*{box-sizing:border-box} :root{--bg:#f5f5f5;--panel:#fff;--text:#171717;--muted:#737373;--border:#d4d4d4;--selected:#eff6ff;--blue:#3b82f6;--header:linear-gradient(135deg,#64748b,#475569)}[data-theme=dark]{--bg:#0f0f0f;--panel:#1a1a1a;--text:#f5f5f5;--muted:#a3a3a3;--border:#333;--selected:#1e293b;--header:linear-gradient(135deg,#1e293b,#0f172a)}body{margin:0;background:var(--bg);color:var(--text);font:14px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;height:100dvh;display:flex;flex-direction:column}button,input{font:inherit}button{cursor:pointer;border:1px solid var(--border);border-radius:6px;padding:8px 12px;background:var(--panel);color:var(--text)}button:hover{background:var(--selected)}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible{outline:2px solid var(--blue);outline-offset:2px}header{min-height:76px;padding:16px 24px;background:var(--header);display:flex;align-items:center;gap:24px;color:white}.logo{text-decoration:none;font-size:27px;font-weight:800;letter-spacing:-1px}.logo span{color:#60a5fa}.logo b{color:#fb923c}.workspace-label{font-size:10px;letter-spacing:2px;color:#cbd5e1}.header-actions{margin-left:auto;display:flex;gap:8px}.header-actions button{background:#ffffff0d;color:white;border-color:#ffffff30}main{display:flex;flex:1;min-height:0}aside{width:205px;flex-shrink:0;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column}.panel-heading{padding:22px 18px;font-size:11px;font-weight:700;letter-spacing:1px;display:flex;justify-content:space-between}.panel-heading span{color:var(--muted)}#fileList{overflow:auto;padding:0 8px}#fileList button{display:block;width:100%;text-align:left;border:0;background:transparent;margin:3px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#fileList button.active{color:var(--blue);background:var(--selected);box-shadow:inset 3px 0 var(--blue)}.file-actions{padding:16px 10px;display:grid;gap:8px}.file-actions button{text-align:left;background:transparent;border-style:dashed}.sidebar-note{margin:auto 18px 24px;color:var(--muted);font-size:12px;line-height:1.8}.editor-panel{flex:1;min-width:260px;display:flex;flex-direction:column;background:var(--panel)}.toolbar{height:58px;flex-shrink:0;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px solid var(--border)}.toolbar strong{font-size:13px;overflow:hidden;text-overflow:ellipsis}.toolbar>div{display:flex;gap:6px}.toolbar button{font-size:12px;padding:7px 9px}.editor-host{display:flex;flex:1;min-height:0;overflow:hidden;padding-top:18px}#lineNumbers{margin:0;width:52px;flex-shrink:0;text-align:right;padding:0 12px;color:var(--muted);overflow:hidden;user-select:none}#codeInput,#lineNumbers{font:14px/24px ui-monospace,SFMono-Regular,Consolas,monospace;tab-size:4}#codeInput{resize:none;flex:1;min-width:0;white-space:pre;overflow:auto;border:0;outline:0;background:transparent;color:var(--text);padding:0 20px 40px 4px}.editor-footer{padding:10px 16px;display:flex;justify-content:space-between;border-top:1px solid var(--border);font-size:11px;color:var(--muted)}.run{background:#10b981!important;color:white!important;border-color:#059669!important}.output-tabs{display:flex;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border)}.output-tabs button{border:0;background:transparent;font-size:12px}.output-tabs button[aria-pressed=true]{color:var(--blue);background:var(--selected)}#clearConsole{margin-left:auto;color:var(--muted)}#consoleOutput{margin:0;padding:20px;flex:1;overflow:auto;font:13px/1.8 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}canvas{background:#111;max-width:100%;height:auto}#graphics p{color:var(--muted);font-size:12px}footer{display:flex;gap:24px;padding:10px 18px;border-top:1px solid var(--border);font-size:11px;color:var(--muted);background:var(--panel)}footer>span:first-child{margin-right:auto}#statusDot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#10b981;margin-right:8px}dialog{border:1px solid var(--border);border-radius:12px;padding:24px;background:var(--panel);color:var(--text);width:360px}dialog::backdrop{background:#0008}dialog h2{margin-top:0;font-size:20px}dialog label{display:block;margin-bottom:8px}dialog input{width:100%;padding:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:5px}dialog form>div{display:flex;justify-content:flex-end;gap:8px}#nameError{color:#ef4444;font-size:12px}[hidden]{display:none!important}@media(max-width:1000px){.workspace-label{display:none}.toolbar{padding:10px}.toolbar button{padding:6px}aside{width:165px}}@media(max-width:760px){body{height:auto;min-height:100dvh}header{flex-wrap:wrap;gap:12px;padding:14px}.header-actions{gap:5px}.header-actions button{font-size:11px;padding:7px}main{flex-wrap:wrap}aside{width:100%;border-bottom:1px solid var(--border)}.panel-heading,.sidebar-note{display:none}#fileList{display:flex}.file-actions{display:flex;padding:8px}.editor-panel{width:100%;height:55dvh;flex:auto}footer{flex-wrap:wrap;gap:8px}}
