/* Revelação - "darkroom" theme, adapted from Web Riddle JS.
   Light: cream photographic paper with grain; dark: a darkroom lit by the
   red safelight. Accent: safelight orange-red #d94f2b. */

:root {
  --papel: #ece6da;
  --cartao: #f8f4ec;
  --texto: #1c1a17;
  --suave: #5a534a;
  --borda: #d8cfc0;
  --borda-forte: #a89d8c;
  --luz: #d94f2b;
  --luz-texto: #a8361a;
  --luz-fundo: #f6e3d9;
  --luz-halo: rgba(217, 79, 43, 0.45);
  --primario: #1c1a17;
  --primario-texto: #f8f4ec;
  --sucesso: #2f7d4a;
  --sucesso-fundo: #dcefe1;
  --alerta: #85550f;
  --alerta-fundo: #f6ecd6;
  --alerta-borda: #e2c995;
  --erro: #b02a24;
  --erro-fundo: #f8e1df;
  --codigo-inline: rgba(28, 26, 23, 0.08);
  --codigo-fundo: #161311;
  --codigo-texto: #ede6da;
  --painel: #1e1a17;
  --painel-claro: #2a241f;
  --painel-borda: #3d342d;
  --painel-texto: #ede6da;
  --painel-suave: #b0a596;
  --painel-luz: #ef6a45;
  --filme: #231e1a;
  --marca-filme: #e8a33a;
  --caixa-luz: #fbf8f1;
  --sombra: 0 1px 0 rgba(28, 26, 23, 0.06), 0 14px 30px -22px rgba(28, 26, 23, 0.55);
  --brilho: radial-gradient(ellipse 90% 55% at 50% -12%, rgba(217, 79, 43, 0.08), transparent 70%);
  --ruido: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .11 0 0 0 0 .1 0 0 0 0 .09 .16 0 0 0 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --raio: 10px;
  --facil: cubic-bezier(0.2, 0.8, 0.2, 1);
  --fonte-titulo: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --fonte-texto: "Atkinson Hyperlegible Next", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --mono: "IBM Plex Mono", "Cascadia Code", Consolas, "SFMono-Regular", Menlo, monospace;
  accent-color: var(--luz);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --papel: #0e0c0b;
    --cartao: #181513;
    --texto: #ede6da;
    --suave: #b0a596;
    --borda: #2c2622;
    --borda-forte: #4a4038;
    --luz: #ef6a45;
    --luz-texto: #f2845f;
    --luz-fundo: #2d1913;
    --luz-halo: rgba(239, 106, 69, 0.45);
    --primario: #ef6a45;
    --primario-texto: #140f0c;
    --sucesso: #6fcf8e;
    --sucesso-fundo: #16301f;
    --alerta: #f0c26a;
    --alerta-fundo: #2b2415;
    --alerta-borda: #5a4720;
    --erro: #ff8a80;
    --erro-fundo: #3a1c1c;
    --codigo-inline: rgba(237, 230, 218, 0.1);
    --codigo-fundo: #0a0908;
    --painel: #141110;
    --painel-claro: #221d1a;
    --painel-borda: #362e28;
    --filme: #1d1916;
    --sombra: 0 1px 0 rgba(0, 0, 0, 0.3), 0 16px 32px -24px rgba(0, 0, 0, 0.9);
    --brilho: radial-gradient(ellipse 90% 55% at 50% -12%, rgba(239, 106, 69, 0.16), transparent 70%);
    --ruido: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .93 0 0 0 0 .9 0 0 0 0 .85 .06 0 0 0 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background-color: var(--papel);
  background-image: var(--brilho), var(--ruido);
  background-repeat: no-repeat, repeat;
  background-size: 100% 640px, 180px 180px;
  color: var(--texto);
  font-family: var(--fonte-texto);
  font-size: 1rem;
  line-height: 1.55;
  /* Beginners must see code exactly as typed, not as ligatures. */
  font-variant-ligatures: none;
}

code,
pre,
textarea {
  font-family: var(--mono);
}

:focus-visible {
  outline: 3px solid var(--luz);
  outline-offset: 2px;
}

/* Headings focused by script (screen-reader landing) need no ring. */
[tabindex="-1"]:focus {
  outline: none;
}

