/* Álgebra Linear. Folha de estilos do website. */

/* Fórmulas como na sebenta: símbolos em Fira Math (só os glifos usados, 12 KB, licença OFL),
   letras e algarismos em Futura Medium, ou Jost onde a Futura não está instalada. */
@font-face {
  font-family: "Fira Math AL";
  src: url(data:font/woff;base64,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) format("woff");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0028, U+0029, U+002B, U+002C, U+002E, U+002F, U+003C, U+003D, U+003E, U+005B, U+005D, U+007B, U+007C, U+007D, U+00B1, U+00B7, U+00D7, U+03B1, U+03B2, U+03B3, U+03B4, U+03B5, U+03B6, U+03B7, U+03B8, U+03B9, U+03BA, U+03BB, U+03BC, U+03BD, U+03BE, U+03BF, U+03C0, U+03C1, U+03C2, U+03C3, U+03C4, U+03C5, U+03C6, U+03C7, U+03C8, U+03C9, U+2026, U+2032, U+2033, U+211D, U+2192, U+2194, U+21D4, U+2208, U+2212, U+221A, U+221E, U+2260, U+2264, U+2265, U+22C5, U+27FA;
}

/* Layout: página única com cabeçalho fixo. O topo repete a capa da sebenta (filetes,
   título a negrito em azul-mar) e cada secção abre como os slides (título, subtítulo, filete). */
:root {
  /* Paleta dos slides e das animações (determinantes.py) */
  --fundo: #EBF1F4;
  --fundo-2: #E1E9EE;
  --papel: #FFFFFF;
  --tinta: #1A1A1A;
  --tinta-2: #3D4A52;
  --morto: #57646C;
  --mar: #1F4E6B;
  --mar-forte: #163A50;
  --alerta: #9B3B1F;
  --mata: #4A7C59;
  --realce: #D6E6EF;
  --realce-b: #F7DFD4;
  --linha: #D2DDE4;
  --filete: rgb(31 78 107 / 0.4);
  --sobre-cor: #FFFFFF;
  --vidro: rgb(255 255 255 / 0.86);
  --sombra: 0 1px 2px rgb(22 36 46 / 0.06), 0 14px 32px -16px rgb(22 36 46 / 0.32);
  --sombra-leve: 0 1px 2px rgb(22 36 46 / 0.05), 0 6px 18px -10px rgb(22 36 46 / 0.22);
  --fundo-video: #FFFFFF;
  --mata-suave: #E3EFE6;
  --alerta-suave: #F7E3DC;
  --claro: block;
  --escuro: none;

  /* Futura nos materiais; a Jost é a versão livre mais próxima */
  --f-texto: "Jost", Futura, "Futura PT", "Century Gothic", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --f-mat: "Fira Math AL", Futura, "Futura PT", "Jost", "Century Gothic", "Avenir Next", sans-serif;
  --t-0: 0.8125rem;
  --t-1: 0.9375rem;
  --t-2: 1.0625rem;
  --t-3: 1.3125rem;
  --t-4: clamp(1.75rem, 1.2rem + 1.8vw, 2.375rem);
  --t-5: clamp(2.9rem, 1.4rem + 5.6vw, 5.25rem);

  --raio: 10px;
  --largura: 1160px;
  --margem: clamp(16px, 4vw, 40px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fundo: #0E1920;
    --fundo-2: #0A1319;
    --papel: #1A2A35;
    --tinta: #EFEEE8;
    --tinta-2: #C6CFD3;
    --morto: #93A3AC;
    --mar: #7CC0E2;
    --mar-forte: #A3D4EC;
    --alerta: #EB9070;
    --mata: #7CC79A;
    --realce: #2C5162;
    --realce-b: #6E4032;
    --linha: #283A46;
    --filete: rgb(124 192 226 / 0.4);
    --sobre-cor: #16242E;
    --vidro: rgb(26 42 53 / 0.86);
    --sombra: 0 1px 2px rgb(0 0 0 / 0.35), 0 14px 32px -14px rgb(0 0 0 / 0.7);
    --sombra-leve: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 20px -10px rgb(0 0 0 / 0.6);
    --fundo-video: #16242E;
    --mata-suave: #1E3529;
    --alerta-suave: #3C2520;
    --claro: none;
    --escuro: block;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --fundo: #0E1920;
  --fundo-2: #0A1319;
  --papel: #1A2A35;
  --tinta: #EFEEE8;
  --tinta-2: #C6CFD3;
  --morto: #93A3AC;
  --mar: #7CC0E2;
  --mar-forte: #A3D4EC;
  --alerta: #EB9070;
  --mata: #7CC79A;
  --realce: #2C5162;
  --realce-b: #6E4032;
  --linha: #283A46;
  --filete: rgb(124 192 226 / 0.4);
  --sobre-cor: #16242E;
  --vidro: rgb(26 42 53 / 0.86);
  --sombra: 0 1px 2px rgb(0 0 0 / 0.35), 0 14px 32px -14px rgb(0 0 0 / 0.7);
  --sombra-leve: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 20px -10px rgb(0 0 0 / 0.6);
  --fundo-video: #16242E;
  --mata-suave: #1E3529;
  --alerta-suave: #3C2520;
  --claro: none;
  --escuro: block;
  color-scheme: dark;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
html:has(dialog[open]) { overflow: hidden; }
body {
  margin: 0;
  background: var(--fundo);
  color: var(--tinta);
  font-family: var(--f-texto);
  font-size: var(--t-2);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main { overflow-x: clip; }
img { max-width: 100%; display: block; }
h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 700; text-wrap: balance; }
p { margin: 0; }
a { color: var(--mar); text-underline-offset: 3px; }
button, input { font: inherit; color: inherit; }
i.var { font-style: italic; }

