/* ============================================================
   Design tokens — Millicent Ochieng
   Palette: Deep Teal & Cream, engineering register.
   Light is default; [data-theme="dark"] overrides.
   ============================================================ */

:root {
  --bg: #fbf9f4;
  --bg-2: #f2efe6;
  --surface: #ffffff;

  --ink: #14302e;
  --ink-2: #3f5b58;
  --ink-3: #5e726f;
  --ink-muted: #8a9a98;

  --line: #e2ded0;
  --line-strong: #c9c3b0;

  --accent: #0f5d56;
  --accent-hover: #0a403b;
  --accent-soft: #e3efed;
  --copper: #b4552d;
  --on-accent: #ffffff;

  --font-display: "Newsreader", Georgia, "Iowan Old Style", "Noto Serif", serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 12px;
  --maxw: 1080px;
}

[data-theme="dark"] {
  --bg: #0e1a19;
  --bg-2: #142523;
  --surface: #152826;

  --ink: #eef3f1;
  --ink-2: #b9c9c6;
  --ink-3: #8ba39f;
  --ink-muted: #6e8482;

  --line: #24413e;
  --line-strong: #345a56;

  --accent: #5fd3c4;
  --accent-hover: #8ae4d8;
  --accent-soft: #14312e;
  --copper: #e8875a;
  --on-accent: #0b1917;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }

/* ---------- primitives ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 .5rem;
}
.h-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -.015em;
  line-height: 1.12;
  color: var(--ink);
  margin: 0;
}
.section { padding: 4rem 0; border-top: 1px solid var(--line); }
.section h2 { font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; margin: 0 0 .5rem; letter-spacing: -.01em; }
.lede { color: var(--ink-2); max-width: 64ch; margin: 0; }

.pill {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .82rem; font-weight: 600;
  padding: .5rem 1.05rem; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--ink-2);
  text-decoration: none; background: transparent;
  transition: border-color .15s, color .15s, background .15s;
}
.pill:hover { border-color: var(--accent); color: var(--accent); }
.pill .ic { width: 1.05em; height: 1.05em; flex: 0 0 auto; }
.pill--solid { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.pill--solid:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }

.tag {
  font-family: var(--font-mono); font-size: 10px; font-weight: 500;
  letter-spacing: .06em; padding: .2rem .5rem; border-radius: 4px;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--line); white-space: nowrap;
}
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.arrow { text-decoration: none; color: var(--accent); font-weight: 600; font-size: .9rem; display: inline-flex; gap: .35rem; align-items: center; }
.arrow span { transition: transform .2s ease; display: inline-block; }
.arrow:hover span { transform: translateX(3px); }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .85rem 0; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { text-decoration: none; color: var(--ink-2); font-size: .88rem; font-weight: 500; }
.nav-links a:hover, .nav-links a.is-active { color: var(--accent); }
.icon-btn { background: none; border: 1px solid var(--line-strong); color: var(--ink-2); border-radius: 8px; width: 34px; height: 34px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.nav-toggle { display: none; }
@media (max-width: 820px) {
  .nav-links { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: flex-start; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: .5rem 1.5rem 1rem; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .6rem 0; width: 100%; }
  .nav-toggle { display: inline-flex; }
  .nav-in { position: relative; }
}

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); background: var(--bg-2); padding: 3rem 0 2rem; margin-top: 1rem; }
.footer a { color: var(--ink-2); text-decoration: none; font-size: .88rem; display: flex; align-items: center; gap: .5rem; padding: .18rem 0; }
.footer a .ic { width: 14px; height: 14px; flex: 0 0 auto; color: var(--ink-3); }
.footer a:hover .ic { color: var(--accent); }
.footer a:hover { color: var(--accent); }
.copyright { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .8rem; font-size: .8rem; color: var(--ink-3); }
.footer--min { padding: 1.6rem 0; margin-top: 3rem; }
.footer-social { display: flex; align-items: center; gap: 1.1rem; }
.footer-social a { padding: 0; color: var(--ink-3); }
.footer-social .ic { width: 17px; height: 17px; }
.footer-social a:hover, .footer-social a:hover .ic { color: var(--accent); }

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- page header ---------- */
.page-head { padding: 3.5rem 0 2rem; border-bottom: 1px solid var(--line); }
.page-head h1 { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 2.9rem); font-weight: 600; letter-spacing: -.015em; margin: 0; line-height: 1.12; }
.page-head .lede { margin-top: .8rem; }
.page-body { padding: 2.5rem 0 4rem; }

/* ---------- prose ---------- */
.prose p { color: var(--ink-2); margin: 0 0 1.1rem; }
.prose a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent); }
.prose h2 { font-family: var(--font-display); font-size: 1.5rem; margin: 2.2rem 0 .8rem; }