.visualmente-oculto {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- Icons ---------- */

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icone {
  flex-shrink: 0;
  width: 1.15em;
  height: 1.15em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.2em;
}

/* ---------- Header ---------- */

.topo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 14px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--borda);
  background: color-mix(in srgb, var(--cartao) 88%, transparent);
}

.topo-marca {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.logo-filme {
  fill: var(--filme);
}

.logo-furos {
  fill: none;
  stroke: var(--papel);
  stroke-width: 2.5;
}

.logo-luz {
  fill: var(--luz);
  filter: drop-shadow(0 0 4px var(--luz-halo));
}

h1 {
  margin: 0;
  font-family: var(--fonte-titulo);
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.015em;
}

.subtitulo {
  margin: 2px 0 0;
  color: var(--suave);
  font-size: 0.9rem;
}

/* Colour calibration strip, like the ones printed beside test photos. */
.barra-cores {
  display: flex;
  flex: 0 1 176px;
  height: 10px;
  overflow: hidden;
  border: 1px solid var(--borda-forte);
  border-radius: 3px;
}

.barra-cores span {
  flex: 1;
}

.barra-cores span:nth-child(1) { background: #f4f1ea; }
.barra-cores span:nth-child(2) { background: #e9c93a; }
.barra-cores span:nth-child(3) { background: #3fb4c4; }
.barra-cores span:nth-child(4) { background: #4f9a3c; }
.barra-cores span:nth-child(5) { background: #b2449a; }
.barra-cores span:nth-child(6) { background: #d94f2b; }
.barra-cores span:nth-child(7) { background: #2f4fa8; }
.barra-cores span:nth-child(8) { background: #1c1a17; }

@media (max-width: 560px) {
  .barra-cores {
    display: none;
  }
}

.topo-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.info-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--borda);
  border-radius: 999px;
  background: var(--cartao);
  color: var(--suave);
}

.info-item strong {
  color: var(--texto);
  font-variant-numeric: tabular-nums;
}

#app-tempo {
  font-family: var(--mono);
  font-weight: 600;
}

/* ---------- Progress: a strip of film ---------- */

.filme {
  padding: 18px clamp(16px, 4vw, 40px) 4px;
  overflow-x: auto;
}

.filme-rolo {
  display: flex;
  width: max-content;
  margin: 0 auto;
  padding: 20px 8px;
  list-style: none;
  border-radius: 4px;
  /* Sprocket holes along both edges. */
  background:
    linear-gradient(90deg, var(--papel) 0 9px, transparent 9px 18px) 6px 6px / 18px 7px repeat-x,
    linear-gradient(90deg, var(--papel) 0 9px, transparent 9px 18px) 6px calc(100% - 6px) / 18px 7px repeat-x,
    var(--filme);
  box-shadow: var(--sombra);
}

.filme-rolo li {
  padding: 0 3px;
}

.quadro-filme {
  display: grid;
  justify-items: center;
  gap: 3px;
  padding: 0;
  border: 0;
  border-radius: 3px;
  background: none;
  color: #8a7d71;
  font: inherit;
  cursor: pointer;
}

.quadro-imagem {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1px;
  width: 56px;
  height: 42px;
  border-radius: 2px;
  background: repeating-linear-gradient(135deg, #2e2824 0 4px, #342d28 4px 8px);
  transition: transform 160ms var(--facil), box-shadow 160ms var(--facil);
}

.quadro-imagem .icone {
  width: 18px;
  height: 18px;
}

.quadro-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1;
}

.quadro-marca {
  color: var(--marca-filme);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.quadro-filme:not(:disabled):hover .quadro-imagem {
  transform: translateY(-2px);
}

.quadro-filme:focus-visible {
  outline-offset: 3px;
}

.quadro-filme:disabled {
  cursor: not-allowed;
}

.quadro-filme.velada .quadro-marca {
  opacity: 0.5;
}

/* On the table now: lit by the safelight. */
.quadro-filme.na-mesa .quadro-imagem {
  background: radial-gradient(circle at 50% 45%, #f58a66, #c2401f);
  color: #1c1a17;
}

/* Revealed: a positive print on paper. */
.quadro-filme.revelada .quadro-imagem {
  background: #f3efe6;
  color: #1c1a17;
}

