/* ==========================================================
   Componentes reutilizáveis
   ========================================================== */

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--raio-sm);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--rapido) var(--easing), border-color var(--rapido) var(--easing), transform var(--rapido) var(--easing), box-shadow var(--rapido) var(--easing);
  user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn-lg { height: 46px; padding: 0 20px; font-size: 15px; }
.btn-bloco { width: 100%; }

.btn-primario { background: var(--cor-primaria); color: #fff; box-shadow: var(--sombra-sm); }
.btn-primario:hover { background: var(--cor-primaria-hover); }

.btn-secundario { background: var(--cor-card); color: var(--cor-texto); border-color: var(--cor-borda); }
.btn-secundario:hover { border-color: #CBD2DC; background: #FBFCFE; }

.btn-fantasma { background: transparent; color: var(--cor-texto-secundario); }
.btn-fantasma:hover { background: var(--cor-neutro-bg); color: var(--cor-texto); }

.btn-perigo { background: transparent; color: var(--cor-perigo); }
.btn-perigo:hover { background: var(--cor-perigo-bg); }

.btn-perigo-solido { background: var(--cor-perigo); color: #fff; }
.btn-perigo-solido:hover { background: #C22020; }

.btn-icone { width: 36px; height: 36px; padding: 0; border-radius: 10px; background: transparent; color: var(--cor-texto-secundario); border: 1px solid transparent; }
.btn-icone:hover { background: var(--cor-neutro-bg); color: var(--cor-texto); }
.btn-icone.sm { width: 30px; height: 30px; border-radius: 8px; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

/* ---------- Cards ---------- */
.card {
  background: var(--cor-card);
  border: 1px solid var(--cor-borda);
  border-radius: var(--raio);
  box-shadow: var(--sombra-sm);
}
.card-pad { padding: 24px; }

/* ---------- Badges / status ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--raio-pill);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}
.badge-ponto { width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.badge-sucesso { background: var(--cor-sucesso-bg); color: var(--cor-sucesso); }
.badge-atencao { background: var(--cor-atencao-bg); color: var(--cor-atencao); }
.badge-perigo { background: var(--cor-perigo-bg); color: var(--cor-perigo); }
.badge-neutro { background: var(--cor-neutro-bg); color: var(--cor-texto-secundario); }
.badge-tracejado { background: transparent; border: 1px dashed #C3C9D3; color: var(--cor-texto-secundario); }
.badge-azul { background: var(--cor-azul-claro); color: var(--cor-primaria-hover); }

/* ---------- Formulários ---------- */
.campo { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.campo:last-child { margin-bottom: 0; }
.campo label { font-size: 13px; font-weight: 600; color: var(--cor-texto); }
.campo .dica { font-size: 12px; color: var(--cor-texto-secundario); margin-top: -2px; }
.campo-linha { display: flex; gap: 14px; }
.campo-linha .campo { flex: 1; }

.entrada, select.entrada, textarea.entrada {
  width: 100%;
  height: 42px;
  padding: 0 14px;
  border-radius: var(--raio-sm);
  border: 1px solid var(--cor-borda);
  background: var(--cor-card);
  color: var(--cor-texto);
  font-size: 14px;
  font-family: var(--fonte);
  transition: border-color var(--rapido) var(--easing), box-shadow var(--rapido) var(--easing);
}
textarea.entrada { height: auto; padding: 12px 14px; resize: vertical; min-height: 84px; line-height: 1.5; }
.entrada:hover { border-color: #CBD2DC; }
.entrada:focus { outline: none; border-color: var(--cor-primaria); box-shadow: 0 0 0 3px var(--cor-azul-claro); }
.entrada::placeholder { color: #9CA3AF; }
select.entrada { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

.checkbox-linha { display: flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; }
.checkbox-linha input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--cor-primaria); border-radius: 6px; cursor: pointer; }

.upload-caixa {
  display: flex; align-items: center; gap: 12px;
  border: 1.5px dashed var(--cor-borda);
  border-radius: var(--raio-sm);
  padding: 14px;
  cursor: pointer;
  transition: border-color var(--rapido), background var(--rapido);
  background: #FBFCFE;
}
.upload-caixa:hover { border-color: var(--cor-primaria); background: var(--cor-azul-claro); }
.upload-caixa svg { color: var(--cor-primaria); flex-shrink: 0; }
.upload-caixa .txt strong { display: block; font-size: 13px; }
.upload-caixa .txt span { font-size: 12px; color: var(--cor-texto-secundario); }
.login-botoes-tipo { display:flex; flex-direction:column; gap:9px; }
.login-admin-ativo { margin-bottom:18px; padding:12px; border:1px solid var(--cor-borda); border-radius:var(--raio-sm); background:var(--cor-fundo); text-align:center; }
.login-admin-ativo span { display:block; margin-bottom:9px; font-size:12.5px; color:var(--cor-texto-secundario); }

