/* SAB — Sociedade de Arqueologia Brasileira
   Direção: o site é a paisagem da marca. Terracota como protagonista
   (hero e aberturas de página), colinas verde/marrom no horizonte,
   ondas âmbar/argila nas transições, creme como papel das seções. */

:root {
  --bg: #f3ecdd;          /* creme (papel) */
  --bg-raise: #ece1cb;    /* faixa creme mais densa */
  --ink: #2a1309;         /* marrom-terra profundo (texto) */
  --ink-soft: #6d4f3c;    /* texto secundário */
  --terra: #9f2915;       /* terracota */
  --terra-dark: #7e1f0e;
  --amber: #e18e00;       /* âmbar */
  --clay: #bd7857;        /* argila */
  --green: #003d32;       /* verde profundo — paisagem */
  --brown: #391708;       /* marrom — paisagem, header, rodapé */
  --hair: rgba(42, 19, 9, 0.22);
  --cream: #f3ecdd;
  --cream-soft: rgba(243, 236, 221, 0.88);
  --font-display: "Bricolage Grotesque", "Trebuchet MS", sans-serif;
  --font-body: "Instrument Sans", "Segoe UI", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1f1109;
    --bg-raise: #291709;
    --ink: #f0e7d6;
    --ink-soft: #c8a98f;
    --terra: #a8311b;
    --terra-dark: #8c2512;
    --amber: #eda023;
    --clay: #c98c6d;
    --green: #0a4a3d;
    --brown: #180c05;
    --hair: rgba(240, 231, 214, 0.25);
    --cream: #f0e7d6;
    --cream-soft: rgba(240, 231, 214, 0.88);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1f1109;
  --bg-raise: #291709;
  --ink: #f0e7d6;
  --ink-soft: #c8a98f;
  --terra: #a8311b;
  --terra-dark: #8c2512;
  --amber: #eda023;
  --clay: #c98c6d;
  --green: #0a4a3d;
  --brown: #180c05;
  --hair: rgba(240, 231, 214, 0.25);
  --cream: #f0e7d6;
  --cream-soft: rgba(240, 231, 214, 0.88);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
}
img { max-width: 100%; height: auto; }
a { color: var(--terra); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
::selection { background: var(--amber); color: #2a1309; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin: 0 0 0.6em;
}
h2 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); }
h3 { font-size: 1.3rem; line-height: 1.25; }
p { margin: 0 0 1em; }

.wrap {
  max-width: 74rem;
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.72rem;
  color: var(--terra);
  margin: 0 0 1.1rem;
}
.section { padding-block: 4.5rem; }
.section .lead {
  max-width: 44rem;
  font-size: 1.15rem;
  color: var(--ink-soft);
}

/* ---------- Faixas de paisagem ---------- */
.strip { display: block; width: 100%; height: auto; }
.strip-top { margin-bottom: -1px; }
.strip-bottom { margin-top: -1px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--brown);
  color: var(--cream);
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding-block: 0.9rem;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--cream);
  margin-right: auto;
}
.brand img { height: 52px; width: auto; }
.brand span {
  font-family: var(--font-display);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.64rem;
  line-height: 1.6;
  max-width: 12rem;
  border-left: 1px solid rgba(243, 236, 221, 0.35);
  padding-left: 1rem;
}
@media (max-width: 480px) { .brand span { display: none; } }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(243, 236, 221, 0.5);
  color: var(--cream);
  font-family: var(--font-display);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}
.site-nav { display: flex; align-items: center; gap: 1.6rem; flex-wrap: wrap; }
.site-nav a {
  color: var(--cream);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding-block: 0.4rem;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--amber); }
.site-nav a[aria-current="page"] { color: var(--amber); border-bottom-color: var(--amber); }
.site-nav .btn-member {
  color: #2a1309;
  background: var(--amber);
  padding: 0.6rem 1.2rem;
  border-bottom: none;
}
.site-nav .btn-member:hover { background: var(--clay); }

@media (max-width: 960px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    padding-block: 0.6rem 1.2rem;
  }
  .site-nav.open { display: flex; }
}

/* ---------- Botões ---------- */
.actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  text-decoration: none;
  padding: 0.95rem 1.8rem;
  border: 1px solid transparent;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.btn-primary { background: var(--terra); color: var(--cream); }
.btn-primary:hover { background: var(--terra-dark); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--terra); color: var(--terra); }
.btn-cream { border-color: var(--cream); color: var(--cream); }
.btn-cream:hover { background: rgba(243, 236, 221, 0.14); }
.btn-amber { background: var(--amber); color: #2a1309; }
.btn-amber:hover { background: var(--clay); }

