/* ---------- Tokens ---------- */
:root {
  --paper: #f6f1e7;
  --paper-2: #efe8da;
  --ink: #1e2a4a;
  --ink-2: #4b5573;
  --ink-3: #7c7f8f;
  --rule: #ddd4c3;
  --accent: #c2410c;
  --accent-soft: #c2410c1a;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;

  --max: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #141a2a;
    --paper-2: #1b2236;
    --ink: #ece6d8;
    --ink-2: #b9b4a8;
    --ink-3: #8a8a92;
    --rule: #2c3449;
    --accent: #f08a4b;
    --accent-soft: #f08a4b1f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #141a2a;
  --paper-2: #1b2236;
  --ink: #ece6d8;
  --ink-2: #b9b4a8;
  --ink-3: #8a8a92;
  --rule: #2c3449;
  --accent: #f08a4b;
  --accent-soft: #f08a4b1f;
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background .3s ease, color .3s ease;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
em { font-style: italic; color: var(--accent); }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; margin: 0; }
p { margin: 0; }
::selection { background: var(--accent); color: var(--paper); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--ink-3); }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 6px; z-index: 100;
}
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
.nav.scrolled { border-bottom-color: var(--rule); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-family: var(--serif); font-style: italic; font-size: 22px; text-decoration: none; }
.nav nav { display: flex; align-items: center; gap: 28px; }
.nav nav a {
  font-size: 14px; color: var(--ink-2); text-decoration: none; position: relative;
}
.nav nav a::after {
  content: ""; position: absolute; left: 0; bottom: -3px; height: 1px; width: 100%;
  background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.nav nav a:hover, .nav nav a.active { color: var(--ink); }
.nav nav a:hover::after, .nav nav a.active::after { transform: scaleX(1); }

.theme-toggle {
  background: none; border: 1px solid var(--rule); border-radius: 999px;
  width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer; color: var(--ink);
  transition: border-color .2s ease;
}
.theme-toggle:hover { border-color: var(--ink-3); }
.theme-toggle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .i-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center;
  padding-top: 72px; padding-bottom: 96px;
}
.eyebrow { font-family: var(--mono); font-size: 12px; color: var(--ink-3); letter-spacing: .02em; margin-bottom: 20px; }
.hero h1 {
  font-size: clamp(34px, 5vw, 56px); line-height: 1.12; letter-spacing: -0.01em;
}
.status { margin: 36px 0 0; display: grid; gap: 8px; font-size: 15px; }
.status div { display: grid; grid-template-columns: 56px 1fr; gap: 12px; }
.status dt { font-family: var(--mono); font-size: 12px; color: var(--ink-3); padding-top: 3px; }
.status dd { margin: 0; color: var(--ink-2); }

.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.btn {
  display: inline-block; padding: 10px 18px; border-radius: 999px; font-size: 14px;
  border: 1px solid var(--rule); text-decoration: none; color: var(--ink);
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
}
.btn:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn-ink { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-ink:hover { background: var(--accent); border-color: var(--accent); }

.hero-photo { margin: 0; position: relative; }
.hero-photo img {
  width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 4px;
  filter: saturate(.85) contrast(1.02);
  box-shadow: 0 1px 0 var(--rule);
}
.hero-photo::before {
  content: ""; position: absolute; inset: 14px -14px -14px 14px;
  border: 1px solid var(--rule); border-radius: 4px; z-index: -1;
}

/* ---------- Sections ---------- */
.section { padding-top: 56px; padding-bottom: 56px; }
.section-head {
  display: flex; align-items: baseline; gap: 16px;
  border-bottom: 1px solid var(--ink); padding-bottom: 14px; margin-bottom: 8px;
}
.section-head .num { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.section-head h2 { font-size: clamp(26px, 3vw, 34px); }

/* Work list */
.work-list { list-style: none; margin: 0; padding: 0; }
.work { border-bottom: 1px solid var(--rule); }
.work a {
  display: grid; grid-template-columns: 1fr auto; gap: 32px; padding: 28px 0;
  text-decoration: none; transition: padding .25s ease;
}
.work h3 { font-size: 24px; line-height: 1.25; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.work p { color: var(--ink-2); margin-top: 8px; max-width: 64ch; }
.work-meta { font-family: var(--mono); font-size: 13px; color: var(--ink-3); white-space: nowrap; padding-top: 6px; }
.arrow { display: inline-block; transition: transform .25s ease, color .25s ease; }
.work a:hover { padding-left: 12px; }
.work a:hover h3 { color: var(--accent); }
.work a:hover .arrow { transform: translateX(4px); color: var(--accent); }

.badge {
  font-family: var(--sans); font-size: 11px; font-weight: 500; letter-spacing: .02em;
  padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent);
}
.badge-quiet { background: var(--paper-2); color: var(--ink-2); }

.tags { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-family: var(--mono); font-size: 11px; color: var(--ink-3); border: 1px solid var(--rule); padding: 2px 8px; border-radius: 4px; }

