/* ------------------------------------------------------------------
   João Gabriel de Souza Pinto — portfolio
   ------------------------------------------------------------------ */

:root {
  --ink: #0e0c12;
  --surface: #17141d;
  --line: #2a2533;
  --text: #eeeaf3;
  --muted: #9b94a8;
  --accent: #ff0077;
  --accent-soft: #ff4d9a;

  --font: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.5rem;
  --step-3: 2rem;
  --step-4: clamp(2.75rem, 7vw, 5.5rem);

  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --nav-h: 4rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 1.5rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--step-0);
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--text);
}

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

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--ink);
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
}

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

/* ---------- nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(14 12 18 / 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1rem;
}

.brand {
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--text);
  text-decoration: none;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: var(--step--1);
}

.nav-links a:hover,
.nav-links a[aria-current="true"] {
  color: var(--text);
}

.nav-links .nav-cv {
  color: var(--ink);
  background: var(--accent);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
}

.nav-links .nav-cv:hover {
  color: var(--ink);
  background: var(--accent-soft);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font: inherit;
  font-size: var(--step--1);
  cursor: pointer;
}

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

.hero {
  padding: clamp(4rem, 12vh, 8rem) 0 clamp(4rem, 10vh, 7rem);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgb(255 0 119 / 0.12), transparent 70%),
    var(--ink);
}

.hero-role {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: var(--step-1);
}

.hero-role a {
  color: var(--text);
  text-decoration: none;
}

.hero h1 {
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
  max-width: 14ch;
}

.stream {
  margin: 2.25rem 0 2.5rem;
  max-width: 44rem;
  font-family: var(--mono);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.7;
  color: var(--text);
}

.stream-prompt {
  color: var(--accent);
  user-select: none;
}

.stream .tok {
  opacity: 0;
}

.stream .tok.on {
  opacity: 1;
  transition: opacity 120ms linear;
}

.caret {
  display: inline-block;
  width: 0.6em;
  height: 1.15em;
  margin-left: 0.1em;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-size: var(--step--1);
  font-weight: 500;
  background: var(--surface);
}

.btn:hover {
  color: var(--text);
  border-color: var(--muted);
}

.btn svg {
  width: 1.05em;
  height: 1.05em;
  fill: currentColor;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
  color: var(--ink);
}

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

.section {
  padding: clamp(3.5rem, 9vw, 6rem) 0;
  border-bottom: 1px solid var(--line);
}

.section > .wrap {
  display: grid;
  grid-template-columns: 13rem minmax(0, 1fr);
  gap: 2rem 3rem;
}

.section-title {
  font-size: var(--step-2);
  align-self: start;
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
}

.section-title small {
  display: block;
  margin-top: 0.5rem;
  font-size: var(--step--1);
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  line-height: 1.5;
}

.lead {
  font-size: var(--step-1);
  line-height: 1.55;
  max-width: 40rem;
}

.muted {
  color: var(--muted);
}

.prose {
  max-width: 40rem;
}

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

.about {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.about img {
  width: 11rem;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 12px;
  filter: grayscale(0.15);
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1rem 2rem;
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-size: var(--step--1);
}

.facts dd {
  margin: 0.15rem 0 0;
}

/* ---------- what I build ---------- */

.build {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.build article {
  padding: 1.75rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.build h3 {
  font-size: var(--step-1);
  margin-bottom: 0.6rem;
}

.build p {
  color: var(--muted);
  margin-bottom: 1rem;
}

/* ---------- tags ---------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.tags li {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  background: var(--surface);
}

/* ---------- skills ---------- */

.skills {
  display: grid;
  gap: 1.5rem;
}

.skills > div {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
}

.skills h3 {
  font-size: var(--step-0);
  font-weight: 500;
  color: var(--muted);
}

/* ---------- experience ---------- */

.timeline {
  list-style: none;
  border-left: 1px solid var(--line);
}

.job {
  position: relative;
  padding: 0 0 3rem 2rem;
}

.job:last-child {
  padding-bottom: 0;
}

.job::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.55rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--muted);
}

.job.current::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgb(255 0 119 / 0.2);
}

.job-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  margin-bottom: 0.9rem;
}

.job h3 {
  font-size: var(--step-2);
}

.job-company {
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.job-company a {
  color: var(--text);
  text-decoration: none;
}

