/*
 * IPC Base Theme — Products Stylesheet
 * ============================================================
 * Author:  Jason Ackerman <jason@overtimeagency.com>
 * Agency:  Overtime Agency (https://overtimeagency.com)
 *
 * Loaded only on product-related pages via inc/enqueue.php.
 * All colors/sizes reference CSS variables from base.css so
 * child themes can override without touching this file.
 *
 * Structure:
 *   1.  Product Category Grid (flip-cards + horizontal scroll)
 *   2.  Scroll Arrows
 *   3.  Category Archive — Product List
 *   4.  Product Detail — Layout
 *   5.  Product Detail — Header (title, image, CTAs)
 *   6.  Product Detail — Variation Nav (flavor list)
 *   7.  Product Detail — Variation Panels
 *   8.  Product Detail — Nutrition Facts
 *   9.  Product Detail — Certifications
 *   10. Product Detail — Ingredients
 *   11. Back-to-top Anchor
 *   12. Responsive
 * ============================================================ */


/* ============================================================
   1. Product Category Grid
   Horizontal scrolling row of flip-cards.
   Used on: homepage, products page, category archive header.
   ============================================================ */

.product-category-section {
    background-color: var(--color-bg-dark);
    padding: var(--section-padding) 0;
}

.product-category-section .section-heading {
    color: var(--color-white);
    margin-bottom: var(--space-xl);
}

.product-category-section .section-heading h2 {
    color: var(--color-white);
}

/* Outer wrapper — handles overflow hidden + arrow positioning */
.product-grid-outer {
    position: relative;
}

/* Scrollable track */
.product-grid-track {
    display: flex;
    gap: var(--space-lg);
    overflow-x: auto;
    overflow-y: visible;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;        /* Firefox */
    padding: var(--space-sm) var(--space-xl);
    cursor: grab;
}

.product-grid-track::-webkit-scrollbar { display: none; }
.product-grid-track:active { cursor: grabbing; }

/* CTA row below the grid */
.product-grid-cta {
    text-align: center;
    padding-top: var(--space-xl);
}


/* ── Flip-card item ──────────────────────────────────────── */

.product-flip-card {
    flex: 0 0 var(--product-flip-width);
    width: var(--product-flip-width);
    height: var(--product-flip-height);
    perspective: 800px;
    flex-shrink: 0;
}

.product-flip-card a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.product-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.45s ease;
    border-radius: var(--product-card-radius);
}

.product-flip-card:hover .product-flip-inner,
.product-flip-card:focus-within .product-flip-inner {
    transform: rotateY(180deg);
}

/* Front face */
.product-flip-front,
.product-flip-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--product-card-radius);
    overflow: hidden;
}

.product-flip-front {
    background-color: var(--product-flip-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: var(--space-md);
}

.product-flip-front img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.product-flip-front-label {
    position: relative;
    z-index: 1;
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    text-align: center;
    background-color: rgba(0,0,0,0.45);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    width: 100%;
}

/* Back face */
.product-flip-back {
    background-color: var(--product-flip-back-bg);
    color: var(--product-flip-back-text);
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    text-align: center;
}

.product-flip-back h3 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.product-flip-back p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.85);
    margin: 0;
    line-height: 1.45;
}

/* Active card (currently viewed category) */
.product-flip-card--active .product-flip-inner {
    box-shadow: 0 0 0 3px var(--color-accent), var(--shadow-md);
}


/* ============================================================
   2. Scroll Arrows
   ============================================================ */

.product-scroll-arrows {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.product-scroll-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background-color: var(--product-scroll-arrow-bg);
    color: var(--product-scroll-arrow-color);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition:
        background-color var(--transition-fast),
        transform        var(--transition-fast);
    flex-shrink: 0;
}

.product-scroll-arrow:hover {
    background-color: var(--color-primary-dark);
    transform: scale(1.08);
}

.product-scroll-arrow:disabled {
    opacity: 0.35;
    cursor: default;
    transform: none;
}

/* Arrow SVG icons — inline in the button via PHP */
.product-scroll-arrow svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}


/* ============================================================
   3. Category Archive — Product List
   The grid of product cards shown on taxonomy-product_category.php
   ============================================================ */

.product-list-section {
    padding: var(--section-padding) 0;
    background-color: var(--color-bg-page);
}

.product-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.product-list-item {
    display: block;
    text-decoration: none;
    color: var(--color-text);
    text-align: center;
    transition: transform var(--transition-base);
}

.product-list-item:hover {
    transform: translateY(-4px);
    text-decoration: none;
    color: var(--color-text);
}

