/* ============================================================
   GEODOSSEL — Design System
   Cartografia da estrutura vegetacional do Cerrado
   ============================================================ */

/* ---- Tokens --------------------------------------------- */
:root {
  /* Paleta — Cerrado */
  --espresso:   #0A1F1A;   /* dossel noturno — bg principal */
  --pergaminho: #F4F1E8;   /* papel de carta científica */
  --cerradao:   #1A3D2E;   /* dossel fechado */
  --cerrado:    #7BA05B;   /* cerrado típico */
  --capim:      #D4A574;   /* capim seco / savana */
  --laterita:   #C73E1D;   /* solo vermelho de MT */
  --areia:      #E8DDC4;   /* neutro claro */
  --bruma:      #8B9D87;   /* verde acinzentado / dado secundário */
  --linha:      rgba(244, 241, 232, 0.12);
  --linha-dark: rgba(10, 31, 26, 0.12);

  /* Tipo */
  --display: 'Fraunces', 'Playfair Display', Georgia, serif;
  --body:    'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  --mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  /* Escala */
  --container: 1320px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --rail: 56px;
}

/* ---- Reset --------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--espresso);
  color: var(--pergaminho);
  font-family: var(--body);
  font-weight: 400;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

::selection { background: var(--cerrado); color: var(--espresso); }

/* Modo claro p/ páginas internas (pergaminho) */
body.pergaminho {
  background: var(--pergaminho);
  color: var(--espresso);
}
body.pergaminho ::selection { background: var(--cerradao); color: var(--pergaminho); }


/* ============================================================
   RAIL — assinatura: faixa estratigráfica vertical
   ============================================================ */
.rail {
  position: fixed;
  top: 0; left: 0;
  width: var(--rail);
  height: 100vh;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--cerradao) 12%, var(--cerradao) 38%,
    var(--cerrado)  38%, var(--cerrado)  72%,
    var(--capim)    72%, var(--capim)    100%
  );
  pointer-events: none;
}

.rail::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(100% / 24 - 1px),
      rgba(10, 31, 26, 0.35) calc(100% / 24 - 1px),
      rgba(10, 31, 26, 0.35) calc(100% / 24)
    );
}

.rail-glyph {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--pergaminho);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
  position: relative;
  z-index: 2;
}

.rail-foot {
  position: relative;
  z-index: 2;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px dashed var(--pergaminho);
  display: grid; place-items: center;
  color: var(--pergaminho);
  font-family: var(--mono);
  font-size: 9px;
  background: rgba(10,31,26,0.4);
}


/* ============================================================
   LAYOUT BASE
   ============================================================ */
.shell {
  padding-left: var(--rail);
  min-height: 100vh;
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}


/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky; top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 31, 26, 0.7);
  border-bottom: 1px solid var(--linha);
}
body.pergaminho .nav {
  background: rgba(244, 241, 232, 0.85);
  border-bottom-color: var(--linha-dark);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--display);
  font-weight: 300;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 144, "SOFT" 50;
}
.brand::after {
  content: '';
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cerrado);
  display: inline-block;
  margin-left: 0.25rem;
  align-self: center;
  box-shadow: 0 0 0 4px rgba(123, 160, 91, 0.18);
}
.brand-mark {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bruma);
  align-self: center;
}

.menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.menu a {
  display: inline-block;
  padding: 0.5rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}
.menu a:hover { background: rgba(123,160,91,0.14); color: var(--cerrado); }
.menu a.active { color: var(--cerrado); }

.nav-meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--bruma);
  text-transform: uppercase;
}

.menu-toggle {
  display: none;
  width: 38px; height: 38px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}
.menu-toggle span {
  width: 18px; height: 1.5px; background: currentColor;
  position: relative;
}
.menu-toggle span::before,
.menu-toggle span::after {
  content: ''; position: absolute; left: 0;
  width: 18px; height: 1.5px; background: currentColor;
}
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after  { top:  6px; }


/* ============================================================
   HERO — manifesto inicial
   ============================================================ */
.hero {
  position: relative;
  padding: clamp(4rem, 10vh, 8rem) 0 clamp(3rem, 6vh, 5rem);
  overflow: hidden;
}

