:root{color-scheme:dark;--bg:#081522;--panel:#102234;--stroke:#294257;--muted:#a6bdcd;--text:#eef8ff;--cyan:#68d5ef;--green:#89e4bf;--gold:#edc17e;--red:#ff9e9e;--font:system-ui,'Segoe UI',Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px}button,a,select,input{font:inherit}button,a,select{ -webkit-tap-highlight-color:transparent}button{border:1px solid var(--stroke);background:#132c40;color:var(--text);border-radius:9px;padding:9px 12px;cursor:pointer;line-height:1.35;transition:background .15s,border-color .15s}button:hover{background:#214158;border-color:#6ca7be}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}button:disabled{opacity:.42;cursor:not-allowed}button.primary{background:#176653;border-color:#308e79;color:#f4fff9;font-weight:700}button.primary:hover{background:#247d67}.vr{background:#0c536d;border-color:#4191a9}.danger{background:#512939;border-color:#8e5866}a{color:var(--cyan)}[hidden]{display:none!important}#lab{height:100dvh;min-height:480px;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:12px;min-height:76px;padding:10px 20px;border-bottom:1px solid var(--stroke);flex-shrink:0;background:#0c2032}.back{color:#adc5d5;text-decoration:none;font-size:12px;white-space:nowrap}.brand-logo{width:43px;height:43px;object-fit:contain}.brand h1{font-size:22px;letter-spacing:-.6px;margin:0;white-space:nowrap}.brand h1 span{font-weight:400;color:#b6d4e4}.brand small{font-size:8px;letter-spacing:2px;color:#7ea4bb}.top-actions{margin-left:auto;display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.top-actions button{font-size:12px}.workspace{display:grid;grid-template-columns:98px minmax(200px,1fr) 354px;flex:1;min-height:0}.activity-nav{padding:16px 8px;border-right:1px solid #233d51;display:flex;flex-direction:column;gap:9px;overflow:auto;background:#0b1c2c}.activity-nav button{display:flex;flex-direction:column;gap:7px;align-items:center;text-align:center;font-size:10px;min-height:68px;border-color:transparent;background:transparent;color:#9fb9ca;padding:10px 4px}.activity-nav button .nav-num{font-family:monospace;font-size:18px;color:#6f98b0}.activity-nav button.active{background:#173e49;color:#d7fff0;border-color:#388376}.activity-nav button.active .nav-num{color:#8fefce}.activity-nav button:hover{background:#183347}.stage{position:relative;min-width:0;overflow:hidden;background:radial-gradient(ellipse at 44% 38%,#17364c 0,#0c2338 43%,#06121f 100%)}#scene{width:100%;height:100%;display:block;touch-action:none}.stage-heading{position:absolute;left:27px;right:16px;top:25px;pointer-events:none;z-index:2;max-width:560px}.eyebrow{font:700 9px/1.4 var(--font);letter-spacing:2.4px;color:#78bfd1}.stage-heading h2{font-size:clamp(19px,2.1vw,30px);line-height:1.2;letter-spacing:-.8px;font-weight:600;margin:7px 0 6px}.stage-heading p{color:#93b3c7;font-size:12px;margin:0;line-height:1.5}.scene-legend{position:absolute;left:26px;bottom:74px;display:flex;gap:12px;flex-wrap:wrap;max-width:calc(100% - 50px);pointer-events:none;color:#aec8da;font-size:10px}.scene-legend span{display:inline-flex;align-items:center;gap:5px}.scene-legend i{width:8px;height:8px;border-radius:50%;display:inline-block}.stage-tools{position:absolute;left:50%;transform:translateX(-50%);bottom:33px;display:flex;gap:5px;align-items:center;white-space:nowrap;z-index:3}.stage-tools button{background:#0c2437e8;font-size:11px;padding:7px 9px}.stage-tools #closeInspect{color:#9decd4;border-color:#4a9788}.stage-hint{position:absolute;bottom:10px;left:15px;right:15px;text-align:center;color:#749aae;font-size:9px;pointer-events:none}.sidebar{background:linear-gradient(155deg,#142a3e,#0f2031);border-left:1px solid var(--stroke);padding:23px 21px 18px;overflow-y:auto;overscroll-behavior:contain;min-height:0}.lesson-panel .eyebrow{color:#82d4d3;letter-spacing:1.7px;font-size:9px}.lesson-panel