/* ============================================================
   Portfolio — editorial / field-notebook design system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400;1,9..144,500&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --paper: #f3ede0;
  --paper-raised: #ece4d2;
  --ink: #201c16;
  --ink-soft: #55503f;
  --ink-faint: #8a8371;
  --rule: #cdc2a4;
  --rule-soft: #ded4b9;

  --accent: #a63d2f;       /* rust — primary */
  --accent-ink: #f3ede0;

  --tag-symbio: #35594f;      /* deep teal */
  --tag-systems: #3d4a63;     /* muted indigo */
  --tag-omics: #a63d2f;       /* rust */
  --tag-ml: #8a6d2f;          /* ochre */

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --max: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --ease: cubic-bezier(.22,.68,0,1);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* subtle paper grain overlay */
body::before{
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.08;
  margin: 0;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

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

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- eyebrow / mono labels ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before{
  content: "";
  width: 1.6em;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

/* ---------- header / nav ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(243,237,224,0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
.brand-mark{
  width: 36px;
  height: 36px;
  border: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  flex-shrink: 0;
}
.brand-name{ color: var(--ink); }
.brand-name span{ color: var(--ink-faint); }

nav.primary-nav ul{
  list-style: none;
  display: flex;
  gap: clamp(1.2rem, 2vw, 2.4rem);
  margin: 0;
  padding: 0;
}
nav.primary-nav a{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 4px;
}
nav.primary-nav a::after{
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right 0.28s var(--ease);
}
nav.primary-nav a:hover::after,
nav.primary-nav a[aria-current="page"]::after{
  right: 0;
}
nav.primary-nav a[aria-current="page"]{ color: var(--accent); }

.nav-toggle{
  display: none;
  background: none;
  border: 1px solid var(--ink);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content: "";
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle span::before{ position: absolute; top: -6px; }
.nav-toggle span::after{ position: absolute; top: 6px; }

/* ---------- hero ---------- */
.hero{
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--rule);
}
.hero .wrap{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}
.hero-copy .eyebrow{ margin-bottom: 1.4rem; }
.hero-copy h1{
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  margin-bottom: 1.5rem;
}
.hero-copy h1 em{
  font-style: italic;
  color: var(--accent);
}
.hero-copy .lede{
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 2rem;
}
.hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}
.link-arrow{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.link-arrow::after{ content: " \2192"; }
.link-arrow:hover{ border-color: var(--accent); color: var(--accent); padding-left: 3px; }

/* photo plate */
.plate{
  position: relative;
}
.plate-frame{
  border: 1px solid var(--ink);
  padding: 10px;
  background: var(--paper-raised);
}
.plate-img-wrap{
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: #ddd3ba;
}
.plate-img-wrap img{
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(85%) contrast(1.05) brightness(1.02);
  transition: filter 0.5s var(--ease), transform 0.6s var(--ease);
}
.plate-frame:hover .plate-img-wrap img{
  filter: grayscale(0%) contrast(1.02);
  transform: scale(1.015);
}
.plate-caption{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-top: 0.7rem;
}
.plate-caption strong{ color: var(--ink); font-weight: 500; }

/* ---------- elsewhere / links strip ---------- */
.elsewhere{
  padding: 2.6rem 0;
  border-bottom: 1px solid var(--rule);
}
.elsewhere .wrap{
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 3vw, 2.5rem);
  flex-wrap: wrap;
}
.elsewhere-label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  flex-shrink: 0;
}
.elsewhere-list{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.8rem;
  margin: 0; padding: 0;
}
.elsewhere-list a{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.elsewhere-list a:hover{ border-color: var(--accent); color: var(--accent); }
.elsewhere-list a::after{ content: " \2197"; font-size: 0.75em; }
.elsewhere-list a.has-note::after{ content: none; }
.elsewhere-list a .elsewhere-note{
  display: block;
  font-size: 0.82em;
  color: var(--ink-faint);
  margin-top: 0.2rem;
}
.elsewhere-list a .elsewhere-note::after{ content: " \2197"; font-size: 1em; }

/* ---------- focus areas grid ---------- */
.section{
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}
.section-head{
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  margin-bottom: 2.6rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.4rem;
}
.section-head h2{ font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
.section-head .eyebrow{ margin-bottom: 0.8rem; }
.section-sub{ color: var(--ink-soft); max-width: 42ch; }

