/* ===========================================================
   VaxDataCheck — Design Tokens
   Concept: an evidence log / inspector's record, not a debate
   forum. Cool paper ground, carbon ink type, four verdict
   colors that function like stamped classifications on a
   document. Signature element: the rotated double-ruled
   "stamp" badge used for every verdict.
   =========================================================== */

:root {
  /* Color */
  --paper: #F2F4F1;
  --paper-alt: #E7EBE6;
  --paper-deep: #DEE3DD;
  --ink: #16241F;
  --ink-soft: #45524B;
  --ink-faint: #6E7A73;
  --signal: #2B5FA3;
  --signal-soft: #E4ECF5;
  --verified: #1F7A5C;
  --verified-soft: #E1F0EA;
  --partial: #A8721F;
  --partial-soft: #F5EBDA;
  --unsupported: #A63F2C;
  --unsupported-soft: #F5E3DE;
  --unverifiable: #5B6169;
  --unverifiable-soft: #E9EAEC;
  --line: rgba(22, 36, 31, 0.16);
  --line-soft: rgba(22, 36, 31, 0.09);

  /* Type */
  --font-display: "IBM Plex Serif", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --measure: 68ch;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--signal); }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2.5px solid var(--signal);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--ink-faint);
  display: inline-block;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 20;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
  gap: 24px;
}
.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.logo .dot { color: var(--signal); }
.logo small {
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin-left: 10px;
  font-weight: 400;
  text-transform: uppercase;
  display: none;
}
@media (min-width: 640px) { .logo small { display: inline; } }

.site-nav { display: flex; gap: 28px; align-items: center; }
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a.current { color: var(--ink); border-bottom: 1.5px solid var(--signal); padding-bottom: 3px; }
.nav-hide-mobile { display: none; }
@media (min-width: 760px) { .nav-hide-mobile { display: flex; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 11px 18px;
  border-radius: 3px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-solid {
  background: var(--ink);
  color: var(--paper);
}
.btn-solid:hover { background: var(--signal); border-color: var(--signal); color: #fff; }

/* ---------- Stamp (signature element) ---------- */
.stamp {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4em 0.85em;
  border-radius: 3px;
  border: 1.5px solid currentColor;
  outline: 1px solid currentColor;
  outline-offset: 3px;
  transform: rotate(-2deg);
  white-space: nowrap;
}
.stamp::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}
.stamp--verified { color: var(--verified); }
.stamp--partial { color: var(--partial); transform: rotate(1.5deg); }
.stamp--unsupported { color: var(--unsupported); transform: rotate(-1deg); }
.stamp--unverifiable { color: var(--unverifiable); transform: rotate(2deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  gap: 48px;
  align-items: start;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 64px; }
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 4.4vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 18px 0 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--signal);
}
.hero p.lede {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Featured claim demo card */
.demo-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 26px 26px 22px;
  box-shadow: 0 1px 0 var(--line-soft);
}
.demo-card .demo-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 14px;
  display: block;
}
.demo-card .claim-text {
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.42;
  margin: 0 0 18px;
  padding-left: 16px;
  border-left: 3px solid var(--line);
}
.demo-card .verdict-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.demo-card .verdict-note {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 16px;
}
.demo-card .meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-faint);
}
.demo-card .meta-row a { color: var(--signal); text-decoration: none; font-weight: 500; }
.demo-card .meta-row a:hover { text-decoration: underline; }

/* ---------- Legend strip ---------- */
.legend {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}
.legend-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 760px) { .legend-grid { grid-template-columns: repeat(4, 1fr); } }
.legend-item { font-size: 0.86rem; color: var(--ink-soft); }
.legend-item .stamp { margin-bottom: 10px; }
.legend-item p { margin: 0; }

/* ---------- Section headers ---------- */
.section { padding: 60px 0; border-bottom: 1px solid var(--line); }
.section.no-border { border-bottom: none; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 1.9rem);
  margin: 10px 0 0;
  font-weight: 600;
}
.section-head .view-all { font-family: var(--font-mono); font-size: 0.82rem; text-decoration: none; }
.section-note {
  font-size: 0.86rem;
  color: var(--ink-faint);
  max-width: 60ch;
  margin: -18px 0 32px;
}

/* ---------- Claim check cards ---------- */
.card-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(22,36,31,0.08); }
.card .card-claim {
  font-family: var(--font-display);
  font-size: 1.02rem;
  line-height: 1.4;
  margin: 0;
  flex-grow: 1;
}
.card .card-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