.quadro-filme.atual .quadro-imagem {
  box-shadow: 0 0 0 2px var(--filme), 0 0 0 4px var(--painel-luz);
  animation: pulso 2.4s var(--facil) infinite;
}

.quadro-filme.acendendo .quadro-imagem {
  animation: acender 900ms var(--facil) both;
}

@media (max-width: 560px) {
  .quadro-imagem {
    width: 44px;
    height: 34px;
  }

  .quadro-imagem .icone {
    width: 15px;
    height: 15px;
  }
}

/* ---------- Layout ---------- */

main {
  padding: 16px clamp(16px, 4vw, 40px) 40px;
}

.grade {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .grade {
    grid-template-columns: minmax(0, 1fr);
  }
}

.cartao {
  padding: 20px;
  border: 1px solid var(--borda);
  border-radius: var(--raio);
  background: var(--cartao);
  box-shadow: var(--sombra);
}

/* Not sticky: the light table can be taller than the screen. */
.lateral {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.carregando {
  color: var(--suave);
  text-align: center;
}

/* ---------- Welcome ---------- */

.boas-vindas {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  max-width: 840px;
  margin: 32px auto;
  padding: 28px;
}

@media (max-width: 640px) {
  .boas-vindas {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    margin: 16px auto;
    padding: 20px;
  }

  .ilustracao {
    max-width: 170px;
    justify-self: center;
  }
}

.boas-vindas h2 {
  margin: 0 0 6px;
  font-family: var(--fonte-titulo);
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.boas-vindas-texto > p {
  margin: 0 0 18px;
}

.boas-vindas > *,
.boas-vindas-texto > * {
  animation: subir 520ms var(--facil) both;
}

.boas-vindas-texto > :nth-child(2) {
  animation-delay: 80ms;
}

.boas-vindas-texto > :nth-child(3) {
  animation-delay: 160ms;
}

.boas-vindas-texto > :nth-child(4) {
  animation-delay: 240ms;
}

/* Illustration: an enlarger, a tray and a print slowly developing. */
.ilustracao {
  width: 100%;
  height: auto;
}

.il-halo {
  fill: var(--luz-halo);
  animation: halo 3.6s ease-in-out infinite;
}

.il-lampada {
  fill: var(--luz);
}

.il-base,
.il-cabeca {
  fill: var(--painel);
}

.il-coluna {
  fill: var(--borda-forte);
}

.il-fole {
  fill: var(--painel-claro);
  stroke: var(--painel-borda);
  stroke-linejoin: round;
}

.il-lente {
  fill: #6f8894;
}

.il-luz {
  fill: #f6e7b8;
  opacity: 0.5;
}

.il-papel {
  fill: #f8f4ec;
  stroke: var(--borda-forte);
}

.il-bandeja {
  fill: var(--painel-claro);
}

.il-liquido {
  fill: none;
  stroke: var(--luz);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.6;
}

.il-foto {
  animation: revelar-foto 5s ease-in-out infinite alternate;
}

.il-foto-papel {
  fill: #f3efe6;
}

.il-foto-sol {
  fill: var(--marca-filme);
}

.il-foto-serra {
  fill: #1c1a17;
}

/* ---------- Plate card ---------- */

.etapa {
  border-top: 6px solid var(--luz);
}

.etapa.revelando {
  animation: revelar 900ms var(--facil) both;
}

.etapa-cabeca {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

.placa {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 2px;
  width: 64px;
  height: 64px;
  border: 2px solid var(--luz);
  border-radius: 4px;
  background: var(--luz-fundo);
  color: var(--luz-texto);
  transform: rotate(-3deg);
  box-shadow: inset 0 0 0 3px var(--cartao);
}

.placa .icone {
  width: 18px;
  height: 18px;
}

.placa-num {
  font-family: var(--fonte-titulo);
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 0.9;
}

.rotulo {
  margin: 0;
  color: var(--suave);
  font-size: 0.9rem;
  font-weight: 700;
}

.etapa h2 {
  margin: 2px 0 0;
  font-family: var(--fonte-titulo);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.etapa h3 {
  margin: 20px 0 8px;
}

.conceitos {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.conceitos li {
  padding: 1px 8px;
  border: 1px solid var(--borda-forte);
  border-radius: 4px;
  color: var(--suave);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.historia {
  color: var(--suave);
}

