/* ============================================
   Loading Skeletons - Modern placeholder UI
   ============================================ */

/* Base Skeleton */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(31, 41, 55, 0.6) 25%,
        rgba(55, 65, 81, 0.4) 50%,
        rgba(31, 41, 55, 0.6) 75%
    );
    background-size: 200% 100%;
    animation: skeletonPulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

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

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

.skeleton-text:last-child {
    margin-bottom: 0;
}

.skeleton-text-sm {
    height: 0.75rem;
}

.skeleton-text-lg {
    height: 1.25rem;
}

.skeleton-text-xl {
    height: 1.5rem;
}

/* Skeleton Title */
.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 0.75rem;
}

/* Skeleton Heading */
.skeleton-heading {
    height: 1.25rem;
    width: 40%;
    margin-bottom: 1rem;
}

/* Skeleton Paragraph */
.skeleton-paragraph {
    height: 0.875rem;
    width: 100%;
    margin-bottom: 0.5rem;
}

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

/* Skeleton Card */
.skeleton-card {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(55, 65, 81, 0.5);
    border-radius: var(--radius-md);
    padding: 1.25rem;
}

.skeleton-card .skeleton {
    background: linear-gradient(
        90deg,
        rgba(55, 65, 81, 0.4) 25%,
        rgba(75, 85, 99, 0.3) 50%,
        rgba(55, 65, 81, 0.4) 75%
    );
    background-size: 200% 100%;
}

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

.skeleton-avatar-sm {
    width: 32px;
    height: 32px;
}

.skeleton-avatar-lg {
    width: 56px;
    height: 56px;
}

/* Skeleton Thumbnail */
.skeleton-thumbnail {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
}

/* Skeleton Button */
.skeleton-button {
    height: 2.25rem;
    width: 100px;
    border-radius: var(--radius-pill);
}

.skeleton-button-sm {
    height: 1.75rem;
    width: 80px;
}

.skeleton-button-lg {
    height: 2.75rem;
    width: 120px;
}

/* Skeleton Badge */
.skeleton-badge {
    height: 1.25rem;
    width: 60px;
    border-radius: var(--radius-pill);
}

/* Skeleton List */
.skeleton-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skeleton-list-item .skeleton-avatar {
    flex-shrink: 0;
}

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

/* Skeleton Table */
.skeleton-table {
    width: 100%;
}

.skeleton-table-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(55, 65, 81, 0.3);
}

.skeleton-table-row:last-child {
    border-bottom: none;
}

/* Skeleton Grid */
.skeleton-grid {
    display: grid;
    gap: 1rem;
}

.skeleton-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.skeleton-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.skeleton-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Skeleton Stat Card */
.skeleton-stat-card {
    text-align: center;
    padding: 1.25rem;
}

.skeleton-stat-card .skeleton-value {
    height: 2rem;
    width: 60px;
    margin: 0 auto 0.5rem;
}

.skeleton-stat-card .skeleton-label {
    height: 0.75rem;
    width: 80px;
    margin: 0 auto;
}

/* Skeleton Matrix Cell */
.skeleton-matrix-cell {
    width: 100%;
    height: 60px;
    border-radius: var(--radius-xs);
}

/* Skeleton Report Card */
.skeleton-report-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
}

.skeleton-report-card .skeleton-badge {
    flex-shrink: 0;
}

.skeleton-report-card .skeleton-content {
    flex: 1;
}

/* Loading Container */
.loading-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.loading-container-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    gap: 1rem;
}

/* Skeleton with Delay Stagger */
.skeleton-stagger-1 {
    animation-delay: 0s;
}

.skeleton-stagger-2 {
    animation-delay: 0.1s;
}

.skeleton-stagger-3 {
    animation-delay: 0.2s;
}

.skeleton-stagger-4 {
    animation-delay: 0.3s;
}

.skeleton-stagger-5 {
    animation-delay: 0.4s;
}