:root {
  --bg: #f6f1e7;
  --card: #fffdf8;
  --ink: #1d1f24;
  --muted: #6b6a66;
  --line: #e4dccb;
  --accent: #2f4bb3;
  --accent-ink: #ffffff;
  --accent-soft: #e5e9f8;
  --fr: #2f4bb3;
  --pt: #2c7a52;
  --good: #2c7a52;
  --good-soft: #e1f1e7;
  --warn: #a8670a;
  --warn-soft: #fbefd9;
  --bad: #b3372f;
  --bad-soft: #f8e3e1;
  --shadow: 0 1px 2px rgba(40, 30, 10, .06), 0 4px 16px rgba(40, 30, 10, .06);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16181d; --card: #1f2229; --ink: #ecebe6; --muted: #9a9a96; --line: #30343d;
    --accent: #7d93ff; --accent-ink: #10131a; --accent-soft: #262d48; --fr: #93a5ff; --pt: #6fcf9b;
    --good: #6fcf9b; --good-soft: #1d3228; --warn: #f0b45a; --warn-soft: #3a2e1a;
    --bad: #f08a80; --bad-soft: #3b2222; --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #16181d; --card: #1f2229; --ink: #ecebe6; --muted: #9a9a96; --line: #30343d;
  --accent: #7d93ff; --accent-ink: #10131a; --accent-soft: #262d48; --fr: #93a5ff; --pt: #6fcf9b;
  --good: #6fcf9b; --good-soft: #1d3228; --warn: #f0b45a; --warn-soft: #3a2e1a;
  --bad: #f08a80; --bad-soft: #3b2222; --shadow: none; color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 var(--sans);
  min-height: 100dvh;
}
a { color: var(--accent); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; margin: 0 0 .5rem; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 .75rem; }
button { font: inherit; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }

.topo {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; padding-top: max(10px, env(safe-area-inset-top));
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line);
}
.marca { font-family: var(--serif); font-size: 1.35rem; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: .01em; }
.topo-info { display: flex; gap: 8px; align-items: center; font-size: .82rem; color: var(--muted); }
.pill { display: inline-flex; align-items: center; gap: 4px; padding: 2px 9px; border-radius: 99px; background: var(--card); border: 1px solid var(--line); font-size: .78rem; color: var(--muted); white-space: nowrap; }
.pill.alerta { color: var(--bad); border-color: var(--bad); }

main { max-width: 760px; margin: 0 auto; padding: 16px 16px 120px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; box-shadow: var(--shadow); margin-bottom: 14px; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.stack > * + * { margin-top: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: 10px 16px; border-radius: 10px; font-weight: 600; text-decoration: none; min-height: 44px;
}
.btn:hover { border-color: var(--accent); }
.btn.primario { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.fantasma { background: transparent; }
.btn.pequeno { padding: 6px 10px; min-height: 34px; font-size: .88rem; }
.btn:disabled { opacity: .5; cursor: default; }
.icone { width: 40px; height: 40px; min-height: 0; padding: 0; border-radius: 99px; }

/* home */
.atalhos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 18px; }
.atalho { display: block; text-decoration: none; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px; box-shadow: var(--shadow); }
.atalho strong { display: block; font-family: var(--serif); font-size: 1.08rem; }
.atalho span { font-size: .84rem; color: var(--muted); }
.atalho.destaque { grid-column: 1 / -1; background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.atalho.destaque span { color: color-mix(in srgb, var(--accent-ink) 80%, transparent); }

