/* ============================================================
   atzingen.dev — refined dark utility (extends fii-scanner brand)
   ============================================================ */

:root {
  --bg:           #0d0f12;
  --bg-elev:      #15181d;
  --bg-elev-2:    #1c2026;
  --border:       #262a31;
  --border-strong:#363b44;

  --text:         #e8e9ea;
  --text-muted:   #9ca1a8;
  --text-dim:     #6b7079;

  --accent:       #d4a14a;
  --accent-soft:  rgba(212, 161, 74, 0.12);
  --accent-line:  rgba(212, 161, 74, 0.32);

  --good:         #4ade80;
  --bad:          #ef4444;
  --info:         #7aa2f7;

  --serif:        "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans:         "Geist", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --mono:         "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  --max-w: 1200px;
  --pad-x: clamp(20px, 4vw, 48px);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.005em;
}

body {
  background-image:
    radial-gradient(1100px 600px at 80% -10%, rgba(212, 161, 74, 0.05), transparent 60%),
    radial-gradient(800px 600px at -10% 120%, rgba(122, 162, 247, 0.04), transparent 60%);
  min-height: 100vh;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover { color: var(--accent); }
a.subtle { color: var(--text-muted); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin: 0;
}
h1 { font-size: clamp(48px, 7vw, 92px); line-height: 1; }
h1 em { font-style: italic; color: var(--accent); }
h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.15; }
h3 { font-size: 20px; line-height: 1.3; }

.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}

p { margin: 0 0 1em; color: var(--text-muted); }
p strong { color: var(--text); font-weight: 500; }

button, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

.shell {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

section {
  padding: clamp(80px, 10vw, 140px) 0;
  border-top: 1px solid var(--border);
}
section:first-of-type { border-top: 0; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(28px, 4vw, 56px);
}
.section-head .eyebrow { color: var(--accent); }

/* utility: subtle horizontal divider used inside cards */
.hr {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

/* ============================================================
   Topbar
   ============================================================ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 15, 18, 0.78);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}
.brand {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.brand em {
  font-style: italic;
  color: var(--accent);
  margin-right: 1px;
}
.brand span { color: var(--text-muted); font-family: var(--mono); font-size: 13px; }

.nav {
  margin-left: auto;
  display: flex;
  gap: 22px;
}
.nav a {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 120ms ease;
}
.nav a:hover { color: var(--text); }

.lang-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 6px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 120ms ease, color 120ms ease;
}
.lang-toggle:hover { border-color: var(--border-strong); color: var(--text); }
.lang-toggle .sep { color: var(--border-strong); margin: 0 4px; }
.lang-toggle .active { color: var(--accent); }

@media (max-width: 720px) {
  .nav { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */

.hero { padding: clamp(48px, 7vw, 96px) 0 clamp(64px, 10vw, 128px); border-top: 0; }
.hero-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}
.hero-portrait img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border-strong);
  box-shadow: 0 0 0 6px rgba(212, 161, 74, 0.06), 0 12px 40px rgba(0,0,0,0.5);
}
.hero-text { min-width: 0; }
.hero-text h1 { margin-bottom: 16px; }
.hero-tagline {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 4px;
}
.hero-oneliner {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(18px, 1.8vw, 22px);
  color: var(--text);
  margin: 0 0 24px;
}

.role-row {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
}
.role-row .sep { color: var(--border-strong); }
.role-chip {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
}
.role-org { font-size: 14px; color: var(--text); font-weight: 500; }
.role-title { font-family: var(--mono); font-size: 11px; color: var(--text-dim); letter-spacing: 0.06em; text-transform: uppercase; }

.contact-row {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 14px;
  align-items: center;
}
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: border-color 120ms ease, color 120ms ease, background 120ms ease;
}
.icon-link:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.icon-link img { display: block; opacity: 0.85; }
.icon-link:hover img { opacity: 1; filter: brightness(0) saturate(100%) invert(74%) sepia(45%) saturate(471%) hue-rotate(355deg) brightness(89%) contrast(89%); }

.scroll-hint {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: clamp(40px, 6vw, 80px);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.scroll-hint:hover { color: var(--accent); }

@media (max-width: 720px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: left;
    gap: 24px;
  }
  .hero-portrait img { width: 140px; height: 140px; }
}

/* ============================================================
   Sobre
   ============================================================ */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}
.about-prose p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
}
.about-prose p strong { color: var(--text); font-weight: 500; }
.about-prose p:first-child::first-line {
  font-family: var(--serif);
  font-style: italic;
  color: var(--text);
  font-size: 18px;
  letter-spacing: -0.01em;
}

.about-side h3.eyebrow { margin-bottom: 14px; }
.highlights {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}
.highlights li {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text);
}
.highlights .key {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.highlights a { color: var(--accent); }

