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.physics-controls summary{font:8px monospace;letter-spacing:1px;cursor:pointer;color:var(--gold);margin-bottom:16px}.physics-controls:not([open]) summary{margin-bottom:0}@media(max-width:720px){.physics-controls{display:block;top:82px;right:20px;width:156px;padding:12px}.physics-controls summary{font-size:8px}}
/* Expanded lab: the same table, with an adjacent notebook rather than overlays. */
body{grid-template-columns:280px minmax(0,1fr) 300px}.panel{padding:28px 22px}.lab-panel{height:100dvh;overflow-y:auto;padding:30px 22px;background:#14201d;border-left:1px solid #ffffff12;scrollbar-width:thin;scrollbar-color:#486052 #14201d}.interaction-modes{display:flex;gap:4px}.interaction-modes button{flex:1;padding:10px 4px;font-size:10px}.interaction-modes button[aria-pressed=true]{background:#c5aa7020;color:var(--gold);border-color:#c5aa7080}.check-label{display:flex;gap:8px;align-items:center;font-size:10px;color:var(--muted);margin-bottom:22px}.check-label input{accent-color:var(--gold)}.formula{font:10px/1.8 monospace;color:var(--gold);padding:10px 12px;background:#ffffff05;border-left:2px solid #c5aa7070}.playback{border-top:1px solid #ffffff17;padding:22px 0 12px}.playback .button-row{margin-bottom:12px}.playback .muted{margin-bottom:18px}.inspector-title{display:flex;align-items:center;justify-content:space-between;gap:8px}.inspector-title h2{font:26px Georgia;margin:6px 0;color:#e0d6b9}.inspector-title>span{font:9px monospace;color:#80b7a0}.ball-picker{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin:18px 0}.ball-picker button{width:26px;height:26px;padding:0;border-radius:50%;font:10px monospace;border-color:#ffffff30;background:var(--ball-color);color:#fff;text-shadow:0 1px 3px #000}.ball-picker button[aria-pressed=true]{outline:2px solid var(--gold);outline-offset:2px}.ball-picker button.sunk{opacity:.35}.properties{margin:20px 0}.properties dt{font:9px/1.6 Arial;color:var(--muted);margin-top:13px}.properties dd{margin:3px 0;font:11px/1.6 monospace;color:#d2dbc9;overflow-wrap:anywhere}.live-equation{padding:13px;background:#ffffff04;border:1px solid #ffffff12;border-radius:6px;font:10px/1.9 monospace;color:#e0d6b9;white-space:pre-line;overflow-wrap:anywhere}.live-equation>span{display:block;font:8px monospace;color:var(--muted);margin-bottom:8px}.live-equation code{font:10px/1.9 monospace}.math-detail{border-top:1px solid #ffffff17;margin-top:22px;padding-top:16px}.math-detail summary{font:11px Georgia;color:#d8cbac;cursor:pointer;margin-bottom:14px}.math-detail p{font:10px/1.8 Arial;color:var(--muted)}.math-detail>code{font:10px/1.7 monospace;overflow-wrap:anywhere}.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:12px 8px;border-inline:1px solid var(--gold);font:10px monospace;text-align:right;margin-top:14px}.physics-controls{position:static;width:auto;padding:20px 0;margin-top:24px;border:0;border-top:1px solid #ffffff17;border-radius:0;background:none}.physics-controls label{font-size:10px}.physics-controls p{font:10px/1.8 Arial;margin:0 0 16px}.physics-controls summary{font:9px monospace}.physics-controls input{margin:14px 0 24px}select{width:100%;min-width:0;background:#1d3028;color:#e0d6b9;border:1px solid #ffffff25;border-radius:4px;padding:9px 7px;font:10px monospace;margin:10px 0 18px}.selection-badge{position:absolute;top:109px;left:32px;display:flex;flex-direction:column;gap:8px;pointer-events:none}.selection-badge button{pointer-events:auto;font:10px monospace;background:#14201dbb;padding:10px 12px}.selection-badge>span{font:8px monospace;color:#80b7a0;letter-spacing:1px}.stage-header h2{font-size:21px}.instructions{max-width:220px}.stage-bottom{gap:12px}.vector-toggle{font-size:8px}
@media(min-width:1101px){.lab-panel{position:sticky;top:0}.stage,.panel{position:sticky;top:0}.stage-header{inset:28px 22px auto}.selection-badge{left:22px}.stage-bottom{left:22px;right:22px}.instructions{max-width:180px}.vector-toggle{display:none}}