/* ---------- Overlay + Modal ---------- */
.overlay {
  position: fixed; inset: 0;
  background: rgba(17, 24, 39, 0.44);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: 20px;
  opacity: 0;
  animation: apareceOverlay var(--medio) var(--easing) forwards;
}
@keyframes apareceOverlay { to { opacity: 1; } }

.modal {
  background: var(--cor-card);
  border-radius: 20px;
  box-shadow: var(--sombra-lg);
  width: 100%;
  max-width: 480px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  transform: translateY(8px) scale(0.98);
  opacity: 0;
  animation: apareceModal var(--medio) var(--easing) forwards;
}
.modal.modal-lg { max-width: 640px; }
@keyframes apareceModal { to { transform: translateY(0) scale(1); opacity: 1; } }

.modal-cabecalho { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--cor-borda); flex-shrink: 0; }
.modal-cabecalho h3 { font-size: 16px; }
.modal-corpo { padding: 24px; overflow-y: auto; }
.modal-rodape { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 24px; border-top: 1px solid var(--cor-borda); flex-shrink: 0; }

/* ---------- Painel lateral (drawer) — editor de aula ---------- */
.painel-fundo {
  position: fixed; inset: 0;
  background: rgba(17, 24, 39, 0.44);
  z-index: 100;
  opacity: 0;
  animation: apareceOverlay var(--medio) var(--easing) forwards;
}
.painel-lateral {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(880px, 100vw);
  background: var(--cor-fundo);
  box-shadow: var(--sombra-lg);
  display: flex; flex-direction: column;
  transform: translateX(24px);
  opacity: 0;
  animation: apareceLateral var(--medio) var(--easing) forwards;
}
@keyframes apareceLateral { to { transform: translateX(0); opacity: 1; } }
.painel-cabecalho { display: flex; align-items: center; justify-content: space-between; padding: 18px 28px; background: var(--cor-card); border-bottom: 1px solid var(--cor-borda); flex-shrink: 0; }
.painel-corpo { flex: 1; overflow-y: auto; padding: 28px; }
.painel-rodape { display: flex; justify-content: space-between; align-items: center; padding: 16px 28px; background: var(--cor-card); border-top: 1px solid var(--cor-borda); flex-shrink: 0; }

/* ---------- Toasts ---------- */
.toast-caixa { position: fixed; bottom: 24px; right: 24px; z-index: 300; display: flex; flex-direction: column; gap: 10px; }
.toast {
  display: flex; align-items: center; gap: 10px;
  background: #16202E; color: #fff;
  padding: 13px 18px; border-radius: 12px;
  font-size: 13px; font-weight: 500;
  box-shadow: var(--sombra-lg);
  transform: translateY(8px); opacity: 0;
  animation: apareceToast var(--medio) var(--easing) forwards;
  max-width: 360px;
}
.toast.sucesso svg { color: #4ADE80; }
.toast.erro svg { color: #F87171; }
.toast svg { flex-shrink: 0; width: 18px; height: 18px; }
@keyframes apareceToast { to { transform: translateY(0); opacity: 1; } }

/* ---------- Barra de progresso ---------- */
.barra-progresso { height: 6px; border-radius: var(--raio-pill); background: var(--cor-neutro-bg); overflow: hidden; }
.barra-progresso > div { height: 100%; background: var(--cor-primaria); border-radius: var(--raio-pill); transition: width var(--medio) var(--easing); }
.barra-progresso.fina { height: 4px; }

/* ---------- Estado vazio ---------- */
.vazio { text-align: center; padding: 64px 24px; color: var(--cor-texto-secundario); }
.vazio svg { width: 40px; height: 40px; margin: 0 auto 14px; color: #C3C9D3; }
.vazio strong { display: block; color: var(--cor-texto); font-size: 15px; margin-bottom: 4px; }
.vazio p { font-size: 13px; }

/* ---------- Spinner ---------- */
.spinner { width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid rgba(255,255,255,0.35); border-top-color: #fff; animation: girar 0.7s linear infinite; }
.spinner.escuro { border-color: rgba(17,24,39,0.15); border-top-color: var(--cor-primaria); }
@keyframes girar { to { transform: rotate(360deg); } }
.carregando-pagina { display: flex; align-items: center; justify-content: center; padding: 80px 0; }

