/* Loading Bar Component */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 300ms ease;
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-container {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  min-width: 300px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.loading-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-2);
  margin-bottom: 1.5rem;
}

.loading-progress {
  width: 100%;
  height: 8px;
  background: #e9ecef;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.loading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
  width: 0%;
  border-radius: 4px;
  transition: width 300ms ease;
  position: relative;
}

.loading-progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.loading-text {
  font-size: 0.9rem;
  color: var(--gray-2);
  margin-bottom: 0.5rem;
}

.loading-percentage {
  font-size: 0.85rem;
  color: var(--primary-dark);
  font-weight: 600;
}

/* Spinner for indeterminate loading */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #e9ecef;
  border-top: 4px solid var(--primary-light);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem auto;
}

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

/* Small loading indicator for buttons */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.btn-loading .btn-text {
  opacity: 0;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .loading-container {
    min-width: 280px;
    padding: 1.5rem;
  }
  
  .loading-title {
    font-size: 1rem;
  }
}