/* ============================================================
   VALA · Product Detail — Nature Distilled Edition
   Re-themed to match the storefront "nature" design system
   (Material Design 3 + Organic Biophilic). Reuses the same
   --md-* tokens defined in store-nature.css / tracking-nature.css.
   Keeps the JS hooks used by product-detail.js:
   #pd-actions, #pd-main-image, #pd-attr-select, .pd-thumb,
   .add-btn, .qty-stepper, .plusButton, .minuseButton
   ============================================================ */

/* -------------------- PAGE WRAPPER -------------------- */
.pd-page {
    position: relative;
    z-index: 1;
    padding: var(--md-space-md) var(--md-space-lg) var(--md-space-3xl);
    display: flex;
    flex-direction: column;
    gap: var(--md-space-lg);
}

/* Tablet: two-column layout for gallery + buybox using CSS Grid */
@media (min-width: 768px) {
    .pd-page {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        gap: var(--md-space-xl);
        padding: var(--md-space-xl) var(--md-space-xl) var(--md-space-3xl);
    }

    .pd-gallery {
        grid-column: 1;
        grid-row: 1;
        margin-bottom: 0;
        position: sticky;
        top: calc(var(--md-space-lg) + 60px); /* account for sticky header */
        align-self: start;
    }

    .pd-buybox {
        grid-column: 2;
        grid-row: 1;
        position: sticky;
        top: calc(var(--md-space-lg) + 60px);
        align-self: start;
    }

    /* All content sections span full width below gallery+buybox */
    .pd-section {
        grid-column: 1 / -1;
    }
}

/* Laptop / Desktop: wider layout */
@media (min-width: 1024px) {
    .pd-page {
        grid-template-columns: 1fr 1fr;
        gap: var(--md-space-2xl);
        padding: var(--md-space-2xl) var(--md-space-2xl) var(--md-space-3xl);
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .pd-page {
        max-width: 1100px;
        margin: 0 auto;
        gap: var(--md-space-3xl);
    }
}

/* -------------------- GALLERY -------------------- */
.pd-gallery {
    margin-bottom: var(--md-space-md);
    animation: fadeInUp var(--md-duration-long) var(--md-easing-standard) both;
}

.pd-gallery-main {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--md-radius-lg);
    background: var(--md-surface-container-lowest);
    border: 1px solid var(--md-outline-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--md-elevation-2);
}

.pd-gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: var(--md-space-lg);
    transition: transform var(--md-duration-medium) var(--md-easing-standard);
}

.pd-gallery-main:hover img {
    transform: scale(1.04);
}

/* Sale / discount badge on the image */
.pd-badge {
    position: absolute;
    top: var(--md-space-sm);
    left: var(--md-space-sm);
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px var(--md-space-md);
    border-radius: var(--md-radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: var(--md-elevation-1);
}

.pd-badge--sale {
    background: linear-gradient(135deg, var(--md-secondary), #D4957A);
    color: var(--md-on-secondary);
}

/* Thumbnails */
.pd-gallery-thumbs {
    display: flex;
    gap: var(--md-space-sm);
    margin-top: var(--md-space-sm);
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}

.pd-thumb {
    flex: 0 0 auto;
    width: 64px;
    height: 64px;
    border-radius: var(--md-radius-md);
    border: 1.5px solid var(--md-outline-variant);
    background: var(--md-surface-container-lowest);
    padding: 4px;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--md-duration-short) var(--md-easing-standard);
}

.pd-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: calc(var(--md-radius-md) - 4px);
}

.pd-thumb:hover {
    border-color: rgba(138, 154, 126, 0.4);
    transform: translateY(-2px);
}

.pd-thumb.active {
    border-color: var(--md-primary);
    box-shadow: 0 0 0 3px var(--md-primary-container);
}

