/* Stibintera — folha de estilos comum */

:root {
  --bg: #f1f2f0;
  --bg-alt: #e3e5e2;
  --bg-dark: #141614;
  --ink: #171917;
  --ink-soft: #6a6e6a;
  --ink-inv: #f1f2f0;
  --accent: #2a6b3c;
  --accent-2: #8a6a20;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --gap: 28px;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: hidden;
}

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

a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration: none; }

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

/* --- grelha de 12 colunas --- */

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gap);
}

/* --- tipografia --- */

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  color: var(--ink);
  margin: 0;
}

h1 {
  font-size: clamp(2.25rem, 5.4vw, 3.9rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}

h2 {
  font-size: clamp(1.45rem, 2.7vw, 1.95rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.15rem;
  line-height: 1.25;
  margin-bottom: 8px;
}

p { margin: 0 0 20px; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.14rem;
  line-height: 1.7;
}

.caption {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
}

.num {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--accent-2);
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 10px;
}

/* --- barras de cor / separadores --- */

.bar {
  height: 3px;
  background: var(--accent);
  border: 0;
  margin: 0 0 22px;
}

.bar-2 { background: var(--accent-2); }
.bar-w2 { width: 16.6%; }
.bar-w3 { width: 25%; }
.bar-w4 { width: 33.3%; }
.bar-w5 { width: 42%; }
.bar-right { margin-left: auto; }

/* --- cabeçalho e navegação --- */

.site-head {
  padding: 26px 0 22px;
  border-bottom: 1px solid #d5d8d4;
}

.head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 28px;
}

.brand {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover { border-bottom-color: var(--accent); }
.site-nav a[aria-current='page'] { border-bottom-color: var(--accent); }

/* --- hero --- */

.hero { padding: 96px 0 0; }

.hero-title { grid-column: 1 / span 7; }

.hero-void {
  grid-column: 9 / span 4;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

.hero-mark {
  width: 10px;
  height: 2.1em;
  background: var(--accent-2);
  margin-top: 0.35em;
}

.hero-intro {
  grid-column: 1 / span 5;
  margin-top: 40px;
}

.hero-intro .bar { width: 60px; }

/* --- imagem principal --- */

.figure-main {
  margin: 112px 0 0;
  grid-column: 1 / span 12;
}

.figure-main .frame {
  width: calc(66.6% + var(--gap) * 2);
  margin-left: calc(-1 * (8.33% + var(--gap) * 0.5));
}

.figure-main figcaption {
  width: calc(66.6% + var(--gap) * 2);
  margin-left: calc(-1 * (8.33% + var(--gap) * 0.5));
  margin-top: 14px;
  text-align: right;
}

/* --- ritmo de secções --- */

.band { padding: 112px 0; }
.band-alt { background: var(--bg-alt); }
.band-tight { padding: 64px 0 112px; }

.block { margin-bottom: 64px; }
.block:last-child { margin-bottom: 0; }

.col-6 { grid-column: 1 / span 6; }
.col-6r { grid-column: 6 / span 7; }
.col-7 { grid-column: 1 / span 7; }
.col-5r { grid-column: 8 / span 5; }
.col-5 { grid-column: 1 / span 5; }
.col-8 { grid-column: 2 / span 8; }
.col-full { grid-column: 1 / span 12; }

/* --- listas --- */

ul.plain, ol.plain { margin: 0 0 20px; padding-left: 0; list-style: none; }

ul.plain li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
}

ul.plain li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 12px;
  height: 2px;
  background: var(--accent);
}

ol.plain { counter-reset: step; }

ol.plain li {
  position: relative;
  padding-left: 34px;
  margin-bottom: 14px;
  counter-increment: step;
}

ol.plain li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--accent-2);
  line-height: 2.2;
}

.list-title { font-weight: 600; }

/* --- secção contrastante --- */

.band-dark {
  background: var(--bg-dark);
  color: var(--ink-inv);
  padding: 112px 0;
}

