/* Copyright (C) 2026 Cristian Cezar Moisés
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

:root {
  color-scheme: dark;
  --background: #000;
  --text: #e4efeb;
  --muted: #a4b9b1;
  --quiet: #819b92;
  --teal: #63e6c2;
  --teal-soft: #b9f5e2;
  --line: #21443a;
  --line-strong: #3b7865;
  --focus: #9cf9dc;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--background); scroll-behavior: smooth; }
body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  margin: 0;
  background: var(--background);
  color: var(--text);
}
img, video { display: block; max-width: 100%; }
a { color: var(--teal); text-decoration-color: currentColor; text-underline-offset: .2em; }
a:hover { color: var(--teal-soft); }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; border-radius: 2px; }
::selection { background: var(--teal); color: #00130c; }
.shell { width: min(100% - 3rem, 1060px); margin-inline: auto; }
.skip-link {
  position: absolute;
  z-index: 10;
  top: .75rem;
  left: .75rem;
  transform: translateY(-180%);
  padding: .5rem .75rem;
  background: var(--teal);
  color: #00130c;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header { border-bottom: 1px solid var(--line); }
.header-inner {
  display: flex;
  min-height: 5.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: var(--text);
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .01em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark:hover { color: var(--teal-soft); }
.wordmark-mark {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--teal);
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .875rem;
  font-weight: 700;
}
.site-header nav { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1.25rem; }
.site-header nav a {
  padding-block: .5rem;
  color: var(--muted);
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
}
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: var(--teal); }
.site-header nav .language-link {
  padding-inline: .55rem;
  border: 1px solid var(--line-strong);
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .75rem;
}
.site-header nav .language-link:hover { border-color: var(--teal); }
.site-header nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: .5rem;
}
.main-content { flex: 1; padding-block: 4rem 6rem; }
h1, h2, h3 { line-height: 1.16; letter-spacing: -.035em; }
h1, h2, h3, p { margin-block-start: 0; }
h1 { font-size: clamp(2.4rem, 5.2vw, 4rem); font-weight: 760; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }
.eyebrow, .item-meta {
  color: var(--teal);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .11em;
  line-height: 1.5;
  text-transform: uppercase;
}
.eyebrow { margin-bottom: 1.25rem; }

.hero { max-width: 830px; padding-block: 1.5rem 5rem; }
.hero h1 { margin-bottom: 1.5rem; }
.hero-lead {
  max-width: 44rem;
  margin-bottom: 1rem;
  color: var(--teal-soft);
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 560;
  line-height: 1.45;
}
.hero-copy, .intro-copy, .post-deck {
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-top: 2rem; }
.button-link {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .65rem 1rem;
  border: 1px solid var(--teal);
  background: var(--teal);
  color: #00170e;
  font-size: .875rem;
  font-weight: 750;
  text-decoration: none;
}
.button-link:hover { border-color: var(--teal-soft); background: var(--teal-soft); color: #00170e; }
.quiet-link, .text-link { color: var(--teal); font-size: .875rem; font-weight: 650; text-decoration: none; }
.quiet-link:hover, .text-link:hover { text-decoration: underline; }
.home-section { padding-block: 2.5rem; border-top: 1px solid var(--line); }
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.section-heading .eyebrow { margin-bottom: .5rem; }
.section-heading h2 { margin-bottom: 0; }
.section-heading .text-link { flex-shrink: 0; margin-bottom: .25rem; }

.project-list { border-top: 1px solid var(--line); }
.project-card {
  display: grid;
  grid-template-columns: minmax(0, 13rem) minmax(0, 1fr);
  gap: 1.5rem 2rem;
  padding-block: 1.75rem;
  border-bottom: 1px solid var(--line);
}
.project-visual {
  display: grid;
  min-height: 9rem;
  align-self: start;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  color: var(--teal);
  text-decoration: none;
}
.project-visual:hover { border-color: var(--line-strong); }
.project-visual img { width: 100%; height: 9rem; object-fit: contain; }
.project-placeholder {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.08em;
}
.project-detail .item-meta { margin-bottom: .6rem; }
.project-detail h2, .project-detail h3 { margin-bottom: .6rem; font-size: 1.25rem; }
.project-detail h2 a, .project-detail h3 a, .publication-item h2 a { color: var(--text); text-decoration: none; }
.project-detail h2 a:hover, .project-detail h3 a:hover, .publication-item h2 a:hover { color: var(--teal); text-decoration: underline; }
.project-detail > p:not(.item-meta) { max-width: 42rem; margin-bottom: .75rem; color: var(--muted); }
.latest-list, .publication-list, .footer-links { margin: 0; padding: 0; list-style: none; }
.latest-list { border-top: 1px solid var(--line); }
.latest-list li {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: .9rem;
  border-bottom: 1px solid var(--line);
}
.latest-list time, .publication-date {
  color: var(--quiet);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .8rem;
}
.latest-list a { color: var(--text); font-weight: 600; text-decoration: none; }
.latest-list a:hover { color: var(--teal); text-decoration: underline; }