/* ---------- publications ---------- */
.pubs { list-style: none; margin: 2rem 0 0; padding: 0; }
.pub-group { list-style: none; }
.pub-group + .pub-group { margin-top: 2.2rem; }
.pub-year-head {
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  letter-spacing: .14em; color: var(--accent); font-variant-numeric: tabular-nums;
  margin: 0; padding: 0 0 .5rem; border-bottom: 1px solid var(--line-strong);
}
.pub-group-list { list-style: none; margin: .4rem 0 0; padding: 0; }
.pub { display: grid; grid-template-columns: 92px 1fr; gap: 1.3rem; padding: .95rem 0; }
.pub-venue { display: flex; flex-direction: column; gap: .35rem; align-items: flex-start; }
.pub-venue .tag { width: 100%; text-align: center; }
.pub-year { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.pub-title { font-size: .98rem; font-weight: 600; color: var(--ink); line-height: 1.4; margin: 0; }
.pub-title a { text-decoration: none; color: inherit; }
.pub-title a:hover { color: var(--accent); }
.pub-authors { font-size: .83rem; color: var(--ink-3); margin: .3rem 0 0; line-height: 1.55; }
.pub-authors b { color: var(--ink); font-weight: 600; }
.more-authors { color: var(--accent); cursor: pointer; border-bottom: 1px dotted var(--accent); }
.more-authors:hover { color: var(--ink); border-bottom-color: var(--ink); }
.pub-periodical { font-size: .83rem; color: var(--ink-2); margin: .3rem 0 0; font-style: italic; }
.pub-award { display: inline-block; margin-top: .4rem; font-size: .78rem; font-weight: 600; color: var(--copper); }
.pub-links { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .55rem; }
.pub-links a { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: .25rem .6rem; text-decoration: none; transition: border-color .15s, color .15s; }
.pub-links a:hover { color: var(--accent); border-color: var(--accent); }
@media (max-width: 640px) {
  .pub { grid-template-columns: 1fr; gap: .5rem; }
  .pub-venue { flex-direction: row; align-items: center; gap: .55rem; }
  .pub-venue .tag { width: auto; }
}

/* ---------- timeline ---------- */
.timeline { list-style: none; margin: 2rem 0 0; padding: 0 0 0 1.4rem; border-left: 1px solid var(--line); }
.tl { position: relative; display: grid; grid-template-columns: 7.5rem 1fr; gap: 1.6rem; padding: 0 0 1.8rem 0; }
.tl::before { content: ""; position: absolute; left: calc(-1.4rem - 4.5px); top: .45rem; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); }
.tl .d { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); padding-top: .28rem; }
.tl p { margin: 0; font-size: .92rem; color: var(--ink-2); }
.tl p a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent); }
@media (max-width: 640px) { .tl { grid-template-columns: 1fr; gap: .3rem; } .tl .d { padding-top: 0; } }

/* ---------- cv / dated list ---------- */
.edu { list-style: none; margin: 2rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.edu li { display: grid; grid-template-columns: 130px 1fr; gap: 1.4rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.edu li:last-child { border-bottom: 0; }
.edu li.grouped { border-bottom: 0; padding-bottom: .25rem; }
.edu li.grouped + li { padding-top: .25rem; }
.edu .when { font-family: var(--font-mono); font-size: 11px; color: var(--accent); font-variant-numeric: tabular-nums; padding-top: .2rem; }
.edu h3 { font-size: 1.02rem; margin: 0 0 .3rem; color: var(--ink); }
.edu .where { font-size: .88rem; color: var(--ink-2); margin: 0 0 .5rem; }
.edu .detail { font-size: .86rem; color: var(--ink-3); margin: 0; }
.edu .detail a { color: var(--accent); text-decoration: none; }
@media (max-width: 640px) { .edu li { grid-template-columns: 1fr; gap: .4rem; } }

/* ---------- band ---------- */
.band { background: var(--accent); color: var(--on-accent); border-radius: var(--radius); padding: 2.6rem 2.2rem; margin: 1rem 0 0; }
.band h2 { font-family: var(--font-display); font-size: 1.7rem; margin: .4rem 0 .6rem; color: var(--on-accent); }
.band p { color: var(--on-accent); opacity: .92; max-width: none; margin: 0; font-size: .95rem; }
.band .eyebrow { color: var(--on-accent); opacity: .8; }
.band .pill { border-color: color-mix(in srgb, var(--on-accent) 45%, transparent); color: var(--on-accent); }
.band .pill:hover { background: var(--on-accent); color: var(--accent); border-color: var(--on-accent); }

/* ---------- fact list ---------- */
.facts { list-style: none; margin: 0; padding: 0; }
.facts li { padding: .7rem 0; border-bottom: 1px solid var(--line); }
.facts li:last-child { border-bottom: 0; padding-bottom: 0; }
.facts li:first-child { padding-top: 0; }
.facts span { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .25rem; }
.facts div { font-size: .85rem; color: var(--ink-2); line-height: 1.45; }
.facts a { color: var(--accent); text-decoration: none; }
.facts a:hover { text-decoration: underline; }

/* ---------- cards ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.8rem 2rem; margin-top: 2rem; }
.card { border-top: 2px solid var(--ink); border-radius: 0; padding: .9rem 0 0; background: none; }
.card h3 { font-size: .98rem; margin: .5rem 0 .3rem; }
.card p { font-size: .86rem; color: var(--ink-2); margin: 0; }
.card p a { color: var(--accent); text-decoration: none; }