:root {
  --bg:          #0e1117;
  --surface:     #131820;
  --card:        #1a2030;
  --ink:         #e2e8f2;
  --muted:       #7a8fa6;
  --faint:       #3d5068;
  --line:        #1f2d3d;
  --line-strong: #2a3d52;
  --accent:      #34d399;
  --accent-soft: #071e12;
  --accent-dim:  rgba(52, 211, 153, 0.12);
  --serif: Georgia, "Times New Roman", serif;
  --mono:  ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --max-w: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--serif); line-height: 1.6; }
::selection { background: var(--accent-soft); color: var(--accent); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

/* ── NAV ─────────────────────────────────────────── */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 36px; height: 56px;
  background: rgba(14, 17, 23, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-brand {
  display: flex; align-items: center; gap: 9px;
  font-family: var(--serif); font-weight: 600; font-size: 15px;
  color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.nav-icon {
  width: 26px; height: 26px;
  border-radius: 4px;
  background: #fff;
  flex-shrink: 0;
  display: block;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-family: var(--mono); font-size: 12px;
  color: var(--muted); text-decoration: none; letter-spacing: 0.02em;
  transition: color 0.12s;
}
.nav-links a:hover { color: var(--accent); }
.nav-external { color: var(--faint) !important; }
@media (max-width: 600px) {
  .site-nav { padding: 0 18px; }
  .nav-links { gap: 18px; }
}

/* ── HERO ────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  padding: 100px 36px 84px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 55% 70% at 80% 50%, rgba(52, 211, 153, 0.07) 0%, transparent 65%),
    linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
.hero-inner {
  max-width: var(--max-w); margin: 0 auto;
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 60px;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 18px;
}
.hero-title {
  font-size: clamp(42px, 5.5vw, 70px);
  font-weight: 700; line-height: 1.07;
  letter-spacing: -0.035em;
  margin: 0 0 22px; color: var(--ink);
}
.hero-sub {
  font-size: clamp(15px, 1.8vw, 17px);
  color: var(--muted); line-height: 1.65;
  margin: 0 0 36px; max-width: 480px;
}
.hero-acts { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 44px; }

.btn-primary {
  display: inline-block; font-family: var(--mono); font-size: 13px; font-weight: 500;
  padding: 12px 22px; background: var(--accent); color: #071e12;
  text-decoration: none; border-radius: 4px; letter-spacing: 0.01em;
  transition: opacity 0.13s;
}
.btn-primary:hover { opacity: 0.86; }
.btn-ghost {
  display: inline-block; font-family: var(--mono); font-size: 13px;
  padding: 12px 22px; border: 1px solid var(--line-strong);
  color: var(--muted); text-decoration: none; border-radius: 4px;
  transition: border-color 0.13s, color 0.13s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-stats {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  font-family: var(--mono); font-size: 11px; color: var(--faint);
}
.hero-stats strong { color: var(--muted); font-weight: 600; }
.stat-sep { color: var(--line-strong); }

/* Hero visual — icon_full in white card */
.hero-visual {
  display: flex; align-items: center; justify-content: center;
}
.hero-icon-wrap {
  background: #ffffff;
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  max-width: 320px; width: 100%;
}
.hero-icon-wrap img {
  width: 100%; height: auto; display: block;
}

@media (max-width: 860px) {
  .hero { padding: 72px 18px 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-icon-wrap { max-width: 220px; padding: 20px; border-radius: 14px; margin: 0 auto; }
  .hero-acts { flex-direction: column; }
  .btn-primary, .btn-ghost { text-align: center; }
}

/* ── PERSONAL STATEMENT ──────────────────────────── */
.statement-section {
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.statement-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.statement-img {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}
.statement-img a {
  display: block; position: absolute; inset: 0;
}
.statement-img img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; object-position: center top;
  display: block;
}
.statement-text {
  padding: 64px 52px 64px 48px;
  display: flex; flex-direction: column; gap: 18px;
  justify-content: center;
}
.statement-text .section-label { margin: 0; }
.statement-quote {
  font-family: var(--serif);
  font-size: clamp(17px, 2vw, 21px);
  font-style: italic;
  font-weight: 400;
  line-height: 1.55;
  color: var(--ink);
  margin: 4px 0 0;
  padding: 0 0 0 20px;
  border-left: 3px solid var(--accent);
}
.statement-text p {
  font-size: 14.5px; color: var(--muted);
  line-height: 1.7; margin: 0;
}
.statement-text a { color: var(--accent); text-decoration: none; }
.statement-text a:hover { text-decoration: underline; }

