/* ==========================================================================
   Plataforma de Provas — estilos
   Conceito visual: cartão-resposta. As alternativas são "bolhas" que se
   preenchem ao marcar; a barra de progresso muda de cor conforme a prova avança.
   Sem fontes externas e sem estilos inline (compatível com CSP estrita).
   ========================================================================== */
:root {
  --bg: #f2f5fb; --card: #ffffff; --tx: #16203a; --mut: #5b6a86; --bd: #dbe1ee; --bd2: #c6cee2;
  --pri: #2f4bd8; --pri-d: #2239b4; --pri-s: #e7ebff; --on-pri: #ffffff;
  --ok: #107a57; --ok-s: #dff4ea; --warn: #9a5700; --warn-s: #fff0d1; --err: #b3261e; --err-s: #fde6e3; --info: #0a6b96; --info-s: #dff2fa;
  --sombra: 0 1px 2px rgba(20,32,70,.06), 0 4px 14px rgba(20,32,70,.06);
  --r: 12px; --fonte: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
:root[data-tema="escuro"] {
  --bg: #0d1322; --card: #151d33; --tx: #e7ebf6; --mut: #9aa6c2; --bd: #27314d; --bd2: #36425f;
  --pri: #7f95ff; --pri-d: #a3b2ff; --pri-s: #1e2a58; --on-pri: #0b1130;
  --ok: #4cd6a0; --ok-s: #12362a; --warn: #f2b45a; --warn-s: #3a2c10; --err: #ff8a80; --err-s: #3d1a18; --info: #6cc8f0; --info-s: #10303f;
  --sombra: 0 1px 2px rgba(0,0,0,.4), 0 4px 14px rgba(0,0,0,.3);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--fonte); font-size: 16px; line-height: 1.55; color: var(--tx); background: var(--bg); min-height: 100vh; display: flex; flex-direction: column; }
body.travado { overflow: hidden; }
#app { flex: 1; width: 100%; }
#rodape { text-align: center; padding: 14px 12px 18px; font-size: 13px; color: var(--mut); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h2 { font-size: 1.6rem; } h3 { font-size: 1.15rem; } h4 { font-size: 1rem; }
p { margin: 0 0 .9em; }
a { color: var(--pri); text-underline-offset: 3px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; background: var(--pri-s); padding: .1em .4em; border-radius: 6px; }
small { font-size: .85em; }
.muted { color: var(--mut); }
.oculto { display: none !important; }
.noscript { padding: 20px; text-align: center; }
:focus-visible { outline: 3px solid var(--pri); outline-offset: 2px; border-radius: 6px; }
.tela-carga { display: grid; place-items: center; min-height: 60vh; }
.spin { display: inline-block; width: 18px; height: 18px; border: 3px solid var(--bd2); border-top-color: var(--pri); border-radius: 50%; animation: gira .8s linear infinite; vertical-align: -3px; }
@keyframes gira { to { transform: rotate(360deg); } }
.vazio { text-align: center; padding: 28px 12px; }

