/* ---------------------------------------------------------------
   Eduardo Lacerda — personal site
   Palette drawn from a land-cover map: paper, ink, forest, water.
   --------------------------------------------------------------- */

:root {
  --paper: #f2f4f0;
  --paper-2: #e7ebe5;
  --ink: #15231d;
  --ink-2: #3d4e46;
  --muted: #64746c;
  --line: #cfd7d0;
  --water: #1d6a8a;
  --water-dark: #13506a;
  --forest: #2c6a48;
  --break: #b0325a;

  --sans: "Schibsted Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;

  /* modular scale, ratio 1.25 from 17px */
  --s-1: 0.85rem;
  --s0: 1.0625rem;
  --s1: 1.33rem;
  --s2: 1.66rem;
  --s3: 2.07rem;
  --s4: 2.6rem;

  --wrap: 72rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--s0);
  line-height: 1.55;
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--water); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--water-dark); text-decoration-thickness: 2px; }

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

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.8rem;
  z-index: 10;
}
.skip:focus { left: 0.5rem; }

/* ---------- header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}
.site-head .mark {
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-head nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-head nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-head nav a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- hero ---------- */

.hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.hero h1 {
  font-size: clamp(3rem, 7.2vw, 5.6rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  font-weight: 800;
  margin: 0 0 1.6rem;
}
.hero h1 span { display: block; }

.who {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin: 0 0 1.5rem;
}
.who img {
  width: 4.25rem;
  height: 4.25rem;
  border-radius: 50%;
  object-fit: cover;
  flex: none;
}
.who p {
  margin: 0;
  font-size: var(--s0);
  line-height: 1.4;
  color: var(--ink-2);
}
.who strong { color: var(--ink); font-weight: 600; }

.lede {
  font-family: var(--serif);
  font-size: var(--s1);
  line-height: 1.5;
  max-width: 34em;
  margin: 0 0 1.75rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.links a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  background: #fff;
}
.links a:hover { border-color: var(--ink); }
.links a.primary { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.links a.primary:hover { background: var(--forest); border-color: var(--forest); }

/* the landscape */

.scene { margin: 0; }
.scene-frame {
  position: relative;
  aspect-ratio: 6 / 4.6;
  background: var(--paper-2);
  border-radius: 6px;
  overflow: hidden;
  touch-action: manipulation;
}
.scene canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.probe {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  width: min(17.5rem, calc(100% - 1.5rem));
  padding: 0.7rem 0.8rem 0.6rem;
  background: rgba(242, 244, 240, 0.94);
  border-radius: 4px;
  box-shadow: 0 1px 0 rgba(21, 35, 29, 0.08), 0 6px 20px rgba(21, 35, 29, 0.18);
  font-size: 0.8rem;
  line-height: 1.35;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.probe.on { opacity: 1; transform: none; }
.probe-head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--ink-2);
  margin-bottom: 0.3rem;
}
.probe-head b { color: var(--ink); font-weight: 600; }
.probe svg { display: block; width: 100%; height: 64px; overflow: visible; }
.probe-note { margin: 0.35rem 0 0; color: var(--ink-2); }

.timebar {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 0.9rem;
  margin-top: 0.9rem;
}
.year {
  font-size: var(--s3);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 4ch;
}
.play {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  display: grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
}
.play:hover { border-color: var(--ink); }
.play svg { width: 0.85rem; height: 0.85rem; }

input[type="range"] {
  width: 100%;
  accent-color: var(--forest);
  margin: 0;
}

.scene figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem 1.5rem;
  margin-top: 0.75rem;
  font-size: var(--s-1);
  color: var(--muted);
}
.scene figcaption p { margin: 0; max-width: 32rem; }
.legend {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}
.legend .ramp {
  width: 5.5rem;
  height: 0.55rem;
  border-radius: 2px;
}
.legend .sw {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 1px;
  margin-left: 0.5rem;
}

