/* =========================================================================
   Estilos das telas de estudo: biblioteca, ficha da aula e flashcards.
   Complementa style.css (que traz as variáveis e a casca) e ai.css.
   ========================================================================= */

/* ------------------------------------------------------------- barra lateral */

.sidebar-scrollable {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-scrollable .sidebar-section {
  flex: none;
  overflow-y: visible;
  padding: 8px 12px;
}

.sidebar-section-ferramentas {
  padding-top: 4px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 8px;
  padding: 0 4px;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Base unificada para linhas e cards da sidebar (Disciplinas e Ferramentas) */
.item-row {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-main);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

.item-row:link,
.item-row:visited {
  color: var(--text-main);
  text-decoration: none;
}

.item-row:hover {
  text-decoration: none;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(99, 102, 241, 0.35);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.item-row:active {
  transform: translateY(0) scale(0.99);
}

.item-row.active {
  background: rgba(99, 102, 241, 0.18);
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.2);
}

/* Ícone base dentro do card */
.item-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.item-row:hover .item-icon {
  transform: scale(1.06);
}

/* Conteúdo de texto do card */
.item-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
}

.item-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.25;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s;
}

.item-row:hover .item-sub {
  color: var(--text-main);
  opacity: 0.85;
}

/* ------------------------------------------------- cards específicos de ferramentas */

.ferramenta-card {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ferramenta-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.ferramenta-card:hover::before {
  opacity: 1;
}

/* Emblemas coloridos por ferramenta */
.icone-arquivos {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
}

.icone-relogio {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
}

.icone-transcrever {
  background: rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.3);
}

.icone-cambio {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
}

.icone-voz {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.3);
}

.icone-horario {
  background: rgba(236, 72, 153, 0.15);
  border-color: rgba(236, 72, 153, 0.3);
}

/* Setinha indicadora discreta à direita */
.ferramenta-seta {
  font-size: 1.1rem;
  line-height: 1;
  color: var(--text-dim);
  opacity: 0.35;
  margin-left: 2px;
  flex-shrink: 0;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease, color 0.2s ease;
}

.ferramenta-card:hover .ferramenta-seta,
.btn-instalar:hover .ferramenta-seta {
  opacity: 0.95;
  color: var(--primary);
  transform: translateX(3px);
}

.painel-dia {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 10px 12px;
  margin: 0 12px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.painel-dia-item { text-align: center; }

.painel-dia-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.painel-dia-rot {
  display: block;
  font-size: 0.66rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.icon-btn-xs {
  font-size: 0.85rem;
  padding: 2px 6px;
  line-height: 1;
}

.lista-vazia {
  padding: 14px 12px;
  color: var(--text-dim);
  font-size: 0.84rem;
  text-align: center;
  line-height: 1.6;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  padding: 0;
}

.erro-inline {
  padding: 14px;
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
}

.txt-erro { color: #fca5a5; }


/* ---------------------------------------------------------------- biblioteca */

.biblioteca-barra {
  padding: 14px 18px;
  margin: 0 0 4px;
  border-bottom: 1px solid var(--border-light);
}

.busca-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.busca-icone {
  position: absolute;
  left: 14px;
  opacity: 0.6;
  pointer-events: none;
}

.busca-input {
  width: 100%;
  padding: 11px 40px 11px 40px;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.92rem;
}

.busca-input:focus {
  outline: none;
  border-color: var(--border-active);
}

.btn-limpar-busca {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1rem;
}

.filtro-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.chip {
  --chip-cor: var(--primary);
  padding: 5px 13px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.8rem;
  transition: all 0.15s;
  white-space: nowrap;
}

.chip:hover { color: var(--text-main); border-color: var(--chip-cor); }

.chip-ativo {
  background: color-mix(in srgb, var(--chip-cor) 22%, transparent);
  border-color: var(--chip-cor);
  color: var(--text-main);
  font-weight: 500;
}

.biblioteca-corpo {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
}

.aulas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(265px, 1fr));
  gap: 14px;
}

.aula-card {
  --card-cor: var(--primary);
  position: relative;
  padding: 15px 16px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--card-cor);
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}

.aula-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-active);
}

.aula-card.em-progresso { border-left-color: var(--accent-pink); }

.aula-card-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.aula-card-disc {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.aula-card-origem { font-size: 0.8rem; opacity: 0.7; }