.limpo {
  appearance: none; background: none; border: 0; margin: 0; padding: 0;
  font: inherit; color: inherit; text-align: inherit; cursor: pointer;
}
.sr {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.icone {
  width: 1.25em; height: 1.25em; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.75;
  stroke-linecap: round; stroke-linejoin: round;
}
.so-claro { display: var(--claro); }
.so-escuro { display: var(--escuro); }
/* Dentro de um artefacto do claude.ai, os PDF só se descarregam pela capacidade downloads */
.artefacto:not(.descargas) .so-ficheiro { display: none; }

.contentor { max-width: var(--largura); margin-inline: auto; padding-inline: var(--margem); }

.saltar {
  position: absolute; left: 12px; top: -60px; z-index: 50;
  background: var(--mar); color: var(--sobre-cor); padding: 10px 16px; border-radius: 8px;
  font-weight: 600; text-decoration: none;
}
.saltar:focus { top: 12px; }

/* ── Cabeçalho fixo ── */
.topo {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: var(--vidro);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--linha);
}
.topo-in { display: flex; align-items: center; gap: 8px 20px; min-height: 64px; }
.marca {
  display: flex; align-items: center; gap: 10px; flex: none;
  font-weight: 700; font-size: 1.1875rem; color: var(--mar); text-decoration: none;
}
.marca svg { width: 32px; height: 32px; }
.logo-area { fill: var(--realce); }
.logo-tracos { fill: none; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.logo-u { stroke: var(--mar); }
.logo-v { stroke: var(--alerta); }
.nav { display: flex; gap: 2px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a {
  padding: 7px 13px; border-radius: 999px; white-space: nowrap;
  color: var(--tinta-2); text-decoration: none; font-weight: 500; font-size: var(--t-1);
  transition: background-color 0.15s, color 0.15s;
}
.nav a:hover { color: var(--mar); background: var(--realce); }
.nav a[aria-current="true"] { color: var(--mar); background: var(--realce); }
.icone-botao {
  display: inline-grid; place-items: center; flex: none;
  width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid var(--linha); background: var(--papel); color: var(--tinta-2);
  cursor: pointer; transition: border-color 0.15s, color 0.15s;
}
.icone-botao:hover:not(:disabled) { border-color: var(--mar); color: var(--mar); }
.icone-botao:disabled { opacity: 0.35; cursor: default; }
.icone-botao .icone { width: 20px; height: 20px; }

@media (max-width: 760px) {
  .topo-in { flex-wrap: wrap; padding-block: 8px 0; }
  .topo-in .icone-botao { margin-left: auto; }
  .nav { order: 3; width: 100%; margin-left: 0; padding-bottom: 8px; }
}

/* ── Abertura: a capa ── */
.abertura { padding-block: clamp(36px, 6vw, 76px) clamp(16px, 3vw, 36px); }
.abertura .contentor {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 68px); align-items: center;
}
@media (max-width: 900px) { .abertura .contentor { grid-template-columns: minmax(0, 1fr); } }
.capa { border-block: 2px solid var(--filete); padding-block: 20px 22px; margin-block: 0 24px; }
.capa h1 { font-size: var(--t-5); color: var(--mar); line-height: 0.98; letter-spacing: -0.012em; }
.capa-sub {
  margin-top: 12px; padding-left: 0.18em;
  font-size: clamp(1.15rem, 0.95rem + 0.8vw, 1.55rem); font-weight: 400; color: var(--tinta-2);
}
.entrada { font-size: 1.1875rem; line-height: 1.55; color: var(--tinta-2); max-width: 40ch; }
.atalhos {
  list-style: none; margin: 28px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; max-width: 540px;
}
.atalhos a {
  display: flex; align-items: center; gap: 12px; height: 100%;
  padding: 12px 14px; border: 1px solid var(--linha); border-radius: var(--raio);
  background: var(--papel); color: var(--tinta); text-decoration: none; box-shadow: var(--sombra-leve);
  transition: border-color 0.15s, transform 0.15s;
}
.atalhos a:hover { border-color: var(--mar); transform: translateY(-1px); }
.atalhos .icone { width: 28px; height: 28px; color: var(--mar); stroke-width: 1.6; }
.atalhos strong { display: block; font-weight: 600; line-height: 1.25; }
.atalhos small { display: block; font-size: var(--t-0); color: var(--morto); line-height: 1.35; }
@media (max-width: 380px) { .atalhos { grid-template-columns: minmax(0, 1fr); } }

