/* ──────────────────────────────────────────────────────────────
   Product Description — "Research & Resources" — Figma 5339:31181
   Themed background, section header, 2-column intro (image + "What is X?"),
   accordion of research sections, FDA disclaimer, optional citations.
   ────────────────────────────────────────────────────────────── */

.product-description {
  --ivory-100: #fefefd;
  --theme-100: #e9edf6;
  --theme-300: #d3dbea;
  --theme-400: #b7c3e0;
  --theme-700: #626e8b;
  --theme-900: #313745;

  display: block;
  width: 100%;
  background: var(--theme-100);
  color: var(--theme-900);
  padding: 96px;
  box-sizing: border-box;
}

.product-description[data-theme="glacier"] {
  --theme-100: #e9edf6; --theme-300: #d3dbea; --theme-400: #b7c3e0;
  --theme-700: #626e8b; --theme-900: #313745;
}
.product-description[data-theme="moss"] {
  --theme-100: #eef1f0; --theme-300: #d5ddda; --theme-400: #c8d2ce;
  --theme-700: #737d79; --theme-900: #393e3c;
}
.product-description[data-theme="shale"] {
  --theme-100: #dddee2; --theme-300: #c0c2c9; --theme-400: #8d919e;
  --theme-700: #383c49; --theme-900: #1c1e24;
}
.product-description[data-theme="dune"] {
  --theme-100: #f8f6f3; --theme-300: #ede7df; --theme-400: #e8e0d8;
  --theme-700: #938b83; --theme-900: #494641;
}
.product-description[data-theme="canyon"] {
  --theme-100: #f7ece6; --theme-300: #ecd5c7; --theme-400: #e3bfad;
  --theme-700: #8e6a58; --theme-900: #47352c;
}

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

.product-description__inner {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 1728px;
  margin: 0 auto;
  align-items: center;
}

/* ── Section Header ──────────────────────────────────────── */
.product-description__header {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  text-align: center;
  max-width: 1248px;
  width: 100%;
}
.product-description__eyebrow {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 24px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--theme-700);
  margin: 0;
}
.product-description__heading {
  font-family: 'Conso Serif', Georgia, serif;
  font-weight: 400;
  font-size: 48px;
  line-height: 56px;
  color: var(--theme-900);
  margin: 0;
}

/* ── Main 2-column row: image + "What is X?" intro ──────── */
.product-description__row {
  display: flex;
  gap: 96px;
  align-items: center;
  width: 100%;
  max-width: 1248px;
}

.product-description__image {
  flex: 3 1 0;
  min-width: 0;
  aspect-ratio: 576 / 640;
  overflow: hidden;
  border-radius: 16px;
}
.product-description__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-description__content {
  flex: 4 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.product-description__what-is {
  font-family: 'Conso Serif', Georgia, serif;
  font-weight: 400;
  font-size: 24px;
  line-height: 32px;
  color: var(--theme-900);
  margin: 0;
}

.product-description__intro {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 24px;
  color: var(--theme-700);
}
.product-description__intro p { margin: 0 0 16px 0; }
.product-description__intro p:last-child { margin-bottom: 0; }

/* ── Accordion ──────────────────────────────────────────── */
.product-description__accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 1248px;
}

.product-description__item {
  background: var(--theme-300);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  transition: gap 0.2s ease;
}
.product-description__item.is-open { gap: 16px; }

.product-description__item-header {
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font: inherit;
  color: var(--theme-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  text-align: left;
}
.product-description__item-title {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 24px;
  flex: 1 1 auto;
  min-width: 0;
}
.product-description__item-icon {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--theme-900);
  transition: transform 0.2s ease;
}
.product-description__item.is-open .product-description__item-icon {
  transform: rotate(45deg);
}
.product-description__icon-v {
  transition: opacity 0.2s ease;
}

.product-description__item-body {
  display: none;
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 16px;
  line-height: 24px;
  color: var(--theme-700);
}
.product-description__item.is-open .product-description__item-body {
  display: block;
}
.product-description__item-body p { margin: 0 0 16px 0; }
.product-description__item-body p:last-child { margin-bottom: 0; }
.product-description__item-body ul,
.product-description__item-body ol {
  margin: 0 0 16px 24px;
  padding: 0;
}
.product-description__item-body ul:last-child,
.product-description__item-body ol:last-child { margin-bottom: 0; }
.product-description__item-body li { margin-bottom: 4px; }
.product-description__item-body strong { font-weight: 500; color: var(--theme-900); }

/* ── FDA / medical disclaimer ───────────────────────────── */
.product-description__disclaimer {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 14px;
  line-height: 24px;
  color: var(--theme-700);
  width: 100%;
  max-width: 1248px;
  text-align: center;
  padding: 16px 24px 0;
  margin: 0 auto;
}

/* ── Citations (legacy / optional) ──────────────────────── */
.product-description__citations {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 1248px;
  padding-top: 16px;
  border-top: 1px solid var(--theme-400);
}
.product-description__citations-label {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 400;
  font-size: 14px;
  line-height: 24px;
  color: var(--theme-900);
  margin: 0;
}
.product-description__citation {
  font-family: 'Lexend Deca', sans-serif;
  font-weight: 300;
  font-size: 14px;
  line-height: 20px;
  color: var(--theme-700);
  margin: 0;
}
.product-description__citation a {
  color: var(--theme-700);
  text-decoration: underline;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1200px) {
  .product-description { padding: 64px; }
  .product-description__inner { gap: 40px; }
  .product-description__row { gap: 64px; }
  .product-description__heading { font-size: 40px; line-height: 48px; }
}

@media (max-width: 900px) {
  .product-description { padding: 48px 24px; }
  .product-description__inner { gap: 32px; }
  .product-description__row {
    flex-direction: column;
    gap: 32px;
  }
  .product-description__image {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 12;
  }
  .product-description__content {
    flex: 0 0 auto;
    width: 100%;
  }
  .product-description__heading { font-size: 32px; line-height: 40px; }
  .product-description__what-is { font-size: 22px; line-height: 30px; }
}