/*
 * Estilo das paginas publicas do blog
 * (docs/specs/identidade-visual-do-blog-publico/PLAN.md e
 * docs/specs/responsividade-do-blog-publico/PLAN.md).
 *
 * UM desenho, DOIS humores. Os tokens escuros valem por padrao; o bloco
 * prefers-color-scheme: light redefine SOMENTE tokens de cor - nenhuma regra
 * de layout, tipografia ou espacamento e duplicada. E o que impede os dois
 * humores de divergirem (SPEC AC-2).
 *
 * Contraste conferido pela formula da WCAG 2.1, por humor (SPEC AC-4/AC-6):
 *
 *   par                     escuro    claro    exigido
 *   texto / fundo           13,25:1   17,06:1    4,5:1
 *   apagado / fundo          6,58:1    6,76:1    4,5:1
 *   texto / superficie      12,26:1   15,35:1    4,5:1
 *   apagado / superficie     6,09:1    6,08:1    4,5:1
 *   foco / fundo            13,25:1   17,06:1      3:1
 *
 * A regua (--color-rule) fica em 1,59:1 (escuro) e 1,48:1 (claro), e isso e
 * deliberado: ela e DECORATIVA. A lista de artigos e uma <ul> de <li>, e a
 * estrutura chega a quem nao a enxerga; a regua so da ritmo. A WCAG 1.4.11
 * pede 3:1 para objeto grafico NECESSARIO ao entendimento, que nao e o caso.
 *
 * Texto branco puro sobre preto puro (21:1) vibra e cansa em leitura longa;
 * por isso o escuro para em #d8d4cd sobre #0b0c0e, e o claro usa osso em vez
 * de branco.
 *
 * Tres vozes, todas de fonte ja instalada - nenhum @font-face, nenhuma
 * requisicao externa (SPEC AC-8): serifada no titulo, sem serifa no corpo,
 * monoespacada no que e rotulo (data, tag, navegacao, rodape, codigo).
 *
 * Uma largura so: a MOLDURA (.container), que para em 60rem, leva cabecalho,
 * capa, texto e rodape. O texto acompanha a capa em toda largura, a pedido do
 * usuario, e a linha passa dos 70 caracteres no desktop
 * (docs/specs/legenda-fixa-e-texto-na-largura-da-capa/SPEC.md R3; antes, uma
 * coluna de 33 corpos de texto, da responsividade PLAN D3).
 *
 * Tamanhos e espacos escalam com a janela por clamp(), sem media query
 * (PLAN D2). Ha duas quebras de largura: a capa de borda a borda no celular
 * (PLAN D6) e o arquivo em miniatura da pagina inicial no desktop
 * (docs/specs/arquivo-em-miniatura-na-pagina-inicial/PLAN.md D4). Blocos largos (pre, table) rolam por dentro: a pagina nunca rola
 * na horizontal, nem a 320px.
 */
:root {
  --color-background: #0b0c0e;
  --color-surface: #14161a;
  --color-text: #d8d4cd;
  --color-muted: #9a958d;
  --color-rule: #31353c;

  --font-serif: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia,
    "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas,
    "Liberation Mono", monospace;

  /* Escala tipografica: de 375px a 1440px, em linha reta (PLAN D2). */
  --text-body: clamp(1rem, 0.9rem + 0.4vw, 1.25rem);
  --text-h1: clamp(1.5rem, 1.25rem + 1.1vw, 2.25rem);
  --text-h2: clamp(1.1875rem, 1.03rem + 0.66vw, 1.625rem);
  --text-h3: clamp(1.0625rem, 0.97rem + 0.38vw, 1.3125rem);
  --text-item: clamp(1.125rem, 1rem + 0.45vw, 1.375rem);
  --text-label: clamp(0.75rem, 0.7rem + 0.19vw, 0.875rem);

  /* Espacos que acompanham a faixa: menores no celular (PLAN D2). */
  --space-page-top: clamp(1.5rem, 1rem + 2vw, 3rem);
  --space-page-bottom: clamp(3rem, 2.25rem + 2.5vw, 5rem);
  --space-section: clamp(1.75rem, 1.4rem + 1.5vw, 3rem);
  --space-item: clamp(1.25rem, 1rem + 1vw, 2.5rem);

