html,body{height:100%;overflow:hidden;display:flex;flex-direction:column}#app{flex:1;min-height:0;display:grid;grid-template-columns:240px 1fr 280px;overflow:hidden}#toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:4px 8px;padding:7px 12px;border-bottom:1px solid var(--gray-mid);flex-shrink:0;background:#fff}.tb-num{width:44px;padding:4px 5px;border:1px solid var(--gray-mid);border-radius:var(--radius);font-family:var(--font);font-size:.75rem;text-align:center;outline:none}.tb-num:focus{border-color:var(--orange)}#sets-panel{background:#fff;border-right:1px solid var(--gray-mid);display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;padding:10px;gap:8px}.set-card{border:1px solid var(--gray-mid);border-radius:var(--radius-lg);overflow:hidden;background:#fff;transition:border-color .2s;flex-shrink:0}.set-card:focus-within{border-color:var(--orange)}.set-card-header{display:flex;align-items:center;gap:7px;padding:8px 10px 5px}.set-color-picker{width:24px;height:24px;border:none;border-radius:50%;padding:0;cursor:pointer;background:none;flex-shrink:0;overflow:hidden}.set-color-picker::-webkit-color-swatch-wrapper{padding:0}.set-color-picker::-webkit-color-swatch{border:2px solid rgba(0,0,0,.15);border-radius:50%}.set-label-input{flex:1;min-width:0;border:none;outline:none;font-family:var(--font);font-size:.82rem;font-weight:600;color:var(--text);background:transparent}.btn-remove-set{background:none;border:none;color:var(--gray-dark);font-size:1.1rem;line-height:1;cursor:pointer;padding:0 2px;flex-shrink:0}.btn-remove-set:hover{color:#dc3545}.set-import-bar{padding:4px 10px;background:var(--gray-light);border-top:1px solid var(--gray-mid);border-bottom:1px solid var(--gray-mid)}.btn-import-file{display:inline-flex;align-items:center;gap:4px;font-size:.72rem;font-weight:600;color:var(--orange);cursor:pointer;padding:2px 0;transition:opacity .15s}.btn-import-file:hover{opacity:.75}.file-input-hidden{display:none}.set-textarea{display:block;width:100%;min-height:80px;max-height:160px;padding:6px 10px;border:none;border-top:1px solid var(--gray-light);resize:vertical;font-family:SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.72rem;line-height:1.5;color:var(--text);outline:none;background:#fafafa}.set-textarea.dragover{background:var(--orange-bg)}.set-textarea::placeholder{color:#bbb;font-style:italic}.set-footer{display:flex;align-items:center;justify-content:space-between;padding:3px 10px;background:var(--gray-light)}.set-count{font-size:.7rem;color:var(--gray-dark)}.btn-clear-set{background:none;border:none;font-size:.7rem;color:var(--gray-dark);cursor:pointer}.btn-clear-set:hover{color:var(--orange)}#btn-add-set{display:flex;align-items:center;justify-content:center;gap:5px;padding:8px;background:none;border:2px dashed var(--gray-mid);border-radius:var(--radius-lg);color:var(--gray-dark);font-family:var(--font);font-size:.82rem;font-weight:500;cursor:pointer;transition:all .2s;flex-shrink:0}#btn-add-set:hover{border-color:var(--orange);color:var(--orange);background:var(--orange-bg)}#diagram-panel{display:flex;flex-direction:column;background:#fff;border-right:1px solid var(--gray-mid);min-width:0;overflow:hidden}#canvas-wrap{flex:1;min-height:0;position:relative;overflow:hidden}#venn-canvas{position:absolute;top:0;left:0;width:100%;height:100%;display:block}#stats-panel{flex-shrink:0;max-height:200px;overflow-y:auto;padding:12px 16px;background:var(--gray-light);border-top:1px solid var(--gray-mid)}#stats-panel.hidden{display:none}.stats-grid{display:flex;gap:24px;flex-wrap:wrap}.stats-section h4{font-size:.72rem;font-weight:700;color:var(--gray-dark);text-transform:uppercase;letter-spacing:.05em;margin-bottom:7px}.stats-table{border-collapse:collapse;font-size:.76rem;white-space:nowrap}.stats-table