/* ---------- Menu de ações (dropdown) ---------- */
.menu-acoes { position: relative; display: inline-block; }
.menu-acoes-lista {
  position: fixed;
  background: var(--cor-card); border: 1px solid var(--cor-borda);
  border-radius: 12px; box-shadow: var(--sombra-lg);
  min-width: 180px; padding: 6px; z-index: 300;
  opacity: 0; transform: translateY(-4px);
  transition: opacity var(--rapido) var(--easing), transform var(--rapido) var(--easing);
}
.menu-acoes-lista.aberto { opacity: 1; transform: translateY(0); }
.menu-acoes-lista button, .menu-acoes-lista a {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 9px 10px; border-radius: 8px; border: none; background: none;
  font-size: 13px; color: var(--cor-texto); cursor: pointer; text-align: left; text-decoration: none;
}
.menu-acoes-lista button:hover, .menu-acoes-lista a:hover { background: var(--cor-neutro-bg); }
.menu-acoes-lista button.perigo { color: var(--cor-perigo); }
.menu-acoes-lista button.perigo:hover { background: var(--cor-perigo-bg); }
.menu-acoes-lista svg { width: 15px; height: 15px; flex-shrink: 0; }
.menu-acoes-lista hr { border: none; border-top: 1px solid var(--cor-borda); margin: 6px 0; }

/* ---------- Tabela ---------- */
.campo-senha { position: relative; }
.campo-senha .entrada { padding-right: 44px; }
.btn-olho-senha {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 30px; height: 30px; display: flex; align-items: center; justify-content: center;
  background: none; border: none; cursor: pointer; color: var(--cor-texto-secundario); border-radius: 8px;
}
.btn-olho-senha:hover { background: var(--cor-fundo); color: var(--cor-texto); }
.btn-olho-senha svg { width: 17px; height: 17px; }

.tabela-caixa { overflow-x: visible; }
@media (max-width: 900px) {
  .tabela-caixa { overflow-x: auto; }
}
.tabela { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tabela th { text-align: left; padding: 12px 16px; color: var(--cor-texto-secundario); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; border-bottom: 1px solid var(--cor-borda); white-space: nowrap; }
.tabela td { padding: 14px 16px; border-bottom: 1px solid var(--cor-borda); vertical-align: middle; }
.tabela tr:last-child td { border-bottom: none; }
.tabela tr.linha-clicavel { cursor: pointer; transition: background var(--rapido); }
.tabela tr.linha-clicavel:hover { background: #FBFCFE; }

/* ---------- Avatar ---------- */
.avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--cor-azul-claro); color: var(--cor-primaria-hover); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; flex-shrink: 0; }

/* ---------- Utilitários ---------- */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; } .gap-10 { gap: 10px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.oculto { display: none !important; }
.texto-secundario { color: var(--cor-texto-secundario); }
.w-100 { width: 100%; }

/* ---------- Tela de login (compartilhada entre admin e aluno) ---------- */
.pagina-login {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  padding: 20px; background: var(--cor-fundo);
  background-image: radial-gradient(circle at 15% 15%, var(--cor-azul-claro) 0%, transparent 45%),
                     radial-gradient(circle at 85% 85%, var(--cor-azul-claro) 0%, transparent 40%);
}
.login-caixa { width: 100%; max-width: 380px; padding: 40px 36px; }
.login-marca { display: flex; justify-content: center; margin-bottom: 14px; }
.login-marca img { max-height: 36px; }
.login-marca-texto { font-size: 20px; font-weight: 800; letter-spacing: -0.02em; }
.login-subtitulo { text-align: center; color: var(--cor-texto-secundario); font-size: 13.5px; margin-bottom: 28px; }
.login-erro { background: var(--cor-perigo-bg); color: var(--cor-perigo); font-size: 13px; font-weight: 500; padding: 11px 14px; border-radius: 10px; margin-bottom: 18px; text-align: center; }
.login-rodape { text-align: center; margin-top: 20px; font-size: 12.5px; color: var(--cor-texto-secundario); }
.login-rodape a { color: var(--cor-primaria); font-weight: 600; }
.login-rodape a:hover { text-decoration: underline; }
.esqueci-link { display: block; text-align: center; margin-top: 16px; font-size: 12.5px; color: var(--cor-texto-secundario); }
.esqueci-link:hover { color: var(--cor-primaria); }

.login-anuncio-wrap { width: 100%; max-width: 640px; }

.anuncio-banner-wrap { margin-bottom: 22px; }
.anuncio-linha { display: flex; gap: 14px; width: 100%; }
.anuncio-linha-dupla .anuncio-arte { flex: 1 1 0; min-width: 0; }
.anuncio-arte {
  display: block; width: 100%; border-radius: var(--raio); overflow: hidden;
  background: var(--cor-neutro-bg); transition: opacity var(--rapido);
}
.anuncio-arte:hover { opacity: 0.94; }
.anuncio-arte img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 640px) {
  .anuncio-linha-dupla { flex-direction: column; }
  .anuncio-linha-dupla .anuncio-arte { height: auto !important; aspect-ratio: 16/9; }
}

.tooltip { position: relative; }
.tooltip::after {
  content: attr(data-dica);
  position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: #16202E; color: #fff; font-size: 11px; font-weight: 500;
  padding: 6px 10px; border-radius: 8px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity var(--rapido);
}
.tooltip:hover::after { opacity: 1; }