/* =========================================================================
   DESIGN TOKENS
   ========================================================================= */
:root {
  --accent: oklch(0.74 0.19 145);
  --paper:  #f1f0ec;
  --ink:    #13130f;
  --muted:  #6d6d63;
  --rule:   #d6d4cb;
  --white:  #ffffff;
}

/* =========================================================================
   RESET & BASE
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a    { color: inherit; text-decoration: none; cursor: pointer; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; }
p    { margin: 0; }
ul   { margin: 0; padding: 0; list-style: none; }

/* =========================================================================
   LAYOUT WRAPPER
   ========================================================================= */
.site {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  background: var(--paper);
}
.pad { padding-left: 48px; padding-right: 48px; }

/* =========================================================================
   NAV
   ========================================================================= */
.nav {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
  align-items: center;
  padding: 16px 48px;
  border-bottom: 1px solid var(--rule);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav-left {
  grid-column: 1 / 8;
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-left .name { color: var(--ink); font-weight: 600; letter-spacing: 0.08em; }
.nav-left .sep  { width: 1px; height: 12px; background: var(--rule); }
.nav-left .dot  {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-left .dot::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 999px;
  display: inline-block;
}
.nav-right {
  grid-column: 9 / 13;
  display: flex;
  justify-content: flex-end;
  gap: 22px;
}
.nav-right a { color: var(--ink); transition: opacity 0.15s; }
.nav-right a:hover { opacity: 0.6; }
.nav-right a.active { border-bottom: 2px solid var(--accent); padding-bottom: 2px; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
  padding: 36px 48px 28px;
}
.hero-text { grid-column: 3 / 13; }
.hero h1 {
  font-family: "Inter Tight", sans-serif;
  font-weight: 700;
  font-size: 76px;
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.hero-lede {
  font-size: 18px;
  line-height: 1.6;
  margin-top: 18px;
  max-width: 680px;
}
.hero-aside {
  grid-column: 1 / 3;
  display: grid;
  gap: 10px;
}
.hero-links {
  display: grid;
  gap: 4px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
}
.hero-links a:hover { color: var(--accent); }

/* =========================================================================
   IMAGES
   To swap a placeholder: replace the <img src="images/foo.svg"> with your
   real file. Any format (jpg, png, webp) works — just keep the same class.
   ========================================================================= */
.img-portrait {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
}
.img-slide {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
}
.carousel-slide--duo {
  display: flex;
  gap: 8px;
  background: #000;
  aspect-ratio: 4 / 3;
  align-items: center;
  justify-content: center;
}
.vid-duo {
  height: 100%;
  width: auto;
  max-width: 50%;
  object-fit: contain;
  display: block;
}

/* =========================================================================
   SIGNAL STRIP
   ========================================================================= */
.signal {
  padding: 0 48px 36px;
}
.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
}
.signal-cell {
  padding: 18px 20px 18px 0;
  border-right: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 24px 1fr;
  column-gap: 10px;
  align-items: start;
}
.signal-cell:last-child { border-right: none; }
.signal-n   { font-family: "JetBrains Mono", monospace; font-size: 10px; color: var(--accent); letter-spacing: 0.14em; padding-top: 4px; }
.signal-k   { font-family: "JetBrains Mono", monospace; font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }
.signal-v   { font-family: "Inter Tight", sans-serif; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; margin-top: 4px; }
.signal-sub { font-size: 12px; color: var(--muted); margin-top: 4px; line-height: 1.3; }

/* =========================================================================
   SECTION HEADER (shared)
   ========================================================================= */
.sec-hd {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 48px 28px;
}
.sec-hd h2 {
  font-family: "Inter Tight", sans-serif;
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.sec-hd h2 .dot { color: var(--accent); }
.sec-hd-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* =========================================================================
   PROJECT CARDS  (2-up grid)
   ========================================================================= */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 0 48px 28px;
}
.proj-card {
  border: 1px solid var(--rule);
  padding: 18px;
  background: var(--white);
  display: grid;
  gap: 14px;
}
.proj-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 8px;
}
.proj-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.proj-title {
  font-family: "Inter Tight", sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 4px;
}
.proj-org {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--ink);
  padding: 3px 6px;
  white-space: nowrap;
  align-self: start;
}

/* Carousel */
.carousel-wrap { position: relative; }
.carousel-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 100%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-slide { scroll-snap-align: start; }
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border: 1px solid var(--ink);
  background: var(--white);
  color: var(--ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.12s, color 0.12s;
}
.carousel-btn:hover { background: var(--ink); color: var(--paper); }
.carousel-btn-prev { left: 8px; }
.carousel-btn-next { right: 8px; }

