/* ---------- Font (self-hosted Inter, SIL Open Font License) ---------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url("assets/fonts/inter-var.woff2") format("woff2");
}

/* ---------- Tokens ---------- */
:root {
  color-scheme: light;
  --bg: #fafaf9;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --ring: rgba(11, 11, 11, 0.10);
  --raised: #ffffff;
  --past: #c3c2b7;

  /* categorical, fixed order (validated: scripts/validate_palette.js) */
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #eda100;
  --s5: #e87ba4;

  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 76rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --nav-h: 4rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121211;
    --ink: #f4f4f2;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --ring: rgba(255, 255, 255, 0.10);
    --raised: #1a1a19;
    --past: #4a4a46;

    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --s5: #d55181;
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}
/* Never scroll sideways. clip (not hidden) so the pinned project sections keep working. */
html, body { overflow-x: clip; max-width: 100%; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
:focus-visible { outline: 2px solid var(--s1); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.03em; line-height: 1.05; text-wrap: balance; }
p { margin: 0 0 1em; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
code { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: 0.9em; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  padding: 0.5rem 1rem; border-radius: 6px;
  background: var(--ink); color: var(--bg);
}
.skip:focus { top: 1rem; }

.label, .eyebrow {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}

/* decorative canvas behind everything (background.js) */
.backdrop { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.nav__name { font-weight: 600; letter-spacing: -0.02em; text-decoration: none; }
.nav__links { display: flex; gap: clamp(1rem, 3vw, 2rem); font-size: 0.9375rem; }
.nav__links a { text-decoration: none; color: var(--ink-2); }
.nav__links a:hover { color: var(--ink); }
.nav__links .nav__resume { color: var(--ink); font-weight: 500; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.45em;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--grid);
  border-radius: 10px;
  background: var(--raised);
  color: var(--ink);
  font-size: 0.9375rem; font-weight: 500;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.btn:hover { border-color: var(--axis); }
.btn--solid { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn--solid:hover { background: var(--s1); border-color: var(--s1); color: #fff; }
.btn--lg { padding: 0.85rem 1.4rem; font-size: 1rem; }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(4rem, 11vw, 8rem) clamp(3rem, 7vw, 5rem); }
.eyebrow { margin-bottom: 1.5rem; }
.hero__title {
  font-size: clamp(2.6rem, 6.4vw, 5.25rem);
  letter-spacing: -0.045em;
  line-height: 1;
  max-width: 16ch;
}
.hero__lede {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  max-width: 38rem;
  font-size: clamp(1.075rem, 1.5vw, 1.2rem);
  color: var(--ink-2);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }


/* ---------- Section heads ---------- */
.section-head { display: grid; gap: 0.75rem; padding-top: clamp(3rem, 7vw, 5rem); margin-bottom: clamp(1rem, 3vw, 2rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.8vw, 2.9rem); max-width: 24ch; }

/* ---------- Stories (pinned scroll sections) ---------- */
.story { position: relative; }
.story__pin { display: flex; flex-direction: column; padding-block: 2.5rem 1rem; }
.story__text {
  display: grid;
  gap: 1.5rem 3rem;
  align-items: end;
}
@media (min-width: 900px) {
  .story__text { grid-template-columns: minmax(0, 1fr) auto; }
}

/* Pin on screens big enough to hold the text and the chart at once. */
@media (min-width: 900px) and (min-height: 640px) and (prefers-reduced-motion: no-preference) {
  .story { height: 215vh; }
  .story__pin {
    position: sticky;
    top: var(--nav-h);
    height: calc(100vh - var(--nav-h));
    height: calc(100svh - var(--nav-h));
    padding-block: clamp(1.5rem, 4vh, 3rem) 1rem;
  }
  .story .viz { flex: 1; min-height: 0; }
  .story .viz__plot { flex: 1; min-height: 0; height: auto; }
}

.story h3 { font-size: clamp(1.9rem, 3.6vw, 2.75rem); }
.project__kind { margin: 0.4rem 0 0.9rem; font-size: 0.9375rem; color: var(--muted); }
.project__desc { max-width: 44rem; color: var(--ink-2); margin-bottom: 0.9rem; }
.project__links { display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 0.9375rem; font-weight: 500; }
.project__links a { text-decoration: underline; text-decoration-color: var(--axis); }
.project__links a:hover { text-decoration-color: currentColor; }

.readout { display: flex; flex-direction: column; align-items: flex-start; min-width: 14rem; }
@media (min-width: 900px) { .readout { align-items: flex-end; text-align: right; } }
.readout__big { font-size: clamp(2.75rem, 5vw, 4rem); font-weight: 600; letter-spacing: -0.045em; line-height: 1; }
.readout__label { font-size: 0.875rem; color: var(--ink-2); margin-top: 0.35rem; }

/* ---------- Charts ---------- */
.viz { margin: 1.25rem 0 0; display: flex; flex-direction: column; }
.viz__plot { position: relative; width: 100%; height: 300px; touch-action: pan-y; overflow-x: clip; }
.viz__plot:focus-visible { outline-offset: -2px; }
.viz__plot svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.viz__caption { margin-top: 0.6rem; font-size: 0.8125rem; color: var(--muted); line-height: 1.5; }
.viz__caption code { color: var(--ink-2); }

