/**
 * Prescott Bio Canada - Product Page Styles
 * Styles for single product pages, specs tables, COA modules.
 * All values reference tokens.css custom properties.
 */

/* ==========================================================================
   Product Layout — Two Column (image/placeholder + details)
   ========================================================================== */

.pbc-product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pbc-space-4);
  align-items: start;
  margin-bottom: var(--pbc-space-4);
}

.pbc-product-layout__media {
  position: relative;
}

.pbc-product-layout__details {
  display: flex;
  flex-direction: column;
  gap: var(--pbc-space-2);
}

/* ==========================================================================
   Molecular Placeholder (when no product image)
   ========================================================================== */

.pbc-product-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--pbc-off-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: var(--pbc-radius);
  padding: var(--pbc-space-5) var(--pbc-space-3);
  min-height: 300px;
  text-align: center;
}

.pbc-product-placeholder__icon {
  color: var(--pbc-gray-2);
  margin-bottom: var(--pbc-space-2);
}

.pbc-product-placeholder__formula {
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-h3);
  line-height: var(--pbc-lh-h3);
  color: var(--pbc-graphite);
  letter-spacing: 0.02em;
  margin-bottom: var(--pbc-space-1);
}

.pbc-product-placeholder__code {
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  color: var(--pbc-gray-2);
}

/* ==========================================================================
   Product Header
   ========================================================================== */

.product-header {
  margin-bottom: var(--pbc-space-3);
}

.product-header__catalog-code {
  display: inline-block;
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  color: var(--pbc-accessible-teal);
  background-color: rgba(7, 138, 148, 0.08);
  border: 1px solid rgba(7, 138, 148, 0.2);
  padding: 3px var(--pbc-space-1);
  border-radius: 4px;
  margin-bottom: var(--pbc-space-1);
  letter-spacing: 0.02em;
}

.product-header__title {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-h2);
  font-weight: 700;
  line-height: var(--pbc-lh-h2);
  color: var(--pbc-near-black);
  margin: 0 0 var(--pbc-space-1);
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Intended Use Statement
   ========================================================================== */

.intended-use {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  font-style: italic;
  line-height: var(--pbc-lh-body);
  color: var(--pbc-graphite);
  padding: var(--pbc-space-2);
  background-color: var(--pbc-off-white);
  border-left: 3px solid var(--pbc-gray-2);
  margin-bottom: var(--pbc-space-4);
}

/* ==========================================================================
   Specs Summary Card (compact above-the-fold summary)
   ========================================================================== */

.pbc-product-specs {
  background-color: var(--pbc-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: var(--pbc-radius);
  overflow: hidden;
  margin-bottom: var(--pbc-space-3);
}

.pbc-product-specs__header {
  display: flex;
  align-items: center;
  gap: var(--pbc-space-1);
  padding: 10px var(--pbc-space-2);
  background-color: var(--pbc-off-white);
  border-bottom: 1px solid var(--pbc-gray-1);
}

.pbc-product-specs__header-icon {
  color: var(--pbc-accessible-teal);
  flex-shrink: 0;
}

.pbc-product-specs__header-title {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-small);
  font-weight: 700;
  line-height: var(--pbc-lh-small);
  color: var(--pbc-graphite);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.pbc-product-specs__body {
  padding: 0;
}

.pbc-product-specs__row {
  display: flex;
  align-items: baseline;
  border-bottom: 1px solid var(--pbc-gray-1);
  padding: 0;
}

.pbc-product-specs__row:last-child {
  border-bottom: none;
}

.pbc-product-specs__label {
  flex: 0 0 110px;
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-small);
  font-weight: 600;
  line-height: var(--pbc-lh-small);
  color: var(--pbc-graphite);
  padding: 8px 12px;
  background-color: var(--pbc-off-white);
}

.pbc-product-specs__value {
  flex: 1;
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  color: var(--pbc-near-black);
  padding: 8px 12px;
}

/* ==========================================================================
   Product Specs Table (full below-the-fold)
   ========================================================================== */

.product-specs {
  margin-bottom: var(--pbc-space-4);
}

.product-specs__title {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-h2);
  font-weight: 700;
  line-height: var(--pbc-lh-h2);
  color: var(--pbc-near-black);
  margin: 0 0 var(--pbc-space-2);
}

