:root {
  --bg: #fbfcfd;
  --surface: #f1f4f7;
  --ink: #15202b;
  --ink-soft: #4a5866;
  --ink-faint: #6f7c89;
  --rule: #dde3e9;
  --accent: #1f5f8b;
  --accent-soft: #e3eef6;
  --ok: #2c7a4b;
  --ok-soft: #e2f2e8;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f151b;
    --surface: #172029;
    --ink: #e6ebf0;
    --ink-soft: #a9b5c1;
    --ink-faint: #8290a0;
    --rule: #26323e;
    --accent: #7fb6dd;
    --accent-soft: #1a2b3a;
    --ok: #7dcf9f;
    --ok-soft: #173024;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
section[id], h2[id], h3[id] { scroll-margin-top: 24px; }

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 40px 96px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 72px;
}

/* Sidebar */
.intro { position: sticky; top: 72px; align-self: start; }
.monogram {
  width: 56px; height: 56px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--serif);
  font-size: 22px; font-weight: 600;
  margin-bottom: 28px;
  text-decoration: none;
}
h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 44px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.tagline { color: var(--ink-soft); margin: 0 0 28px; }

.jump { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0 0 28px; padding: 0; list-style: none; font-size: 15px; }
.jump a { color: var(--ink-soft); text-decoration: none; }
.jump a:hover { color: var(--accent); text-decoration: underline; }

.contact { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.contact li { border-bottom: 1px solid var(--rule); }
.contact a {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 4px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  overflow-wrap: anywhere;
  border-radius: 4px;
}
.contact a::after { content: "→"; margin-left: auto; color: var(--ink-faint); transition: transform .15s; }
.contact a:hover { color: var(--accent); background: var(--surface); }
.contact a:hover::after { color: var(--accent); transform: translateX(3px); }
.contact svg { flex: none; width: 18px; height: 18px; color: var(--ink-faint); }
.contact a:hover svg { color: var(--accent); }

/* Main */
main > section + section { margin-top: 64px; }
h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  margin: 0 0 24px;
  display: flex; align-items: baseline; gap: 14px;
}
h2::after { content: ""; flex: 1; height: 1px; background: var(--rule); transform: translateY(-6px); }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute;
  left: 5px; top: 10px; bottom: 10px;
  width: 1px; background: var(--rule);
}
.timeline > li { position: relative; padding-left: 32px; }
.timeline > li + li { margin-top: 28px; }
.timeline > li::before {
  content: ""; position: absolute;
  left: 0; top: 8px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--ink-faint);
}
.timeline > li.current::before { background: var(--accent); border-color: var(--accent); }
.role { font-weight: 600; font-size: 17px; margin: 0; }
.org { margin: 2px 0 0; color: var(--ink-soft); }
.org a { color: inherit; }
.org a:hover { color: var(--accent); }
.when { margin: 2px 0 0; font-size: 14px; color: var(--ink-faint); font-variant-numeric: tabular-nums; }
.badge {
  display: inline-block; margin-left: 8px;
  padding: 1px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  font-size: 12px; font-weight: 500; vertical-align: 2px;
}
.badge.ok { background: var(--ok-soft); color: var(--ok); }

/* Social media */
.intro-text { color: var(--ink-soft); margin: 0 0 20px; max-width: 62ch; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat { background: var(--surface); border-radius: 6px; padding: 16px; }
.stat .num { margin: 0; font-family: var(--serif); font-size: 32px; line-height: 1.1; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat .label { margin: 6px 0 0; font-size: 14px; color: var(--ink-soft); line-height: 1.4; }
.highlights { margin: 20px 0 0; padding-left: 20px; color: var(--ink-soft); }
.highlights li + li { margin-top: 6px; }
.highlights strong { color: var(--ink); font-weight: 600; }
.source { margin: 12px 0 0; font-size: 13px; color: var(--ink-faint); }

/* Education */
.edu { display: grid; gap: 24px; }
.edu-item { display: grid; grid-template-columns: 1fr auto; gap: 4px 24px; }
.edu-item .degree { font-weight: 600; font-size: 17px; margin: 0; }
.edu-item .school { margin: 0; color: var(--ink-soft); grid-column: 1; }
.edu-item .school a { color: inherit; }
.edu-item .school a:hover { color: var(--accent); }
.edu-item .when { grid-column: 2; grid-row: 1; margin: 0; align-self: baseline; text-align: right; }
.edu-item .note { grid-column: 2; grid-row: 2; margin: 0; font-size: 14px; color: var(--accent); text-align: right; }

