/**
 * Guest Post Buddy – Skeleton Loaders
 * CSS for skeleton loading states during AJAX operations
 */

/* =============================================
   SKELETON LOADER BASE STYLES
   ============================================= */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: skeleton-shimmer 1.5s infinite;
}

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

    100% {
        background-position: -200% 0;
    }
}

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

    100% {
        transform: translateX(100%);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    .skeleton,
    .skeleton::after {
        animation: none;
    }

    .skeleton {
        background: #f0f0f0;
    }
}

/* =============================================
   SKELETON COMPONENTS
   ============================================= */

/* Card skeleton */
.skeleton-card {
    background: var(--clr-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 20px;
    margin-bottom: 16px;
}

.skeleton-card-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    flex-shrink: 0;
}

.skeleton-title {
    flex: 1;
}

.skeleton-line {
    height: 12px;
    margin-bottom: 8px;
    border-radius: 6px;
}

.skeleton-line.short {
    width: 60%;
}

.skeleton-line.medium {
    width: 80%;
}

.skeleton-line.long {
    width: 100%;
}

.skeleton-line.xs {
    height: 8px;
    margin-bottom: 6px;
}

.skeleton-line.sm {
    height: 10px;
}

.skeleton-line.lg {
    height: 16px;
}

.skeleton-card-body {
    margin-top: 16px;
}

.skeleton-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.skeleton-grid-item {
    height: 40px;
    border-radius: var(--radius-sm);
}

.skeleton-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.skeleton-button {
    height: 40px;
    border-radius: var(--radius-md);
    flex: 1;
}

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

.skeleton-table-row {
    border-bottom: 1px solid var(--clr-border);
}

.skeleton-table-cell {
    padding: 16px 20px;
    vertical-align: middle;
}

.skeleton-table-cell .skeleton-line {
    margin-bottom: 0;
}

/* Directory grid skeleton */
.skeleton-grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    min-height: 400px;
}

.skeleton-website-card {
    background: var(--clr-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.skeleton-card-top {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--clr-bg);
}

.skeleton-favicon {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    flex-shrink: 0;
}

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

.skeleton-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    padding: 16px 0;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--clr-bg);
}

.skeleton-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.skeleton-metric-label {
    width: 40px;
    height: 8px;
    margin-bottom: 4px;
}

.skeleton-metric-value {
    width: 30px;
    height: 14px;
}

.skeleton-card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.skeleton-price {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.skeleton-actions-horizontal {
    display: flex;
    gap: 8px;
}

.skeleton-action-btn {
    width: 80px;
    height: 36px;
    border-radius: var(--radius-md);
}

/* Dashboard skeleton */
.skeleton-dashboard {
    padding: 20px;
}

.skeleton-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-bottom: 30px;
}

.skeleton-stat-card {
    background: var(--clr-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 20px;
}

.skeleton-stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.skeleton-stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.skeleton-stat-body {
    margin-top: 12px;
}

/* Form skeleton */
.skeleton-form {
    background: var(--clr-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    padding: 24px;
}

.skeleton-form-group {
    margin-bottom: 20px;
}

.skeleton-label {
    width: 100px;
    height: 12px;
    margin-bottom: 8px;
    display: block;
}

.skeleton-input {
    width: 100%;
    height: 48px;
    border-radius: var(--radius-md);
}

.skeleton-textarea {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-md);
}

.skeleton-form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* =============================================
   SKELETON STATES
   ============================================= */
.skeleton-loading {
    position: relative;
    overflow: hidden;
}

.skeleton-loading * {
    visibility: hidden;
}

.skeleton-loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    z-index: 1;
}

.skeleton-loading.skeleton-card::before {
    border-radius: var(--radius-lg);
}

/* =============================================
   MOBILE RESPONSIVE SKELETONS
   ============================================= */
@media (max-width: 768px) {
    .skeleton-grid-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .skeleton-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .skeleton-stats-grid {
        grid-template-columns: 1fr;
    }

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

    .skeleton-card-bottom {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .skeleton-actions-horizontal {
        justify-content: space-between;
    }

    .skeleton-action-btn {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .skeleton-metrics {
        grid-template-columns: 1fr;
    }

    .skeleton-form-actions {
        flex-direction: column;
    }

    .skeleton-button,
    .skeleton-action-btn {
        width: 100%;
    }
}

/* =============================================
   GLOBAL LOADER
   ============================================= */
.gpb-global-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.3s ease;
}

.gpb-loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--clr-border);
    border-top-color: var(--clr-primary);
    border-radius: 50%;
    animation: gpb-spin 1s linear infinite;
    margin-bottom: 16px;
}

.gpb-loader-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--clr-dark);
    letter-spacing: 0.05em;
}

@keyframes gpb-spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Button loading state */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: gpb-spin 1s ease-in-out infinite;
}

.btn-loading.btn-ghost::after {
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--clr-primary);
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--clr-primary);
    animation: gpb-spin 1s ease-in-out infinite;
    vertical-align: middle;
    margin-right: 8px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reduced motion support for global loader */
@media (prefers-reduced-motion: reduce) {

    .gpb-loader-spinner,
    .btn-loading::after,
    .loading-spinner {
        animation: none;
    }

    .gpb-loader-spinner {
        border-top-color: var(--clr-primary);
    }

    .btn-loading::after {
        content: '...';
        border: none;
        width: auto;
        height: auto;
        color: currentColor;
        animation: none;
    }
}