/* 知梯管理后台 · levels.css — 自 index.html 拆分（工程化重构 v1.0） */
/* A3 层级管理 */
.tree-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--neutral-200);border-radius:8px;margin-bottom:8px;background:#fff}
.tree-item:hover{border-color:var(--brand-300)}
.tree-item .drag{color:var(--neutral-400);cursor:grab}
.tree-item .idx{width:28px;height:28px;border-radius:6px;background:var(--brand-50);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.tree-item .info{flex:1}
.tree-item .info .t{font-size:14px;font-weight:600;color:var(--neutral-900)}
.tree-item .info .s{font-size:12px;color:var(--neutral-600);margin-top:2px}
.tree-item .actions{display:flex;gap:6px}
.tree-item .actions button{width:30px;height:30px;border-radius:6px;border:1px solid var(--neutral-200);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--neutral-600)}
.tree-item .actions button:hover{background:var(--neutral-100)}

/* 层级管理 */
.lvl-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap;gap:8px}
.lvl-filter{display:flex;gap:8px;flex-wrap:wrap}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:10px;color:var(--neutral-400);pointer-events:none}
.search-box .input{padding-left:32px;width:200px}
.lvl-stats{font-size:12px;color:var(--neutral-600);margin-bottom:12px;padding:8px 12px;background:var(--brand-50);border-radius:6px;display:flex;align-items:center;gap:6px}
.lvl-stats svg{width:14px;height:14px;color:var(--brand-600)}
.lvl-row{padding:12px;border:1px solid var(--neutral-200);border-radius:8px;margin-bottom:8px;background:#fff;transition:.15s}
.lvl-row:hover{border-color:var(--brand-300);box-shadow:0 2px 8px rgba(7,26,29,.06)}
.lvl-row.disabled{opacity:.55;background:var(--neutral-50)}
.lvl-row.expanded{border-color:var(--brand-300)}
.lvl-main{display:flex;align-items:center;gap:10px}
.lvl-row .drag{color:var(--neutral-400);cursor:grab;flex-shrink:0;font-size:14px;letter-spacing:-2px}
.lvl-row .idx{width:30px;height:30px;border-radius:8px;background:var(--brand-50);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.lvl-row .idx.locked{background:var(--neutral-100);color:var(--neutral-600)}
.lvl-row .idx.watching{background:var(--color-warning-50);color:var(--color-warning-700)}
.lvl-row .info{flex:1;min-width:0}
.lvl-row .info .t{font-size:14px;font-weight:600;color:var(--neutral-900);display:flex;align-items:center;gap:6px}
.lvl-row .info .t svg{flex-shrink:0;color:var(--brand-600)}
.lvl-row .info .s{font-size:12px;color:var(--neutral-600);margin-top:3px}
.lvl-actions{display:flex;gap:4px;flex-shrink:0}
.lvl-actions button{width:30px;height:30px;border-radius:6px;border:1px solid var(--neutral-200);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--neutral-600);transition:.15s}
.lvl-actions button:hover{background:var(--neutral-100);color:var(--neutral-900)}
.lvl-actions button.danger:hover{background:var(--color-danger-50);color:var(--color-danger-600);border-color:var(--color-danger-600)}
.lvl-actions button:disabled{opacity:.3;cursor:not-allowed}
.lvl-detail{margin-top:12px;padding:14px 16px;background:var(--neutral-50);border:1px solid var(--neutral-200);border-radius:8px}
.lvl-detail .dl{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}
.lvl-detail .dl .di .k{font-size:11px;color:var(--neutral-600);margin-bottom:3px;display:flex;align-items:center;gap:4px}
.lvl-detail .dl .di .v{color:var(--neutral-800);font-size:13px;word-break:break-all}
.lvl-detail .dl .di .v.mono{font-family:var(--font-mono);font-size:12px}
.lvl-detail .dl .di.full{grid-column:1/-1}
.lvl-detail .article-preview{padding:10px 12px;background:#fff;border:1px solid var(--neutral-200);border-radius:6px;line-height:1.7;color:var(--neutral-700);max-height:100px;overflow-y:auto;font-size:13px}
.lvl-detail .task-mini{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding-top:12px;border-top:1px solid var(--neutral-200)}
.lvl-detail .task-mini .lbl{font-size:11px;color:var(--neutral-600);margin-right:4px}
.lvl-add-btn{width:100%;justify-content:center;border-style:dashed;margin-top:8px;background:transparent}
.lvl-add-btn:hover{background:var(--brand-50);border-color:var(--brand-400);color:var(--brand-700)}
.empty-state{text-align:center;padding:48px 20px;color:var(--neutral-600)}
.empty-state svg{width:48px;height:48px;color:var(--neutral-300);margin-bottom:12px}
.empty-state .et{font-size:14px;font-weight:600;color:var(--neutral-700)}
.empty-state .es{font-size:12px;margin-top:4px}

/* 章节分组 */
.chapter-group{margin-bottom:16px;border:1px solid var(--neutral-200);border-radius:10px;overflow:hidden}
.chapter-group:last-child{margin-bottom:0}
.chapter-head{display:flex;align-items:center;gap:10px;padding:10px 14px;background:linear-gradient(135deg,var(--brand-50),var(--neutral-50));cursor:pointer;user-select:none;transition:.15s;border-bottom:1px solid transparent}