.band-dark h2, .band-dark h3 { color: var(--ink-inv); }
.band-dark .caption { color: #9ba09b; }
.band-dark a { color: #8fc39d; }
.band-dark ul.plain li::before { background: #8fc39d; }

.figure-detail { grid-column: 2 / span 4; margin: 0; }
.figure-detail figcaption { margin-top: 12px; }
.detail-text { grid-column: 7 / span 6; }

/* --- About --- */

.about-body { grid-column: 3 / span 6; }

.about-marks {
  grid-column: 1 / span 2;
  display: flex;
  flex-direction: column;
  gap: 190px;
  padding-top: 12px;
}

.about-marks span {
  display: block;
  width: 46px;
  height: 3px;
  background: var(--accent);
}

.about-marks span:nth-child(2) { background: var(--accent-2); width: 30px; }
.about-marks span:nth-child(3) { width: 58px; }

/* --- páginas de texto --- */

.page-head { padding: 72px 0 0; }
.page-head h1 { grid-column: 1 / span 8; }

.page-head .page-intro {
  grid-column: 1 / span 6;
  margin-top: 28px;
}

.prose { grid-column: 1 / span 7; }
.prose h2 { margin: 56px 0 16px; }
.prose h2:first-of-type { margin-top: 0; }
.prose h3 { margin: 30px 0 6px; }

.contact-line {
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.5;
}

/* --- rodapé --- */

.site-foot {
  background: var(--bg-alt);
  padding: 72px 0 56px;
  margin-top: 0;
}

.foot-bar {
  height: 6px;
  width: 33.3%;
  background: var(--accent);
  margin-bottom: 40px;
}

.foot-grid { align-items: start; row-gap: 26px; }

.foot-main { grid-column: 1 / span 7; }

.foot-name {
  font-family: var(--serif);
  font-size: 1.9rem;
  line-height: 1.1;
  margin: 0 0 18px;
}

.foot-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin: 0 0 16px;
  padding: 0;
}

.foot-nav a { color: var(--ink); text-decoration: none; font-size: 15px; border-bottom: 1px solid #c3c7c2; }
.foot-nav a:hover { border-bottom-color: var(--accent); }

.foot-side { grid-column: 9 / span 4; }
.foot-side a { font-size: 15px; }

.foot-note { margin-top: 30px; }

/* --- tablet --- */

@media (max-width: 900px) {
  .wrap { padding: 0 24px; }

  .hero { padding: 64px 0 0; }
  .hero-title, .hero-intro { grid-column: 1 / span 9; }
  .hero-void { grid-column: 11 / span 2; }

  .figure-main { margin-top: 64px; }
  .figure-main .frame,
  .figure-main figcaption { width: 100%; margin-left: 0; }
  .figure-main figcaption { text-align: left; }

  .band, .band-dark { padding: 64px 0; }
  .band-tight { padding: 40px 0 64px; }
  .block { margin-bottom: 40px; }

  .col-6, .col-6r, .col-7, .col-5, .col-5r, .col-8,
  .prose, .page-head h1, .page-head .page-intro { grid-column: 1 / span 12; }

  .figure-detail { grid-column: 1 / span 6; }
  .detail-text { grid-column: 8 / span 5; }

  .about-marks { display: none; }
  .about-body { grid-column: 1 / span 12; }

  .foot-main, .foot-side { grid-column: 1 / span 12; }
  .foot-bar { width: 50%; }
}

/* --- mobile --- */

@media (max-width: 620px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }

  .head-inner { flex-direction: column; align-items: flex-start; }
  .site-nav ul { gap: 6px 18px; }

  .hero-void { display: none; }
  .hero-intro { margin-top: 28px; }

  .figure-detail, .detail-text { grid-column: 1 / span 12; }
  .detail-text { margin-top: 32px; }

  .bar-w2 { width: 28%; }
  .bar-w3 { width: 38%; }
  .bar-w4 { width: 46%; }
  .bar-w5 { width: 56%; }

  .foot-bar { width: 62%; }
  .foot-name { font-size: 1.55rem; }
}