#ideWorkspace{display:flex;flex-direction:column;flex:1;min-height:0}
.login-page{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 20px;background:var(--bg)}
.login-brand{font-size:38px;margin-bottom:32px}
.login-card{width:100%;max-width:420px;padding:32px;background:var(--panel);border:1px solid var(--border);border-top:4px solid #60a5fa;border-radius:16px;box-shadow:0 10px 25px #0000000d}
.login-card h1{font-size:24px;margin:0 0 12px}.login-card>p{color:var(--muted);line-height:1.6;margin-bottom:24px}.login-card label{display:block;margin-bottom:8px;font-weight:600}.login-card input{width:100%;padding:12px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text)}.login-card #loginError{color:#ef4444;font-size:13px;margin:12px 0;min-height:20px}.login-submit{width:100%;background:#3b82f6;color:white;border-color:#3b82f6;padding:12px}.login-submit:hover{background:#2563eb}

.password-field{position:relative}.password-field input{padding-right:76px}.password-field button{position:absolute;right:6px;top:50%;transform:translateY(-50%);padding:6px 10px;font-size:12px}
.course-nav{display:flex;align-items:center;gap:8px;padding:10px 20px;background:var(--panel);border-bottom:1px solid var(--border)}.course-nav button{border:0;font-size:12px}.course-nav button[aria-pressed=true]{background:var(--selected);color:var(--blue)}#courseProgress{margin-left:auto;color:var(--muted);font-size:12px}.week-tabs{display:flex;flex-shrink:0;overflow-x:auto;background:var(--panel);border-bottom:1px solid var(--border);padding:0 12px}.week-tabs button{flex:1;min-width:95px;border:0;border-radius:0;padding:12px 10px;background:transparent;font-size:12px;text-align:left;border-bottom:3px solid transparent}.week-tabs button span{display:block;font-size:10px;color:var(--muted);margin-top:5px}.week-tabs button.active{border-bottom-color:#fb923c;background:var(--selected);color:var(--blue)}#lessonSidebar{overflow:auto}#weekTitle{font-size:18px;margin:0 16px 18px}#levelList{padding:0 8px}#levelList button{display:block;width:100%;text-align:left;border:0;background:transparent;margin-bottom:5px;font-size:12px}#levelList button.active{background:var(--selected);color:var(--blue);box-shadow:inset 3px 0 var(--blue)}.command-guide{margin:24px 14px;font-size:11px}.command-guide h3{font-size:12px;margin-bottom:16px}.command-guide code{font-size:10px;color:var(--blue)}.command-guide p{line-height:1.6;color:var(--muted);margin:6px 0 16px}#lessonBrief{padding:20px 22px;border-bottom:1px solid var(--border);max-height:35vh;overflow:auto;background:var(--panel)}.lesson-kicker{font-size:10px;letter-spacing:1px;color:var(--muted)}#lessonBrief h1{font-size:24px;margin:9px 0}#lessonBrief p{font-size:13px;line-height:1.65;margin:8px 0}#lessonBrief details{margin-top:12px}#lessonBrief summary{cursor:pointer;font-size:12px;font-weight:600;color:var(--blue)}#lessonExample{padding:12px;background:var(--bg);border-radius:6px;font:12px/1.6 ui-monospace,monospace;white-space:pre-wrap}#levelResult p{font-size:12px;line-height:1.6;color:var(--muted);margin:8px 0}#nextLevel{font-size:12px;margin-top:6px}#graphics p{display:none}.code-layer{position:relative;flex:1;min-width:0;min-height:0;overflow:hidden}.code-layer #codeInput,.code-layer #highlightedCode{position:absolute;inset:0;width:100%;height:100%;margin:0;padding:0 20px 40px 4px;font:14px/24px ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre;tab-size:4;letter-spacing:normal;border:0;overflow:auto}.code-layer #highlightedCode{pointer-events:none;scrollbar-width:none;color:var(--text)}.code-layer #highlightedCode::-webkit-scrollbar{display:none}.code-layer #codeInput{color:transparent;caret-color:var(--text);background:transparent;-webkit-text-fill-color:transparent}.code-layer #codeInput::selection{background:#60a5fa50}.syntax-keyword{color:#8545b8}.syntax-string{color:#16824c}.syntax-comment{color:#78838e}.syntax-number{color:#b86414}.syntax-builtin{color:#236caf}[data-theme=dark] .syntax-keyword{color:#c792ea}[data-theme=dark] .syntax-string{color:#a5d6a7}[data-theme=dark] .syntax-number{color:#f5b971}[data-theme=dark] .syntax-builtin{color:#82aaff}.teacher-heading{display:flex;justify-content:space-between;gap:20px;align-items:center}.teacher-heading h2{margin:0}#teacherDialog{width:min(680px,90vw);max-height:85vh}#teacherForm{margin-top:20px}#teacherForm button{margin-top:12px}#teacherCode{padding:16px;background:var(--bg);overflow:auto;font:13px/1.7 ui-monospace,monospace}#teacherExplanation{font-size:13px;line-height:1.7}#teacherError{color:#ef4444}.editor-host{min-height:140px}@media(max-width:760px){#lessonSidebar{display:flex;align-items:center;width:100%;gap:8px;padding:8px}#lessonSidebar #weekTitle,.command-guide{display:none}#levelList{display:flex}#levelList button{white-space:nowrap;margin:0}.editor-panel{height:72dvh}#lessonBrief{max-height:30vh}header .header-actions{flex-wrap:wrap}.course-nav{padding:8px}.week-tabs button{min-width:95px}#freeSidebar{width:100%}}

