:root {
  --bg: #f6f7fb;
  --card: #fff;
  --text: #111827;
  --muted: #6b7280;
  --ok: #16a34a;
  --bad: #dc2626;
  --blue: #2563eb;
  --shadow: 0 10px 30px rgba(0, 0, 0, .10);
  --radius: 16px;
  --dot: 22px;
  /* Aumentei um pouco o tamanho */
  --dotGap: 10px;
  --stageMinH: 90px;
  --zoneMinH: 92px;
  --titleSize: 18px;
  --questionSize: 38px;
  --avatarSize: 280px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

h2 {
  margin-top: -65px;
}

p {
  margin-top: -20px;
}

.app {
  width: min(1000px, 100%);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

header {
  padding: 16px 18px;
  border-bottom: 1px solid #eef2ff;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

header h1 {
  margin: 0;
  font-size: var(--titleSize);
}

header p {
  margin: 4px 0 0 0;
  color: var(--muted);
  font-size: 13px;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 10px 16px;
  font-weight: 900;
  cursor: pointer;
}

.btn-reset {
  background: #e5e7eb;
  color: #111827;
  position: absolute;
  top: 65px;
  right: 15px;
  width: 65px;
  height: 40px;
}

.btn-hint {
  background: #111827;
  color: #fff;
}

.btn-next {
  background: var(--blue);
  color: #fff;
}

.btn-hint,
.btn-next {
  min-width: 150px;
}

.btn:disabled {
  opacity: .4;
  cursor: not-allowed;
}

.content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 18px;
}

.card {
  border: 1px solid #eef2ff;
  border-radius: var(--radius);
  padding: 16px;
}

.zones {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.zone {
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: 14px;
  padding: 12px;
  min-height: var(--zoneMinH);
  position: relative;
}

.zoneTitle {
  position: absolute;
  top: 8px;
  left: 10px;
  font-size: 11px;
  font-weight: 900;
  color: #94a3b8;
  text-transform: uppercase;
}

.dots {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.units {
  display: flex;
  flex-wrap: wrap;
  gap: var(--dotGap);
}

.bar {
  display: flex;
  border-radius: 3px;
  overflow: hidden;
}

.bar-unit {
  width: var(--dot);
  height: var(--dot);
  background: #111827;
  border-right: 1px solid rgba(255,255,255,0.25);
}

.bar-unit:last-child {
  border-right: none;
}

.bar.blue .bar-unit {
  background: var(--blue);
}

.bar.red .bar-unit {
  background: var(--bad);
}

.bar.green .bar-unit {
  background: #16a34a;
}

.bar.purple .bar-unit {
  background: #7c3aed;
}

.dot.orange { background: #f97316; }
.bar.orange .bar-unit { background: #f97316; }
.stageDot.orange { background: #f97316; }
.ghost.orange { background: #f97316; }

.dot.green {
  background: #16a34a;
}

.stageDot.green {
  background: #16a34a;
}

.ghost.green {
  background: #16a34a;
}

.stageDot.green-alt { background: #4ade80; }
.ghost.green-alt { background: #4ade80; }

.dot.active-group,
.bar-unit.active-group {
  outline: 3px solid #facc15;
  box-shadow: 0 0 8px rgba(250, 204, 21, 0.6);
  transition: all 0.2s ease;
}

.mult-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.mult-group {
  display: flex;
  gap: 4px;
  align-items: center;
}

.mult-dot {
  width: var(--dot);
  height: var(--dot);
  border-radius: 3px;
  transition: transform .2s ease;
}

.mult-dot.green { background: #16a34a; }
.mult-dot.green-alt { background: #4ade80; }
.mult-dot.blue { background: #2563eb; }
.mult-dot.blue-alt { background: #60a5fa; }
.mult-dot.pulse { transform: scale(1.5); }
.fade-out { opacity: 0; transition: opacity 0.35s ease; }

.mult-plus {
  font-size: 20px;
  font-weight: 900;
  color: #94a3b8;
  padding: 0 2px;
}

.opBadge {
  font-size: 30px;
  font-weight: 900;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e5e7eb;
  background: #fff;
}

/* PALCO ATUALIZADO */
.stage {
  background: #fff;
  border: 2px solid #e5e7eb;
  border-radius: 14px;
  padding: 12px;
  min-height: var(--stageMinH);
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.stageTitle {
  position: absolute;
  top: 8px;
  left: 10px;
  font-size: 11px;
  font-weight: 900;
  color: #64748b;
  text-transform: uppercase;
}

.stageInner {
  position: relative;
  margin-top: 20px;
  flex: 1;
  height: 65px;
}

.stageCounter {
  font-size: 70px;
  font-weight: 900;
  color: #94a3b8;
  border-left: 2px solid #eef2ff;
  padding-left: 20px;
  min-width: 90px;
  text-align: center;
}

