/* NeurAstra stealth site
   Tokens from the NeurAstra design system.
   Light: warm paper substrate. Dark: anchored neutral. Province Blue is the agent. */

:root {
  color-scheme: light dark;

  /* Foundation */
  --surface-canvas: #EFECE4;
  --surface-1: #FBF9F4;
  --surface-2: #FFFDF8;
  --surface-3: #E8E1CF;
  --surface-hover: #F4F1EA;
  --border-subtle: #E5DECB;
  --border-default: #DDD6C5;
  --border-strong: #C8BFA8;

  /* Text */
  --text-primary: #1F1B14;
  --text-body: #3D362C;
  --text-secondary: #5C544A;
  --text-tertiary: #8C8478;

  /* Accent: Province Blue */
  --accent: #3F7FA8;
  --accent-hover: #316790;
  --accent-subtle: #D8E5EE;
  --accent-border: #95B5CA;

  /* Buttons */
  --button-primary-bg: var(--accent);
  --button-primary-bg-hover: var(--accent-hover);
  --button-primary-text: #FFFDF8;
  --button-secondary-text: var(--text-primary);
  --button-secondary-border: var(--border-default);
  --button-secondary-bg-hover: var(--surface-hover);

  --serif: Georgia, "Times New Roman", serif;
  --sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-canvas: #131313;
    --surface-1: #1E1E1E;
    --surface-2: #292929;
    --surface-3: #393939;
    --surface-hover: #161616;
    --border-subtle: #2C2C2C;
    --border-default: #393939;
    --border-strong: #4D4D4D;

    --text-primary: #EAEAEA;
    --text-body: #B8B8B8;
    --text-secondary: #9F9F9F;
    --text-tertiary: #6C6C6C;

    --accent: #94B3C8;
    --accent-hover: #AAC3D4;
    --accent-subtle: #2A3A45;
    --accent-border: #3A4D58;

    --button-primary-text: #1F1B14;
  }
}

/* Per-mode logo swap */
.logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
  .logo-light { display: none; }
  .logo-dark { display: block; }
}

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

body {
  background: var(--surface-canvas);
  color: var(--text-primary);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap {
  width: min(1080px, 92%);
  margin: 0 auto;
}

a { color: var(--accent); }

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border-default);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo { display: flex; align-items: center; }

.nav-logo img { height: 42px; }

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 400;
  transition: color 100ms ease-out;
}

.nav-links a:hover { color: var(--text-primary); }

.nav-links a.active {
  color: var(--accent);
  font-weight: 500;
}

/* ---------- Shared ---------- */
main { flex: 1; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

h1, h2 { font-family: var(--serif); font-weight: 500; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 100ms ease-out, border-color 100ms ease-out;
}

.btn-primary {
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
}

.btn-primary:hover { background: var(--button-primary-bg-hover); }

.btn-secondary {
  background: transparent;
  border: 1px solid var(--button-secondary-border);
  color: var(--button-secondary-text);
}

.btn-secondary:hover {
  background: var(--button-secondary-bg-hover);
  border-color: var(--border-strong);
}

/* ---------- Hero ---------- */
.hero {
  padding: 108px 0 88px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
}

.hero h1 {
  font-size: clamp(28px, 4.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  max-width: 40ch;
  color: var(--text-primary);
}

.hero h1 em { font-style: italic; }

.hero .subline {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--text-secondary);
}

.hero .lede {
  max-width: 62ch;
  color: var(--text-body);
  font-size: 15px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

/* ---------- Sections ---------- */
section { padding: 68px 0; }

.section-head {
  max-width: 62ch;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 28px;
  line-height: 1.25;
  margin-bottom: 12px;
}

.section-head p { color: var(--text-body); }

.divider { border: none; border-top: 1px solid var(--border-subtle); }

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 28px 26px;
}

.card .num {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
}

.card h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
}

.card p { color: var(--text-body); font-size: 13px; }

/* Stealth band */
.stealth-band {
  text-align: center;
  padding: 84px 0;
}

.stealth-band .mark {
  height: 72px;
  margin: 0 auto 26px;
}

.stealth-band h2 {
  font-size: 28px;
  max-width: 30ch;
  margin: 0 auto 12px;
}

.stealth-band p {
  color: var(--text-body);
  max-width: 54ch;
  margin: 0 auto 28px;
}

/* ---------- Page hero (careers, contact) ---------- */
.page-hero {
  padding: 88px 0 44px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.page-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.18;
  max-width: 24ch;
}

.page-hero .lede { color: var(--text-body); max-width: 64ch; font-size: 15px; }

/* ---------- Careers ---------- */
.roles { display: flex; flex-direction: column; gap: 12px; }

.role {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 22px 26px;
  transition: background-color 100ms ease-out;
}

.role:hover { background: var(--surface-hover); }

.role h3 {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 3px;
}

.role .meta { color: var(--text-tertiary); font-size: 11px; }

.role a { flex-shrink: 0; }

.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.values div {
  border-left: 3px solid var(--border-strong);
  padding-left: 18px;
}

.values h3 {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.values p { color: var(--text-body); font-size: 13px; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.contact-card {
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  padding: 32px 28px;
}

.contact-card .label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.contact-card h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
}

.contact-card p { color: var(--text-body); font-size: 13px; margin-bottom: 20px; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border-default);
  background: var(--surface-1);
  padding: 32px 0;
  margin-top: 40px;
}

.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.foot img { height: 24px; }

.foot p { color: var(--text-tertiary); font-size: 11px; }

.foot .foot-links { display: flex; gap: 22px; }

.foot .foot-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
}

.foot .foot-links a:hover { color: var(--text-primary); }

@media (max-width: 640px) {
  .nav-links { gap: 18px; }
  .hero { padding: 64px 0 56px; }
  .role { flex-direction: column; align-items: flex-start; }
}