/**
 * Loading Skeletons - Modern loading states
 * Replaces old spinners with skeleton screens
 */

/* Base skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-700) 25%,
    var(--color-surface-600) 50%,
    var(--color-surface-700) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--border-radius-md);
}

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

/* Skeleton variants */
.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text:last-child {
  width: 80%;
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: 1em;
}

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

.skeleton-button {
  height: 40px;
  width: 120px;
}

.skeleton-card {
  height: 200px;
  border-radius: var(--border-radius-lg);
}

/* Project card skeleton */
.skeleton-project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
}

.skeleton-project-header {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.skeleton-project-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
}

.skeleton-project-info {
  flex: 1;
}

.skeleton-project-stats {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.skeleton-project-stat {
  height: 1em;
  width: 80px;
}

.skeleton-project-actions {
  display: flex;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

/* Terminal skeleton */
.skeleton-terminal {
  background: var(--terminal-bg);
  padding: var(--space-4);
  border-radius: var(--border-radius-md);
}

.skeleton-terminal-line {
  height: 1em;
  margin-bottom: 0.5em;
  background: linear-gradient(
    90deg,
    rgba(169, 177, 214, 0.1) 25%,
    rgba(169, 177, 214, 0.2) 50%,
    rgba(169, 177, 214, 0.1) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.skeleton-terminal-line:nth-child(1) { width: 60%; }
.skeleton-terminal-line:nth-child(2) { width: 80%; }
.skeleton-terminal-line:nth-child(3) { width: 40%; }
.skeleton-terminal-line:nth-child(4) { width: 90%; }
.skeleton-terminal-line:nth-child(5) { width: 70%; }

/* List skeleton */
.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
}

.skeleton-list-icon {
  width: 24px;
  height: 24px;
  border-radius: var(--border-radius-sm);
}

.skeleton-list-content {
  flex: 1;
}

/* Grid skeleton */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

/* Pulse variant (for important loading) */
.skeleton-pulse {
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

@keyframes skeleton-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Shimmer variant (more subtle) */
.skeleton-shimmer {
  position: relative;
  overflow: hidden;
}

.skeleton-shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.05),
    transparent
  );
  animation: shimmer 1.5s infinite;
}

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