/**
 * Styles pour le sélecteur d'opération arithmétique
 * Composant permettant de choisir entre ×, +, −, ÷
 */

.operation-selector-wrapper {
  margin: 20px auto;
  padding: 20px;
  max-width: 600px;
  background-color: rgb(52 152 219 / 0.85);
  border-radius: 20px;
  box-shadow: 0 8px 16px rgb(0 0 0 / 0.1);
  border: 1px solid rgb(52 152 219 / 0.5);
  text-align: center;
  animation: fade-in-up 0.3s ease-out;
}

.operation-selector-wrapper h3 {
  margin: 0 0 16px 0;
  font-size: 1.2rem;
  color: white;
  font-weight: 600;
  text-shadow: 0 1px 2px rgb(0 0 0 / 0.2);
}

.operation-selector-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.operation-btn {
  min-width: 140px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 500;
  border: 2px solid var(--border-color, #ddd);
  border-radius: 8px;
  background: white;
  color: var(--text-color, #333);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.operation-icon {
  width: 64px;
  height: 64px;
  object-fit: contain;
  filter: drop-shadow(0 1px 2px rgb(0 0 0 / 0.1));
  transition: transform 0.2s ease;
}

.operation-btn:hover:not(:disabled) .operation-icon {
  transform: scale(1.1);
}

.operation-btn.active .operation-icon {
  filter: drop-shadow(0 2px 4px rgb(0 0 0 / 0.2)) brightness(1.1);
}

.operation-label {
  font-size: 0.9rem;
  line-height: 1.2;
}

.operation-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(0 0 0 / 0.15);
  border-color: var(--primary-color, #4caf50);
}

.operation-btn:active:not(:disabled) {
  transform: translateY(0);
}

.operation-btn.active {
  background-color: var(--primary-color, #4caf50);
  color: white;
  font-weight: bold;
  border-color: var(--primary-color, #4caf50);
  box-shadow: 0 4px 12px rgb(76 175 80 / 0.3);
}

.operation-btn.active::before {
  content: '✓';
  position: absolute;
  top: -8px;
  right: -8px;
  width: 24px;
  height: 24px;
  background: var(--success-color, #2e7d32);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
}

.operation-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: #e0e0e0;
  color: #555;
}

.operation-btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Responsive mobile */
@media (max-width: 600px) {
  .operation-selector-wrapper {
    padding: 16px;
    margin: 16px 12px;
  }

  .operation-selector-wrapper h3 {
    font-size: 1.1rem;
  }

  .operation-selector-buttons {
    gap: 10px;
  }

  .operation-btn {
    min-width: 120px;
    padding: 10px 16px;
    font-size: 0.95rem;
  }
}

/* Mode dark - cohérent avec .content-card */
.theme-dark .operation-selector-wrapper {
  background: rgb(44 62 80 / 0.7);
  border-color: rgb(52 152 219 / 0.5);
}

.theme-dark .operation-selector-wrapper h3 {
  color: #e0e0e0;
}

.theme-dark .operation-btn {
  background: rgb(30 40 50 / 0.9);
  color: #f5f5f5;
  border-color: rgb(255 255 255 / 0.3);
}

.theme-dark .operation-btn.active {
  background-color: var(--primary-color, #4caf50);
  color: white;
  border-color: var(--primary-color, #4caf50);
}

.theme-dark .operation-btn:disabled {
  background: rgb(30 40 50 / 0.6);
  color: rgb(180 180 180);
}

/* Animation d'apparition */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Focus accessible au clavier */
.operation-btn:focus {
  outline: 3px solid var(--focus-color, #2196f3);
  outline-offset: 2px;
}