@media (max-width: 860px) {
  .statement-inner { grid-template-columns: 1fr; }
  .statement-img { min-height: 260px; position: relative; }
  .statement-img img { position: relative; inset: auto; height: 260px; }
  .statement-text { padding: 40px 18px; }
}

/* ── GROUPS ──────────────────────────────────────── */
.groups-section {
  padding: 72px 36px;
  border-bottom: 1px solid var(--line);
}
.groups-inner, .how-inner { max-width: var(--max-w); margin: 0 auto; }

.section-label {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--faint); margin: 0 0 32px;
}

.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.group-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 6px; overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color 0.14s, transform 0.14s;
}
.group-card:not(.soon):hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.group-card.soon { opacity: 0.38; pointer-events: none; }

/* Card thumbnail image */
.group-card-img-wrap { display: block; flex-shrink: 0; }
.group-card-img {
  height: 155px; overflow: hidden; flex-shrink: 0;
  margin: 0; border-radius: 0;
  position: relative;
}
.group-card-img img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform 0.3s ease;
}
.group-card:not(.soon):hover .group-card-img img { transform: scale(1.03); }

/* Card text area */
.group-card-text {
  padding: 20px 26px 26px;
  display: flex; flex-direction: column; gap: 14px;
  text-decoration: none; color: var(--ink); flex: 1;
}

.group-card-head {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 12px;
}
.group-name {
  font-family: var(--serif); font-size: 20px;
  font-weight: 600; letter-spacing: -0.02em;
  line-height: 1.2;
}
.group-count {
  font-family: var(--mono); font-size: 11px;
  color: var(--accent); flex-shrink: 0; margin-top: 3px;
}
.group-badge {
  font-family: var(--mono); font-size: 10px;
  color: var(--faint); border: 1px solid var(--line-strong);
  border-radius: 3px; padding: 2px 7px;
  letter-spacing: 0.05em; flex-shrink: 0; margin-top: 3px;
}
.group-desc {
  font-size: 13.5px; color: var(--muted);
  line-height: 1.58; margin: 0; flex: 1;
}
.group-link {
  font-family: var(--mono); font-size: 11.5px;
  color: var(--accent); letter-spacing: 0.02em;
}

@media (max-width: 600px) {
  .groups-section { padding: 52px 18px; }
}

/* ── HOW IT WORKS ────────────────────────────────── */
.how-section { padding: 72px 36px 88px; }

.how-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 48px 40px;
  margin-bottom: 44px;
}
.step { display: flex; flex-direction: column; gap: 10px; }
.step-num {
  font-family: var(--mono); font-size: 11px;
  color: var(--accent); letter-spacing: 0.1em;
}
.step h3 {
  font-family: var(--serif); font-size: 17px;
  font-weight: 600; margin: 0; letter-spacing: -0.01em;
}
.step p {
  font-size: 14px; color: var(--muted);
  line-height: 1.6; margin: 0;
}
.how-footer {
  font-family: var(--mono); font-size: 13px;
  color: var(--muted); margin: 0;
  padding-top: 28px; border-top: 1px solid var(--line);
}
.how-footer a { color: var(--accent); text-decoration: none; }
.how-footer a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .how-section { padding: 52px 18px 72px; }
}

/* ── PAGE CREDITS ────────────────────────────────── */
.page-credits {
  border-top: 1px solid var(--line);
  padding: 20px 36px;
}
.credits-inner { max-width: var(--max-w); margin: 0 auto; }
.credits-heading {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--faint); margin: 0 0 8px;
}
.credits-line {
  font-family: var(--mono); font-size: 11px;
  color: var(--faint); line-height: 1.8; margin: 0;
}
.credits-line a { color: var(--faint); text-decoration: underline; }
.credits-line a:hover { color: var(--muted); }
@media (max-width: 600px) { .page-credits { padding: 18px; } }