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Áreas
   ============================================================ */

.section-helper {
  color: var(--text-dim);
  font-size: 13px;
  margin: -16px 0 24px;
}
.area-pills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}
.area-pill {
  background: var(--bg-elev);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 120ms ease;
}
.area-pill:hover { border-color: var(--accent); color: var(--text); }
.area-pill.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   Papéis (atuação)
   ============================================================ */

.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
}
.role-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
  transition: border-color 120ms ease, transform 120ms ease;
}
.role-card:hover { border-color: var(--border-strong); }
.role-card header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.role-card header h3 { font-family: var(--serif); font-size: 22px; }
.role-period {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.role-card .role-title {
  display: inline-block;
  margin: 4px 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.role-card p { font-size: 14px; line-height: 1.6; }
.chip-row {
  list-style: none;
  margin: 12px 0 12px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  display: inline-block;
  background: var(--bg-elev-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
}
.chip:hover { color: var(--accent); border-color: var(--accent-line); }
.chip-private {
  color: var(--text-dim);
  border-style: dashed;
  cursor: default;
}
.chip-private:hover { color: var(--text-dim); border-color: var(--border); }
.role-link {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
}
.role-link:hover { color: var(--accent); }

/* ============================================================
   Projetos em destaque
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: clamp(16px, 2vw, 24px);
}
.project-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 120ms ease;
}
.project-card[hidden] { display: none; }
.project-card:hover { border-color: var(--accent-line); }
.project-card h3 { font-family: var(--mono); font-size: 14px; letter-spacing: 0; }
.project-card h3 a { color: var(--text); }
.project-card h3 a:hover { color: var(--accent); }
.project-card p {
  font-size: 13px;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.55;
}
.project-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  background: transparent;
}
.tag-area { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }
.tag-mono { color: var(--text-muted); }
.stack-row {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project-foot {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}
.project-foot .stars { color: var(--accent); }
.project-foot a { color: var(--text-muted); }
.project-foot a:hover { color: var(--accent); }
.project-foot .demo-link::before { content: "· "; color: var(--text-dim); }

/* ============================================================
   Ensino, pesquisa & divulgação
   ============================================================ */

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: clamp(20px, 3vw, 36px);
}
.teach-block h3.eyebrow { margin-bottom: 12px; color: var(--accent); }
.teach-block ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--border);
}
.teach-block li {
  font-size: 13.5px;
  color: var(--text);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.45;
}

/* ============================================================
   Publicações
   ============================================================ */

.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}
.pub-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.pub-year {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: var(--accent);
  line-height: 1;
}
.pub-title { font-size: 15px; line-height: 1.45; color: var(--text); margin-bottom: 4px; }
.pub-title a { color: var(--text); border-bottom: 1px solid var(--border-strong); }
.pub-title a:hover { color: var(--accent); border-color: var(--accent); }
.pub-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.pub-first { color: var(--accent); border-color: var(--accent-line); }
.pub-authors {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.pub-cta { margin-top: 24px; }
.pub-cta a {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  border-bottom: 1px solid var(--accent-line);
}
.pub-cta a:hover { border-color: var(--accent); }

/* ============================================================
   Open source
   ============================================================ */

.repo-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-bottom: 20px;
}
#repo-search {
  flex: 1 1 220px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
}
#repo-search::placeholder { color: var(--text-dim); }
#repo-search:focus { outline: none; border-color: var(--accent-line); }
.recent-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
}
.recent-toggle input { accent-color: var(--accent); }
.lang-pills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.lang-pill {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 11px;
  cursor: pointer;
}
.lang-pill:hover { color: var(--text); border-color: var(--border-strong); }
.lang-pill.is-active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.repo-table-wrap { overflow-x: auto; }
.repo-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.repo-table th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 500;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.repo-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.repo-table tr[hidden] { display: none; }
.repo-table .mono { font-family: var(--mono); font-size: 12px; }
.repo-table .num { text-align: right; color: var(--accent); }
.repo-table .dim { color: var(--text-dim); }
.repo-table tr:hover td { background: rgba(212, 161, 74, 0.03); }
.repo-empty {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 14px;
  text-align: center;
}

/* ============================================================
   Contato + footer
   ============================================================ */

.contact-cta {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2vw, 26px);
  color: var(--text);
  max-width: 60ch;
  margin: -8px 0 32px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.contact-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.contact-list li {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.contact-list .key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.contact-list a { color: var(--text); }
.contact-list a:hover { color: var(--accent); }

.foot {
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
.foot-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
}
.foot-inner a { color: var(--text-muted); border-bottom: 1px dotted var(--border-strong); }
.foot-inner a:hover { color: var(--accent); border-color: var(--accent); }