  /* Moldura e margem lateral (PLAN D3 e D4). */
  --frame: 60rem;
  --gutter: clamp(0.75rem, 0.1rem + 3.2vw, 3rem);

  color-scheme: dark light;
}

/*
 * Unico ponto de divergencia entre os humores: os valores acima. Os tokens
 * claros aparecem duas vezes, com o MESMO conteudo: pelo sistema, quando o
 * leitor nao escolheu o escuro, e pela escolha "claro" gravada no cookie, que o
 * servidor marca em <html data-theme> (docs/specs/botao-de-tema-claro-e-escuro/
 * PLAN.md D4). Trocar sem script custa essa copia; a guarda de estilo exige os
 * dois blocos identicos.
 */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="escuro"]) {
    --color-background: #faf8f5;
    --color-surface: #f0ece4;
    --color-text: #171614;
    --color-muted: #5c574f;
    --color-rule: #d5cec0;
  }
}

:root[data-theme="claro"] {
  --color-background: #faf8f5;
  --color-surface: #f0ece4;
  --color-text: #171614;
  --color-muted: #5c574f;
  --color-rule: #d5cec0;
}

/* Com escolha, os controles nativos seguem o modo escolhido. */
:root[data-theme="claro"] {
  color-scheme: light;
}

:root[data-theme="escuro"] {
  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.7;
  overflow-wrap: break-word;
}

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

/*
 * A moldura. So o padding lateral: um atalho padding aqui zeraria o
 * padding-block de main, que e a folga entre a regua do cabecalho e a capa
 * (PLAN D5).
 */
.container {
  max-width: calc(var(--frame) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/*
 * O texto ocupa a moldura inteira, como a capa: sem limite proprio de largura
 * (docs/specs/legenda-fixa-e-texto-na-largura-da-capa/SPEC.md R3). Sem grid,
 * para as margens verticais continuarem colapsando como antes.
 */
main > :not(.article),
.article > :not(.article-cover) {
  margin-inline: auto;
}

/*
 * O link nao tem cor propria: herda a tinta e se distingue pelo sublinhado
 * (SPEC AC-9/AC-10).
 */
a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

/*
 * Fora da prosa - titulo, nome do site, navegacao, tags, lista do arquivo -
 * nao ha texto ao redor de que distinguir o link: ali tudo e link, e o
 * sublinhado permanente so faria ruido. Ele volta no hover e no foco.
 */
h1 a,
h2 a,
h3 a,
h4 a,
.site-name,
.site-nav a,
.tags a,
.article-share a,
.archive-list > li > a {
  text-decoration: none;
}

h1 a:hover,
h2 a:hover,
h3 a:hover,
h4 a:hover,
.site-name:hover,
.site-nav a:hover,
.tags a:hover,
.article-share a:hover,
.archive-list > li > a:hover {
  text-decoration: underline;
}

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

main:focus {
  outline: none;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 10;
  padding: 0.5rem 1rem;
  background: var(--color-background);
  border: 1px solid var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--text-label);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--color-rule);
  padding: clamp(0.875rem, 0.7rem + 0.6vw, 1.5rem) 0;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 2rem;
}

.site-name {
  font-family: var(--font-serif);
  font-size: var(--text-item);
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Navegacao e troca de tema ficam juntas, a direita do nome. */
.site-nav {
  margin-inline-start: auto;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 clamp(1rem, 0.6rem + 1.2vw, 1.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Alvo de pelo menos 24 x 24 px, como o de compartilhar (WCAG 2.5.8). */
.site-nav a {
  display: inline-block;
  min-width: 1.5rem;
  min-height: 1.5rem;
  padding-block: 0.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-text);
}

/*
 * Troca de tema (docs/specs/botao-de-tema-claro-e-escuro/PLAN.md D3 e D4).
 * Sem escolha, o servidor manda os dois links e aqui aparece o do outro modo
 * do sistema: no escuro, "Modo claro"; no claro, "Modo escuro". Com escolha,
 * so vem o link certo.
 */
.theme-switch {
  margin: 0;
}

.theme-switch a {
  display: inline-block;
  min-width: 1.5rem;
  min-height: 1.5rem;
  padding-block: 0.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
  text-decoration: none;
}