/* ---------- botões e campos ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 16px; border-radius: 10px; border: 1px solid var(--bd2);
  background: var(--card); color: var(--tx); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; transition: background-color .15s, border-color .15s; }
.btn:hover:not(:disabled) { border-color: var(--pri); background: var(--pri-s); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--pri); border-color: var(--pri); color: var(--on-pri); }
.btn.primary:hover:not(:disabled) { background: var(--pri-d); border-color: var(--pri-d); }
.btn.danger { background: transparent; border-color: var(--err); color: var(--err); }
.btn.danger:hover:not(:disabled) { background: var(--err-s); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--tx); }
.btn.ghost:hover:not(:disabled) { background: var(--pri-s); border-color: transparent; }
.btn.sm { min-height: 32px; padding: 4px 10px; font-size: .88rem; border-radius: 8px; }
.btn.grande { min-height: 48px; font-size: 1.05rem; width: 100%; }
.btn.aviso-on { background: var(--warn-s); border-color: var(--warn); color: var(--warn); }
.acoes-linha { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
.acoes-col { display: grid; gap: 10px; margin-top: 14px; }
.field { display: grid; gap: 6px; margin: 0 0 14px; border: 0; padding: 0; min-width: 0; }
.field > span, .field > legend { font-weight: 600; font-size: .93rem; }
.field.narrow { max-width: 440px; }
input, select, textarea { width: 100%; min-height: 42px; padding: 9px 12px; font: inherit; color: var(--tx); background: var(--card); border: 1px solid var(--bd2); border-radius: 10px; }
textarea { resize: vertical; }
input[type="checkbox"], input[type="radio"] { width: 18px; height: 18px; min-height: 0; accent-color: var(--pri); flex: none; }
input[type="file"] { padding: 8px; }
input[type="search"] { -webkit-appearance: none; appearance: none; }
.check, .radio { display: flex; gap: 10px; align-items: flex-start; margin: 6px 0; cursor: pointer; }
.senha-wrap { display: flex; gap: 8px; align-items: center; }
.erro { color: var(--err); min-height: 1.3em; font-weight: 600; font-size: .93rem; }
.form-col { max-width: 520px; }
.grid2, .grid3, .grid4 { display: grid; gap: 14px; margin-bottom: 4px; }
.grid2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .grid4 { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 16px; }

/* ---------- cartões, selos, tabelas ---------- */
.card { background: var(--card); border: 1px solid var(--bd); border-radius: var(--r); padding: 18px 20px; margin-bottom: 16px; box-shadow: var(--sombra); }
.card-cab, .pg-cab, .prova-cab, .q-cab, .med-cab { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.pg-cab { margin-bottom: 8px; }
.sec { margin: 22px 0 10px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 700; background: var(--pri-s); color: var(--pri); border: 1px solid transparent; white-space: nowrap; }
.badge.ok { background: var(--ok-s); color: var(--ok); } .badge.err { background: var(--err-s); color: var(--err); }
.badge.warn { background: var(--warn-s); color: var(--warn); } .badge.info { background: var(--info-s); color: var(--info); }
.stat { background: var(--card); border: 1px solid var(--bd); border-radius: var(--r); padding: 14px 16px; display: grid; gap: 2px; }
.stat .n { font-size: 1.9rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.stat .r { color: var(--mut); font-size: .9rem; }
.tabela-wrap { overflow-x: auto; border: 1px solid var(--bd); border-radius: 10px; margin-bottom: 12px; background: var(--card); }
.tbl { width: 100%; border-collapse: collapse; font-size: .93rem; }
.tbl th { text-align: left; font-weight: 700; padding: 10px 12px; background: var(--pri-s); white-space: nowrap; }
.tbl td { padding: 9px 12px; border-top: 1px solid var(--bd); vertical-align: middle; }
.tbl tr.eu td { background: var(--pri-s); font-weight: 600; }
.tbl tr.alerta-linha td { background: var(--err-s); }
.acoes-tab { display: flex; flex-wrap: wrap; gap: 6px; }
.aviso-box { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; background: var(--warn-s); color: var(--tx); border: 1px solid var(--warn); border-radius: 10px; padding: 12px 16px; margin: 0 0 16px; }
.dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; } .dl dt { font-weight: 700; } .dl dd { margin: 0; }
.meta { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 16px; padding: 0; margin: 8px 0; color: var(--mut); font-size: .92rem; }
.meta.col { flex-direction: column; }
.filtros { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.paginacao { display: flex; gap: 12px; align-items: center; justify-content: center; margin: 12px 0; }
.lista-erros { margin: 6px 0 0; padding-left: 20px; color: var(--err); }
.codigo-grande { font-size: 2rem; text-align: center; letter-spacing: .15em; margin: 12px 0; }
.codigo-grande code { padding: .2em .6em; }

