/* ============================================================
   Igor Almeida — perfil pessoal
   "O Caderno do Pedagogo" (v3)
   Tema escuro permanente, grafite-musgo + papel quadriculado,
   linha de margem tipo caderno escolar, títulos Fraunces.
   AAA por defeito. Spec: ../../DESIGN.md
   ============================================================ */

@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Medium.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("../fonts/Fraunces-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("../fonts/Fraunces-MediumItalic.woff2") format("woff2");
  font-weight: 500; font-style: italic; font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/JetBrainsMono-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/JetBrainsMono-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}

:root {
  /* Paleta grafite-musgo + rubrica. Hex sRGB; OKLCH canónico em DESIGN.md. */
  --bg:            #0b0f0d;   /* grafite com sopro de verde */
  --bg-elevated:   #101512;
  --border:        #1f2a24;
  --grid-line:     rgba(143, 179, 154, 0.045); /* quadrícula do caderno */
  --text:          #dcd9cc;   /* pergaminho quente */
  --text-muted:    #94a097;
  --accent-quiet:  #8fb39a;   /* verde-musgo, everyday */
  --accent-vivid:  #7ee787;   /* raríssimo: focus, selection, hover do CTA */
  --accent-deep:   #3a5a40;   /* underlines, bordas de chip */
  --rubrica:       #c98a76;   /* terracota esbatida: linha de margem, aspas */

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Ritmo */
  --measure: 65ch;
  --radius:  4px;
  --radius-pill: 999px;
  --grid-step: 26px;          /* passo da quadrícula */

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast:   120ms;
  --t-medium: 200ms;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  /* Papel quadriculado: quase invisível à distância, presente de perto. */
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--accent-vivid); color: var(--bg); }

/* ---------- Linha de margem (assinatura: caderno escolar) ---------- */
main {
  position: relative;
}
main::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: max(0.45rem, calc(50% - 505px));
  width: 1px;
  background: var(--rubrica);
  opacity: 0.38;
  pointer-events: none;
}

/* ---------- Skip-link ---------- */
.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  z-index: 100;
  padding: 0.55rem 0.9rem;
  background: var(--bg-elevated);
  border: 1px solid var(--accent-quiet);
  border-radius: var(--radius);
  color: var(--accent-quiet);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: 0.5rem; outline: 2px solid var(--accent-vivid); outline-offset: 3px; }

/* ---------- Links ---------- */
a {
  color: var(--accent-quiet);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: var(--accent-deep);
  transition: text-decoration-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
a:hover { text-decoration-color: var(--accent-quiet); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-vivid);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Container ---------- */
.container {
  width: min(960px, calc(100% - 2rem));
  margin-inline: auto;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.9rem 0;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-right: auto;
}
.brand::before { content: "> "; color: var(--accent-quiet); }
.brand:hover { color: var(--accent-quiet); }
.brand:hover::before { color: var(--accent-vivid); }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: color var(--t-fast) var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a[aria-current="page"] { color: var(--accent-quiet); }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
.lang-toggle a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.2rem 0.4rem;
  transition: color var(--t-fast) var(--ease);
}
.lang-toggle a:hover { color: var(--text); }
.lang-toggle a[aria-current="true"] { color: var(--accent-quiet); }
.lang-toggle .sep { color: var(--border); padding: 0 0.15rem; }

/* ---------- Tipografia ---------- */
h1, h2 {
  font-family: var(--font-display);
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0;
}
h1 {
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  line-height: 1.08;
  margin: 0.6rem 0 1.2rem;
  text-wrap: balance;
}
/* Heading quieter: H1 esbatido, escala intermédia, ar generoso. */
h1.h-quiet,
h2.h-quiet {
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  line-height: 1.12;
  color: color-mix(in oklab, var(--text-muted), var(--text) 45%);
  max-width: 24ch;
  text-wrap: balance;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.18;
  margin: 0 0 1rem;
}
h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-quiet);
  margin: 2.2rem 0 0.6rem;
}
p { max-width: var(--measure); margin: 0 0 1.1rem; }

.lead {
  font-family: var(--font-sans);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 400;
  letter-spacing: -0.005em;
  color: var(--text);
  max-width: var(--measure);
  line-height: 1.55;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-quiet);
  margin: 0;
}
.eyebrow::before { content: "// "; color: var(--accent-deep); }

/* ---------- Main / secções ---------- */
main { padding-bottom: 4rem; }
.hero { padding: 5.5rem 0 3rem; }
.section { padding: 3rem 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-header { max-width: var(--measure); margin-bottom: 1.6rem; }