.aula-card-titulo {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 10px;
}

.aula-card-info {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.aula-card-progresso { margin-top: 12px; }
.aula-card-progresso small { color: var(--accent-pink); font-size: 0.72rem; }

.aula-card-erro {
  margin-top: 10px;
  font-size: 0.76rem;
  color: #fca5a5;
}

.aula-card-topicos {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 11px;
}

.topico-tag {
  padding: 3px 9px;
  background: rgba(99, 102, 241, 0.14);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  color: #c7d2fe;
}

/* estado vazio genérico */
.estado-vazio {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
}

.estado-vazio-icone { font-size: 2.6rem; }
.estado-vazio h3 { font-family: var(--font-heading); color: var(--text-main); }
.estado-vazio p { font-size: 0.9rem; max-width: 420px; line-height: 1.6; }
.estado-vazio-acoes { display: flex; gap: 10px; margin-top: 8px; flex-wrap: wrap; justify-content: center; }

/* -------------------------------------------------------------------- busca */

.busca-resultados { display: flex; flex-direction: column; gap: 11px; }

.busca-contagem { font-size: 0.86rem; color: var(--text-muted); margin-bottom: 4px; }

.busca-item {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.15s;
}

.busca-item:hover { border-color: var(--border-active); }

.busca-item-topo {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 3px;
}

.busca-item-disc { font-size: 0.72rem; color: var(--text-dim); white-space: nowrap; }
.busca-item-meta { font-size: 0.74rem; color: var(--text-dim); margin-bottom: 7px; }

.busca-trecho {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.busca-trecho mark {
  background: rgba(236, 72, 153, 0.3);
  color: #fff;
  border-radius: 3px;
  padding: 0 2px;
}

.busca-trecho-resumo { margin-top: 6px; opacity: 0.85; }

/* -------------------------------------------------------------- ficha da aula */

.ai-drawer-largo .ai-drawer-panel,
.ai-drawer-panel.ai-drawer-largo { width: min(720px, 100vw); }

.ficha-meta { margin-bottom: 14px; }

.linha-dupla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.ficha-acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 12px 0;
  margin-bottom: 8px;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.ficha-transcricao {
  max-height: 52vh;
  overflow-y: auto;
  padding-right: 6px;
}

.trecho-linha {
  display: flex;
  gap: 11px;
  padding: 6px 0;
  font-size: 0.89rem;
  line-height: 1.65;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.trecho-tempo {
  flex-shrink: 0;
  color: var(--primary);
  font-family: ui-monospace, monospace;
  font-size: 0.76rem;
  padding-top: 3px;
}

.topicos-lista { display: flex; flex-direction: column; gap: 8px; }

.topico-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 13px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.topico-num {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 23px;
  height: 23px;
  background: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.modos-barra {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 14px;
}

.notas-conteudo { font-size: 0.9rem; line-height: 1.7; }
.notas-conteudo h2, .notas-conteudo h3, .notas-conteudo h4, .notas-conteudo h5 {
  font-family: var(--font-heading);
  margin: 16px 0 7px;
  color: #c7d2fe;
}
.notas-conteudo p { margin-bottom: 9px; }
.notas-conteudo ul { margin: 0 0 11px 20px; }
.notas-conteudo li { margin-bottom: 5px; }
.notas-conteudo code {
  background: rgba(0, 0, 0, 0.35);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
}

.ficha-cartoes { display: flex; flex-direction: column; gap: 10px; }

.cartao-mini {
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
}

.cartao-mini-frente { font-weight: 600; font-size: 0.9rem; margin-bottom: 5px; }
.cartao-mini-verso { font-size: 0.85rem; color: var(--text-muted); line-height: 1.55; }

.cartao-mini-pe {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 9px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.up-andamento { margin: 12px 0; }

.modal-divisor {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 18px 0 14px;
}

.auth-foot-note {
  margin-top: 18px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* --------------------------------------------------------------- flashcards */

.flash-corpo {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
}

.flash-numeros {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(108px, 1fr));
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.numero-bloco { text-align: center; }

.numero-valor {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.numero-rot {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.flash-revisao { max-width: 660px; margin: 0 auto; }

.flash-progresso {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.flash-barra {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.flash-barra-preench {
  height: 100%;
  width: 0;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: width 0.35s ease;
}

.flash-cartao {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.flash-origem {
  font-size: 0.73rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.flash-frente {
  font-family: var(--font-heading);
  font-size: 1.32rem;
  font-weight: 600;
  line-height: 1.45;
}