@media(max-width:1100px) and (min-width:721px){body{grid-template-columns:280px minmax(0,1fr)}.lab-panel{grid-column:1/-1;height:auto;display:grid;grid-template-columns:1fr 1fr;gap:24px 40px;border-top:1px solid #ffffff17;padding:30px}.lab-panel>.section-heading{grid-column:1/-1;margin-bottom:0}.lab-panel>.physics-controls{grid-column:2;grid-row:2/4;margin:0}.lab-panel>.math-detail{grid-column:1}.selection-badge{left:22px}.stage-header h2{font-size:19px}}
@media(max-width:720px){.stage{position:relative;order:0;height:67svh;min-height:440px}.lab-panel{order:2;height:auto;padding:26px 24px;border-top:1px solid #ffffff17;border-left:0}.panel{order:1;padding:24px}.panel header{display:block}.panel header p{display:none}.physics-controls{display:block;position:static;width:auto;padding:20px 0}.selection-badge{top:96px;left:20px}.selection-badge button{font-size:9px}.stage-header h2{font-size:16px;max-width:200px}.stage-header{gap:8px}.ball-picker{grid-template-columns:repeat(8,1fr);max-width:340px}.ball-picker button{height:30px;width:30px}.properties{display:grid;grid-template-columns:1fr;gap:0}.properties dd{font-size:12px}.interaction-modes button{font-size:12px}.check-label{font-size:12px}.lab-panel .muted,.math-detail p,.physics-controls p{font-size:12px}.physics-controls label{font-size:12px}}
.stage-transport{position:absolute;right:22px;top:109px;display:flex;gap:5px;align-items:center}.stage-transport button{font:10px monospace;padding:9px;background:#14201dbb}.stage-transport select{width:65px;padding:9px 4px;margin:0;font:10px monospace;background:#14201de8}.formula{white-space:pre-line}
@media(max-width:720px){.stage-transport{top:auto;bottom:76px;right:20px}.stage-transport button{font-size:10px}.stage-transport select{font-size:11px}.selection-badge{max-width:calc(100% - 40px)}.selection-badge button{white-space:normal;text-align:left}}
.lab-vectors{display:flex!important;margin-bottom:20px;font-size:10px}.lab-panel>.lab-vectors{grid-column:1/-1}.lab-panel{scroll-behavior:smooth}@media(max-width:1100px) and (min-width:721px){.lab-panel>.physics-controls{grid-row:3/5}.lab-panel>.inspector{grid-column:1}}
.keyboard-card{border:1px solid #c5aa7030;border-radius:6px;background:#c5aa7008;padding:12px;margin:14px 0 22px}.keyboard-card>p{font:10px/2.1 Arial;color:#cbd5c6;margin:10px 0 0}.keyboard-card p span{color:var(--muted);font-size:9px}kbd{font:9px monospace;border:1px solid #ffffff25;border-bottom-width:2px;background:#ffffff06;border-radius:3px;padding:2px 4px;color:#e0d6b9}.keyboard-card details{margin-top:10px}.keyboard-card summary{font:10px Arial;color:var(--gold);cursor:pointer}.keyboard-card dl{display:grid;grid-template-columns:55px 1fr;gap:10px 8px;font:9px/1.6 Arial;margin-top:16px}.keyboard-card dt{font-family:monospace;color:var(--gold)}.keyboard-card dd{margin:0;color:var(--muted)}.keyboard-card details p{font:10px/1.7 Arial;color:var(--muted)}.shot-dock{position:absolute;bottom:112px;left:22px;right:22px;max-width:440px;margin-inline:auto;padding:13px 15px;background:#101a19e8;border:1px solid #c5aa7030;border-radius:8px;box-shadow:0 8px 25px #0002}.dock-heading{display:flex;align-items:center;gap:12px}.dock-heading>span{font:9px monospace;letter-spacing:1px;color:var(--gold);flex:1}.dock-heading output{font:9px monospace;color:var(--muted);white-space:nowrap}.dock-heading button{font:10px monospace;padding:7px 9px}.pull-meter{height:4px;background:#ffffff10;border-radius:3px;overflow:hidden;margin-top:12px}.pull-meter i{display:block;height:100%;background:var(--gold);width:55%}.shot-dock p{font:9px/1.6 monospace;color:#b7c8b9;margin:10px 0 0}#scene canvas:focus-visible{outline:1px solid #c5aa7070;outline-offset:-5px}@media(max-width:720px){.shot-dock{bottom:78px;left:20px;right:20px;padding:10px 12px}.dock-heading{gap:8px}.dock-heading>span{font-size:8px}.dock-heading output{font-size:8px}.shot-dock p{font-size:8px}.stage-transport{top:157px;bottom:auto;right:20px}.keyboard-card>p{font-size:12px}.keyboard-card summary{font-size:12px}.keyboard-card dl{font-size:11px;grid-template-columns:60px 1fr}}