:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --ink: #16181d;
  --muted: #5c6370;
  --line: #e2e0d8;
  --accent: #0f7b6c;
  --accent-2: #c2541a;
  --code-bg: #efede6;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --surface: #161a1f;
    --ink: #e8e6e1;
    --muted: #9aa3ad;
    --line: #262b32;
    --accent: #3cc9b0;
    --accent-2: #f08a4b;
    --code-bg: #1c2128;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap; }
.brand { font-family: var(--mono); font-weight: 600; color: var(--ink); letter-spacing: -0.02em; font-size: 18px; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a.active { color: var(--ink); text-decoration: none; }

/* hero */
.hero { padding: 72px 0 8px; }
.hero + h2 { margin-top: 32px; }
.eyebrow { font-family: var(--mono); font-size: 13px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); margin: 0 0 14px; }
h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(32px, 5vw, 48px); line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 18px; }
h2 { font-family: var(--serif); font-weight: 600; font-size: 28px; line-height: 1.2; margin: 56px 0 16px; }
h3 { font-size: 18px; margin: 28px 0 8px; }
.lede { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0; }
.hero-wave { width: 100%; height: 90px; margin-top: 36px; display: block; }

.btn-row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; border: 1px solid var(--line); color: var(--ink); font-size: 15px; background: var(--surface); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:hover { text-decoration: none; filter: brightness(1.05); }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 6px; color: var(--ink); }
a.card:hover { text-decoration: none; border-color: var(--accent); }
.card .tag { font-family: var(--mono); font-size: 12px; color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.08em; }
.card h3 { margin: 4px 0 2px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .soon { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-top: auto; padding-top: 8px; }

/* prose */
.prose { max-width: 700px; }
.prose p, .prose li { color: var(--ink); }
.muted { color: var(--muted); }
code { font-family: var(--mono); font-size: 0.9em; background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
.meta { font-family: var(--mono); font-size: 13px; color: var(--muted); }

/* cv */
.cv-item { display: grid; grid-template-columns: 140px 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.cv-item .when { font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 3px; }
.cv-item p { margin: 2px 0 0; color: var(--muted); font-size: 15px; }
@media (max-width: 560px) { .cv-item { grid-template-columns: 1fr; gap: 2px; } }
.pills { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.pills li { font-size: 14px; border: 1px solid var(--line); background: var(--surface); padding: 4px 12px; border-radius: 999px; }

/* sim */
.sim { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 28px 0; }
.sim canvas { width: 100%; height: 200px; display: block; }
.sim-label { font-family: var(--mono); font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 14px 0 4px; }
.controls { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px 24px; margin-top: 18px; }
.controls label { font-size: 14px; display: flex; flex-direction: column; gap: 4px; }
.controls .val { font-family: var(--mono); color: var(--accent); }
.controls input[type=range] { width: 100%; accent-color: var(--accent); }

.sim-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn-small { font: 13px var(--mono); padding: 5px 12px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); cursor: pointer; }
.btn-small:hover { border-color: var(--accent); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.seg button { font: 13px var(--mono); padding: 6px 12px; border: 0; background: var(--bg); color: var(--muted); cursor: pointer; }
.seg button.on { background: var(--accent); color: #fff; }
.c-accent { color: var(--accent); font-weight: 600; }
.c-accent2 { color: var(--accent-2); font-weight: 600; }
.c-ghost { color: var(--muted); font-weight: 600; }
.callout { border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; margin: 20px 0; color: var(--ink); }
.ref-list { list-style: none; padding: 0; }
.ref-list li { padding: 14px 0; border-top: 1px solid var(--line); }
.ref-list .what { display: block; color: var(--muted); font-size: 15px; margin-top: 2px; }

.downloads { list-style: none; padding: 0; }
.downloads li { padding: 10px 0; border-top: 1px solid var(--line); font-size: 15px; }

/* ---------- CV page: sticky left column ---------- */
.cv-layout { display: grid; grid-template-columns: 300px 1fr; gap: 64px; padding-top: 56px; }
.cv-side { position: sticky; top: 40px; align-self: start; }
.cv-side h1 { font-size: 36px; margin-bottom: 8px; }
.cv-side .role { font-size: 17px; color: var(--ink); margin: 0 0 12px; font-weight: 600; }
.cv-side .bio { color: var(--muted); font-size: 15px; margin: 0 0 28px; }
.toc { list-style: none; padding: 0; margin: 0 0 28px; }
.toc a { display: flex; align-items: center; gap: 12px; padding: 6px 0; color: var(--muted); font: 12px var(--mono); text-transform: uppercase; letter-spacing: 0.12em; }
.toc a::before { content: ""; width: 24px; height: 1px; background: var(--muted); transition: width .2s, background .2s; }
.toc a:hover, .toc a.on { color: var(--ink); text-decoration: none; }
.toc a.on::before, .toc a:hover::before { width: 56px; background: var(--accent); }
.social { display: flex; gap: 16px; font-size: 14px; }
.cv-main section { scroll-margin-top: 32px; margin-bottom: 64px; }
.cv-main h2 { margin-top: 0; font-size: 13px; font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); font-weight: 600; }
.cv-main p { margin-top: 0; }

.job { display: grid; grid-template-columns: 130px 1fr; gap: 20px; padding: 18px; margin: 0 -18px 8px; border-radius: 10px; border: 1px solid transparent; transition: background .2s, border-color .2s; }
.job:hover { background: var(--surface); border-color: var(--line); }
.job .when { font: 12px/1.9 var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.job h3 { margin: 0 0 2px; font-size: 17px; }
.job .org { color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.job ul { margin: 0 0 10px; padding-left: 18px; color: var(--muted); font-size: 15px; }
.job li { margin-bottom: 4px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 6px 0 0; list-style: none; }
.tags li { font: 12px var(--mono); color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 3px 10px; border-radius: 999px; }

.skill-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.skill-grid h3 { margin: 0 0 6px; font-size: 15px; }
.skill-grid p { color: var(--muted); font-size: 14.5px; margin: 0; }

@media (max-width: 860px) {
  .cv-layout { grid-template-columns: 1fr; gap: 24px; padding-top: 40px; }
  .cv-side { position: static; }
  .toc { display: none; }
}
@media (max-width: 560px) {
  .job { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- home extras ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-top: 8px; }
.stat { background: var(--surface); padding: 18px 20px; }
.stat b { display: block; font: 600 26px/1.2 var(--serif); }
.stat span { font-size: 13px; color: var(--muted); }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.now { list-style: none; padding: 0; margin: 0; }
.now li { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 15.5px; }
.now li .k { font: 12px/2 var(--mono); color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; }
.log { list-style: none; padding: 0; margin: 0; font-size: 15px; }
.log li { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 8px 0; }
.log time { font: 13px var(--mono); color: var(--muted); }
.card .status { font: 12px var(--mono); color: var(--muted); margin-top: auto; padding-top: 10px; }

/* footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 28px 0 40px; font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }