/*
Theme Name: Windfall Research Compounds
Theme URI: https://windfallresearch.com
Author: Windfall Research Compounds
Description: WooCommerce theme for Windfall Research Compounds. PNW Scientific identity — nature meets precision. Built for strict Research Use Only (RUO) compliance.
Version: 1.0.0
Requires at least: 6.4
Requires PHP: 8.1
License: GPL-2.0-or-later
Text Domain: windfall
WC requires at least: 8.0
*/

/* ==========================================================================
   1. Design tokens — see branding/windfall_research_compounds_brand_guidelines.md
   ========================================================================== */

:root {
  /* Palette */
  --wf-evergreen: #1a362d;
  --wf-evergreen-hover: #142a23;
  --wf-slate: #4a5568;
  --wf-white: #ffffff;
  --wf-charcoal: #1e1e1e;
  --wf-silver: #f7fafc;

  /* Derived neutrals */
  --wf-border: #e2e8f0;
  --wf-muted: #718096;
  --wf-shadow: rgba(26, 54, 45, 0.08);

  /* Typography */
  --wf-font-display: "Zilla Slab", "Roboto Slab", Georgia, serif;
  --wf-font-body: "Inter", "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Scale */
  --wf-measure: 1200px;
  --wf-gutter: 24px;
  --wf-radius: 4px;
}

/* ==========================================================================
   2. Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--wf-font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--wf-charcoal);
  background: var(--wf-white);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  font-family: var(--wf-font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--wf-evergreen);
  margin: 0 0 0.5em;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2.125rem);
}
h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1.15em;
}

a {
  color: var(--wf-evergreen);
  text-decoration-color: rgba(26, 54, 45, 0.35);
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-color: currentColor;
}

img {
  max-width: 100%;
  height: auto;
}

/* Analytical, tracked-out label treatment used throughout the UI. */
.wf-eyebrow {
  font-family: var(--wf-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--wf-slate);
  margin: 0 0 12px;
}

.wf-wrap {
  max-width: var(--wf-measure);
  margin: 0 auto;
  padding-inline: var(--wf-gutter);
}

.wf-section {
  padding-block: clamp(48px, 7vw, 88px);
}

.wf-section--silver {
  background: var(--wf-silver);
  border-block: 1px solid var(--wf-border);
}

.screen-reader-text {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

/* ==========================================================================
   3. Buttons
   ========================================================================== */

.wf-button,
.woocommerce a.button,
.woocommerce button.button,
.woocommerce input.button,
.woocommerce #respond input#submit,
.woocommerce a.button.alt,
.woocommerce button.button.alt,
.woocommerce input.button.alt {
  display: inline-block;
  font-family: var(--wf-font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 26px;
  border: 1px solid var(--wf-evergreen);
  border-radius: var(--wf-radius);
  background: var(--wf-evergreen);
  color: var(--wf-white);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.wf-button:hover,
.woocommerce a.button:hover,
.woocommerce button.button:hover,
.woocommerce input.button:hover,
.woocommerce #respond input#submit:hover,
.woocommerce a.button.alt:hover,
.woocommerce button.button.alt:hover,
.woocommerce input.button.alt:hover {
  background: var(--wf-evergreen-hover);
  border-color: var(--wf-evergreen-hover);
  color: var(--wf-white);
}

.wf-button--ghost,
.woocommerce a.button.wf-button--ghost {
  background: transparent;
  color: var(--wf-evergreen);
}

.wf-button--ghost:hover,
.woocommerce a.button.wf-button--ghost:hover {
  background: var(--wf-evergreen);
  color: var(--wf-white);
}

.woocommerce .button.disabled,
.woocommerce .button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   4. RUO compliance banners — mandatory sitewide
   ========================================================================== */

/* The banner and header travel together so the notice is always on screen. */
.wf-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
}

.wf-ruo-bar {
  background: var(--wf-charcoal);
  color: var(--wf-white);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  padding: 9px var(--wf-gutter);
}

/* Intended-use statement beneath the add-to-cart button. */
.wf-intended-use {
  border-top: 1px solid var(--wf-border);
  margin-top: 20px;
  padding-top: 16px;
  font-size: 0.875rem;
  color: var(--wf-slate);
  max-width: 60ch;
}

.wf-intended-use strong {
  color: var(--wf-evergreen);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.8125rem;
}