/* ── Figura: transformação linear do plano ── */
.figura { margin: 0; min-width: 0; }
.figura-tela {
  position: relative; width: 100%; max-width: 100%; aspect-ratio: 54 / 46;
  border: 1px solid var(--linha); border-radius: 14px; background: var(--papel); overflow: hidden;
  box-shadow: var(--sombra-leve);
}
.figura canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.figura-pausa { position: absolute; right: 10px; top: 10px; width: 36px; height: 36px; }
.figura-pausa .icone { width: 16px; height: 16px; }
.leitura {
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
  padding: 16px 4px 0; font-size: 1.25rem; font-variant-numeric: tabular-nums;
}
/* As duas equações na mesma linha; cada parte é centrada na vertical, e o resultado fica à altura dos sinais de igual */
.equacoes { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 30px; }
.eq { display: flex; align-items: center; gap: 10px; }
.matriz {
  position: relative; display: inline-grid; grid-template-columns: repeat(2, auto);
  gap: 0 14px; padding: 2px 11px; line-height: 1.35;
}
.matriz::before, .matriz::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 7px;
  border: 2px solid var(--tinta);
}
.matriz::before { left: 0; border-right: 0; }
.matriz::after { right: 0; border-left: 0; }
.matriz span { min-width: 2.4ch; text-align: right; font-weight: 500; }
.matriz .c1 { color: var(--mar); }
.matriz .c2 { color: var(--alerta); }
.equacoes output { min-width: 3ch; font-weight: 600; color: var(--mata); }
.leitura-nota { font-size: var(--t-1); color: var(--morto); min-height: 1.6em; }

/* ── Secções ── */
.seccao { padding-block: clamp(52px, 7vw, 92px); }
.faixa { background: var(--fundo-2); border-block: 1px solid var(--linha); }
.cabecalho {
  display: flex; align-items: center; gap: 16px;
  padding-bottom: 16px; margin-bottom: clamp(26px, 4vw, 42px);
  border-bottom: 2px solid var(--filete);
}
.cab-icone {
  display: grid; place-items: center; flex: none;
  width: 52px; height: 52px; border-radius: 14px; background: var(--realce); color: var(--mar);
}
.cab-icone .icone { width: 28px; height: 28px; stroke-width: 1.6; }
.cabecalho h2 { font-size: var(--t-4); color: var(--mar); }
.cabecalho p { margin-top: 4px; font-size: var(--t-1); color: var(--morto); }

.rotulo {
  font-size: var(--t-0); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--morto);
}

/* Botões */
.botao {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px; border: 1.5px solid var(--mar);
  background: var(--papel); color: var(--mar); cursor: pointer;
  font-size: var(--t-1); font-weight: 600; line-height: 1.2; text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s;
}
.botao:hover { background: var(--realce); }
.botao .icone { width: 18px; height: 18px; }
.botao-cheio { background: var(--mar); color: var(--sobre-cor); }
.botao-cheio:hover { background: var(--mar-forte); border-color: var(--mar-forte); }
.botao:disabled { opacity: 0.45; pointer-events: none; }

/* Descarga dos PDF: rótulo e um botão por versão, com amostra da cor de fundo */
.descarregar { display: flex; flex-direction: column; gap: 10px; }
.descarregar-botoes { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; max-width: 400px; }
.descarregar .botao { justify-content: center; }
.amostra {
  width: 13px; height: 13px; border-radius: 3px; flex: none; margin-left: 2px;
  box-shadow: inset 0 0 0 1px rgb(120 135 145 / 0.6);
}
.amostra-claro { background: #FFFFFF; }
.amostra-escuro { background: #16242E; }

/* Indicação de que a capa abre o documento, só ao passar o rato ou com foco */
.abrir-selo {
  position: absolute; left: 50%; top: 50%; z-index: 1; pointer-events: none;
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 18px; border-radius: 999px;
  background: var(--mar); color: var(--sobre-cor); font-size: var(--t-1); font-weight: 600;
  box-shadow: var(--sombra); opacity: 0; transform: translate(-50%, -40%);
  transition: opacity 0.2s, transform 0.2s;
}
.abrir-selo .icone { width: 18px; height: 18px; }
:is(.pilha, .deck-capa):is(:hover, :focus-visible) .abrir-selo { opacity: 1; transform: translate(-50%, -50%); }

/* ── Documentos (sebenta e fichas) ── */
.doc { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
@media (max-width: 780px) { .doc { grid-template-columns: minmax(0, 1fr); } }
.doc-lado { display: flex; flex-direction: column; gap: 30px; }
.pilha { position: relative; display: block; width: min(100% - 56px, 250px); aspect-ratio: 560 / 792; margin: 6px 0 4px 6px; }
.pilha img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  border-radius: 3px; border: 1px solid var(--linha); box-shadow: var(--sombra); background: var(--papel);
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.pilha .tras { transform: translate(42px, 10px) rotate(5.5deg); }
.pilha .frente { transform: rotate(-1.5deg); }
.pilha:hover .tras, .pilha:focus-visible .tras { transform: translate(52px, 2px) rotate(8deg); }
.pilha:hover .frente, .pilha:focus-visible .frente { transform: translate(-4px, -4px) rotate(-2.5deg); }