[data-chart="vg"] { height: 320px; }
[data-chart="books"] { height: 300px; }
[data-chart="fs"] { height: 340px; }

.viz__legend { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; margin-bottom: 0.75rem; font-size: 0.8125rem; color: var(--ink-2); }
.viz__legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.viz__legend i { width: 9px; height: 9px; border-radius: 50%; }
.viz__legend b { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }

/* svg chrome */
.ax-text { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.ax-text--strong { fill: var(--ink-2); font-weight: 500; }
.gridline { stroke: var(--grid); stroke-width: 1; shape-rendering: crispEdges; }
.axis-line { stroke: var(--axis); stroke-width: 1; shape-rendering: crispEdges; }
.baseline { stroke: var(--ink); stroke-width: 2; stroke-linecap: round; }

.arc { fill: none; stroke: var(--s1); stroke-width: 1.5; stroke-linecap: round; opacity: 0.55; }
.arc.is-hot { stroke-width: 2.5; opacity: 1; }
.arcs.has-hot .arc:not(.is-hot) { opacity: 0.18; }
.commit { fill: var(--s1); opacity: 0; transform-box: fill-box; transform-origin: center; transition: opacity 0.2s, transform 0.2s; }
.commit.is-on { opacity: 0.9; }
.commit.is-hot { fill: var(--ink); opacity: 1; transform: scale(1.6); }
.arcs.has-hot .commit.is-on:not(.is-hot) { opacity: 0.12; }

.dot { stroke: var(--bg); stroke-width: 2; transform-box: fill-box; transform-origin: center; transform: scale(0); opacity: 0; transition: transform 0.35s cubic-bezier(.3,1.6,.5,1), opacity 0.2s; }
.dot.is-on { transform: scale(1); opacity: 1; }
.dot.is-hot { stroke: var(--ink); }

.hub { fill: var(--ink); stroke: var(--bg); stroke-width: 2; }

.fs-item { opacity: 0; transform: translateY(6px); transition: opacity 0.3s, transform 0.35s cubic-bezier(.3,1.4,.5,1); }
.fs-item.is-on { opacity: 1; transform: none; }
.fs-chip { fill: var(--raised); stroke: var(--grid); stroke-width: 1; transition: opacity 0.3s; }
.fs-item--personal .fs-chip { stroke: var(--s2); }
.fs-item.is-hot .fs-chip { stroke: var(--ink); stroke-width: 1.5; }
.fs-value { fill: var(--ink); font-size: 12.5px; font-weight: 500; transition: opacity 0.3s; }
.fs-drop { fill: var(--s2); font-size: 11px; font-weight: 600; opacity: 0; transition: opacity 0.3s; }
.fs-item.is-dropped .fs-drop { opacity: 1; }
.fs-item.is-dropped .fs-chip, .fs-item.is-dropped .fs-label, .fs-item.is-dropped .fs-value { opacity: 0.4; }
.fs-item.is-dropped .fs-value { text-decoration: line-through; }
.fs-salt { fill: var(--s4); stroke: var(--bg); stroke-width: 2; transition: fill 0.3s, stroke 0.3s; }
.fs-salt-g.is-gone .fs-salt { fill: var(--bg); stroke: var(--s4); stroke-width: 1.5; stroke-dasharray: 2 2; }
.fs-link { fill: none; stroke: var(--s1); stroke-width: 1.5; stroke-linecap: round; opacity: 0.55; transition: opacity 0.2s; }
.fs-link--personal { stroke: var(--s2); }
.fs-link--salt { stroke: var(--s4); }
.fs-link--salt.is-gone { opacity: 0.25; }
.fs-links.has-hot .fs-link:not(.is-hot) { opacity: 0.12; }
.fs-link.is-hot { stroke-width: 2.5; opacity: 1; }

.spine { opacity: 0; transform: translateY(-18px); transition: transform 0.45s cubic-bezier(.3,1.4,.5,1), opacity 0.25s; }
.spine.is-on { opacity: 1; transform: none; }
.spine rect { fill: var(--c); }
.spine.is-hot rect { stroke: var(--ink); stroke-width: 1.5; }
.spine-text { font-size: 10px; font-weight: 500; letter-spacing: 0.01em; pointer-events: none; }
.fav { fill: var(--ink); }
@media (prefers-color-scheme: dark) {
  /* the covers are dark; lift them off the dark page */
  .spine rect { fill: color-mix(in oklab, var(--c), white 22%); }
}

.bar { fill: var(--past); }
.bar--now { fill: var(--s1); }
.bar.is-hot { stroke: var(--ink); stroke-width: 1.5; }
.cursor { stroke: var(--ink); stroke-width: 1; }