.wf-ruo-notice {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border: 1px solid var(--wf-evergreen);
  border-left-width: 4px;
  background: var(--wf-silver);
  padding: 16px 18px;
  margin-block: 24px;
  border-radius: var(--wf-radius);
}

.wf-ruo-notice__mark {
  flex: none;
  font-family: var(--wf-font-display);
  font-weight: 700;
  color: var(--wf-evergreen);
}

.wf-ruo-notice__body {
  font-size: 0.875rem;
  color: var(--wf-slate);
}

.wf-ruo-notice__body strong {
  display: block;
  color: var(--wf-evergreen);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8125rem;
  margin-bottom: 2px;
}

/* ==========================================================================
   5. Header
   ========================================================================== */

.wf-header {
  background: var(--wf-white);
  border-bottom: 1px solid var(--wf-border);
}

.wf-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 84px;
  max-width: var(--wf-measure);
  margin: 0 auto;
  padding-inline: var(--wf-gutter);
}

.wf-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.wf-brand__mark {
  width: 38px;
  height: 38px;
  flex: none;
}

/* Uploaded logo, used in the header in place of the SVG lockup. */
.custom-logo-link {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.custom-logo {
  height: 60px;
  width: auto;
  max-width: 100%;
}

.wf-brand__name {
  font-family: var(--wf-font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--wf-evergreen);
  line-height: 1;
}

.wf-brand__tagline {
  display: block;
  font-family: var(--wf-font-body);
  font-size: 0.5625rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--wf-slate);
  margin-top: 4px;
}

.wf-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.wf-nav a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--wf-slate);
  text-decoration: none;
}

.wf-nav a:hover,
.wf-nav .current-menu-item > a {
  color: var(--wf-evergreen);
}

.wf-header__actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.wf-cart-link {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wf-evergreen);
  text-decoration: none;
  white-space: nowrap;
}

.wf-cart-link__count {
  display: inline-block;
  min-width: 20px;
  padding: 1px 6px;
  margin-left: 4px;
  border-radius: 999px;
  background: var(--wf-evergreen);
  color: var(--wf-white);
  text-align: center;
  font-size: 0.6875rem;
}

.wf-menu-toggle {
  display: none;
  border: 1px solid var(--wf-border);
  background: var(--wf-white);
  border-radius: var(--wf-radius);
  padding: 8px 12px;
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

/* ==========================================================================
   6. Home page
   ========================================================================== */

.wf-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding-block: clamp(48px, 7vw, 96px);
}

.wf-hero p.wf-hero__lede {
  font-size: 1.0625rem;
  color: var(--wf-slate);
  max-width: 52ch;
}

.wf-hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* Spec panel — the "analytical readout" motif. */
.wf-spec-panel {
  background: var(--wf-evergreen);
  color: var(--wf-white);
  border-radius: var(--wf-radius);
  padding: 32px;
}

.wf-spec-panel h2,
.wf-spec-panel .wf-eyebrow {
  color: var(--wf-white);
}

.wf-spec-panel .wf-eyebrow {
  opacity: 0.7;
}

.wf-spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.wf-spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.875rem;
}

.wf-spec-list li:last-child {
  border-bottom: 0;
}

.wf-spec-list .wf-spec-key {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  opacity: 0.72;
}

.wf-spec-list .wf-spec-value {
  font-family: var(--wf-font-display);
  font-weight: 600;
}

.wf-pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.wf-pillar {
  background: var(--wf-white);
  border: 1px solid var(--wf-border);
  border-top: 3px solid var(--wf-evergreen);
  border-radius: var(--wf-radius);
  padding: 28px 24px;
}

.wf-pillar h3 {
  font-size: 1.0625rem;
}

.wf-pillar p {
  color: var(--wf-slate);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

.wf-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.wf-section__head p {
  color: var(--wf-slate);
  margin: 0;
  max-width: 60ch;
}

/* ==========================================================================
   7. WooCommerce — catalog
   ========================================================================== */

.woocommerce ul.products,
ul.products {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.woocommerce ul.products::before,
.woocommerce ul.products::after {
  content: none;
}