.desafio {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--borda-forte);
}

:not(pre) > code {
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--codigo-inline);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

pre {
  margin: 12px 0;
  padding: 14px 16px;
  overflow-x: auto;
  border-radius: 8px;
  background: var(--codigo-fundo);
  color: var(--codigo-texto);
  font-size: 0.88rem;
  line-height: 1.6;
}

.nota {
  color: var(--suave);
  font-size: 0.85rem;
}

/* Glossary: a term is a small button that opens an explanation balloon. */
.termo {
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 1px dotted currentColor;
  border-radius: 0;
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  cursor: help;
}

.termo:hover,
.termo[aria-expanded="true"] {
  color: var(--luz-texto);
  border-bottom-style: solid;
}

.termo:focus-visible {
  outline: 2px solid var(--luz);
  outline-offset: 2px;
  border-radius: 2px;
}

.balao {
  position: fixed;
  inset: auto;
  z-index: 50;
  display: block;
  width: max-content;
  max-width: min(320px, 100vw - 32px);
  margin: 0;
  padding: 12px 14px;
  overflow: visible;
  border: 1px solid var(--borda-forte);
  border-radius: var(--raio);
  background: var(--cartao);
  box-shadow: var(--sombra);
  color: var(--texto);
  font-family: var(--fonte-texto);
  font-size: 0.88rem;
  font-weight: 400;
  line-height: 1.45;
  text-align: left;
  white-space: normal;
  overflow-wrap: normal;
  opacity: 0;
  transform: translateY(4px) scale(0.97);
  transform-origin: top left;
  transition: opacity 160ms var(--facil), transform 160ms var(--facil);
}

.balao[data-lado="cima"] {
  transform: translateY(-4px) scale(0.97);
  transform-origin: bottom left;
}

.balao.visivel {
  opacity: 1;
  transform: none;
}

.balao-titulo {
  display: block;
  margin-bottom: 6px;
  color: var(--luz-texto);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
}

.balao-linha {
  display: block;
  margin-bottom: 6px;
  color: var(--suave);
}

.balao-linha strong {
  color: var(--texto);
}

.balao a {
  color: var(--luz-texto);
  font-weight: 700;
}

/* ---------- Plate content ---------- */

.ficha {
  margin: 12px 0;
  padding: 12px 16px;
  border: 1px solid var(--borda-forte);
  border-radius: 8px;
  background: var(--papel);
}

.ficha-titulo {
  margin: 0 0 8px;
  color: var(--luz-texto);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ficha dl {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 4px 14px;
  margin: 0;
}

.ficha dt {
  font-weight: 700;
}

.ficha dd {
  margin: 0;
}

.amostra {
  display: inline-block;
  width: 1.4em;
  height: 1.4em;
  border: 1px solid var(--borda-forte);
  border-radius: 4px;
  vertical-align: -0.3em;
}

.legenda-formatos {
  padding: 8px 12px;
  border: 1px dashed var(--borda-forte);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.casos {
  display: grid;
  gap: 8px;
  padding-left: 1.5em;
}

.casos li::marker {
  color: var(--luz-texto);
  font-family: var(--mono);
  font-weight: 600;
}

.tabela-aparelhos {
  width: 100%;
  margin: 10px 0;
  border-collapse: collapse;
}

.tabela-aparelhos th,
.tabela-aparelhos td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--borda);
  text-align: left;
  vertical-align: top;
}

.tabela-aparelhos th {
  color: var(--suave);
  font-size: 0.85rem;
}

.tabela-aparelhos td + td {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.resumo-final {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 16px 0;
  padding: 16px;
  border: 1px solid var(--sucesso);
  border-radius: 8px;
  background: var(--sucesso-fundo);
}

.resumo-final dt {
  font-weight: 700;
}

.resumo-final dd {
  margin: 0;
  overflow-wrap: anywhere;
}

/* ---------- Plate labs (built by each plate's setup) ---------- */

.lab {
  display: grid;
  gap: 10px;
  margin: 14px 0;
  padding: 14px;
  border: 1px solid var(--borda);
  border-radius: 8px;
  background: var(--papel);
}