h2{font-size:23px;line-height:1.2;letter-spacing:-.55px;margin:10px 0 12px;font-weight:600}.lesson-panel h3{font-size:14px;color:#cfedf9;margin:17px 0 8px}.lesson-panel p,.voice-panel p{font-size:13px;line-height:1.7;color:#b6cfde;margin:10px 0}.button-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.button-row button{flex:1;min-width:72px}.wide{width:100%;margin-top:10px}.step-list{display:flex;gap:7px;margin:14px 0}.step-list span{flex:1;height:4px;background:#2b4657;border-radius:3px}.step-list span.done{background:#77d7b6}.status-pill{display:inline-block;padding:5px 8px;border:1px solid #3a596d;color:#b7dcec;font-size:10px;border-radius:6px;margin:3px 4px 3px 0}.info-card{border:1px solid #365165;background:#102738;border-radius:11px;padding:12px;margin:13px 0}.info-card p{margin:0;font-size:12px}.pair-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0}.pair-choices button{font-size:22px;font-weight:800;color:#102233;background:var(--base);border:2px solid transparent;min-height:53px}.pair-choices button.selected{border-color:white;box-shadow:0 0 0 3px #7aabbd50}.slot-choices{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:12px 0}.slot-choices button{padding:6px 2px;min-height:40px;font-family:monospace}.slot-choices button.filled{color:#9be3c4;background:#124138}.slot-choices button.current{border-color:#edc17e;background:#4f4130}.feedback{border:1px solid #3b7366;border-radius:9px;padding:11px;margin:15px 0;line-height:1.6;font-size:12px;color:#bdeddb;background:#0e352e}.feedback.warning{color:#ffe0ad;background:#392d1f;border-color:#716047}.feedback.error{color:#ffd5d5;background:#45232e;border-color:#92505d}.guide-panel{padding:14px;background:#0f3b3c;border:1px solid #3e7775;border-radius:12px;margin-bottom:20px}.guide-panel .eyebrow{color:#9fe8cd}.guide-panel h3{font-size:15px;margin:8px 0}.guide-panel p{color:#b9d6d4;font-size:12px;line-height:1.6;margin:7px 0}.guide-panel progress{display:block;width:100%;height:5px;accent-color:#a0e9c9;margin:11px 0}.guide-panel button{font-size:11px;padding:7px}.voice-panel{border-top:1px solid #315066;margin-top:22px;padding-top:15px}.voice-head{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:8px;letter-spacing:1.3px;color:#79bfcc;font-weight:750}.voice-head button{padding:4px 7px;font-size:10px}.voice-panel p{font-size:12px;margin:11px 0}.voice-panel>button{font-size:11px;min-height:34px}.side-note{margin-top:19px;font-size:10px;line-height:1.65;color:#7497aa}.fine{font-size:11px;color:#95b0c2;line-height:1.65}details{margin:12px 0;font-size:12px;color:#c3dcea}details summary{cursor:pointer;color:#84d0e5}details p{font-size:12px!important}.resource-list{padding-left:18px;line-height:1.7;font-size:13px;color:#bfd2dd}.resource-list li{margin:8px 0}footer{display:flex;align-items:center;justify-content:space-between;gap:8px;background:#0b1b2a;color:#7295aa;min-height:32px;padding:5px 20px;font-size:9px;border-top:1px solid #213749}footer b{color:#aecbdc;font-weight:500}footer button{font-size:9px;border:0;background:transparent;padding:3px;color:#9ec6d8}.metric-row{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid #294557;padding:10px 0;font-size:12px;color:#aac8d7}.metric-row b{text-align:right;color:#dcf2fc}.big-stat{font-size:29px;color:#9ee6cd;letter-spacing:-1px}.assembly-choices{display:grid;gap:8px;margin:12px 0}.assembly-choices button{text-align:left;display:flex;align-items:center;gap:10px}.assembly-choices .piece-key{font-family:monospace;font-size:20px;width:28px;color:var(--cyan)}.assembly-choices button.selected{border-color:#67cfb3;background:#214b49}.assembly-choices button.done{opacity:.6}.answer-list{display:grid;gap:8px;margin-top:14px}.answer-list button{text-align:left}.answer-list button.correct{border-color:#60c79e;background:#174437}.answer-list