/* topografia decorativa de fundo */
.hero::before {
  content: '';
  position: absolute;
  top: 0; right: -10%;
  width: 70%; height: 100%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 600'><g fill='none' stroke='%237BA05B' stroke-width='0.5' opacity='0.18'><path d='M0,300 Q150,260 300,300 T600,300'/><path d='M0,330 Q150,290 300,330 T600,330'/><path d='M0,360 Q150,320 300,360 T600,360'/><path d='M0,270 Q150,230 300,270 T600,270'/><path d='M0,240 Q150,200 300,240 T600,240'/><path d='M0,210 Q150,170 300,210 T600,210'/><path d='M0,180 Q150,140 300,180 T600,180'/><path d='M0,390 Q150,350 300,390 T600,390'/><path d='M0,420 Q150,380 300,420 T600,420'/></g></svg>");
  background-size: cover;
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--cerrado);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.eyebrow::before {
  content: '';
  width: 32px; height: 1px; background: var(--cerrado);
}

.hero-title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(3rem, 8vw, 7.5rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-variation-settings: "opsz" 144, "SOFT" 50;
  margin-bottom: 2rem;
}
.hero-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--cerrado);
  font-variation-settings: "opsz" 144, "SOFT" 100;
}

.hero-lede {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.55;
  max-width: 56ch;
  color: var(--areia);
  font-weight: 350;
}
body.pergaminho .hero-lede { color: var(--cerradao); opacity: 0.85; }

/* Coordenadas + dados na coluna lateral do hero */
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--bruma);
  letter-spacing: 0.06em;
}
.hero-coord {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--linha);
  border-radius: 4px;
  background: rgba(0,0,0,0.18);
}
body.pergaminho .hero-coord { border-color: var(--linha-dark); background: rgba(255,255,255,0.4); }
.hero-coord dt { color: var(--bruma); text-transform: uppercase; font-size: 10px; }
.hero-coord dd { color: var(--pergaminho); }
body.pergaminho .hero-coord dd { color: var(--espresso); }

.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  transition: transform 0.2s, background 0.2s, color 0.2s;
}
.btn-primary {
  background: var(--cerrado);
  color: var(--espresso);
}
.btn-primary:hover { background: var(--capim); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--linha);
  color: var(--pergaminho);
}
body.pergaminho .btn-ghost { border-color: var(--linha-dark); color: var(--espresso); }
.btn-ghost:hover { border-color: var(--cerrado); color: var(--cerrado); }


/* ============================================================
   SEÇÕES GERAIS
   ============================================================ */
.section {
  padding: clamp(4rem, 8vh, 7rem) 0;
  position: relative;
}
.section + .section { border-top: 1px solid var(--linha); }
body.pergaminho .section + .section { border-top-color: var(--linha-dark); }

.section-head {
  display: grid;
  grid-template-columns: 1fr 2.2fr;
  gap: clamp(1rem, 4vw, 4rem);
  margin-bottom: clamp(2.5rem, 5vh, 4rem);
  align-items: start;
}
@media (max-width: 720px) {
  .section-head { grid-template-columns: 1fr; }
}

.section-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--cerrado);
  text-transform: uppercase;
}
.section-num span { color: var(--bruma); margin-right: 0.5rem; }

.section-title {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(1.8rem, 3.8vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 96, "SOFT" 50;
  margin-top: 0.5rem;
}
.section-title em {
  font-style: italic;
  color: var(--cerrado);
  font-variation-settings: "opsz" 96, "SOFT" 100;
}

.section-intro {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--areia);
  font-size: 1.02rem;
}
body.pergaminho .section-intro { color: var(--cerradao); opacity: 0.85; }


/* ============================================================
   ESTRATIFICAÇÃO — bloco da home (a assinatura aparece grande)
   ============================================================ */
.estratos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 880px) { .estratos { grid-template-columns: 1fr; } }

.estrato {
  position: relative;
  padding: 2rem 1.6rem 2.2rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--linha);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
}
body.pergaminho .estrato {
  background: rgba(10,31,26,0.04);
  border-color: var(--linha-dark);
}
.estrato:hover { transform: translateY(-3px); border-color: var(--cerrado); }