/* Tablet+ gallery adjustments */
@media (min-width: 768px) {
    .pd-gallery-main {
        aspect-ratio: 4 / 3;
        border-radius: var(--md-radius-xl);
    }

    .pd-gallery-main img {
        padding: var(--md-space-xl);
    }

    .pd-gallery-thumbs {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--md-space-md);
    }

    .pd-thumb {
        width: 72px;
        height: 72px;
    }

    .pd-badge {
        top: var(--md-space-md);
        left: var(--md-space-md);
        padding: 6px var(--md-space-lg);
        font-size: 0.75rem;
    }
}

/* Desktop gallery */
@media (min-width: 1024px) {
    .pd-gallery-main {
        aspect-ratio: 3 / 4;
        max-height: 500px;
    }

    .pd-gallery-main img {
        padding: var(--md-space-2xl);
    }

    .pd-thumb {
        width: 80px;
        height: 80px;
    }
}

/* -------------------- BUYBOX (uses md-tracking-card surface) -------------------- */
.pd-buybox {
    animation: fadeInUp var(--md-duration-long) var(--md-easing-standard) 0.05s both;
}

.pd-heading {
    margin-bottom: var(--md-space-md);
}

.pd-brand {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--md-secondary);
    margin-bottom: var(--md-space-xs);
}

.pd-title {
    font-family: var(--md-font-display);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--md-on-surface);
}

/* Price */
.pd-price-row {
    display: flex;
    align-items: baseline;
    gap: var(--md-space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--md-space-sm);
}

.pd-old-price {
    font-size: 0.9rem;
    color: var(--md-on-surface-variant);
    text-decoration: line-through;
    opacity: 0.7;
}

.pd-current-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--md-primary);
    font-variant-numeric: tabular-nums;
}

.pd-current-price small {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--md-on-surface-variant);
    margin-right: 2px;
}

/* Stock */
.pd-stock-row {
    margin-bottom: var(--md-space-md);
}

.pd-stock {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px var(--md-space-md);
    border-radius: var(--md-radius-full);
    font-size: 0.78rem;
    font-weight: 600;
}

.pd-stock i {
    font-size: 0.8rem;
}

.pd-stock-in {
    background: rgba(138, 154, 126, 0.12);
    color: var(--md-primary);
    border: 1px solid rgba(138, 154, 126, 0.18);
}

.pd-stock-out {
    background: rgba(201, 124, 92, 0.12);
    color: var(--md-secondary);
    border: 1px solid rgba(201, 124, 92, 0.18);
}

/* Attribute / variant select */
.pd-attr {
    margin-bottom: var(--md-space-md);
}

.pd-attr-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--md-on-surface-variant);
    margin-bottom: var(--md-space-xs);
}

.pd-select-wrap {
    position: relative;
}

.pd-attr-select {
    width: 100%;
    padding: 14px 18px 14px 44px;
    background: rgba(255, 255, 255, 0.5);
    border: 1.5px solid var(--md-outline);
    border-radius: var(--md-radius-full);
    color: var(--md-on-surface);
    font-family: var(--md-font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--md-duration-short) var(--md-easing-standard);
    appearance: none;
    -webkit-appearance: none;
    box-shadow: 0 2px 8px rgba(46, 42, 38, 0.04);
}

.pd-attr-select:focus {
    outline: none;
    border-color: var(--md-primary);
    box-shadow: 0 0 0 4px var(--md-primary-container), 0 4px 12px rgba(46, 42, 38, 0.06);
    background: rgba(255, 255, 255, 0.85);
}

.pd-select-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-on-surface-variant);
    font-size: 0.8rem;
    pointer-events: none;
}

/* Actions container */
.pd-actions {
    margin-top: var(--md-space-xs);
}

/* -------------------- BUYBOX RESPONSIVE -------------------- */
@media (min-width: 768px) {
    .pd-title {
        font-size: 1.75rem;
    }