.product-specs__table {
  width: 100%;
  border-collapse: collapse;
}

.product-specs__table th,
.product-specs__table td {
  padding: var(--pbc-space-1) var(--pbc-space-2);
  text-align: left;
  border-bottom: 1px solid var(--pbc-gray-1);
  vertical-align: top;
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  line-height: var(--pbc-lh-body);
}

.product-specs__table th {
  font-weight: 600;
  color: var(--pbc-graphite);
  width: 200px;
  white-space: nowrap;
  background-color: var(--pbc-off-white);
}

.product-specs__table td {
  color: var(--pbc-graphite);
}

.product-specs__table tr:last-child th,
.product-specs__table tr:last-child td {
  border-bottom: none;
}

/* Monospace cells for data values */
.product-specs__mono {
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  letter-spacing: -0.01em;
}

/* Sequence cell - word break for long amino acid sequences */
.product-specs__sequence {
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  word-break: break-all;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   COA / Documents Notice
   ========================================================================== */

.coa-notice {
  margin-top: var(--pbc-space-3);
  margin-bottom: var(--pbc-space-3);
}

.coa-notice p {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  line-height: var(--pbc-lh-body);
  color: var(--pbc-graphite);
  font-style: italic;
  margin: 0;
}

/* Enhanced COA/Documents block with icon and teal border */
.pbc-coa-block {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: var(--pbc-space-2) var(--pbc-space-3);
  background-color: var(--pbc-off-white);
  border-left: 3px solid var(--pbc-accessible-teal);
  border-radius: 0 var(--pbc-radius-sm) var(--pbc-radius-sm) 0;
  margin: var(--pbc-space-3) 0;
}

.pbc-coa-block__icon {
  flex-shrink: 0;
  color: var(--pbc-accessible-teal);
  margin-top: 2px;
}

.pbc-coa-block__content {
  flex: 1;
}

.pbc-coa-block__heading {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  font-weight: 600;
  line-height: var(--pbc-lh-body);
  color: var(--pbc-near-black);
  margin: 0 0 4px;
}

.pbc-coa-block__text {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-small);
  line-height: var(--pbc-lh-small);
  color: var(--pbc-graphite);
  margin: 0;
}

/* ==========================================================================
   WooCommerce Product Description Tab
   ========================================================================== */

.woocommerce-Tabs-panel h3 {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-h3);
  font-weight: 600;
  color: var(--pbc-near-black);
  margin: var(--pbc-space-3) 0 var(--pbc-space-2);
}

.woocommerce-Tabs-panel table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--pbc-space-3);
}

.woocommerce-Tabs-panel table td {
  padding: var(--pbc-space-1) var(--pbc-space-2);
  border-bottom: 1px solid var(--pbc-gray-1);
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  line-height: var(--pbc-lh-body);
  color: var(--pbc-graphite);
  vertical-align: top;
}

.woocommerce-Tabs-panel table td:first-child {
  font-weight: 600;
  white-space: nowrap;
  width: 200px;
  background-color: var(--pbc-off-white);
}

/* ==========================================================================
   Lot Number Dropdown
   ========================================================================== */

.lot-selector {
  margin-bottom: var(--pbc-space-3);
}

.lot-selector__label {
  display: block;
  margin-bottom: var(--pbc-space-1);
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  font-weight: 600;
  line-height: var(--pbc-lh-body);
  color: var(--pbc-graphite);
}

.lot-selector__select {
  display: block;
  width: 100%;
  max-width: 320px;
  padding: var(--pbc-space-1) var(--pbc-space-2);
  font-family: var(--pbc-font-mono);
  font-size: var(--pbc-text-data);
  line-height: var(--pbc-lh-data);
  color: var(--pbc-graphite);
  background-color: var(--pbc-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: var(--pbc-border-radius);
  cursor: pointer;
}

.lot-selector__select:focus {
  border-color: var(--pbc-accessible-teal);
  outline: var(--pbc-focus-outline);
  outline-offset: var(--pbc-focus-offset);
}

/* ==========================================================================
   Add-to-Cart Certification
   ========================================================================== */

