/*
Theme Name:   Astra Child — RNA Labs
Template:     astra
Version:      1.9.0
Description:  RNA Labs custom child theme
*/

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:            #f4f2ee;
  --bg2:           #faf9f7;
  --bg3:           #ece9e3;
  --bg4:           #e2ddd6;
  --white:         #ffffff;
  --border:        rgba(0,0,0,0.09);
  --border2:       rgba(0,0,0,0.15);
  --text:          #1e1c18;
  --muted:         #6e6b64;
  --muted2:        #a8a49c;
  --accent:        #2c2a26;
  --accent2:       #4a4640;
  --accent-dim:    rgba(44,42,38,0.07);
  --accent-border: rgba(44,42,38,0.2);
  --gold:          #a07840;
  --gold-dim:      rgba(160,120,64,0.08);
  --gold-border:   rgba(160,120,64,0.25);
  --radius:        6px;
  --radius-lg:     12px;
}

html, body {
  background: var(--bg) !important;
  color: var(--text) !important;
  font-family: 'Inter', sans-serif !important;
  font-size: 14px !important;
  line-height: 1.7 !important;
}

h1,h2,h3,h4,h5,h6 {
  font-family: 'Cormorant Garamond', serif !important;
  color: var(--text) !important;
  letter-spacing: -0.01em !important;
}

a { color: var(--accent); transition: color 0.2s; }
a:hover { color: var(--gold); }

/* ── HEADER ── */
#masthead, .site-header, .ast-primary-header-bar {
  background: var(--white) !important;
  border-bottom: 1px solid var(--border) !important;
  box-shadow: 0 1px 8px rgba(0,0,0,0.05) !important;
}
.site-title a, .ast-site-title {
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 700 !important;
  font-size: 26px !important;
  color: var(--text) !important;
  letter-spacing: 0.02em !important;
}
.ast-primary-nav a, .main-navigation a, #site-navigation a {
  font-family: 'Inter', sans-serif !important;
  font-size: 11px !important;
  letter-spacing: 0.09em !important;
  text-transform: uppercase !important;
  color: var(--muted) !important;
  font-weight: 500 !important;
}
.ast-primary-nav a:hover, .main-navigation a:hover { color: var(--text) !important; }

/* ── CONTENT ── */
#primary, .site-content, .content-area, .woocommerce-page, .woocommerce {
  background: var(--bg) !important;
}

.woocommerce-products-header__title, .page-title, h1.entry-title {
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 600 !important;
  font-size: 38px !important;
  color: var(--text) !important;
  letter-spacing: -0.02em !important;
  margin-bottom: 0.4rem !important;
}

.woocommerce-result-count {
  color: var(--muted2) !important;
  font-size: 11px !important;
  letter-spacing: 0.04em !important;
}

.woocommerce-ordering select {
  background: var(--white) !important;
  border: 1px solid var(--border2) !important;
  color: var(--text) !important;
  border-radius: var(--radius) !important;
  font-family: 'Inter', sans-serif !important;
  font-size: 12px !important;
  padding: 7px 14px !important;
}

/* ── RESEARCH NOTICE ── */
.rna-notice {
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  padding: 10px 18px;
  margin-bottom: 1.5rem;
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.07em;
  text-align: center;
  font-weight: 500;
}

/* ── CATEGORY TABS ── */
.rna-cat-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 2rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  width: fit-content;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.rna-cat-tab {
  display: inline-block;
  padding: 9px 20px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-right: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.15s;
  background: var(--white);
}
.rna-cat-tab:last-child { border-right: none; }
.rna-cat-tab:hover { background: var(--bg3); color: var(--text); }
.rna-cat-tab.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* ── PRODUCT GRID ── */
ul.products {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 14px !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  margin: 0 !important;
  list-style: none !important;
}

ul.products li.product {
  background: var(--white) !important;
  padding: 1.2rem !important;
  margin: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  transition: box-shadow 0.2s, transform 0.2s !important;
  border-radius: var(--radius-lg) !important;
  border: 1px solid var(--border) !important;
  float: none !important;
  width: auto !important;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05) !important;
}
ul.products li.product:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.10) !important;
  transform: translateY(-2px) !important;
}

/* Stretch link to fill card */
ul.products li.product > a.woocommerce-loop-product__link {
  display: flex !important;
  flex-direction: column !important;
  flex: 1 !important;
  text-decoration: none !important;
}