.dot {
  width: var(--dot);
  height: var(--dot);
  border-radius: 3px;
  background: #111827;
}

.dot.red {
  background: var(--bad);
}

.dot.blue {
  background: var(--blue);
}

.stageDot {
  position: absolute;
  width: var(--dot);
  height: var(--dot);
  border-radius: 3px;
  background: #111827;
  transition: transform .2s ease, opacity .2s ease;
}

.stageDot.red {
  background: var(--bad);
}

.stageDot.blue {
  background: var(--blue);
}

.stageDot.pulse {
  transform: scale(1.5);
}

.question {
  display: flex;
  justify-content: center;
  padding: 12px;
  margin-bottom: 12px;
  background: #f9fafb;
  border-radius: 12px;
}

.big {
  font-size: var(--questionSize);
  font-weight: 900;
}

.buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.buttons button {
  padding: 12px 0;
  font-size: 18px;
  font-weight: 900;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: #e5e7eb;
}

.buttons button:hover {
  background: #d1d5db;
}

.btn-hint,
.btn-next {
  padding: 25px 50px;
  min-width: 200px;
  font-size: 18px;
}

.msg {
  margin-top: 10px;
  text-align: center;
  font-size: 18px;
  font-weight: 900;
  min-height: 26px;
}

.msg.ok {
  color: var(--ok);
}

.msg.bad {
  color: var(--bad);
}

.controls {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 10px;
}

.hintText {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  margin-top: 8px;
  min-height: 20px;
}

.stats {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  justify-content: center;
}

.pill {
  background: #f3f4f6;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--muted);
}

/* ESTILO DO AVATAR PNG */
.buddy {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  padding: 0;
}

.avatar-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
}

.buddy-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
}

.buddy h2,
.buddy p {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 8px;
  backdrop-filter: blur(4px);
}

.buddy h2 {
  margin-bottom: 6px;
  margin-top: 0;
}

.buddy p {
  margin-bottom: 16px;
  margin-top: 0;
}

#animLayer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
}

.ghost {
  position: absolute;
  width: var(--dot);
  height: var(--dot);
  border-radius: 3px;
  background: #111827;
  transition: transform .55s ease, opacity .25s ease;
}

.ghost.red {
  background: var(--bad);
}

.ghost.blue {
  background: var(--blue);
}

.stageDot.blue-alt { background: #60a5fa; }
.ghost.blue-alt { background: #60a5fa; }


/* Fixa o tamanho do resultado para a conta não "dançar" */
#finalQuestionText {
  display: inline-block;
  min-width: 45px;
  /* Reserva espaço para até 2 dígitos */
  text-align: center;
  transition: transform 0.2s;
}

/* Melhora o número voador para ignorar margens e focar no centro */
.flying-number {
  position: fixed;
  z-index: 10000;
  font-weight: 900;
  color: #94a3b8;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1);
  /* Transição mais natural */
  transform-origin: center center;
  margin: 0;
  padding: 0;
  line-height: 1;
}

.stageCounter.negative {
  color: #dc2626 !important;
}

.stageDot.negative-result {
  background-color: #fca5a5;
  /* Vermelho claro */
  border: 3px solid #dc2626;
}

/* =========================
CONTAINER
========================= */

.btn-niveis {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

/* =========================
BOTÃO BASE
========================= */

.nivel {
  padding: 10px 16px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: 0.2s;
}

/* Hover padrão */
.nivel:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

/* Ativo (quando selecionar depois via JS) */
.nivel.ativo {
  outline: 3px solid #111827;
}

/* =========================
CORES POR NÍVEL
========================= */

/* Muito Fácil → Verde claro */
.muito-facil {
  background: #22c55e;
}

/* Fácil → Verde */
.facil {
  background: #16a34a;
}

/* Médio → Amarelo/Laranja */
.medio {
  background: #f59e0b;
}

/* Difícil → Vermelho */
.dificil {
  background: #7c3aed;

}

/* Muito Difícil → Roxo escuro */
.muito-dificil {
  background: #ef4444;
}

#operacao {
  padding: 5px;
  border-radius: 5px;
  margin-top: 5px;
}

/* =========================
   PAINEL DA TABUADA (telas grandes, só multiplicação)
   ========================= */
.tabuada-panel {
  display: none;
  position: fixed;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 22px;
  min-width: 200px;
  border: 1px solid #eef2ff;
}

@media (min-width: 1400px) {
  .tabuada-panel.active {
    display: block;
  }
}

.tabuada-title {
  font-size: 18px;
  font-weight: 900;
  text-align: center;
  margin-bottom: 14px;
  color: var(--text);
  padding-bottom: 10px;
  border-bottom: 2px solid #eef2ff;
}