.job-company a:hover {
  color: var(--accent-soft);
}

.job-when {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
  padding-top: 0.45rem;
}

.job > p {
  max-width: 42rem;
}

.job ul.points {
  max-width: 42rem;
  margin: 0 0 1.25rem;
  padding-left: 1.1rem;
  list-style: disc;
}

.job ul.points li {
  margin-bottom: 0.5rem;
}

.job ul.points li::marker {
  color: var(--accent);
}

.job ul.points strong {
  font-weight: 600;
}

details.refs {
  margin-top: 1rem;
  font-size: var(--step--1);
}

details.refs summary {
  cursor: pointer;
  color: var(--muted);
  width: fit-content;
}

details.refs summary:hover {
  color: var(--text);
}

details.refs ul {
  list-style: none;
  margin-top: 0.6rem;
  display: grid;
  gap: 0.35rem;
}

/* ---------- publications & achievements ---------- */

.paper {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  max-width: 48rem;
}

.paper-venue {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent-soft);
  margin-bottom: 0.75rem;
}

.paper h3 {
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.paper .authors {
  color: var(--muted);
}

.paper .actions {
  margin-top: 1.5rem;
}

.awards {
  list-style: none;
  display: grid;
}

.awards li {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.awards li:first-child {
  border-top: 0;
  padding-top: 0;
}

.awards .year {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  padding-top: 0.2rem;
}

.awards h3 {
  font-size: var(--step-1);
  margin-bottom: 0.35rem;
}

.awards p {
  color: var(--muted);
  margin: 0;
  max-width: 40rem;
}

/* ---------- education ---------- */

.degrees {
  list-style: none;
  display: grid;
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.degrees h3 {
  font-size: var(--step-1);
}

.degrees p {
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.subhead {
  font-size: var(--step-0);
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 1rem;
}

.courses {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 0.75rem;
}

.courses li {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.courses h4 {
  font-size: var(--step-0);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.courses p {
  margin: 0;
  font-size: var(--step--1);
  color: var(--muted);
}

/* ---------- projects ---------- */

.projects {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.project {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface);
}

.project img {
  aspect-ratio: 936 / 646;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.25rem;
}

.project h3 {
  font-size: var(--step-1);
  margin-bottom: 0.5rem;
}

.project p {
  color: var(--muted);
  font-size: 0.95rem;
}

.project .tags {
  margin-bottom: 1.25rem;
}

.project a.more {
  margin-top: auto;
  font-weight: 500;
}

/* ---------- quote ---------- */

.quote {
  padding: clamp(4rem, 10vw, 7rem) 0;
  border-bottom: 1px solid var(--line);
}

.quote blockquote {
  margin: 0 auto;
  max-width: 46rem;
  text-align: center;
}

.quote p {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  font-weight: 500;
}

.quote footer {
  color: var(--muted);
  font-size: var(--step--1);
}

/* ---------- contact & footer ---------- */

.contact-pitch {
  font-size: var(--step-3);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 20ch;
  margin-bottom: 1rem;
}

.contact .actions {
  margin-top: 2rem;
}

.site-footer {
  padding: 2rem 0;
  color: var(--muted);
  font-size: var(--step--1);
}

.site-footer p {
  margin: 0;
}

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

@media (max-width: 860px) {
  .section > .wrap {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-title {
    position: static;
  }

  .build {
    grid-template-columns: minmax(0, 1fr);
  }

  .skills > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.5rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem var(--gutter) 1.25rem;
    background: var(--ink);
    border-bottom: 1px solid var(--line);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.7rem 0;
    font-size: var(--step-0);
  }

  .nav-links .nav-cv {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
  }
}

@media (max-width: 560px) {
  .about {
    grid-template-columns: minmax(0, 1fr);
  }

  .about img {
    width: 8rem;
  }

  .awards li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.25rem;
  }

  .job {
    padding-left: 1.25rem;
  }

  .paper {
    padding: 1.4rem;
  }
}

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

  .caret {
    animation: none;
  }

  .stream .tok {
    opacity: 1;
  }
}

/* Titles that link out read as titles, not as inline links. */
.courses h4 a,
.degrees a {
  color: var(--text);
  text-decoration-color: var(--line);
}

.courses h4 a:hover,
.degrees a:hover {
  color: var(--accent-soft);
  text-decoration-color: currentColor;
}