.chapter-head:hover{background:linear-gradient(135deg,var(--brand-100),var(--brand-50))}
.chapter-head.collapsed{border-bottom-color:transparent}
.chapter-head .ch-icon{width:32px;height:32px;border-radius:8px;background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.chapter-head .ch-name{font-size:14px;font-weight:700;color:var(--brand-800);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chapter-head .ch-name .ch-tag{font-size:11px;font-weight:400;color:var(--neutral-500);margin-left:8px}
.chapter-head .ch-meta{display:flex;align-items:center;gap:8px;flex-shrink:0}
.chapter-head .ch-count{font-size:12px;color:var(--neutral-600);background:rgba(255,255,255,.7);padding:2px 8px;border-radius:20px;white-space:nowrap}
.chapter-head .ch-toggle{width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:var(--neutral-500);transition:.2s}
.chapter-head.collapsed .ch-toggle{transform:rotate(-90deg)}
.chapter-body{padding:8px}
.chapter-body .lvl-row{margin-bottom:6px}
.chapter-body .lvl-row:last-child{margin-bottom:0}
.chapter-empty{text-align:center;padding:20px;color:var(--neutral-400);font-size:13px}
.chapter-add-btn{width:100%;justify-content:center;border-style:dashed;margin-top:6px;background:transparent}
.chapter-add-btn:hover{background:var(--brand-50);border-color:var(--brand-400);color:var(--brand-700)}
/* 未分类组 */
.uncategorized-head{background:var(--neutral-50)}
.uncategorized-head .ch-icon{background:var(--neutral-300);color:var(--neutral-700)}
.uncategorized-head .ch-name{color:var(--neutral-600)}
/* 章节管理弹窗 */
.ch-mgr-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.ch-mgr-row{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--neutral-200);border-radius:8px;background:#fff;transition:.15s}
.ch-mgr-row:hover{border-color:var(--brand-300)}
.ch-mgr-row .ch-idx{width:28px;height:28px;border-radius:6px;background:var(--brand-50);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.ch-mgr-row .ch-input{flex:1;border:none;background:transparent;font-size:14px;color:var(--neutral-900);padding:4px 6px;border-radius:4px;outline:none}
.ch-mgr-row .ch-input:focus{background:var(--brand-50)}
.ch-mgr-row .ch-acts{display:flex;gap:4px;flex-shrink:0}
.ch-mgr-row .ch-acts button{width:28px;height:28px;border-radius:6px;border:1px solid var(--neutral-200);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--neutral-600);transition:.15s}
.ch-mgr-row .ch-acts button:hover{background:var(--neutral-100);color:var(--neutral-900)}
.ch-mgr-row .ch-acts button.danger:hover{background:var(--color-danger-50);color:var(--color-danger-600);border-color:var(--color-danger-600)}
.ch-mgr-add{display:flex;gap:8px}
.ch-mgr-add .input{flex:1}
/* 章节选择器 */
.chapter-select-wrap{display:flex;gap:8px;align-items:center}
.chapter-select-wrap .input{flex:1}
.chapter-select-wrap .btn{flex-shrink:0;white-space:nowrap}

/* 层级管理 - 模态框增强 */
.modal-wide{width:680px!important;max-width:100%!important}
.upload-row{display:flex;gap:8px;align-items:stretch}
.upload-row .input{flex:1}
.upload-btn{white-space:nowrap;flex-shrink:0;display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;border-radius:8px;border:1px dashed var(--brand-400);background:var(--brand-50);color:var(--brand-700);font-size:13px;font-weight:600;cursor:pointer;transition:.15s;font-family:var(--font-sans)}
.upload-btn:hover{background:var(--brand-100);border-style:solid}
.upload-btn.uploading{border-color:var(--color-warning-600);background:var(--color-warning-50);color:var(--color-warning-700);pointer-events:none}
.upload-btn.done{border-color:var(--color-success-600);background:var(--color-success-50);color:var(--color-success-700)}
.upload-progress{height:4px;background:var(--neutral-200);border-radius:2px;margin-top:8px;overflow:hidden;display:none}
.upload-progress.show{display:block}
.upload-progress .bar{height:100%;background:var(--brand-600);border-radius:2px;width:0;transition:width .3s}
.task-check-list{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.task-check{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--neutral-300);border-radius:8px;cursor:pointer;transition:.15s;font-size:13px}
.task-check:hover{border-color:var(--brand-300);background:var(--brand-50)}
.task-check input{display:none}
.task-check .tc-ic{width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.task-check .tc-label{font-weight:600;color:var(--neutral-800)}
.task-check .tc-sub{font-size:11px;color:var(--neutral-600);margin-top:1px}
.task-check:has(input:checked){border-color:var(--brand-600);background:var(--brand-50)}
.task-check:has(input:checked) .tc-ic{background:var(--brand-600);color:#fff}
