:root{color-scheme:light;--ink:#162d36;--muted:#5d7077;--line:#dce4e7;--accent:#087c67;--dark:#102d37;--paper:#f3f6f7}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;color:var(--ink);background:var(--paper)}button,input,textarea,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer;border:1px solid #ccd8dc;border-radius:8px;padding:11px 15px;color:var(--ink);background:white;font-size:14px;font-weight:600}button:hover:not(:disabled){background:#eaf2f2}button:disabled{opacity:.43;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #23b99a;outline-offset:3px}a{color:var(--accent);text-decoration:none}input,select{border:1px solid #bdcdd2;border-radius:7px;padding:11px 12px;background:white;color:var(--ink);min-width:0}input:focus,textarea:focus,select:focus{outline:2px solid #138875;outline-offset:-2px}label{font-size:14px;font-weight:600}label input{display:block;width:100%;margin-top:7px}.primary{background:var(--accent);border-color:var(--accent);color:white}.primary:hover:not(:disabled){background:#056b59}.primary span{margin-left:18px}.muted{color:var(--muted)}.small{font-size:14px;line-height:1.6}.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;letter-spacing:-.6px;white-space:nowrap}.brand-icon{display:grid;place-items:center;background:#87eed0;color:#123a3b;width:35px;height:35px;border-radius:9px;font-family:monospace;font-size:23px}.eyebrow{font-size:12px;letter-spacing:1.8px;font-weight:700;color:var(--muted);margin-bottom:9px}.app-shell{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:100vh}.sidebar{padding:28px 20px;display:flex;flex-direction:column;background:var(--dark);color:#e1f2f3}.sidebar .brand{color:white}.sidebar .brand .muted{color:#86aaaF;font-size:15px}.sidebar-heading{display:flex;justify-content:space-between;margin:48px 0 15px;font-size:12px;color:#a6c1c9;letter-spacing:1.3px}.new-project{border:1px solid #477078;background:transparent;color:#ecffff;text-align:left}.new-project:hover:not(:disabled){background:#204550}.project-form{margin:16px 0}.project-form button{margin-top:8px;width:100%}#projects{display:grid;gap:7px;margin-top:19px}#projects button{color:#c9dce2;background:transparent;border-color:transparent;text-align:left;overflow-wrap:anywhere;font-weight:500}#projects button.active{background:#234b54;color:white;border-left:3px solid #87eed0}#projects button:hover{background:#204550}.project-meta{display:block;font-size:12px;margin-top:5px;color:#a6c1c9}.sidebar-bottom{margin-top:auto;padding-top:60px;font-size:13px;color:#bdd5db;line-height:1.8}.sidebar-bottom p{color:#92b1ba;font-size:13px}.sidebar-bottom .quiet{color:#bdd5db;padding-left:0}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#87eed0;margin-right:6px}.main{min-width:0;padding:30px 34px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:23px;border-bottom:1px solid var(--line)}h1{font-size:28px;font-weight:650;letter-spacing:-1px;margin:0;overflow-wrap:anywhere}h2{font-size:15px;margin:0;font-weight:650}.badge{font-size:12px;white-space:nowrap;border:1px solid #b8d3d0;background:#e5f3ef;color:#276052;border-radius:20px;padding:6px 10px}.notice{font-size:14px;line-height:1.6;padding:17px 0;min-height:57px}.notice.error,.error{color:#a13220}.workspace-grid{display:grid;grid-template-columns:minmax(0,1fr) 235px;gap:26px}.work-area{min-width:0}.editor-toolbar{display:flex;gap:10px;justify-content:space-between;align-items:center;margin-bottom:14px}.language{display:flex;align-items:center;gap:10px;color:var(--muted)}select{padding:7px 10px;font-size:14px}.editor-pair{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:white}.editor-panel{min-width:0}.editor-panel+.editor-panel{border-left:1px solid var(--line)}.panel-header{height:54px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:8px;border-bottom:1px solid var(--line)}.upload-label{color:var(--accent);cursor:pointer;font-size:13px;font-weight:500}.quiet{border:0;padding:7px 