/* Product image */
ul.products li.product img {
  border-radius: var(--radius) !important;
  border: 1px solid var(--border) !important;
  background: var(--bg3) !important;
  width: 100% !important;
  height: auto !important;
  aspect-ratio: 1 !important;
  object-fit: cover !important;
  margin-bottom: 0.8rem !important;
}

/* SKU badge */
.rna-sku-badge {
  display: inline-block;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted2);
  background: var(--bg3);
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid var(--border);
  margin-bottom: 5px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
}

/* Product title */
ul.products li.product .woocommerce-loop-product__title {
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 600 !important;
  font-size: 17px !important;
  color: var(--text) !important;
  line-height: 1.3 !important;
  padding: 0 !important;
  margin: 2px 0 6px !important;
  letter-spacing: -0.01em !important;
}

/* Description */
.rna-product-desc {
  font-size: 11.5px !important;
  color: var(--muted) !important;
  line-height: 1.75 !important;
  font-weight: 300 !important;
  margin-bottom: 0.8rem !important;
  flex: 1 !important;
  font-family: 'Inter', sans-serif !important;
}

/* Price */
ul.products li.product .price {
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 700 !important;
  font-size: 22px !important;
  color: var(--text) !important;
  margin-bottom: 0.7rem !important;
  margin-top: auto !important;
  letter-spacing: -0.01em !important;
}

/* Add to cart */
ul.products li.product .button,
.woocommerce a.button,
.woocommerce button.button {
  background: var(--accent-dim) !important;
  color: var(--accent) !important;
  border: 1px solid var(--accent-border) !important;
  border-radius: var(--radius) !important;
  font-family: 'Inter', sans-serif !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  letter-spacing: 0.09em !important;
  text-transform: uppercase !important;
  padding: 9px 16px !important;
  transition: all 0.2s !important;
  box-shadow: none !important;
  width: 100% !important;
  text-align: center !important;
}
ul.products li.product .button:hover,
.woocommerce a.button:hover,
.woocommerce button.button:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

/* Primary buttons */
.woocommerce button.button.alt,
.woocommerce input.button.alt,
.woocommerce #payment #place_order,
.woocommerce-cart .wc-proceed-to-checkout a.checkout-button {
  background: var(--accent) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600 !important;
}
.woocommerce button.button.alt:hover,
.woocommerce-cart .wc-proceed-to-checkout a.checkout-button:hover {
  background: var(--accent2) !important;
}

/* ── SINGLE PRODUCT ── */
.single-product .product_title {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 36px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  letter-spacing: -0.02em !important;
}
.single-product .price {
  color: var(--text) !important;
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 28px !important;
  font-weight: 700 !important;
}
.single-product .woocommerce-product-details__short-description p {
  color: var(--muted) !important;
  font-size: 14px !important;
  line-height: 1.9 !important;
  font-weight: 300 !important;
}

/* ── TABS ── */
.woocommerce-tabs ul.tabs {
  background: transparent !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 0 !important;
}
.woocommerce-tabs ul.tabs li {
  background: var(--bg3) !important;
  border: 1px solid var(--border) !important;
  border-bottom: none !important;
  border-radius: var(--radius) var(--radius) 0 0 !important;
}
.woocommerce-tabs ul.tabs li.active {
  background: var(--white) !important;
  border-bottom-color: var(--white) !important;
}
.woocommerce-tabs ul.tabs li a { color: var(--muted) !important; font-family: 'Inter', sans-serif !important; font-size: 12px !important; }
.woocommerce-tabs ul.tabs li.active a { color: var(--text) !important; font-weight: 600 !important; }
.woocommerce-tabs .panel {
  background: var(--white) !important;
  border: 1px solid var(--border) !important;
  padding: 2rem !important;
  color: var(--muted) !important;
  font-size: 13.5px !important;
  line-height: 1.85 !important;
}

/* Calculator button */
.rna-calc-btn {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}
.rna-calc-btn:hover { background: var(--accent); color: #fff; }

