/* ---------- tokens ---------- */
:root {
  --bg: #fcfbf5;
  --ink: #1e3602;
  --accent: #ffec5c;

  --ink-80: rgba(30, 54, 2, 0.80);
  --ink-60: rgba(30, 54, 2, 0.60);
  --ink-35: rgba(30, 54, 2, 0.35);
  --ink-12: rgba(30, 54, 2, 0.12);
  --cream-85: rgba(252, 251, 245, 0.85);
  --cream-60: rgba(252, 251, 245, 0.60);
  --cream-18: rgba(252, 251, 245, 0.18);

  --radius: 6px;
  --wrap: 1120px;
  --nav-h: 56px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
.sprite { display: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap.center { text-align: center; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: var(--ink);
  padding: 10px 16px; font-weight: 600; border-radius: var(--radius);
}
.skip-link:focus { left: 16px; top: 12px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.02em; line-height: 1.12; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease);
}
.nav.scrolled {
  background: rgba(252, 251, 245, 0.75);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--ink-12);
}
.nav.on-dark:not(.scrolled) { color: var(--bg); }
.nav.on-dark.scrolled {
  background: rgba(30, 54, 2, 0.75);
  border-bottom-color: var(--cream-18);
  color: var(--bg);
}

.nav-inner {
  max-width: var(--wrap); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; gap: 24px;
}

.nav-brand { font-weight: 700; font-size: 15px; letter-spacing: 0.06em; text-decoration: none; }

.nav-links { display: flex; gap: 26px; margin: 0 auto; }
.nav-links a {
  font-size: 13.5px; font-weight: 500; text-decoration: none;
  opacity: 0.7; position: relative; padding: 4px 0;
  transition: opacity 0.25s var(--ease);
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-links a:hover { opacity: 1; }
.nav-links a.active { opacity: 1; }
.nav-links a.active::after { transform: scaleX(1); }

.nav-social { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-social a {
  display: grid; place-items: center; width: 32px; height: 32px;
  border-radius: var(--radius); opacity: 0.7;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}
.nav-social svg { width: 17px; height: 17px; }
.nav-social a:hover { opacity: 1; transform: translateY(-2px); }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 34px; height: 34px; background: none; border: 0; padding: 0;
  cursor: pointer; color: inherit;
}
.nav-toggle span { display: block; height: 1.5px; background: currentColor; transition: transform 0.3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 72px;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 72px) 24px 120px;
}

.eyebrow {
  margin: 0 0 20px;
  font-size: 12.5px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-60);
}
.eyebrow.accent { color: var(--accent); }

.hero-title {
  font-size: clamp(2.3rem, 5.2vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.03;
  margin-bottom: 24px;
}

.hero-sub {
  margin: 0 0 36px;
  max-width: 40ch;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--ink-80);
}

.hero-links { display: flex; flex-wrap: wrap; gap: 28px; margin: 0; }
.wrap.center .hero-links { justify-content: center; }

.chev {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 1.02rem; font-weight: 600; text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid transparent; padding-bottom: 2px;
  transition: border-color 0.3s var(--ease), gap 0.3s var(--ease);
}
.chev::after {
  content: '';
  width: 6px; height: 6px;
  border-right: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.chev:hover { border-bottom-color: var(--accent); gap: 12px; }
.chev:hover::after { transform: rotate(45deg) translate(2px, -2px); }
.chev.light { color: var(--bg); }

/* portrait + facts */
.hero-figure { display: flex; flex-direction: column; align-items: center; gap: 28px; }

.portrait {
  position: relative;
  width: min(70vw, 260px);
  line-height: 0;
  will-change: transform;
}
.portrait::before {
  content: ''; position: absolute; inset: 16px -16px -16px 16px;
  z-index: 0;
  background: var(--accent); border-radius: 10px;
}
.portrait img {
  position: relative; z-index: 1;
  width: 100%; height: auto;
  aspect-ratio: 4 / 5; object-fit: cover;
  border-radius: 10px; background: #fff;
}

/* availability */
.status-tag {
  position: absolute;
  left: -14px; bottom: 22px;
  z-index: 3;
  display: inline-flex; align-items: center; gap: 7px;
  margin: 0;
  line-height: 1;
  white-space: nowrap;
  padding: 8px 13px 8px 11px;
  background: var(--accent);
  color: var(--ink);
  font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: var(--radius);
  transform: rotate(-3deg);
  box-shadow: 0 6px 18px rgba(30, 54, 2, 0.16);
}