/* Momento de entrada: uma vez, só no hero, cancelado por reduced-motion. */
@media (prefers-reduced-motion: no-preference) {
  .hero .eyebrow,
  .hero h1,
  .hero .lead,
  .hero p,
  .hero .actions {
    animation: rise 480ms var(--ease) backwards;
  }
  .hero h1 { animation-delay: 60ms; }
  .hero .lead { animation-delay: 120ms; }
  .hero p { animation-delay: 160ms; }
  .hero .actions { animation-delay: 220ms; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(0.6rem); }
  to   { opacity: 1; transform: none; }
}

/* ---------- Pull-quote (Fraunces itálico, aspas em rubrica) ---------- */
.pullquote {
  position: relative;
  margin: 2.6rem 0;
  padding: 0.4rem 0 0.4rem 1.6rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-style: italic;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text);
  max-width: 42ch;
}
.pullquote p { margin: 0; max-width: none; }
.pullquote::before {
  content: "«";
  position: absolute;
  left: 0;
  top: -0.3rem;
  font-style: normal;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--rubrica);
}
.pullquote p:last-of-type::after {
  content: "\00a0»";
  font-style: normal;
  color: var(--rubrica);
}

/* ---------- Botões ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.8rem; }
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  transition: border-color var(--t-fast) var(--ease),
              color       var(--t-fast) var(--ease),
              background  var(--t-medium) var(--ease);
}
.button:hover { border-color: var(--accent-quiet); color: var(--accent-quiet); }
.button.primary {
  border-color: var(--accent-quiet);
  color: var(--accent-quiet);
}
.button.primary:hover {
  background: var(--accent-vivid);
  border-color: var(--accent-vivid);
  color: var(--bg);
}

/* ---------- Lista de projetos (linhas, não cartões) ---------- */
.project-list {
  display: grid;
  gap: 0;
  margin-top: 1.5rem;
}
.project-card {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.project-card:last-child { border-bottom: none; }
.project-card h2 {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  margin: 0 0 0.35rem;
  font-weight: 600;
  letter-spacing: 0;
}
.project-card .project-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0 0 0.55rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.project-card p { margin: 0 0 0.45rem; }

/* ---------- Tags / chips ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.8rem; }
.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.18rem 0.6rem;
  border: 1px solid var(--accent-deep);
  color: var(--accent-quiet);
  border-radius: var(--radius-pill);
  background: transparent;
}

/* ---------- Timeline ---------- */
.timeline {
  display: grid;
  gap: 0;
  margin: 1.5rem 0;
  border-left: 1px solid var(--border);
  padding-left: 1.5rem;
}
.timeline-item {
  position: relative;
  padding: 0.6rem 0 1.4rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 1.05rem;
  width: 9px; height: 9px;
  background: var(--accent-quiet);
  border-radius: 50%;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item h2 {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
  letter-spacing: 0;
}

/* ---------- Listas limpas ---------- */
.list-clean {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 1.6rem;
  max-width: var(--measure);
}
.list-clean li {
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.98rem;
}
.list-clean li:last-child { border-bottom: none; }
.list-clean li::before {
  content: "·";
  color: var(--accent-quiet);
  margin-right: 0.6rem;
}

/* ---------- Princípios (index): definição + termo, sem cartões ---------- */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0 2.5rem;
  max-width: 60rem;
}
.principles > div { max-width: 34ch; }

/* ---------- Notice (indentação + tom, sem side-stripe) ---------- */
.notice {
  padding: 0.8rem 0 0 1.4rem;
  margin: 2rem 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-style: italic;
  max-width: var(--measure);
  border-top: 1px dashed var(--border);
  position: relative;
}
.notice::before {
  content: "//";
  position: absolute;
  left: 0;
  top: 0.85rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--accent-deep);
  letter-spacing: 0.06em;
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer a {
  color: var(--text-muted);
  text-decoration-color: var(--border);
}
.site-footer a:hover { color: var(--accent-quiet); text-decoration-color: var(--accent-deep); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  .nav { gap: 0.6rem; padding: 0.75rem 0; }
  .lang-toggle { margin-left: 0; padding-left: 0; border-left: none; }
  .hero { padding: 3rem 0 2rem; }
  .section { padding: 2.4rem 0; }
  h1 { margin-top: 0.4rem; }
  .pullquote { font-size: 1.2rem; }
}