/* Custom Styles for Lift Your Brain */

:root {
  --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
  --success-color: #10b981;
  --highlight-color: #60a5fa;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: #111827;
  color: #f9fafb;
  line-height: 1.6;
}

/* Smooth transitions */
a, button {
  transition: all 0.3s ease;
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Card hover effects */
.game-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.game-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(59, 130, 246, 0.3);
}

/* Button styles */
.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #14b8a6 100%);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

/* Mobile menu animation */
.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-menu.active {
  max-height: 500px;
}

/* Game canvas and interface */
.game-canvas {
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Score display */
.score-display {
  background: rgba(59, 130, 246, 0.1);
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-radius: 8px;
  padding: 1rem;
}

/* Difficulty badges */
.badge-easy {
  background-color: #10b981;
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
}

.badge-medium {
  background-color: #f59e0b;
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
}

.badge-hard {
  background-color: #ef4444;
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Stats dashboard */
.stat-card {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(20, 184, 166, 0.1) 100%);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  padding: 1.5rem;
}

/* Loading animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(59, 130, 246, 0.3);
  border-radius: 50%;
  border-top-color: #3b82f6;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .gradient-text {
    font-size: 2rem;
  }
}