/* ==========================================================================
   Skeleton Loading Component Library - EasyRentalGuru
   Updated for Dark Mode Support
   ========================================================================== */

/* Shimmer Animation Keyframes */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Base Skeleton Styles */
.skeleton {
    display: inline-block;
    background: linear-gradient(
        90deg,
        var(--color-bg-tertiary, #f1f5f9) 25%,
        var(--color-bg-secondary, #f8fafc) 50%,
        var(--color-bg-tertiary, #f1f5f9) 75%
    );
    background-size: 200% 100%;
    border-radius: 4px;
    vertical-align: middle;
}

/* Dark mode skeleton gradient */
html.dark .skeleton,
[data-theme="dark"] .skeleton {
    background: linear-gradient(
        90deg,
        #1e293b 25%,
        #334155 50%,
        #1e293b 75%
    );
    background-size: 200% 100%;
}

.skeleton.animated {
    animation: shimmer 1.5s infinite linear;
}

/* Skeleton Type Variants */
.skeleton-text {
    height: 16px;
    width: 100%;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 100%;
    margin-bottom: 12px;
}

.skeleton-image {
    height: 200px;
    width: 100%;
    border-radius: var(--radius-md, 12px);
}

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

/* Circle Modifier */
.skeleton-circle {
    border-radius: 50% !important;
}

/* Skeleton Card */
.skeleton-card {
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    overflow: hidden;
    box-shadow: var(--shadow-md, 0 4px 6px -1px rgb(0 0 0 / 0.1));
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-card,
[data-theme="dark"] .skeleton-card {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-card .skeleton-image {
    border-radius: 0;
    height: 200px;
}

.skeleton-card-body {
    padding: 20px;
}

.skeleton-card-body .skeleton-text,
.skeleton-card-body .skeleton-title {
    margin-bottom: 12px;
}

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

/* Skeleton Grid */
.skeleton-grid {
    display: grid;
    grid-template-columns: repeat(var(--columns, 3), 1fr);
    gap: 24px;
}

@media (max-width: 992px) {
    .skeleton-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .skeleton-grid {
        grid-template-columns: 1fr;
    }
}

/* Skeleton Table */
.skeleton-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-md, 12px);
    overflow: hidden;
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-table,
[data-theme="dark"] .skeleton-table {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-table thead {
    background: var(--color-bg-secondary, #f8fafc);
}

html.dark .skeleton-table thead,
[data-theme="dark"] .skeleton-table thead {
    background: var(--color-bg-tertiary, #334155);
}

.skeleton-table th,
.skeleton-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-table th,
html.dark .skeleton-table td,
[data-theme="dark"] .skeleton-table th,
[data-theme="dark"] .skeleton-table td {
    border-color: var(--color-border, #334155);
}

.skeleton-table th {
    font-weight: 600;
}

.skeleton-table th .skeleton,
.skeleton-table td .skeleton {
    margin-bottom: 0;
}

.skeleton-table tbody tr:last-child td {
    border-bottom: none;
}

/* Skeleton KPI Card */
.skeleton-kpi-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    box-shadow: var(--shadow-md, 0 4px 6px -1px rgb(0 0 0 / 0.1));
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-kpi-card,
[data-theme="dark"] .skeleton-kpi-card {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-kpi-icon {
    flex-shrink: 0;
}

.skeleton-kpi-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-kpi-content .skeleton {
    margin-bottom: 0;
}

/* Skeleton KPI Grid (Multiple Cards) */
.skeleton-kpi-grid {
    display: grid;
    grid-template-columns: repeat(var(--columns, 4), 1fr);
    gap: 20px;
}

@media (max-width: 1200px) {
    .skeleton-kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .skeleton-kpi-grid {
        grid-template-columns: 1fr;
    }
}

/* Skeleton List */
.skeleton-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-md, 12px);
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-list-item,
[data-theme="dark"] .skeleton-list-item {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

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

.skeleton-list-content .skeleton {
    margin-bottom: 8px;
}

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

/* Skeleton Form */
.skeleton-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skeleton-form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-form-group .skeleton:first-child {
    height: 14px;
    width: 120px;
}