/* ── CART & CHECKOUT ── */
.woocommerce-cart table.cart,
.woocommerce-cart .cart_totals {
  background: var(--white) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
}
.woocommerce-cart table.cart th,
.woocommerce-cart table.cart td {
  border-color: var(--border) !important;
  color: var(--text) !important;
  background: transparent !important;
}
.woocommerce form .form-row input.input-text,
.woocommerce form .form-row textarea,
.woocommerce form .form-row select {
  background: var(--white) !important;
  border: 1px solid var(--border2) !important;
  color: var(--text) !important;
  border-radius: var(--radius) !important;
  font-family: 'Inter', sans-serif !important;
}
.woocommerce form .form-row input.input-text:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 2px var(--accent-dim) !important;
  outline: none !important;
}
.woocommerce form .form-row label { color: var(--muted) !important; font-size: 12px !important; font-family: 'Inter', sans-serif !important; }

/* ── PAYMENT ── */
.woocommerce-checkout #payment {
  background: var(--white) !important;
  border-radius: var(--radius-lg) !important;
  border: 1px solid var(--border) !important;
}
.woocommerce-checkout #payment ul.payment_methods { border-bottom: 1px solid var(--border) !important; }
.woocommerce-checkout #payment ul.payment_methods li { color: var(--text) !important; }
.woocommerce-checkout #payment div.payment_box { background: var(--bg3) !important; color: var(--muted) !important; }

/* ── NOTICES ── */
.woocommerce-message, .woocommerce-info {
  background: var(--gold-dim) !important;
  border-top-color: var(--gold) !important;
  color: var(--text) !important;
}
.woocommerce-error {
  background: rgba(160,50,50,0.06) !important;
  border-top-color: #a03232 !important;
  color: var(--text) !important;
}

/* ── PAGINATION ── */
.woocommerce-pagination a, .woocommerce-pagination span {
  background: var(--white) !important;
  border: 1px solid var(--border) !important;
  color: var(--muted) !important;
  border-radius: var(--radius) !important;
  font-family: 'Inter', sans-serif !important;
}
.woocommerce-pagination .current, .woocommerce-pagination a:hover {
  background: var(--accent) !important;
  color: #fff !important;
  border-color: var(--accent) !important;
}

/* ── MISC ── */
.onsale { background: var(--gold) !important; color: #fff !important; border-radius: var(--radius) !important; font-size: 10px !important; font-weight: 700 !important; }
.star-rating span::before { color: var(--gold) !important; }
.woocommerce input[type=number].qty {
  background: var(--white) !important;
  border: 1px solid var(--border2) !important;
  color: var(--text) !important;
  border-radius: var(--radius) !important;
}
.woocommerce-breadcrumb { color: var(--muted2) !important; font-size: 11px !important; font-family: 'Inter', sans-serif !important; }
.woocommerce-breadcrumb a { color: var(--muted) !important; }
.woocommerce-breadcrumb a:hover { color: var(--text) !important; }

/* ── FOOTER ── */
#colophon, .site-footer, .ast-footer-main-area {
  background: var(--white) !important;
  border-top: 1px solid var(--border) !important;
  color: var(--muted) !important;
}
.site-footer a { color: var(--muted) !important; }
.site-footer a:hover { color: var(--text) !important; }

.rna-footer-disclaimer {
  background: var(--gold-dim);
  border-top: 1px solid var(--gold-border);
  padding: 1.2rem 2rem;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.9;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.03em;
}
.rna-footer-disclaimer strong { color: var(--gold); font-weight: 600; }

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  ul.products { grid-template-columns: repeat(3, 1fr) !important; }
}
@media (max-width: 768px) {
  ul.products { grid-template-columns: repeat(2, 1fr) !important; }
  .rna-cat-tabs { width: 100%; overflow-x: auto; }
  .rna-cat-tab { padding: 8px 12px; font-size: 10px; }
}
@media (max-width: 480px) {
  ul.products { grid-template-columns: 1fr !important; }
}

/* ── LEGAL NOTICES ── */
.rna-legal-box {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.5rem 1.8rem;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.9;
  font-family: 'Inter', sans-serif;
}
.rna-legal-box h4 {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 18px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  margin-bottom: 0.8rem !important;
}
.rna-legal-box p { margin-bottom: 0.8rem; }
.rna-legal-box p:last-child { margin-bottom: 0; }
.rna-legal-box strong { color: var(--text); font-weight: 600; }

.rna-shop-legal {
  margin-top: 2.5rem;
  padding: 1.4rem 1.8rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.9;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.01em;
}
.rna-shop-legal strong {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.rna-checkout-legal {
  margin-bottom: 1.5rem;
  padding: 1.2rem 1.6rem;
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.85;
  font-family: 'Inter', sans-serif;
}
.rna-checkout-legal strong {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
}