/* Índice num painel, para se destacar do fundo */
.doc-painel {
  min-width: 0; padding: 20px 24px 22px; border-radius: 14px;
  background: var(--papel); border: 1px solid var(--linha); box-shadow: var(--sombra-leve);
}
.doc-painel .indice > li:last-child { border-bottom: 0; }
@media (max-width: 520px) { .doc-painel { padding: 14px 14px 16px; } }
.doc-meta { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-bottom: 14px; color: var(--morto); font-size: var(--t-1); }
.doc-meta b { color: var(--tinta); font-weight: 600; }
.doc-nota { margin-top: 18px; font-size: var(--t-1); color: var(--morto); max-width: 62ch; }

.indice { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linha); }
.indice > li { border-bottom: 1px solid var(--linha); }
.item-linha {
  display: grid; grid-template-columns: 5.2em minmax(0, 1fr) auto 36px;
  align-items: center; gap: 4px 16px; padding: 12px 0;
}
.codigo {
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  padding: 4px 8px; border-radius: 6px; background: var(--realce); color: var(--mar);
  font-size: var(--t-0); font-weight: 700; letter-spacing: 0.03em; white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.codigo .icone { width: 15px; height: 15px; stroke-width: 2; }
.item-prep .codigo { background: var(--realce-b); color: var(--alerta); }
.item-abrir { display: block; min-width: 0; padding: 4px 0; }
.item-titulo { display: block; font-weight: 500; line-height: 1.35; }
.item-abrir:hover .item-titulo { color: var(--mar); text-decoration: underline; text-decoration-thickness: 1px; }
.item-extra { display: block; margin-top: 2px; font-size: var(--t-0); color: var(--morto); }
.pag { color: var(--morto); font-size: var(--t-1); font-variant-numeric: tabular-nums; white-space: nowrap; }
.item-mais {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 999px; color: var(--morto);
}
.item-mais:hover { background: var(--realce); color: var(--mar); }
.item-mais .icone { width: 18px; height: 18px; transition: transform 0.2s; }
.item-mais[aria-expanded="true"] .icone { transform: rotate(180deg); }
.sub { list-style: none; margin: 0 0 14px calc(5.2em + 16px); padding: 0; }
.sub button {
  display: flex; justify-content: space-between; gap: 16px; width: 100%;
  padding: 5px 0; font-size: var(--t-1); color: var(--tinta-2); border-bottom: 1px dotted var(--linha);
}
.sub button:hover span:first-child { color: var(--mar); text-decoration: underline; }
.sub .pag { font-size: var(--t-0); }
@media (max-width: 520px) {
  .item-linha { grid-template-columns: auto minmax(0, 1fr) 36px; }
  .item-linha .pag { display: none; }
  .sub { margin-left: 0; }
}

/* ── Slides ── */
.decks { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 40px 36px; }
.deck { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.deck-capa {
  position: relative; display: block; width: 100%; max-width: 100%; aspect-ratio: 16 / 9;
  border-radius: 10px; overflow: hidden; border: 1px solid var(--linha); box-shadow: var(--sombra);
  background: var(--papel);
}
.deck-capa img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1); }
.deck-capa:hover img { transform: scale(1.025); }
.selo {
  position: absolute; right: 10px; bottom: 10px; padding: 3px 10px; border-radius: 999px;
  background: var(--vidro); color: var(--tinta-2); font-size: var(--t-0); font-weight: 500;
  border: 1px solid var(--linha);
}
.deck-corpo { display: flex; flex-direction: column; gap: 12px; }
.deck h3 { font-size: var(--t-3); }

/* ── Vídeos ── */
.serie + .serie { margin-top: 56px; }
.serie-cab { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 18px; margin-bottom: 22px; }
.serie-cab h3 { font-size: var(--t-3); }
.serie-cab p { color: var(--morto); font-size: var(--t-1); }
.videos {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 28px 22px;
}
.video { display: flex; flex-direction: column; gap: 12px; width: 100%; }
.video-poster {
  position: relative; display: block; width: 100%; max-width: 100%; aspect-ratio: 16 / 9;
  border-radius: 8px; overflow: hidden; border: 1px solid var(--linha); background: var(--papel);
  box-shadow: var(--sombra-leve);
}
.video-poster img { width: 100%; height: 100%; object-fit: cover; }
.video-play { position: absolute; left: 8px; bottom: 8px; }
.video-play span {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--mar); color: var(--sobre-cor); box-shadow: var(--sombra);
  transition: transform 0.2s;
}
.video-play .icone { width: 14px; height: 14px; margin-left: 2px; fill: currentColor; stroke: none; }
.video:hover .video-play span, .video:focus-visible .video-play span { transform: scale(1.12); }
.video-dur {
  position: absolute; right: 8px; bottom: 8px; padding: 1px 7px; border-radius: 4px;
  background: rgb(10 18 24 / 0.7); color: #FFFFFF; font-size: 12px; font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.video-texto { display: flex; gap: 12px; align-items: flex-start; }
.video-num {
  display: grid; place-items: center; flex: none; width: 28px; height: 28px; border-radius: 50%;
  border: 1.5px solid var(--mar); color: var(--mar); font-size: var(--t-0); font-weight: 700;
  font-variant-numeric: tabular-nums; margin-top: 1px;
}
.video-titulo { display: block; font-weight: 600; line-height: 1.3; }
.video:hover .video-titulo { color: var(--mar); }
.video-sub { display: block; margin-top: 3px; font-size: var(--t-0); color: var(--morto); line-height: 1.4; }

