/**
 * Math Blitz - Game Specific Styles
 * Full-screen one-question-at-a-time format
 */

/* Blitz Container */
.blitz-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
}

/* Blitz Header */
.blitz-header {
  margin-bottom: var(--space-6);
}

.blitz-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--color-surface);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-width: 100px;
}

.stat-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.streak-value {
  color: var(--color-warning);
}

/* Question Container */
.blitz-question-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) 0;
}

.blitz-question-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  text-align: center;
  position: relative;
}

.question-type-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-6);
}

.blitz-question-text {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
  line-height: 1.2;
}

/* Choice Buttons */
.blitz-choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--space-4);
}

.blitz-choice-btn {
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 3px solid transparent;
  padding: var(--space-5);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.blitz-choice-btn:hover {
  background: var(--color-primary);
  color: white;
  transform: scale(1.08);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-dark);
}

.blitz-choice-btn:active {
  transform: scale(1.02);
}

/* Pulse animation for choice buttons */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% {
    box-shadow: 0 0 20px 5px rgba(99, 102, 241, 0.2);
  }
}

.blitz-choice-btn:hover {
  animation: pulse-glow 1.5s infinite;
}

/* Feedback Overlay */
.feedback-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

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

.feedback-content {
  text-align: center;
  transform: scale(0.8);
  transition: transform var(--transition-fast);
}

.feedback-overlay.show .feedback-content {
  transform: scale(1);
}

.feedback-icon {
  font-size: 8rem;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.feedback-content.correct .feedback-icon {
  color: var(--color-success);
  animation: bounce 0.6s;
}

.feedback-content.incorrect .feedback-icon {
  color: var(--color-error);
}

.feedback-text {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--space-2);
}

.feedback-bonus {
  font-size: var(--font-size-xl);
  color: var(--color-warning);
  font-weight: var(--font-weight-semibold);
}

/* Mobile Responsive */
@media (max-width: 767px) {
  .blitz-question-card {
    padding: var(--space-6);
  }

  .blitz-question-text {
    font-size: var(--font-size-3xl);
  }

  .blitz-choices {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .blitz-choice-btn {
    font-size: var(--font-size-xl);
    min-height: 60px;
    padding: var(--space-4);
  }

  .stat-item {
    min-width: 80px;
    padding: var(--space-2) var(--space-3);
  }

  .stat-value {
    font-size: var(--font-size-xl);
  }

  .feedback-icon {
    font-size: 6rem;
  }

  .feedback-text {
    font-size: var(--font-size-3xl);
  }
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .blitz-question-card {
    padding: var(--space-8);
  }

  .blitz-choices {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Desktop - Full grid */
@media (min-width: 1024px) {
  .blitz-choices {
    grid-template-columns: repeat(5, 1fr);
  }

  .blitz-question-container {
    padding: var(--space-12) 0;
  }
}

/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.blitz-question-card {
  animation: slideInUp var(--transition-slow);
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .blitz-choice-btn {
    border: 3px solid currentColor;
  }
}