.lab:empty {
  display: none;
}

.lab > .botao {
  justify-self: start;
}

.lab-controles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.lab-campo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
}

.lab-campo input[type="range"] {
  width: clamp(120px, 30vw, 220px);
}

.lab-campo output {
  min-width: 5ch;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* Scrollable viewer. Children are centred with auto margins, which drop
   to zero when the content overflows, so every edge stays reachable. */
.lab-visor {
  display: flex;
  max-height: 340px;
  overflow: auto;
  border: 1px solid var(--borda-forte);
  border-radius: 6px;
  background: var(--caixa-luz);
}

.lab-visor > * {
  flex: none;
  display: block;
  margin: auto;
}

.lab-visor-quadrado {
  aspect-ratio: 1;
  max-height: none;
}

.lab-quadro {
  position: relative;
  line-height: 0;
}

.lab-pixels {
  display: block;
}

.lab-mira {
  position: absolute;
  top: 0;
  left: 0;
  outline: 2px solid #ffffff;
  box-shadow: 0 0 0 3px #1c1a17;
  pointer-events: none;
}

.lab-leitura {
  margin: 0;
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--codigo-fundo);
  color: var(--codigo-texto);
  font-family: var(--mono);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.lab-leitura:empty {
  display: none;
}

.lab-miniatura {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--borda-forte);
  border-radius: 4px;
}

.lab-lados {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 520px) {
  .lab-lados {
    grid-template-columns: minmax(0, 1fr);
  }
}

.lab-painel {
  display: grid;
  gap: 6px;
  margin: 0;
}

.lab-painel figcaption {
  color: var(--suave);
  font-family: var(--mono);
  font-size: 0.8rem;
  text-align: center;
}

.lab-gota {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

@media (max-width: 560px) {
  .lab-gota {
    grid-template-columns: minmax(0, 1fr);
  }
}

.lab-placa {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  border: 1px solid var(--borda-forte);
  border-radius: 6px;
  background: var(--caixa-luz);
}

.lab-fantasma {
  fill: rgba(31, 111, 106, 0.25);
  stroke: #1f6f6a;
  stroke-width: 2;
  stroke-linejoin: round;
}

.lab-marca circle {
  stroke: #1c1a17;
  stroke-width: 1.5;
}

.lab-marca.ok circle {
  fill: #2f7d4a;
}

.lab-marca.falha circle {
  fill: #d94f2b;
}

.lab-placa text {
  fill: #1c1a17;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
}

.lab-checagem {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.85rem;
}

.lab-checagem li {
  padding: 4px 8px;
  border-left: 3px solid var(--borda-forte);
  border-radius: 4px;
}

.lab-checagem li[data-status="ok"] {
  border-left-color: var(--sucesso);
  background: var(--sucesso-fundo);
}

.lab-checagem li[data-status="falha"] {
  border-left-color: var(--erro);
  background: var(--erro-fundo);
}

.lab-revelado {
  padding: 14px;
  border: 2px solid var(--luz);
  border-radius: 8px;
  background: var(--caixa-luz);
}

.lab-revelado svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 auto;
  fill: #1c1a17;
}

.lab-revelado.revelando {
  animation: revelar 1.2s var(--facil) both;
}

.lab-niveis {
  display: inline-flex;
}

.lab-niveis .botao {
  border-radius: 0;
}

.lab-niveis .botao + .botao {
  margin-left: -1px;
}

.lab-niveis .botao:first-child {
  border-radius: 8px 0 0 8px;
}

.lab-niveis .botao:last-child {
  border-radius: 0 8px 8px 0;
}

.lab-niveis .botao[aria-pressed="true"] {
  position: relative;
  border-color: var(--primario);
  background: var(--primario);
  color: var(--primario-texto);
}

.lab-cubo {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border: 1px solid var(--borda-forte);
  border-radius: 6px;
  background: var(--caixa-luz);
}

.lab-cubo path {
  stroke: #1c1a17;
  stroke-width: 1.5;
  stroke-linejoin: round;
}

.lab-cubo .face-topo {
  fill: #f2a488;
}

.lab-cubo .face-esquerda {
  fill: #d94f2b;
}

.lab-cubo .face-direita {
  fill: #a8361a;
}

.lab-cubo .aresta {
  fill: none;
  stroke-width: 1;
  opacity: 0.8;
}

/* ---------- Hints ---------- */

.dicas {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.dicas:empty {
  display: none;
}

