/* 代码沙箱：工作台右侧的编辑器 + 测试面板（浅色，参考力扣布局） */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.sbx{display:flex;flex-direction:column;flex:1;min-height:0;background:#fff;font-size:14px;line-height:1.55}
.sbx button{font:inherit;cursor:pointer}
.sbx-bar{flex:none;display:flex;align-items:center;gap:8px;min-height:42px;padding:5px 10px;border-bottom:1px solid var(--line);background:#fafcfd}
.sbx-title{font-weight:700;color:var(--ink);font-size:13.5px;white-space:nowrap}
.sbx-title span{color:var(--green);margin-right:3px}
.sbx-lang select{height:30px;padding:0 26px 0 9px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font:inherit;font-size:13px}
.sbx-status{flex:1;min-width:0;color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sbx-bar>button{height:30px;padding:0 13px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font-size:13px;font-weight:600;white-space:nowrap}
.sbx-bar>button:hover:not(:disabled){border-color:#b8c7d6;background:#f5f8fb}
.sbx-bar>button.primary{background:var(--green);border-color:var(--green);color:#fff}
.sbx-bar>button.primary:hover:not(:disabled){background:#077a55;border-color:#077a55}
.sbx button:disabled{opacity:.55;cursor:not-allowed}
.sbx-icon{width:30px;padding:0!important;display:inline-grid;place-items:center;font-size:15px!important}
.sbx-editor{flex:1;min-height:120px;position:relative;overflow:hidden;background:#fff}
.sbx-editor .cm-editor{height:100%}
.sbx-editor textarea#sbx-code{display:block;width:100%;height:100%;resize:none;border:0;outline:0;padding:10px 14px;font:13.5px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;color:var(--ink);background:#fff;tab-size:4}
.sbx-dock{flex:none;display:flex;flex-direction:column;height:min(42%,360px);min-height:150px;border-top:1px solid var(--line);background:#fff}
.sbx-dock.folded{height:auto;min-height:0}
.sbx-dock.folded .sbx-pane{display:none}
.sbx-tabs{flex:none;display:flex;align-items:center;gap:2px;height:38px;padding:0 6px 0 8px;border-bottom:1px solid #edf1f5;background:#fafcfd}
.sbx-tabs [role=tab]{height:38px;padding:0 11px;border:0;border-bottom:2px solid transparent;background:none;color:var(--muted);font-size:13px;font-weight:600}
.sbx-tabs [role=tab][aria-selected=true]{color:var(--ink);border-bottom-color:var(--green)}
.sbx-tabs [role=tab]:hover{color:var(--ink)}
.sbx-keys{flex:1;text-align:right;color:#94a3b8;font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:6px}
.sbx-tabs .sbx-icon{height:28px;border:0;border-radius:6px;background:none;color:var(--muted)}
.sbx-tabs .sbx-icon:hover{background:#eef3f7;color:var(--ink)}
.sbx-pane{flex:1;min-height:0;overflow:auto;padding:12px 14px 16px}
.sbx-pane[hidden]{display:none}
.sbx-cases{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:10px}
.sbx-chip{display:inline-flex;align-items:center;border-radius:7px;background:#f1f5f8;color:var(--muted)}
.sbx-chip button{border:0;background:none;color:inherit;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:7px}
.sbx-chip button.x{padding:4px 7px 4px 0;font-size:12px;opacity:0;color:#94a3b8}
.sbx-chip:hover button.x,.sbx-chip.on button.x,.sbx-chip button.x:focus-visible{opacity:1}
.sbx-chip button.x:hover{color:var(--red)}
.sbx-chip.on{background:#e3ecf4;color:var(--ink)}
.sbx-add{display:inline-grid;place-items:center;padding:0;line-height:1;font-size:16px;width:28px;height:28px;border:1px dashed #c4d1dd;border-radius:7px;background:none;color:var(--muted);font-size:14px}
.sbx-add:hover{border-color:var(--green);color:var(--green)}