/* ── FOOTER ──────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 36px;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center;
  justify-content: space-between; gap: 16px;
  font-family: var(--mono); font-size: 11px; color: var(--faint);
}
.footer-inner a { color: var(--faint); text-decoration: none; transition: color 0.12s; }
.footer-inner a:hover { color: var(--accent); }
@media (max-width: 600px) {
  .site-footer { padding: 20px 18px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ── GENE PAGE (shared shell) ────────────────────── */
.gene-header {
  padding: 56px 36px 44px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
.gene-header-inner { max-width: var(--max-w); margin: 0 auto; }
.gene-breadcrumb {
  font-family: var(--mono); font-size: 11px; color: var(--faint);
  margin: 0 0 20px;
}
.gene-breadcrumb a { color: var(--muted); text-decoration: none; }
.gene-breadcrumb a:hover { color: var(--accent); }
.gene-title {
  font-size: clamp(34px, 5vw, 58px); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 10px;
}
.gene-fullname {
  font-size: 15px; color: var(--muted); margin: 0 0 22px; font-style: italic;
}
.gene-desc {
  font-size: 16px; color: var(--muted); line-height: 1.65;
  max-width: 640px; margin: 0 0 28px;
}
.gene-meta-row {
  display: flex; gap: 24px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11.5px; color: var(--faint);
}
.gene-meta-row strong { color: var(--muted); }

.gene-body { max-width: var(--max-w); margin: 0 auto; padding: 48px 36px 80px; }
@media (max-width: 600px) {
  .gene-header { padding: 40px 18px 32px; }
  .gene-body { padding: 32px 18px 60px; }
}

/* Studies */
.studies-section { margin-bottom: 56px; }
.studies-heading {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--faint); margin: 0 0 24px;
  padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.study-card {
  border-left: 2px solid var(--line-strong);
  padding: 18px 0 18px 22px;
  margin-bottom: 24px;
}
.study-card:last-child { margin-bottom: 0; }
.study-snippet {
  font-style: italic; color: var(--muted);
  font-size: 14.5px; line-height: 1.68; margin: 0 0 10px;
}
.study-meta {
  font-family: var(--mono); font-size: 11px; color: var(--faint);
}
.study-meta a { color: var(--accent); text-decoration: none; }
.study-meta a:hover { text-decoration: underline; }

/* Alerts */
.alerts-section { margin-bottom: 40px; }
.alert-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 5px; padding: 16px 18px;
  margin-bottom: 10px; display: flex; flex-direction: column; gap: 6px;
}
.alert-card.unread { border-color: var(--accent-soft); }
.alert-title { font-size: 15px; font-weight: 500; line-height: 1.3; }
.alert-title a { color: var(--ink); text-decoration: none; }
.alert-title a:hover { color: var(--accent); }
.alert-authors { font-size: 12.5px; color: var(--accent); font-style: italic; }
.alert-snippet { font-size: 13px; color: var(--muted); line-height: 1.55; }
.alert-foot {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: 10.5px; color: var(--faint); margin-top: 4px;
}
.unread-dot {
  display: inline-block; width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%; margin-right: 6px;
  flex-shrink: 0;
}

/* Group page */
.group-header {
  padding: 56px 36px 44px; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
.group-header-inner { max-width: var(--max-w); margin: 0 auto; }
.group-page-title {
  font-size: clamp(32px, 5vw, 54px); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 14px;
}
.group-body { max-width: var(--max-w); margin: 0 auto; padding: 40px 36px 80px; }
@media (max-width: 600px) {
  .group-header { padding: 40px 18px 32px; }
  .group-body { padding: 28px 18px 60px; }
}

.gene-list { display: flex; flex-direction: column; gap: 0; }
.gene-row {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none; color: var(--ink);
  transition: background 0.1s;
}
.gene-row:first-child { border-top: 1px solid var(--line); }
.gene-row:hover { background: var(--surface); margin: 0 -12px; padding-left: 12px; padding-right: 12px; }
.gene-row-name {
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  color: var(--accent); letter-spacing: 0.02em;
}
.gene-row-full { font-size: 13.5px; color: var(--muted); font-style: italic; }
.gene-row-count {
  font-family: var(--mono); font-size: 11px; color: var(--faint);
  white-space: nowrap;
}
@media (max-width: 600px) {
  .gene-row { grid-template-columns: 100px 1fr; }
  .gene-row-count { display: none; }
}

/* ── SNP BLOCKS & FREQUENCY TABLE ───────────────── */
.snp-block {
  border-left: 2px solid var(--line-strong);
  padding: 14px 0 14px 20px;
  margin-bottom: 20px;
}
.snp-block:last-child { margin-bottom: 0; }
.snp-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  margin-bottom: 6px;
}
.snp-meta-item {
  font-family: var(--mono); font-size: 11px; color: var(--faint);
}
.freq-table {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
  font-family: var(--mono); font-size: 11.5px;
}
.freq-row {
  display: grid;
  grid-template-columns: 140px 1fr 28px;
  align-items: center;
  gap: 12px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.freq-row:last-child { border-bottom: none; }
.freq-row--total {
  background: var(--surface);
  color: var(--ink);
  font-weight: 500;
}
.freq-pop { color: var(--faint); font-size: 10.5px; letter-spacing: 0.03em; }
.freq-row--total .freq-pop { color: var(--muted); }
.freq-data { font-size: 11px; }
.freq-link {
  color: var(--faint); text-decoration: none; font-size: 13px;
  text-align: right; display: block;
  transition: color 0.12s;
}
.freq-link:hover { color: var(--accent); }
@media (max-width: 600px) {
  .freq-row { grid-template-columns: 110px 1fr 22px; font-size: 10px; }
}