/* ---------- barras (progresso da prova, medidores, estatísticas) ---------- */
.bar { --bar-c: #d64545; position: relative; height: 12px; border-radius: 999px; background: var(--bd); overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--bar-c); transition: width .45s ease, background-color .45s ease; }
.bar[data-n="0"] { --bar-c: #d64545; } .bar[data-n="1"] { --bar-c: #e8892b; } .bar[data-n="2"] { --bar-c: #d9a81c; }
.bar[data-n="3"] { --bar-c: #5fb53b; } .bar[data-n="4"] { --bar-c: #12a05f; }
.bar.mini { height: 8px; min-width: 90px; margin-bottom: 2px; }
.medidor { margin: 10px 0; }

/* ---------- login ---------- */
.login { min-height: 82vh; display: grid; place-items: center; padding: 20px 14px; }
.login-card { width: 100%; max-width: 420px; background: var(--card); border: 1px solid var(--bd); border-radius: 16px; padding: 28px 26px; box-shadow: var(--sombra); }
.login-marca { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.login-marca h1 { font-size: 1.4rem; margin: 0; }
.logo { width: 38px; height: 38px; color: var(--pri); flex: none; }
.login-rodape { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; }

/* ---------- painel do aluno ---------- */
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 10px 20px; background: var(--card); border-bottom: 1px solid var(--bd); }
.marca { font-weight: 800; letter-spacing: -.01em; }
.nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.nav a { padding: 8px 14px; border-radius: 10px; color: var(--tx); text-decoration: none; font-weight: 600; white-space: nowrap; }
.nav a:hover { background: var(--pri-s); } .nav a.on { background: var(--pri); color: var(--on-pri); }
.topo-dir { display: flex; align-items: center; gap: 8px; } .quem { font-size: .9rem; color: var(--mut); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conteudo { max-width: 1040px; margin: 0 auto; padding: 24px 20px 12px; }
.resultado.ok { border-left: 6px solid var(--ok); } .resultado.err { border-left: 6px solid var(--err); }
.nota-grande { display: flex; align-items: baseline; gap: 8px; margin: 6px 0; } .nota-grande span { font-size: 3.4rem; font-weight: 800; letter-spacing: -.03em; } .nota-grande small { color: var(--mut); font-size: 1rem; }
.instr { background: var(--info-s); border-radius: 10px; padding: 10px 14px; margin: 10px 0; }

