/* Flerdaletu — folha de estilos comum */
:root {
  --bg: #eeece6;
  --bg-alt: #dedbd2;
  --bg-dark: #1b2430;
  --ink: #1a1a18;
  --ink-soft: #6d6a62;
  --ink-on-dark: #eeece6;
  --accent: #2a4f78;
  --accent-2: #9a6a1c;
  --accent-on-dark: #9dbbdc;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, 'Times New Roman', serif;
  --gap: 24px;
  --edge: clamp(16px, 4vw, 56px);
  --space-lg: 120px;
  --space-sm: 56px;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: clip;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 800;
  color: inherit;
  margin: 0;
}
h2 { font-size: clamp(1.75rem, 3.4vw, 2.75rem); line-height: 1.05; letter-spacing: -0.02em; margin-bottom: 28px; }
h3 { font-size: 1.2rem; line-height: 1.25; letter-spacing: -0.01em; margin: 36px 0 10px; }
p { margin: 0 0 1.1em; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #fff; padding: 8px 14px; z-index: 10;
}
.skip:focus { left: 8px; top: 8px; }

/* ---------- Grelha ---------- */
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 var(--edge); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }

.span-5-l { grid-column: 1 / 6; }
.span-7-l { grid-column: 1 / 8; }
.span-7-r { grid-column: 6 / 13; }
.span-9-l { grid-column: 1 / 10; }
.span-9-r { grid-column: 4 / 13; }
.span-6-mid { grid-column: 4 / 10; }

/* ---------- Ritmo de secções ---------- */
.band { padding: var(--space-lg) 0; }
.band.tight { padding: var(--space-sm) 0; }
.band.alt { background: var(--bg-alt); }
.band.dark { background: var(--bg-dark); color: var(--ink-on-dark); }
.band.dark a { color: var(--accent-on-dark); }

.num {
  display: block;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  margin-bottom: 14px;
}
.band.dark .num { color: #d2a05a; }

.muted, figcaption { color: var(--ink-soft); }

/* ---------- Separadores ---------- */
.rule { border: 0; height: 3px; background: var(--accent); width: calc((100% - 11 * var(--gap)) / 3 + 3 * var(--gap)); margin: 0; }
.rule-wrap { padding: 0 0; }
.rule.center { margin-left: auto; margin-right: auto; }
.rule.right { margin-left: auto; }

/* ---------- Cabeçalho ---------- */
.site-head { border-bottom: 1px solid var(--bg-alt); }
.site-head .wrap {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 12px 32px; padding-top: 22px; padding-bottom: 22px;
}
.brand {
  font-family: var(--sans); font-weight: 900; font-size: 1.35rem; letter-spacing: -0.03em;
  color: var(--ink); text-decoration: none;
}
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 22px; }
.nav a {
  font-family: var(--sans); font-size: 0.95rem; font-weight: 600; color: var(--ink);
  text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero { padding: 88px 0 var(--space-sm); }
.hero-title { grid-column: 1 / 13; border-left: 3px solid var(--accent); padding-left: clamp(16px, 3vw, 36px); }
.hero h1 {
  font-size: clamp(2.5rem, 7.2vw, 6.6rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 900;
  padding: 6px 0 8px;
}
.hero h1 span { display: block; }
.hero h1 .step-2 { padding-left: calc(100% / 12); }
.hero h1 .step-3 { padding-left: calc(200% / 12); }
.hero-intro { grid-column: 2 / 7; margin-top: 44px; font-size: 1.1rem; }
.topics {
  grid-column: 2 / 12; list-style: none; margin: 8px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 4px 0;
  font-family: var(--sans); font-size: 0.9rem; font-weight: 600; color: var(--ink-soft);
}
.topics li:not(:last-child)::after { content: "/"; color: var(--accent-2); margin: 0 12px; font-weight: 400; }

/* ---------- Imagem principal ---------- */
.lead-figure { padding: 16px 0 var(--space-lg); }
.lead-figure figure {
  grid-column: 5 / 13;
  margin: 0 calc(-1 * var(--edge)) 0 0;
  display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: end;
}
.lead-figure figcaption {
  writing-mode: vertical-rl; transform: rotate(180deg);
  font-family: var(--sans); font-size: 0.78rem; letter-spacing: 0.04em; line-height: 1.4;
  max-height: 100%;
}
.lead-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

/* ---------- Índice ---------- */
.index-list { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: var(--gap); }
.index-list li { break-inside: avoid; padding: 8px 0; border-top: 1px solid rgba(26,26,24,0.15); font-family: var(--sans); font-weight: 600; }
.index-list .n { color: var(--accent-2); font-size: 0.85rem; margin-right: 12px; }
.index-list a { color: var(--ink); text-decoration: none; }
.index-list a:hover { color: var(--accent); text-decoration: underline; }

/* ---------- Listas numeradas ---------- */
.steps { list-style: none; counter-reset: s; margin: 32px 0 0; padding: 0; }
.steps li {
  counter-increment: s; position: relative;
  padding: 16px 0 16px 76px; border-top: 1px solid rgba(26,26,24,0.15);
}
.steps li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 8px;
  font-family: var(--sans); font-weight: 900; font-size: 2.3rem; line-height: 1;
  letter-spacing: -0.04em; color: var(--accent);
}
.steps strong { font-family: var(--sans); }
.band.dark .steps li { border-top-color: rgba(238,236,230,0.2); }
.band.dark .steps li::before { color: var(--accent-on-dark); }