.theme-switch a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

.theme-switch .theme-to-dark {
  display: none;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-to-light {
    display: none;
  }

  :root:not([data-theme]) .theme-to-dark {
    display: inline-block;
  }
}

:root[data-theme="claro"] .theme-to-dark {
  display: inline-block;
}

/*
 * Botao de movimento (docs/specs/modo-css-livre/PLAN.md D7): so vem com
 * estetica animada. Com o sistema pedindo movimento reduzido nada anda, e o
 * link some. E um botao de play e stop, com fundo proprio, para continuar
 * legivel em cima de uma ilustracao do cabecalho; o nome acessivel e o
 * aria-label, na lingua da pagina.
 */
.motion-switch {
  margin: 0;
}

.motion-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  font-size: 0.75rem;
  line-height: 1;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  text-decoration: none;
}

.motion-switch a:hover {
  border-color: var(--color-text);
}

@media (prefers-reduced-motion: reduce) {
  .motion-switch {
    display: none;
  }
}

/*
 * Troca de lingua (docs/specs/blog-em-varias-linguas/PLAN.md D8): so vem com
 * lingua ligada, com o desenho do botao de tema. A lingua da pagina fica
 * marcada, sem link.
 */
.language-switch ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.language-switch a,
.language-switch span {
  display: inline-block;
  min-width: 1.5rem;
  min-height: 1.5rem;
  padding-block: 0.25rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
  text-decoration: none;
}

.language-switch span {
  color: var(--color-text);
}

.language-switch a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

/*
 * Menu Lingua do modo automatico (docs/specs/traducao-automatica-para-qualquer-lingua/PLAN.md
 * D14): um details sem script com Portugues, English e Automatico. Aberto, a
 * lista entra no fluxo do cabecalho, sob o resumo, e nao por cima do conteudo:
 * a estetica livre recorta o cabecalho (overflow: clip) para conter as camadas,
 * e uma lista posicionada para fora dele sairia cortada, so a borda.
 */
.language-menu details {
  position: relative;
}

.language-menu summary {
  display: inline-block;
  min-height: 1.5rem;
  padding-block: 0.25rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
}

.language-menu summary:hover {
  color: var(--color-text);
}

.language-menu summary:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.language-menu ul {
  margin: 0.25rem 0 0;
  display: grid;
  gap: 0.25rem;
  width: max-content;
  max-width: calc(100vw - 2 * var(--gutter));
  padding: 0.5rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 0.5rem;
}

.language-menu a[aria-current="true"] {
  color: var(--color-text);
  text-decoration: underline;
}

/* Credito da base de IP, exigido pela licenca, discreto como o rodape. */
.geo-credit a {
  color: inherit;
}

/*
 * Linguas da direita para a esquerda (PLAN D14): o que a folha posiciona pela
 * esquerda ou pela direita troca de lado. :dir() segue o atributo dir mais
 * proximo, entao o original em portugues dentro de uma pagina RTL (dir="ltr")
 * fica como sempre.
 */
.skip-link:dir(rtl) {
  left: auto;
  right: var(--gutter);
}

.claim-legend:dir(rtl) {
  right: auto;
  left: var(--gutter);
}

.claim-legend ul:dir(rtl) {
  right: auto;
  left: 0;
}

.article-content th:dir(rtl),
.article-content td:dir(rtl) {
  text-align: right;
}

.article-content blockquote:dir(rtl) {
  padding: 0 1.5rem 0 0;
  border-left: 0;
  border-right: 2px solid var(--color-rule);
}

.article-content .block-notes:dir(rtl) {
  padding-left: 0;
  padding-right: 1.5em;
}

/* Aviso de traducao ausente, acima do texto original (SPEC Q5). */
.translation-notice {
  margin-block: 0 1.5rem;
  padding-inline-start: 0.75rem;
  border-inline-start: 2px solid var(--color-rule);
  font-size: var(--text-label);
  color: var(--color-muted);
}

main {
  padding-block: var(--space-page-top) var(--space-page-bottom);
}

/* Titulo sem palavra sozinha na ultima linha, onde houver o recurso. */
h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: var(--text-h2);
  margin: var(--space-section) 0 0.75rem;
}

h3 {
  font-size: var(--text-h3);
  margin: 2rem 0 0.5rem;
}

/* Data e afins: rotulo, nao prosa. */
.meta {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
  margin: 0 0 0.75rem;
}