.sbx-link{margin-left:auto;border:0;background:none;color:var(--blue);font-size:12.5px;padding:3px 4px}
.sbx-link:hover{text-decoration:underline}
.sbx-field{display:block;margin:0 0 10px}
.sbx-field>span{display:block;margin-bottom:4px;color:var(--muted);font-size:12.5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.sbx-field textarea,.sbx-raw textarea{display:block;width:100%;min-height:36px;padding:7px 10px;border:1px solid transparent;border-radius:7px;background:#f5f7fa;color:var(--ink);font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;resize:vertical;field-sizing:content;max-height:200px}
.sbx-raw textarea{min-height:110px}
.sbx-field textarea:focus,.sbx-raw textarea:focus{outline:0;border-color:#9fb6cc;background:#fff}
.sbx-raw[hidden]{display:none}
.sbx-hint{margin:0 0 8px;color:var(--muted);font-size:12.5px}
.sbx-wait::before{content:"";display:inline-block;width:11px;height:11px;margin-right:7px;vertical-align:-1px;border:2px solid #c9d6e2;border-top-color:var(--green);border-radius:50%;animation:sbxspin .8s linear infinite}
@keyframes sbxspin{to{transform:rotate(360deg)}}
.sbx-verdict{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:0 0 12px}
.sbx-verdict b{font-size:19px;font-weight:700}
.sbx-verdict span{color:var(--muted);font-size:12.5px}
.sbx-verdict.ok b{color:var(--green)}
.sbx-verdict.bad b{color:var(--red)}
.sbx-verdict.warn b{color:var(--amber)}
.sbx-casetabs{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 10px}
.sbx-casetabs button{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border:0;border-radius:7px;background:#f1f5f8;color:var(--muted);font-size:12.5px;font-weight:600}
.sbx-casetabs button[aria-pressed=true]{background:#e3ecf4;color:var(--ink)}
.sbx-casetabs i{width:6px;height:6px;border-radius:50%;background:var(--green)}
.sbx-casetabs button.bad i{background:var(--red)}
.sbx-case[hidden]{display:none}
.sbx-kv{margin:0 0 9px}
.sbx-kv>span{display:block;margin-bottom:3px;color:var(--muted);font-size:12.5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.sbx-kv pre{margin:0;padding:7px 10px;border-radius:7px;background:#f5f7fa;color:var(--ink);font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-all;max-height:180px;overflow:auto}
.sbx-kv.bad pre{background:#fdf1f1;color:#9b2c2c}
.sbx-kv.warn pre{background:#fdf6ea;color:#86500a}
.sbx-err{margin:0;padding:10px 12px;border-radius:7px;background:#fdf1f1;color:#9b2c2c;font:12.5px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-word;max-height:260px;overflow:auto}
.sbx-actions-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 0}
.sbx-actions-row button,.sbx-offline button{padding:5px 12px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);font-size:13px;font-weight:600}
.sbx-actions-row button:hover,.sbx-offline button:hover{background:#f5f8fb}
#sbx-ask-debug{border-color:#c6dcf3;color:var(--blue);background:#f3f8fd}
.sbx-offline{padding:12px 14px;border:1px solid #f0dfbf;border-radius:8px;background:#fffaf0;color:var(--ink);font-size:13px}
.sbx-offline b{display:block;margin-bottom:4px}
.sbx-offline p{margin:0 0 8px;color:var(--muted)}
.sbx-offline pre{margin:0 0 8px;padding:6px 10px;border-radius:6px;background:#fff;font-size:12.5px}
.sbx-offline button.primary{background:var(--green);border-color:var(--green);color:#fff}
.sbx :focus-visible{outline:2px solid #3b82f6;outline-offset:1px}
@media(max-width:1150px){.sbx-keys{display:none}.sbx-tabs{justify-content:flex-start}#sbx-fold{margin-left:auto}}
@media(max-width:480px){.sbx-title{display:none}.sbx-bar{gap:6px;padding:5px 8px}.sbx-bar>button{padding:0 10px}}