/* Elpis Biosciences — Base Styles */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

/* ─── Nav ─── */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  padding: 0 var(--pad);
  justify-content: space-between;
}

.nav-lockup {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.nav-lockup img { display: block; filter: brightness(0); }
.nav-lockup-text { display: flex; flex-direction: column; }
.nav-name {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.05;
  letter-spacing: -0.3px;
}
.nav-sub {
  font-family: var(--mono);
  font-size: 8px;
  color: var(--muted);
  letter-spacing: 2.2px;
  text-transform: uppercase;
  margin-top: 1px;
}

.nav-links {
  display: flex;
  gap: 26px;
  font-family: var(--sans);
  font-size: 13px;
  align-items: center;
}
.nav-links a {
  color: var(--muted);
  font-weight: 400;
  padding-bottom: 1px;
}
.nav-links a:hover { color: var(--forest); }
.nav-links a.active {
  color: var(--forest);
  font-weight: 600;
  border-bottom: 1.5px solid var(--forest);
}

/* ─── Footer ─── */

.footer {
  background: var(--warm);
  border-top: 1px solid var(--rule);
}
.footer-inner {
  padding: 36px var(--pad) 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-lockup {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  text-decoration: none;
}
.footer-lockup img { display: block; filter: brightness(0); margin-top: 2px; }
.footer-lockup-text { display: flex; flex-direction: column; gap: 2px; }
.footer-name {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.05;
}
.footer-sub {
  font-family: var(--mono);
  font-size: 8px;
  color: var(--muted);
  letter-spacing: 2.2px;
  text-transform: uppercase;
}
.footer-tagline {
  font-family: var(--serif);
  font-size: 12px;
  font-style: italic;
  color: var(--faint);
}
.footer-links {
  display: flex;
  gap: 22px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
}
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--forest); }
.footer-bottom {
  padding: 10px var(--pad) 18px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
}

/* ─── RUO Banner ─── */

.ruo-banner {
  background: var(--forest);
  color: rgba(255,255,255,0.8);
  padding: 9px var(--pad);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.2px;
}

/* ─── Section label ─── */

.section-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
}
.section-label.center { text-align: center; }
.section-label.muted { color: var(--muted); }

/* ─── Prose helpers ─── */

.prose-h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 40px;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}
.prose-p {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 16px;
}

/* ─── Content page layout ─── */

.content-page {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 64px var(--pad) 80px;
}
.content-page h1 {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -1.5px;
  margin-bottom: 14px;
  color: var(--ink);
}
.content-page .sub {
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 48px;
  line-height: 1.6;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 36px;
}

/* ─── Buttons ─── */

.btn-primary {
  display: inline-block;
  background: var(--forest);
  color: var(--bg);
  border: none;
  border-radius: 5px;
  padding: 14px 32px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary:hover { opacity: 0.92; }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--muted);
  border: 1.5px solid var(--border);
  border-radius: 5px;
  padding: 13px 24px;
  font-family: var(--sans);
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.btn-secondary:hover { border-color: var(--muted); }

/* ─── Blockquote ─── */

.pullquote {
  border-left: 3px solid var(--terra);
  padding-left: 24px;
  margin: 24px 0;
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  color: var(--ink);
  line-height: 1.55;
}

/* ─── Criteria / inclusion cards ─── */

.criteria-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 18px 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.criteria-bar {
  width: 3px;
  background: var(--forest);
  border-radius: 2px;
  align-self: stretch;
  flex-shrink: 0;
}
.criteria-title {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}
.criteria-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Exclusion rows ─── */

.exclusion-row {
  padding: 14px 20px;
  background: var(--warm);
  border: 1px solid var(--rule);
  border-radius: 7px;
  display: flex;
  gap: 14px;
  margin-bottom: 10px;
}
.exclusion-x {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--terra);
  margin-top: 1px;
  flex-shrink: 0;
}
.exclusion-title {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--terra);
  font-weight: 500;
  margin-bottom: 4px;
}
.exclusion-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Belief / value cards ─── */

.belief-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 16px 20px;
  display: flex;
  gap: 14px;
  margin-bottom: 12px;
}
.belief-diamond {
  color: var(--forest);
  font-family: var(--mono);
  font-size: 14px;
  margin-top: 2px;
  flex-shrink: 0;
}
.belief-title {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 5px;
}
.belief-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Value rows ─── */

.value-row {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.value-row:first-child { border-top: 1px solid var(--rule); }
.value-label {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  min-width: 180px;
  padding-top: 1px;
}
.value-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.75;
}

/* ─── FAQ accordion ─── */

.faq-item {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 8px;
}
.faq-question {
  padding: 16px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 16px;
}
.faq-question-text {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.faq-chevron {
  color: var(--muted);
  font-size: 12px;
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 22px 18px;
  border-top: 1px solid var(--rule);
}
.faq-item.open .faq-answer { display: block; }
.faq-answer p {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--muted);
  line-height: 1.85;
  margin-top: 14px;
}

/* ─── Privacy steps ─── */

.privacy-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 14px 18px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  margin-bottom: 12px;
}
.privacy-step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--forest);
  color: #fff;
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.privacy-step-title {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}
.privacy-step-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

.privacy-check {
  display: flex;
  gap: 12px;
  padding: 10px 16px;
  background: var(--warm);
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.privacy-check .check { color: var(--forest); font-weight: 700; }

/* ─── Confidence badges ─── */

.conf-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
.conf-card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 18px 18px 20px;
}
.conf-badge {
  font-family: var(--mono);
  font-size: 9px;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.conf-body {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Utility ─── */

.hidden { display: none !important; }

@media (max-width: 768px) {
  :root { --pad: 20px; }
  .nav-links { display: none; }
  .content-page h1 { font-size: 32px; }
  .conf-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 20px; }
}