.woocommerce ul.products li.product,
ul.products li.product {
  width: auto !important;
  float: none !important;
  margin: 0 !important;
  display: flex;
  flex-direction: column;
  background: var(--wf-silver);
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius);
  padding: 20px;
  text-align: left;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.woocommerce ul.products li.product:hover {
  border-color: var(--wf-evergreen);
  box-shadow: 0 8px 24px var(--wf-shadow);
}

.woocommerce ul.products li.product a img {
  margin-bottom: 16px;
  background: var(--wf-white);
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius);
}

.woocommerce ul.products li.product .woocommerce-loop-product__title {
  font-family: var(--wf-font-display);
  font-size: 1.0625rem !important;
  font-weight: 600;
  color: var(--wf-evergreen);
  padding: 0 !important;
  margin: 0 0 6px;
}

.woocommerce ul.products li.product .price {
  font-family: var(--wf-font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--wf-slate);
  margin: 0 0 14px;
}

.woocommerce ul.products li.product .price del {
  opacity: 0.55;
  font-weight: 400;
}

.woocommerce ul.products li.product .button {
  margin-top: auto;
  align-self: flex-start;
}

/* Purity / assay badge shown on cards and single products. */
.wf-purity-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--wf-evergreen);
  background: rgba(26, 54, 45, 0.08);
  border: 1px solid rgba(26, 54, 45, 0.2);
  border-radius: 2px;
  padding: 3px 8px;
  margin-bottom: 10px;
}

.woocommerce span.onsale {
  background: var(--wf-slate);
  color: var(--wf-white);
  border-radius: 2px;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  min-height: 0;
  min-width: 0;
  line-height: 1;
  padding: 6px 10px;
}

.woocommerce .woocommerce-result-count,
.woocommerce .woocommerce-ordering {
  color: var(--wf-slate);
  font-size: 0.875rem;
}

/* ==========================================================================
   8. WooCommerce — single product
   ========================================================================== */

.woocommerce div.product .product_title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
}

.woocommerce div.product p.price,
.woocommerce div.product span.price {
  color: var(--wf-evergreen);
  font-family: var(--wf-font-display);
  font-size: 1.5rem;
  font-weight: 600;
}

.woocommerce div.product .woocommerce-tabs ul.tabs {
  padding: 0;
  margin-bottom: 0;
  border-bottom: 1px solid var(--wf-border);
}

.woocommerce div.product .woocommerce-tabs ul.tabs::before {
  border-bottom-color: var(--wf-border);
}

.woocommerce div.product .woocommerce-tabs ul.tabs li {
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  margin: 0 24px 0 0;
}

.woocommerce div.product .woocommerce-tabs ul.tabs li::before,
.woocommerce div.product .woocommerce-tabs ul.tabs li::after {
  content: none;
}

.woocommerce div.product .woocommerce-tabs ul.tabs li a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--wf-slate);
  padding: 14px 0;
}

.woocommerce div.product .woocommerce-tabs ul.tabs li.active a {
  color: var(--wf-evergreen);
  box-shadow: inset 0 -2px 0 var(--wf-evergreen);
}

/* Analytical specification table on the single product page. */
.wf-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 20px;
  font-size: 0.9375rem;
}

.wf-spec-table th,
.wf-spec-table td {
  text-align: left;
  padding: 11px 14px;
  border: 1px solid var(--wf-border);
}

.wf-spec-table th {
  width: 40%;
  background: var(--wf-silver);
  font-family: var(--wf-font-body);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wf-slate);
}

.wf-spec-table td {
  font-family: var(--wf-font-display);
  font-weight: 500;
  color: var(--wf-charcoal);
}

.wf-coa-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wf-evergreen);
}

/* ==========================================================================
   9. WooCommerce — cart / checkout / account
   ========================================================================== */

.woocommerce table.shop_table {
  border-radius: var(--wf-radius);
  border-color: var(--wf-border);
}

.woocommerce table.shop_table th {
  font-family: var(--wf-font-body);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wf-slate);
}

.woocommerce-info,
.woocommerce-message,
.woocommerce-error {
  border-top-color: var(--wf-evergreen);
  background: var(--wf-silver);
  font-size: 0.9375rem;
}

.woocommerce-info::before,
.woocommerce-message::before {
  color: var(--wf-evergreen);
}

.woocommerce-error {
  border-top-color: #9b2c2c;
}

.woocommerce-error::before {
  color: #9b2c2c;
}

.woocommerce form .form-row input.input-text,
.woocommerce form .form-row textarea,
.woocommerce form .form-row select,
.wf-field {
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius);
  padding: 11px 13px;
  font: inherit;
  font-size: 0.9375rem;
  background: var(--wf-white);
}

