/* ═══════════════════════════════════════════════════════════════
   RESEARCH-INDEX.CSS — Shared styles for research hub/index pages
   Covers: research/index.html
   ═══════════════════════════════════════════════════════════════ */

/* Reset + scroll-behavior now in global.css */

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-weight: 300;
  overflow-x: hidden;
  cursor: default;
  line-height: 1.7;
}

/* NOISE OVERLAY */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
}

/* ── COMPLIANCE BANNER ── */
.compliance-banner {
  background: #2a0a15;
  color: var(--white);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 8px 48px;
  text-align: center;
  border-bottom: 1px solid rgba(219,38,108,0.3);
  position: relative;
  top: auto;
  z-index: auto;
}
.compliance-banner span { color: var(--pink-text); font-weight: 500; margin-left: 8px; }

.desktop-sticky-cta,
.mobile-sticky-cta {
  display: none !important;
}

body.has-sticky-cta {
  padding-bottom: 0 !important;
}

/* ── NAV ── */

/* ── CONTAINER ── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 48px;
}

/* ── PAGE HEADER ── */
.page-header {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.page-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--pink-text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.page-tag::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--pink);
}
.page-title {
  font-family: var(--serif);
  font-size: var(--type-page-h1);
  font-weight: 400;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 16px;
}
.page-title em {
  font-style: italic;
  color: var(--pink-text);
}
.page-subtitle {
  font-family: var(--sans);
  font-size: 18px;
  color: var(--gray);
  max-width: 640px;
  line-height: 1.7;
}
.page-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gray2);
  letter-spacing: .1em;
  margin-top: 16px;
}
.page-count strong {
  color: var(--pink-text);
  font-weight: 500;
}

/* ── ANVISA CALLOUT (PT) ── */
.anvisa-callout {
  background: rgba(255, 165, 0, 0.06);
  border: 1px solid rgba(255, 165, 0, 0.2);
  border-left: 3px solid #f0a030;
  padding: 24px 28px;
  margin-bottom: 48px;
}
.anvisa-callout strong { color: #f0a030; }
.anvisa-callout p { font-size: 13px; color: var(--gray2); line-height: 1.7; margin: 0; }

/* ── FEATURED HERO CARD ── */
.featured-card {
  display: block;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-left: 3px solid var(--pink);
  text-decoration: none;
  color: inherit;
  margin-bottom: 56px;
  transition: border-color .3s, background .3s;
}
.featured-card:hover {
  border-color: var(--pink-text);
  background: var(--deep);
}
.featured-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--pink-text);
  margin-bottom: 12px;
  display: block;
}
.featured-title {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 10px;
  line-height: 1.3;
}
.featured-desc {
  font-size: 17px;
  color: var(--gray);
  line-height: 1.7;
  max-width: 640px;
}
.featured-meta {
  display: flex;
  gap: 20px;
  margin-top: 14px;
  align-items: center;
}
.featured-meta-item {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray2);
}
.featured-meta-item span { color: var(--gray); }
.featured-arrow {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--pink-text);
  margin-left: auto;
  transition: transform .2s;
}
.featured-card:hover .featured-arrow { transform: translateX(4px); }

/* ── TOOLS BAR ── */
.tools-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}
.tool-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border2);
  text-decoration: none;
  color: inherit;
  transition: border-color .3s, background .3s;
}
.tool-card:hover {
  border-color: var(--pink-text);
  background: var(--deep);
}
.tool-card-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--pink-text);
  display: block;
  margin-bottom: 4px;
}
.tool-card-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--white);
}
.tool-card-arrow {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--pink-text);
  transition: transform .2s;
}
.tool-card:hover .tool-card-arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .tools-bar { grid-template-columns: 1fr; }
  .tool-card { padding: 16px 20px; }
  .tool-card-title { font-size: 16px; }
}

/* ── CLUSTER NAV ── */
.cluster-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.cluster-nav a {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid var(--border);
  transition: color .2s, border-color .2s, background .2s;
}
.cluster-nav a:visited { color: var(--gray); }
.cluster-nav a:hover {
  color: var(--pink-text);
  border-color: var(--pink-text);
  background: var(--pink-glow);
}

