/* ============================================================
   PILLAR PAGE TEMPLATE
   ============================================================ */

/* --- GP overrides --- */
body.page-template-page-pillar-php .site-header {
  background-color: var(--color-background-alt) !important;
}
body.page-template-page-pillar-php .main-navigation,
body.page-template-page-pillar-php .main-navigation ul ul {
  background-color: var(--color-background-alt) !important;
}
body.page-template-page-pillar-php .main-navigation .main-nav ul li a {
  color: var(--color-primary) !important;
}
body.page-template-page-pillar-php .main-navigation .main-nav ul li:not([class*="current-menu-"]):hover > a {
  color: var(--color-accent) !important;
}
body.page-template-page-pillar-php .main-navigation .main-nav ul li[class*="current-menu-"] > a {
  color: var(--color-accent) !important;
}
body.page-template-page-pillar-php.separate-containers .inside-article {
  background-color: transparent !important;
  padding: 0 !important;
  margin: 0 !important;
  max-width: none !important;
}
body.page-template-page-pillar-php .site-content {
  max-width: none;
  display: block !important;
  padding: 0 !important;
}

/* ============================================================
   HERO
   ============================================================ */
.pillar-hero {
  background-color: var(--color-background-alt);
  padding: 96px 0 64px;
}
.pillar-hero__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-element);
}
.pillar-hero__eyebrow {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 16px 0;
}
.pillar-hero__title {
  color: var(--color-primary);
  margin: 0;
}
.pillar-hero__sub {
  font-family: 'Inter', sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.8;
  max-width: 600px;
  margin: 20px 0 0 0;
}

/* ============================================================
   META BAR
   ============================================================ */
.pillar-meta {
  background-color: var(--color-background-alt);
  padding: 0 0 32px;
}
.pillar-meta__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-element) 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.pillar-meta__item {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  color: var(--color-text);
  opacity: 0.6;
}
.pillar-meta__sep {
  font-size: 12px;
  color: var(--color-text);
  opacity: 0.3;
}
.pillar-meta__cat {
  color: var(--color-accent);
  opacity: 1;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ============================================================
   TOC + CONTENT LAYOUT
   ============================================================ */
.pillar-body {
  background-color: var(--color-background);
  padding: var(--space-section) 0;
}
.pillar-body__inner {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 var(--space-element);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 64px;
  align-items: start;
}

/* --- TOC sidebar --- */
.pillar-toc {
  position: sticky;
  top: 96px;
}
.pillar-toc__toggle {
  display: none;
}
.pillar-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pillar-toc__list li {
  margin: 0 0 16px 0;
}
.pillar-toc__list li:last-child {
  margin-bottom: 0;
}
.pillar-toc__list a {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text);
  opacity: 0.55;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
  display: block;
}
.pillar-toc__list a:hover {
  color: var(--color-primary);
  opacity: 1;
}
.pillar-toc__list a.is-active {
  color: var(--color-accent);
  opacity: 1;
}

/* --- Main content --- */
.pillar-content {
  max-width: 720px;
}
.pillar-content h2 {
  font-family: 'Fraunces', serif;
  font-size: 32px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin: 56px 0 24px 0;
  scroll-margin-top: 96px;
}
.pillar-content h2:first-child {
  margin-top: 0;
}
.pillar-content h3 {
  font-family: 'Fraunces', serif;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-primary);
  margin: 40px 0 16px 0;
}
.pillar-content p {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 20px 0;
}
.pillar-content p:last-child {
  margin-bottom: 0;
}
.pillar-content strong {
  font-weight: 600;
  color: var(--color-primary);
}
.pillar-content ul,
.pillar-content ol {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 20px 0;
  padding-left: 24px;
}
.pillar-content li {
  margin-bottom: 8px;
}
.pillar-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.pillar-content a:hover {
  color: var(--color-primary);
}

/* ============================================================
   RELATED ARTICLES
   ============================================================ */
.pillar-related {
  background-color: var(--color-background);
  padding: var(--space-section) 0;
  border-top: 1px solid var(--color-border);
}
.pillar-related__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-element);
}
.pillar-related__eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 12px 0;
}
.pillar-related__headline {
  color: var(--color-primary);
  margin: 0 0 48px 0;
}
.pillar-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* ============================================================
   PRODUCT RECOMMENDATION BAND
   ============================================================ */
.pillar-products {
  background-color: var(--color-background-alt);
  padding: var(--space-section) 0;
}
.pillar-products__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-element);
}
.pillar-products__eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 16px 0;
}
.pillar-products__narrative {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-text);
  max-width: 600px;
  margin: 0 0 40px 0;
}
.pillar-products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   CLOSING CTA
   ============================================================ */
.pillar-cta {
  background-color: var(--color-background);
  padding: var(--space-section) 0;
  text-align: center;
}
.pillar-cta__inner {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 var(--space-element);
}
.pillar-cta__eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 16px 0;
}
.pillar-cta__headline {
  color: var(--color-primary);
  margin: 0;
}
.pillar-cta__sub {
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.8;
  margin: 16px 0 32px 0;
}
.pillar-cta__button {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 14px 32px;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-primary);
  text-decoration: none;
  transition: background-color 0.2s ease;
}
.pillar-cta__button:hover {
  background-color: #0f1c1e;
  color: var(--color-text-inverse);
}

/* ============================================================
   GSAP initial states
   ============================================================ */
.pillar-hero__eyebrow,
.pillar-hero__title,
.pillar-hero__sub {
  opacity: 0;
}

/* ============================================================
   MOBILE (<1024px for TOC, <768px for layout)
   ============================================================ */
@media (max-width: 1023px) {
  .pillar-body__inner {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .pillar-toc {
    position: relative;
    top: auto;
    margin-bottom: 40px;
    border: 1px solid var(--color-border);
    border-radius: 0;
  }
  .pillar-toc__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 20px;
    background: var(--color-background-alt);
    border: none;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    cursor: pointer;
  }
  .pillar-toc__toggle-arrow {
    transition: transform 0.2s ease;
  }
  .pillar-toc__toggle[aria-expanded="true"] .pillar-toc__toggle-arrow {
    transform: rotate(180deg);
  }
  .pillar-toc__list {
    display: none;
    padding: 0 20px 20px;
    background: var(--color-background-alt);
  }
  .pillar-toc__list.is-open {
    display: block;
  }
}

@media (max-width: 768px) {
  .pillar-hero {
    padding: 64px 0 48px;
  }
  .pillar-hero__title {
    font-size: 36px;
  }
  .pillar-hero__sub {
    font-size: 16px;
  }
  .pillar-content h2 {
    font-size: 26px;
    margin-top: 40px;
  }
  .pillar-content h3 {
    font-size: 19px;
  }
  .pillar-related__grid {
    grid-template-columns: 1fr;
    gap: var(--space-block);
  }
  .pillar-products__grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .pillar-products__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ============================================================
   TABLET (~768–1024px)
   ============================================================ */
@media (min-width: 769px) and (max-width: 1023px) {
  .pillar-related__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Science cross-link */
.pillar-science-link {
  background-color: var(--color-background-alt);
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}
.pillar-science-link__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-element);
}
.pillar-science-link p {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.7;
  margin: 0;
}
.pillar-science-link a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.pillar-science-link a:hover {
  color: var(--color-primary);
}