.archive-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Ar entre o h1 da pagina e o primeiro titulo da lista. */
.article-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

/*
 * Ritmo da lista: o espaco separa, e a regua apenas confirma. O ultimo item
 * nao leva regua - uma linha antes do rodape seria uma linha a toa.
 */
.article-item {
  padding: var(--space-item) 0;
  border-bottom: 1px solid var(--color-rule);
}

.article-item:first-child {
  padding-top: 0;
}

.article-item:last-child {
  border-bottom: 0;
}

.article-item-title {
  font-size: var(--text-item);
  margin: 0 0 0.5rem;
}

.summary {
  margin: 0;
  color: var(--color-muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-label);
}

.tags a {
  color: var(--color-muted);
  text-decoration: none;
}

.tags a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

/*
 * Compartilhar, no fim do artigo: a mesma voz das tags, separada do conteudo
 * pela regua. So tokens - nenhuma cor de marca, sombra, fundo ou gradiente - e
 * nenhuma largura fixa: a 320px a lista quebra de linha em vez de rolar. Cada
 * alvo tem ao menos 24 x 24 px, mesmo o "X" (WCAG 2.5.8). Embaixo, a mesma
 * folga que o ultimo paragrafo deixava ate o rodape
 * (docs/specs/compartilhamento-do-artigo/PLAN.md D3).
 */
.article-share {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.25rem;
  margin: var(--space-section) 0 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-rule);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
}

.article-share-label {
  margin: 0;
}

.article-share ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-share a {
  display: inline-block;
  min-width: 1.5rem;
  min-height: 1.5rem;
  padding: 0.25rem 0;
  text-align: center;
  color: var(--color-muted);
}

.article-share a:hover {
  color: var(--color-text);
}

/*
 * .archive-year e uma <section> que embrulha o ano, nao um titulo: o h2 dentro
 * dela ja tem o proprio tamanho e a propria margem. Dar tamanho a secao
 * mudaria o corpo da lista inteira por heranca.
 */
.archive-list li {
  padding: 0.25rem 0;
}

.archive-list .meta {
  display: block;
  margin: 0;
}

.article-header {
  margin-bottom: var(--space-section);
}

.article-content > :first-child {
  margin-top: 0;
}

.article-content p,
.article-content ul,
.article-content ol {
  margin: 0 0 1.25rem;
}

/*
 * A nota do uso de IA, quando fecha o artigo: rodape discreto, no tamanho da
 * data e na cor apagada, que ja tem contraste garantido
 * (docs/specs/nota-de-ia-discreta-e-lista-sem-aperto/PLAN.md D2).
 */
.article-content > .ai-note {
  margin-top: var(--space-section);
  font-size: var(--text-label);
  line-height: 1.5;
  color: var(--color-muted);
}

.article-content img {
  max-width: 100%;
  height: auto;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/*
 * A superficie fica no bloco de codigo porque ali ela delimita o bloco - e
 * funcao, nao decoracao. Canto reto, sem sombra (SPEC AC-11).
 */
.article-content pre {
  overflow-x: auto;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  line-height: 1.55;
}

/* Relativo ao corpo, para escalar com ele (PLAN D9). */
.article-content pre code {
  font-size: 0.8em;
}

.article-content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.875em;
}

.article-content th,
.article-content td {
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--color-rule);
  text-align: left;
}

.article-content th {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 400;
  color: var(--color-muted);
}

/* Citacao: regua e recuo. Sem fundo - ela e conteudo, nao aviso. */
.article-content blockquote {
  margin: 1.5rem 0;
  padding: 0 0 0 1.5rem;
  border-left: 2px solid var(--color-rule);
  color: var(--color-muted);
}

.article-content blockquote > :first-child {
  margin-top: 0;
}

.article-content blockquote > :last-child {
  margin-bottom: 0;
}

.article-content hr {
  border: 0;
  border-top: 1px solid var(--color-rule);
  margin: var(--space-section) 0;
}