.flash-verso {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border-light);
  font-size: 1rem;
  line-height: 1.65;
  color: #e0e7ff;
}

.flash-fonte {
  margin-top: 14px;
  font-size: 0.79rem;
  font-style: italic;
  color: var(--text-dim);
  line-height: 1.5;
}

.fonte-rot { font-style: normal; text-transform: uppercase; font-size: 0.68rem; letter-spacing: 0.05em; }

.flash-acoes { margin-top: 18px; }

.flash-notas {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
}

.btn-nota {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 13px 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.15s;
}

.btn-nota:hover { transform: translateY(-2px); }
.btn-nota strong { font-size: 0.88rem; }
.btn-nota small { font-size: 0.7rem; color: var(--text-dim); }

.nota-0:hover { border-color: #ef4444; background: rgba(239, 68, 68, 0.12); }
.nota-3:hover { border-color: #f59e0b; background: rgba(245, 158, 11, 0.12); }
.nota-4:hover { border-color: var(--success-green); background: rgba(16, 185, 129, 0.12); }
.nota-5:hover { border-color: #38bdf8; background: rgba(56, 189, 248, 0.12); }

kbd {
  padding: 1px 6px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  font-size: 0.72rem;
  font-family: ui-monospace, monospace;
}

.flash-explicacao {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
}

.explicacao-topo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
}

.explicacao-passos {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-light);
  color: var(--text-muted);
  line-height: 1.65;
}

.explicacao-passos p { margin-bottom: 5px; }

/* lista de todos os cartões e histórico do algoritmo */

.flash-lista { display: flex; flex-direction: column; gap: 10px; }

.cartao-linha {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 16px;
  border-radius: var(--radius-md);
}

.cartao-linha-texto strong { font-size: 0.9rem; }
.cartao-linha-texto p { font-size: 0.83rem; color: var(--text-muted); margin: 3px 0; }
.cartao-linha-texto small { font-size: 0.72rem; color: var(--text-dim); }

.cartao-linha-estado {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  font-size: 0.74rem;
  color: var(--text-dim);
}

.historico-cartao, .historico-item {
  padding: 15px 17px;
  border-radius: var(--radius-md);
  margin-bottom: 11px;
}

.historico-cartao h3 { font-family: var(--font-heading); font-size: 1rem; margin-bottom: 6px; }
.historico-verso { font-size: 0.87rem; color: var(--text-muted); margin-bottom: 11px; }

.historico-estado, .historico-delta {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  font-size: 0.77rem;
  color: var(--text-muted);
}

.historico-item-topo {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 7px;
  font-size: 0.83rem;
}

.historico-delta { margin-bottom: 9px; }

.historico-explicacao {
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.28);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-muted);
  white-space: pre-wrap;
  word-break: break-word;
}

/* -------------------------------------------------------------------- foco */

.foco-corpo {
  flex: 1;
  overflow-y: auto;
  padding: 20px 18px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.foco-mostrador-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 420px;
}

.foco-mostrador {
  position: relative;
  width: min(320px, 78vw);
  aspect-ratio: 1;
}

.foco-mostrador canvas { width: 100%; height: 100%; display: block; }

.foco-centro {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.foco-tempo {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 13vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.foco-fase {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.foco-presets {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.foco-disciplina {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
}

.foco-disciplina label {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.foco-disciplina select { flex: 1; }

.foco-botoes {
  display: flex;
  gap: 10px;
  width: 100%;
}

.btn-grande {
  flex: 1;
  padding: 15px 20px;
  font-size: 1rem;
  font-weight: 600;
}

.foco-dica {
  font-size: 0.76rem;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.5;
}

.foco-fim {
  width: 100%;
  max-width: 560px;
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.foco-fim h3 { font-family: var(--font-heading); margin-bottom: 6px; }
.foco-fim p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 14px; }

.foco-numeros {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 620px;
}

.foco-semana {
  width: 100%;
  max-width: 620px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
}

.foco-semana h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.foco-barras {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 88px;
}

.foco-barra-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  height: 100%;
}

.foco-barra-trilho {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: flex-end;
}

.foco-barra-valor {
  width: 100%;
  background: var(--primary-gradient);
  border-radius: 4px 4px 2px 2px;
  min-height: 3px;
  transition: height 0.3s ease;
}

