/* ==========================================================================
   Blog da IBA: folha de estilo única do blog.
   Mesma pele dos jogos: fundo branco, superfície clara, borda fina de 1px, sombra
   discreta, azul de marca e laranja só em botão. Archivo nos títulos, Inter no corpo.
   Sem JS, sem fonte de terceiro, sem emoji.
   ========================================================================== */

@font-face {
  font-family: 'Archivo';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('assets/fonts/archivo-latin-wght-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('assets/fonts/inter-latin-wght-normal.woff2') format('woff2');
}

:root {
  --color-surface-page: #ffffff;
  --color-surface: #f7f9fc;
  --color-surface-alt: #eef2f8;

  --color-ink: #101828;
  --color-ink-muted: #4a5568;
  --color-ink-soft: #5b6472;

  --color-brand: #185cb6;
  --color-brand-dark: #124c97;
  --color-brand-soft: #f2f6fc;
  --color-brand-soft-alt: #e8f0fb;

  --color-accent: #ffbd59;
  --color-accent-dark: #f0a62a;

  --color-border: #e4e7ec;
  --color-border-strong: #7c8798;
  --shadow-soft: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.1);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --medida: 68ch;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--color-surface-page);
  color: var(--color-ink);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Archivo', 'Inter', system-ui, sans-serif;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 2.7rem); }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.7rem); margin-top: 2em; }
h3 { font-size: 1.15rem; margin-top: 1.6em; }

p { margin: 0 0 1.1em; }

a { color: var(--color-brand-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-brand); }

strong { font-weight: 650; }

code {
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 0.12em 0.36em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--color-brand);
  color: #fff;
  z-index: 10;
}

.skip-link:focus { left: 8px; top: 8px; }

.container {
  width: min(100% - 40px, 1080px);
  margin-inline: auto;
}

/* ---------- cabeçalho ---------- */
.header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-page);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Archivo', 'Inter', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-ink);
  text-decoration: none;
}

.marca img { height: 22px; width: auto; }

.nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.95rem;
}

.nav nav a {
  color: var(--color-ink-muted);
  text-decoration: none;
  font-weight: 600;
}

.nav nav a:hover,
.nav nav a[aria-current='page'] { color: var(--color-brand-dark); }

/* ---------- abertura ---------- */
.abertura {
  padding: 56px 0 8px;
  max-width: 62ch;
}

.abertura .selo {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-brand-soft-alt);
  color: var(--color-brand-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.abertura p { color: var(--color-ink-muted); font-size: 1.12rem; }

/* ---------- lista de artigos ---------- */
.lista {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.lista li { display: flex; }

/* Um artigo só: o cartão não fica perdido na metade de uma grade de duas colunas. */
.lista:has(> li:only-child) { grid-template-columns: minmax(0, 620px); }

.cartao {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-page);
  box-shadow: var(--shadow-soft);
  color: inherit;
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.cartao:hover { border-color: var(--color-border-strong); box-shadow: 0 4px 10px rgba(16, 24, 40, 0.08); }
.cartao:focus-visible { outline: 3px solid var(--color-brand); outline-offset: 2px; }

.cartao img { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--color-border); }

/* Cartão sem capa de jogo: bloco da mesma proporção dos outros, com a marca no lugar da arte. */
.cartao-capa-marca {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-brand-soft-alt);
}

.cartao-capa-marca img {
  width: auto;
  height: 34px;
  border: 0;
}

.cartao-corpo { display: flex; flex-direction: column; gap: 8px; padding: 18px 20px 22px; flex: 1; }

.cartao-data {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.cartao-corpo strong { font-family: 'Archivo', 'Inter', sans-serif; font-size: 1.2rem; font-weight: 800; line-height: 1.25; }

.cartao-corpo span { color: var(--color-ink-muted); font-size: 0.97rem; }

.cartao-ler {
  margin-top: auto;
  padding-top: 4px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-brand-dark);
}

/* ---------- artigo ---------- */
.artigo { padding: 44px 0 8px; }

.artigo-cabeca { max-width: var(--medida); }

.artigo-data {
  color: var(--color-ink-muted);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.prosa { max-width: var(--medida); padding-bottom: 24px; }

.prosa > p:first-of-type { font-size: 1.15rem; color: var(--color-ink-muted); }

.prosa h2 { padding-top: 8px; }

.prosa ul,
.prosa ol { padding-left: 1.25rem; margin: 0 0 1.2em; }

.prosa li { margin-bottom: 0.4em; }

.prosa blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--color-brand);
  color: var(--color-ink-muted);
  font-size: 1.05rem;
}

.prosa figure { margin: 0 0 1.4em; }

.prosa figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.prosa hr { border: 0; border-top: 1px solid var(--color-border); margin: 2.4em 0; }

/* caixa de exemplo: mostra o tabuleiro ou a conta em texto, sem imagem */
.exemplo {
  margin: 1.6em 0;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-ink);
  overflow-x: auto;
}

.exemplo-rotulo {
  display: block;
  margin-bottom: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

/* ---------- chamada para o jogo ---------- */
.jogar {
  margin: 8px 0 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-page);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  max-width: var(--medida);
}

.jogar p { margin: 0; color: var(--color-ink-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--color-brand);
  border-radius: var(--radius-md);
  background: var(--color-brand);
  color: #ffffff;
  font-weight: 650;
  text-decoration: none;
  touch-action: manipulation;
}

.btn:hover { background: var(--color-brand-dark); color: #ffffff; }
.btn:focus-visible { outline: 3px solid var(--color-brand-dark); outline-offset: 2px; }

.btn-acao {
  background: var(--color-accent);
  border-color: var(--color-accent-dark);
  color: #101828;
}

.btn-acao:hover { background: var(--color-accent-dark); color: #101828; }

/* ---------- rodapé ---------- */
.footer {
  margin-top: 64px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-conteudo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 26px 0 34px;
  font-size: 0.92rem;
  color: var(--color-ink-muted);
}

.footer-conteudo p { margin: 0; }

.footer-logo { height: 18px; width: auto; display: block; opacity: 0.9; }

@media (max-width: 760px) {
  .lista { grid-template-columns: minmax(0, 1fr); }
  .abertura { padding-top: 36px; }
  .jogar { align-items: flex-start; }
}