.site-footer {
  border-top: 1px solid var(--color-rule);
  padding: var(--space-item) 0 var(--space-section);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
}

.site-footer p {
  margin: 0;
}

/* Imagem de cabecalho do artigo: largura da moldura, numa faixa 2:1 com o
   centro da imagem, sem distorcer. O recorte e so de exibicao - o arquivo
   servido continua o gerado, e o editor mostra o mesmo recorte
   (docs/specs/configuracoes-de-ia-e-imagem-de-cabecalho/PLAN.md D10 e D17). */
.article-cover {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  object-position: center;
  margin: 0 0 var(--space-item);
}

/*
 * Anotacoes da camada epistemica (docs/specs/camada-epistemica-do-documento/PLAN.md D18).
 * O fundo vem das variaveis --claim-* que a pagina poe no artigo, a partir
 * das Configuracoes, e so quando a exibicao esta ligada. Cada tipo tem tambem
 * um estilo de sublinhado: a diferenca nao depende so de cor (WCAG 1.4.1), e a
 * legenda mostra a mesma amostra. Nada aqui muda com o humor: as cores foram
 * conferidas contra os dois no servidor.
 */
.claim {
  background: var(--claim-bg, transparent);
  padding: 0 0.1em;
  border-radius: 2px;
  text-decoration-line: underline;
  text-decoration-color: var(--color-muted);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.claim-evidence {
  --claim-bg: var(--claim-evidence);
  text-decoration-style: solid;
}

.claim-inference {
  --claim-bg: var(--claim-inference);
  text-decoration-style: dashed;
}

.claim-hypothesis {
  --claim-bg: var(--claim-hypothesis);
  text-decoration-style: dotted;
}

.claim-observation {
  --claim-bg: var(--claim-observation);
  text-decoration-style: double;
}

/*
 * Legenda: uma aba "Marcacoes" presa no canto inferior direito da tela, que
 * abre o dicionario para cima, sem script
 * (docs/specs/legenda-fixa-e-texto-na-largura-da-capa/SPEC.md R1 e R2). E o
 * unico elemento fixo das paginas publicas: fechada, ocupa um canto pequeno e
 * nao tira largura do texto.
 */
.claim-legend {
  position: fixed;
  right: var(--gutter);
  bottom: var(--gutter);
  z-index: 20;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
}

.claim-legend summary {
  cursor: pointer;
  list-style: none;
  padding: 0.5rem 0.875rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 999px;
}

.claim-legend summary::-webkit-details-marker {
  display: none;
}

/* Seta do estado: para cima fechada (o painel abre acima), para baixo aberta. */
.claim-legend summary::after {
  content: " \25B4";
}

.claim-legend[open] summary::after {
  content: " \25BE";
}

.claim-legend summary:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

/*
 * O dicionario, acima da aba; cabe a 320px e rola por dentro se for alto. O
 * 100vw inclui a barra de rolagem classica dos navegadores de desktop (ate
 * ~20px), que nao e area visivel: a folga de 1.25rem a desconta.
 */
.claim-legend ul {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.5rem);
  width: max-content;
  max-width: calc(100vw - 2 * var(--gutter) - 1.25rem);
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: 0.75rem 1rem;
  display: grid;
  gap: 0.35rem;
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: 0.5rem;
}

/* Folga no fim da pagina, so quando a aba existe: nada fica escondido atras dela. */
body:has(.claim-legend) {
  padding-bottom: calc(var(--gutter) + 3rem);
}

.claim-legend .claim {
  color: var(--color-text);
}

/*
 * Notas: a fonte logo abaixo do bloco que a cita, menor, recuada e em cor
 * discreta (docs/specs/fonte-abaixo-do-trecho-citado/PLAN.md D5). O bloco de
 * cima encosta nela; a URL longa quebra, sem rolagem lateral.
 */
.article-content .block-notes {
  font-size: var(--text-label);
  color: var(--color-muted);
  padding-left: 1.5em;
  margin: 0 0 1.25rem;
}

