/* =========================================================
   Tokens — strictly black, white and greys
   ========================================================= */
:root {
  --bg: #ffffff;
  --text: #000000;
  --muted: #555555;
  --line: #000000;
  --hairline: #d9d9d9;
  --placeholder: #f2f2f2;

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --container: 1120px;
  --header-h: 60px;
  --label-w: 200px;
  --sans: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;
}

/* =========================================================
   Base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--text); color: var(--bg); }

img { max-width: 100%; display: block; }
a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.15; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 var(--space-4); }
ul, ol, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }

:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  background: var(--text);
  color: var(--bg);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-block;
  padding: .8rem 1.4rem;
  border: 1px solid var(--line);
  background: var(--text);
  color: var(--bg);
  font: inherit;
  font-weight: 500;
  font-size: .95rem;
  text-decoration: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}
.btn:hover { background: var(--bg); color: var(--text); }
.btn-outline { background: var(--bg); color: var(--text); }
.btn-outline:hover { background: var(--text); color: var(--bg); }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { font-weight: 600; text-decoration: none; }
.site-nav { display: flex; gap: var(--space-6); }
.site-nav a { text-decoration: none; font-size: .95rem; }
.site-nav a:hover,
.site-nav a[aria-current="true"] { text-decoration: underline; text-decoration-thickness: 1px; }
.nav-toggle {
  display: none;
  font: inherit;
  font-size: .9rem;
  font-weight: 500;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  padding: .35rem .8rem;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

/* =========================================================
   Intro
   ========================================================= */
.hero { padding: var(--space-8) 0 var(--space-7); }
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: end;
}
.meta {
  font-family: var(--mono);
  font-size: .85rem;
  color: var(--muted);
  margin-bottom: var(--space-4);
}
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  letter-spacing: -.035em;
  line-height: 1;
  margin-bottom: var(--space-6);
}
.lead { font-size: 1.15rem; max-width: 52ch; margin-bottom: var(--space-6); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-6); }
.inline-links { display: flex; flex-wrap: wrap; gap: var(--space-5); font-size: .95rem; }

.photo {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  background: var(--placeholder);
}
.photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 25%; filter: grayscale(1) contrast(1.05); }
.photo-fallback {
  display: none;
  position: absolute;
  inset: 0;
  place-items: center;
  background: var(--text);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 3rem;
  letter-spacing: .05em;
}
.photo.no-img .photo-fallback { display: grid; }

/* =========================================================
   Figures
   ========================================================= */
.figures {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.figures > div { padding: var(--space-5) var(--space-5) var(--space-5) 0; }
.figures > div + div { padding-left: var(--space-5); border-left: 1px solid var(--hairline); }
.figures dt { font-size: 2rem; font-weight: 600; letter-spacing: -.02em; line-height: 1.1; margin-bottom: var(--space-1); }
.figures dd { font-size: .88rem; color: var(--muted); }

/* =========================================================
   Sections: label column + body column
   ========================================================= */
.section { padding: var(--space-7) 0 0; }
.section:last-of-type { padding-bottom: var(--space-8); }
.row {
  display: grid;
  grid-template-columns: var(--label-w) 1fr;
  gap: var(--space-6);
}
.row-label {
  font-size: 1rem;
  font-weight: 600;
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
}
.row-label .num {
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: var(--space-1);
}
.row-body { padding-top: var(--space-5); border-top: 1px solid var(--line); min-width: 0; }

.prose { max-width: 68ch; }
.prose p { font-size: 1.05rem; }

/* Skills */
.skills > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-5);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--hairline);
}
.skills > div:first-child { padding-top: 0; }
.skills dt { font-family: var(--mono); font-size: .85rem; color: var(--muted); padding-top: .1rem; }

/* Experience / education entries */
.entry {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-5);
  padding: 0 0 var(--space-6);
}
.entry + .entry { padding-top: var(--space-6); border-top: 1px solid var(--hairline); }
.entry:last-child { padding-bottom: 0; }
.entry-date { font-family: var(--mono); font-size: .85rem; color: var(--muted); padding-top: .15rem; margin: 0; }
.entry h3 { margin-bottom: var(--space-1); }
.entry-org { color: var(--muted); margin-bottom: var(--space-3); }

.dash li { position: relative; padding-left: 1.25rem; margin-bottom: var(--space-2); }
.dash li::before { content: "–"; position: absolute; left: 0; }
.dash li:last-child { margin-bottom: 0; }