.foco-barra-valor.vazia { background: rgba(255, 255, 255, 0.09); }

.foco-barra-rot {
  font-size: 0.62rem;
  color: var(--text-dim);
}

/* ------------------------------------------------ progresso das ações de IA */

.ia-progresso {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.ia-progresso-topo {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
  font-size: .86rem;
}

.ia-progresso-topo strong {
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}

.ia-progresso-modelo {
  display: block;
  margin-top: 8px;
  font-size: .72rem;
  color: var(--text-dim);
}

/* prévia do texto saindo do modelo: monoespaçada e rolando sozinha */
.ia-progresso-previa {
  max-height: 190px;
  overflow-y: auto;
  margin-top: 11px;
  padding: 10px 12px;
  background: rgba(0, 0, 0, .28);
  border-radius: var(--radius-sm);
  font-size: .78rem;
  line-height: 1.6;
  color: var(--text-muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.ia-progresso-previa:empty { display: none; }

.modelo-fixo {
  font-size: .74rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin: -6px 0 14px;
}

.modelo-fixo code {
  background: rgba(0, 0, 0, .3);
  padding: 1px 5px;
  border-radius: 4px;
}

/* ------------------------------------------------- instalar como aplicativo */

.btn-instalar {
  display: flex;
  align-items: center;
  gap: 11px;
  width: calc(100% - 24px);
  margin: 8px 12px 14px;
  padding: 10px 12px;
  background: linear-gradient(135deg, rgba(99, 102, 241, .16), rgba(236, 72, 153, .13));
  border: 1px solid rgba(99, 102, 241, .35);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  font-family: var(--font-body);
  text-align: left;
  transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px rgba(99, 102, 241, .1);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-instalar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-gradient);
  opacity: 0.7;
}

.btn-instalar:hover {
  transform: translateY(-2px);
  border-color: rgba(236, 72, 153, .55);
  background: linear-gradient(135deg, rgba(99, 102, 241, .24), rgba(236, 72, 153, .2));
  box-shadow: 0 6px 18px rgba(99, 102, 241, .22);
}

.btn-instalar:active {
  transform: translateY(0) scale(0.99);
}

.btn-instalar .instalar-icone {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(99, 102, 241, .3), rgba(236, 72, 153, .3));
  border: 1px solid rgba(255, 255, 255, .15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
  transition: transform .2s ease;
}

.btn-instalar:hover .instalar-icone {
  transform: scale(1.08) translateY(-1px);
}

.btn-instalar .instalar-texto {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.btn-instalar strong {
  display: block;
  font-size: .88rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-instalar small {
  display: block;
  font-size: .71rem;
  color: var(--text-muted);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.instalar-passos p { font-size: .9rem; margin-bottom: 10px; }
.instalar-passos .passos { margin: 0 0 12px 20px; font-size: .88rem; line-height: 1.75; }
.instalar-passos .passos li { margin-bottom: 4px; }
.instalar-passos .obs {
  font-size: .78rem;
  color: var(--text-dim);
  line-height: 1.6;
  padding: 10px 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
}

.aviso-portal {
  margin: 10px 0;
  padding: 11px 13px;
  background: rgba(99, 102, 241, .12);
  border: 1px solid rgba(99, 102, 241, .35);
  border-radius: var(--radius-sm);
  font-size: .8rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ======================================================== celular / tablet */

/* Barra de navegação inferior: no celular, trocar de aba não pode depender
   de abrir a gaveta lateral. Só aparece abaixo de 768px. */
.nav-inferior { display: none; }

@media (max-width: 768px) {
  .nav-inferior {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 30;
    background: rgba(12, 16, 26, 0.96);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--border-light);
    /* respeita a barra de gestos do iPhone */
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .nav-inf-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    min-height: 56px;             /* alvo de toque confortável */
    padding: 7px 2px;
    background: none;
    border: none;
    color: var(--text-dim);
    font-family: var(--font-body);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-inf-item.active { color: var(--text-main); }

  .nav-inf-item.active .nav-inf-icone {
    transform: translateY(-1px) scale(1.12);
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.65));
  }

  .nav-inf-icone { font-size: 1.22rem; transition: transform 0.15s; }
  .nav-inf-rot { font-size: 0.63rem; letter-spacing: 0.01em; }

  .badge-inf {
    position: absolute;
    top: 4px;
    right: calc(50% - 22px);
    min-width: 17px;
    padding: 1px 5px;
    background: var(--accent-pink);
    border-radius: var(--radius-full);
    font-size: 0.6rem;
    font-weight: 700;
    color: #fff;
  }