    .pd-current-price {
        font-size: 1.75rem;
    }

    .pd-old-price {
        font-size: 1rem;
    }

    .pd-attr-select {
        padding: 16px 20px 16px 48px;
        font-size: 0.95rem;
    }

    .add-btn {
        padding: var(--md-space-lg) var(--md-space-xl);
        font-size: 1rem;
    }

    .qty-stepper .plusButton,
    .qty-stepper .minuseButton {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    .qty-stepper span {
        font-size: 1.1rem;
    }
}

@media (min-width: 1024px) {
    .pd-title {
        font-size: 2rem;
    }

    .pd-current-price {
        font-size: 2rem;
    }

    .pd-brand {
        font-size: 0.85rem;
    }

    .pd-attr-select {
        padding: 18px 24px 18px 52px;
        font-size: 1rem;
    }

    .add-btn {
        padding: var(--md-space-lg) var(--md-space-2xl);
        font-size: 1.05rem;
    }
}

/* -------------------- INJECTED BUTTONS (from product-detail.js) -------------------- */
.add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--md-space-sm);
    width: 100%;
    padding: var(--md-space-md) var(--md-space-lg);
    border: none;
    border-radius: var(--md-radius-full);
    background: linear-gradient(135deg, var(--md-primary), #9BAA8E);
    color: var(--md-on-primary);
    font-family: var(--md-font-label);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--md-elevation-1);
    transition: all var(--md-duration-short) var(--md-easing-standard);
    position: relative;
    overflow: hidden;
}

.add-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(46, 42, 38, 0.15) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0);
    transition: transform var(--md-duration-medium) var(--md-easing-standard),
                opacity var(--md-duration-medium) var(--md-easing-standard);
    border-radius: inherit;
    pointer-events: none;
}

.add-btn:active::after {
    opacity: 1;
    transform: scale(2);
    transition: none;
}

.add-btn:hover {
    box-shadow: var(--md-elevation-2);
    transform: translateY(-1px);
}

.add-btn:active {
    transform: translateY(0) scale(0.98);
}

/* Quantity stepper (matches cart drawer stepper) */
.qty-stepper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: var(--md-primary-container);
    border-radius: var(--md-radius-full);
    padding: 4px;
    border: 1px solid var(--md-outline-variant);
}

.qty-stepper .plusButton,
.qty-stepper .minuseButton {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(138, 154, 126, 0.12);
    color: var(--md-primary);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--md-duration-short) var(--md-easing-standard);
    flex-shrink: 0;
}

.qty-stepper .plusButton:hover,
.qty-stepper .minuseButton:hover {
    background: rgba(138, 154, 126, 0.24);
}

.qty-stepper .plusButton:active,
.qty-stepper .minuseButton:active {
    transform: scale(0.92);
}

.qty-stepper span {
    flex: 1;
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--md-on-surface);
    font-variant-numeric: tabular-nums;
}

/* -------------------- CONTENT SECTIONS (use md-tracking-card surface) -------------------- */
.pd-section {
    animation: fadeInUp var(--md-duration-long) var(--md-easing-standard) both;
}

.pd-section-title {
    display: flex;
    align-items: center;
    gap: var(--md-space-sm);
    font-family: var(--md-font-headline);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--md-on-surface);
    margin-bottom: var(--md-space-md);
    padding-bottom: var(--md-space-sm);
    border-bottom: 1px solid var(--md-outline-variant);
}

.pd-section-icon {
    color: var(--md-primary);
    font-size: 1rem;
}

.pd-section-body {
    font-size: 0.92rem;
    line-height: 1.9;
    color: var(--md-on-surface-variant);
}

/* Expert review card */
.pd-review-card {
    background: var(--md-secondary-container);
    border: 1px solid rgba(201, 124, 92, 0.1);
    border-right: 3px solid var(--md-secondary);
    border-radius: var(--md-radius-md);
    padding: var(--md-space-md);
}