.article-content > :has(+ .block-notes) {
  margin-bottom: 0.5rem;
}

.article-content .block-notes p {
  margin: 0;
}

.article-content .block-notes li {
  overflow-wrap: anywhere;
}

/*
 * No celular (ate 599px), a capa vai de borda a borda da tela: a margem
 * lateral e devolvida a ela, e a faixa 2:1 continua pelo aspect-ratio
 * (PLAN D6). A outra quebra de largura e a do arquivo em miniatura, abaixo.
 */
@media (max-width: 37.4375rem) {
  .article-cover {
    width: calc(100% + 2 * var(--gutter));
    max-width: none;
    margin-inline: calc(-1 * var(--gutter));
  }
}

/*
 * Arquivo em miniatura da pagina inicial: so no desktop, a direita da lista
 * (docs/specs/arquivo-em-miniatura-na-pagina-inicial/SPEC.md R2). Abaixo de
 * 60rem ela nao aparece, e display: none a tira tambem do leitor de tela e do
 * Tab (R3.3). Rola com a pagina: nada de position aqui.
 */
.archive-mini {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--color-muted);
}

.archive-mini h2 {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--color-text);
  margin: 0 0 0.75rem;
}

.archive-mini h3 {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-muted);
  margin: 1rem 0 0.35rem;
}

.archive-mini ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.archive-mini a {
  color: var(--color-text);
  text-decoration: none;
}

.archive-mini a:hover {
  text-decoration: underline;
}

.archive-mini p {
  margin: 1rem 0 0;
}

@media (min-width: 60rem) {
  .home {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 14rem;
    gap: var(--space-section);
  }

  .archive-mini {
    display: block;
    align-self: start;
  }
}

/* Identidade: tema sobrio. */
:root {
  --color-background: #121212;
  --color-surface: #1b1b1d;
  --color-text: #e4e2de;
  --color-muted: #b0ada7;
  --color-rule: #e5484d;
  --font-serif: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-sans: "Source Serif 4", Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, "Times New Roman", serif;
  --font-mono: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="escuro"]) {
    --color-background: #faf8f5;
    --color-surface: #f0ece4;
    --color-text: #222222;
    --color-muted: #4f4b46;
    --color-rule: #d62828;
  }
}

:root[data-theme="claro"] {
  --color-background: #faf8f5;
  --color-surface: #f0ece4;
  --color-text: #222222;
  --color-muted: #4f4b46;
  --color-rule: #d62828;
}

.site-name,
h1,
h2,
h3,
h4 {
  font-size-adjust: cap-height 0.64;
}

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("/fontes/space-grotesk/space-grotesk-normal-300-700-v22.woff2") format("woff2");
}

@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url("/fontes/source-serif-4/source-serif-4-normal-200-900-v14.woff2") format("woff2");
}

@font-face {
  font-family: "Source Serif 4";
  font-style: italic;
  font-weight: 200 900;
  font-display: swap;
  src: url("/fontes/source-serif-4/source-serif-4-italic-200-900-v14.woff2") format("woff2");
}

/* Estetica livre (docs/specs/modo-css-livre/PLAN.md D1 e D2). */
html {
  overflow-x: clip;
}