  /* 100vh mente no celular (barra de endereço); dvh acompanha de verdade */
  .main-content {
    height: calc(100dvh - 56px);
    padding-bottom: 68px;         /* não deixa a nav inferior tapar conteúdo */
  }

  .sidebar { height: 100dvh; width: min(300px, 86vw); }

  /* A navegação de cima da gaveta vira redundante com a barra inferior */
  .sidebar .sidebar-nav { display: none; }

  /* Cabeçalhos: título em cima, botões embaixo, sem espremer */
  .chat-header {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .chat-header .ai-header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
  }

  .chat-header .ai-header-actions .btn { flex: 1 1 auto; min-height: 40px; }

  .channel-name-header { font-size: 1.05rem; }
  .channel-desc-header { font-size: 0.76rem; }

  /* Gavetas e modais ocupam a tela toda: sobra pouco espaço em celular */
  .ai-drawer-panel,
  .ai-drawer-panel.ai-drawer-largo,
  .ai-drawer-panel.ai-drawer-narrow {
    width: 100vw !important;
    max-width: 100vw;
    height: 100dvh;
    border-radius: 0;
  }

  .modal-card {
    width: calc(100vw - 20px);
    max-height: 88dvh;
    overflow-y: auto;
  }

  .modal-footer { flex-wrap: wrap; gap: 8px; }
  .modal-footer .btn { flex: 1 1 auto; min-height: 44px; }

  /* iOS dá zoom sozinho em campo com fonte menor que 16px */
  input, select, textarea, .busca-input, .form-control { font-size: 16px !important; }

  .btn, .icon-btn, .chip, .ai-tab { min-height: 40px; }
  .icon-btn-xs { min-height: 32px; min-width: 32px; }

  /* o hambúrguer nasceu com 20px de traço: pequeno demais para o dedo */
  .mobile-toggle-btn {
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }
  .mobile-toggle-btn span { width: 22px; }
  .mobile-user-avatar { min-width: 38px; min-height: 38px; }

  /* Abas de configuração da IA e da ficha: rolagem lateral em vez de quebra */
  .ai-tabs {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 6px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .ai-tabs::-webkit-scrollbar { display: none; }
  .ai-tabs .ai-tab { flex: 0 0 auto; }

  .filtro-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }
  .filtro-chips::-webkit-scrollbar { display: none; }

  .aulas-grid { grid-template-columns: 1fr; }
  .biblioteca-corpo, .flash-corpo, .foco-corpo { padding: 14px 12px 20px; }
  .biblioteca-barra { padding: 12px 14px; }

  .flash-notas { grid-template-columns: repeat(2, 1fr); }
  .btn-nota { min-height: 62px; }
  .flash-cartao { padding: 24px 18px; min-height: 200px; }
  .flash-frente { font-size: 1.14rem; }

  .cartao-linha { flex-direction: column; align-items: stretch; gap: 10px; }
  .cartao-linha-estado { flex-wrap: wrap; }

  .linha-dupla { grid-template-columns: 1fr; }
  .ficha-acoes { gap: 6px; }
  .ficha-acoes .btn { flex: 1 1 46%; }
  .ficha-transcricao { max-height: none; }

  .historico-explicacao { font-size: 0.74rem; }
  .foco-numeros { grid-template-columns: repeat(2, 1fr); }
}

/* Telas bem estreitas (celular pequeno, 360px e abaixo) */
@media (max-width: 380px) {
  .nav-inf-rot { font-size: 0.57rem; }
  .nav-inf-icone { font-size: 1.1rem; }
  .foco-mostrador { width: 84vw; }
  .flash-notas { grid-template-columns: repeat(2, 1fr); }
  .estado-vazio { padding: 40px 12px; }
  .painel-dia { grid-template-columns: repeat(3, 1fr); gap: 3px; padding: 9px 8px; }
  .painel-dia-num { font-size: 1rem; }
  .painel-dia-rot { font-size: 0.6rem; }
}

/* Nada pode furar a largura da tela */
@media (max-width: 768px) {
  html, body { overflow-x: hidden; }
  .view-panel, .biblioteca-corpo, .flash-corpo, .foco-corpo { max-width: 100vw; }
  pre, code, .busca-trecho, .trecho-texto, .cartao-mini-verso {
    overflow-wrap: anywhere;
    word-break: break-word;
  }
}

