/* 凡人山水 · 统一加载态与骨架屏 (R32)
 * 全局生效（桌面/移动均适用）；深色模式在 [data-bs-theme="dark"] 下自动适配。
 * 仅定义占位/动画样式，不依赖任何 JS 框架。
 */

@keyframes frs-shimmer {
    0%   { background-position: -480px 0; }
    100% { background-position: 480px 0; }
}

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

/* ---- 骨架占位基础 ---- */
.frs-skeleton {
    position: relative;
    overflow: hidden;
    background: #e9edf2;
    background-image: linear-gradient(90deg, #e9edf2 0px, #f5f7fa 80px, #e9edf2 160px);
    background-size: 600px 100%;
    border-radius: 8px;
    animation: frs-shimmer 1.3s ease-in-out infinite;
}

.frs-skeleton-line {
    height: 12px;
    margin: 8px 0;
    border-radius: 6px;
}
.frs-skeleton-line.sm { height: 9px;  width: 55%; }
.frs-skeleton-line.lg { height: 16px; width: 90%; }

.frs-skeleton-circle {
    border-radius: 50% !important;
    flex-shrink: 0;
}

.frs-skeleton-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 10px;
}

/* ---- 卡片骨架 ---- */
.frs-skeleton-card {
    background: var(--white, #fff);
    border: 1px solid rgba(0, 0, 0, .06);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
}
.frs-skeleton-card .frs-sk-img { aspect-ratio: 16 / 9; border-radius: 0; }
.frs-skeleton-card .frs-sk-body { padding: 12px; }

/* ---- 网格容器（与 .row/.col 视觉对齐） ---- */
.frs-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

/* ---- 居中旋转 spinner ---- */
.frs-spinner-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 3rem 1rem;
    color: var(--text, #666);
    text-align: center;
}
.frs-spinner {
    width: 34px;
    height: 34px;
    border: 3px solid rgba(45, 138, 110, .2);
    border-top-color: var(--primary, #2d8a6e);
    border-radius: 50%;
    animation: frs-spin .8s linear infinite;
}

/* ---- 错误 / 空态 ---- */
.frs-error-box,
.frs-empty-box {
    border-radius: 12px;
    padding: 1rem 1.2rem;
    margin: 0.5rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.frs-error-box {
    background: #fdecea;
    color: #c0392b;
}
.frs-empty-box {
    background: transparent;
    color: var(--text, #666);
    justify-content: center;
}
.frs-error-box .frs-retry {
    margin-left: auto;
    background: var(--primary, #2d8a6e);
    color: #fff;
    border: 0;
    border-radius: 20px;
    padding: 4px 14px;
    cursor: pointer;
    font-size: .85rem;
}
.frs-error-box .frs-retry:hover { filter: brightness(1.05); }

/* ---- 尊重「减少动效」偏好 ---- */
@media (prefers-reduced-motion: reduce) {
    .frs-skeleton { animation: none; background-image: none; background: #e9edf2; }
    .frs-spinner  { animation: none; }
}

/* ---- 深色模式适配 ---- */
[data-bs-theme="dark"] .frs-skeleton {
    background: #2a2f3a;
    background-image: linear-gradient(90deg, #2a2f3a 0px, #353b47 80px, #2a2f3a 160px);
}
[data-bs-theme="dark"] .frs-error-box { background: #3a2326; color: #ff9b95; }
[data-bs-theme="dark"] .frs-empty-box { color: #b9c0cc; }
[data-bs-theme="dark"] .frs-spinner {
    border-color: rgba(255, 255, 255, .18);
    border-top-color: #4cc4a0;
}