.task-check:not(:has(input:checked)) .tc-ic{background:var(--neutral-100);color:var(--neutral-500)}
.task-check .tc-check-mark{width:18px;height:18px;border-radius:4px;border:2px solid var(--neutral-300);flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:.15s}
.task-check:has(input:checked) .tc-check-mark{border-color:var(--brand-600);background:var(--brand-600)}
.task-check:has(input:checked) .tc-check-mark svg{display:block}
.task-check:not(:has(input:checked)) .tc-check-mark svg{display:none}

/* 转发海报配置 */
.poster-config-trigger{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px dashed var(--brand-400);border-radius:8px;background:var(--brand-50);cursor:pointer;transition:.15s;width:100%}
.poster-config-trigger:hover{background:var(--brand-100);border-style:solid}
.poster-config-trigger .pt-ic{width:32px;height:32px;border-radius:6px;background:var(--brand-600);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.poster-config-trigger .pt-info{text-align:left;flex:1}
.poster-config-trigger .pt-info .pt-t{font-size:13px;font-weight:600;color:var(--brand-700)}
.poster-config-trigger .pt-info .pt-s{font-size:11px;color:var(--neutral-600);margin-top:1px}
.poster-modal-layout{display:grid;grid-template-columns:1fr 360px;gap:20px}
.poster-modal-layout .pm-left{display:flex;flex-direction:column;gap:12px}
.poster-modal-layout .pm-right{display:flex;flex-direction:column}
.poster-preview-wrap{background:var(--neutral-50);border:1px solid var(--neutral-200);border-radius:8px;padding:16px;flex:1;display:flex;align-items:center;justify-content:center}
.poster-preview{width:300px;min-height:420px;border-radius:10px;overflow:hidden;position:relative;box-shadow:0 4px 16px rgba(0,0,0,.12);transition:.3s}
.poster-preview .pp-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.poster-preview .pp-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.1) 0%,rgba(0,0,0,.55) 100%)}
.poster-preview .pp-content{position:absolute;inset:0;padding:24px;display:flex;flex-direction:column;color:#fff}
.poster-preview .pp-title{font-size:22px;font-weight:800;line-height:1.3;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.poster-preview .pp-subtitle{font-size:13px;margin-top:6px;opacity:.9;line-height:1.5}
.poster-preview .pp-spacer{flex:1}
.poster-preview .pp-bottom{display:flex;align-items:flex-end;justify-content:space-between;gap:10px}
.poster-preview .pp-qr-drag{position:absolute;width:56px;height:56px;border-radius:6px;background:#fff;padding:3px;flex-shrink:0;cursor:move;user-select:none;box-shadow:0 2px 8px rgba(0,0,0,.25);z-index:5;transition:box-shadow .15s}
.poster-preview .pp-qr-drag:hover{box-shadow:0 4px 12px rgba(0,0,0,.35)}
.poster-preview .pp-qr-drag.dragging{box-shadow:0 6px 20px rgba(0,0,0,.4);cursor:grabbing}
.poster-preview .pp-qr-drag svg{width:100%;height:100%}
.poster-preview .pp-qr-drag::after{content:'';position:absolute;inset:-4px;border:2px dashed transparent;border-radius:8px;transition:.15s}
.poster-preview .pp-qr-drag:hover::after{border-color:rgba(255,255,255,.5)}
.poster-preview .pp-cta{font-size:12px;opacity:.85;line-height:1.4}
.poster-template-row{display:flex;gap:8px}
.poster-template-opt{flex:1;padding:8px;border:1px solid var(--neutral-300);border-radius:6px;cursor:pointer;text-align:center;font-size:12px;transition:.15s}
.poster-template-opt:hover{border-color:var(--brand-300)}
.poster-template-opt.active{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);font-weight:600}
.color-swatch-row{display:flex;gap:6px;flex-wrap:wrap}
.color-swatch{width:28px;height:28px;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:.15s}
.color-swatch.active{border-color:var(--brand-600);transform:scale(1.1)}
.qr-pos-row{display:flex;gap:6px}
.qr-pos-opt{flex:1;padding:6px;border:1px solid var(--neutral-300);border-radius:6px;cursor:pointer;text-align:center;font-size:11px;transition:.15s}
.qr-pos-opt:hover{border-color:var(--brand-300)}
.qr-pos-opt.active{border-color:var(--brand-600);background:var(--brand-50);color:var(--brand-700);font-weight:600}
.qr-scale-row{display:flex;align-items:center;gap:10px}
.qr-scale-row input[type=range]{flex:1;height:6px;-webkit-appearance:none;background:var(--neutral-200);border-radius:3px;outline:none}
.qr-scale-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--brand-600);cursor:pointer;box-shadow:0 1px 4px rgba(0,0,0,.2)}
.qr-scale-row input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--brand-600);cursor:pointer;border:none}
.qr-scale-val{font-size:13px;font-weight:600;color:var(--brand-600);min-width:38px;text-align:right;font-variant-numeric:tabular-nums}
.qr-drag-tip{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--neutral-600);margin-top:6px;line-height:1.5}