/* Celular deitado: mostrador menor para caber com os controles */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
  .foco-mostrador { width: min(200px, 42vh); }
  .foco-corpo { padding-top: 10px; }
  .foco-tempo { font-size: 1.8rem; }
}



/* =========================================================================
   ESTILOS MODERNOS DO NOVO PORTAL DE ESTUDOS (DASHBOARD, BIBLIOTECA, AULA)
   ========================================================================= */

/* ---- Barra lateral colapsada ---- */
.btn-colapsar-sidebar {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  transition: all 0.2s ease;
}
.btn-colapsar-sidebar:hover {
  color: var(--text-main);
  border-color: var(--border-active);
  background: rgba(255, 255, 255, 0.05);
}

.sidebar.sidebar-collapsed {
  width: 72px;
  min-width: 72px;
}
.sidebar.sidebar-collapsed .brand-name,
.sidebar.sidebar-collapsed .tab-label,
.sidebar.sidebar-collapsed .section-title,
.sidebar.sidebar-collapsed .item-body,
.sidebar.sidebar-collapsed .ferramenta-seta,
.sidebar.sidebar-collapsed .painel-dia,
.sidebar.sidebar-collapsed .btn-instalar span,
.sidebar.sidebar-collapsed .user-details {
  display: none !important;
}
.sidebar.sidebar-collapsed .sidebar-nav {
  padding: 8px 4px;
}
.sidebar.sidebar-collapsed .nav-tab {
  justify-content: center;
  padding: 10px 0;
}
.sidebar.sidebar-collapsed .item-row {
  justify-content: center;
  padding: 8px 0;
}
.sidebar.sidebar-collapsed .btn-instalar {
  justify-content: center;
  padding: 8px 0;
  margin: 6px auto;
  width: 44px;
}

/* ---- Dashboard de Estudos ---- */
.dashboard-corpo {
  padding: 20px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1300px;
  margin: 0 auto;
}

.dash-secao {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dash-secao-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.dash-secao-topo h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.dash-titulo-com-icone {
  display: flex;
  align-items: center;
  gap: 10px;
}
.dash-icone-titulo {
  font-size: 1.4rem;
}
.dash-titulo-com-icone h3,
.dash-titulo-com-icone h4 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}
.dash-titulo-com-icone p {
  font-size: 0.76rem;
  color: var(--text-dim);
}

/* Atalhos Rápidos Grid */
.dash-atalhos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.dash-atalho-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-main);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  position: relative;
  overflow: hidden;
}
.dash-atalho-btn:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}
.dash-atalho-btn .atalho-icone {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.atalho-icone.icone-gravar { background: rgba(99, 102, 241, 0.18); color: #818cf8; }
.atalho-icone.icone-upload { background: rgba(236, 72, 153, 0.18); color: #f472b6; }
.atalho-icone.icone-texto  { background: rgba(16, 185, 129, 0.18); color: #34d399; }
.atalho-icone.icone-transc { background: rgba(6, 182, 212, 0.18); color: #22d3ee; }
.atalho-icone.icone-cards  { background: rgba(245, 158, 11, 0.18); color: #fbbf24; }
.atalho-icone.icone-foco   { background: rgba(168, 85, 247, 0.18); color: #c084fc; }

.dash-atalho-btn .atalho-info strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
}
.dash-atalho-btn .atalho-info small {
  display: block;
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Linha de painéis duplos */
.dash-grid-dupla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 18px;
}

.dash-card-painel {
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dash-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
}

.link-btn-sm {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: none;
}
.link-btn-sm:hover { text-decoration: underline; }

/* Lista de Continuar Estudando */
.dash-aulas-mini-lista {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dash-aula-mini-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}
.dash-aula-mini-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  transform: translateX(3px);
}
.mini-card-icone {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.mini-card-info {
  flex: 1;
  min-width: 0;
}
.mini-card-materia {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.mini-card-titulo {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mini-card-meta {
  font-size: 0.72rem;
  color: var(--text-dim);
  display: flex;
  gap: 6px;
  margin-top: 2px;
}
.btn-continuar-acao {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}
.dash-aula-mini-card:hover .btn-continuar-acao {
  transform: scale(1.15);
  background: var(--primary);
  color: #fff;
}

/* Painel Para Revisar Hoje */
.revisar-alerta-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(236, 72, 153, 0.12));
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}
.revisar-numero-badge {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: #fbbf24;
  line-height: 1;
}
.revisar-amostra-lista {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}
.revisar-amostra-item {
  padding: 9px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  transition: border-color 0.2s;
}
.revisar-amostra-item:hover { border-color: var(--primary); }
.amostra-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}
.amostra-pergunta {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-main);
}

