/* ===========================================================
   TOKENS
=========================================================== */
:root{
  --ink:        #10141A;
  --ink-soft:   #161B22;
  --paper:      #EDE7DA;
  --paper-dim:  #A9A79C;
  --brass:      #B8863B;
  --brass-soft: #8C6A32;
  --teal:       #4F9C93;
  --line:       #2C333B;
  --rust:       #B15A3D;

  --serif: 'Fraunces', serif;
  --sans:  'Inter', sans-serif;
  --mono:  'IBM Plex Mono', monospace;

  --max: 1120px;
  --pad: clamp(24px, 5vw, 72px);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }

body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation:none !important; transition:none !important; }
}

a{ color:inherit; text-decoration:none; }
.mono{ font-family:var(--mono); letter-spacing:0.06em; text-transform:uppercase; font-size:0.72rem; }
em{ color:var(--brass); font-style:normal; }

h1,h2,h3{ font-family:var(--serif); font-weight:500; color:var(--paper); }
h2{ font-size:clamp(1.9rem, 3.2vw, 2.6rem); font-weight:400; }
h3{ font-size:1.25rem; font-weight:500; }

:focus-visible{ outline:2px solid var(--teal); outline-offset:3px; }

/* ===========================================================
   NAV
=========================================================== */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:20px var(--pad);
  background:linear-gradient(to bottom, rgba(16,20,26,0.92), rgba(16,20,26,0));
}
.nav__mark{
  font-family:var(--serif); font-size:1.1rem; color:var(--brass); letter-spacing:0.04em;
}
.nav__links{ display:flex; gap:28px; }
.nav__links a{
  font-family:var(--mono); font-size:0.7rem; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--paper-dim); transition:color 0.2s;
}
.nav__links a:hover{ color:var(--teal); }
@media (max-width:720px){ .nav__links{ display:none; } }

/* ===========================================================
   HERO
=========================================================== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center;
  padding:120px var(--pad) 60px;
  overflow:hidden;
}
.hero__emblem{
  position:absolute; top:50%; left:50%;
  width:min(720px, 100vw); height:min(720px, 100vw);
  transform:translate(-50%,-50%);
  opacity:0.5;
  pointer-events:none;
}
.emblem-svg{ width:100%; height:100%; animation:rotate-slow 120s linear infinite; }
@keyframes rotate-slow{ from{ transform:rotate(0deg); } to{ transform:rotate(360deg); } }
@media (prefers-reduced-motion: reduce){ .emblem-svg{ animation:none; } }

.hero__content{ position:relative; z-index:1; max-width:680px; }
.eyebrow{ color:var(--teal); margin-bottom:18px; display:block; }
.hero__name{ font-size:clamp(2.6rem, 7vw, 4.6rem); line-height:1.05; margin-bottom:18px; }
.hero__role{ font-size:1.05rem; color:var(--brass); margin-bottom:22px; font-family:var(--serif); font-style:italic; }
.hero__statement{ color:var(--paper-dim); font-size:1.02rem; max-width:520px; margin:0 auto 34px; }
.hero__cta{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

.btn{
  display:inline-block; padding:13px 26px; border-radius:2px;
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.08em; text-transform:uppercase;
  transition:all 0.2s;
  border:1px solid var(--brass);
}
.btn--primary{ background:var(--brass); color:var(--ink); }
.btn--primary:hover{ background:var(--brass-soft); }
.btn--ghost{ color:var(--paper); border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--teal); color:var(--teal); }

.scroll-cue{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%);
  color:var(--paper-dim); font-size:0.65rem;
}

/* ===========================================================
   SECTION SCAFFOLDING
=========================================================== */
.section{ padding:96px var(--pad); max-width:var(--max); margin:0 auto; }
.section--alt{ background:var(--ink-soft); max-width:none; }
.section--alt > *{ max-width:var(--max); margin-left:auto; margin-right:auto; }
.section--alt{ display:block; padding:96px 0; }
.section--alt .section__head,
.section--alt .filters,
.section--alt .work-grid,
.section--alt .beyond-grid{ padding-left:var(--pad); padding-right:var(--pad); }

.section__head{ margin-bottom:48px; border-top:1px solid var(--line); padding-top:24px; }
.section__head .eyebrow{ margin-bottom:10px; }