/* ── Provas modelo ── */
.provas { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr)); gap: 18px; }
.prova {
  display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 20px; align-items: start;
  padding: 18px; border: 1px solid var(--linha); border-radius: 14px; background: var(--papel); box-shadow: var(--sombra-leve);
}
.prova-capa {
  position: relative; display: block; width: 100%; max-width: 100%; aspect-ratio: 560 / 792;
  border-radius: 3px; overflow: hidden; border: 1px solid var(--linha); box-shadow: var(--sombra-leve);
}
.prova-capa img { width: 100%; height: 100%; object-fit: cover; }
.prova-capa .abrir-selo { gap: 6px; padding: 6px 12px; font-size: var(--t-0); }
.prova-capa .abrir-selo .icone { width: 15px; height: 15px; }
.prova-corpo { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; min-width: 0; }
.prova h3 { font-size: var(--t-3); }
.prova-meta { margin-top: -4px; font-size: var(--t-1); color: var(--morto); }
.prova .descarregar { width: 100%; margin-top: 4px; }

/* Secção ainda sem conteúdo */
.vazio {
  display: flex; align-items: center; gap: 20px; padding: 26px 28px;
  border: 1.5px dashed var(--filete); border-radius: 14px;
}
.vazio-icone {
  display: grid; place-items: center; flex: none; width: 56px; height: 56px; border-radius: 14px;
  background: var(--papel); color: var(--morto); box-shadow: var(--sombra-leve);
}
.vazio-icone .icone { width: 28px; height: 28px; stroke-width: 1.6; }
.vazio-titulo { font-weight: 600; }
.vazio-titulo + p { margin-top: 2px; font-size: var(--t-1); color: var(--morto); }

/* ── Quizzes: cartões da secção ── */
.quizzes { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 185px), 1fr)); gap: 14px; }
.quiz-cartao {
  display: flex; flex-direction: column; gap: 10px; padding: 18px;
  border-radius: 14px; background: var(--papel); border: 1px solid var(--linha); box-shadow: var(--sombra-leve);
}
.quiz-cartao h3 { font-size: 1.0625rem; line-height: 1.3; }
.quiz-cartao-meta { font-size: var(--t-0); color: var(--morto); }
.quiz-cartao .botao { margin-top: auto; align-self: flex-start; }
.quiz-cartao.inativo { background: transparent; box-shadow: none; border: 1.5px dashed var(--filete); }
.quiz-cartao.inativo h3 { color: var(--tinta-2); font-weight: 600; }
.quiz-melhor { font-size: var(--t-0); font-weight: 600; color: var(--mata); }

/* ── Notação matemática (quizzes) ── */
.m, .mt, .sis, .mbloco, .leitura { font-family: var(--f-mat); font-weight: 500; }
.m { font-variant-numeric: tabular-nums; white-space: nowrap; }
.m.mp { white-space: normal; }
.mn { white-space: nowrap; }
.m i, .mt i, .sis i { font-style: italic; }
.m sub, .m sup, .mt sub, .mt sup { font-size: 0.72em; line-height: 0; }
.lop { font-style: normal; }
.vet { position: relative; display: inline-block; }
.vet::after {
  content: "→"; position: absolute; left: 55%; top: -0.38em; transform: translateX(-50%);
  font-family: "Fira Math AL", var(--f-mat); font-size: 0.7em; font-style: normal; font-weight: 400; line-height: 1;
}
.mbloco { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 10px 0; max-width: 100%; overflow-x: auto; }
.mseta { color: var(--morto); }
.mok { color: var(--mata); font-weight: 700; }
.mnok { color: var(--alerta); font-weight: 700; }
.mesp { display: inline-block; width: 14px; }
.mt {
  position: relative; display: inline-grid; gap: 2px 12px; padding: 4px 11px; vertical-align: middle;
  text-align: center; line-height: 1.35; font-variant-numeric: tabular-nums;
}
.mt::before, .mt::after { content: ""; position: absolute; top: 0; bottom: 0; width: 6px; border: 1.6px solid currentColor; }
.mt::before { left: 0; border-right: 0; }
.mt::after { right: 0; border-left: 0; }
.mt-barra { width: 1.5px; justify-self: center; background: currentColor; opacity: 0.7; }
.mt .c-a { color: var(--mar); font-weight: 700; }
.mt .c-b { color: var(--alerta); font-weight: 700; }
.mt .c-v { color: var(--mata); font-weight: 700; }
.mt .c-g { color: var(--morto); opacity: 0.6; }
.mt .c-nova { background: var(--realce); border-radius: 3px; }
.m .c-a { color: var(--mar); font-weight: 700; }
.m .c-b { color: var(--alerta); font-weight: 700; }
.mgrupo { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 4px 7px; white-space: nowrap; max-width: 100%; }
/* A chaveta acompanha a altura das equações, como na sebenta */
.sis { position: relative; display: inline-flex; padding-left: 15px; vertical-align: middle; }
.sis-chave { position: absolute; left: 0; top: 2px; width: 10px; height: calc(100% - 4px); }
.sis-chave path { fill: none; stroke: currentColor; stroke-width: 1.4; vector-effect: non-scaling-stroke; }
.sis-eqs { display: flex; flex-direction: column; gap: 2px; padding: 3px 0; }

