/* ==========================================================================
   GERETT — CADERNO DIGITAL DE ESTUDOS
   Documento gerado a partir do acervo do portal • Anotações persistentes
   • Exercícios com gabarito • Exportação em Markdown • Impressão
   Reaproveita .fc-setup-card / .fc-select / .fc-chip de flashcards.css
   ========================================================================== */

/* ===== Palco ===== */
.cd-stage {
  max-width: 860px;
  margin-inline: auto;
}

/* [hidden] deve vencer qualquer display de classe */
.cd-artigo[hidden], .cd-setup[hidden] { display: none !important; }

/* ==========================================================
   ESTADO 1 · SELEÇÃO
   ========================================================== */
.cd-setup { display: grid; place-items: center; padding-block: clamp(8px, 3vh, 32px); }

/* ==========================================================
   ESTADO 2 · DOCUMENTO (estética de caderno/papel)
   ========================================================== */
.cd-artigo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px var(--shadow-md), inset 0 1px 0 var(--glass-border);
  padding: clamp(22px, 4.5vw, 52px);
}

/* --- Barra de ações --- */
.cd-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: clamp(18px, 3vw, 30px);
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--border-strong);
}
.cd-tools-right { display: flex; gap: 8px; flex-wrap: wrap; }
.cd-tool-btn { padding: 9px 16px; font-size: 0.88rem; }

/* --- Cabeçalho do documento --- */
.cd-doc-head { margin-bottom: clamp(20px, 4vw, 34px); }
.cd-titulo {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-top: 12px;
}
.cd-subtitulo {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* --- Seções genéricas do documento --- */
.cd-secao { margin-bottom: clamp(24px, 4vw, 40px); }
.cd-secao h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 14px;
  padding-left: 14px;
  border-left: 4px solid var(--brand);
}
.cd-secao p { line-height: 1.75; color: var(--text); overflow-wrap: break-word; }
.cd-divisor {
  border: none;
  border-top: 1px solid var(--border-strong);
  margin: clamp(20px, 4vw, 34px) 0;
}

/* ==========================================================
   APRESENTAÇÃO DO PROFESSOR + OBJETIVOS
   ========================================================== */
.cd-prof-apresentacao {
  font-size: 1.02rem;
  background: var(--brand-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}
.cd-objetivos-lista {
  list-style: none;
  display: grid;
  gap: 10px;
  counter-reset: obj;
}
.cd-objetivos-lista li {
  counter-increment: obj;
  position: relative;
  padding-left: 44px;
  min-height: 28px;
  display: flex;
  align-items: center;
  line-height: 1.6;
}
.cd-objetivos-lista li::before {
  content: counter(obj, decimal-leading-zero);
  position: absolute;
  left: 0;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
}

/* ==========================================================
   REFERÊNCIAS (padrão ABNT simplificado)
   ========================================================== */
.cd-refs-lista {
  list-style: none;
  display: grid;
  gap: 10px;
}
.cd-refs-lista li {
  padding-left: 18px;
  position: relative;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-secondary);
}
.cd-refs-lista li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.62em;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--c-copper);
}
.cd-ref-tipo {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-copper-light);
  margin-right: 6px;
}
.cd-refs-nota { margin-top: 12px; font-size: 0.8rem; color: var(--text-tertiary); }

/* ==========================================================
   PARTE 1 · TEORIA
   ========================================================== */
.cd-definicao-box {
  border: 1px solid var(--border-strong);
  border-left: 5px solid var(--brand);
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  padding: 18px 20px;
  margin-bottom: 26px;
}
.cd-definicao-box .cd-box-tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
}
.cd-teoria h4 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  margin: 26px 0 10px;
  scroll-margin-top: calc(var(--nav-h) + 16px);
}
.cd-teoria h4 small {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-tertiary);
  margin-right: 8px;
}

/* Fórmula em bloco de código */
.cd-formula {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  white-space: pre-wrap;
  background: var(--c-matte-black);
  color: var(--c-laser-cyan);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  overflow-x: auto;
  margin: 12px 0 22px;
}

