/* ==========================================================================
   BrainTrain - Styles Le Compte est bon
   ========================================================================== */

.ceb-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  gap: 0.875rem;
}

/* --------------------------------------------------------------------------
   Carte Cible (Target Banner)
   -------------------------------------------------------------------------- */
.ceb-target-card {
  width: 100%;
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 100%);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  position: relative;
  overflow: hidden;
}

.ceb-target-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.ceb-target-label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #FCD34D;
}

.ceb-target-value {
  font-size: 2.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  line-height: 1;
  color: #FFFFFF;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* --------------------------------------------------------------------------
   Zone de Construction de l'Opération (Active Builder)
   -------------------------------------------------------------------------- */
.ceb-builder-card {
  width: 100%;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
  min-height: 68px;
}

.ceb-slot {
  min-width: 58px;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 2px dashed var(--border-strong);
  background-color: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  padding: 0 0.5rem;
  transition: all var(--transition-fast);
}

.ceb-slot.op-slot {
  min-width: 44px;
  width: 44px;
  border-radius: var(--radius-full);
  color: var(--accent-primary);
  font-size: 1.5rem;
}

.ceb-slot.filled {
  border-style: solid;
  border-color: var(--accent-primary);
  background-color: #EEF2FF;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.15);
}

/* --------------------------------------------------------------------------
   Plaque des Nombres Disponibles
   -------------------------------------------------------------------------- */
.ceb-section-box {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  box-shadow: var(--shadow-sm);
}

.ceb-numbers-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.625rem;
}

.ceb-num-tile {
  min-width: 54px;
  height: 52px;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #FFFFFF 0%, #FAF8F5 100%);
  border: 2px solid #1C1917;
  color: #1C1917;
  font-size: 1.375rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  user-select: none;
  touch-action: manipulation;
  position: relative;
}

.ceb-num-tile:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
}

.ceb-num-tile:active {
  transform: scale(0.94);
}

.ceb-num-tile.selected {
  background: #EEF2FF;
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.25);
  transform: scale(1.06);
}

.ceb-num-tile.is-result {
  background: linear-gradient(135deg, #FDF4FF 0%, #FAE8FF 100%);
  border-color: #A855F7;
  color: #7E22CE;
}

/* --------------------------------------------------------------------------
   Barre des Opérateurs (+, −, ×, ÷)
   -------------------------------------------------------------------------- */
.ceb-operators-bar {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
}

.ceb-op-btn {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 2px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 1.625rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  user-select: none;
}

.ceb-op-btn:hover {
  border-color: var(--accent-primary);
  background-color: var(--bg-subtle);
  transform: scale(1.08);
}

.ceb-op-btn:active {
  transform: scale(0.92);
}

.ceb-op-btn.selected {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* --------------------------------------------------------------------------
   Historique des Étapes Réalisées
   -------------------------------------------------------------------------- */
.ceb-history-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  max-height: 160px;
  overflow-y: auto;
}

.ceb-step-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-xs);
  padding: 0.375rem 0.625rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.ceb-step-num {
  font-size: 0.75rem;
  color: var(--text-muted);
}