.dot {
  position: relative;
  width: 7px; height: 7px; flex: none;
  border-radius: 50%;
  background: var(--ink);
}
.dot::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid currentColor;
}

.available {
  display: inline-flex; align-items: center; gap: 10px;
  margin: 0 0 30px;
  font-size: 0.98rem;
  color: var(--cream-85);
}
.available .dot { background: var(--accent); }

@media (prefers-reduced-motion: no-preference) {
  .dot::after { animation: ping 2.6s var(--ease) infinite; }
  @keyframes ping {
    0%        { transform: scale(1);   opacity: 0.7; }
    70%, 100% { transform: scale(2.6); opacity: 0; }
  }
}

.facts {
  display: flex; gap: 28px; margin: 0;
  font-size: 0.85rem;
}
.facts div { text-align: center; }
.facts dt {
  font-size: 11px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-35); margin-bottom: 4px;
}
.facts dd { margin: 0; font-weight: 600; }

.scroll-cue {
  position: absolute; left: 50%; bottom: 34px;
  width: 22px; height: 40px; margin-left: -11px;
  display: grid; place-items: center;
}
.scroll-cue span {
  display: block; width: 2px; height: 36px;
  border-radius: 2px;
  background: var(--ink-35);
}
@media (prefers-reduced-motion: no-preference) {
  .scroll-cue span { animation: cue 2.2s var(--ease) infinite; transform-origin: top; }
  @keyframes cue {
    0%   { transform: scaleY(0); opacity: 0; }
    35%  { transform: scaleY(1); opacity: 1; }
    100% { transform: scaleY(1) translateY(34px); opacity: 0; }
  }
}

/* ---------- bands + section layout ---------- */
.band { padding: clamp(72px, 10vw, 130px) 0; }
.band-dark { background: var(--ink); color: var(--bg); }

.sec { display: grid; grid-template-columns: 220px 1fr; gap: 56px; }
.sec-head { position: sticky; top: calc(var(--nav-h) + 28px); align-self: start; }
.sec-num {
  display: block; font-size: 12px; font-weight: 700;
  letter-spacing: 0.16em; color: var(--ink-35); margin-bottom: 8px;
}
.sec-title {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  position: relative; padding-bottom: 12px;
}
.sec-title::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 34px; height: 3px; background: var(--accent);
}

.display {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700; letter-spacing: -0.035em; margin-bottom: 22px;
}

.statement {
  font-size: clamp(1.25rem, 2.4vw, 1.85rem);
  font-weight: 500; line-height: 1.32; letter-spacing: -0.02em;
  margin: 0 0 44px;
}
.statement.small { font-size: clamp(1.1rem, 1.9vw, 1.4rem); margin-bottom: 36px; }

.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.cols p { margin: 0; color: var(--ink-80); }

.lede {
  max-width: 62ch; margin: 0 auto 36px;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  color: var(--cream-85);
}

/* ---------- experience ---------- */
.job {
  position: relative;
  padding: 28px 0 28px 24px;
  border-top: 1px solid var(--ink-12);
}
.job::before {
  content: ''; position: absolute; left: 0; top: 28px; bottom: 28px;
  width: 3px; background: var(--ink-12);
  transition: background 0.4s var(--ease);
}
.job:hover::before { background: var(--accent); }
.job-years {
  margin: 0 0 6px; font-size: 12px; font-weight: 700;
  letter-spacing: 0.1em; color: var(--ink-35);
}
.job h3 { font-size: 1.35rem; }
.job-role { margin: 6px 0 18px; color: var(--ink-60); font-size: 0.95rem; }

.list { margin: 0; padding-left: 20px; color: var(--ink-80); }
.list li { margin-bottom: 9px; }
.list li::marker { color: var(--accent); }

/* ---------- product shot ---------- */
.shot { margin: 56px 0 64px; }
.shot-frame { position: relative; }
.shot-frame::before {
  content: ''; position: absolute;
  inset: 16px -16px -16px 16px;
  background: var(--accent); border-radius: 12px;
}
.shot-frame img {
  position: relative;
  width: 100%; height: auto;
  border-radius: 12px;
  border: 1px solid var(--cream-18);
}
.shot figcaption {
  margin-top: 34px; font-size: 0.86rem; color: var(--cream-60);
}

