:root{
  --qse-gap: 10px;
  --qse-x-color: rgba(220, 53, 69, 0.95); /* bootstrap danger */

  /* Paleta vibrante em verde (alinhada ao Forme a Frase) */
  --qse-g900: #0b5d2a; /* fundo mais escuro */
  --qse-g800: #0e6e33;
  --qse-g700: #107a38;
  --qse-g600: #138a40;
  --qse-g400: #22c55e; /* acentos */
  --qse-panel: #0e6e33; /* painéis/cartas */
  --qse-cell-bg: rgba(0,0,0,0.12); /* fallback para células sem imagem */
}

/* Fundo geral em degradê verde e texto claro */
html, body{
  min-height: 100%;
  background: radial-gradient(1200px 600px at 20% -10%, var(--qse-g600), transparent 60%),
              radial-gradient(1200px 600px at 120% 20%, var(--qse-g700), transparent 55%),
              linear-gradient(180deg, var(--qse-g700), var(--qse-g900));
  color: #eafbea;
}

/* Grid 3x3 responsivo */
.qse-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: var(--qse-gap);
  max-width: min(95vw, 720px);
}

/* Mantém células quadradas */
.qse-cell{
  position: relative;
  width: 100%;
  background: var(--qse-cell-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

.qse-cell-inner{
  position: relative;
  width: 100%;
  padding-top: 100%; /* aspecto 1:1 */
}

.qse-cell-inner img{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 120ms ease, filter 150ms ease;
}

/* Animação leve de clique */
.qse-cell.click-anim img{
  transform: scale(0.96);
  filter: brightness(0.95);
}

/* X vermelho ao errar */
.qse-cell.wrong::after{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: 
    linear-gradient(45deg, transparent 45%, var(--qse-x-color) 47%, var(--qse-x-color) 53%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, var(--qse-x-color) 47%, var(--qse-x-color) 53%, transparent 55%);
  mix-blend-mode: normal;
  opacity: 0;
  animation: qse-x 250ms ease forwards;
}

@keyframes qse-x{
  from{ opacity: 0; }
  to{ opacity: 1; }
}

/* Overlay de vitória com transição suave */
.qse-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 1000;
  opacity: 0;
  transition: opacity 200ms ease;
}

.qse-overlay img{
  max-width: 95vw;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.2), 0 8px 32px rgba(0,0,0,0.6);
}

.qse-final-score{
  font-size: 1.25rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.qse-overlay.show{
  opacity: 1;
}

.qse-overlay.d-none{ display: none; }

.qse-overlay-actions{
  margin-top: 1rem;
}

/* Botão Reiniciar no overlay: verde chamativo, texto preto, negrito e CAIXA ALTA */
#overlayRestart.btn{
  background-color: #22c55e; /* verde vivo */
  border-color: #16a34a;
  color: #111111; /* letras pretas (quase preto) */
  font-weight: 800; /* negrito forte */
  text-transform: uppercase; /* CAIXA ALTA */
}
#overlayRestart.btn:hover, #overlayRestart.btn:focus{
  background-color: #16a34a; /* escurece no hover */
  border-color: #15803d;
  color: #111111;
}

/* Centro (personagem) sempre não clicável visualmente */
.qse-cell.center img{
  outline: 2px dashed rgba(0,0,0,0.08);
}

/* Cursor para clicáveis */
.qse-cell.clickable{ cursor: pointer; }

/* Inputs e botões com alto contraste sobre o fundo verde */
.form-select{
  background-color: var(--qse-g800);
  border-color: rgba(255,255,255,0.25);
  color: #f0fff4;
}
.form-select:focus{ border-color: var(--qse-g400); box-shadow: 0 0 0 .2rem rgba(34,197,94,.25); }

/* Menu do dropdown de níveis: altura limitada + rolagem */
.dropdown-menu.levels-menu{
  max-height: 260px;
  overflow-y: auto;
  min-width: 220px;
}

#restartBtn.btn{
  background-color: #f59e0b; /* âmbar para destaque */
  border-color: #d97706;
  color: #111827;
}
#restartBtn.btn:hover, #restartBtn.btn:focus{ background:#d97706; border-color:#b45309; color:#fff; }

#closeBtn.btn{
  background-color: #b91c1c;
  border-color: #991b1b;
  color: #ffffff;
}
#closeBtn.btn:hover, #closeBtn.btn:focus{ background:#991b1b; border-color:#7f1d1d; color:#fff; }

.btn-outline-primary{ color:#eafbea; border-color: var(--qse-g400); }
.btn-outline-primary:hover{ background: var(--qse-g600); border-color: var(--qse-g600); }