.woocommerce form .form-row label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--wf-slate);
}

/* Checkout RUO acknowledgement — mandatory per brand guidelines. */
.wf-ruo-acknowledgement {
  border: 1px solid var(--wf-evergreen);
  border-radius: var(--wf-radius);
  background: var(--wf-silver);
  padding: 18px 20px;
  margin-block: 24px;
}

.wf-ruo-acknowledgement .woocommerce-form__label-for-checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--wf-charcoal);
  font-weight: 500;
}

.wf-ruo-acknowledgement input[type="checkbox"] {
  margin-top: 3px;
  flex: none;
  accent-color: var(--wf-evergreen);
}

/* ==========================================================================
   10. Content pages
   ========================================================================== */

.wf-page {
  padding-block: clamp(40px, 5vw, 72px);
}

.wf-page__header {
  border-bottom: 1px solid var(--wf-border);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.wf-prose {
  max-width: 72ch;
}

.wf-prose h2 {
  margin-top: 1.6em;
}

.wf-prose ul,
.wf-prose ol {
  padding-left: 1.25em;
  margin-bottom: 1.15em;
}

.wf-prose li {
  margin-bottom: 0.4em;
}

.wf-prose blockquote {
  border-left: 3px solid var(--wf-evergreen);
  margin: 1.5em 0;
  padding-left: 20px;
  color: var(--wf-slate);
  font-style: normal;
}

.wf-post-meta {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wf-slate);
}

.wf-pagination {
  margin-top: 40px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.wf-pagination .page-numbers {
  border: 1px solid var(--wf-border);
  border-radius: var(--wf-radius);
  padding: 8px 14px;
  text-decoration: none;
  font-size: 0.875rem;
}

.wf-pagination .page-numbers.current {
  background: var(--wf-evergreen);
  border-color: var(--wf-evergreen);
  color: var(--wf-white);
}

/* ==========================================================================
   11. Footer
   ========================================================================== */

.wf-footer {
  background: var(--wf-slate);
  color: #e2e8f0;
  padding-top: 56px;
  margin-top: 64px;
}

.wf-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr));
  gap: 32px;
  padding-bottom: 40px;
}

.wf-footer h2,
.wf-footer h3 {
  color: var(--wf-white);
  font-size: 0.8125rem;
  font-family: var(--wf-font-body);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.wf-footer p {
  font-size: 0.875rem;
  color: #cbd5e0;
}

.wf-footer a {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 0.875rem;
}

.wf-footer a:hover {
  color: var(--wf-white);
  text-decoration: underline;
}

.wf-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.wf-footer li {
  margin-bottom: 9px;
}

.wf-footer__brand .wf-brand__name {
  color: var(--wf-white);
}

.wf-footer__brand .wf-brand__tagline {
  color: #cbd5e0;
}

.wf-footer__legal {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-block: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: #cbd5e0;
}

/* Full site-wide disclaimer — mandated in the global footer. */
.wf-footer__disclaimer {
  background: var(--wf-charcoal);
  color: #cbd5e0;
  padding-block: 20px;
}

.wf-footer__disclaimer p {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.7;
  color: inherit;
  max-width: 100ch;
}

.wf-footer__disclaimer strong {
  color: var(--wf-white);
  letter-spacing: 0.1em;
}

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

@media (max-width: 980px) {
  .wf-hero {
    grid-template-columns: 1fr;
  }

  .wf-pillars,
  .woocommerce ul.products,
  ul.products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .wf-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .wf-menu-toggle {
    display: block;
  }

  .wf-header__inner {
    flex-wrap: wrap;
    min-height: 0;
    padding-block: 14px;
  }

  .wf-nav {
    order: 3;
    flex-basis: 100%;
  }

  .wf-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-block: 14px 6px;
  }

  .wf-pillars,
  .woocommerce ul.products,
  ul.products,
  .wf-footer__grid {
    grid-template-columns: 1fr;
  }

  .wf-section__head {
    flex-direction: column;
    align-items: flex-start;
  }

  .wf-ruo-bar {
    letter-spacing: 0.06em;
    font-size: 0.6875rem;
  }
}