.tabuada-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
  border-radius: 6px;
}

.tabuada-line.highlight {
  background: #ede9fe;
  color: #7c3aed;
}

.tabuada-line .resultado {
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.tabuada-panel.revealed .tabuada-line .resultado {
  opacity: 1;
  transform: translateX(0);
}

.tabuada-reveal-btn {
  margin-top: 14px;
  width: 100%;
  padding: 10px;
  background: #111827;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
}

.tabuada-reveal-btn:hover {
  background: #1f2937;
}

/* =========================
   BOTÕES DE AÇÃO FLUTUANTES NO STAGE
   ========================= */
.stage-action-wrap {
  position: absolute;
  right: 12px;
  bottom: -18px;
  margin: 0;
  z-index: 10;
}

.btn-stage-action {
  background: #7c3aed;
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.btn-stage-action:hover {
  background: #6d28d9;
  transform: translateY(-1px);
}

.tabuada-panel.revealed .tabuada-reveal-btn {
  opacity: 0.4;
  pointer-events: none;
}


@media (min-width: 920px) {
  .content {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* =========================
   MOBILE: caber em 1 tela (sem rolagem)
   (Desktop não muda)
   ========================= */
@media (max-width: 600px) {

  /* trava a tela pra não aparecer barra */
  html,
  body {
    height: 100%;
    overflow: hidden;
  }

  body {
    padding: 8px;
    /* menos borda */
    align-items: stretch;
    /* ocupa altura toda */
    justify-content: stretch;
  }

  .app {
    width: 100%;
    height: calc(100dvh - 16px);
    /* cabe no viewport real do celular */
    overflow: hidden;
    /* garante sem scroll */
    display: flex;
    flex-direction: column;
  }

  /* header mais compacto */
  header {
    padding: 10px 12px;
    align-items: center;
  }

  header h1 {
    font-size: 16px;
  }

  .stats {
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
    /* quebra pra não estourar */
    justify-content: flex-start;
  }

  .pill {
    font-size: 12px;
    padding: 5px 10px;
  }

  .btn-reset {
    padding: 8px 12px;
    border-radius: 10px;
  }

  /* conteúdo vira 1 coluna e ocupa a altura */
  .content {
    grid-template-columns: 1fr !important;
    gap: 10px;
    padding: 10px;
    flex: 1;
    min-height: 0;
    /* importante pra flex não forçar overflow */
    overflow: hidden;
  }

  .card {
    padding: 12px;
  }

  /* zonas e palco mais “baixos” */
  :root {
    --dot: 16px;
    /* bolinhas menores */
    --dotGap: 6px;
  }

  .zones {
    gap: 8px;
    margin-bottom: 8px;
  }

  .zone {
    padding: 10px;
    min-height: 72px;
    /* reduz */
  }

  .dots {
    margin-top: 18px;
  }

  .opBadge {
    width: 42px;
    height: 60px;
    font-size: 24px;
    border-radius: 12px;
  }

  .stage {
    padding: 10px;
    min-height: 72px;
    margin-bottom: 8px;
  }

  .stageInner {
    height: 52px;
    margin-top: 22px;
  }

  .stageCounter {
    font-size: 44px;
    min-width: 64px;
    padding-left: 12px;
  }

  /* pergunta menor pra caber sempre */
  .question {
    padding: 10px;
    margin-bottom: 8px;
  }

  .big {
    font-size: 26px;
  }

  /* botões de resposta: 5 colunas */
  .buttons {
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 8px;
  }

  .buttons button {
    padding: 10px 0;
    font-size: 16px;
    border-radius: 10px;
  }

  .msg {
    margin-top: 6px;
    font-size: 16px;
    min-height: 22px;
  }

  /* controles: cabem lado a lado sem estourar */
  .controls {
    gap: 8px;
    margin-top: 8px;
  }

  .btn-hint,
  .btn-next {
    padding: 12px 10px;
    min-width: 0;
    width: 50%;
    font-size: 16px;
    border-radius: 12px;
  }

  .hintText {
    font-size: 13px;
    margin-top: 6px;
    min-height: 18px;
  }

  /* card do buddy: diminui avatar e remove “margens negativas” só no mobile */
  .buddy {
    position: absolute;
    display: flex;
    flex-direction: row;
    gap: 45px;
    border: none;
    align-items: center;
    bottom: -50px;
    padding: 10px;
  }

  .avatar-container {
    width: 120px;
    height: 120px;
    margin-bottom: 6px;
  }

  .buddy-img {
    margin-top: -50px;
    /* desktop continua com -60px */
    max-width: 143%;
  }

  h2 {
    margin-top: 0;
    /* desktop continua com -65px */
    font-size: 16px;
  }

  p {
    margin-top: 6px;
    /* desktop continua com -20px */
    font-size: 13px;
  }



}