.nivel { margin: 22px 0 8px; }
.nivel-cab { display: flex; align-items: baseline; gap: 10px; }
.nivel-cab .sigla { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.unidades { list-style: none; margin: 8px 0 0; padding: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--card); }
.unidades li + li { border-top: 1px solid var(--line); }
.unidades a { display: flex; gap: 12px; align-items: center; padding: 12px 14px; color: var(--ink); text-decoration: none; }
.unidades a:hover { background: var(--accent-soft); }
.num { font-variant-numeric: tabular-nums; color: var(--muted); font-size: .85rem; width: 2.2em; flex: none; }
.u-titulo { flex: 1; min-width: 0; }
.u-titulo small { display: block; color: var(--muted); font-size: .8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status { font-size: .74rem; padding: 2px 8px; border-radius: 99px; flex: none; }
.status.concluida { background: var(--good-soft); color: var(--good); }
.status.andamento { background: var(--warn-soft); color: var(--warn); }
.status.testado { background: var(--accent-soft); color: var(--accent); }
.status.embreve { color: var(--muted); border: 1px dashed var(--line); }

/* unidade */
.abas { display: flex; gap: 4px; overflow-x: auto; margin: 10px -16px 14px; padding: 0 16px; scrollbar-width: none; }
.abas button { flex: none; border: 1px solid var(--line); background: var(--card); color: var(--muted); padding: 8px 14px; border-radius: 99px; font-weight: 600; font-size: .9rem; }
.abas button[aria-selected="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.vocab { list-style: none; padding: 0; margin: 0; }
.vocab li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--line); }
.vocab .fr { font-weight: 600; color: var(--fr); }
.genero { font-size: .72rem; padding: 0 6px; border-radius: 6px; margin-left: 4px; vertical-align: 2px; }
.genero.m { background: var(--accent-soft); color: var(--accent); }
.genero.f { background: var(--bad-soft); color: var(--bad); }
.ex { font-size: .88rem; color: var(--muted); }
.ex i { color: var(--ink); font-style: normal; }

.tabela { border-collapse: collapse; margin: 8px 0 12px; font-size: .95rem; }
.tabela td { padding: 4px 14px 4px 0; border-bottom: 1px solid var(--line); }
.tabela td:first-child { color: var(--muted); }
.exemplos { list-style: none; padding: 0; margin: 8px 0; }
.exemplos li { display: flex; gap: 8px; align-items: center; padding: 4px 0; }
.armadilha { background: var(--warn-soft); border-left: 3px solid var(--warn); padding: 10px 12px; border-radius: 8px; font-size: .92rem; margin-top: 10px; }

.tocar { flex: none; width: 32px; height: 32px; border-radius: 99px; border: 1px solid var(--line); background: var(--card); color: var(--accent); display: inline-grid; place-items: center; padding: 0; }
.tocar svg { width: 14px; height: 14px; }
.tocar.tocando { background: var(--accent); color: var(--accent-ink); }

/* exercícios */
.barra { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 14px; }
.barra > div { height: 100%; background: var(--accent); transition: width .3s; }
.enunciado { color: var(--muted); font-size: .9rem; margin-bottom: 4px; }
.frase { font-family: var(--serif); font-size: 1.35rem; margin-bottom: 14px; }
.opcoes { display: grid; gap: 8px; }
.opcoes .btn { justify-content: flex-start; text-align: left; }
.opcoes .btn.certo { background: var(--good-soft); border-color: var(--good); }
.opcoes .btn.errado { background: var(--bad-soft); border-color: var(--bad); }
.campo { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); font-size: 1.05rem; }
.campo:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.fichas { display: flex; flex-wrap: wrap; gap: 6px; min-height: 48px; padding: 8px; border: 1px dashed var(--line); border-radius: 10px; margin-bottom: 10px; }
.ficha { border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 6px 10px; font-weight: 600; }
.feedback { margin-top: 14px; padding: 12px 14px; border-radius: 10px; }
.feedback.certo { background: var(--good-soft); }
.feedback.quase { background: var(--warn-soft); }
.feedback.errado { background: var(--bad-soft); }
.feedback strong { display: block; }
.acentos { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 8px; }
.acentos button { border: 1px solid var(--line); background: var(--card); border-radius: 6px; width: 34px; height: 34px; padding: 0; }