/* ── RESEARCH OVERVIEW TAB ── */
.rna-research-tab {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.rna-research-section {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.rna-research-section:last-of-type {
  border-bottom: none;
}

.rna-research-section h4 {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 18px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  margin-bottom: 0.6rem !important;
  letter-spacing: -0.01em !important;
}

.rna-research-section p {
  font-size: 13.5px !important;
  color: var(--muted) !important;
  line-height: 1.9 !important;
  font-weight: 300 !important;
  font-family: 'Inter', sans-serif !important;
}

.rna-research-dosing {
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem;
}

.rna-research-dosing strong {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.rna-research-dosing p {
  font-size: 12.5px !important;
  color: var(--muted) !important;
  line-height: 1.8 !important;
  font-weight: 300 !important;
  margin: 0 !important;
}

/* ── PUBMED RESEARCH TAB ── */
.rna-pubmed-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.rna-pubmed-badge {
  background: #2c6fad;
  color: white;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 3px;
}
.rna-pubmed-meta {
  font-size: 11px;
  color: var(--muted2);
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.02em;
}

.rna-abstract-card {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--border);
}
.rna-abstract-card:last-of-type { border-bottom: none; }

.rna-abstract-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 6px;
}
.rna-abstract-journal {
  font-size: 11px;
  font-style: italic;
  color: var(--muted);
  font-family: 'Inter', sans-serif;
}
.rna-abstract-year {
  font-size: 11px;
  color: var(--muted2);
  background: var(--bg3);
  padding: 1px 8px;
  border-radius: 2px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
}

.rna-abstract-title {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 17px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  line-height: 1.35 !important;
  margin-bottom: 5px !important;
  letter-spacing: -0.01em !important;
}

.rna-abstract-authors {
  font-size: 11.5px !important;
  color: var(--muted) !important;
  font-style: italic !important;
  margin-bottom: 8px !important;
  font-family: 'Inter', sans-serif !important;
}

.rna-abstract-text {
  font-size: 13px !important;
  color: var(--muted) !important;
  line-height: 1.85 !important;
  font-weight: 300 !important;
  font-family: 'Inter', sans-serif !important;
  margin-bottom: 10px !important;
}

.rna-expand-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.rna-expand-btn:hover { color: var(--gold); }

.rna-pubmed-link {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: #2c6fad;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(44,111,173,0.3);
  padding-bottom: 1px;
  transition: all 0.2s;
}
.rna-pubmed-link:hover {
  color: #1a4f8a;
  border-color: #1a4f8a;
}

.rna-pubmed-footer {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.rna-pubmed-search-btn {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  transition: all 0.2s;
}
.rna-pubmed-search-btn:hover { background: var(--accent); color: #fff; }

/* ── SITE TITLE STYLING ── */
.site-title a, .ast-site-title {
  font-family: 'Cormorant Garamond', serif !important;
  font-weight: 700 !important;
  font-size: 32px !important;
  color: var(--text) !important;
  letter-spacing: 0.01em !important;
  line-height: 1 !important;
}

/* Hide default page title on shop page */
.woocommerce-products-header { display: none !important; }
.woocommerce-products-header__title { display: none !important; }
.page-title { display: none !important; }


/* ── RNA LABS LOGO ── */
.rna-logo-rna {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 700;
  font-size: 34px;
  color: var(--text);
  letter-spacing: 0.04em;
  line-height: 1;
  display: inline-block;
}

.rna-logo-labs {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  display: inline-block;
  vertical-align: middle;
  margin-left: 6px;
  margin-bottom: 4px;
}

/* ── SHOP HERO BANNER ── */
.rna-hero-banner {
  position: relative;
  width: 100%;
  min-height: 160px;
  background: var(--text);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  padding: 2.5rem 3rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}

/* Decorative label colour blobs on right side */
.rna-hero-banner::before {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 320px;
  height: 320px;
  background: conic-gradient(
    from 0deg,
    rgba(200,32,32,0.3) 0deg 45deg,
    rgba(72,168,72,0.25) 45deg 90deg,
    rgba(104,64,184,0.3) 90deg 135deg,
    rgba(40,152,200,0.25) 135deg 180deg,
    rgba(232,192,32,0.3) 180deg 225deg,
    rgba(184,64,160,0.25) 225deg 270deg,
    rgba(56,88,200,0.3) 270deg 315deg,
    rgba(200,32,32,0.3) 315deg 360deg
  );
  border-radius: 50%;
  opacity: 0.5;
  filter: blur(40px);
  pointer-events: none;
}