.plain { padding-left: 1.1em; }
.plain li { margin-bottom: 8px; }
.plain li::marker { color: var(--accent); }

/* ---------- Tabela ---------- */
.table-scroll { overflow-x: auto; margin: 28px 0 8px; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 0.98rem; }
th, td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid rgba(26,26,24,0.18); }
thead th { font-family: var(--sans); font-size: 0.85rem; letter-spacing: 0.04em; border-bottom: 3px solid var(--accent); }
tbody th { font-family: var(--sans); }

/* ---------- Secção escura com imagem ---------- */
.detail-figure { grid-column: 1 / 6; margin: 0; }
.detail-figure img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.detail-figure figcaption { color: #b8b5ad; font-family: var(--sans); font-size: 0.8rem; margin-top: 10px; }
.detail-text { grid-column: 7 / 13; }
.band.dark .muted { color: #b8b5ad; }

/* ---------- Glossário ---------- */
.gloss { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr); gap: 0 var(--gap); margin: 24px 0 0; }
.gloss dt { font-family: var(--sans); font-weight: 800; padding: 12px 0; border-top: 1px solid rgba(26,26,24,0.15); }
.gloss dd { margin: 0; padding: 12px 0; border-top: 1px solid rgba(26,26,24,0.15); }

/* ---------- Páginas interiores ---------- */
.page-head { padding: 88px 0 var(--space-sm); }
.page-head .hero-title { grid-column: 1 / 10; }
.page-head h1 { font-size: clamp(2.3rem, 5.6vw, 4.8rem); line-height: 0.98; letter-spacing: -0.04em; font-weight: 900; padding: 4px 0 6px; }
.page-head h1 .step-2 { display: block; padding-left: calc(100% / 9); }
.lede { grid-column: 1 / 10; font-size: 22px; line-height: 1.6; margin-top: 40px; }
.lede p { margin: 0; }

.block { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); padding: 36px 0; border-top: 1px solid rgba(26,26,24,0.15); }
.block:first-child { border-top: 0; padding-top: 0; }
.block h2 { grid-column: 1 / 4; font-size: 1.3rem; line-height: 1.2; letter-spacing: -0.01em; margin: 4px 0 12px; }
.block .body { grid-column: 4 / 10; }
.updated { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-soft); }

/* ---------- Rodapé ---------- */
.site-foot { border-top: 6px solid var(--accent); padding: 56px 0 40px; background: var(--bg); }
.foot-name {
  font-family: var(--sans); font-weight: 900; letter-spacing: -0.05em; line-height: 0.9;
  font-size: clamp(3rem, 15vw, 13rem); margin: 0 0 40px; color: var(--ink);
}
.foot-cols { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); }
.foot-nav { grid-column: 1 / 6; }
.foot-nav ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: var(--gap); }
.foot-nav li { padding: 4px 0; }
.foot-nav a { font-family: var(--sans); font-weight: 600; font-size: 0.95rem; color: var(--ink); text-decoration: none; }
.foot-nav a:hover { color: var(--accent); text-decoration: underline; }
.foot-info { grid-column: 7 / 13; font-size: 0.98rem; }
.foot-label { font-family: var(--sans); font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-2); display: block; margin-bottom: 6px; }
.foot-mail { font-family: var(--sans); font-weight: 700; font-size: 1.15rem; word-break: break-word; }
.foot-small { font-family: var(--sans); font-size: 0.8rem; color: var(--ink-soft); margin-top: 40px; }

/* ---------- Tablet ---------- */
@media (max-width: 1000px) {
  .span-5-l, .span-7-l { grid-column: 1 / 10; }
  .span-7-r, .span-9-r { grid-column: 3 / 13; }
  .span-9-l { grid-column: 1 / 12; }
  .span-6-mid { grid-column: 2 / 12; }
  .hero-intro { grid-column: 2 / 10; }
  .lead-figure figure { grid-column: 3 / 13; }
  .detail-figure { grid-column: 1 / 6; }
  .detail-text { grid-column: 6 / 13; }
  .block .body { grid-column: 4 / 13; }
  .foot-nav { grid-column: 1 / 7; }
  .foot-info { grid-column: 7 / 13; }
}

/* ---------- Mobile ---------- */
@media (max-width: 720px) {
  :root { --space-lg: 64px; --space-sm: 40px; }
  body { font-size: 17px; }
  .grid, .block, .foot-cols { display: block; }
  .hero { padding-top: 48px; }
  .page-head { padding-top: 48px; }
  .hero h1 .step-2 { padding-left: 0.6em; }
  .hero h1 .step-3 { padding-left: 1.2em; }
  .page-head h1 .step-2 { padding-left: 0.6em; }
  .hero-intro { margin-top: 28px; }
  .topics { margin-top: 12px; }
  .lead-figure figure { margin-right: calc(-1 * var(--edge)); grid-template-columns: 1fr; }
  .lead-figure figcaption { writing-mode: horizontal-tb; transform: none; order: 2; padding-right: var(--edge); }
  .index-list { columns: 1; }
  .detail-figure { max-width: 380px; margin-bottom: 36px; }
  .rule { width: 60%; }
  .lede { font-size: 19px; }
  .block h2 { margin-bottom: 8px; }
  .gloss { grid-template-columns: 1fr; }
  .gloss dd { border-top: 0; padding-top: 0; }
  .steps li { padding-left: 58px; }
  .steps li::before { font-size: 1.8rem; }
  .foot-info { margin-top: 32px; }
}
caption { text-align: left; caption-side: bottom; padding-top: 10px; font-size: 0.85rem; }