/* ---------- Hero ---------- */
.hero-body { background: var(--terra); color: var(--cream); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
  padding-block: 3rem 4.5rem;
}
.hero-grid .eyebrow { color: var(--amber); }
.hero-grid h1 {
  color: var(--cream);
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  font-weight: 650;
  margin-bottom: 1.1rem;
}
.hero-grid .lead { color: var(--cream-soft); font-size: 1.18rem; max-width: 36rem; }
.hero-logo { text-align: center; }
.hero-logo img {
  width: clamp(230px, 26vw, 360px);
}
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; padding-block: 2.5rem 3.5rem; }
  .hero-logo { order: -1; text-align: left; }
  .hero-logo img { width: clamp(180px, 42vw, 240px); }
}

/* ---------- Números ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding-block: 2.8rem;
  border-bottom: 1px solid var(--hair);
}
@media (max-width: 880px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat b {
  display: block;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  color: var(--terra);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
}

/* ---------- Aberturas de página internas ---------- */
.page-head-body { background: var(--terra); color: var(--cream); }
.page-head-body .wrap { padding-block: 2.6rem 3.6rem; }
.page-head-body .eyebrow { color: var(--amber); }
.page-head-body h1 { color: var(--cream); font-size: clamp(2.2rem, 5vw, 3.4rem); margin-bottom: 0.9rem; }
.page-head-body p { max-width: 42rem; font-size: 1.15rem; color: var(--cream-soft); margin: 0; }

/* ---------- Listas editoriais (notícias, eventos) ---------- */
.feed { margin-top: 2.5rem; border-top: 1px solid var(--hair); }
.feed article {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1.5rem;
  padding-block: 1.8rem;
  border-bottom: 1px solid var(--hair);
}
@media (max-width: 720px) {
  .feed article { grid-template-columns: 1fr; gap: 0.4rem; }
}
.feed .date {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0.3rem 0 0;
  font-variant-numeric: tabular-nums;
}
.feed h3 { margin-bottom: 0.4rem; }
.feed h3 a { color: inherit; text-decoration: none; }
.feed h3 a:hover { color: var(--terra); }
.feed p { color: var(--ink-soft); margin: 0; max-width: 56rem; }
.feed .where { font-family: var(--font-display); font-size: 0.9rem; color: var(--ink-soft); }

/* ---------- Colunas de acervo ---------- */
.shelf {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
}
@media (max-width: 880px) { .shelf { grid-template-columns: 1fr; gap: 2rem; } }
.shelf article { border-top: 3px solid var(--terra); padding-top: 1.2rem; min-width: 0; }
.shelf article:nth-child(2) { border-top-color: var(--amber); }
.shelf article:nth-child(3) { border-top-color: var(--clay); }
.shelf p { color: var(--ink-soft); }
.shelf .more {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

/* ---------- Faixas ---------- */
.band-terra { background: var(--terra); color: var(--cream); }
.band-terra .eyebrow { color: var(--amber); }
.band-terra h2 { color: var(--cream); }
.band-terra .lead { color: var(--cream-soft); }
.band-terra a { color: var(--cream); }
.band-cream { background: var(--bg-raise); }

/* ---------- Filiação ---------- */
.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  margin-top: 2.5rem;
}
@media (max-width: 880px) { .plans { grid-template-columns: 1fr; } }
.plan {
  background: var(--bg);
  padding: 2.2rem 1.8rem;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.plan h3 { margin: 0; }
.plan .price {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 650;
  color: var(--terra);
  font-variant-numeric: tabular-nums;
  margin: 0;
}
.plan .price small { font-size: 0.85rem; font-weight: 500; color: var(--ink-soft); letter-spacing: 0.08em; }
.plan p { color: var(--ink-soft); margin: 0; }
.plan .more { margin-top: auto; padding-top: 1.2rem; }

/* ---------- Documentos ---------- */
.doc-list { list-style: none; margin: 2.2rem 0 0; padding: 0; border-top: 1px solid var(--hair); }
.doc-list li {
  display: flex;
  gap: 1.4rem;
  align-items: baseline;
  flex-wrap: wrap;
  padding-block: 1.2rem;
  border-bottom: 1px solid var(--hair);
  min-width: 0;
}
.doc-list .tag {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--terra);
  min-width: 7.5rem;
}
.doc-list a { color: var(--ink); }
.doc-list a:hover { color: var(--terra); }

