/* joaoribeiromedeiros.github.io — shared stylesheet. No build step. */

:root {
  --bg: #14151a;
  --surface: #1e1f26;
  --surface-2: #262833;
  --border: #33354a;
  --text: #e6e6ea;
  --muted: #a4a5b2;
  --pink: #ff79c6;
  --green: #50fa7b;
  --cyan: #8fd0f0;
  --accent: var(--pink);
  --max: 72rem;
  --measure: 72ch;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0, 0, 0, .35);
  --font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

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

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .15em; }
a:hover { color: #ffa1d8; }

:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); color: var(--pink); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
p, li { max-width: var(--measure); }
ul, ol { padding-left: 1.25em; }
small, .muted { color: var(--muted); }
code { font-family: var(--mono); font-size: .92em; background: var(--surface-2); padding: .1em .35em; border-radius: 4px; }

.wrap { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }

/* Skip link */
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--green); color: #000; padding: .5rem .75rem; border-radius: 6px; z-index: 100; font-weight: 600; }
.skip:focus { top: 1rem; }

/* Header / nav */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 21, 26, .82);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.75rem; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: .01em; display: inline-flex; align-items: center; gap: .6rem; }
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.brand:hover { color: var(--pink); }
.nav { display: flex; gap: .25rem; margin: 0; padding: 0; list-style: none; }
.nav a { display: block; padding: .5rem .75rem; color: var(--muted); text-decoration: none; border-radius: 8px; font-weight: 500; }
.nav a:hover { color: var(--text); background: var(--surface); }
.nav a[aria-current="page"] { color: var(--text); background: var(--surface-2); }

/* Hero (home) */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  padding: clamp(3.5rem, 8vw, 7rem) 0;
  background-color: #1a1030;
  background-image: url("assets/bg.jpg");
  background-image: image-set(url("assets/bg.webp") type("image/webp"), url("assets/bg.jpg") type("image/jpeg"));
  background-size: cover; background-position: center 35%;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(20, 21, 26, .96) 0%, rgba(20, 21, 26, .86) 45%, rgba(20, 21, 26, .55) 100%),
    linear-gradient(180deg, rgba(20, 21, 26, .2), rgba(20, 21, 26, .95));
}
.hero .wrap { display: grid; gap: 1.5rem; grid-template-columns: 1fr; align-items: center; }
.hero.has-photo .wrap { grid-template-columns: minmax(0, 1fr) auto; }
.hero .eyebrow { color: var(--green); font-family: var(--mono); font-size: .9rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: .75rem; }
.hero h1 { margin-bottom: .35em; }
.hero .headline { font-size: clamp(1.1rem, 1rem + .6vw, 1.35rem); color: var(--cyan); margin-bottom: .5em; max-width: 52ch; }
.hero .meta { color: var(--muted); margin-bottom: 1.5rem; }
.hero .photo { width: clamp(140px, 22vw, 220px); aspect-ratio: 1; border-radius: 50%; object-fit: cover; border: 3px solid rgba(255, 255, 255, .15); box-shadow: var(--shadow); }
.cta { display: flex; flex-wrap: wrap; gap: .75rem; }
.btn {
  display: inline-block; padding: .65rem 1.1rem; border-radius: 999px; font-weight: 600; text-decoration: none;
  border: 1px solid var(--border); color: var(--text); background: rgba(30, 31, 38, .7);
}
.btn:hover { border-color: var(--pink); color: var(--text); }
.btn.primary { background: var(--pink); color: #1a0b14; border-color: var(--pink); }
.btn.primary:hover { background: #ffa1d8; }

/* Inner-page banner */
.page-hero {
  position: relative; isolation: isolate; overflow: hidden;
  padding: clamp(2.25rem, 5vw, 3.75rem) 0;
  border-bottom: 1px solid var(--border);
  background-color: #1a1030;
  background-image: url("assets/bg.jpg");
  background-image: image-set(url("assets/bg.webp") type("image/webp"), url("assets/bg.jpg") type("image/jpeg"));
  background-size: cover; background-position: center 60%;
}
.page-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, rgba(20, 21, 26, .97) 0%, rgba(20, 21, 26, .9) 55%, rgba(20, 21, 26, .7) 100%); }
.page-hero h1 { margin-bottom: .25em; }
.page-hero p { color: var(--muted); margin: 0; max-width: 60ch; }

/* Sections */
main { flex: 1; }
.section { padding: clamp(2.5rem, 5vw, 4rem) 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0; }
.section-head a { font-weight: 500; }
.lede { font-size: 1.15rem; color: var(--text); }

/* Cards */
.grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.35rem; display: flex; flex-direction: column; gap: .5rem;
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-2px); border-color: #4a4c66; }
.card h3 { margin: 0; }
.card h3 a { text-decoration: none; color: var(--text); }
.card h3 a:hover { color: var(--pink); }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card { position: relative; }
.card p { margin: 0; color: var(--muted); }
.card .kicker { color: var(--green); font-family: var(--mono); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.card .foot { margin-top: auto; padding-top: .5rem; display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; font-size: .9rem; color: var(--muted); }
.card.featured { grid-column: 1 / -1; background: linear-gradient(135deg, var(--surface), #241c33); }
.card.featured p { color: var(--text); max-width: var(--measure); }
.card p a { position: relative; z-index: 1; }
.card .links { position: relative; z-index: 1; display: flex; gap: .75rem; flex-wrap: wrap; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0; margin: 0; list-style: none; }
.chips li, .chip { font-size: .85rem; padding: .3rem .7rem; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text); }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: .45rem; top: .5rem; bottom: .5rem; width: 2px; background: var(--border); }
.timeline > li { position: relative; padding-left: 2.25rem; margin-bottom: 2.25rem; }
.timeline > li::before { content: ""; position: absolute; left: 0; top: .45rem; width: 1rem; height: 1rem; border-radius: 50%; background: var(--bg); border: 3px solid var(--pink); }
.timeline > li.current::before { border-color: var(--green); }
.role { display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem .75rem; }
.role h3 { margin: 0; }
.role .org { color: var(--cyan); font-weight: 600; }
.when { display: block; color: var(--muted); font-family: var(--mono); font-size: .85rem; margin: .15rem 0 .6rem; }
.timeline ul { margin: .5rem 0 0; }
.timeline li li { margin-bottom: .35rem; }
.timeline .sub { margin-top: 1.25rem; padding-left: 1rem; border-left: 2px solid var(--border); }
.timeline .sub h3 { font-size: 1.05rem; }