/* palco (voz) */
.palco { display: flex; flex-direction: column; min-height: calc(100dvh - 140px); padding-bottom: 60px; }
.palco-cab { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.falas { flex: 1; display: flex; flex-direction: column; gap: 12px; padding-bottom: 12px; }
.bolha { max-width: 92%; padding: 12px 14px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.bolha.prof { align-self: flex-start; border-bottom-left-radius: 4px; }
.bolha.aluno { align-self: flex-end; background: var(--accent-soft); border-color: transparent; border-bottom-right-radius: 4px; }
.linha { display: flex; gap: 8px; align-items: flex-start; padding: 3px 0; }
.linha .txt { flex: 1; }
.linha.fr .txt { color: var(--fr); font-weight: 500; }
.linha .trad { display: block; color: var(--muted); font-size: .86rem; font-weight: 400; filter: blur(4px); cursor: pointer; transition: filter .2s; user-select: none; }
.linha .trad.visivel { filter: none; user-select: auto; }
.mostrar-trad .linha .trad { filter: none; }
em.fr { color: var(--fr); font-style: normal; font-weight: 600; }
.correcoes { align-self: flex-end; max-width: 92%; display: grid; gap: 6px; }
.correcao { background: var(--warn-soft); border-radius: 10px; padding: 8px 12px; font-size: .9rem; }
.correcao s { color: var(--bad); }
.correcao b { color: var(--good); }
.digitando { color: var(--muted); font-size: .9rem; }
.digitando::after { content: "…"; animation: piscar 1s infinite; }
@keyframes piscar { 50% { opacity: .2; } }
.fim-banner { background: var(--good-soft); border-radius: 14px; padding: 14px; text-align: center; }

.controles {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  padding: 10px 16px; padding-bottom: max(10px, env(safe-area-inset-bottom));
}
.controles-in { max-width: 760px; margin: 0 auto; display: flex; align-items: center; gap: 10px; }
.mic {
  width: 72px; height: 72px; border-radius: 99px; border: none; flex: none;
  background: var(--accent); color: var(--accent-ink); display: grid; place-items: center;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 40%, transparent);
  touch-action: none; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
}
.mic svg { width: 30px; height: 30px; }
.mic.gravando { background: var(--bad); animation: pulsar 1.2s infinite; }
.mic:disabled { opacity: .5; }
@keyframes pulsar { 50% { box-shadow: 0 0 0 12px color-mix(in srgb, var(--bad) 20%, transparent); } }
.seletor { display: inline-flex; border: 1px solid var(--line); border-radius: 99px; overflow: hidden; background: var(--card); }
.seletor button { border: none; background: none; padding: 6px 10px; font-size: .8rem; font-weight: 600; color: var(--muted); }
.seletor button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.lado { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.digitar { display: flex; gap: 8px; flex: 1; }
.digitar input { flex: 1; min-width: 0; }
.dica-mic { font-size: .78rem; color: var(--muted); text-align: center; }

/* revisão */
.flash { text-align: center; padding: 28px 16px; }
.flash .frente { font-family: var(--serif); font-size: 1.5rem; }
.flash .verso { font-family: var(--serif); font-size: 1.4rem; color: var(--fr); margin-top: 14px; }
.notas { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 18px; }
.notas .btn { padding: 8px 4px; font-size: .86rem; flex-direction: column; gap: 0; }
.notas .btn small { font-weight: 400; color: var(--muted); font-size: .72rem; }

.login { max-width: 360px; margin: 12vh auto 0; }
.erro-msg { color: var(--bad); font-size: .9rem; }
.centro { text-align: center; }
.vazio { text-align: center; padding: 30px 10px; color: var(--muted); }

@media (min-width: 640px) {
  .atalhos { grid-template-columns: repeat(4, 1fr); }
  .atalho.destaque { grid-column: span 2; }
  h1 { font-size: 2rem; }
}