.estrato-faixa {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 4px;
}
.estrato-1 .estrato-faixa { background: var(--capim); }
.estrato-2 .estrato-faixa { background: var(--cerrado); }
.estrato-3 .estrato-faixa { background: var(--cerradao); }

.estrato-altura {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bruma);
  margin-bottom: 1rem;
}
.estrato-nome {
  font-family: var(--display);
  font-weight: 300;
  font-size: 1.8rem;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 96;
  margin-bottom: 0.5rem;
}
.estrato-tipo {
  font-size: 0.9rem;
  color: var(--areia);
  margin-bottom: 1.2rem;
}
body.pergaminho .estrato-tipo { color: var(--cerradao); opacity: 0.8; }
.estrato-desc {
  font-size: 0.92rem;
  color: var(--areia);
  opacity: 0.78;
  line-height: 1.6;
}
body.pergaminho .estrato-desc { color: var(--cerradao); }


/* ============================================================
   CARDS DE LINHAS DE PESQUISA / SENSORES
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.75rem 1.5rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--linha);
  border-radius: 4px;
  position: relative;
  transition: background 0.25s, border-color 0.25s;
}
body.pergaminho .card {
  background: rgba(10,31,26,0.03);
  border-color: var(--linha-dark);
}
.card:hover { background: rgba(123,160,91,0.08); border-color: var(--cerrado); }

.card-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cerrado);
  margin-bottom: 0.75rem;
  display: inline-block;
}
.card-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.card-text {
  font-size: 0.92rem;
  color: var(--areia);
  opacity: 0.82;
  line-height: 1.6;
}
body.pergaminho .card-text { color: var(--cerradao); }


/* ============================================================
   DADOS — números e métricas
   ============================================================ */
.dados {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  border-top: 1px solid var(--linha);
  border-bottom: 1px solid var(--linha);
}
body.pergaminho .dados { border-color: var(--linha-dark); }

.dado {
  padding: 2.2rem 1.5rem;
  border-right: 1px solid var(--linha);
}
body.pergaminho .dado { border-right-color: var(--linha-dark); }
.dado:last-child { border-right: 0; }
@media (max-width: 700px) {
  .dado { border-right: 0; border-bottom: 1px solid var(--linha); }
  body.pergaminho .dado { border-bottom-color: var(--linha-dark); }
  .dado:last-child { border-bottom: 0; }
}

.dado-num {
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variation-settings: "opsz" 144, "SOFT" 50;
  color: var(--cerrado);
}
.dado-num sup {
  font-family: var(--mono);
  font-size: 0.4em;
  color: var(--bruma);
  vertical-align: super;
  margin-left: 0.25rem;
  letter-spacing: 0.05em;
}
.dado-label {
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--bruma);
}


/* ============================================================
   TIMELINE METODOLÓGICO
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0.6rem; top: 0; bottom: 0;
  width: 1px;
  background: var(--linha);
}
body.pergaminho .timeline::before { background: var(--linha-dark); }

.tline-item {
  position: relative;
  padding: 0 0 2.5rem;
}
.tline-item::before {
  content: '';
  position: absolute;
  left: -2.5rem;
  top: 0.4rem;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--espresso);
  border: 2px solid var(--cerrado);
  box-shadow: 0 0 0 4px rgba(123,160,91,0.12);
}
body.pergaminho .tline-item::before { background: var(--pergaminho); }

.tline-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cerrado);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}
.tline-title {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.tline-text {
  font-size: 0.95rem;
  color: var(--areia);
  opacity: 0.85;
  line-height: 1.65;
  max-width: 65ch;
}
body.pergaminho .tline-text { color: var(--cerradao); }


/* ============================================================
   TABELAS — sensores, índices, classificadores
   ============================================================ */
.tabela {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.tabela th, .tabela td {
  text-align: left;
  padding: 0.95rem 0.5rem;
  border-bottom: 1px solid var(--linha);
  vertical-align: top;
}
body.pergaminho .tabela th, body.pergaminho .tabela td {
  border-bottom-color: var(--linha-dark);
}
.tabela th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bruma);
  font-weight: 500;
  padding-bottom: 0.65rem;
}
.tabela td:first-child {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--pergaminho);
}
body.pergaminho .tabela td:first-child { color: var(--espresso); }
.tabela td code {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--cerrado);
  background: rgba(123,160,91,0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}


