/*
 * Loading & Progress Features
 * Skeleton loaders, step progress, infinite scroll, error states
 */

/* =================================================================
   LOADING & PROGRESS COMPONENTS
   ================================================================= */

/* Skeleton Variants */
.skeleton-examples {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  padding: 16px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.skeleton-image {
  height: 140px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.skeleton-card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skeleton-title {
  height: 18px;
  width: 70%;
}

.skeleton-text {
  height: 14px;
  width: 100%;
}

.skeleton-text-short {
  width: 50%;
}

.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
}

.skeleton-list-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skeleton-table {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.skeleton-table-row {
  display: flex;
  gap: 16px;
  padding: 12px 16px;
}

.skeleton-table-header {
  background-color: var(--bg-secondary);
}

.skeleton-table-row:not(.skeleton-table-header) {
  border-top: 1px solid var(--border-color);
}

.skeleton-cell {
  flex: 1;
  height: 14px;
}

/* Step Progress */
.step-progress-examples {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.step-progress {
  display: flex;
  align-items: flex-start;
}

.step-progress-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}

.step-progress-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-secondary);
  z-index: 1;
}

.step-complete .step-progress-icon {
  background-color: var(--accent-green);
  border-color: var(--accent-green);
  color: white;
}

.step-current .step-progress-icon {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.step-progress-pulse {
  width: 12px;
  height: 12px;
  background-color: white;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.step-progress-label {
  margin-top: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
}

.step-progress-time {
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-secondary);
  text-align: center;
}

.step-progress-line {
  position: absolute;
  top: 16px;
  left: calc(50% + 20px);
  right: calc(-50% + 20px);
  height: 2px;
  background-color: var(--border-color);
}

.step-progress-item:last-child .step-progress-line {
  display: none;
}

.step-line-complete {
  background-color: var(--accent-green);
}

/* Infinite Scroll Trigger */
.infinite-scroll-demo {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}

.infinite-scroll-demo:last-child {
  margin-bottom: 0;
}

.infinite-scroll-list {
  display: flex;
  flex-direction: column;
}

.infinite-scroll-item {
  padding: 16px;
  font-size: 14px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.infinite-scroll-trigger {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px;
}

.infinite-scroll-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.infinite-scroll-trigger span {
  font-size: 12px;
  color: var(--text-secondary);
}

.infinite-scroll-end-message {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

.infinite-scroll-end-message svg {
  color: var(--accent-green);
}

/* Retry Error State */
.retry-states {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.retry-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px;
  background-color: var(--bg-secondary);
  border-radius: 12px;
  text-align: center;
}

.retry-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(239, 68, 68, 0.1);
  border-radius: 50%;
  margin-bottom: 16px;
}

.retry-icon svg {
  color: #EF4444;
}

.retry-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.retry-message {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 20px 0;
  max-width: 300px;
}

.retry-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--accent-primary);
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: white;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.retry-button:hover {
  background-color: #4F46E5;
}

.retry-button svg {
  width: 16px;
  height: 16px;
}

.retry-error-inline {
  flex-direction: row;
  justify-content: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.retry-error-inline svg {
  color: #EF4444;
  flex-shrink: 0;
}

.retry-error-inline span {
  flex: 1;
  font-size: 14px;
  color: var(--text-primary);
  text-align: left;
}

.retry-link {
  padding: 0;
  background: none;
  border: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-primary);
  cursor: pointer;
  text-decoration: underline;
}

.retry-link:hover {
  color: #4F46E5;
}