/* Aplicações práticas como cartões */
.cd-app-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  padding: 16px 18px;
  margin-top: 12px;
}
.cd-app-card h5 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cd-app-card h5::before {
  content: "▶";
  font-size: 0.62rem;
  color: var(--c-copper-light);
}
.cd-app-card p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }

/* ==========================================================
   PARTE 2 · ANOTAÇÕES DO ALUNO (persistem em localStorage)
   ========================================================== */
.cd-anotacoes-wrap {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(var(--bg-card) 0px, var(--bg-card) 31px, var(--grid-line) 32px),
    var(--bg-card);
  padding: 20px;
}
.cd-anotacoes-wrap > strong { font-family: var(--font-display); }
.cd-anotacoes textarea {
  width: 100%;
  min-height: 180px;
  margin-top: 14px;
  resize: vertical;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 32px; /* casa com as linhas do papel */
  caret-color: var(--brand);
}
.cd-anotacoes-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fc-ok);
  opacity: 0;
  transition: opacity .3s;
}
.cd-anotacoes-status.visivel { opacity: 1; }
.cd-prompts-lista { margin: 16px 0 0; display: grid; gap: 8px; }
.cd-prompts-lista li {
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}
.cd-prompts-lista li::before {
  content: "✎";
  position: absolute;
  left: 0;
  color: var(--c-copper-light);
}

/* ==========================================================
   PARTE 3 · EXERCÍCIOS + GABARITO (<details> nativo)
   ========================================================== */
.cd-exercicio {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-top: 14px;
  background: var(--bg-alt);
}
.cd-exercicio-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.cd-ex-numero {
  flex-shrink: 0;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
}
.cd-ex-tipo {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.cd-exercicio p.enunciado { line-height: 1.7; }
details.cd-gabarito { margin-top: 14px; }
details.cd-gabarito summary {
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fc-ok);
  list-style: none;
}
details.cd-gabarito summary::-webkit-details-marker { display: none; }
details.cd-gabarito summary::before {
  content: "▸";
  transition: transform .25s var(--ease-fluid);
}
details.cd-gabarito[open] summary::before { transform: rotate(90deg); }
details.cd-gabarito .cd-gab-corpo {
  margin-top: 12px;
  padding: 14px 16px;
  border-left: 4px solid var(--fc-ok);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--fc-ok) 7%, transparent);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text);
}
details.cd-gabarito .cd-gab-corpo b { color: var(--fc-ok); }

/* Skeleton de geração */
.cd-loading-doc {
  height: 420px;
  border-radius: var(--radius-xl);
  background: linear-gradient(100deg, var(--bg-alt) 40%, var(--bg-card) 50%, var(--bg-alt) 60%);
  background-size: 200% 100%;
  animation: fcShimmer 1.2s linear infinite;
  border: 1px solid var(--border);
}

/* ==========================================================
   RESPONSIVO
   ========================================================== */
@media (max-width: 520px) {
  .cd-toolbar { flex-direction: column; align-items: stretch; }
  .cd-tools-right { justify-content: stretch; }
  .cd-tools-right .cd-tool-btn { flex: 1; justify-content: center; }
  .cd-secao h3 { font-size: 1.12rem; }
}

/* ==========================================================
   IMPRESSÃO — só o documento vai para o papel
   ========================================================== */
@media print {
  .no-print,
  .navbar, .mobile-nav-overlay, .mobile-bottom-nav,
  .footer, .scroll-top, .contact-fab, .progress-bar, .noise-overlay { display: none !important; }
  body { padding: 0; background: #fff; color: #000; }
  .cd-stage { max-width: 100%; }
  .cd-artigo { border: none; box-shadow: none; padding: 0; }
  .cd-secao { break-inside: avoid-page; }
  details.cd-gabarito { display: none; } /* gabarito não sai na impressão do aluno */
  .cd-anotacoes textarea { border: 1px solid #ccc; min-height: 220px; }
}