/* ===========================================================
   RESEARCH FOCUS
=========================================================== */
.focus-grid{
  display:grid; grid-template-columns:repeat(2, 1fr); gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.focus-card{ background:var(--ink); padding:32px; }
.focus-card__tag{ color:var(--teal); margin-bottom:14px; display:block; }
.focus-card h3{ margin-bottom:10px; }
.focus-card p{ color:var(--paper-dim); font-size:0.95rem; }
@media (max-width:720px){ .focus-grid{ grid-template-columns:1fr; } }

/* ===========================================================
   WORK / PROJECTS
=========================================================== */
.filters{ display:flex; gap:10px; margin-bottom:36px; flex-wrap:wrap; }
.filter{
  background:none; border:1px solid var(--line); color:var(--paper-dim);
  padding:9px 18px; cursor:pointer; transition:all 0.2s; font-family:var(--mono);
  font-size:0.7rem; letter-spacing:0.08em; text-transform:uppercase;
}
.filter:hover{ border-color:var(--brass); color:var(--brass); }
.filter.is-active{ background:var(--brass); border-color:var(--brass); color:var(--ink); }

.work-grid{ display:grid; grid-template-columns:repeat(2, 1fr); gap:28px; }
.work-card{
  border:1px solid var(--line); padding:30px; transition:border-color 0.25s, transform 0.25s;
}
.work-card:hover{ border-color:var(--brass-soft); transform:translateY(-2px); }
.work-card__meta{ color:var(--brass); margin-bottom:12px; display:block; }
.work-card h3{ margin-bottom:12px; }
.work-card p{ color:var(--paper-dim); font-size:0.95rem; margin-bottom:20px; }
.stat-row{ display:flex; gap:22px; list-style:none; flex-wrap:wrap; }
.stat-row li{ color:var(--paper-dim); font-size:0.68rem; }
.stat-row strong{ color:var(--teal); display:block; font-size:0.95rem; font-family:var(--sans); }
.work-card[hidden]{ display:none; }
@media (max-width:720px){ .work-grid{ grid-template-columns:1fr; } }

/* ===========================================================
   ABOUT
=========================================================== */
.about-bio{ max-width:640px; margin-bottom:56px; }
.about-bio p{ color:var(--paper-dim); font-size:1.02rem; }

.timelines{ display:grid; grid-template-columns:1fr 1fr; gap:56px; margin-bottom:56px; }
.timeline__title{ margin-bottom:22px; color:var(--brass); font-size:1.05rem; }
.timeline__list{ list-style:none; border-left:1px solid var(--line); }
.timeline__list li{ padding:0 0 26px 22px; position:relative; }
.timeline__list li::before{
  content:''; position:absolute; left:-4px; top:5px; width:7px; height:7px;
  border-radius:50%; background:var(--teal);
}
.timeline__date{ color:var(--paper-dim); margin-bottom:6px; display:block; }
.timeline__role{ font-weight:500; margin-bottom:4px; }
.timeline__org{ color:var(--paper-dim); font-size:0.9rem; }
.tag-incoming{
  color:var(--ink); background:var(--teal); padding:2px 8px; margin-left:8px;
  border-radius:2px; font-size:0.6rem; vertical-align:middle;
}
@media (max-width:720px){ .timelines{ grid-template-columns:1fr; } }

.tools__grid{
  display:flex; flex-wrap:wrap; gap:10px; list-style:none;
}
.tools__grid li{
  border:1px solid var(--line); padding:8px 14px; color:var(--paper-dim);
}

/* ===========================================================
   BEYOND THE LAB
=========================================================== */
.beyond-grid{ display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.beyond-card{ padding:32px; border:1px solid var(--line); background:var(--ink); }
.beyond-card h3{ margin-bottom:14px; color:var(--brass); }
.beyond-card p{ color:var(--paper-dim); font-size:0.95rem; }
@media (max-width:720px){ .beyond-grid{ grid-template-columns:1fr; } }

/* ===========================================================
   FOOTER / CONTACT
=========================================================== */
.footer{ padding:110px var(--pad) 60px; border-top:1px solid var(--line); text-align:center; }
.footer__inner{ max-width:640px; margin:0 auto; }
.footer h2{ margin:18px 0 34px; }
.footer__links{ display:flex; gap:26px; justify-content:center; margin-bottom:28px; }
.footer__links a{ color:var(--paper-dim); transition:color 0.2s; }
.footer__links a:hover{ color:var(--teal); }
.footer__note{ color:var(--paper-dim); opacity:0.7; }