/* Skills */
.skills { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.skills li {
  padding: 6px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 14px;
}

/* Projects */
.projects { display: grid; gap: 20px; }
.project {
  padding: 22px 24px;
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
}
.project h3 { font-size: 18px; font-weight: 600; margin: 0; }
.project .meta { margin: 2px 0 0; font-size: 14px; color: var(--ink-faint); }
.project p.desc { margin: 10px 0 0; color: var(--ink-soft); }
.project ul.points { margin: 10px 0 0; padding-left: 20px; color: var(--ink-soft); }
.project ul.points li + li { margin-top: 4px; }
.tech { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 14px; color: var(--ink-faint); margin: 14px 0 0; padding: 0; list-style: none; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--rule);
  background: var(--bg);
  color: var(--ink);
  font-size: 14px; font-weight: 500;
  text-decoration: none;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn.primary:hover { filter: brightness(1.1); color: var(--bg); }

footer { margin-top: 80px; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 14px; color: var(--ink-faint); }

/* Document pages (requirements etc.) */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 40px 96px; }
.crumb { font-size: 15px; margin: 0 0 32px; }
.crumb a { text-decoration: none; }
.crumb a:hover { text-decoration: underline; }
.doc h1 { font-size: 40px; margin-bottom: 8px; }
.doc .sub { color: var(--ink-soft); margin: 0 0 20px; font-size: 17px; }
.doc .docmeta { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14px; color: var(--ink-faint); margin: 0 0 40px; padding: 0 0 24px; border-bottom: 1px solid var(--rule); list-style: none; }
.doc h2 { margin-top: 48px; }
.doc h3 { font-size: 17px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--ink-soft); }
.doc strong { color: var(--ink); font-weight: 600; }
.doc ol, .doc ul { padding-left: 22px; }
.doc li + li { margin-top: 6px; }
.doc code { font-size: 0.9em; background: var(--surface); padding: 1px 5px; border-radius: 4px; }
.doc .toc { background: var(--surface); padding: 16px 20px; border-radius: 6px; font-size: 15px; }
.doc .toc ol { margin: 6px 0 0; }
.doc .toc li { margin-top: 2px; }

.table-wrap { overflow-x: auto; margin: 12px 0 0; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--ink); border-bottom-width: 2px; }
td { color: var(--ink-soft); }

/* Responsive */
@media (max-width: 860px) {
  .page { grid-template-columns: 1fr; gap: 48px; padding: 48px 24px 72px; }
  .intro { position: static; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 38px; }
  .doc { padding: 40px 24px 72px; }
}
@media (max-width: 480px) {
  .page { padding: 36px 16px 56px; }
  .doc { padding: 32px 16px 56px; }
  h1, .doc h1 { font-size: 32px; }
  h2 { font-size: 23px; }
  .edu-item { grid-template-columns: 1fr; }
  .edu-item .when, .edu-item .note { grid-column: 1; grid-row: auto; text-align: left; }
  .project { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .contact a::after { transition: none; }
}

/* ---- Clickable project cards ---- */
.project h3 a { color: inherit; text-decoration: none; }
.project h3 a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a.stat { display: block; text-decoration: none; color: inherit; border: 1px solid transparent; transition: border-color .15s; }
a.stat:hover { border-color: var(--accent); }
a.stat:hover .label { color: var(--accent); }
.more-link { display: inline-block; margin-top: 16px; font-weight: 500; }

/* ---- Case study pages ---- */
.case { max-width: 820px; }
.case .lede { font-size: 18px; color: var(--ink-soft); margin: 0 0 24px; }
.case figure { margin: 24px 0; }
.case figure img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--rule); display: block; }
.case figcaption { font-size: 14px; color: var(--ink-faint); margin-top: 8px; }
.case .stats { margin: 8px 0 8px; }
.case .actions { margin: 0 0 32px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 56px; }
.pager a { display: block; padding: 16px 18px; border: 1px solid var(--rule); border-radius: 8px; text-decoration: none; color: var(--ink); }
.pager a:hover { border-color: var(--accent); }
.pager small { display: block; color: var(--ink-faint); font-size: 13px; }
.pager .next { text-align: right; grid-column: 2; }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0 8px; list-style: none; padding: 0; counter-reset: step; }
.flow li { background: var(--surface); border-radius: 8px; padding: 14px; font-size: 15px; color: var(--ink-soft); position: relative; }
.flow li strong { display: block; color: var(--ink); margin-bottom: 4px; }
.flow li::before { counter-increment: step; content: counter(step); display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: var(--bg); font-size: 12px; font-weight: 600; margin-bottom: 8px; }