.dicas .botao {
  justify-self: start;
}

.dica {
  padding: 10px 14px;
  border: 1px solid var(--alerta-borda);
  border-radius: 8px;
  background: var(--alerta-fundo);
}

.dica.nova {
  animation: deslizar 360ms var(--facil) both;
}

.dica-titulo {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  color: var(--alerta);
  font-weight: 700;
}

/* ---------- Forms and buttons ---------- */

.linha-form {
  display: grid;
  gap: 6px;
}

.linha-form label {
  font-weight: 700;
}

.linha {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.linha input {
  flex: 1 1 200px;
  min-width: 0;
}

input:not([type="checkbox"]):not([type="range"]),
textarea,
select {
  padding: 10px 12px;
  border: 1px solid var(--borda-forte);
  border-radius: 8px;
  background: var(--cartao);
  color: var(--texto);
  font: inherit;
}

input[type="checkbox"] {
  width: 1.1em;
  height: 1.1em;
  margin: 0;
}

input::placeholder,
textarea::placeholder {
  color: var(--suave);
  opacity: 0.8;
}

input[readonly],
input:disabled {
  background: var(--papel);
}

.resposta {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--borda);
}

.resposta input {
  font-family: var(--mono);
}

.treme {
  animation: treme 380ms var(--facil);
}

.botao {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--borda-forte);
  border-radius: 8px;
  background: var(--cartao);
  color: var(--texto);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms var(--facil), border-color 120ms var(--facil), box-shadow 120ms var(--facil);
}

.botao .icone {
  transition: transform 160ms var(--facil);
}

.botao:hover:not(:disabled) {
  border-color: var(--luz);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -10px rgba(28, 26, 23, 0.6);
}

.botao:hover:not(:disabled) .icone {
  transform: translateX(1px) rotate(-6deg);
}

.botao:active:not(:disabled) {
  transform: scale(0.97);
  box-shadow: none;
}

.botao.primario {
  border-color: var(--primario);
  background: var(--primario);
  color: var(--primario-texto);
}

.botao.perigo {
  color: var(--erro);
}

.botao:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.acoes-etapa {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.mensagem {
  min-height: 1.5em;
  margin: 4px 0 0;
}

.mensagem[data-status="error"] {
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--erro-fundo);
  color: var(--erro);
}

.mensagem[data-status="warning"] {
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--alerta-fundo);
  color: var(--alerta);
}

.mensagem[data-status="success"] {
  color: var(--sucesso);
  font-weight: 700;
}

.mensagem[data-status="info"] {
  color: var(--suave);
}

/* ---------- Progress code ---------- */

.restaurar {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px dashed var(--borda-forte);
}

.restaurar summary {
  cursor: pointer;
  color: var(--suave);
}

.restaurar form {
  margin-top: 10px;
}

.painel-codigo {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--luz);
  border-radius: var(--raio);
  background: var(--luz-fundo);
  animation: deslizar 360ms var(--facil) both;
}

.painel-codigo h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.painel-codigo p {
  margin: 0 0 10px;
}

#app-codigo-progresso,
#app-codigo-restaurar {
  width: 100%;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.4;
  word-break: break-all;
  resize: vertical;
}

#app-codigo-progresso {
  margin-bottom: 8px;
  background: var(--cartao);
}

/* ---------- Light table: dark editor panel with a lit preview ---------- */

.mesa {
  border-color: var(--painel-borda);
  background: var(--painel);
  color: var(--painel-texto);
}

.mesa h2,
.folha h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 1.1rem;
}

.mesa h2 .icone {
  color: var(--painel-luz);
}

.mesa .nota {
  color: var(--painel-suave);
}

.mesa-topo {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 8px;
  margin: -4px 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--painel-borda);
}

.mesa-topo .nota {
  margin: 0;
}

.mesa textarea {
  display: block;
  width: 100%;
  min-height: 220px;
  resize: vertical;
  border-color: var(--painel-borda);
  background: var(--codigo-fundo);
  color: var(--codigo-texto);
  font-size: 0.86rem;
  line-height: 1.5;
  tab-size: 2;
  overflow: auto;
  caret-color: var(--painel-luz);
}