td,.stats-table th{padding:3px 10px 3px 0}.stats-table th{font-weight:600;color:var(--gray-dark);font-size:.7rem}.stats-table .num{text-align:right;font-variant-numeric:tabular-nums}.stats-table .total-row td{border-top:1px solid var(--gray-mid);font-weight:600;padding-top:5px}.stats-note{font-size:.68rem;color:var(--gray-dark);margin-top:6px}.sig-high{color:#b00020;font-weight:600}.sig-med{color:#c85a00;font-weight:600}.sig-low{color:#7a7a00}.sig-none{color:var(--gray-dark)}#items-panel{display:flex;flex-direction:column;background:#fff;min-height:0;overflow:hidden}#items-header{padding:10px 14px 7px;border-bottom:1px solid var(--gray-mid);flex-shrink:0}#selection-label{font-size:.85rem;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#selection-count{font-size:.76rem;color:var(--orange);font-weight:500;margin-top:2px;min-height:1em}#export-bar{display:flex;gap:5px;padding:6px 14px;border-bottom:1px solid var(--gray-mid);flex-shrink:0;flex-wrap:wrap}#export-bar.hidden{display:none}.exp-btn{padding:3px 10px;border-radius:var(--radius);border:1px solid var(--gray-mid);background:#fff;color:var(--text);font-family:var(--font);font-size:.73rem;font-weight:500;cursor:pointer;transition:all .15s}.exp-btn:hover{border-color:var(--orange);color:var(--orange)}.exp-btn.primary{background:var(--orange);border-color:var(--orange);color:#fff}.exp-btn.primary:hover{background:var(--orange-h)}.exp-btn.flashed{background:#198754;border-color:#198754;color:#fff}#search-wrap{padding:6px 14px;border-bottom:1px solid var(--gray-mid);flex-shrink:0}#search-wrap.hidden{display:none}#item-search{width:100%;padding:5px 9px;border:1px solid var(--gray-mid);border-radius:var(--radius);font-family:var(--font);font-size:.76rem;outline:none}#item-search:focus{border-color:var(--orange-lt)}#list-container{flex:1;min-height:0;overflow-y:auto}.vl-item{padding:4px 14px;font-size:.75rem;font-family:SFMono-Regular,Menlo,Monaco,Consolas,monospace;color:var(--text);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-bottom:1px solid #f0f0f0;height:26px;line-height:18px;transition:background .1s}.vl-item:hover{background:var(--orange-bg);color:var(--orange)}.empty-hint{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--gray-dark);font-size:.82rem;text-align:center;padding:24px;gap:8px}.hint-icon{font-size:2rem;opacity:.25}#tooltip{display:none;position:fixed;z-index:9999;background:#0b1131ed;color:#fff;font-size:.73rem;padding:4px 10px;border-radius:var(--radius);pointer-events:none;white-space:nowrap;box-shadow:0 2px 8px #0000004d}.col-preview{font-size:.69rem;font-family:SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:var(--gray-light);padding:8px 10px;border-radius:var(--radius);overflow-x:auto;white-space:pre;margin-bottom:12px;color:var(--text)}.col-sub{font-size:.78rem;color:var(--gray-dark);margin-bottom:10px}.help-section{display:flex;flex-direction:column;gap:10px;margin-bottom:14px;padding:0 4px}.help-step{font-size:.78rem;line-height:1.55;color:var(--text)}.help-step kbd{display:inline-block;padding:1px 5px;border:1px solid var(--gray-mid);border-radius:4px;font-family:SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.7rem;background:var(--gray-light);color:var(--text)}.help-tip{background:var(--orange-bg);border:1px solid rgba(200,90,39,.25);border-radius:var(--radius);padding:8px 12px;font-size:.76rem;color:var(--text);line-height:1.5;margin:0 4px}#venn-help-modal .modal-box{max-width:520px}@media (max-width:900px){#app{grid-template-columns:200px 1fr}#items-panel{display:none}}@media (max-width:600px){#app{grid-template-columns:1fr;grid-template-rows:auto 1fr}#sets-panel{display:none}}