/* ---------- execução da prova (cartão-resposta) ---------- */
.prova-wrap { max-width: 860px; margin: 0 auto; padding: 0 16px 24px; }
.prova-topo { position: sticky; top: 0; z-index: 15; background: var(--bg); padding: 12px 0 10px; display: grid; grid-template-columns: 1fr auto; gap: 8px 14px; border-bottom: 1px solid var(--bd); }
.prova-titulo { display: grid; } .prova-info { display: flex; gap: 10px; align-items: center; }
.prova-prog { grid-column: 1 / -1; display: grid; gap: 4px; }
.cron { font-variant-numeric: tabular-nums; font-weight: 800; font-size: 1.15rem; padding: 4px 12px; border-radius: 999px; background: var(--ok-s); color: var(--ok); }
.cron[data-n="alerta"] { background: var(--warn-s); color: var(--warn); }
.cron[data-n="crit"] { background: var(--err-s); color: var(--err); animation: pulsa 1s ease-in-out infinite; }
@keyframes pulsa { 50% { opacity: .55; } }
.questao { background: var(--card); border: 1px solid var(--bd); border-radius: var(--r); padding: 20px; margin-top: 16px; box-shadow: var(--sombra); }
.q-num { font-weight: 700; color: var(--mut); }
.enun { font-size: 1.1rem; line-height: 1.6; margin: 12px 0; max-width: 72ch; }
.q-img { display: block; max-width: 100%; max-height: 380px; border-radius: 10px; border: 1px solid var(--bd); margin: 10px 0; cursor: zoom-in; background: #fff; }
.q-img.zoom { max-height: 78vh; cursor: default; margin: 0 auto; }
.alts { display: grid; gap: 10px; margin: 14px 0; }
.alt { display: flex; align-items: flex-start; gap: 14px; text-align: left; width: 100%; padding: 12px 14px; font: inherit; color: var(--tx); background: var(--card);
  border: 2px solid var(--bd2); border-radius: 12px; cursor: pointer; transition: border-color .15s, background-color .15s; }
div.alt { cursor: default; }
button.alt:hover { border-color: var(--pri); background: var(--pri-s); }
.bolha { flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; border: 2px solid var(--bd2); background: var(--card); transition: background-color .15s, color .15s, border-color .15s; }
.alt.sel { border-color: var(--pri); background: var(--pri-s); } .alt.sel .bolha { background: var(--pri); border-color: var(--pri); color: var(--on-pri); }
.alt .txt { padding-top: 4px; flex: 1; }
.alt.certa { border-color: var(--ok); background: var(--ok-s); } .alt.certa .bolha { background: var(--ok); border-color: var(--ok); color: #fff; }
.alt.errada { border-color: var(--err); background: var(--err-s); } .alt.errada .bolha { background: var(--err); border-color: var(--err); color: #fff; }
.tag { align-self: center; font-size: .78rem; font-weight: 800; padding: 2px 8px; border-radius: 999px; background: var(--card); border: 1px solid currentColor; }
.alt.certa .tag { color: var(--ok); } .alt.errada .tag { color: var(--err); }
.q-acoes { display: flex; justify-content: flex-end; }
.q-nav { display: flex; justify-content: space-between; gap: 10px; margin: 16px 0; }
.mapa { display: flex; flex-wrap: wrap; gap: 8px; }
.m { width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--bd2); background: var(--card); color: var(--tx); font: inherit; font-weight: 700; cursor: pointer; display: inline-grid; place-items: center; padding: 0; }
.m.ok { background: var(--pri); border-color: var(--pri); color: var(--on-pri); }
.m.rev { box-shadow: 0 0 0 3px var(--warn-s), 0 0 0 5px var(--warn); }
.m.atual { outline: 3px solid var(--tx); outline-offset: 2px; }
.legenda { margin-top: 14px; font-size: .85rem; }
.legenda .m { width: 14px; height: 14px; cursor: default; vertical-align: middle; margin: 0 4px 0 10px; }
.comentario { background: var(--info-s); border-radius: 10px; padding: 10px 14px; margin-top: 10px; }
.rev.ok { border-left: 6px solid var(--ok); } .rev.err { border-left: 6px solid var(--err); }

/* ---------- painel admin ---------- */
.admin { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.lateral { position: sticky; top: 0; align-self: start; height: 100vh; display: flex; flex-direction: column; gap: 6px; padding: 18px 12px; background: var(--card); border-right: 1px solid var(--bd); overflow-y: auto; }
.lateral .marca { padding: 4px 10px 14px; display: grid; } .lateral .marca small { color: var(--mut); font-weight: 600; }
.lateral nav { display: grid; gap: 4px; }
.lateral nav a { padding: 10px 12px; border-radius: 10px; color: var(--tx); text-decoration: none; font-weight: 600; }
.lateral nav a:hover { background: var(--pri-s); } .lateral nav a.on { background: var(--pri); color: var(--on-pri); }
.lateral-rodape { margin-top: auto; display: flex; gap: 8px; }
.lateral-fundo { display: none; }
.admin-main { min-width: 0; } .admin-topo { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 20px; border-bottom: 1px solid var(--bd); background: var(--card); }
.menu-btn { display: none; }
.admin .conteudo { max-width: 1180px; margin: 0; }
.abas { display: flex; gap: 4px; border-bottom: 2px solid var(--bd); margin: 14px 0; overflow-x: auto; }
.abas button { background: none; border: 0; padding: 10px 16px; font: inherit; font-weight: 700; color: var(--mut); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px; white-space: nowrap; }
.abas button.on { color: var(--pri); border-bottom-color: var(--pri); }
.alt-edit { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.alt-edit .radio { margin: 0; } .alt-edit .bolha { cursor: pointer; }
.alt-edit input[type=radio]:checked + .bolha { background: var(--pri); border-color: var(--pri); color: var(--on-pri); }
.alt-edit .radio input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.prev-box { display: flex; gap: 14px; align-items: flex-start; margin-top: 8px; flex-wrap: wrap; } .prev-box .q-img { max-height: 160px; margin: 0; }
.duas-colunas { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lista-q { max-height: 440px; overflow-y: auto; border: 1px solid var(--bd); border-radius: 10px; padding: 6px; background: var(--bg); }
.item-q { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; background: var(--card); margin-bottom: 6px; border: 1px solid var(--bd); }
.item-q small { display: block; } .acoes-mini { display: flex; gap: 4px; flex: none; }
.sticky { position: sticky; bottom: 0; background: var(--bg); padding: 12px 0; border-top: 1px solid var(--bd); }

