/* ---------- Tokens ---------- */
:root {
  --bg: #f6f3ec;
  --bg-alt: #efeadf;
  --surface: #fffdf8;
  --ink: #141a2b;
  --ink-soft: #4b5368;
  --line: #ddd6c6;
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --accent-soft: #e3e9fb;
  --shadow: 0 1px 2px rgba(20, 26, 43, .06), 0 12px 32px -16px rgba(20, 26, 43, .25);

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 14px;
  --gutter: clamp(16px, 5vw, 40px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1320; --bg-alt: #121929; --surface: #161e31; --ink: #eef0f6; --ink-soft: #a8b0c4;
    --line: #26304a; --accent: #7ea2ff; --accent-ink: #0b1020; --accent-soft: #1a2747;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -16px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"] {
  --bg: #0e1320; --bg-alt: #121929; --surface: #161e31; --ink: #eef0f6; --ink-soft: #a8b0c4;
  --line: #26304a; --accent: #7ea2ff; --accent-ink: #0b1020; --accent-soft: #1a2747;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -16px rgba(0,0,0,.7);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; margin: 0; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.wrap { width: min(1120px, 100% - 2 * var(--gutter)); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav__inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.nav__brand { font: 600 1.4rem var(--serif); color: var(--ink); text-decoration: none; }
.nav__brand span { color: var(--accent); }
.nav nav { margin-left: auto; }
.nav__links { display: flex; gap: 22px; }
.nav__links a { color: var(--ink-soft); text-decoration: none; font-size: .95rem; padding: 6px 0; border-bottom: 2px solid transparent; }
.nav__links a:hover, .nav__links a.active { color: var(--ink); border-color: var(--accent); }
.theme { background: none; border: 1px solid var(--line); color: var(--ink); width: 38px; height: 38px; border-radius: 50%; cursor: pointer; display: grid; place-items: center; }
.theme:hover { background: var(--accent-soft); }
@media (max-width: 760px) {
  .nav__inner { gap: 10px; }
  .nav nav { margin-left: auto; overflow-x: auto; scrollbar-width: none; }
  .nav nav::-webkit-scrollbar { display: none; }
  .nav__links { gap: 16px; }
  .nav__links a { font-size: .88rem; white-space: nowrap; }
}

/* ---------- Hero ---------- */
.hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(28px, 6vw, 80px); align-items: center; padding-block: clamp(40px, 8vw, 96px) clamp(32px, 5vw, 56px); }
.eyebrow { font: 500 .82rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.5rem, 6.4vw, 4.6rem); font-weight: 400; letter-spacing: -.02em; }
.hero h1 .post { color: var(--ink-soft); font-size: .55em; font-style: italic; }
.hero__role { font: 500 clamp(1.1rem, 2.2vw, 1.4rem) var(--sans); margin: 18px 0 20px; }
.hero__role i { font-family: var(--serif); color: var(--accent); }
.hero__lede { max-width: 56ch; color: var(--ink-soft); font-size: 1.15rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; border: 1.5px solid var(--ink); color: var(--ink); text-decoration: none; font-weight: 500; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-2px); background: var(--accent-soft); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--accent); filter: brightness(1.1); }
.social { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.social a { color: var(--ink); font: 500 .9rem var(--mono); text-decoration: none; border-bottom: 1px solid var(--line); }
.social a:hover { border-color: var(--accent); color: var(--accent); }

.hero__photo { margin: 0; position: relative; justify-self: center; width: min(100%, 420px); }
.hero__photo::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; border: 2px solid var(--accent); border-radius: 28px; z-index: 0; }
.hero__photo img { position: relative; z-index: 1; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 28px; background: #fff; box-shadow: var(--shadow); }
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .hero__photo { order: -1; width: min(70%, 300px); justify-self: start; margin: 0 0 28px; }
}

/* ---------- Stats ---------- */
.stats dl { margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.stats div { padding: 26px 22px; border-right: 1px solid var(--line); display: flex; flex-direction: column-reverse; justify-content: flex-end; gap: 6px; }
.stats div:last-child { border-right: 0; }
.stats dd { margin: 0; font: 400 clamp(2.2rem, 4vw, 3.2rem)/1 var(--serif); }
.stats dd small { font-size: .45em; color: var(--ink-soft); margin-left: 2px; }
.stats dt { color: var(--ink-soft); font-size: .88rem; line-height: 1.4; }
@media (max-width: 760px) {
  .stats dl { grid-template-columns: 1fr 1fr; }
  .stats div:nth-child(2) { border-right: 0; }
  .stats div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stats div { padding: 20px 14px; }
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(56px, 9vw, 104px) 0; }
.section__title { font-size: clamp(1.8rem, 3.6vw, 2.5rem); margin-bottom: 36px; display: flex; align-items: baseline; gap: 14px; }
.section__title span { font: 500 .9rem var(--mono); color: var(--accent); letter-spacing: .05em; }

