/* ============================================================
   BOID LABS — styles (v3: pared back)
   ============================================================ */

:root {
  --bg: #0A0A0B;
  --rule: #1F1F22;
  --rule-2: #2A2A2E;
  --fg: #EDEDED;
  --fg-dim: #8A8A8A;
  --fg-mute: #5A5A5E;
  --accent: #FF5B1F;
  --container: 1200px;

  --f-display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --f-body: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { overflow-x: hidden; }

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

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

::selection { background: var(--accent); color: #000; }

/* ---------- Layout ---------- */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

section {
  padding: 120px 0;
  border-top: 1px solid var(--rule);
}

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
}

h2 {
  font-size: clamp(32px, 3.8vw, 52px);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  max-width: 22ch;
  text-wrap: balance;
  margin-bottom: 40px;
}

p { margin: 0 0 1em 0; }

.mono {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

/* ---------- Nav ---------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 32px;
}
.wordmark {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg);
}

.nav-links {
  display: flex; align-items: center; gap: 32px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.nav-links a { transition: color .15s ease; }
.nav-links a:hover { color: var(--fg); }

/* ---------- Email link (primary CTA pattern) ---------- */

.email-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--accent);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease;
}
.email-link:hover { border-bottom-color: var(--accent); }
.email-link .arrow { transition: transform .2s ease; }
.email-link:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 88vh;
  padding: 0;
  border-top: none;
  display: flex;
  align-items: center;
}
.hero-content {
  position: relative;
  width: 100%;
  padding: 160px 0 120px;
}
.hero .eyebrow { margin-bottom: 32px; }

.hero h1 {
  font-family: var(--f-display);
  font-size: clamp(44px, 7vw, 104px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 0 0 36px;
  text-transform: uppercase;
  font-weight: 700;
  max-width: 18ch;
}
.hero h1 .line { display: block; }
.hero h1 .amber { color: var(--accent); }

.hero-sub {
  max-width: 62ch;
  color: var(--fg-dim);
  font-size: 18px;
  line-height: 1.55;
  margin: 0 0 48px;
}

/* ---------- Thesis ---------- */

.thesis p {
  color: var(--fg-dim);
  font-size: 18px;
  line-height: 1.65;
  max-width: 62ch;
  margin-bottom: 1.2em;
}
.thesis p:last-child {
  color: var(--fg);
  font-family: var(--f-display);
  font-weight: 500;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  max-width: 42ch;
  margin-top: 48px;
}

/* ---------- Approach ---------- */

.approach-blocks {
  display: grid;
  gap: 36px;
  max-width: 780px;
  margin-bottom: 48px;
}
.approach-blocks .block {
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}
.approach-blocks .label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.approach-blocks p {
  color: var(--fg);
  font-size: 17px;
  line-height: 1.6;
  margin: 0;
  max-width: 68ch;
}
.approach-blocks p .lead {
  color: var(--fg);
  font-weight: 600;
}

/* ---------- Applications ---------- */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  margin-bottom: 32px;
}
.apps-grid .app {
  padding: 28px 28px 28px 0;
  border-right: 1px solid var(--rule);
}
.apps-grid .app:last-child { border-right: none; padding-right: 0; }
.apps-grid .app:not(:first-child) { padding-left: 28px; }
.apps-grid .app-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.apps-grid .app p {
  color: var(--fg);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
  max-width: 32ch;
}
.apps-foot {
  color: var(--fg-dim);
  font-size: 15px;
  max-width: 64ch;
  line-height: 1.6;
  margin-top: 24px;
}

@media (max-width: 900px) {
  .apps-grid { grid-template-columns: 1fr; }
  .apps-grid .app { border-right: none; border-bottom: 1px solid var(--rule); padding: 24px 0 !important; }
  .apps-grid .app:last-child { border-bottom: none; }
}

/* ---------- Team ---------- */

.team-lede {
  color: var(--fg-dim);
  font-size: 18px;
  max-width: 62ch;
  margin-bottom: 64px;
  line-height: 1.6;
}
.team-lede strong { color: var(--fg); font-weight: 600; }

.founders {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.founder {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
.founder .name {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.005em;
  color: var(--fg);
  margin-bottom: 4px;
}
.founder .school {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-mute);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.founder ul {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  display: grid;
  gap: 10px;
}
.founder ul li {
  color: var(--fg);
  font-size: 15px;
  line-height: 1.5;
  padding-left: 14px;
  position: relative;
}
.founder ul li::before {
  content: "—";
  color: var(--fg-mute);
  position: absolute;
  left: 0;
  font-family: var(--f-mono);
  font-size: 12px;
}


/* ---------- Contact ---------- */

.contact p {
  color: var(--fg-dim);
  font-size: 18px;
  max-width: 58ch;
  margin-bottom: 40px;
  line-height: 1.6;
}

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0;
}
.footer-row {
  display: flex;
  gap: 16px;
  align-items: baseline;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-mute);
  text-transform: uppercase;
}
.footer-row .sep { color: var(--rule-2); }
.footer-row .brand { color: var(--fg); letter-spacing: 0.2em; font-weight: 600; }
.footer-row .right { margin-left: auto; }

/* ---------- Reveal on scroll ---------- */

.reveal { opacity: 0; transform: translateY(10px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .container { padding: 0 24px; }
  .nav-inner { padding: 0 24px; gap: 16px; }
  .nav-links { gap: 18px; }
  .founders { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 640px) {
  section { padding: 72px 0; }
  .hero-content { padding: 140px 0 80px; }
  .hero h1 { font-size: 40px; }
  .nav-links a:nth-child(-n+3) { display: none; }
  .footer-row { flex-direction: column; gap: 8px; align-items: flex-start; }
  .footer-row .right { margin-left: 0; }
  .footer-row .sep { display: none; }
}