button.incorrect{border-color:#b56c78;background:#432d37}dialog{background:#122739;border:1px solid #446176;color:var(--text);border-radius:18px;padding:24px;width:min(580px,calc(100vw - 26px));max-height:90dvh;box-shadow:0 24px 100px #0009}dialog::backdrop{background:#010a13bd;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;gap:12px}.dialog-head h2{font-size:21px;margin:0}.icon{padding:6px 10px;background:transparent}dialog label{display:block;margin:15px 0;font-size:13px;line-height:1.5}dialog select{width:100%;margin-top:6px;padding:9px;background:#0d2132;color:#ddf2ff;border:1px solid #3b5a6e;border-radius:7px}dialog input[type=range]{width:100%;margin-top:8px;accent-color:#87dfbf}dialog output{float:right;color:#9ee6cd}dialog .check{display:flex;gap:10px;align-items:center}dialog .check input{accent-color:#63ca9f}dialog code{background:#091b29;padding:2px 4px}table{width:100%;border-collapse:collapse;margin:15px 0;font-size:12px}th,td{text-align:left;padding:10px 5px;border-bottom:1px solid #2c4759}th{color:#8dd8d3}td{color:#bad3e1}.stage-error{position:absolute;inset:25% 10%;padding:22px;border:1px solid #a45b59;border-radius:16px;background:#30242e;color:#ffd8d1}.stage-error p{line-height:1.7}.stage.error #scene{opacity:0}body.xr .topbar,body.xr .sidebar,body.xr .activity-nav,body.xr footer,body.xr .stage-heading,body.xr .scene-legend,body.xr .stage-tools,body.xr .stage-hint{display:none}body.xr .workspace{display:block}body.xr #stage{position:fixed;inset:0}body.xr #lab{min-height:0}
@media(min-width:1500px){.workspace{grid-template-columns:106px minmax(200px,1fr) 398px}.sidebar{padding:28px}.lesson-panel p{font-size:14px}.stage-heading{top:32px;left:35px}}
@media(max-width:1120px){.workspace{grid-template-columns:76px minmax(200px,1fr) 300px}.sidebar{padding:18px 15px}.topbar{gap:8px;padding:10px 12px}.top-actions{gap:4px}.top-actions button{font-size:11px;padding:8px}.brand h1{font-size:19px}.brand small{font-size:7px}.brand-logo{width:34px;height:34px}.back{font-size:10px}.stage-heading{left:18px;top:20px}.stage-heading h2{font-size:22px}.activity-nav{padding:10px 4px}.activity-nav button{font-size:9px}.lesson-panel h2{font-size:21px}}
@media(max-width:800px){#lab{height:auto;min-height:100dvh}.topbar{flex-wrap:wrap;min-height:65px;gap:7px}.brand{flex:1}.top-actions{width:100%;justify-content:space-between;gap:4px}.top-actions button{flex:1;white-space:nowrap;padding:7px 3px;font-size:10px}#fullscreenBtn span{display:none}.workspace{display:flex;flex-direction:column;min-height:0}.activity-nav{flex-direction:row;flex-shrink:0;overflow-x:auto;padding:5px;gap:3px;border-right:0;border-bottom:1px solid var(--stroke)}.activity-nav button{min-width:71px;min-height:49px;padding:5px;gap:1px;font-size:9px}.activity-nav button .nav-num{font-size:12px}.stage{height:51dvh;min-height:320px;flex-shrink:0}.stage-heading{top:13px;left:15px}.stage-heading h2{font-size:21px;max-width:300px}.stage-heading p{font-size:10px;max-width:300px}.sidebar{border-left:0;border-top:1px solid var(--stroke);overflow:visible;padding:22px;max-height:none}.scene-legend{font-size:9px;left:15px;gap:8px;bottom:68px}.stage-tools button{font-size:9px;padding:6px}.stage-hint{font-size:8px}.stage-tools{bottom:30px;gap:4px}.voice-panel{margin-top:18px}footer{font-size:8px;padding:9px 12px;flex-wrap:wrap}#sessionStatus{display:none}.brand-logo{height:31px;width:31px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* v3.0: dois módulos no menu lateral */
nav button.nav-modulo{min-height:44px;font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:#7fb3c9;background:#0e2535;border:1px dashed #2b4a60;border-radius:10px;margin-top:6px;line-height:1.25}
nav button.nav-modulo.active{background:#123744;color:#bff3df;border:1px solid #2f6f62}
nav button[hidden]{display:none}