.product-list-item-images {
    position: relative;
    aspect-ratio: 1 / 1;
    margin-bottom: var(--space-md);
    border-radius: var(--product-card-radius);
    overflow: hidden;
    background-color: var(--color-gray-100);
}

/* Default image */
.product-list-item-images .img-default {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: var(--space-md);
    transition: opacity var(--transition-base);
}

/* Hover image */
.product-list-item-images .img-hover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.product-list-item:hover .img-default { opacity: 0; }
.product-list-item:hover .img-hover   { opacity: 1; }

.product-list-item h3 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin: 0;
}


/* ============================================================
   4. Product Detail — Layout
   ============================================================ */

.product-detail-section {
    padding: var(--product-detail-padding) 0;
    background-color: var(--product-detail-bg);
}

/* Two-column layout: content left, image right */
.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.product-detail-content { /* left column */ }
.product-detail-visual   { /* right column */ }


/* ============================================================
   5. Product Detail — Header (title, description, CTAs)
   ============================================================ */

.product-detail-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin-bottom: var(--space-md);
}

.product-detail-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

.product-detail-ctas {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

/* Hero / lifestyle image */
.product-detail-hero-image {
    width: 100%;
    border-radius: var(--product-card-radius);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.product-detail-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}


/* ============================================================
   6. Product Detail — Variation Nav (flavor list / tab links)
   Only shown when a product has 2+ variations.
   ============================================================ */

.product-variation-nav {
    margin-bottom: var(--space-xl);
}

.product-variation-nav-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.product-variation-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.product-variation-nav-list li button {
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    border: 2px solid var(--product-tab-border);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition:
        border-color     var(--transition-fast),
        color            var(--transition-fast),
        background-color var(--transition-fast);
}

.product-variation-nav-list li button:hover {
    border-color: var(--product-tab-active-color);
    color: var(--product-tab-active-color);
}

.product-variation-nav-list li button.is-active {
    border-color: var(--product-tab-active-color);
    background-color: var(--product-tab-active-color);
    color: var(--color-white);
}


/* ============================================================
   7. Product Detail — Variation Panels
   ============================================================ */

.product-variation-panels {
    position: relative;
}

.product-variation-panel {
    display: none;
}

.product-variation-panel.is-active {
    display: block;
}

/* Package image */
.product-variation-image {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.product-variation-image img {
    max-height: 320px;
    width: auto;
    margin: 0 auto;
    object-fit: contain;
}

/* Variation name heading */
.product-variation-name {
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

/* No variation name shown when only 1 variation */
.product-variation-panel--single .product-variation-name {
    display: none;
}


/* ============================================================
   8. Product Detail — Nutrition Facts
   ============================================================ */

.product-nutrition {
    background-color: var(--product-nutrition-bg);
    border-radius: var(--product-card-radius);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.product-nutrition-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    text-align: center;
}

.product-nutrition-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.product-nutrition-value {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    color: var(--product-nutrition-text);
    line-height: 1;
}

.product-nutrition-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--product-nutrition-label);
}


/* ============================================================
   9. Product Detail — Certifications
   ============================================================ */

.product-certifications {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
    list-style: none;
    margin: 0 0 var(--space-lg);
    padding: 0;
}

.product-certification img {
    height: 48px;
    width: auto;
    display: block;
}

.product-certification span {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-text-light);
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}


/* ============================================================
   10. Product Detail — Ingredients
   ============================================================ */

.product-ingredients {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.product-ingredients-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.product-ingredients p {
    font-size: 0.82rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
}


/* ============================================================
   11. Back-to-top Anchor
   ============================================================ */

.back-to-grid {
    display: flex;
    justify-content: center;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-lg);
}

.back-to-grid a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.back-to-grid a:hover {
    color: var(--color-primary);
}

.back-to-grid svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    transform: rotate(-90deg);
}


/* ============================================================
   12. Responsive
   ============================================================ */

@media ( max-width: 900px ) {
    .product-detail-layout {
        grid-template-columns: 1fr;
    }

    .product-detail-visual {
        order: -1; /* image above content on tablet */
    }

    .product-nutrition-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media ( max-width: 640px ) {

    :root {
        --product-flip-width:  140px;
        --product-flip-height: 180px;
    }

    .product-list-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }

    .product-nutrition-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .product-nutrition-value {
        font-size: 1.5rem;
    }

    .product-detail-ctas {
        flex-direction: column;
    }

    .product-detail-ctas .btn {
        width: 100%;
        text-align: center;
    }

    .product-variation-nav-list {
        gap: var(--space-xs);
    }
}