/**
 * V8.20 骨架屏样式
 * 提升感知性能，减少白屏时间
 */

/* ==================== 动画 ==================== */

@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* ==================== 基础样式 ==================== */

.shimmer {
    animation: shimmer 1.5s infinite;
    background: linear-gradient(
        to right,
        color-mix(in srgb, var(--cyan) 8%, transparent) 0%,
        color-mix(in srgb, var(--cyan) 15%, transparent) 20%,
        color-mix(in srgb, var(--cyan) 8%, transparent) 40%,
        color-mix(in srgb, var(--cyan) 8%, transparent) 100%
    );
    background-size: 800px 104px;
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

.skeleton-active {
    pointer-events: none;
    user-select: none;
}

/* ==================== 实体表格骨架屏 ==================== */

.entity-table-skeleton {
    width: 100%;
    padding: 20px;
}

.skeleton-row {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
    align-items: center;
}

.skeleton-cell {
    height: 32px;
    border-radius: 4px;
    background: color-mix(in srgb, var(--cyan) 10%, transparent);
}

/* 不同宽度的单元格 */
.skeleton-cell.xs { width: 40px; }   /* 序号 */
.skeleton-cell.sm { width: 80px; }   /* 状态、类型 */
.skeleton-cell.md { width: 120px; }  /* 标签、余额 */
.skeleton-cell.lg { width: 200px; }  /* 地址 */
.skeleton-cell.xl { flex: 1; }       /* 弹性宽度 */

/* 表头骨架 */
.skeleton-table-header {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    padding: 12px 0;
    border-bottom: 1px solid color-mix(in srgb, var(--cyan) 15%, transparent);
}

.skeleton-table-header .skeleton-cell {
    height: 20px;
    opacity: 0.7;
}

/* ==================== Alerts 骨架屏 ==================== */

.alerts-skeleton {
    padding: 20px;
}

.skeleton-alert-card {
    background: color-mix(in srgb, var(--cyan) 5%, transparent);
    border: 1px solid color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

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

.skeleton-alert-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--cyan) 20%, transparent);
    flex-shrink: 0;
}

.skeleton-alert-text {
    flex: 1;
    height: 16px;
    border-radius: 4px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
}

.skeleton-alert-text.short {
    width: 120px;
}

.skeleton-alert-body {
    height: 40px;
    border-radius: 4px;
    background: color-mix(in srgb, var(--cyan) 10%, transparent);
    margin-top: 8px;
}

/* ==================== 图表骨架屏 ==================== */

.chart-skeleton {
    width: 100%;
    height: 300px;
    position: relative;
    background: color-mix(in srgb, var(--cyan) 5%, transparent);
    border: 1px solid color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 8px;
    overflow: hidden;
    padding: 20px;
}

.skeleton-chart-title {
    width: 200px;
    height: 24px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 4px;
    margin-bottom: 20px;
}

.skeleton-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 200px;
    gap: 8px;
}

.skeleton-bar {
    flex: 1;
    max-width: 60px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 4px 4px 0 0;
}

.skeleton-bar:nth-child(1) { height: 60%; }
.skeleton-bar:nth-child(2) { height: 80%; }
.skeleton-bar:nth-child(3) { height: 40%; }
.skeleton-bar:nth-child(4) { height: 90%; }
.skeleton-bar:nth-child(5) { height: 50%; }
.skeleton-bar:nth-child(6) { height: 70%; }
.skeleton-bar:nth-child(7) { height: 85%; }
.skeleton-bar:nth-child(8) { height: 45%; }

/* 图表图例骨架 */
.skeleton-chart-legend {
    display: flex;
    gap: 16px;
    margin-top: 16px;
}

.skeleton-legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.skeleton-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    background: color-mix(in srgb, var(--cyan) 20%, transparent);
}

.skeleton-legend-text {
    width: 60px;
    height: 14px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 3px;
}

/* ==================== 统计卡片骨架屏 ==================== */

.stats-card-skeleton {
    background: color-mix(in srgb, var(--cyan) 5%, transparent);
    border: 1px solid color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 8px;
    padding: 20px;
}

.skeleton-stat-label {
    width: 100px;
    height: 14px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 3px;
    margin-bottom: 12px;
}

.skeleton-stat-value {
    width: 150px;
    height: 32px;
    background: color-mix(in srgb, var(--cyan) 20%, transparent);
    border-radius: 4px;
}

/* ==================== 列表骨架屏 ==================== */

.list-skeleton {
    padding: 16px;
}

.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    margin-bottom: 8px;
    background: color-mix(in srgb, var(--cyan) 5%, transparent);
    border-radius: 6px;
}

.skeleton-list-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    flex-shrink: 0;
}

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

.skeleton-list-title {
    width: 60%;
    height: 16px;
    background: color-mix(in srgb, var(--cyan) 15%, transparent);
    border-radius: 3px;
    margin-bottom: 8px;
}

.skeleton-list-subtitle {
    width: 40%;
    height: 12px;
    background: color-mix(in srgb, var(--cyan) 10%, transparent);
    border-radius: 3px;
}

/* ==================== 响应式 ==================== */

@media (max-width: 768px) {
    .skeleton-row {
        flex-wrap: wrap;
    }

    .skeleton-cell.lg {
        width: 100%;
    }

    .skeleton-bars {
        gap: 4px;
    }

    .skeleton-bar {
        max-width: 40px;
    }
}

/* ==================== 暗色主题适配 ==================== */

@media (prefers-color-scheme: dark) {
    .skeleton-cell,
    .skeleton-alert-card,
    .skeleton-alert-text,
    .skeleton-bar {
        background: color-mix(in srgb, var(--text) 5%, transparent);
    }

    .shimmer {
        background: linear-gradient(
            to right,
            color-mix(in srgb, var(--text) 3%, transparent) 0%,
            color-mix(in srgb, var(--text) 8%, transparent) 20%,
            color-mix(in srgb, var(--text) 3%, transparent) 40%,
            color-mix(in srgb, var(--text) 3%, transparent) 100%
        );
    }
}

/* ==================== 加载指示器 ==================== */

.skeleton-loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    color: color-mix(in srgb, var(--cyan) 60%, transparent);
    font-size: 14px;
}

.skeleton-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid color-mix(in srgb, var(--cyan) 20%, transparent);
    border-top-color: color-mix(in srgb, var(--cyan) 80%, transparent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}