/* =============================================
   Skeleton Loader Component — UI-0077, UI-0105
   ============================================= */

/* --- Base Skeleton Element --- */
.skeleton {
  display: block;
  background-color: var(--bg-muted, #EEF1F5);
  background-image: var(--gradient-skeleton,
    linear-gradient(90deg, #EEF1F5 25%, #F7F8FA 50%, #EEF1F5 75%)
  );
  background-size: 200% 100%;
  background-position: 200% center;
  animation: skeleton-shimmer 1.5s ease infinite;
  border-radius: var(--radius-md); /* 8px */
  flex-shrink: 0;
}

/* --- Text Line Skeletons --- */
.skeleton--text {
  height: 16px;
  border-radius: var(--radius-sm); /* 4px */
}

.skeleton--text-sm {
  height: 12px;
  border-radius: var(--radius-sm);
}

.skeleton--text-lg {
  height: 20px;
  border-radius: var(--radius-sm);
}

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

/* --- Avatar Skeleton --- */
.skeleton--avatar {
  border-radius: 50%;
}

.skeleton--avatar-sm  { width: 28px; height: 28px; }
.skeleton--avatar-md  { width: 36px; height: 36px; }
.skeleton--avatar-lg  { width: 48px; height: 48px; }
.skeleton--avatar-xl  { width: 80px; height: 80px; }

/* --- Button Skeleton --- */
.skeleton--button {
  height: 40px;
  border-radius: var(--radius-md);
}

/* --- Card Skeleton --- */
.skeleton--card {
  border-radius: var(--radius-lg); /* 12px */
}

/* --- Image/Media Skeleton --- */
.skeleton--image {
  border-radius: var(--radius-lg);
}

/* =============================================
   Skeleton Card Compound Components
   ============================================= */
.skeleton-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-default, #E2E8F0);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.skeleton-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.skeleton-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-card__footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-muted, #EEF1F5);
  display: flex;
  gap: var(--space-3);
}

/* Convenience widths */
.skeleton--w-full  { width: 100%; }
.skeleton--w-3\/4  { width: 75%; }
.skeleton--w-2\/3  { width: 66.66%; }
.skeleton--w-1\/2  { width: 50%; }
.skeleton--w-1\/3  { width: 33.33%; }
.skeleton--w-1\/4  { width: 25%; }

/* =============================================
   Shimmer Keyframe (UI-0105)
   background-position slides -200% to 200%
   ============================================= */
@keyframes skeleton-shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}