.pd-review-title {
    font-family: var(--md-font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--md-on-surface);
    margin-bottom: var(--md-space-sm);
}

.pd-review-body {
    font-size: 0.9rem;
    line-height: 1.9;
    color: var(--md-on-surface-variant);
}

/* Technical specs table */
.pd-specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.pd-specs-table tr {
    border-bottom: 1px solid var(--md-outline-variant);
}

.pd-specs-table tr:last-child {
    border-bottom: none;
}

.pd-specs-table th {
    text-align: right;
    padding: var(--md-space-sm) var(--md-space-xs);
    color: var(--md-on-surface-variant);
    font-weight: 600;
    width: 40%;
    vertical-align: top;
}

.pd-specs-table td {
    padding: var(--md-space-sm) var(--md-space-xs);
    color: var(--md-on-surface);
    font-weight: 500;
}

/* FAQ accordion */
.pd-accordion {
    display: flex;
    flex-direction: column;
    gap: var(--md-space-sm);
}

.pd-faq-item {
    background: var(--md-surface-container);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--md-radius-md);
    padding: 0 var(--md-space-md);
    transition: all var(--md-duration-short) var(--md-easing-standard);
}

.pd-faq-item[open] {
    background: var(--md-surface-container-high);
    border-color: rgba(138, 154, 126, 0.25);
}

.pd-faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: var(--md-space-md) 0;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--md-on-surface);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--md-space-sm);
}

.pd-faq-item summary::-webkit-details-marker {
    display: none;
}

.pd-faq-item summary::after {
    content: '';
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--md-primary);
    border-bottom: 2px solid var(--md-primary);
    transform: rotate(45deg);
    transition: transform var(--md-duration-short) var(--md-easing-standard);
    flex-shrink: 0;
    margin-top: -4px;
}

.pd-faq-item[open] summary::after {
    transform: rotate(-135deg);
    margin-top: 2px;
}

.pd-faq-item p {
    padding: 0 0 var(--md-space-md);
    font-size: 0.88rem;
    line-height: 1.9;
    color: var(--md-on-surface-variant);
}

/* Customer reviews */
.pd-reviews-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--md-space-md);
}

.pd-review-item {
    background: var(--md-surface-container);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--md-radius-md);
    padding: var(--md-space-md);
}

.pd-review-item-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--md-space-sm);
    margin-bottom: var(--md-space-xs);
}

.pd-review-author {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--md-on-surface);
}

.pd-review-rating {
    color: var(--md-secondary);
    letter-spacing: 2px;
    font-size: 0.95rem;
}

.pd-review-item-body {
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--md-on-surface-variant);
}

.pd-review-item-date {
    display: block;
    margin-top: var(--md-space-xs);
    font-size: 0.75rem;
    color: rgba(46, 42, 38, 0.4);
}

/* Related keywords */
.pd-keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--md-space-sm);
}

.pd-keyword-tag {
    display: inline-flex;
    align-items: center;
    padding: 6px var(--md-space-md);
    border-radius: var(--md-radius-full);
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--md-outline-variant);
    transition: all var(--md-duration-short) var(--md-easing-standard);
    cursor: default;
}

.pd-keyword-tag:hover {
    background: rgba(138, 154, 126, 0.15);
    border-color: var(--md-primary);
}

/* -------------------- CONTENT SECTIONS RESPONSIVE -------------------- */
@media (min-width: 768px) {
    .pd-section {
        padding: var(--md-space-lg);
        border-radius: var(--md-radius-lg);
    }

    .pd-section-title {
        font-size: 1.2rem;
    }

    .pd-section-body {
        font-size: 0.95rem;
        line-height: 2;
    }

    .pd-specs-table {
        font-size: 0.9rem;
    }

    .pd-specs-table th {
        width: 35%;
        padding: var(--md-space-md) var(--md-space-sm);
    }

    .pd-specs-table td {
        padding: var(--md-space-md) var(--md-space-sm);
    }

