/* ==========================================================================
   Acessibilidade — Tio Rafa
   Widget de acessibilidade: alto contraste, fonte para dislexia,
   espaçamento de texto, paleta para daltonismo, tamanho de fonte,
   destaque de links e redução de movimento.
   Este arquivo só contém estilos; o comportamento está em /js/accessibility.js
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@400;600;700&display=swap');

/* Link "pular para o conteúdo" — visível só ao navegar por teclado */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 100000;
  background: #111827;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: 12px;
}

/* ---------- Botão flutuante ---------- */
.a11y-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 99998;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #0f172a;
  color: #facc15;
  border: 2px solid #facc15;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25);
  font-size: 26px;
  line-height: 1;
  padding: 0;
}
.a11y-toggle:hover,
.a11y-toggle:focus-visible {
  background: #facc15;
  color: #0f172a;
}
.a11y-toggle svg { width: 28px; height: 28px; display: block; }

/* ---------- Painel ---------- */
.a11y-panel {
  position: fixed;
  right: 18px;
  bottom: 86px;
  z-index: 99999;
  width: min(340px, calc(100vw - 36px));
  max-height: min(600px, calc(100vh - 120px));
  overflow-y: auto;
  background: #ffffff;
  color: #111827;
  border-radius: 16px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 20px 45px rgba(0,0,0,0.25);
  padding: 18px;
  display: none;
}
.a11y-panel.open { display: block; }

.a11y-panel h2 {
  font-size: 1.05rem;
  margin: 0 0 4px;
  color: #0f172a;
}
.a11y-panel .a11y-sub {
  font-size: 0.82rem;
  color: #475569;
  margin: 0 0 14px;
}

.a11y-group {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid #e5e7eb;
}
.a11y-group:last-of-type {
  border-bottom: none;
  margin-bottom: 8px;
  padding-bottom: 0;
}

.a11y-label {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: #111827;
}

.a11y-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.a11y-btn {
  flex: 1;
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 9px 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #111827;
  cursor: pointer;
  text-align: center;
}
.a11y-btn:hover,
.a11y-btn:focus-visible {
  border-color: #0f172a;
}
.a11y-btn[aria-pressed="true"] {
  background: #0f172a;
  color: #facc15;
  border-color: #0f172a;
}

.a11y-stepper { display: flex; gap: 6px; }
.a11y-stepper button {
  width: 40px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  background: #f8fafc;
  font-weight: 900;
  cursor: pointer;
}
.a11y-stepper button:hover,
.a11y-stepper button:focus-visible { border-color: #0f172a; }
.a11y-stepper .a11y-fontsize-value {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  background: #f1f5f9;
  border-radius: 8px;
}

.a11y-reset {
  width: 100%;
  margin-top: 4px;
  background: transparent;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 10px;
  font-weight: 700;
  font-size: 0.85rem;
  color: #475569;
  cursor: pointer;
}
.a11y-reset:hover,
.a11y-reset:focus-visible { border-color: #0f172a; color: #0f172a; }

.a11y-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: transparent;
  border: none;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  color: #475569;
  padding: 6px;
}
.a11y-close:hover,
.a11y-close:focus-visible { color: #0f172a; }

/* ==========================================================================
   Estados aplicados ao <html> conforme as escolhas do visitante
   ========================================================================== */

/* Tamanho de fonte (escala global) */
html[data-a11y-fontscale] body {
  font-size: calc(1rem * (var(--a11y-fontscale, 100) / 100));
}

/* Espaçamento de texto ampliado */
html[data-a11y-spacing="on"] body {
  letter-spacing: 0.04em;
  word-spacing: 0.12em;
}
html[data-a11y-spacing="on"] p,
html[data-a11y-spacing="on"] li {
  line-height: 1.9 !important;
}

/* Fonte para leitura facilitada / dislexia */
html[data-a11y-dyslexia="on"] body,
html[data-a11y-dyslexia="on"] input,
html[data-a11y-dyslexia="on"] button {
  font-family: 'Lexend', Arial, Helvetica, sans-serif !important;
}
html[data-a11y-dyslexia="on"] p,
html[data-a11y-dyslexia="on"] li {
  line-height: 1.85 !important;
}
html[data-a11y-dyslexia="on"] * {
  text-align: left !important;
}

/* Destacar links */
html[data-a11y-links="on"] a:not(.a11y-toggle):not(.a11y-close) {
  text-decoration: underline !important;
  text-underline-offset: 3px;
  font-weight: 700 !important;
}

/* Reduzir movimento/animações */
html[data-a11y-motion="off"] * {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}

/* Alto contraste */
html[data-a11y-contrast="on"] body {
  background: #000000 !important;
  color: #ffffff !important;
}
html[data-a11y-contrast="on"] .topbar {
  background: #000000 !important;
  border-bottom: 3px solid #facc15;
}
html[data-a11y-contrast="on"] a {
  color: #ffff00 !important;
}
html[data-a11y-contrast="on"] .nav-link {
  color: #ffffff !important;
}
html[data-a11y-contrast="on"] .nav-link.active,
html[data-a11y-contrast="on"] .nav-link:hover {
  color: #ffff00 !important;
  text-decoration: underline;
}
html[data-a11y-contrast="on"] section,
html[data-a11y-contrast="on"] .section-light,
html[data-a11y-contrast="on"] .page-hero,
html[data-a11y-contrast="on"] .cta,
html[data-a11y-contrast="on"] .footer {
  background: #000000 !important;
  color: #ffffff !important;
  border-color: #ffffff !important;
}
html[data-a11y-contrast="on"] .tutorial-card,
html[data-a11y-contrast="on"] .kit-card,
html[data-a11y-contrast="on"] .card,
html[data-a11y-contrast="on"] .robocore-credit {
  background: #000000 !important;
  color: #ffffff !important;
  border: 2px solid #ffffff !important;
}
html[data-a11y-contrast="on"] h1,
html[data-a11y-contrast="on"] h2,
html[data-a11y-contrast="on"] h3,
html[data-a11y-contrast="on"] h4 {
  color: #facc15 !important;
}
html[data-a11y-contrast="on"] .btn,
html[data-a11y-contrast="on"] .btn-dark,
html[data-a11y-contrast="on"] .btn-light {
  background: #ffff00 !important;
  color: #000000 !important;
  border: 2px solid #ffffff !important;
}
html[data-a11y-contrast="on"] img {
  filter: contrast(1.1) grayscale(0.15);
}

/* Paleta amigável para daltonismo:
   troca verde por azul (menos ambíguo em casos de daltonismo
   vermelho-verde) e reforça o contraste geral de cores. */
html[data-a11y-colorblind="on"] {
  --verde: #1d4ed8 !important;
}
html[data-a11y-colorblind="on"] body {
  filter: contrast(1.08) saturate(1.12);
}

/* Foco visível reforçado para navegação por teclado, sempre ativo */
a:focus-visible,
button:focus-visible,
input:focus-visible,
.a11y-btn:focus-visible {
  outline: 3px solid #0f172a;
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .a11y-panel {
    right: 10px;
    left: 10px;
    width: auto;
    bottom: 80px;
  }
  .a11y-toggle {
    right: 12px;
    bottom: 12px;
  }
}