/* ---------- Methodology teaser ---------- */
.method-steps {
  display: grid;
  gap: 26px;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) { .method-steps { grid-template-columns: repeat(4, 1fr); } }
.method-step .num {
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 0.82rem;
  margin-bottom: 10px;
  display: block;
}
.method-step h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 8px;
  font-weight: 600;
}
.method-step p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- Split row (explainers / numbers) ---------- */
.split-row {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) { .split-row { grid-template-columns: 1fr 1fr; } }
.pillar-card {
  background: var(--paper-alt);
  border-radius: 6px;
  padding: 26px;
}
.pillar-card .eyebrow { margin-bottom: 12px; }
.pillar-card h3 { font-family: var(--font-display); margin: 0 0 10px; font-size: 1.3rem; }
.pillar-card p { color: var(--ink-soft); margin: 0 0 16px; font-size: 0.95rem; }
.pillar-card a { font-family: var(--font-mono); font-size: 0.82rem; text-decoration: none; font-weight: 500; }

/* ---------- Newsletter ---------- */
.newsletter {
  background: var(--ink);
  color: var(--paper);
  padding: 54px 0;
}
.newsletter .wrap { display: grid; gap: 24px; align-items: center; }
@media (min-width: 760px) { .newsletter .wrap { grid-template-columns: 1.2fr 1fr; } }
.newsletter h2 { font-family: var(--font-display); font-size: 1.6rem; margin: 12px 0 10px; }
.newsletter p { color: #C7D0CA; margin: 0; max-width: 44ch; }
.newsletter .eyebrow { color: #8FA098; }
.newsletter .eyebrow::before { background: #8FA098; }
.nl-form { display: flex; gap: 10px; flex-wrap: wrap; }
.nl-form input {
  flex: 1;
  min-width: 200px;
  background: #1F332B;
  border: 1px solid #34473D;
  color: var(--paper);
  padding: 12px 14px;
  border-radius: 3px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.nl-form input::placeholder { color: #8FA098; }
.nl-form .btn-solid { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.nl-form .btn-solid:hover { background: var(--signal); color: #fff; border-color: var(--signal); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 46px 0 40px;
  font-size: 0.86rem;
  color: var(--ink-faint);
}
.footer-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
  margin-bottom: 30px;
}
@media (min-width: 760px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 12px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-grid a { color: var(--ink-faint); text-decoration: none; }
.footer-grid a:hover { color: var(--ink); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Generic content page (methodology, article) ---------- */
.page-hero {
  padding: 52px 0 40px;
  border-bottom: 1px solid var(--line);
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.7rem);
  margin: 16px 0 14px;
  font-weight: 600;
  max-width: 22ch;
}
.page-hero p.lede { max-width: var(--measure); color: var(--ink-soft); font-size: 1.05rem; margin: 0; }

.prose { max-width: var(--measure); }
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 42px 0 14px;
  font-weight: 600;
}
.prose h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 30px 0 10px;
  font-weight: 600;
}
.prose p { margin: 0 0 18px; color: var(--ink-soft); }
.prose ul, .prose ol { color: var(--ink-soft); padding-left: 22px; margin: 0 0 18px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--ink); }
.callout {
  background: var(--signal-soft);
  border-left: 3px solid var(--signal);
  padding: 16px 20px;
  border-radius: 0 4px 4px 0;
  font-size: 0.94rem;
  color: var(--ink);
  margin: 24px 0;
}
.callout strong { display: block; margin-bottom: 4px; font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; }

.verdict-scale-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin: 24px 0 36px;
}
@media (min-width: 700px) { .verdict-scale-grid { grid-template-columns: repeat(2, 1fr); } }
.verdict-scale-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
  background: #fff;
}
.verdict-scale-item .stamp { margin-bottom: 12px; }
.verdict-scale-item p { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }

.source-tier {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}
.source-tier:first-of-type { border-top: none; }
.source-tier .tier-rank {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--signal);
  flex: none;
  width: 90px;
  padding-top: 2px;
}
.source-tier h4 { margin: 0 0 6px; font-family: var(--font-display); font-size: 1.02rem; }
.source-tier p { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }

/* ---------- Article (claim check) page ---------- */
.article-meta-bar {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-faint);
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}
.verdict-banner {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px 26px;
  margin: 30px 0 40px;
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
}
.verdict-banner .vb-left { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.verdict-banner .vb-summary { font-size: 0.94rem; color: var(--ink-soft); max-width: 46ch; margin: 0; }

.sources-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sources-list li {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 14px 16px;
  font-size: 0.9rem;
}
.sources-list .src-tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
  display: block;
  margin-bottom: 6px;
}
.sources-list a { color: var(--ink); font-weight: 500; }

.changelog {
  font-size: 0.88rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
  margin-top: 44px;
  padding-top: 20px;
}
.changelog code {
  font-family: var(--font-mono);
  background: var(--paper-alt);
  padding: 2px 6px;
  border-radius: 3px;
}