:root {
  --primary-color: #2563eb;
  --secondary-color: #eff6ff;
  --background-color: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #5f6368;
}

.dark-mode {
  --primary-color: #60a5fa;
  --secondary-color: #1e293b;
  --background-color: #111827;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--background-color);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.search-input {
  transition: box-shadow 0.3s ease;
}

.loading-spinner {
  border: 4px solid var(--primary-color);
  border-top: 4px solid transparent;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}