/* ---------- janelas, avisos e bloqueio de versão ---------- */
.modal-bg { position: fixed; inset: 0; z-index: 100; background: rgba(8,12,28,.55); display: flex; align-items: center; justify-content: center; padding: 14px; overflow-y: auto; }
.modal { width: 100%; max-width: 560px; max-height: calc(100vh - 28px); display: flex; flex-direction: column; background: var(--card); color: var(--tx); border: 1px solid var(--bd); border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.modal.largo { max-width: 940px; }
.modal header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px 8px; } .modal header h3 { margin: 0; }
.modal .x { background: none; border: 0; font-size: 1.7rem; line-height: 1; cursor: pointer; color: var(--mut); padding: 0 6px; border-radius: 8px; }
.modal .corpo { padding: 8px 20px 12px; overflow-y: auto; }
.modal .acoes { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; padding: 12px 20px 18px; border-top: 1px solid var(--bd); }
#toasts { position: fixed; z-index: 200; left: 50%; bottom: 20px; transform: translateX(-50%); display: grid; gap: 8px; width: min(92vw, 460px); pointer-events: none; }
.toast { pointer-events: auto; padding: 12px 16px; border-radius: 12px; background: var(--tx); color: var(--bg); font-weight: 600; box-shadow: 0 8px 24px rgba(0,0,0,.3); transition: opacity .3s, transform .3s; }
.toast.ok { background: var(--ok); color: #fff; } .toast.err { background: var(--err); color: #fff; } .toast.warn { background: #b86e00; color: #fff; }
.toast.sai { opacity: 0; transform: translateY(8px); }
.bloqueio { position: fixed; inset: 0; z-index: 9999; background: rgba(8,12,28,.88); display: grid; place-items: center; padding: 20px; }
.bloqueio-card { max-width: 440px; width: 100%; background: var(--card); color: var(--tx); border-radius: 16px; padding: 28px; text-align: center; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.bloqueio-card .aviso { background: var(--warn-s); border-radius: 10px; padding: 10px; }

/* ---------- telas pequenas ---------- */
@media (max-width: 880px) {
  .grid4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid3, .duas-colunas, .filtros { grid-template-columns: 1fr; }
  .admin { grid-template-columns: 1fr; } .menu-btn { display: inline-flex; }
  .lateral { position: fixed; z-index: 60; left: 0; top: 0; width: 270px; transform: translateX(-102%); transition: transform .25s; }
  .admin.menu-aberto .lateral { transform: none; box-shadow: 0 0 40px rgba(0,0,0,.4); }
  .admin.menu-aberto .lateral-fundo { display: block; position: fixed; inset: 0; z-index: 50; background: rgba(8,12,28,.5); }
}
@media (max-width: 560px) {
  .grid2 { grid-template-columns: 1fr; } .conteudo { padding: 16px 12px; } .topbar { padding: 8px 12px; gap: 8px; }
  .questao { padding: 14px; } .enun { font-size: 1.02rem; } .quem { display: none; } .nota-grande span { font-size: 2.8rem; }
  .modal .acoes .btn { flex: 1; } .m { width: 36px; height: 36px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }
@media print { .topbar, .lateral, #rodape, .btn, .acoes-linha { display: none !important; } body { background: #fff; } }