/* ── GENE PAGE EXTRAS ────────────────────────────── */
.gene-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.gene-tag {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.05em;
  color: var(--accent); border: 1px solid rgba(52,211,153,0.3);
  border-radius: 3px; padding: 3px 9px; text-decoration: none;
  transition: background 0.12s;
}
.gene-tag:hover { background: var(--accent-dim); }

.gene-section { margin-bottom: 52px; }
.gene-section:last-child { margin-bottom: 0; }

.section-count {
  font-family: var(--mono); font-size: 10px; font-weight: 400;
  color: var(--faint); margin-left: 10px; letter-spacing: 0;
}

.unread-tag {
  display: inline-block;
  font-family: var(--mono); font-size: 10px;
  color: var(--accent); background: var(--accent-dim);
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: 3px; padding: 1px 7px;
  margin-left: 8px; vertical-align: middle;
}

.empty-state {
  font-family: var(--mono); font-size: 12px; color: var(--faint);
  padding: 24px 0; margin: 0;
}

/* SNP table */
.snp-table-wrap { overflow-x: auto; margin-bottom: 8px; }
.snp-table {
  width: 100%; border-collapse: collapse;
  font-family: var(--mono); font-size: 12px;
}
.snp-table th {
  text-align: left; padding: 8px 12px;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--faint); border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.snp-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--line);
  color: var(--muted); vertical-align: top;
}
.snp-table tr:last-child td { border-bottom: none; }
.snp-table tr:hover td { background: var(--surface); }
.rsid-link { color: var(--accent); text-decoration: none; }
.rsid-link:hover { text-decoration: underline; }
.snp-genotype { color: var(--ink); font-weight: 600; }
.snp-notes { font-size: 11px; color: var(--faint); max-width: 260px; }

.snp-status {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.04em;
  border-radius: 3px; padding: 2px 7px; white-space: nowrap;
}
.snp-status--good     { color: var(--accent);  background: var(--accent-dim); }
.snp-status--bad      { color: #f87171;         background: rgba(248,113,113,0.1); }
.snp-status--neutral  { color: var(--muted);    background: var(--card); }
.snp-status--pending  { color: var(--faint);    background: transparent; border: 1px solid var(--line); }

/* Group page extras */
.group-page-desc {
  font-size: 15px; color: var(--muted); line-height: 1.65;
  max-width: 620px; margin: 0 0 16px;
}
.group-stats {
  font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin: 0;
}

/* Basics page */
.basics-hero {
  padding: 64px 36px 52px; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
.basics-hero-inner { max-width: 760px; margin: 0 auto; }
.basics-body { max-width: 760px; margin: 0 auto; padding: 52px 36px 88px; }
.basics-body h2 {
  font-size: 24px; font-weight: 600; letter-spacing: -0.02em;
  margin: 48px 0 14px; padding-top: 48px; border-top: 1px solid var(--line);
}
.basics-body h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.basics-body p { font-size: 15.5px; color: var(--muted); line-height: 1.72; margin: 0 0 18px; }
.basics-body strong { color: var(--ink); }
.callout {
  background: var(--card); border-left: 3px solid var(--accent);
  border-radius: 0 5px 5px 0; padding: 16px 20px;
  margin: 24px 0; font-size: 14px; color: var(--muted); line-height: 1.65;
}
@media (max-width: 600px) {
  .basics-hero { padding: 44px 18px 36px; }
  .basics-body { padding: 36px 18px 64px; }
}

/* Admin */
.admin-body { max-width: 860px; margin: 0 auto; padding: 40px 36px 80px; }
@media (max-width: 600px) { .admin-body { padding: 28px 18px 60px; } }

/* Shared toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 110; font-family: var(--mono); font-size: 12px;
  color: var(--bg); background: var(--accent); border-radius: 4px;
  padding: 10px 18px; box-shadow: 0 8px 28px rgba(0,0,0,.4);
  pointer-events: none; white-space: nowrap;
}
.toast.err { background: #3d2028; color: var(--ink); }
.toast[hidden] { display: none; }