/* ============================================================
   margem — sistema de design
   Fonte única: brandbook oficial v1.0 (fechado em 24/07/2026)
   ============================================================ */

:root {
  --bg: #F6F1E4;
  --bg-alt: #EDE6D2;
  --ink: #17140F;
  --line: #E2DAC2;
  --accent: #35507A;
  --warm: #9C4221;

  --radius: 2px;
  --max-width: 1180px;
  --gutter: clamp(20px, 5vw, 64px);

  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Space Mono", "SF Mono", Consolas, monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #17140F;
  --bg-alt: #211D16;
  --ink: #F3EDE0;
  --line: #362F24;
  --accent: #7D9DC7;
  --warm: #E38B5C;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --bg: #17140F;
    --bg-alt: #211D16;
    --ink: #F3EDE0;
    --line: #362F24;
    --accent: #7D9DC7;
    --warm: #E38B5C;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

img, svg { max-width: 100%; }

a { color: inherit; }

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

/* ---------- Tipografia ---------- */

h1, h2, h3, .font-serif { font-family: var(--font-serif); font-weight: 600; line-height: 1.15; margin: 0; }

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; max-width: 62ch; }

.lede {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  color: var(--accent);
  max-width: 46ch;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm);
}

.tag::before { content: "¶ "; }

.meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink);
  opacity: 0.6;
  letter-spacing: 0.02em;
}

/* selo "?" — o que ainda não está definido */
.badge-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  border: 1px solid var(--warm);
  color: var(--warm);
  font-family: var(--font-mono);
  font-size: 0.85em;
  flex: none;
}

/* ---------- Cabeçalho ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  padding-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand svg { width: 20px; height: auto; color: var(--ink); }

.brand span {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.3rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--ink);
  opacity: 0.75;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.nav a:hover, .nav a[aria-current="page"] { opacity: 1; border-bottom-color: var(--warm); }

.theme-toggle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 7px 10px;
  cursor: pointer;
}

.theme-toggle:hover { border-color: var(--warm); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 12px;
  cursor: pointer;
}

/* ---------- Botões ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.btn:hover { background: var(--ink); color: var(--bg); }

.btn-primary {
  background: var(--warm);
  border-color: var(--warm);
  color: #F6F1E4;
}

.btn-primary:hover { opacity: 0.88; background: var(--warm); color: #F6F1E4; }

/* ---------- Seções / painéis ---------- */

section { padding: clamp(48px, 8vw, 96px) 0; }

.panel {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px);
}

.divider { border: none; border-top: 1px solid var(--line); margin: clamp(32px, 6vw, 56px) 0; }

/* coluna de anotação — rótulo em Space Mono + borda tracejada separando do corpo */

.annot {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

@media (min-width: 760px) {
  .annot { grid-template-columns: 200px 1fr; gap: 40px; }
  .annot-note {
    border-right: 1px dashed var(--line);
    padding-right: 24px;
  }
}

.annot-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink);
  opacity: 0.65;
  letter-spacing: 0.02em;
}

.annot-body { max-width: 62ch; }

/* ---------- Grades de cards ---------- */

.grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.grid > * { background: var(--bg); padding: clamp(20px, 3vw, 32px); }

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }

@media (min-width: 640px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 860px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.card h3 { margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }

.num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 10px;
}

/* ---------- Listas de método (ORIGEM) ---------- */

.method-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.method-list li {
  background: var(--bg);
  padding: 20px clamp(20px, 3vw, 28px);
  display: grid;
  grid-template-columns: 44px 140px 1fr;
  gap: 16px;
  align-items: baseline;
}

@media (max-width: 700px) {
  .method-list li { grid-template-columns: 32px 1fr; grid-template-areas: "n t" ". d"; }
  .method-list li .num { grid-area: n; }
  .method-list li .method-word { grid-area: t; }
  .method-list li .method-desc { grid-area: d; }
}

.method-word {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.05rem;
}

.method-desc { opacity: 0.85; margin: 0; }

/* ---------- Rodapé ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  margin-top: 40px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer .meta a { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Manifesto ---------- */

.manifesto p {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  max-width: 60ch;
  margin-bottom: 1.3em;
}

/* ---------- Hero ---------- */

.hero { padding-top: clamp(56px, 10vw, 110px); }

.hero .tag { margin-bottom: 18px; display: inline-block; }

.hero h1 { margin-bottom: 22px; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }

/* ---------- Formulário (Contato) ---------- */

form.contact-form { display: grid; gap: 18px; max-width: 560px; }

.contact-form label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
  margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 12px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.contact-form textarea { min-height: 140px; resize: vertical; }

.contact-form input:focus,
.contact-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------- Utilidades ---------- */

.mt-0 { margin-top: 0; }
.center { text-align: center; }
.small { font-size: 0.9rem; }
.muted { opacity: 0.7; }

@media (max-width: 760px) {
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.nav-open .nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
    padding-top: 18px;
  }
  .site-header .wrap { flex-wrap: wrap; }
}