/* Grid de Disciplinas no Dashboard */
.dash-disciplinas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.dash-disc-card {
  padding: 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border-left: 4px solid var(--disc-cor, var(--primary));
}
.dash-disc-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  border-color: var(--disc-cor, var(--primary));
}
.disc-card-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.disc-card-icone {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}
.disc-badge-vencidos {
  background: #ef4444;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
}
.disc-card-nome {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}
.disc-card-prof {
  font-size: 0.74rem;
  color: var(--text-dim);
}
.disc-card-rodape {
  display: flex;
  gap: 10px;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 6px;
  border-top: 1px solid var(--border-light);
  padding-top: 8px;
}

/* Métricas da semana */
.metricas-grid-semana {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.metrica-quadro {
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}
.metrica-numero {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}
.metrica-legenda {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 4px;
}

/* ---- Biblioteca Aprimorada ---- */
.view-mode-toggle {
  display: inline-flex;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.view-mode-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.view-mode-btn.active {
  background: var(--primary);
  color: #fff;
}

.biblioteca-busca-linha {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.biblioteca-busca-linha .busca-wrapper {
  flex: 1;
  min-width: 260px;
}
.ordenacao-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ordenacao-rotulo {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 600;
}
.form-control-sm {
  padding: 7px 10px;
  font-size: 0.8rem;
}

.filtro-chips-barra {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}
.filtro-tags-extras {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.chip-extra {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--text-dim);
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.chip-extra:hover, .chip-extra.active {
  background: rgba(99, 102, 241, 0.18);
  border-color: var(--primary);
  color: var(--text-main);
}

/* Card de Aula Aprimorado com Hover Bar */
.aula-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
.aula-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.aula-card-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.aula-materia-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.aula-card-titulo {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.aula-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.74rem;
  color: var(--text-dim);
}
.aula-card-topicos {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.topico-chip-mini {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-muted);
}
.topico-chip-mais {
  font-size: 0.68rem;
  color: var(--text-dim);
}
.aula-card-recursos {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}
.recurso-pill {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
}

/* Hover Quick Actions Bar */
.aula-card-hover-bar {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--border-light);
  opacity: 0.85;
  transition: opacity 0.2s ease;
}
.aula-card:hover .aula-card-hover-bar {
  opacity: 1;
}
.btn-hover-acao {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 6px 4px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}
.btn-hover-acao:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-hover-acao.icon-only {
  flex: 0 0 32px;
}

/* Tabela de Aulas (Lista compacta) */
.tabela-aulas-container {
  border-radius: var(--radius-lg);
  overflow-x: auto;
}
.tabela-aulas {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.84rem;
}
.tabela-aulas th {
  padding: 12px 16px;
  color: var(--text-dim);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-light);
}
.tabela-aulas td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-main);
}
.tabela-aulas tbody tr {
  cursor: pointer;
  transition: background 0.15s ease;
}
.tabela-aulas tbody tr:hover {
  background: rgba(255, 255, 255, 0.05);
}
.materia-pill-mini {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
}

/* ---- Página Dedicada da Disciplina ---- */
.disciplina-corpo {
  padding: 20px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.disc-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.disc-stat-box {
  padding: 16px;
  border-radius: var(--radius-md);
  text-align: center;
  border-left: 3px solid var(--disc-cor, var(--primary));
}
.disc-stat-box .stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}
.disc-stat-box .stat-lbl {
  display: block;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-top: 4px;
}
.breadcrumbs-linha {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.breadcrumbs-linha a {
  color: var(--primary);
  text-decoration: none;
}
.breadcrumbs-linha a:hover { text-decoration: underline; }
.btn-voltar-topo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}
.btn-voltar-topo:hover {
  transform: translateX(-2px);
  border-color: var(--primary);
}

/* ---- Página Completa da Aula ---- */
.aula-detalhe-corpo {
  padding: 20px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 1200px;
  margin: 0 auto;
}