.cart-certification {
  padding: var(--pbc-space-2);
  background-color: var(--pbc-off-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: var(--pbc-border-radius);
  margin-bottom: var(--pbc-space-3);
}

.cart-certification__check {
  display: flex;
  align-items: flex-start;
  gap: var(--pbc-space-1);
}

.cart-certification__input {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--pbc-accessible-teal);
  cursor: pointer;
}

.cart-certification__input:focus-visible {
  outline: var(--pbc-focus-outline);
  outline-offset: var(--pbc-focus-offset);
}

.cart-certification__label {
  font-family: var(--pbc-font-ui);
  font-size: var(--pbc-text-body);
  line-height: var(--pbc-lh-body);
  color: var(--pbc-graphite);
  cursor: pointer;
}

/* ==========================================================================
   Documentation Buttons
   ========================================================================== */

.doc-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pbc-space-1);
  margin-bottom: var(--pbc-space-4);
}

/* ==========================================================================
   Product Research References
   ========================================================================== */

.pbc-product-refs {
  margin-top: var(--pbc-space-4);
  margin-bottom: var(--pbc-space-4);
  padding: var(--pbc-space-3) 0;
  border-top: 1px solid var(--pbc-gray-1);
  border-bottom: 1px solid var(--pbc-gray-1);
}

.pbc-product-refs__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--pbc-space-2);
}

.pbc-product-refs__title {
  font-family: var(--pbc-font-ui);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--pbc-near-black);
  margin: 0;
}

.pbc-product-refs__count {
  font-family: var(--pbc-font-ui);
  font-size: 13px;
  line-height: 1.54;
  color: var(--pbc-graphite);
}

.pbc-product-refs__disclaimer-text {
  font-family: var(--pbc-font-ui);
  font-size: 12px;
  line-height: 1.5;
  color: var(--pbc-graphite);
  margin: 0 0 var(--pbc-space-2);
}

.pbc-product-refs__list {
  margin-bottom: var(--pbc-space-2);
}

.pbc-product-refs__card {
  padding: var(--pbc-space-1) 0;
  border-bottom: 1px solid var(--pbc-gray-1);
}

.pbc-product-refs__card:last-child {
  border-bottom: none;
}

.pbc-product-refs__card-title {
  font-family: var(--pbc-font-ui);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--pbc-near-black);
  margin: 0 0 4px;
}

.pbc-product-refs__card-cite {
  font-family: var(--pbc-font-ui);
  font-size: 12px;
  line-height: 1.5;
  color: var(--pbc-graphite);
  margin: 0;
}

.pbc-product-refs__pubmed-link {
  color: var(--pbc-accessible-teal);
  text-decoration: none;
}

.pbc-product-refs__pubmed-link:hover {
  text-decoration: underline;
}

.pbc-product-refs__footer {
  margin-top: var(--pbc-space-2);
}

.pbc-product-refs__view-all {
  font-family: var(--pbc-font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--pbc-accessible-teal);
  text-decoration: none;
}

.pbc-product-refs__view-all:hover {
  text-decoration: underline;
}

.pbc-product-refs__ruo-notice {
  font-family: var(--pbc-font-ui);
  font-size: 12px;
  line-height: 1.5;
  color: var(--pbc-graphite);
  margin: var(--pbc-space-1) 0 0;
}

.pbc-product-refs__empty {
  font-family: var(--pbc-font-ui);
  font-size: 14px;
  line-height: 1.5;
  color: var(--pbc-graphite);
  font-style: italic;
  margin: var(--pbc-space-2) 0 0;
}

/* ==========================================================================
   Trust Signals — Compact Horizontal Badges (below add-to-cart)
   ========================================================================== */

.pbc-trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--pbc-space-2) 0;
}

.pbc-trust-badges__item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  background-color: var(--pbc-off-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: 100px;
  font-family: var(--pbc-font-ui);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  color: var(--pbc-graphite);
  white-space: nowrap;
}

.pbc-trust-badges__icon {
  flex-shrink: 0;
  color: var(--pbc-accessible-teal);
  width: 14px;
  height: 14px;
}

/* ==========================================================================
   Payment Icons Row — Cleaner
   ========================================================================== */

.pbc-payment-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: var(--pbc-space-1) 0;
}

