.docs-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.docs-sidebar {
    position: sticky;
    top: 20px;
    padding: 20px;
    border-radius: 28px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* 侧边栏滚动条样式 */
.docs-sidebar::-webkit-scrollbar {
    width: 6px;
}

.docs-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.docs-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.docs-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

.docs-sidebar__header {
    display: grid;
    gap: 12px;
    margin-bottom: 22px;
}

.tab-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tab-button {
    padding: 0 14px;
    min-height: 40px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.tab-button.is-active {
    color: #fff;
    background: linear-gradient(135deg, var(--brand), var(--brand-cool));
    box-shadow: 0 14px 26px rgba(244, 143, 177, 0.18);
}

.sidebar-stack {
    display: grid;
    gap: 10px;
}

.sidebar-item {
    padding: 0;
    border-radius: 18px;
    overflow: hidden;
}

.sidebar-item__title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-weight: 700;
    width: 100%;
    padding: 14px 16px;
    text-align: left;
}

.sidebar-item__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(244, 143, 177, 0.12);
    color: var(--brand-cool);
    font-size: 0.85rem;
}

.sidebar-item.is-active {
    border-color: rgba(244, 143, 177, 0.24);
    background: linear-gradient(135deg, rgba(244, 143, 177, 0.12), rgba(144, 202, 249, 0.12));
}

.sidebar-sublist {
    display: grid;
    gap: 8px;
    margin: 0 14px 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(148, 163, 184, 0.18);
}

.sidebar-subitem {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    border-radius: 14px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid transparent;
}

.sidebar-subitem:hover,
.sidebar-subitem.is-active {
    transform: translateX(4px);
    border-color: rgba(144, 202, 249, 0.18);
    color: var(--brand-cool);
}

.docs-main {
    display: grid;
    gap: 20px;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 20px;
    border-radius: 24px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.toolbar__summary {
    display: grid;
    gap: 4px;
}

.toolbar__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.document-stack {
    display: grid;
    gap: 14px;
}

.doc-item {
    display: grid;
    gap: 12px;
    padding: 18px 20px;
    overflow: hidden;
}

.doc-item__title {
    margin: 0;
    font-size: 1.04rem;
    font-weight: 700;
}

.doc-item__summary {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.94rem;
}

.doc-item__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.doc-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge--neutral {
    background: rgba(148, 163, 184, 0.12);
    color: var(--text-secondary);
}

.status-badge--success {
    background: rgba(4, 120, 87, 0.12);
    color: var(--success);
}

.status-badge--warning {
    background: rgba(217, 119, 6, 0.12);
    color: var(--warning);
}

.status-badge--danger {
    background: rgba(220, 38, 38, 0.12);
    color: var(--danger);
}

@media (max-width: 980px) {
    .docs-layout {
        grid-template-columns: 1fr;
    }

    .docs-sidebar {
        position: static;
    }
}

/* ============ 搜索栏 ============ */
.search-section {
    padding: 16px 20px;
    border-radius: 24px;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
}

.search-bar__icon {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    pointer-events: none;
}

.search-bar__input {
    flex: 1;
    padding: 12px 14px 12px 40px;
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    background: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-bar__input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(244, 143, 177, 0.15);
}

.search-bar__input::placeholder {
    color: var(--text-muted);
}

.search-bar__clear {
    position: absolute;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 1rem;
}

.search-bar__clear:hover {
    background: rgba(244, 143, 177, 0.1);
    color: var(--brand);
}

/* ============ 标签筛选区 ============ */
.tag-filter-area {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(148, 163, 184, 0.12);
}

.tag-filter-area__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.tag-filter-area__label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag-filter-area__clear {
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(244, 143, 177, 0.1);
    color: var(--brand);
    border: 1px solid rgba(244, 143, 177, 0.2);
    cursor: pointer;
    transition: all 0.2s;
}

.tag-filter-area__clear:hover {
    background: rgba(244, 143, 177, 0.2);
}

.tag-filter-area__body {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    padding: 6px 2px; /* 增加上下 padding，避免浮动动画被裁剪 */
}

.tag-filter-area__body::-webkit-scrollbar {
    width: 4px;
}

.tag-filter-area__body::-webkit-scrollbar-track {
    background: transparent;
}

.tag-filter-area__body::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.2);
    border-radius: 2px;
}

/* ============ 标签 pill ============ */
.tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s;
    will-change: transform;
    border: 1px solid rgba(148, 163, 184, 0.15);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text-secondary);
    white-space: nowrap;
}

.tag-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(244, 143, 177, 0.10), 0 0 0 1px rgba(244, 143, 177, 0.15);
    border-color: var(--brand);
}

.tag-pill.is-selected {
    border-color: var(--brand);
    background: rgba(244, 143, 177, 0.12);
    color: var(--brand-strong);
    box-shadow: 0 0 0 1px rgba(244, 143, 177, 0.25);
}

.tag-pill.is-selected:hover {
    transform: translateY(-2px) scale(1.04);
}

.tag-pill:active {
    transform: scale(0.95);
}

.tag-pill__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.12);
    font-size: 0.72rem;
    font-weight: 600;
}

.tag-pill.is-selected .tag-pill__count {
    background: rgba(244, 143, 177, 0.15);
}

/* ============ 标签匹配高亮 ============ */
.tag--matched {
    border-color: var(--brand) !important;
    background: rgba(244, 143, 177, 0.15) !important;
    color: var(--brand-strong) !important;
}
/* ── 骨架屏加载占位 ── */
.loading-skeleton {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 8px 0;
}
.loading-skeleton__block {
    height: 16px;
    border-radius: 8px;
    background: linear-gradient(
        90deg,
        rgba(148,163,184,0.06) 25%,
        rgba(148,163,184,0.16) 40%,
        rgba(148,163,184,0.06) 55%
    );
    background-size: 400% 100%;
    animation: shimmer 1.8s ease-in-out infinite;
}
.loading-skeleton__block--w60 { width: 60%; }
.loading-skeleton__block--w75 { width: 75%; }
.loading-skeleton__block--w85 { width: 85%; }
.loading-skeleton__block--w40 { width: 40%; }
.loading-skeleton__block--h24 { height: 24px; }
.loading-skeleton__block--h32 { height: 32px; border-radius: 12px; }