.aula-player-bar {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  margin: 0 24px;
}
.player-controles {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn-player-ctrl {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  border: none;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s;
}
.btn-player-ctrl:hover { transform: scale(1.08); }
.btn-player-skip {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  font-size: 0.72rem;
  padding: 4px 7px;
  border-radius: 6px;
  cursor: pointer;
}
.btn-player-skip:hover { color: var(--text-main); }
.player-tempo {
  font-size: 0.78rem;
  font-family: monospace;
  color: var(--text-muted);
}
.player-barra {
  flex: 1;
  accent-color: var(--primary);
  cursor: pointer;
}
.player-velocidade {
  display: flex;
  gap: 3px;
}
.btn-vel {
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 6px;
  border-radius: 4px;
  cursor: pointer;
}
.btn-vel.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Visão Geral da Aula */
.visao-geral-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 18px;
}
@media (max-width: 900px) {
  .visao-geral-grid { grid-template-columns: 1fr; }
}

.painel-radar, .painel-pontos-importantes, .painel-info-rapida, .painel-acoes-inteligentes {
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}
.radar-header, .pontos-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
  margin-bottom: 14px;
}
.radar-titulo-info, .pontos-titulo-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.radar-icone, .pontos-icone { font-size: 1.4rem; }
.radar-titulo-info h4, .pontos-titulo-info h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}
.radar-titulo-info p, .pontos-titulo-info p {
  font-size: 0.74rem;
  color: var(--text-dim);
}

.radar-barras-lista {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.radar-item-rotulo {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 4px;
}
.radar-badge-mencoes {
  font-size: 0.7rem;
  color: var(--primary);
  font-weight: 600;
}
.radar-trilho {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}
.radar-preenchimento {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 4px;
  transition: width 0.4s ease;
}

.ponto-importante-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  cursor: pointer;
  transition: transform 0.15s ease;
}
.ponto-importante-item:hover { transform: translateX(3px); }
.ponto-importante-item.nivel-alto {
  background: rgba(245, 158, 11, 0.12);
  border-left: 3px solid #f59e0b;
}
.ponto-importante-item.nivel-medio {
  background: rgba(99, 102, 241, 0.12);
  border-left: 3px solid var(--primary);
}
.ponto-item-topo {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.ponto-motivo { color: #fbbf24; }
.ponto-tempo { color: var(--primary); }
.ponto-texto {
  font-size: 0.84rem;
  color: var(--text-main);
  line-height: 1.4;
}

.ficha-tecnica-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}
.tecnica-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.tecnica-item span { color: var(--text-dim); }
.tecnica-item strong { color: var(--text-main); }

.acoes-ia-botoes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 12px;
}
.btn-acao-ia {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
}
.btn-acao-ia:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.15);
  transform: translateY(-2px);
}
.btn-acao-ia span { font-size: 1.2rem; }
.btn-acao-ia strong { display: block; font-size: 0.82rem; }
.btn-acao-ia small { display: block; font-size: 0.68rem; color: var(--text-dim); }

/* Transcrição Interativa */
.transcricao-topo-barra {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  align-items: center;
  margin-bottom: 14px;
}
.transcricao-filtros-rapidos {
  display: flex;
  gap: 6px;
}
.btn-filtro-tr {
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.btn-filtro-tr.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.aula-transcricao-stream {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tr-linha-interativa {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  position: relative;
}
.tr-linha-interativa:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(99, 102, 241, 0.35);
}
.tr-linha-interativa.trecho-tocando {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.18);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.2);
}
.tr-tempo-btn {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary);
  font-family: monospace;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.tr-tempo-btn:hover { transform: scale(1.08); }
.tr-texto-conteudo {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-main);
}
.tr-destaque-badge {
  position: absolute;
  right: 12px;
  top: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Resumo & Tópicos */
.aula-resumo-conteudo {
  padding: 24px;
  border-radius: var(--radius-lg);
  font-size: 0.92rem;
  line-height: 1.7;
}
.topicos-nuvem {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}
.topico-card {
  padding: 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.2s;
}
.topico-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.topico-hash { font-size: 1.2rem; font-weight: 800; color: var(--primary); }
.topico-texto { display: block; font-size: 0.92rem; font-weight: 700; margin: 4px 0; }
.topico-acao { font-size: 0.72rem; color: var(--text-dim); }

.arquivos-grid-aula {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.arquivo-item-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
}
.arq-ico { font-size: 1.6rem; }
.arq-info { flex: 1; }
.arq-info strong { display: block; font-size: 0.9rem; }
.arq-info small { color: var(--text-dim); font-size: 0.75rem; }


.icone-anatopato {
  background: rgba(244, 63, 94, 0.15);
  border-color: rgba(244, 63, 94, 0.35);
}


.icone-questionario {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.35);
}