/**
 * Skeleton Loaders
 * Modern loading placeholders
 */

/* Base Skeleton Styles */
.sk-skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #f8f8f8 50%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: sk-skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

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

/* Skeleton Variants */
.sk-skeleton-text {
    height: 16px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.sk-skeleton-text.sk-skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 12px;
}

.sk-skeleton-text.sk-skeleton-subtitle {
    height: 18px;
    width: 40%;
    margin-bottom: 16px;
}

.sk-skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.sk-skeleton-avatar.sk-skeleton-avatar-lg {
    width: 80px;
    height: 80px;
}

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

.sk-skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: 8px;
}

.sk-skeleton-image.sk-skeleton-image-lg {
    height: 300px;
}

.sk-skeleton-image.sk-skeleton-image-sm {
    height: 120px;
}

.sk-skeleton-button {
    height: 40px;
    width: 120px;
    border-radius: 8px;
}

/* School Card Skeleton */
.sk-skeleton-school-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

.sk-skeleton-school-card .sk-skeleton-image {
    margin-bottom: 16px;
}

.sk-skeleton-school-card .sk-skeleton-title {
    margin-bottom: 8px;
}

.sk-skeleton-school-card .sk-skeleton-text {
    width: 100%;
    margin-bottom: 6px;
}

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

/* School List Skeleton */
.sk-skeleton-schools-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

/* Review Skeleton */
.sk-skeleton-review {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    margin-bottom: 16px;
}

.sk-skeleton-review-content {
    flex: 1;
}

.sk-skeleton-review-content .sk-skeleton-text:first-child {
    width: 30%;
    margin-bottom: 12px;
}

.sk-skeleton-review-content .sk-skeleton-text {
    width: 100%;
    margin-bottom: 6px;
}

.sk-skeleton-review-content .sk-skeleton-text:last-child {
    width: 70%;
}

/* Table Row Skeleton */
.sk-skeleton-table-row {
    display: flex;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.sk-skeleton-table-row .sk-skeleton-avatar {
    margin-right: 16px;
}

.sk-skeleton-table-cell {
    flex: 1;
}

.sk-skeleton-table-cell .sk-skeleton-text {
    width: 80%;
}

/* Analytics Card Skeleton */
.sk-skeleton-analytics-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.sk-skeleton-analytics-card .sk-skeleton-text:first-child {
    width: 40%;
    height: 14px;
    margin-bottom: 12px;
}

.sk-skeleton-analytics-card .sk-skeleton-text:last-child {
    width: 60%;
    height: 32px;
}

/* Loading Container */
.sk-loading-container {
    position: relative;
    min-height: 200px;
}

.sk-loading-container.sk-is-loading {
    pointer-events: none;
}

/* Fade In Animation when content loads */
.sk-content-loaded {
    animation: sk-fade-in 0.3s ease-in;
}

@keyframes sk-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .sk-skeleton {
        background: linear-gradient(
            90deg,
            #2a2a2a 0%,
            #353535 50%,
            #2a2a2a 100%
        );
    }

    .sk-skeleton-school-card,
    .sk-skeleton-review,
    .sk-skeleton-analytics-card {
        background: #1a1a1a;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .sk-skeleton-schools-list {
        grid-template-columns: 1fr;
    }

    .sk-skeleton-school-card {
        padding: 16px;
    }

    .sk-skeleton-review {
        flex-direction: column;
    }
}