/* Publications */
.pubs { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.pubs li { max-width: none; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; }
.pubs .title { font-weight: 600; display: block; margin-bottom: .2rem; }
.pubs .venue { color: var(--muted); display: block; font-size: .95rem; }
.pubs .doi { font-family: var(--mono); font-size: .85rem; }

/* Education */
.edu { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; color: var(--muted); font-size: .95rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: center; }
.site-footer ul { display: flex; flex-wrap: wrap; gap: .25rem 1rem; list-style: none; margin: 0; padding: 0; }
.site-footer a { color: var(--text); text-decoration: none; }
.site-footer a:hover { color: var(--pink); }

/* 404 */
.notfound { text-align: center; padding: clamp(4rem, 12vw, 8rem) 0; }
.notfound h1 { font-size: clamp(4rem, 15vw, 8rem); color: var(--pink); margin: 0; }

@media (max-width: 40rem) {
  .site-header .wrap { justify-content: center; }
  .nav { width: 100%; justify-content: center; flex-wrap: wrap; padding-bottom: .5rem; }
  .nav a { padding: .4rem .6rem; }
  .hero.has-photo .wrap { grid-template-columns: 1fr; }
  .hero .photo { order: -1; }
  .card.featured { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .card:hover { transition: none; transform: none; }
}

@media print {
  .site-header, .site-footer, .cta, .skip { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; }
  .hero, .page-hero { background: none; }
}

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }

/* Logos in timeline and highlight cards */
.logo { width: 44px; height: 44px; object-fit: contain; border-radius: 8px; background: #fff; padding: 4px; flex: none; }
.role { align-items: center; }
.hl { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr)); }
.hl .card { flex-direction: row; align-items: flex-start; gap: 1rem; }
.hl .card img { width: 56px; height: 56px; object-fit: contain; background: #fff; border-radius: 8px; padding: 6px; flex: none; }
.hl .card h3 { font-size: 1.05rem; margin-bottom: .15rem; }
.hl .card .who { color: var(--cyan); font-size: .9rem; display: block; margin-bottom: .35rem; }
.hl .card p { font-size: .95rem; }

/* CV page */
.cv-head { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.cv-head img { width: 128px; height: 128px; border-radius: 50%; object-fit: cover; border: 3px solid rgba(255, 255, 255, .15); }
.cv-head h1 { margin-bottom: .2em; }
.cv-head .contact { display: flex; flex-wrap: wrap; gap: .3rem 1rem; color: var(--muted); margin: .5rem 0 0; }
.cv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 3rem; }
.cv-grid .full { grid-column: 1 / -1; }
.cv-list { list-style: none; padding: 0; margin: 0; }
.cv-list li { display: grid; grid-template-columns: 6rem 1fr; gap: .75rem; padding: .6rem 0; border-bottom: 1px solid var(--border); max-width: none; }
.cv-list .yr { font-family: var(--mono); color: var(--muted); font-size: .85rem; padding-top: .2rem; }
.cv-list b { display: block; }
.cv-list .who { color: var(--cyan); }
.cv-list p { margin: .2rem 0 0; color: var(--muted); font-size: .95rem; }
.cv-list .with { display: flex; gap: .6rem; align-items: flex-start; }
.cv-list .with img { width: 32px; height: 32px; object-fit: contain; background: #fff; border-radius: 6px; padding: 3px; flex: none; margin-top: .15rem; }
.bars { list-style: none; padding: 0; margin: 0; }
.bars li { display: grid; grid-template-columns: 9rem 1fr; gap: .75rem; align-items: center; margin-bottom: .45rem; max-width: none; }
.bars .bar { height: .5rem; background: var(--surface-2); border-radius: 999px; overflow: hidden; }
.bars .bar span { display: block; height: 100%; background: var(--pink); border-radius: 999px; }
.cv-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1rem; }

@media (max-width: 40rem) {
  .cv-grid { grid-template-columns: 1fr; }
  .cv-list li { grid-template-columns: 4.5rem 1fr; }
}

@media print {
  body { font-size: 10.5pt; }
  .cv-actions, .page-hero { display: none; }
  .cv-head img { width: 80px; height: 80px; }
  .cv-grid { gap: 1rem 2rem; }
  .section { padding: 1rem 0; }
  .cv-list li, .bars li { break-inside: avoid; }
  .cv-list .who, .cv-list p, .cv-list .yr, .cv-head .contact { color: #333; }
  .bars .bar { background: #ddd; } .bars .bar span { background: #555; }
  h2 { color: #000; }
  .cv-list .with img, .logo { background: none; padding: 0; }
  @page { margin: 1.5cm; }
}