:root {
  --ng-svg-catalogo-particulas-page-back-dark: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20240%20240%22%20width%3D%22240%22%20height%3D%22240%22%3E%3Cg%20fill%3D%22%23e5484d%22%3E%3Ccircle%20cx%3D%22117%22%20cy%3D%22192%22%20r%3D%221.2%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2224%22%20cy%3D%22212%22%20r%3D%221.1%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2285%22%20cy%3D%22134%22%20r%3D%221.1%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22160%22%20cy%3D%22168%22%20r%3D%221.1%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2286%22%20cy%3D%2248%22%20r%3D%221.9%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2281%22%20cy%3D%2241%22%20r%3D%221.7%22%20fill-opacity%3D%220.8%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2295%22%20cy%3D%2279%22%20r%3D%221.4%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22180%22%20cy%3D%22214%22%20r%3D%221.9%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2218%22%20cy%3D%22163%22%20r%3D%221.3%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2231%22%20cy%3D%2289%22%20r%3D%221.2%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2254%22%20cy%3D%2236%22%20r%3D%221.5%22%20fill-opacity%3D%220.5%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22107%22%20cy%3D%2241%22%20r%3D%221.5%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2275%22%20cy%3D%22122%22%20r%3D%222.1%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2232%22%20cy%3D%22165%22%20r%3D%221.6%22%20fill-opacity%3D%220.8%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22208%22%20cy%3D%2230%22%20r%3D%222.2%22%20fill-opacity%3D%221%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2271%22%20cy%3D%22183%22%20r%3D%221.3%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22127%22%20cy%3D%22190%22%20r%3D%221.6%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22102%22%20cy%3D%22150%22%20r%3D%222.2%22%20fill-opacity%3D%220.5%22%3E%3C%2Fcircle%3E%3C%2Fg%3E%3C%2Fsvg%3E");
  --ng-svg-catalogo-particulas-page-back-light: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20240%20240%22%20width%3D%22240%22%20height%3D%22240%22%3E%3Cg%20fill%3D%22%23d62828%22%3E%3Ccircle%20cx%3D%22117%22%20cy%3D%22192%22%20r%3D%221.2%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2224%22%20cy%3D%22212%22%20r%3D%221.1%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2285%22%20cy%3D%22134%22%20r%3D%221.1%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22160%22%20cy%3D%22168%22%20r%3D%221.1%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2286%22%20cy%3D%2248%22%20r%3D%221.9%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2281%22%20cy%3D%2241%22%20r%3D%221.7%22%20fill-opacity%3D%220.8%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2295%22%20cy%3D%2279%22%20r%3D%221.4%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22180%22%20cy%3D%22214%22%20r%3D%221.9%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2218%22%20cy%3D%22163%22%20r%3D%221.3%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2231%22%20cy%3D%2289%22%20r%3D%221.2%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2254%22%20cy%3D%2236%22%20r%3D%221.5%22%20fill-opacity%3D%220.5%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22107%22%20cy%3D%2241%22%20r%3D%221.5%22%20fill-opacity%3D%220.9%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2275%22%20cy%3D%22122%22%20r%3D%222.1%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2232%22%20cy%3D%22165%22%20r%3D%221.6%22%20fill-opacity%3D%220.8%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22208%22%20cy%3D%2230%22%20r%3D%222.2%22%20fill-opacity%3D%221%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%2271%22%20cy%3D%22183%22%20r%3D%221.3%22%20fill-opacity%3D%220.6%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22127%22%20cy%3D%22190%22%20r%3D%221.6%22%20fill-opacity%3D%220.7%22%3E%3C%2Fcircle%3E%3Ccircle%20cx%3D%22102%22%20cy%3D%22150%22%20r%3D%222.2%22%20fill-opacity%3D%220.5%22%3E%3C%2Fcircle%3E%3C%2Fg%3E%3C%2Fsvg%3E");
}

body {
  font-size: 1.125rem;
  line-height: 1.7;
}

main {
  max-width: 65ch;
  margin-inline: auto;
}

.article-content {
  max-width: 65ch;
}

.site-header {
  border-bottom-width: 3px;
  border-bottom-style: solid;
  border-bottom-color: var(--color-rule);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-name {
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration-line: underline;
  text-decoration-color: var(--color-rule);
}

.article-item {
  border-bottom-width: 1px;
  border-bottom-style: solid;
  border-bottom-color: var(--color-rule);
}

body {
  isolation: isolate;
}

.site-header {
  position: relative;
  isolation: isolate;
  overflow: clip;
}

main {
  background-color: var(--color-background) !important;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

@media not all and (prefers-color-scheme: light) {
  :root:not([data-theme="claro"]) body::before {
    inset: 0 0 -240px 0;
    background-image: var(--ng-svg-catalogo-particulas-page-back-dark);
    background-size: 240px 240px;
    opacity: calc(0.3 * var(--ng-opacity-scale, 1));
  }
}

:root[data-theme="escuro"] body::before {
  inset: 0 0 -240px 0;
  background-image: var(--ng-svg-catalogo-particulas-page-back-dark);
  background-size: 240px 240px;
  opacity: calc(0.3 * var(--ng-opacity-scale, 1));
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="escuro"]) body::before {
    inset: 0 0 -240px 0;
    background-image: var(--ng-svg-catalogo-particulas-page-back-light);
    background-size: 240px 240px;
    opacity: calc(0.3 * var(--ng-opacity-scale, 1));
  }
}

