body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

/* 로딩 스타일 */
.loading-container {
  text-align: center;
  padding: 40px 20px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid #e9ecef;
  border-top: 3px solid #007bff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

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

/* 에러 스타일 */
.error-container {
  display: none;
  text-align: center;
  padding: 40px 20px;
  max-width: 400px;
}

.error-title {
  font-size: 18px;
  color: #dc3545;
  margin-bottom: 12px;
}

.error-message {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
  margin-bottom: 20px;
}

.error-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: #007bff;
  color: white;
}

.btn-secondary {
  background: #6c757d;
  color: white;
}