/* Cartas prontas: bloco de texto copiável, chamada de topo e índice */

.letter {
  border: 1px solid var(--rule-strong);
  background: var(--paper-2);
  margin: 26px 0 14px;
}

.letter-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 10px 14px 10px 20px;
  border-bottom: 1px solid var(--rule);
}

.letter-label {
  font-family: "Martian Mono", ui-monospace, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite-mute);
}

.letter-copy { min-width: 132px; justify-content: center; }
.letter-copy.is-copied { background: var(--pass); border-color: var(--pass); color: var(--on-ink); }

.letter-text {
  padding: 20px 20px 22px;
  overflow-wrap: anywhere;
}

.article-content .letter-text p {
  font-size: 0.96rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.article-content .letter-text p:last-child { margin-bottom: 0; }

.article-content p.letter-note {
  font-size: 0.96rem;
  line-height: 1.65;
  color: var(--graphite-mute);
  margin-bottom: 8px;
}

.cta-box {
  border: 1px solid var(--ink);
  background: var(--paper-2);
  padding: 22px 22px 24px;
  margin: 8px 0 30px;
}

.article-content .cta-box p.cta-box-title {
  margin: 0 0 8px;
  font-size: 1.16rem;
  font-weight: 600;
  line-height: 1.3;
}

.article-content .cta-box p { font-size: 1.02rem; margin-bottom: 16px; }

.cta-box-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.toc {
  border: 1px solid var(--rule);
  padding: 14px 18px 10px;
  margin: 0 0 30px;
}

.toc-title {
  font-family: "Martian Mono", ui-monospace, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite-mute);
  margin-bottom: 8px;
}

.article-content .toc ul { margin: 0 0 0 18px; }
.article-content .toc li { font-size: 0.96rem; margin-bottom: 4px; }

@media (max-width: 620px) {
  .letter-head { padding: 10px 12px 10px 16px; }
  .letter-text { padding: 16px 16px 18px; }
  .cta-box { padding: 18px 16px 20px; }
  .cta-box-actions .btn { width: 100%; justify-content: center; }
}