/* ========================================
   SKELETON SCREENS - Loading States
   ======================================== */

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes skeleton-loading {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.skeleton {
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, var(--surface) 0%, var(--surface-light) 50%, var(--surface) 100%);
    background-size: 2000px 100%;
    animation: shimmer 2s infinite linear;
    border-radius: var(--border-radius);
    pointer-events: none;
    user-select: none;
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.75rem;
    border-radius: var(--border-radius-sm);
}

.skeleton-text:last-child { margin-bottom: 0; }
.skeleton-text-short { width: 60%; }
.skeleton-text-medium { width: 80%; }

.skeleton-card {
    height: 100%;
    min-height: 200px;
    background: var(--surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
}

.skeleton-card .skeleton { margin: 1.5rem; }

.skeleton-avatar {
    width: 4.5rem;
    height: 4.5rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-stat { height: 4rem; margin: 0.5rem; }
.skeleton-button { height: 3rem; border-radius: var(--border-radius); }

.skeleton-profile-card {
    padding: 1.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.skeleton-stats-grid {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skeleton-actions-grid {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.dashboard-grid.loading .card {
    opacity: 0;
    animation: none;
}

.dashboard-grid.loading .skeleton-card { opacity: 1; }
.skeleton-hidden { display: none; }