    .pd-review-item {
        padding: var(--md-space-lg);
    }

    .pd-faq-item {
        padding: 0 var(--md-space-lg);
    }

    .pd-faq-item summary {
        padding: var(--md-space-lg) 0;
        font-size: 0.95rem;
    }

    .pd-faq-item p {
        font-size: 0.9rem;
    }

    /* Hover effects for desktop */
    .pd-gallery-main {
        box-shadow: var(--md-elevation-3);
        transition: box-shadow var(--md-duration-medium) var(--md-easing-standard);
    }

    .pd-gallery-main:hover {
        box-shadow: var(--md-elevation-4);
    }

    .pd-buybox {
        transition: box-shadow var(--md-duration-medium) var(--md-easing-standard),
                    transform var(--md-duration-medium) var(--md-easing-standard);
    }

    .pd-buybox:hover {
        box-shadow: var(--md-elevation-3);
        transform: translateY(-2px);
    }

    /* Constrain content sections width for readability */
    .pd-section {
        max-width: 100%;
    }
}

@media (min-width: 1024px) {
    .pd-section {
        padding: var(--md-space-xl);
        border-radius: var(--md-radius-xl);
    }

    .pd-section-title {
        font-size: 1.3rem;
    }

    .pd-section-body {
        font-size: 1rem;
    }

    .pd-specs-table {
        font-size: 0.95rem;
    }

    .pd-specs-table th {
        width: 30%;
    }

    .pd-review-item {
        padding: var(--md-space-xl);
    }

    .pd-review-title {
        font-size: 1.1rem;
    }

    .pd-review-body {
        font-size: 0.95rem;
    }

    .pd-faq-item {
        padding: 0 var(--md-space-xl);
    }

    .pd-faq-item summary {
        padding: var(--md-space-xl) 0;
        font-size: 1rem;
    }

    .pd-faq-item p {
        font-size: 0.95rem;
    }

    .pd-keyword-tag {
        padding: 8px var(--md-space-lg);
        font-size: 0.85rem;
    }

    /* Constrain content sections for optimal reading width */
    .pd-section {
        max-width: 900px;
    }
}

@media (min-width: 1280px) {
    .pd-section {
        max-width: 1000px;
    }
}

/* -------------------- ACCESSIBILITY -------------------- */
@media (prefers-reduced-motion: reduce) {
    .pd-gallery-main img,
    .pd-thumb,
    .add-btn,
    .qty-stepper button,
    .pd-faq-item summary::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

.pd-thumb:focus-visible,
.add-btn:focus-visible,
.qty-stepper button:focus-visible,
.pd-attr-select:focus-visible {
    outline: 2px solid var(--md-primary);
    outline-offset: 2px;
}

/* ============================================================
   PHONE-ONLY RESPONSIVE FIXES (product detail) — scoped to
   max-width queries; desktop/tablet untouched.
   ============================================================ */

@media (max-width: 480px) {
    .pd-page {
        padding: var(--md-space-sm) var(--md-space-md) var(--md-space-3xl);
    }

    /* Thumbnails: horizontal scroller */
    .pd-gallery-thumbs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 6px;
    }

    .pd-thumb {
        flex: 0 0 60px;
        width: 60px;
        height: 60px;
    }

    /* Price row wraps */
    .pd-price-row {
        flex-wrap: wrap;
        gap: var(--md-space-xs);
    }

    /* Action buttons stack full-width */
    .pd-actions {
        display: flex;
        flex-direction: column;
        gap: var(--md-space-sm);
    }

    .pd-actions button {
        width: 100%;
        min-height: 48px;
    }

    /* Specs table scrolls instead of stretching */
    .pd-specs-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Long text breaks safely */
    .pd-specs-table td,
    .pd-section-body,
    .pd-review-body {
        word-break: break-word;
        overflow-wrap: anywhere;
    }
}