* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', 'Comic Sans MS', system-ui, sans-serif;
  background: linear-gradient(160deg, #f0f7ff 0%, #fef6ff 100%);
  color: #2d2d44;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header { text-align: center; padding: 28px 16px 10px; }
header h1 { font-size: 2rem; color: #4a3aff; }
.sub { color: #666; margin-top: 6px; }
main { flex: 1; max-width: 860px; width: 100%; margin: 0 auto; padding: 16px; }
footer { text-align: center; padding: 18px; color: #888; font-size: .85rem; }
footer a { color: #4a3aff; }
.hidden { display: none !important; }

/* home */
.nome-box {
  background: #fff; border-radius: 16px; padding: 18px 22px; margin: 16px auto 0;
  box-shadow: 0 3px 14px rgba(0,0,0,.06); max-width: 480px; text-align: center;
}
.nome-box label { font-weight: 700; display: block; margin-bottom: 8px; }
.nome-box input {
  width: 100%; border: 2px solid #cfc9ff; border-radius: 12px; padding: 10px 14px;
  font-size: 1.1rem; text-align: center; outline: none;
}
.nome-box input:focus { border-color: #4a3aff; }
.card-botoes { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.btn-fase2 { background: #ff7a00; }
#aluno-badge { font-weight: 700; color: #4a3aff; }
.q-figura { margin: 4px 0 14px; text-align: center; }

.cards { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin: 24px 0; }
.card {
  background: #fff; border-radius: 20px; padding: 28px 32px; text-align: center;
  box-shadow: 0 6px 24px rgba(74, 58, 255, .10); width: 300px;
}
.card-emoji { font-size: 3.4rem; }
.card h2 { margin: 8px 0 4px; }
.card-m1 h2 { color: #0aa14f; }
.card-m2 h2 { color: #e60480; }
.card p { color: #777; margin-bottom: 16px; }
.btn {
  border: none; border-radius: 999px; padding: 12px 26px; font-size: 1.05rem;
  font-weight: 700; cursor: pointer; color: #fff; transition: transform .1s;
}
.btn:hover { transform: scale(1.05); }
.btn-m1 { background: #0aa14f; }
.btn-m2 { background: #e60480; }
.btn-fin { background: #4a3aff; font-size: 1.15rem; }
.btn-cinza { background: #8a8aa0; }
.info { background: #fff; border-radius: 16px; padding: 18px 22px; box-shadow: 0 3px 14px rgba(0,0,0,.06); }
.info p { margin: 6px 0; }
#historico { margin-top: 22px; }
#historico h3 { color: #4a3aff; margin-bottom: 8px; }
.hist-item { background: #fff; border-radius: 10px; padding: 8px 14px; margin: 6px 0; box-shadow: 0 2px 8px rgba(0,0,0,.05); }

/* prova */
.prova-topo {
  position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; align-items: center;
  background: #fff; border-radius: 14px; padding: 12px 18px; margin-bottom: 16px;
  box-shadow: 0 3px 12px rgba(0,0,0,.10); gap: 10px; flex-wrap: wrap;
}
.badge { border-radius: 999px; padding: 4px 14px; font-weight: 700; color: #fff; font-size: .85rem; }
.badge-m1 { background: #0aa14f; }
.badge-m2 { background: #e60480; }
#timer { font-weight: 700; font-variant-numeric: tabular-nums; }
#timer.alerta { color: #d40000; animation: pisca 1s infinite; }
@keyframes pisca { 50% { opacity: .4; } }

.questao {
  background: #fff; border-radius: 16px; padding: 20px 22px; margin-bottom: 18px;
  box-shadow: 0 3px 14px rgba(0,0,0,.06);
}
.q-num { font-weight: 800; color: #4a3aff; margin-bottom: 8px; }
.q-texto { line-height: 1.55; margin-bottom: 14px; white-space: normal; font-size: 1.05rem; }
.opcoes { display: flex; flex-direction: column; gap: 8px; }
.opcao {
  display: flex; align-items: center; gap: 10px; border: 2px solid #e4e4f2; border-radius: 12px;
  padding: 10px 14px; cursor: pointer; transition: background .15s, border-color .15s;
}
.opcao:hover { background: #f4f2ff; border-color: #b9b0ff; }
.opcao input { accent-color: #4a3aff; width: 18px; height: 18px; }
.opcao .letra {
  background: #ecebff; color: #4a3aff; font-weight: 800; border-radius: 50%;
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.opcao.travada { cursor: default; }
.opcao.correta { border-color: #0aa14f; background: #e8f9ef; }
.opcao.correta .letra { background: #0aa14f; color: #fff; }
.opcao.errada { border-color: #d40000; background: #ffecec; }
.opcao.errada .letra { background: #d40000; color: #fff; }
.feedback { margin-top: 12px; border-radius: 10px; padding: 10px 14px; line-height: 1.5; }
.fb-certo { background: #e8f9ef; color: #085c2e; }
.fb-errado { background: #fff4e5; color: #7a4a00; }

.acoes { text-align: center; margin: 24px 0; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* resultado */
#resultado { background: #fff; border-radius: 20px; padding: 28px; text-align: center; box-shadow: 0 6px 24px rgba(74,58,255,.12); }
.res-emoji { font-size: 3.6rem; }
.res-placar { font-size: 2.2rem; font-weight: 800; color: #4a3aff; margin: 6px 0; }
.res-msg { font-size: 1.15rem; margin-bottom: 4px; }
.res-tempo { color: #888; margin-bottom: 10px; }

@media (max-width: 560px) {
  header h1 { font-size: 1.5rem; }
  .card { width: 100%; }
}