0;background:transparent;color:var(--accent);font-size:13px}.quiet:hover:not(:disabled){background:transparent;text-decoration:underline}textarea{display:block;resize:vertical;width:100%;min-height:365px;padding:20px 16px;border:0;background:white;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;line-height:1.8;tab-size:4;color:#243d47;white-space:pre;overflow:auto;border-radius:0}textarea::placeholder{color:#7d9097;white-space:pre-wrap}.result-panel textarea{background:#f9fcfb}.editor-footer{display:flex;justify-content:space-between;gap:7px;padding:12px 16px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}.actions{display:flex;gap:9px;flex-wrap:wrap;padding:16px 0}.actions button{font-size:13px}.restore-box{background:white;border:1px solid var(--line);border-radius:8px;padding:16px;margin-top:7px;font-size:14px;line-height:1.7}.restore-box summary{font-weight:600;cursor:pointer}.restore-box p{color:var(--muted)}.explanation{display:flex;gap:12px;margin-top:23px;font-size:13px;line-height:1.7}.explanation p{margin:5px 0;color:var(--muted)}.info-icon{flex-shrink:0;width:20px;height:20px;text-align:center;background:#dce9eb;border-radius:50%;font-weight:700}.history-panel{padding-left:23px;border-left:1px solid var(--line)}.history-heading{display:flex;justify-content:space-between;align-items:center;padding-top:9px}.count{font-size:12px;background:#dee9ec;padding:3px 7px;border-radius:5px}#history{list-style:none;padding:0;margin-top:27px}#history li{position:relative;margin:0 0 12px}#history button{text-align:left;width:100%;border:1px solid transparent;background:transparent;padding:13px 12px;font-size:14px}#history button.active{background:white;border-color:#b5cfcb;box-shadow:0 3px 12px #17393208}#history button:hover{background:#e4eeef}.history-time{display:block;margin-top:6px;font-size:12px;color:var(--muted);font-weight:400}.history-parent{display:block;font-size:12px;color:#316e60;margin-top:5px;font-weight:400}.empty-history{font-size:14px;color:var(--muted);line-height:1.8;border:1px dashed #c7d8dc;border-radius:7px;padding:17px}.warnings{font-size:13px;color:#79521a;line-height:1.7}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}.login-page{min-height:100vh;background:radial-gradient(ellipse at 85% 20%,#e4f4ee 0,transparent 45%),#f3f6f7}.login-shell{max-width:530px;padding:48px 24px;margin:0 auto}.login-shell .brand{margin-bottom:45px}.login-shell h1{font-size:42px;line-height:1.15;margin:14px 0}.lead{color:var(--muted);line-height:1.7;font-size:16px}.login-card{background:white;border:1px solid var(--line);border-radius:14px;padding:28px;margin-top:28px;box-shadow:0 15px 60px #153d3810;display:grid;gap:18px}.login-card h2{font-size:20px}.login-card button{margin-top:4px}.login-card p{margin:0}.footnote{font-size:12px;color:var(--muted);text-align:center;margin:24px 0}.login-card .error{font-size:14px;line-height:1.5}@media(min-width:1600px){.main{padding:36px 48px}.workspace-grid{grid-template-columns:minmax(0,1fr) 275px}textarea{min-height:450px}}@media(max-width:1200px){.app-shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:24px 14px}.main{padding:25px 22px}.workspace-grid{grid-template-columns:minmax(0,1fr)}.history-panel{border-left:0;border-top:1px solid var(--line);padding:18px 0}#history{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}#history li{min-width:180px}.sidebar .brand{font-size:17px}.sidebar .brand .muted{display:none}}@media(max-width:760px){.app-shell{display:block}.sidebar{padding:18px}.sidebar-heading{margin:22px 0 10px}.sidebar-bottom{padding-top:20px}.sidebar-bottom p{display:none}#projects{display:flex;overflow-x:auto}#projects button{min-width:150px}.main{padding:22px 16px}.topbar{align-items:flex-start}h1{font-size:24px}.editor-pair{grid-template-columns:1fr}.editor-panel+.editor-panel{border-left:0;border-top:1px solid var(--line)}textarea{min-height:250px}.actions button{flex-grow:1}.login-shell h1{font-size:34px}.editor-toolbar{align-items:flex-start;flex-wrap:wrap}}