty-label {
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    white-space: nowrap;
}

.shahab-sp-form__qty-box {
    display: flex;
    align-items: center;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg);
    transition: border-color var(--transition-fast);
}

.shahab-sp-form__qty-box:focus-within {
    border-color: var(--color-brand-dark);
    box-shadow: 0 0 0 3px rgba(48, 87, 36, 0.12);
}

.shahab-sp-form__qty-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    transition: background 0.15s ease, color 0.15s ease;
    flex-shrink: 0;
}

.shahab-sp-form__qty-btn svg {
    width: 18px;
    height: 18px;
    pointer-events: none;
}

.shahab-sp-form__qty-btn:hover {
    background: var(--color-brand-dark);
    color: var(--color-text-inverse);
}

.shahab-sp-form__qty-input {
    width: 54px;
    height: 44px;
    border: none;
    text-align: center;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    background: transparent;
    -moz-appearance: textfield;
    outline: none;
}

.shahab-sp-form__qty-input::-webkit-outer-spin-button,
.shahab-sp-form__qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Add to Cart button */
.shahab-sp-form__add-to-cart {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    width: 100%;
    min-height: 56px;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-brand-dark) 0%, var(--color-brand) 100%);
    color: var(--color-text-inverse);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.shahab-sp-form__add-to-cart::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.08);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.shahab-sp-form__add-to-cart:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(48, 87, 36, 0.35);
}

.shahab-sp-form__add-to-cart:hover::before {
    opacity: 1;
}

.shahab-sp-form__add-to-cart:active {
    transform: translateY(0);
    box-shadow: none;
}

.shahab-sp-form__add-to-cart.is-loading {
    pointer-events: none;
    opacity: 0.7;
}

.shahab-sp-form__cart-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.shahab-sp-form__add-label {
    flex: 1;
    text-align: left;
}

.shahab-sp-form__add-price {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    opacity: 0.9;
    padding-left: var(--space-3);
    border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.shahab-sp-form__add-price .price {
    color: var(--color-text-inverse);
    font-size: var(--font-size-sm);
}

.shahab-sp-form__add-price .price del,
.shahab-sp-form__add-price .price ins {
    text-decoration: none;
    color: var(--color-text-inverse);
}

/* Out of Stock */
.shahab-sp-details__out-of-stock {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family-base);
    font-size: 15px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-sale);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: rgba(48, 87, 36, 0.07);
    margin-bottom: var(--space-5);
}

.shahab-sp-details__out-of-stock svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ── Trust Badges ────────────────────────────────────────────── */
.shahab-sp-details__trust {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: 4px;
}

.shahab-sp-details__trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.shahab-sp-details__trust-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-brand-dark);
    flex-shrink: 0;
}

/* ── Product Meta ────────────────────────────────────────────── */
.shahab-sp-details__meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: 4px;
}

.shahab-sp-details__meta-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
}

.shahab-sp-details__meta-label {
    color: var(--color-text-light);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 11px;
    min-width: 70px;
}

.shahab-sp-details__meta-value {
    color: var(--color-text-muted);
}

/* ── Accordion ───────────────────────────────────────────────── */
.shahab-sp-accordion {
    border-top: 1px solid rgba(0, 0, 0, 0.07);
}

.shahab-sp-accordion__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-4) 0;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    transition: color var(--transition-fast);
}

.shahab-sp-accordion__trigger:hover {
    color: var(--color-brand-dark);
}

.shahab-sp-accordion__icon {
    width: 18px;
    height: 18px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.shahab-sp-accordion__trigger.is-open .shahab-sp-accordion__icon {
    transform: rotate(180deg);
}

.shahab-sp-accordion__body {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
}

.shahab-sp-accordion__body.is-open {
    max-height: 2000px;
}

.shahab-sp-accordion__content {
    padding: 18px 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-sm);
    line-height: 1.75;
    color: var(--color-text-muted);
}

.shahab-sp-accordion__content p {
    margin: 0 0 10px;
}

/* ── Related Products Section ───────────────────────────────── */
.shahab-sp-related {
    padding: 60px 0 80px;
    background: var(--color-bg-cream);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.shahab-sp-related__header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.shahab-sp-related__eyebrow {
    display: inline-block;
    padding: 5px 16px;
    border-radius: var(--radius-full);
    background: var(--color-primary-muted);
    color: var(--color-brand);
    font-family: var(--font-family-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
}

.shahab-sp-related__title {
    font-family: var(--font-family-serif);
    font-size: clamp(26px, 3vw, 36px);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-dark);
    margin: 0;
}

/* ── Responsive ──────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
    .shahab-sp-layout__inner {
        gap: 36px;
    }

    .shahab-sp-gallery {
        position: static;   /* disable sticky on tablet, let it flow */
    }

    .shahab-sp-details {
        position: static;
        max-height: none;
        overflow-y: visible;
    }
}

/* Mobile: single column */
@media (max-width: 768px) {
    .shahab-sp-layout__inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .shahab-sp-layout {
        padding: var(--space-6) 0 60px;
    }

    .shahab-sp-gallery {
        position: static;
    }

    .shahab-sp-gallery__main-wrap {
        aspect-ratio: 3 / 4;
        border-radius: var(--radius-md);
    }

    .shahab-sp-gallery__thumb {
        flex: 0 0 calc(25% - 7px);
    }

    .shahab-sp-details {
        position: static;
        max-height: none;
        overflow-y: visible;
    }

    .shahab-sp-details__title {
        font-size: var(--font-size-2xl);
    }

    .shahab-sp-details__price .price {
        font-size: 22px;
    }

    .shahab-sp-form__add-to-cart {
        min-height: 52px;
        font-size: 15px;
    }

    .shahab-sp-related {
        padding: var(--space-10) 0 60px;
    }
}

@media (max-width: 480px) {
    .shahab-sp-gallery__thumb {
        flex: 0 0 calc(33.33% - 7px);
    }

    .shahab-sp-details__trust {
        gap: var(--space-2);
    }

    .shahab-sp-form__qty-row {
        gap: var(--space-3);
    }
}