:root[data-theme="claro"] body::before {
  inset: 0 0 -240px 0;
  background-image: var(--ng-svg-catalogo-particulas-page-back-light);
  background-size: 240px 240px;
  opacity: calc(0.3 * var(--ng-opacity-scale, 1));
}

.site-header::before {
  background-image: url("/imagens/identidade/edb393c0-38a2-43c4-ada6-b8475ddce440");
  background-position: 23% center;
  opacity: calc(0.018 * var(--ng-opacity-scale, 1));
}

@media not all and (prefers-color-scheme: light) {
  :root:not([data-theme="claro"]) .site-header::after {
    background-image: radial-gradient(circle at 4% 95%, #8a8f99, transparent 45%), radial-gradient(circle at 9% 70%, #8a8f99, transparent 40%);
    opacity: calc(0 * var(--ng-opacity-scale, 1));
  }
}

:root[data-theme="escuro"] .site-header::after {
  background-image: radial-gradient(circle at 4% 95%, #8a8f99, transparent 45%), radial-gradient(circle at 9% 70%, #8a8f99, transparent 40%);
  opacity: calc(0 * var(--ng-opacity-scale, 1));
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="escuro"]) .site-header::after {
    background-image: radial-gradient(circle at 4% 95%, #6b7280, transparent 45%), radial-gradient(circle at 9% 70%, #6b7280, transparent 40%);
    opacity: calc(0 * var(--ng-opacity-scale, 1));
  }
}

:root[data-theme="claro"] .site-header::after {
  background-image: radial-gradient(circle at 4% 95%, #6b7280, transparent 45%), radial-gradient(circle at 9% 70%, #6b7280, transparent 40%);
  opacity: calc(0 * var(--ng-opacity-scale, 1));
}

.site-header::before {
  background-size: contain !important;
  background-repeat: no-repeat !important;
}

.site-header::before {
  --ng-opacity-scale: 37.2222;
}

@media (prefers-contrast: more) {
  .site-header::before {
    --ng-opacity-scale: 0.5556;
  }
}

.site-header::before {
  background-position-x: 23% !important;
}

@keyframes ng-fumaca-sobe {
  0% { transform: translatey(8%); opacity: calc(0 * var(--ng-opacity-scale, 1)); }
  35% { transform: translatey(0%); opacity: calc(0 * var(--ng-opacity-scale, 1)); }
  100% { transform: translatey(-14%); opacity: calc(0 * var(--ng-opacity-scale, 1)); }
}

@keyframes ng-catalogo-particulas-page-back {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-240px); }
}

@media (prefers-reduced-motion: no-preference) {

  @media not all and (prefers-color-scheme: light) {
    :root:not([data-motion="parado"]):not([data-theme="claro"]) body::before {
      animation: ng-catalogo-particulas-page-back 24s linear 0s infinite normal;
    }
  }

  :root:not([data-motion="parado"])[data-theme="escuro"] body::before {
    animation: ng-catalogo-particulas-page-back 24s linear 0s infinite normal;
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-motion="parado"]):not([data-theme="escuro"]) body::before {
      animation: ng-catalogo-particulas-page-back 24s linear 0s infinite normal;
    }
  }

  :root:not([data-motion="parado"])[data-theme="claro"] body::before {
    animation: ng-catalogo-particulas-page-back 24s linear 0s infinite normal;
  }

  @media not all and (prefers-color-scheme: light) {
    :root:not([data-motion="parado"]):not([data-theme="claro"]) .site-header::after {
      animation: ng-fumaca-sobe 9s ease-out 0s infinite normal;
    }
  }

  :root:not([data-motion="parado"])[data-theme="escuro"] .site-header::after {
    animation: ng-fumaca-sobe 9s ease-out 0s infinite normal;
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-motion="parado"]):not([data-theme="escuro"]) .site-header::after {
      animation: ng-fumaca-sobe 9s ease-out 0s infinite normal;
    }
  }

  :root:not([data-motion="parado"])[data-theme="claro"] .site-header::after {
    animation: ng-fumaca-sobe 9s ease-out 0s infinite normal;
  }
}