/* ---------- features ---------- */
.features {
  list-style: none; margin: 0 0 44px; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--cream-18);
  border: 1px solid var(--cream-18);
  border-radius: 12px; overflow: hidden; text-align: left;
}
.features li { background: var(--ink); padding: 30px; transition: background 0.35s var(--ease); }
.features li:hover { background: #26440b; }
.features h4 { font-size: 1.05rem; margin-bottom: 10px; }
.features p { margin: 0; color: var(--cream-60); font-size: 0.95rem; }

/* ---------- chips ---------- */
.chips { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 0; margin: 0 0 20px; }
.chips li {
  font-size: 0.8rem; font-weight: 500; padding: 7px 13px;
  border: 1px solid var(--cream-18); border-radius: var(--radius);
  color: var(--cream-85);
}
.chips.dark { justify-content: flex-start; margin-bottom: 0; }
.chips.dark li { border-color: var(--ink-12); color: var(--ink-80); transition: border-color 0.3s var(--ease); }
.chips.dark li:hover { border-color: var(--ink-35); }

.note { margin: 0; font-size: 0.85rem; color: var(--cream-60); }

/* ---------- patents ---------- */
.patents { list-style: none; margin: 0; padding: 0; }
.patents li { border-top: 1px solid var(--ink-12); }
.patents li:last-child { border-bottom: 1px solid var(--ink-12); }
.patents a {
  display: grid;
  grid-template-columns: 148px 1fr auto 20px;
  align-items: center;
  gap: 6px 22px;
  padding: 22px 0;
  text-decoration: none;
  transition: padding 0.4s var(--ease);
}
.patents a:hover { padding-left: 10px; padding-right: 10px; }
.pid { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.02em; color: var(--ink-60); }
.ptitle { font-size: 1.02rem; font-weight: 500; }
.pmeta { font-size: 0.82rem; color: var(--ink-35); white-space: nowrap; }
.parrow {
  width: 17px; height: 17px; color: var(--ink-35);
  opacity: 0; transform: translate(-4px, 4px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}
.patents a:hover .parrow { opacity: 1; transform: none; color: var(--ink); }

/* ---------- skills ---------- */
.skill-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin-bottom: 44px; }
.skill h4 { font-size: 0.98rem; margin-bottom: 14px; }
.education {
  padding-top: 26px; border-top: 1px solid var(--ink-12);
  color: var(--ink-60); font-size: 0.94rem; margin: 0;
}
.education strong { color: var(--ink); }

/* ---------- social + footer ---------- */
.social { list-style: none; display: flex; justify-content: center; gap: 14px; padding: 0; margin: 40px 0 0; }
.social a {
  display: grid; place-items: center; width: 48px; height: 48px;
  border: 1px solid var(--cream-18); border-radius: 50%; color: var(--bg);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.social svg { width: 20px; height: 20px; }
.social a:hover { transform: translateY(-4px); background: var(--accent); border-color: var(--accent); color: var(--ink); }

.foot-meta { margin: 44px 0 0; color: var(--cream-60); font-size: 0.9rem; }
.copy { font-size: 0.8rem; opacity: 0.7; }

/* ---------- motion ---------- */
.anim { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .anim {
    opacity: 0; transform: translateY(22px);
    transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
    transition-delay: calc(var(--d, 0) * 85ms);
  }
  .anim[data-anim="scale"] { transform: scale(0.96); }
  .anim.in { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 48px; text-align: center; padding-bottom: 100px; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-links { justify-content: center; }
  .hero-figure { order: -1; }
  .sec { grid-template-columns: 1fr; gap: 28px; }
  .sec-head { position: static; }
  .features { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 760px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0;
    padding: 8px 24px 20px;
    background: rgba(252, 251, 245, 0.97);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ink-12);
    color: var(--ink);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { font-size: 16px; padding: 12px 0; opacity: 1; border-bottom: 1px solid var(--ink-12); }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-social { margin-left: auto; gap: 0; }
  .nav-social a { width: 30px; height: 30px; }

  .cols { grid-template-columns: 1fr; }
  .patents a { grid-template-columns: 1fr auto; gap: 4px 14px; }
  .pid { grid-column: 1 / -1; }
  .parrow { display: none; }
  .shot::before { inset: 10px -10px -10px 10px; }
}

@media (max-width: 420px) {
  .nav-inner { gap: 8px; padding: 0 16px; }
  .nav-social a { width: 28px; height: 28px; }
  .nav-social svg { width: 16px; height: 16px; }
  .hero-links { gap: 18px; }
  .facts { gap: 18px; }
}