.mesa-teclas {
  margin: 6px 0 10px;
}

.mesa-controles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-bottom: 10px;
}

.mesa-campo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--painel-suave);
  font-size: 0.9rem;
  font-weight: 700;
}

.mesa-campo input[type="checkbox"] {
  accent-color: var(--painel-luz);
}

.mesa select {
  padding: 6px 8px;
  border-color: var(--painel-borda);
  border-radius: 6px;
  background: var(--codigo-fundo);
  color: var(--painel-texto);
}

.mesa .botao {
  border-color: var(--painel-borda);
  background: var(--painel-claro);
  color: var(--painel-texto);
}

.mesa .botao:hover:not(:disabled) {
  border-color: var(--painel-luz);
}

.mesa :focus-visible {
  outline-color: var(--painel-luz);
}

.mesa-palco {
  display: flex;
  min-height: 160px;
  max-height: 420px;
  padding: 12px;
  overflow: auto;
  border: 1px solid var(--painel-borda);
  border-radius: 8px;
  background: var(--caixa-luz);
  box-shadow: inset 0 0 24px rgba(255, 244, 214, 0.9);
}

.mesa-palco.xadrez {
  background: repeating-conic-gradient(#d9d4cb 0 25%, #ffffff 0 50%) 0 0 / 16px 16px;
  box-shadow: none;
}

.mesa-quadro {
  flex: none;
  margin: auto;
  transition: opacity 160ms var(--facil), filter 160ms var(--facil);
}

/* The last good preview stays visible, dimmed, while the code has an error. */
.mesa-palco[data-desatualizada="sim"] {
  outline: 2px dashed #ff9b9b;
  outline-offset: -2px;
}

.mesa-palco[data-desatualizada="sim"] .mesa-quadro {
  opacity: 0.5;
  filter: grayscale(0.6);
}

.mesa-status {
  min-height: 1.4em;
  margin: 8px 0 0;
  color: var(--painel-suave);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.mesa-status[data-status="error"] {
  color: #ff9b9b;
}

.mesa-status[data-status="success"] {
  color: #7fd88f;
}

/* ---------- Contact sheet: one small print per revealed plate ---------- */

.folha h2 .icone {
  color: var(--luz-texto);
}

.folha ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.folha li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 5px 10px 5px 8px;
  border: 1px solid var(--borda-forte);
  border-radius: 3px;
  background: var(--papel);
  box-shadow: 0 2px 0 -1px var(--borda);
  font-size: 0.85rem;
}

.folha li:nth-child(odd) {
  transform: rotate(-0.8deg);
}

.folha li:nth-child(even) {
  transform: rotate(0.6deg);
}

.folha li .icone {
  color: var(--luz-texto);
}

.folha li span {
  color: var(--suave);
}

.folha li code {
  padding: 0;
  background: none;
  font-weight: 600;
}

.folha li.vazia {
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
  color: var(--suave);
  transform: none;
}

/* ---------- Motion ---------- */

@keyframes subir {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes deslizar {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* A print coming up in the developer tray: dark and warm, then clear. */
@keyframes revelar {
  from {
    filter: brightness(0.35) sepia(0.7) contrast(1.3);
  }
  to {
    filter: none;
  }
}

@keyframes acender {
  0% {
    transform: scale(0.8);
    filter: brightness(2.4);
  }
  60% {
    transform: scale(1.08);
  }
  100% {
    transform: none;
    filter: none;
  }
}

@keyframes treme {
  0%,
  100% {
    transform: none;
  }
  20% {
    transform: translateX(-6px);
  }
  40% {
    transform: translateX(5px);
  }
  60% {
    transform: translateX(-3px);
  }
  80% {
    transform: translateX(2px);
  }
}

@keyframes pulso {
  0% {
    box-shadow: 0 0 0 2px var(--filme), 0 0 0 4px var(--painel-luz), 0 0 0 4px var(--luz-halo);
  }
  70%,
  100% {
    box-shadow: 0 0 0 2px var(--filme), 0 0 0 4px var(--painel-luz), 0 0 0 11px transparent;
  }
}

@keyframes halo {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

@keyframes revelar-foto {
  from {
    opacity: 0.12;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}