.keyword-trend-analyzer {
  background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.keyword-trend-analyzer:hover {
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.07);
}

.keyword-trend-analyzer h2 {
  color: #1f2937;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
}

.keyword-trend-analyzer input {
  border: 2px solid #d1d5db;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.keyword-trend-analyzer input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.keyword-trend-analyzer button {
  border-radius: 12px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.2s ease;
  min-width: 120px;
}

.keyword-trend-analyzer button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.keyword-trend-analyzer button:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.keyword-trend-analyzer .chart-container {
  height: 320px;
  margin-top: 24px;
}

.keyword-trend-analyzer .stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.keyword-trend-analyzer .stat-card {
  background: white;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.keyword-trend-analyzer .stat-card h4 {
  color: #4b5563;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.keyword-trend-analyzer .stat-card p {
  color: #1f2937;
  font-size: 1.5rem;
  font-weight: 700;
}

.keyword-trend-analyzer .error-message {
  background-color: #fee2e2;
  color: #dc2626;
  padding: 12px;
  border-radius: 8px;
  margin-top: 16px;
  text-align: center;
  font-weight: 500;
}

.keyword-trend-analyzer .loading-indicator {
  text-align: center;
  padding: 24px;
  color: #4b5563;
}

.keyword-trend-analyzer .loading-indicator .spinner {
  border: 3px solid #e5e7eb;
  border-top: 3px solid #3b82f6;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 1s linear infinite;
  margin: 0 auto 12px;
}

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