/* ============================================================
   PROJECT CARD HERO
   ============================================================ */
.proj-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--linha);
  border-radius: 4px;
  overflow: hidden;
  background: rgba(255,255,255,0.02);
  margin-bottom: 1.5rem;
}
body.pergaminho .proj-card {
  border-color: var(--linha-dark);
  background: rgba(10,31,26,0.025);
}
@media (max-width: 800px) { .proj-card { grid-template-columns: 1fr; } }

.proj-thumb {
  background: linear-gradient(135deg, var(--cerradao), var(--cerrado) 60%, var(--capim));
  position: relative;
  min-height: 320px;
  overflow: hidden;
}
.proj-thumb svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.proj-body { padding: 2.5rem 2rem; }
.proj-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bruma);
  margin-bottom: 0.75rem;
  display: flex; gap: 1rem; flex-wrap: wrap;
}
.proj-meta span { display: inline-flex; align-items: center; gap: 0.4rem; }
.proj-meta span::before {
  content: ''; width: 6px; height: 6px;
  border-radius: 50%; background: var(--cerrado);
  display: inline-block;
}
.proj-title {
  font-family: var(--display);
  font-size: 2rem;
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  font-variation-settings: "opsz" 96, "SOFT" 50;
}
.proj-text {
  color: var(--areia);
  opacity: 0.85;
  font-size: 0.96rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}
body.pergaminho .proj-text { color: var(--cerradao); }

.proj-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cerrado);
  border-bottom: 1px solid var(--cerrado);
  padding-bottom: 0.25rem;
}


/* ============================================================
   FORM — contato
   ============================================================ */
.form {
  display: grid;
  gap: 1.25rem;
  max-width: 640px;
}
.form-row { display: grid; gap: 0.4rem; }
.form-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bruma);
}
.form-input, .form-text {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--linha);
  padding: 0.6rem 0;
  font-family: var(--body);
  font-size: 1rem;
  color: var(--pergaminho);
  transition: border-color 0.2s;
}
body.pergaminho .form-input, body.pergaminho .form-text {
  color: var(--espresso);
  border-bottom-color: var(--linha-dark);
}
.form-input:focus, .form-text:focus {
  outline: 0;
  border-bottom-color: var(--cerrado);
}
.form-text { resize: vertical; min-height: 120px; }


/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: clamp(3rem, 6vh, 5rem) 0 2rem;
  border-top: 1px solid var(--linha);
  background: rgba(0,0,0,0.25);
}
body.pergaminho .footer {
  border-top-color: var(--linha-dark);
  background: rgba(10,31,26,0.05);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (max-width: 760px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

.foot-brand {
  font-family: var(--display);
  font-weight: 300;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.foot-tagline {
  font-size: 0.92rem;
  color: var(--areia);
  opacity: 0.75;
  max-width: 32ch;
  line-height: 1.55;
}
body.pergaminho .foot-tagline { color: var(--cerradao); }

.foot-col h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bruma);
  margin-bottom: 1rem;
  font-weight: 500;
}
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 0.55rem; font-size: 0.92rem; }
.foot-col a { color: var(--areia); opacity: 0.85; transition: color 0.2s; }
body.pergaminho .foot-col a { color: var(--cerradao); }
.foot-col a:hover { color: var(--cerrado); opacity: 1; }

.foot-base {
  padding-top: 1.5rem;
  border-top: 1px solid var(--linha);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bruma);
}
body.pergaminho .foot-base { border-top-color: var(--linha-dark); }


/* ============================================================
   UTILS
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ============================================================
   RESPONSIVE NAV
   ============================================================ */
@media (max-width: 880px) {
  :root { --rail: 36px; }
  .menu { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--espresso); flex-direction: column; padding: 1rem var(--gutter);
    border-bottom: 1px solid var(--linha); }
  body.pergaminho .menu { background: var(--pergaminho); border-bottom-color: var(--linha-dark); }
  .menu.open { display: flex; }
  .menu-toggle { display: inline-flex; }
  .nav-meta { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; }
  .rail-glyph { font-size: 8px; }
}