/* Inter font for clean modern look */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
body {
  font-family: 'Inter', sans-serif;
}

/* Mode buttons */
.mode-btn {
  background-color: white;
  color: hsl(210, 10%, 25%);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.mode-btn:hover {
  background-color: hsl(210, 50%, 97%);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.mode-btn.active {
  background-color: hsl(210, 80%, 50%);
  color: white;
  border-color: hsl(210, 80%, 50%);
  box-shadow: 0 6px 12px hsla(210, 80%, 50%, 0.25);
  transform: scale(1.02);
}

/* Smooth fade-in animation for sections */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-in {
  animation: fadeIn 0.4s ease-in-out both;
}

/* History entries */
.history-item {
  border-bottom: 1px solid #e5e7eb;
  padding: 6px 0;
}
.history-item:last-child {
  border-bottom: none;
}
.history-item strong {
  color: #1f2937;
}
.history-item small {
  color: #9ca3af;
}