/* ── Quizzes: janela ── */
.quiz {
  width: min(100vw - 24px, 880px); height: min(100dvh - 24px, 1000px);
  max-width: none; max-height: none; border-radius: 14px; overflow: hidden; flex-direction: column;
}
.quiz[open] { display: flex; }
.quiz-contador { font-size: var(--t-0); color: var(--morto); font-variant-numeric: tabular-nums; white-space: nowrap; }
.quiz-progresso { display: flex; gap: 3px; padding: 10px 16px 0; }
.quiz-progresso:empty { display: none; }
.quiz-progresso span { flex: 1; height: 6px; border-radius: 3px; background: var(--linha); }
.quiz-progresso .atual { background: var(--mar); opacity: 0.45; }
.quiz-progresso .certa { background: var(--mata); }
.quiz-progresso .errada { background: var(--alerta); }
.quiz-corpo { flex: 1; overflow: auto; overscroll-behavior: contain; padding: 22px clamp(16px, 4vw, 36px) 30px; }
.quiz-rodape {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 16px; border-top: 1px solid var(--linha); background: var(--papel);
}
.quiz-dica { font-size: var(--t-0); color: var(--morto); }
.quiz-seccao { margin-bottom: 10px; color: var(--mar); }
.quiz-enunciado { font-size: 1.125rem; line-height: 1.6; }
.quiz-opcoes {
  list-style: none; margin: 20px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 10px;
}
.quiz-opcao {
  display: flex; align-items: center; gap: 14px; width: 100%; height: 100%; min-width: 0;
  padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--linha); background: var(--papel);
  transition: border-color 0.15s, background-color 0.15s;
}
.quiz-opcao:hover:not(:disabled) { border-color: var(--mar); }
.quiz-opcao:disabled { cursor: default; }
.quiz-letra {
  display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid var(--mar); color: var(--mar); font-size: var(--t-0); font-weight: 700;
}
.quiz-texto { min-width: 0; max-width: 100%; overflow-x: auto; line-height: 1.5; }
.quiz-opcao.certa { border-color: var(--mata); background: var(--mata-suave); }
.quiz-opcao.certa .quiz-letra { background: var(--mata); border-color: var(--mata); color: var(--sobre-cor); }
.quiz-opcao.errada { border-color: var(--alerta); background: var(--alerta-suave); }
.quiz-opcao.errada .quiz-letra { background: var(--alerta); border-color: var(--alerta); color: var(--sobre-cor); }
.quiz-opcao.apagada { opacity: 0.55; }
.quiz-retorno { margin-top: 18px; }
.quiz-veredito { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.quiz-veredito .icone { width: 20px; height: 20px; stroke-width: 2.2; }
.quiz-veredito.certo { color: var(--mata); }
.quiz-veredito.errado { color: var(--alerta); }
.quiz-resolucao, .revisao { margin-top: 12px; border: 1px solid var(--linha); border-radius: 12px; background: var(--fundo-2); }
.quiz-resolucao > summary, .revisao > summary {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px; cursor: pointer; list-style: none;
  font-weight: 600; color: var(--mar);
}
.quiz-resolucao > summary::-webkit-details-marker, .revisao > summary::-webkit-details-marker { display: none; }
.quiz-resolucao > summary::before, .revisao > summary::before {
  content: ""; width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(-45deg); transition: transform 0.2s;
}
.quiz-resolucao[open] > summary::before, .revisao[open] > summary::before { transform: rotate(45deg); }
.passos { margin: 0; padding: 2px 20px 16px 42px; display: grid; gap: 12px; line-height: 1.6; }
.passos li::marker { color: var(--mar); font-weight: 700; }
.passos > li, .quiz-opcoes > li { min-width: 0; }

.quiz-inicio { max-width: 580px; margin: 3vh auto 0; display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.quiz-inicio-icone { display: grid; place-items: center; width: 64px; height: 64px; border-radius: 18px; background: var(--realce); color: var(--mar); }
.quiz-inicio-icone .icone { width: 34px; height: 34px; stroke-width: 1.5; }
.quiz-inicio h3 { font-size: var(--t-3); }
.quiz-inicio p { color: var(--tinta-2); }