/* tooltip */
.tip {
  position: fixed; z-index: 80; pointer-events: none;
  max-width: 18rem;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  background: var(--raised);
  box-shadow: 0 0 0 1px var(--ring), 0 8px 24px -8px rgb(0 0 0 / 0.25);
  font-size: 0.8125rem; line-height: 1.45; color: var(--ink-2);
}
.tip strong { display: block; color: var(--ink); font-size: 0.9375rem; font-weight: 600; }
.tip .key { display: inline-block; width: 12px; height: 2px; border-radius: 1px; vertical-align: middle; margin-right: 0.4rem; }

/* ---------- About ---------- */
.about { padding-bottom: clamp(4rem, 9vw, 7rem); }
.about__grid { display: grid; gap: 2.5rem 4rem; align-items: start; }
@media (min-width: 900px) { .about__grid { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); } }
/* near-ink plus a bg-coloured halo so the backdrop's dots and lines don't wash the copy out */
.about__text {
  font-size: clamp(1.075rem, 1.4vw, 1.175rem);
  color: color-mix(in srgb, var(--ink) 75%, var(--ink-2));
  max-width: 40rem;
  text-shadow: 0 0 2px var(--bg), 0 0 8px var(--bg), 0 0 16px var(--bg);
}
.about__text cite { font-style: italic; color: var(--ink); }

/* a small 2×2 grid, beside the text on desktop and under it on phones */
.photos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.6rem; width: 100%; max-width: 20rem; }
@media (min-width: 900px) { .photos { justify-self: end; margin-top: 0.4rem; } }
@media (max-width: 899px) { .photos { justify-self: center; } }

.photos figure { margin: 0; }
.photos img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  background: var(--grid);
}
.photo {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: none;
  overflow: hidden;
  cursor: zoom-in;
}
.photo img { transition: transform 0.3s ease, opacity 0.2s; }
.photo:hover img { transform: scale(1.03); }
.photo:focus-visible { outline-offset: 2px; }

/* tap-to-preview */
.lightbox {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  padding: clamp(1rem, 4vw, 2.5rem);
  border: 0;
  background: transparent;
  color: #f4f4f2;
}
.lightbox[open] { display: grid; place-items: center; animation: lightbox-in 0.2s ease-out; }
.lightbox::backdrop { background: rgb(12 12 11 / 0.88); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
@keyframes lightbox-in { from { opacity: 0; transform: scale(0.98); } }
.lightbox__figure { margin: 0; display: grid; justify-items: center; gap: 0.9rem; touch-action: pan-y; }
.lightbox__img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(100%, 1100px);
  max-height: calc(100dvh - 9rem);
  border-radius: 10px;
  user-select: none;
  -webkit-user-drag: none;
}
.lightbox__bar { display: flex; align-items: center; gap: 1.25rem; font-size: 0.9375rem; }
.lightbox__caption { min-width: 7rem; text-align: center; }
.lightbox__nav, .lightbox__close {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid rgb(255 255 255 / 0.2);
  border-radius: 999px;
  background: rgb(255 255 255 / 0.06);
  color: inherit;
  font: inherit;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.lightbox__nav:hover, .lightbox__close:hover { background: rgb(255 255 255 / 0.16); }
.lightbox__close { position: fixed; top: clamp(0.75rem, 3vw, 1.5rem); right: clamp(0.75rem, 3vw, 1.5rem); }
html:has(.lightbox[open]) { overflow: hidden; }

.photos figcaption { margin-top: 0.3rem; font-size: 0.75rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.viz--career { margin-top: clamp(2.5rem, 6vw, 4rem); }
[data-chart="career"] { height: 280px; }

/* ---------- CTA ---------- */
.cta { border-top: 1px solid var(--grid); padding-block: clamp(4rem, 9vw, 6.5rem); }
.cta__inner { display: grid; gap: 2rem; align-items: end; }
@media (min-width: 900px) {
  .cta__inner { grid-template-columns: 1.2fr 1fr; }
  .cta__actions { justify-content: flex-end; }
}
.cta h2 { font-size: clamp(2.2rem, 5vw, 3.75rem); letter-spacing: -0.045em; margin-bottom: 1rem; }
.cta__sub { color: var(--ink-2); margin: 0; max-width: 32rem; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- Footer ---------- */
.footer { padding-block: 2rem; font-size: 0.875rem; color: var(--muted); border-top: 1px solid var(--grid); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }
.footer ul { display: flex; gap: 1.5rem; }
.footer a { text-decoration: none; }
.footer a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- Small screens ---------- */
@media (max-width: 560px) {
  .nav__links li:not(:last-child) { display: none; }
  .hero__actions .btn, .cta__actions .btn { flex: 1 1 100%; justify-content: center; }
  [data-chart="orch"] { height: 240px; }
}

@media (prefers-reduced-motion: reduce) {
  .dot, .fs-item, .fs-chip, .fs-value, .fs-drop, .fs-salt, .spine, .photo img { transition: none; }
  .lightbox[open] { animation: none; }
}

/* chart text stays legible where it crosses marks */
.ax-text { paint-order: stroke; stroke: var(--bg); stroke-width: 3px; stroke-linejoin: round; }