/* ---------- sections ---------- */

section.block {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--line);
}
.block-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 1rem clamp(2rem, 5vw, 4.5rem);
  margin-bottom: clamp(2rem, 4vw, 3rem);
  align-items: end;
}
.block-head h2 {
  font-size: var(--s4);
  line-height: 1;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin: 0;
}
.block-head p {
  margin: 0;
  max-width: 38em;
  color: var(--ink-2);
}

/* ---------- about ---------- */

.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem clamp(2rem, 5vw, 4.5rem);
}
.about .prose {
  grid-column: 2;
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.65;
  max-width: 36em;
}
.about .prose p { margin: 0 0 1em; }
.about .prose p:last-child { margin-bottom: 0; }
.about aside {
  grid-column: 1;
  grid-row: 1;
}
.about aside h3,
.timeline-wrap h3 {
  font-size: var(--s0);
  font-weight: 600;
  margin: 0 0 0.75rem;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}
.tags li {
  font-size: 0.85rem;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  background: var(--paper-2);
  color: var(--ink-2);
}

.timeline-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem clamp(2rem, 5vw, 4.5rem);
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
.timeline-wrap > div { grid-column: 2; }
.timeline-wrap > h3 { grid-column: 1; }

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--line);
}
.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 0.25rem 1.25rem;
  padding: 0 0 1.4rem 1.4rem;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--muted);
}
.timeline li.now::before { background: var(--forest); border-color: var(--forest); }
.timeline .when {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.95rem;
}
.timeline .what b { font-weight: 600; display: block; }
.timeline .what span { color: var(--ink-2); font-size: 0.95rem; }
.timeline .what p { margin: 0.3rem 0 0; color: var(--ink-2); font-size: 0.95rem; max-width: 40em; }

.edu {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
  padding-left: calc(1.4rem + 2px);
}
.edu li { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1.25rem; }
.edu .when { color: var(--muted); font-variant-numeric: tabular-nums; }

/* ---------- software ---------- */

.chain {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 7.5rem minmax(0, 1fr);
  align-items: stretch;
  margin-bottom: 1.5rem;
}
.chain-label {
  font-size: var(--s1);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.9rem;
  grid-column: 1 / -1;
}
.link-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
  line-height: 1.25;
  padding: 0 0.5rem;
}
.link-arrow svg { width: 100%; height: 14px; color: var(--ink-2); }

.tool {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.25rem 1.3rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-width: 0;
}
.tool-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.tool-top img { width: 2.25rem; height: 2.25rem; flex: none; }
.tool h3 {
  margin: 0;
  font-size: var(--s1);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.tool h3 a { color: var(--ink); text-decoration: none; }
.tool h3 a:hover { text-decoration: underline; }
.tool .kind { margin: 0.1rem 0 0; color: var(--muted); font-size: 0.85rem; }
.tool > p { margin: 0; color: var(--ink-2); font-size: 0.97rem; }
.tool .shot {
  border-radius: 4px;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
  object-position: top left;
  width: 100%;
}
.tool ul.facts {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  color: var(--ink-2);
}
.tool ul.facts li { margin: 0.15rem 0; }
.tool .foot {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  font-size: 0.92rem;
  padding-top: 0.25rem;
}
.install {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.2rem 0.3rem 0.2rem 0.55rem;
}
.install button {
  font: inherit;
  font-family: var(--sans);
  font-size: 0.78rem;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  padding: 0.15rem 0.45rem;
  cursor: pointer;
}
.install button:hover { background: var(--forest); }

.community {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 1.5rem;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
.community .chain-label { margin-bottom: 0; }
.big-repo {
  border-top: 2px solid var(--ink);
  padding-top: 1rem;
}
.big-repo h3 { margin: 0 0 0.35rem; font-size: var(--s2); letter-spacing: -0.03em; line-height: 1.1; }
.big-repo h3 a { color: var(--ink); text-decoration: none; }
.big-repo h3 a:hover { text-decoration: underline; }
.big-repo p { margin: 0 0 0.8rem; color: var(--ink-2); max-width: 36em; }
.stats {
  display: flex;
  gap: 1.75rem;
  margin: 0.25rem 0 0;
}
.stats div { display: flex; flex-direction: column; }
.stats dt { order: 2; color: var(--muted); font-size: 0.85rem; }
.stats dd {
  order: 1;
  margin: 0;
  font-size: var(--s3);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.big-repo.small h3 { font-size: var(--s1); }
.big-repo.small .stats dd { font-size: var(--s2); }