.about { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(24px, 5vw, 72px); }
.about__lead { font: 400 clamp(1.5rem, 3vw, 2.1rem)/1.25 var(--serif); }
.about p { color: var(--ink-soft); }
@media (max-width: 820px) { .about { grid-template-columns: 1fr; } }

/* ---------- Project cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s, border-color .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.card--feature { grid-column: 1 / -1; background: var(--accent-soft); border-color: transparent; }
.card--feature h3 { font-size: 1.9rem; }
.card--feature > p:not(.card__date) { max-width: 70ch; font-size: 1.08rem; }
.card h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card p { color: var(--ink-soft); }
.card__date { font: 500 .78rem var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent) !important; margin-bottom: 10px !important; }
.card__link { margin-top: auto; font-weight: 500; text-decoration: none; padding-top: 14px; }
.card__link:hover span { display: inline-block; transform: translateX(4px); }
.more { margin-top: 24px; font-weight: 500; }
@media (max-width: 760px) { .cards { grid-template-columns: 1fr; } }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 6px; }
.tags li { font: 500 .78rem var(--mono); padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg); color: var(--ink); }
.card--feature .tags li { background: var(--surface); }
.tags--lg li { font-size: .88rem; padding: 6px 14px; background: var(--accent-soft); border-color: transparent; }

/* ---------- Timeline ---------- */
.timeline { border-left: 2px solid var(--line); margin-left: 6px; }
.job { display: grid; grid-template-columns: 190px 1fr; gap: 12px 32px; padding: 0 0 40px 32px; position: relative; }
.job::before { content: ""; position: absolute; left: -7px; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.job:first-child::before { background: var(--accent); }
.job__when { font: 500 .82rem/1.5 var(--mono); color: var(--ink-soft); margin: 4px 0 0; }
.job h3 { font-size: 1.35rem; }
.job__org { color: var(--accent); font-weight: 500; margin: 4px 0 12px; }
.job__org em { color: var(--ink-soft); font-weight: 400; }
.job ul { display: grid; gap: 6px; }
.job li { position: relative; padding-left: 18px; color: var(--ink-soft); }
.job li::before { content: ""; position: absolute; left: 0; top: .72em; width: 8px; height: 1.5px; background: var(--accent); }
@media (max-width: 760px) { .job { grid-template-columns: 1fr; padding-left: 22px; } .job__when { margin: 0; } }

.earlier { margin-top: 8px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.earlier summary { cursor: pointer; padding: 16px 22px; font-weight: 500; list-style: none; display: flex; align-items: center; gap: 10px; }
.earlier summary::-webkit-details-marker { display: none; }
.earlier summary::before { content: "+"; font: 500 1.3rem var(--mono); color: var(--accent); width: 1ch; }
.earlier[open] summary::before { content: "–"; }
.earlier summary span { color: var(--ink-soft); font-weight: 400; }
.timeline--compact { margin: 12px 0 0 28px; padding-top: 8px; }
.earlier[open] { padding-bottom: 12px; }

/* ---------- Education ---------- */
.edu { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.edu__item { border-top: 2px solid var(--ink); padding-top: 16px; }
.edu__item h3 { font-size: 1.25rem; margin: 6px 0; }
.edu__item p { color: var(--ink-soft); margin-bottom: .5em; }
.edu__item .job__org { color: var(--accent); }
.edu__badge { display: inline-block; background: var(--accent-soft); color: var(--ink) !important; font: 500 .8rem var(--mono); padding: 4px 12px; border-radius: 999px; }
@media (max-width: 760px) { .edu { grid-template-columns: 1fr; } }

.subhead { font-size: 1.4rem; margin: 56px 0 18px; }
.certs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.certs li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; display: flex; flex-direction: column; gap: 4px; }
.certs span { color: var(--ink-soft); font-size: .95rem; }
.certs a { font-weight: 500; margin-top: 6px; }
@media (max-width: 760px) { .certs { grid-template-columns: 1fr; } }

/* ---------- Skills ---------- */
.skills { display: grid; gap: 28px; }
.skills h3 { font: 500 .8rem var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); margin-bottom: 12px; }

/* ---------- Contact ---------- */
.contact { text-align: left; }
.contact__lead { font: 400 clamp(1.4rem, 3vw, 2rem)/1.3 var(--serif); max-width: 28ch; }
.contact__mail { font: 400 clamp(1.1rem, 3.2vw, 2.1rem) var(--serif); word-break: break-word; }
.contact .social { margin-top: 20px; }

.footer { margin-top: clamp(64px, 10vw, 120px); border-top: 1px solid var(--line); padding-block: 28px; color: var(--ink-soft); font-size: .9rem; }
.footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }
.footer p { margin: 0; }

/* ---------- Motion ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
.card.reveal.in:hover { transform: translateY(-4px); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0s !important; }
}
@media print { .nav, .theme, .hero__cta { display: none; } .reveal { opacity: 1; transform: none; } }