/* Progress rail */
.carousel-rail {
  display: flex;
  gap: 4px;
}
.rail-seg {
  flex: 1;
  height: 2px;
  background: var(--rule);
  transition: background 0.18s;
}
.rail-seg.active { background: var(--ink); }

.proj-blurb {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
}
.proj-footer {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.proj-role {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.proj-links {
  display: flex;
  gap: 16px;
}
.proj-demo-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  transition: opacity 0.15s;
}
.proj-demo-link:hover { opacity: 0.7; }

/* =========================================================================
   PUBLICATIONS
   ========================================================================= */
.publications {
  padding: 36px 48px;
  background: var(--white);
  border-top: 2px solid var(--ink);
}
.pubs-hd {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
}
.pubs-hd h2 {
  font-family: "Inter Tight", sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.pubs-cols {
  column-count: 2;
  column-gap: 36px;
}
.pub-row {
  display: block;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  break-inside: avoid;
}
.pub-row:first-child { border-top: none; }
.pub-meta {
  display: flex;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.pub-tags {
  display: inline-flex;
  gap: 8px;
  align-items: baseline;
  white-space: nowrap;
}
.pub-tag-pill {
  background: var(--accent);
  color: var(--ink);
  padding: 1px 6px;
}
.pub-pdf { white-space: nowrap; }
.pub-title {
  font-family: "Inter Tight", sans-serif;
  font-size: 15px;
  line-height: 1.35;
  font-weight: 500;
  margin-top: 4px;
}

/* =========================================================================
   CAREER
   ========================================================================= */
.career {
  padding: 36px 48px;
}
.career-hd {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 10px;
  margin-bottom: 14px;
}
.career-hd h2 {
  font-family: "Inter Tight", sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.career-hd-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.career-row {
  display: grid;
  grid-template-columns: 120px 1fr 240px;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  align-items: baseline;
}
.career-yr {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.career-role {
  font-family: "Inter Tight", sans-serif;
  font-size: 17px;
  font-weight: 500;
}
.career-org {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-align: right;
  text-transform: uppercase;
}
.career-rule { border-top: 1px solid var(--rule); }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding: 28px 48px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  border-top: 2px solid var(--ink);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: right;
  justify-content: flex-end;
}
.footer-links a { color: var(--paper); transition: color 0.15s; }
.footer-links a:hover { color: var(--accent); }
.footer-links a.accent { color: var(--accent); }
.footer-copy { color: #85857a; font-size: 10px; }

/* =========================================================================
   RESPONSIVE — tablet (≤900px)
   ========================================================================= */
@media (max-width: 900px) {
  .nav,
  .hero,
  .signal,
  .sec-hd,
  .projects-grid,
  .publications,
  .career,
  .footer { padding-left: 24px; padding-right: 24px; }

  /* Collapse 2-col projects to 1 col */
  .projects-grid { grid-template-columns: 1fr; }

  /* Publications: single column */
  .pubs-cols { column-count: 1; }

  /* Signal strip: 4-col → 2×2 */
  .signal-grid { grid-template-columns: 1fr 1fr; }
  .signal-cell:nth-child(2n) { border-right: none; }
}

/* =========================================================================
   RESPONSIVE — mobile (≤640px)
   ========================================================================= */
@media (max-width: 640px) {
  .nav,
  .hero,
  .signal,
  .sec-hd,
  .projects-grid,
  .publications,
  .career,
  .footer { padding-left: 16px; padding-right: 16px; }

  /* Nav: stack left/right sections */
  .nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .nav-left { flex-wrap: wrap; }
  .nav-right { justify-content: flex-start; gap: 16px; }

  /* Hero: stack portrait above text */
  .hero {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 24px;
    padding-bottom: 20px;
  }
  .hero-aside { max-width: 100px; }
  .hero h1 { font-size: 44px; }
  .hero-lede { font-size: 16px; margin-top: 12px; }

  /* Section header font */
  .sec-hd h2 { font-size: 28px; }

  /* Signal strip stays 2×2, just tighter */
  .signal-grid { grid-template-columns: 1fr 1fr; }

  /* Career: year + role/org two-column layout */
  .career-row {
    grid-template-columns: 72px 1fr;
    row-gap: 1px;
  }
  .career-yr { grid-row: 1 / 3; align-self: start; }
  .career-org { text-align: left; }

  /* Footer: left-align */
  .footer { align-items: flex-start; }
  .footer-links { text-align: left; justify-content: flex-start; }
}