/* ---- Charts ---- */
.viz {
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100;
  background: var(--surface); border-radius: 10px; padding: 20px; margin: 16px 0 24px; position: relative;
}
@media (prefers-color-scheme: dark) {
  .viz { --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; }
}
.viz h3 { margin: 0; font-size: 17px; }
.viz .viz-sub { margin: 2px 0 16px; font-size: 14px; color: var(--ink-faint); }
.legend-row { display: flex; flex-wrap: wrap; gap: 6px 18px; list-style: none; margin: 0 0 14px; padding: 0; font-size: 14px; color: var(--ink-soft); }
.legend-row i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.bars { display: grid; gap: 14px; }
.bar-row { display: grid; grid-template-columns: 170px 1fr; gap: 12px; align-items: center; }
.bar-row .who { font-size: 14px; line-height: 1.3; }
.bar-row .who small { display: block; color: var(--ink-faint); font-size: 12px; }
.stack { display: flex; gap: 2px; height: 28px; }
.seg {
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 12px; font-weight: 600; min-width: 0; overflow: hidden; white-space: nowrap;
  cursor: default;
}
.seg:first-child { border-radius: 4px 0 0 4px; }
.seg:last-child { border-radius: 0 4px 4px 0; }
.seg:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }
.seg.dark-text { color: #15202b; }
.single { display: flex; align-items: center; gap: 10px; }
.single .fill { height: 20px; border-radius: 0 4px 4px 0; background: var(--series-1); }
.single .val { font-size: 14px; font-weight: 600; font-variant-numeric: tabular-nums; }
.axis-note { font-size: 13px; color: var(--ink-faint); margin: 12px 0 0; }
.tip {
  position: absolute; pointer-events: none; z-index: 2;
  background: var(--ink); color: var(--bg); font-size: 13px; line-height: 1.4;
  padding: 6px 10px; border-radius: 6px; white-space: nowrap; transform: translate(-50%, calc(-100% - 10px));
}
.viz details { margin-top: 14px; font-size: 14px; }
.viz summary { cursor: pointer; color: var(--accent); }
.viz table { margin-top: 8px; font-size: 14px; }

@media (max-width: 640px) {
  .flow { grid-template-columns: 1fr 1fr; }
  .bar-row { grid-template-columns: 1fr; gap: 6px; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}
.doc .flow, .doc .legend-row, .doc .actions, .doc .docmeta { padding-left: 0; }
.doc .flow li + li, .doc .legend-row li + li, .doc .actions li + li, .doc .docmeta li + li { margin-top: 0; }

/* Headshot, about, duties */
.headshot { display: block; width: 112px; height: 112px; margin-bottom: 24px; border-radius: 50%; overflow: hidden; box-shadow: 0 0 0 4px var(--accent-soft); }
.headshot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about { color: var(--ink-soft); margin: 0 0 12px; max-width: 62ch; font-size: 17px; }
.duties { list-style: disc; margin: 8px 0 0; padding-left: 18px; color: var(--ink-soft); font-size: 15px; }
.duties li + li { margin-top: 4px; }
.edu-item .detail { grid-column: 1 / -1; margin: 4px 0 0; font-size: 15px; color: var(--ink-soft); }
.tools { margin: 16px 0 0; font-size: 15px; color: var(--ink-soft); }
.tools strong { color: var(--ink); font-weight: 600; }
@media (max-width: 480px) { .edu-item .detail { grid-row: auto; } }

/* Accounts I manage */
.accounts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 12px 0 8px; }
.acct { background: var(--surface); border-radius: 8px; padding: 16px; }
.acct-name { margin: 0; font-weight: 600; color: var(--ink); }
.acct-type { margin: 0 0 10px; font-size: 14px; color: var(--ink-faint); }
.doc .pills, .pills { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.doc .pills li + li { margin-top: 0; }
.pills a { display: inline-block; padding: 4px 10px; border: 1px solid var(--rule); border-radius: 999px; font-size: 13px; text-decoration: none; color: var(--ink); background: var(--bg); }
.pills a:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 640px) { .accounts { grid-template-columns: 1fr; } }
.doc .acct-name { color: var(--ink); }