:root {
  --fundo: #ffffff;
  --texto: #1a1a1a;
  --suave: #5c5c5c;
  --borda: #e3e3e3;
  --destaque: #e8590c;
  --caixa: #f6f6f4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #141414;
    --texto: #ececec;
    --suave: #a3a3a3;
    --borda: #2e2e2e;
    --destaque: #ff8a3d;
    --caixa: #1e1e1e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

header img { width: 44px; height: 44px; border-radius: 10px; }
header a { color: inherit; text-decoration: none; font-weight: 600; font-size: 18px; }

h1 { font-size: 28px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
p, li { color: var(--texto); }
.suave { color: var(--suave); font-size: 14px; }
a { color: var(--destaque); }

nav.rodape {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--borda);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.caixa {
  background: var(--caixa);
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: 16px;
  margin: 16px 0;
}

.codigo {
  font: 14px/1.5 ui-monospace, Consolas, monospace;
  word-break: break-all;
  user-select: all;
}

button {
  font: inherit;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  border: 0;
  background: var(--destaque);
  color: #fff;
  cursor: pointer;
}

[hidden] { display: none !important; }