.page-intro { max-width: 48rem; margin-bottom: 3rem; }
.page-intro h1 { margin-bottom: 1rem; }
.page-intro .intro-copy { margin-bottom: 0; }
.publication-list { border-top: 1px solid var(--line); }
.publication-item {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.publication-item .item-meta { margin-bottom: .5rem; }
.publication-item h2 { margin-bottom: .5rem; font-size: 1.3rem; }
.publication-item p:last-child { max-width: 42rem; margin-bottom: 0; color: var(--muted); }
.empty-note { padding-block: 1.5rem; color: var(--muted); }
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17rem;
  align-items: start;
  gap: 3rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}
.about-copy h2 { margin-top: 0; }
.about-aside { padding: 1.5rem; border: 1px solid var(--line); color: var(--muted); font-size: .875rem; }
.portrait {
  width: 7rem;
  height: 7rem;
  margin-bottom: 1.25rem;
  border: 2px solid var(--teal);
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
}
.about-name { margin-bottom: .25rem; color: var(--text); font-weight: 700; }
.about-aside .text-link { display: inline-block; margin-top: .5rem; }

.post { max-width: 800px; }
.post-header { max-width: 48rem; margin-bottom: 2.5rem; }
.back-link { display: inline-block; margin-bottom: 2rem; color: var(--muted); font-size: .875rem; text-decoration: none; }
.back-link:hover { color: var(--teal); }
.post-header .item-meta { margin-bottom: .75rem; }
.post-header h1 { margin-bottom: 1rem; }
.post-deck { margin-bottom: 0; }
.post-header .button-link { margin-top: 1.5rem; }
.prose { max-width: 46rem; color: var(--text); font-size: 1rem; line-height: 1.8; overflow-wrap: anywhere; }
.prose h2, .prose h3, .prose h4 { margin-top: 2.5rem; margin-bottom: .75rem; color: var(--text); }
.prose h2 { font-size: 1.6rem; }
.prose h3 { font-size: 1.2rem; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose pre { margin-bottom: 1.25rem; }
.prose img { width: auto; height: auto; max-width: 100%; margin-block: 1.5rem; border: 1px solid var(--line); }
.prose li + li { margin-top: .35rem; }
.prose blockquote { margin-inline: 0; padding: .25rem 1.25rem; border-left: 2px solid var(--teal); color: var(--muted); }
.prose code, .prose pre { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .9em; }
.prose code { color: var(--teal-soft); }
.prose pre { max-width: 100%; overflow-x: auto; padding: 1rem; border: 1px solid var(--line); line-height: 1.55; }
.prose pre code { color: var(--text); }
.post-end { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.not-found { max-width: 42rem; padding-block: 3rem 6rem; }
.not-found p:not(.eyebrow) { color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 2rem 4rem;
  padding-block: 2.5rem 3rem;
  color: var(--muted);
  font-size: .875rem;
}
.footer-heading { margin-bottom: .5rem; color: var(--text); font-weight: 700; }
.copyright { margin-top: 1.5rem; margin-bottom: 0; color: var(--text); }
.footer-links li + li { margin-top: .3rem; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.footer-license {
  grid-column: 1 / -1;
  margin-bottom: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: .78rem;
}

@media (max-width: 800px) {
  .header-inner { align-items: start; flex-direction: column; justify-content: center; padding-block: 1rem; }
  .site-header nav { gap: .25rem 1rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-aside { max-width: 24rem; }
}
@media (max-width: 600px) {
  .shell { width: min(100% - 2rem, 1060px); }
  .main-content { padding-block: 2.5rem 4rem; }
  .hero { padding-block: .5rem 3.5rem; }
  .section-heading { align-items: start; flex-direction: column; }
  .project-card, .publication-item { grid-template-columns: 1fr; gap: .8rem; }
  .project-visual { width: min(100%, 24rem); }
  .latest-list li { grid-template-columns: 1fr; gap: .2rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .about-aside {
    order: -1;
    display: grid;
    max-width: none;
    grid-template-columns: 7rem minmax(0, 1fr);
    align-items: center;
    gap: 0 1rem;
  }
  .about-aside .portrait { grid-row: 1 / 4; margin-bottom: 0; }
  .about-aside p { margin-bottom: .25rem; }
}
@media (max-width: 360px) {
  .site-header nav {
    display: grid;
    grid-template-columns: repeat(3, max-content);
    column-gap: 1rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}