.map-note{color:var(--muted);font-size:11px!important}.playback-controls{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;font-size:12px;color:var(--muted)}.playback-controls select{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:5px;padding:5px 8px}.map-description{text-align:left;font-size:11px;color:var(--muted);line-height:1.6}.map-description summary{cursor:pointer}.map-description #mapDescription{display:block;font-size:11px;max-height:130px;overflow:auto}
@media(max-width:760px){}
.output-tabs{flex-shrink:0}
.playback-controls{flex-shrink:0;padding:4px;font-size:11px}
.map-description{flex-shrink:0;max-height:25%;overflow:auto}
.map-description #mapDescription{margin:4px 0;font-size:10px}
#resultError{margin:8px 0;padding:8px 10px;border-left:3px solid #ef4444;background:var(--panel);color:#b91c1c;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.6 ui-monospace,monospace}
[data-theme=dark] #resultError{color:#fca5a5}
#runDetails{margin-top:8px;font-size:11px}#runDetails summary{cursor:pointer;color:var(--muted)}
#runOutput{margin:6px 0;max-height:150px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.6 ui-monospace,monospace}
#consoleOutput{min-height:0}
#lessonSidebar{min-height:0}
@media(max-width:760px){#lessonSidebar{display:block;padding:8px}#levelList{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:0}#levelList button{overflow:hidden;text-overflow:ellipsis}}
@media(min-width:761px) and (max-height:760px){header{min-height:58px;padding:10px 20px}.course-nav{padding:6px 16px}.week-tabs button{padding:8px 10px}.toolbar{height:46px;padding:8px 12px}#lessonBrief{padding:12px 16px;max-height:29vh}.editor-host{min-height:80px}.editor-footer,footer{padding-top:6px;padding-bottom:6px}}
.map-description{width:100%;max-height:none;overflow:visible}
#runOutput{max-height:160px;overflow:auto}
#resultError{max-height:180px;overflow:auto}
@media(max-width:1100px) and (min-width:761px){aside{width:150px}.editor-panel{min-width:250px}}
@media(max-width:760px){}
.win-screen{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;background:#102b32ed;color:#fff;text-align:center;z-index:2}
.win-star{font-size:64px;color:#facc15}.win-screen h2{font-size:30px;margin:0}#graphics .win-screen p{display:block;color:#d1fae5;font-size:15px;margin:0 0 8px}.win-screen button{font-size:15px;padding:12px 20px}
@media(max-width:760px){}

/* The game and feedback are separate rows in normal page flow. Nothing docks over the map. */
body{height:auto;min-height:100dvh;overflow-y:auto}
#ideWorkspace{min-height:100dvh}
main{min-height:820px;align-items:stretch}
.output-panel{flex:0 0 48%;width:48%;min-width:290px;display:flex;flex-direction:column;background:var(--panel);border-left:1px solid var(--border);overflow:visible}
#graphics{display:flex;flex:0 0 auto;flex-direction:column;align-items:center;gap:8px;padding:12px;overflow:visible;text-align:center}
#canvasStage{position:relative;flex:none;width:100%;max-width:640px;aspect-ratio:8 / 7;background:#15252f}
#canvasStage canvas{position:absolute;inset:0;width:100%;height:100%;max-width:none;max-height:none;transform:none;object-fit:contain}
#levelResult{position:static;flex:none;height:auto;min-height:150px;max-height:none;margin:0;padding:16px;border-top:2px solid var(--border);background:var(--selected);overflow:visible}
#levelResult strong{position:static;display:block;font-size:14px;margin:0 0 8px}
#runOutput{max-height:180px;overflow:auto}
#resultError{max-height:180px;overflow:auto}
@media(max-width:1100px) and (min-width:761px){.output-panel{flex-basis:49%;width:49%}}
@media(max-width:760px){main{min-height:0}.output-panel{flex:none;width:100%;min-width:0;height:auto;min-height:0}#graphics{padding:10px}#levelResult{min-height:150px}}

#lessonGoals{padding-left:20px;margin:10px 0;font-size:13px;line-height:1.7}#weekTabs button:disabled{opacity:.6}#weekTabs button:disabled:not(.active){background:var(--bg);cursor:not-allowed}