/* ── CLUSTER SECTION ── */
.cluster {
  margin-bottom: 56px;
}
.cluster-header {
  margin-bottom: 8px;
}
.cluster-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--pink-text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.cluster-tag::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--pink);
}
.cluster-title {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 300;
  color: var(--white);
  margin-bottom: 6px;
}
.cluster-desc {
  font-size: 17px;
  color: var(--gray);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* ── ARTICLE GRID ── */
.articles-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.article-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: background .2s;
  align-items: start;
}
.article-card:first-child {
  padding-top: 0;
}
.article-card:hover {
  background: var(--pink-glow);
  margin: 0 -24px;
  padding-left: 24px;
  padding-right: 24px;
}
.article-content {
  flex: 1;
}
.article-category {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--pink-soft);
  padding: 4px 10px;
  border-radius: 2px;
  display: inline-block;
  margin-bottom: 10px;
}
.article-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 6px;
  line-height: 1.3;
}
.article-desc {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
  max-width: 640px;
}
.article-meta {
  display: flex;
  gap: 20px;
  margin-top: 10px;
}
.article-meta-item {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray2);
}
.article-meta-item span {
  color: var(--gray);
}
.article-arrow {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--pink-text);
  opacity: 0;
  transition: opacity .2s, transform .2s;
  display: inline-block;
  margin-left: 8px;
}
.article-card:hover .article-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ── LIBRARY FOOTNOTE ── */
.library-footnote {
  text-align: center;
  padding: 48px 0;
  border-top: 1px solid var(--border);
  margin-top: 16px;
}
.library-footnote p {
  font-size: 17px;
  color: var(--gray);
}
.library-footnote a {
  color: var(--pink-text);
  text-decoration: none;
}
.library-footnote a:visited { color: var(--pink-text); }
.library-footnote a:hover { text-decoration: underline; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-logo {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gray);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-logo a { color: inherit; text-decoration: none; }
.footer-logo span { color: var(--pink-text); }
.footer-links {
  display: flex;
  gap: 12px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.02);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .15em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--gray2);
  text-decoration: none;
  transition: color .2s, border-color .2s, background .2s, transform .2s;
}
.footer-links a:visited { color: var(--gray2); }
.footer-links a:hover { color: var(--pink-text); border-color: var(--pink-text); background: var(--pink-soft); transform: translateY(-1px); }
.footer-social { display: flex; gap: 16px; align-items: center; }
.footer-social a { color: var(--gray2); transition: color .2s; display: flex; align-items: center; }
.footer-social a:visited { color: var(--gray2); }
.footer-social a:hover { color: var(--pink-text); }
.footer-ruo {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--gray2);
  letter-spacing: .1em;
}

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s, border-color .3s, background .3s;
  z-index: 900;
  text-decoration: none;
  color: inherit;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover {
  border-color: var(--pink-text);
  background: rgba(219,38,108,0.08);
}
.back-to-top svg {
  width: 18px;
  height: 18px;
  stroke: var(--gray);
  transition: stroke .3s;
}
.back-to-top:hover svg { stroke: var(--pink); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  body::before {
    display: none;
  }

  .container { padding: 0 20px; }
  .page-header { padding: 36px 0 24px; margin-bottom: 24px; }
  .page-title { font-size: 32px; }
  .page-subtitle { font-size: 16px; }
  .featured-card { padding: 24px; margin-bottom: 32px; }
  .featured-title { font-size: 22px; }
  .cluster-title { font-size: 22px; }
  .article-title { font-size: 18px; }
  .article-card:hover { margin: 0 -12px; padding-left: 12px; padding-right: 12px; }
  footer { padding: 32px 20px; flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
  .tools-bar { grid-template-columns: 1fr; gap: 12px; margin-bottom: 28px; }
  .cluster-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin: 0 -20px 28px;
    padding: 0 52px 14px 20px;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }
  .cluster-nav::-webkit-scrollbar { display: none; }
  .cluster-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-height: 40px;
    padding: 0 14px;
    font-size: 9px;
    scroll-snap-align: start;
  }
  .anvisa-callout { padding: 16px 20px; }
  .back-to-top { bottom: 24px; right: 24px; width: 40px; height: 40px; }