/* ---------- Regionais ---------- */
.regionais {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 0;
  margin: 2.2rem 0 0;
  list-style: none;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.regionais li {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 2.6vw, 1.6rem);
  letter-spacing: 0.04em;
  padding: 1.3rem 2.4rem 1.3rem 0;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.regionais li::before {
  content: "";
  width: 0.6em;
  height: 0.6em;
  border-radius: 50%;
  background: var(--amber);
}
.regionais li:nth-child(odd)::before { background: var(--terra); }

/* ---------- Contato ---------- */
.contacts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; margin-top: 2.5rem; }
@media (max-width: 880px) { .contacts { grid-template-columns: 1fr; } }
.contacts article { border-top: 3px solid var(--terra); padding-top: 1.2rem; min-width: 0; }
.contacts article:nth-child(2) { border-top-color: var(--amber); }
.contacts article:nth-child(3) { border-top-color: var(--clay); }
.contacts p { color: var(--ink-soft); }
.contacts code {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--terra);
  word-break: break-all;
}

/* ---------- Rodapé ---------- */
.site-footer { background: var(--brown); color: var(--cream); }
.site-footer .wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 3rem;
  padding-block: 4rem 2.5rem;
}
@media (max-width: 820px) { .site-footer .wrap { grid-template-columns: 1fr; gap: 2.2rem; } }
.site-footer img { height: 84px; width: auto; margin-bottom: 1.2rem; }
.site-footer p { color: rgba(243, 236, 221, 0.75); }
.site-footer h4 {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--amber);
  margin-bottom: 1.1rem;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.site-footer a { color: var(--cream); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.site-footer .legal {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(243, 236, 221, 0.2);
  padding-top: 1.4rem;
  font-size: 0.85rem;
  color: rgba(243, 236, 221, 0.65);
}
.site-footer .legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer .legal .softaliza {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.site-footer .legal .softaliza:hover { opacity: 1; text-decoration: none; }
.site-footer .legal .softaliza img { height: 16px; width: auto; margin: 0; }

/* ---------- Movimento ---------- */
.site-header { transition: box-shadow 0.3s; }
.site-header.scrolled { box-shadow: 0 6px 24px rgba(42, 19, 9, 0.28); }

@media (prefers-reduced-motion: no-preference) {
  .hero-grid > div:first-child { animation: rise 0.8s cubic-bezier(0.22, 0.8, 0.3, 1) both; }
  .hero-grid .actions { animation: rise 0.8s cubic-bezier(0.22, 0.8, 0.3, 1) 0.2s both; }
  .hero-logo img {
    animation: rise 0.9s cubic-bezier(0.22, 0.8, 0.3, 1) 0.15s both,
               float 7s ease-in-out 1.4s infinite alternate;
  }
  .strip-top path { animation: rise 1s cubic-bezier(0.22, 0.8, 0.3, 1) both; }
  .strip-top path:nth-child(3) { animation-delay: 0.08s; }
  .strip-top path:nth-child(4) { animation-delay: 0.16s; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: none; }
}
@keyframes float {
  from { transform: translateY(0); }
  to { transform: translateY(-12px); }
}

.js-motion .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.22, 0.8, 0.3, 1);
}
.js-motion .reveal.in { opacity: 1; transform: none; }

.btn { transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(42, 19, 9, 0.18); }
.btn:active { transform: none; box-shadow: none; }

.feed article { transition: background-color 0.25s; }
.feed article:hover { background: rgba(159, 41, 21, 0.05); }
.feed article:hover .date { color: var(--terra); }

.shelf article, .contacts article { transition: transform 0.25s; }
.shelf article:hover, .contacts article:hover { transform: translateY(-5px); }

.plan { transition: background-color 0.25s; }
.plan:hover { background: var(--bg-raise); }

.regionais li { transition: color 0.2s; }
.regionais li:hover { color: var(--terra); }

/* ---------- Prosa ---------- */
.prose { max-width: 46rem; }
.prose h2 { margin-top: 2.6rem; font-size: clamp(1.6rem, 3.2vw, 2.1rem); }
.prose p { color: var(--ink); }