.more-code { margin: 2.5rem 0 0; color: var(--ink-2); }

/* ---------- publications ---------- */

.pubs {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pubs > li {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.25rem 1.5rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}
.pubs > li:last-child { border-bottom: 1px solid var(--line); }
.pubs .yr {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  padding-top: 0.15rem;
}
.pubs .t {
  font-family: var(--serif);
  font-size: 1.22rem;
  line-height: 1.3;
  margin: 0 0 0.3rem;
  font-weight: 500;
}
.pubs .t a { color: var(--ink); text-decoration: none; }
.pubs .t a:hover { color: var(--water); text-decoration: underline; }
.pubs .au { margin: 0; color: var(--ink-2); font-size: 0.93rem; }
.pubs .au b { color: var(--ink); font-weight: 600; }
.pubs .src { margin: 0.15rem 0 0; font-size: 0.93rem; }
.pubs .src em { font-style: italic; color: var(--ink); }
.pubs .src span { color: var(--muted); }

.pubs-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  color: var(--ink-2);
}

/* ---------- teaching ---------- */

.courses {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem clamp(1.5rem, 4vw, 3rem);
}
.course {
  border-top: 2px solid var(--forest);
  padding-top: 1rem;
}
.course h3 { margin: 0 0 0.25rem; font-size: var(--s2); letter-spacing: -0.03em; line-height: 1.1; }
.course .where { margin: 0 0 0.75rem; color: var(--muted); font-size: 0.92rem; }
.course p { margin: 0; color: var(--ink-2); max-width: 32em; }

/* ---------- contact ---------- */

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem clamp(2rem, 5vw, 4.5rem);
}
.contact .mail {
  font-size: clamp(1.4rem, 3.4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration-thickness: 2px;
  word-break: break-word;
}
.contact .mail:hover { color: var(--water); }
.profiles {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 0.5rem 1.5rem;
}
.profiles a { text-decoration: none; display: flex; flex-direction: column; padding: 0.4rem 0; border-bottom: 1px solid var(--line); color: var(--ink); }
.profiles a span { color: var(--muted); font-size: 0.85rem; }
.profiles a:hover { border-bottom-color: var(--ink); }

.site-foot {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.5rem;
  color: var(--muted);
  font-size: var(--s-1);
}
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; }
.site-foot p { margin: 0; }

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr; }
  .link-arrow { flex-direction: row; padding: 0.6rem 0; }
  .link-arrow svg { width: 2.25rem; height: 14px; transform: rotate(90deg); flex: none; }
  .community { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-head nav { display: none; }
  .block-head,
  .about,
  .timeline-wrap,
  .contact { grid-template-columns: 1fr; }
  .about .prose,
  .about aside,
  .timeline-wrap > div,
  .timeline-wrap > h3 { grid-column: 1; grid-row: auto; }
  .courses { grid-template-columns: 1fr; }
  .timeline li,
  .edu li { grid-template-columns: 1fr; gap: 0.1rem; }
  .pubs > li { grid-template-columns: 1fr; gap: 0.1rem; }
}

.contact-head h2 {
  font-size: var(--s4);
  line-height: 1;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin: 0;
}
.contact .addr { margin: 0.6rem 0 0; color: var(--ink-2); max-width: 40em; }

.code {
  margin: 0.2rem 0 0;
  padding: 0.85rem 1rem;
  background: #17251f;
  color: #dfe7e1;
  border-radius: 4px;
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  overflow-x: auto;
  tab-size: 4;
}
.code .k { color: #9fc7e0; }
.code .s { color: #c8d99a; }
.code .n { color: #e6c38f; }
.code .c { color: #7f9489; font-style: italic; }