.resultado-topo { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 34px; }
.resultado-nota { font-size: 1.5rem; font-weight: 600; color: var(--morto); font-variant-numeric: tabular-nums; }
.resultado-nota span { font-size: 4.2rem; font-weight: 700; line-height: 1; color: var(--mar); }
.resultado-nivel { flex: 1 1 260px; display: flex; flex-direction: column; gap: 4px; }
.resultado-nome { font-size: var(--t-3); font-weight: 700; }
.escala { list-style: none; margin: 22px 0 4px; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; }
.escala li { display: flex; flex-direction: column; padding: 8px 4px 0; border-top: 5px solid var(--linha); font-size: var(--t-0); color: var(--morto); line-height: 1.3; }
.escala li.atual { border-top-color: var(--mar); color: var(--tinta); font-weight: 600; }
.escala small { font-weight: 400; font-variant-numeric: tabular-nums; }
.resultado h3 { margin: 28px 0 10px; font-size: 1.0625rem; }
.resultado-seccoes { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--linha); }
.resultado-seccoes li {
  display: grid; grid-template-columns: 22px minmax(0, 1fr) auto auto; align-items: center; gap: 6px 14px;
  padding: 10px 2px; border-bottom: 1px solid var(--linha); font-size: var(--t-1);
}
.sec-marca { display: grid; place-items: center; }
.sec-marca .icone { width: 18px; height: 18px; stroke-width: 2.2; }
.resultado-seccoes li.ok .sec-marca { color: var(--mata); }
.resultado-seccoes li.rever .sec-marca { color: var(--alerta); }
.sec-conta { color: var(--morto); font-variant-numeric: tabular-nums; white-space: nowrap; }
.sec-rever { color: var(--mar); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }
.revisao ol { list-style: none; margin: 0; padding: 4px 14px 14px; display: grid; gap: 12px; }
.revisao li { padding: 14px 16px; border: 1px solid var(--linha); border-radius: 12px; background: var(--papel); }
.rev-cab { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.rev-n {
  display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
  border: 1.5px solid var(--mar); color: var(--mar); font-size: var(--t-0); font-weight: 700; flex: none;
}
.rev-icone { width: 18px; height: 18px; margin-left: auto; stroke-width: 2.2; }
.revisao li.ok .rev-icone { color: var(--mata); }
.revisao li.rever .rev-icone { color: var(--alerta); }
.rev-resposta { margin-top: 8px; font-size: var(--t-1); color: var(--tinta-2); }
.revisao .quiz-enunciado { font-size: var(--t-2); }
@media (max-width: 640px) {
  .quiz { width: 100vw; height: 100dvh; border-radius: 0; }
  .quiz-enunciado { font-size: var(--t-2); }
  .resultado-seccoes li { grid-template-columns: 22px minmax(0, 1fr) auto; }
  .resultado-seccoes .sec-rever { grid-column: 2 / -1; justify-self: start; }
  .passos { padding-left: 34px; padding-right: 14px; }
}
/* Telemóveis muito estreitos: menos margem e fórmulas um pouco menores, para caberem sem deslizar */
@media (max-width: 360px) {
  .quiz-corpo { padding-inline: 12px; }
  .passos { padding-left: 28px; padding-right: 8px; }
  .mbloco { font-size: 0.9em; gap: 6px 10px; }
  .quiz-opcao { padding: 10px; gap: 10px; }
}

/* ── Programa ── */
.temas {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 440px), 1fr)); gap: 18px;
}
.tema {
  display: grid; grid-template-columns: 60px minmax(0, 1fr); gap: 18px;
  position: relative;
  padding: 22px 22px 22px 18px; border: 1px solid var(--linha); border-radius: 12px; background: var(--papel);
  box-shadow: var(--sombra-leve);
}
.tema:has(.menu[open]) { z-index: 4; }
.picto { width: 60px; height: 60px; fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.picto .fino { stroke-width: 1.75; }
.picto .tenue { opacity: 0.5; }
.picto .p-cheio-mar { fill: var(--mar); stroke: none; }
.picto .p-cheio-alerta { fill: var(--alerta); stroke: none; }
.picto .p-cheio-tinta { fill: var(--tinta-2); stroke: none; }
.picto .p-mar { stroke: var(--mar); }
.picto .p-alerta { stroke: var(--alerta); }
.picto .p-tinta { stroke: var(--tinta-2); }
.picto .p-morto { stroke: var(--morto); }
.picto .p-fundo { fill: var(--realce); }
.picto .p-fundo-b { fill: var(--realce-b); }
.picto .p-ponto { fill: var(--mata); }
.tema-corpo { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.tema h3 { font-size: 1.1875rem; }
.tema-resumo { font-size: var(--t-1); color: var(--tinta-2); line-height: 1.5; }
.tema-vazio { margin-top: auto; padding-top: 6px; font-size: var(--t-0); color: var(--morto); }

/* Submenu de materiais: botão sempre no fundo do cartão, painel por cima dos cartões seguintes */
.menu { margin-top: auto; padding-top: 6px; }
.menu > summary { list-style: none; width: fit-content; }
.menu > summary::-webkit-details-marker { display: none; }
.menu-botao { gap: 7px; padding: 7px 12px 7px 14px; font-size: var(--t-0); }
.menu-botao .icone { width: 16px; height: 16px; }
.menu[open] > .menu-botao { background: var(--realce); }
.menu-n {
  display: grid; place-items: center; min-width: 20px; height: 20px; padding: 0 6px; border-radius: 999px;
  background: var(--realce); color: var(--mar); font-size: 0.75rem; font-weight: 700; font-variant-numeric: tabular-nums;
}
.menu[open] .menu-n { background: var(--papel); }
.menu-seta { transition: transform 0.2s; }
.menu[open] .menu-seta { transform: rotate(180deg); }
.menu-painel {
  position: absolute; left: 12px; right: 12px; top: calc(100% - 12px); z-index: 5;
  max-height: min(60vh, 440px); overflow-y: auto; padding: 6px 8px 8px;
  border-radius: 12px; background: var(--papel); border: 1px solid var(--linha); box-shadow: var(--sombra);
}
.menu-grupo {
  display: flex; align-items: center; gap: 8px; padding: 10px 10px 4px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--morto);
}
.menu-grupo .icone { width: 15px; height: 15px; color: var(--mar); }
.menu-painel ul { list-style: none; margin: 0; padding: 0; }
.menu-item {
  display: flex; align-items: baseline; gap: 10px; width: 100%; padding: 7px 10px; border-radius: 8px;
  color: var(--tinta); text-decoration: none; font-size: var(--t-1); line-height: 1.35;
}
.menu-item:hover { background: var(--realce); color: var(--mar); }
.menu-item b { flex: none; min-width: 4.6em; font-size: var(--t-0); font-weight: 700; color: var(--mar); }