  /* Push back-to-top above sticky CTA bar */
  body.has-sticky-cta .back-to-top { bottom: 80px; }

  /* Compliance banner — reduce side padding */
  .compliance-banner { padding: 8px 20px; }

  /* Content overflow — prevent long words from causing horizontal scroll */
  .page-subtitle,
  .cluster-desc,
  .article-desc {
    overflow-wrap: break-word;
  }
}

@media (max-width: 480px) {
  .page-title { font-size: 26px; }
  .featured-title { font-size: 20px; }
  .article-title { font-size: 16px; }
  .cluster-title { font-size: 20px; }
  .cluster-nav a { min-height: 44px; padding: 0 16px; }
}

/* ── RESEARCH SEARCH ── */
.research-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface, #141418);
  border: 1px solid var(--border, #2a2a32);
  border-radius: 6px;
  padding: 10px 16px;
  margin: 0 0 20px;
  transition: border-color 0.2s;
}
.research-search:focus-within {
  border-color: var(--pink, #db266c);
}
.research-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text, #e8e8ed);
  font-family: var(--sans, 'Outfit', sans-serif);
  font-size: 16px;
}
.research-search input::placeholder {
  color: var(--muted, #666);
}
.research-search input:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 2px;
}
.hub-card.search-hidden,
.article-card.search-hidden {
  display: none !important;
}
.lib-category.search-hidden,
.cluster.search-hidden,
.featured-card.search-hidden,
.tools-bar.search-hidden,
section.search-hidden {
  display: none !important;
}
.search-no-results {
  text-align: center;
  color: var(--muted, #666);
  font-size: 14px;
  padding: 40px 0;
  display: none;
}

/* ═══════════════════════════════════════════════
 *  Research Hub 2026 Visual Pass
 * ═══════════════════════════════════════════════ */
body {
  background:
    radial-gradient(circle at 8% 0%, rgba(219, 38, 108, 0.16), transparent 34%),
    radial-gradient(circle at 90% 100%, rgba(219, 38, 108, 0.10), transparent 34%),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(135deg, #080808 0%, #0d0b0c 48%, #180812 100%);
  background-size: auto, auto, 72px 72px, 72px 72px, auto;
}

.page-header {
  position: relative;
  border-bottom-color: rgba(255,255,255,0.09);
}

.page-header::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,90,158,0.62), transparent);
  opacity: 0.75;
}

.featured-card,
.tool-card,
.cluster-nav a,
.article-card,
.research-search {
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.052), rgba(255,255,255,0.018)),
    rgba(8, 8, 8, 0.9);
  border-color: rgba(255,255,255,0.105);
  box-shadow: 0 24px 70px rgba(0,0,0,0.22);
  /* backdrop-filter removed: re-composites its backdrop every scrolled frame (scroll stutter); near-opaque background instead. */
}

.featured-card,
.tool-card,
.article-card {
  position: relative;
  overflow: hidden;
  transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.featured-card::before,
.tool-card::before,
.article-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,90,158,0.82), transparent);
  opacity: 0;
  transition: opacity .2s ease;
}

.featured-card:hover,
.tool-card:hover,
.article-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255,90,158,0.46);
  background:
    linear-gradient(180deg, rgba(219,38,108,0.08), rgba(255,255,255,0.02)),
    rgba(8, 8, 8, 0.84);
  box-shadow: 0 30px 88px rgba(219,38,108,0.16);
}

.featured-card:hover::before,
.tool-card:hover::before,
.article-card:hover::before {
  opacity: 1;
}

.cluster-nav {
  border-bottom-color: rgba(255,255,255,0.09);
}

.cluster-nav a:hover,
.cluster-nav a.active {
  border-color: rgba(255,90,158,0.46);
  background: rgba(219,38,108,0.12);
  color: #fff;
}

.research-search:focus-within {
  border-color: rgba(255,90,158,0.62);
  box-shadow: 0 0 0 3px rgba(219,38,108,0.14), 0 24px 70px rgba(0,0,0,0.22);
}