.focus-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.focus-card{
  background: var(--paper);
  padding: 1.9rem 1.6rem 2.1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background 0.25s var(--ease);
}
.focus-card:hover{ background: var(--paper-raised); }
.focus-num{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
}
.focus-tag{
  width: 26px; height: 3px;
  background: var(--tag-color, var(--accent));
}
.focus-card h3{
  font-size: 1.2rem;
  font-weight: 500;
}
.focus-card p{
  color: var(--ink-soft);
  font-size: 0.92rem;
  flex-grow: 1;
}
.focus-card .link-arrow{ align-self: flex-start; }

/* ---------- career timeline ---------- */
.timeline{
  border-top: 1px solid var(--rule);
}
.timeline-item{
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: 2.4rem 0;
  border-bottom: 1px solid var(--rule);
}
.timeline-date{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  padding-top: 0.3rem;
}
.timeline-body h3{
  font-size: 1.5rem;
  margin-bottom: 0.3rem;
}
.timeline-org{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
  display: block;
}
.timeline-body p{
  color: var(--ink-soft);
  max-width: 62ch;
}
.timeline-body p + p{ margin-top: 0.7rem; }

/* ---------- grad school subsections ---------- */
.subnav{
  position: sticky;
  top: 77px;
  z-index: 90;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.subnav .wrap{
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  overflow-x: auto;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.subnav a{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--ink-soft);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.subnav a:hover{ color: var(--ink); }
.subnav a.is-active{ color: var(--ink); border-color: var(--accent); }

.plate-entry{
  border-top: 1px solid var(--rule);
  padding: clamp(2.6rem, 6vw, 4rem) 0;
  scroll-margin-top: 140px;
}
.plate-entry .wrap{
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}
.plate-entry-tag{
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.tag-chip{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tag-color, var(--accent));
}
.tag-chip::before{
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--tag-color, var(--accent));
  display: inline-block;
}
.plate-entry-tag .focus-num{ font-size: 2.4rem; color: var(--rule-soft); font-family: var(--font-display); font-weight: 300; }

.plate-entry h3{
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  margin-bottom: 1.1rem;
}
.plate-entry .body-copy{
  color: var(--ink-soft);
  max-width: 62ch;
}
.plate-entry .body-copy p + p{ margin-top: 0.9rem; }
.plate-entry .entry-links{
  margin-top: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.entry-links a{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--rule);
  width: fit-content;
  padding-bottom: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.entry-links a:hover{ border-color: var(--accent); color: var(--accent); }
.entry-links a::before{ content: "\2192  "; font-family: var(--font-mono); }

/* ---------- page intro (career / portfolio) ---------- */
.page-intro{
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(2rem, 5vw, 3rem);
}
.page-intro h1{
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin: 1.2rem 0 1.4rem;
}
.page-intro p a,
.body-copy p a{
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.page-intro p a:hover,
.body-copy p a:hover{
  color: var(--accent);
  border-color: var(--accent);
}
.page-intro p{
  color: var(--ink-soft);
  max-width: 58ch;
  font-size: 1.05rem;
}

/* ---------- editable notice ---------- */
.draft-note{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  border: 1px dashed var(--rule);
  padding: 0.9rem 1.1rem;
  margin-top: 1.6rem;
  max-width: 62ch;
}
.draft-note strong{ color: var(--ink-soft); }

/* ---------- footer ---------- */
.site-footer{
  border-top: 1px solid var(--rule);
  padding: 2.6rem 0;
}
.site-footer .wrap{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-meta{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
}

/* ---------- reveal-on-scroll ---------- */
.reveal{
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- responsive ---------- */
@media (max-width: 900px){
  .hero .wrap{ grid-template-columns: 1fr; }
  .plate{ max-width: 340px; }
  .focus-grid{ grid-template-columns: repeat(2, 1fr); }
  .plate-entry .wrap{ grid-template-columns: 1fr; }
  .plate-entry-tag{ flex-direction: row; align-items: center; }
  .timeline-item{ grid-template-columns: 1fr; gap: 0.6rem; }
}

@media (max-width: 760px){
  nav.primary-nav{
    position: fixed;
    inset: 76px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    transform: translateY(-110%);
    transition: transform 0.3s var(--ease);
  }
  nav.primary-nav.is-open{ transform: translateY(0); }
  nav.primary-nav ul{
    flex-direction: column;
    padding: 1.5rem var(--gutter) 2rem;
    gap: 1.2rem;
  }
  .nav-toggle{ display: flex; }
  .focus-grid{ grid-template-columns: 1fr; }
  .elsewhere .wrap{ flex-direction: column; align-items: flex-start; }
}