.avaliacao { margin-top: clamp(44px, 6vw, 64px); }
.avaliacao h3 { font-size: var(--t-3); margin-bottom: 18px; }
.datas {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); gap: 14px;
}
.data {
  display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 14px; align-items: start;
  padding: 16px; border-radius: 12px; background: var(--papel); border: 1px solid var(--linha); box-shadow: var(--sombra-leve);
}
.data time {
  display: grid; place-items: center; align-content: center; height: 70px;
  border-radius: 10px; background: var(--realce); color: var(--mar); line-height: 1;
}
.data-dia { font-size: 1.65rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.data-mes { margin-top: 5px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }
.data-nome { font-weight: 600; line-height: 1.3; }
.data-quando { font-size: var(--t-0); color: var(--morto); margin-top: 2px; }
.data-falta { margin-top: 8px; font-size: var(--t-0); font-weight: 600; color: var(--mata); }
.data.passada { opacity: 0.6; }
.data.passada .data-falta { color: var(--morto); }

/* ── Rodapé ── */
.rodape { border-top: 1px solid var(--linha); padding-block: 36px 52px; color: var(--morto); font-size: var(--t-1); }
.rodape .contentor { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px 32px; }
.rodape .marca { font-size: 1.0625rem; }
.rodape p { line-height: 1.5; }

/* ── Diálogos ── */
dialog { padding: 0; border: 0; color: var(--tinta); background: var(--papel); box-shadow: 0 30px 80px -20px rgb(0 0 0 / 0.5); }
dialog::backdrop { background: rgb(8 16 22 / 0.74); }

.leitor {
  width: min(100vw - 24px, 1080px); height: min(100dvh - 24px, 1400px);
  max-width: none; max-height: none; border-radius: 14px; overflow: hidden;
  flex-direction: column;
}
.leitor[open] { display: flex; }
.barra {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px;
  padding: 10px 12px; border-bottom: 1px solid var(--linha); background: var(--papel);
}
.barra-titulo { flex: 1 1 160px; min-width: 0; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.barra-grupo { display: flex; align-items: center; gap: 6px; }
.leitor-pagina { display: flex; align-items: center; gap: 6px; font-size: var(--t-1); color: var(--morto); font-variant-numeric: tabular-nums; }
.leitor-pagina input {
  width: 3.6em; padding: 6px 4px; text-align: center; border-radius: 8px;
  border: 1px solid var(--linha); background: var(--fundo); color: var(--tinta);
  font-variant-numeric: tabular-nums;
}
.segmentado { display: inline-flex; padding: 3px; border-radius: 999px; border: 1px solid var(--linha); background: var(--fundo); }
.segmentado button {
  padding: 5px 12px; border-radius: 999px; border: 0; background: none; cursor: pointer;
  font-size: var(--t-0); font-weight: 600; color: var(--morto);
}
.segmentado button[aria-pressed="true"] { background: var(--mar); color: var(--sobre-cor); }
.barra .botao { padding: 7px 14px; }
.folhas {
  position: relative; flex: 1; overflow: auto; overscroll-behavior: contain;
  padding: 16px; background: var(--fundo-2);
}
.folhas:focus { outline: none; }
.folha {
  margin: 0 auto 16px; background: var(--papel); box-shadow: var(--sombra);
  border-radius: 2px; overflow: hidden;
}
.folha canvas { display: block; width: 100%; height: 100%; }
.estado {
  position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 14px;
  padding: 24px; text-align: center; color: var(--morto); background: var(--fundo-2);
}
.leitor-corpo { position: relative; flex: 1; display: flex; flex-direction: column; min-height: 0; }
@media (max-width: 640px) {
  .leitor { width: 100vw; height: 100dvh; border-radius: 0; }
  .barra-titulo { flex-basis: calc(100% - 60px); order: -1; }
  .barra [data-fechar] { order: -1; }
  .folhas { padding: 10px; }
}

.cinema { width: min(100vw - 24px, 1120px); max-width: none; max-height: calc(100dvh - 24px); border-radius: 14px; overflow: auto; }
.cinema video { display: block; width: 100%; aspect-ratio: 16 / 9; background: var(--fundo-video); }
.cinema-rodape { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 16px; padding: 16px 16px 18px; }
.cinema-info h3 { font-size: var(--t-3); color: var(--mar); }
.cinema-info p { margin-top: 2px; color: var(--morto); font-size: var(--t-1); }
@media (max-width: 640px) { .cinema { width: 100vw; border-radius: 0; } }

/* ── Foco e movimento ── */
:is(a, button, input, [tabindex]):focus-visible { outline: 2.5px solid var(--mar); outline-offset: 3px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}