/* Projects */
.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-7) var(--space-6);
}
.project { display: flex; flex-direction: column; }
.project-media {
  position: relative;
  aspect-ratio: 1920 / 910;
  border: 1px solid var(--line);
  background: var(--placeholder);
  overflow: hidden;
  margin-bottom: var(--space-4);
}
.project-media img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.project-media.no-img {
  display: grid;
  place-items: center;
  background:
    repeating-linear-gradient(135deg, transparent 0 9px, var(--hairline) 9px 10px),
    var(--placeholder);
}
.project-media.no-img::after {
  content: attr(data-title);
  font-family: var(--mono);
  font-size: .85rem;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: .35rem .7rem;
}
.project-media img { cursor: zoom-in; }
.project h3 { margin-bottom: var(--space-2); }
.project h3 a { text-decoration: none; }
.project h3 a:hover { text-decoration: underline; text-decoration-thickness: 1px; }

/* ---------- Lightbox ---------- */
.lightbox {
  max-width: 96vw;
  max-height: 96vh;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--bg);
  overflow: hidden;
}
.lightbox::backdrop { background: rgba(0, 0, 0, .85); }
.lightbox img { max-width: 96vw; max-height: 92vh; width: auto; height: auto; cursor: zoom-out; }
.lightbox-close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  font: inherit;
  font-size: .9rem;
  padding: .35rem .8rem;
  border: 1px solid var(--bg);
  background: var(--text);
  color: var(--bg);
  cursor: pointer;
}
.lightbox-close:hover { background: var(--bg); color: var(--text); }
.project p { font-size: .95rem; margin-bottom: var(--space-3); }
.stack { font-family: var(--mono); font-size: .8rem !important; color: var(--muted); }
.project-link { margin-top: auto; font-size: .95rem; align-self: flex-start; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); }
.contact-list > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--hairline);
}
.contact-list > div:first-child { border-top: 1px solid var(--hairline); }
.contact-list dt { font-family: var(--mono); font-size: .85rem; color: var(--muted); padding-top: .1rem; }
.contact-list dd { overflow-wrap: anywhere; }

.contact-form label { display: block; font-family: var(--mono); font-size: .8rem; color: var(--muted); margin-bottom: var(--space-1); }
.contact-form input,
.contact-form textarea {
  display: block;
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: .65rem .8rem;
  margin-bottom: var(--space-4);
  -webkit-appearance: none;
  appearance: none;
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid var(--text); outline-offset: -2px; }
.form-error { font-size: .9rem; font-weight: 500; }
.form-error::before { content: "! "; }
.form-note { font-size: .82rem; color: var(--muted); margin: var(--space-3) 0 0; }
.form-status { font-size: .9rem; font-weight: 500; color: var(--text); }
.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.cf-turnstile { margin: var(--space-3) 0; }
.btn[disabled] { opacity: .6; cursor: wait; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: var(--space-5) 0; font-size: .9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: var(--space-4); }
.footer-inner p { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr 220px; gap: var(--space-6); }
  .row { grid-template-columns: 1fr; gap: 0; }
  .row-label { display: flex; align-items: baseline; gap: var(--space-3); padding-top: var(--space-4); }
  .row-label .num { display: inline; margin: 0; }
  .row-body { border-top: 0; padding-top: var(--space-4); }
}

@media (max-width: 760px) {
  .container { padding: 0 var(--space-4); }
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: var(--space-3) var(--space-4); border-top: 1px solid var(--hairline); }

  .hero { padding: var(--space-6) 0; }
  .hero-inner { grid-template-columns: 1fr; }
  .photo { width: 140px; order: -1; }
  .photo-fallback { font-size: 1.8rem; }
  .lead { font-size: 1.05rem; }

  .figures { grid-template-columns: repeat(2, 1fr); }
  .figures > div,
  .figures > div + div { padding: var(--space-4) var(--space-3) var(--space-4) 0; border-left: 0; }
  .figures > div:nth-child(even) { padding-left: var(--space-4); border-left: 1px solid var(--hairline); }
  .figures > div:nth-child(n+3) { border-top: 1px solid var(--hairline); }
  .figures dt { font-size: 1.5rem; }

  .skills > div, .entry { grid-template-columns: 1fr; gap: var(--space-1); }
  .projects, .contact { grid-template-columns: 1fr; gap: var(--space-6); }
  .contact-list > div { grid-template-columns: 90px 1fr; }
}