/* More projects */
.more { margin-top: 28px; }
.more summary {
  cursor: pointer; list-style: none; font-family: var(--serif); font-size: 20px; font-style: italic;
  display: inline-flex; align-items: center; gap: 10px; color: var(--ink-2);
}
.more summary::-webkit-details-marker { display: none; }
.more summary::after { content: "+"; font-style: normal; font-family: var(--mono); font-size: 16px; transition: transform .25s ease; }
.more[open] summary::after { transform: rotate(45deg); }
.more summary:hover { color: var(--accent); }
.count { font-family: var(--mono); font-style: normal; font-size: 12px; color: var(--ink-3); }
.more-list {
  list-style: none; padding: 0; margin: 20px 0 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 40px;
}
.more-list a {
  display: flex; flex-direction: column; padding: 14px 0; border-top: 1px solid var(--rule); text-decoration: none;
}
.more-list b { font-weight: 500; font-size: 15px; }
.more-list span { font-size: 14px; color: var(--ink-3); }
.more-list a:hover b { color: var(--accent); }

/* Experience */
.role {
  display: grid; grid-template-columns: 180px 1fr; gap: 32px; padding: 32px 0; border-bottom: 1px solid var(--rule);
}
.when { font-family: var(--mono); font-size: 13px; color: var(--ink-3); padding-top: 6px; }
.role h3 { font-size: 24px; }
.org { color: var(--ink); margin-top: 4px; }
.host { font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.org-note { font-size: 14px; color: var(--ink-3); margin-top: 10px; font-style: italic; font-family: var(--serif); max-width: 60ch; }
.bullets { margin: 16px 0 0; padding-left: 18px; color: var(--ink-2); display: grid; gap: 6px; }
.bullets li::marker { color: var(--accent); }

/* Recognition */
.plain-list { list-style: none; margin: 0; padding: 0; }
.plain-list li { display: flex; flex-direction: column; gap: 2px; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.pl-title { font-family: var(--serif); font-size: 22px; }
.pl-sub { color: var(--ink-3); font-size: 14px; }
.pl-sub a { color: var(--ink-2); text-decoration-color: var(--rule); text-underline-offset: 3px; }
.pl-sub a:hover { color: var(--accent); }

/* About */
.about-intro { padding: 32px 0 8px; }
.about-intro p { font-family: var(--serif); font-size: clamp(20px, 2.2vw, 25px); line-height: 1.5; max-width: 62ch; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr 1.3fr; gap: 48px; padding-top: 32px; }
.col-title { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 14px; }
.edu { margin-bottom: 20px; font-size: 15px; color: var(--ink-2); }
.edu-name { color: var(--ink); font-weight: 500; }
.cert-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.cert-list li { display: flex; flex-direction: column; font-size: 15px; }
.cert-list b { font-weight: 500; }
.cert-list span { color: var(--ink-3); font-size: 13px; }
.skills dl { margin: 0; display: grid; gap: 4px; }
.skills dt { font-weight: 500; font-size: 14px; margin-top: 10px; }
.skills dt:first-child { margin-top: 0; }
.skills dd { margin: 0; color: var(--ink-2); font-size: 14px; }

/* Contact */
.contact { padding-bottom: 96px; }
.contact-lead { font-size: 17px; color: var(--ink-2); margin-top: 32px; }
.contact-mail {
  display: inline-block; margin-top: 12px; font-family: var(--serif); font-size: clamp(26px, 4.6vw, 52px);
  text-decoration: none; border-bottom: 1px solid var(--rule); line-height: 1.2; overflow-wrap: anywhere;
  transition: color .2s ease, border-color .2s ease;
}
.contact-mail:hover { color: var(--accent); border-color: var(--accent); }
.socials { list-style: none; padding: 0; margin: 32px 0 0; display: flex; flex-wrap: wrap; gap: 8px 24px; }
.socials a { font-size: 14px; color: var(--ink-2); text-decoration: none; }
.socials a::after { content: " ↗"; color: var(--ink-3); }
.socials a:hover { color: var(--accent); }

/* Footer */
.footer {
  display: flex; justify-content: space-between; padding-top: 24px; padding-bottom: 40px;
  border-top: 1px solid var(--rule); font-size: 13px; color: var(--ink-3);
}
.footer a { text-decoration: none; }
.footer a:hover { color: var(--accent); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0s !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
  .skills { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .nav nav { gap: 16px; }
  .nav nav a:not(.keep) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 40px; padding-bottom: 64px; }
  .hero-photo { order: -1; max-width: 220px; }
  .hero-photo img { aspect-ratio: 1; height: auto; border-radius: 50%; object-position: 50% 30%; }
  .hero-photo::before { display: none; }
  .work a { grid-template-columns: 1fr; gap: 10px; }
  .work a:hover { padding-left: 0; }
  .work-meta { padding-top: 0; order: -1; }
  .work h3 { font-size: 21px; }
  .more-list { grid-template-columns: 1fr; }
  .role { grid-template-columns: 1fr; gap: 6px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer { flex-direction: column; gap: 8px; }
  .contact-mail { font-size: 5.8vw; }
}