/* Dark overlay to keep text readable */
.rna-hero-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(30,28,24,1) 45%, rgba(30,28,24,0.7) 75%, rgba(30,28,24,0.3) 100%);
  pointer-events: none;
}

.rna-hero-content {
  position: relative;
  z-index: 2;
}

.rna-hero-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 0.6rem;
}

.rna-hero-rna {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 700;
  font-size: 72px;
  color: #ffffff;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.rna-hero-labs {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500;
  font-size: 28px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.rna-hero-sub {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 300;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em;
  max-width: 560px;
  line-height: 1.7;
  text-transform: uppercase;
}

/* ── PRODUCT CARD WATERMARK ── */
ul.products li.product {
  position: relative;
  overflow: hidden;
}

ul.products li.product::before {
  content: 'RNA';
  position: absolute;
  bottom: -10px;
  right: -8px;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 700;
  font-size: 90px;
  color: var(--text);
  opacity: 0.03;
  line-height: 1;
  pointer-events: none;
  z-index: 0;
  letter-spacing: -0.02em;
}

ul.products li.product > * {
  position: relative;
  z-index: 1;
}

/* ── SINGLE PRODUCT BACKGROUND WATERMARK ── */
.single-product .product {
  position: relative;
  overflow: visible;
}

.single-product .product::before {
  content: 'RNA\ALABS';
  position: absolute;
  top: -30px;
  right: -40px;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 700;
  font-size: 160px;
  color: var(--text);
  opacity: 0.025;
  line-height: 0.9;
  pointer-events: none;
  z-index: 0;
  letter-spacing: -0.04em;
  white-space: pre;
}

/* ── HEADER LOGO AREA BACKGROUND ── */
.ast-site-identity {
  position: relative;
}

#masthead {
  background: var(--white) !important;
  position: relative;
  overflow: hidden;
}

#masthead::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -30px;
  width: 200px;
  height: 120px;
  background: radial-gradient(ellipse, rgba(160,120,64,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ── RESEARCH OVERVIEW TAB v2 ── */
.rna-research-tab { display: flex; flex-direction: column; gap: 0; }

.rna-research-intro {
  margin-bottom: 1.8rem;
}
.rna-research-intro p {
  font-size: 14.5px !important;
  color: var(--text) !important;
  line-height: 1.9 !important;
  font-weight: 300 !important;
  font-family: 'Inter', sans-serif !important;
}

.rna-research-struct {
  background: var(--bg3);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  margin-bottom: 1.8rem;
  border: 1px solid var(--border);
}
.rna-research-struct h4 {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.1em !important;
  color: var(--muted) !important;
  margin-bottom: 5px !important;
}
.rna-research-struct p {
  font-size: 12px !important;
  color: var(--muted) !important;
  font-family: 'Inter', sans-serif !important;
  line-height: 1.7 !important;
}

.rna-research-section {
  padding: 1.4rem 0;
  border-top: 1px solid var(--border);
}
.rna-research-section h4 {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 20px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  margin-bottom: 0.6rem !important;
  letter-spacing: -0.01em !important;
}
.rna-research-section p {
  font-size: 13.5px !important;
  color: var(--muted) !important;
  line-height: 1.9 !important;
  font-weight: 300 !important;
  font-family: 'Inter', sans-serif !important;
}

.rna-research-future {
  padding: 1.4rem 1.6rem;
  margin-top: 1rem;
  background: var(--gold-dim);
  border: 1px solid var(--gold-border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
}
.rna-research-future h4 {
  font-family: 'Cormorant Garamond', serif !important;
  font-size: 16px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  margin-bottom: 6px !important;
}
.rna-research-future p {
  font-size: 13px !important;
  color: var(--muted) !important;
  line-height: 1.85 !important;
  font-weight: 300 !important;
  font-family: 'Inter', sans-serif !important;
  margin: 0 !important;
}

.rna-pubmed-footer {
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}
.rna-pubmed-search-btn {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  transition: all 0.2s;
}
.rna-pubmed-search-btn:hover { background: var(--accent); color: #fff; }