.pbc-payment-row__label {
  font-family: var(--pbc-font-ui);
  font-size: 11px;
  font-weight: 400;
  line-height: 1;
  color: var(--pbc-gray-2);
  margin-right: 4px;
  white-space: nowrap;
}

.pbc-payment-row__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 8px;
  background-color: var(--pbc-white);
  border: 1px solid var(--pbc-gray-1);
  border-radius: var(--pbc-radius-sm);
  font-family: var(--pbc-font-ui);
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  color: var(--pbc-graphite);
}

/* ==========================================================================
   Product Page Responsive
   ========================================================================== */

@media (max-width: 768px) {
  /* Stack product layout on mobile */
  .pbc-product-layout {
    grid-template-columns: 1fr;
    gap: var(--pbc-space-2);
  }

  .pbc-product-placeholder {
    min-height: 180px;
    padding: var(--pbc-space-3) var(--pbc-space-2);
  }

  .pbc-product-placeholder__formula {
    font-size: 18px;
  }

  /* Constrain product image/media to keep buy box visible */
  .pbc-product-layout__media {
    max-height: 280px;
    overflow: hidden;
  }

  .pbc-product-layout__media img {
    width: 100%;
    height: auto;
    max-height: 280px;
    object-fit: contain;
  }

  /* Product header — tighter on mobile */
  .product-header__title {
    font-size: 22px;
    line-height: 28px;
  }

  .product-header {
    margin-bottom: var(--pbc-space-2);
  }

  /* Intended use — tighter */
  .intended-use {
    font-size: 14px;
    padding: var(--pbc-space-1) var(--pbc-space-2);
    margin-bottom: var(--pbc-space-2);
  }

  /* Specs card — stacked on narrow screens */
  .pbc-product-specs__row {
    flex-direction: column;
    align-items: stretch;
  }

  .pbc-product-specs__label {
    flex: none;
    width: 100%;
    font-size: 11px;
    padding: 6px 10px 2px;
    background-color: transparent;
  }

  .pbc-product-specs__value {
    font-size: 13px;
    padding: 2px 10px 6px;
  }

  /* Certification checkbox — larger touch target */
  .cart-certification__input {
    min-width: 22px;
    min-height: 22px;
    width: 22px;
    height: 22px;
  }

  /* Trust badges wrap on mobile */
  .pbc-trust-badges {
    gap: 6px;
  }

  .pbc-trust-badges__item {
    font-size: 11px;
    padding: 4px 8px;
  }

  /* Payment row — compact */
  .pbc-payment-row {
    flex-wrap: wrap;
    gap: 4px;
  }

  .pbc-payment-row__label {
    width: 100%;
    margin-right: 0;
    margin-bottom: 2px;
  }

  /* COA block compact on mobile */
  .pbc-coa-block {
    padding: var(--pbc-space-2);
    gap: 8px;
  }

  .pbc-coa-block__heading {
    font-size: 14px;
  }

  .pbc-coa-block__text {
    font-size: 12px;
  }

  /* Product specs section */
  .product-specs__title {
    font-size: 20px;
  }

  /* Research references */
  .pbc-product-refs {
    margin-top: var(--pbc-space-2);
    margin-bottom: var(--pbc-space-2);
    padding: var(--pbc-space-2) 0;
  }

  .pbc-product-refs__title {
    font-size: 18px;
  }

  /* Lot selector full width */
  .lot-selector__select {
    max-width: 100%;
    min-height: 44px;
    font-size: 16px; /* prevent iOS zoom */
  }

  /* Doc buttons — stack full width */
  .doc-buttons {
    flex-direction: column;
  }

  .doc-buttons .pbc-btn,
  .doc-buttons .btn-secondary {
    width: 100%;
    min-height: 44px;
    justify-content: center;
  }

  /* WooCommerce tabs — tighter on mobile */
  .woocommerce-Tabs-panel table td:first-child {
    width: auto;
    white-space: normal;
  }

  .woocommerce-Tabs-panel table td {
    display: block;
    padding: 4px var(--pbc-space-1);
  }

  .woocommerce-Tabs-panel table tr {
    display: block;
    padding: var(--pbc-space-1) 0;
    border-bottom: 1px solid var(--pbc-gray-1);
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .pbc-product-layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--pbc-space-3);
  }
}