.skeleton-form-group .skeleton:last-child {
    height: 48px;
    width: 100%;
    border-radius: var(--radius-sm, 8px);
}

/* Skeleton Header */
.skeleton-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    margin-bottom: 24px;
}

.skeleton-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.skeleton-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Skeleton Property Card (Specialized for Property Listings) */
.skeleton-property-card {
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    overflow: hidden;
    box-shadow: var(--shadow-md, 0 4px 6px -1px rgb(0 0 0 / 0.1));
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-property-card,
[data-theme="dark"] .skeleton-property-card {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-property-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.skeleton-property-badge {
    position: absolute;
    top: 12px;
    left: 12px;
}

.skeleton-property-wishlist {
    position: absolute;
    top: 12px;
    right: 12px;
}

.skeleton-property-content {
    padding: 20px;
}

.skeleton-property-location {
    margin-bottom: 8px;
}

.skeleton-property-title {
    margin-bottom: 12px;
}

.skeleton-property-details {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.skeleton-property-detail {
    display: flex;
    align-items: center;
    gap: 6px;
}

.skeleton-property-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

/* Skeleton Chart/Graph */
.skeleton-chart {
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    padding: 24px;
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-chart,
[data-theme="dark"] .skeleton-chart {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.skeleton-chart-body {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 200px;
    gap: 12px;
}

.skeleton-chart-bar {
    flex: 1;
    border-radius: 4px 4px 0 0;
    min-height: 40px;
}

/* Skeleton Timeline */
.skeleton-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.skeleton-timeline-item {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-left: 2px solid var(--color-border, #e2e8f0);
    margin-left: 12px;
    padding-left: 24px;
    position: relative;
}

html.dark .skeleton-timeline-item,
[data-theme="dark"] .skeleton-timeline-item {
    border-left-color: var(--color-border, #334155);
}

.skeleton-timeline-dot {
    position: absolute;
    left: -7px;
    top: 24px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.skeleton-timeline-content {
    flex: 1;
}

/* Pulse Animation (Alternative to shimmer) */
@keyframes skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.skeleton-pulse {
    animation: skeleton-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .skeleton,
    .skeleton.animated {
        animation: none;
        background: var(--color-bg-tertiary, #f1f5f9);
    }
    
    html.dark .skeleton,
    html.dark .skeleton.animated,
    [data-theme="dark"] .skeleton,
    [data-theme="dark"] .skeleton.animated {
        background: #1e293b;
    }
}

/* ============================================
   Component Specific Skeletons
   ============================================ */

/* Dashboard Stats Card */
.skeleton-stat-card {
    padding: 24px;
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-stat-card,
[data-theme="dark"] .skeleton-stat-card {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-stat-value {
    height: 36px;
    width: 60%;
    margin-bottom: 8px;
}

.skeleton-stat-label {
    height: 16px;
    width: 40%;
}

/* Calendar Skeleton */
.skeleton-calendar {
    background: var(--color-bg-surface, #ffffff);
    border-radius: var(--radius-lg, 16px);
    padding: 20px;
    border: 1px solid var(--color-border, #e2e8f0);
}

html.dark .skeleton-calendar,
[data-theme="dark"] .skeleton-calendar {
    background: var(--color-bg-secondary, #1e293b);
    border-color: var(--color-border, #334155);
}

.skeleton-calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.skeleton-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.skeleton-calendar-day {
    aspect-ratio: 1;
    border-radius: var(--radius-sm, 6px);
}

/* List Item Variations */
.skeleton-list-item-compact {
    padding: 12px 16px;
}

.skeleton-list-item-expanded {
    padding: 20px;
}

.skeleton-list-item-interactive:hover {
    background: var(--color-bg-hover, #f1f5f9);
}

html.dark .skeleton-list-item-interactive:hover,
[data-theme="dark"] .skeleton-list-item-interactive:hover {
    background: var(--color-bg-tertiary, #334155);
}