:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color-scheme:dark;--bg:#090f20;--card:#111e35;--card2:#152642;--txt:#f1f6ff;--muted:#b9c7d9;--line:#34455e;--accent:#67e3c8;--accent-dark:#062e30;--orange:#ffbe72;--shadow:0 22px 60px #0003;--fontscale:1}html[data-theme=light]{color-scheme:light;--bg:#f2f7ff;--card:#fff;--card2:#eaf2fc;--txt:#152c41;--muted:#3c5163;--line:#c8d7e5;--accent:#08796f;--accent-dark:#f1fffb;--orange:#a45a00;--shadow:0 18px 36px #20447716}*{box-sizing:border-box}html{scroll-behavior:smooth;font-size:calc(16px*var(--fontscale))}body{margin:0;background:var(--bg);color:var(--txt);line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:3px}a{color:inherit}a:hover{text-decoration-thickness:2px}.skip{position:absolute;top:-200px;left:1rem;padding:1rem;background:var(--accent);color:var(--accent-dark);z-index:10}.skip:focus{top:1rem}.top{max-width:1240px;margin:auto;padding:20px 22px;display:flex;gap:22px;align-items:center;justify-content:space-between}.logo{text-decoration:none;font-weight:900;font-size:1.1rem;white-space:nowrap}.logo span{color:var(--accent)}.logo small{font-size:.76rem;color:var(--muted)}nav{display:flex;flex-wrap:wrap;gap:16px;font-size:.87rem}nav a{color:var(--muted);text-decoration:none}.topbuttons{display:flex;gap:7px}.topbuttons button{background:var(--card);color:var(--txt);border:1px solid var(--line);border-radius:11px;padding:7px;cursor:pointer}main{max-width:1190px;margin:auto;padding:0 20px 80px}.hero{display:grid;grid-template-columns:1.3fr .7fr;align-items:center;gap:25px;min-height:300px;padding:34px 8px 35px}.eyebrow{font-size:.73rem;text-transform:uppercase;letter-spacing:.14em;font-weight:800;color:var(--accent)}h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.14;letter-spacing:-.045em;margin:.25em 0 .4em}h1 em{font-style:normal;color:var(--accent)}h2{font-size:clamp(1.3rem,2.5vw,1.9rem);letter-spacing:-.027em;margin:4px 0}h3{margin:.2em 0 .7em}p{margin:.3em 0 .85em}.hero>div>p:not(.eyebrow){max-width:680px;color:var(--muted)}.pills{display:flex;gap:8px;flex-wrap:wrap}.pills span,.chip{border:1px solid var(--line);background:var(--card2);color:var(--txt);border-radius:20px;font-size:.74rem;padding:5px 11px}.hero-decor{min-height:225px;border:1px solid var(--line);border-radius:24px;background:radial-gradient(circle at 20% 30%,#2e8d8559,transparent 58%),var(--card);display:grid;place-content:center;gap:20px;transform:rotate(-2deg)}.hero-formula{font-weight:850;font-size:2rem;color:var(--accent)}.hero-frame{font-weight:650;line-height:2}.hero-frame span{display:inline-grid;place-items:center;width:24px;height:24px;background:var(--accent);color:var(--accent-dark);border-radius:50%;margin-right:10px}.notice,.panel{border:1px solid var(--line);border-radius:22px;background:var(--card);box-shadow:var(--shadow);padding:25px;margin:22px 0}.notice{background:var(--card2);color:var(--muted);box-shadow:none}.notice strong{color:var(--txt)}.heading{display:flex;gap:14px;justify-content:space-between;align-items:flex-start;margin-bottom:20px}.heading p{color:var(--muted)}.counter{white-space:nowrap;border-radius:30px;color:var(--accent);border:1px solid var(--line);padding:8px 14px;font-size:.85rem}.filters{display:grid;grid-template-columns:1fr 1fr .8fr;gap:13px;margin-bottom:18px}label{display:block;font-weight:600;font-size:.86rem}label input,label select,textarea{display:block;width:100%;margin-top:5px;background:var(--bg);border:1px solid var(--line);color:var(--txt);border-radius:11px;padding:12px;min-width:0}input:focus,textarea:focus,select:focus{border-color:var(--accent)}.catalog{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.challenge-tile{min-width:0;padding:18px;background:var(--card2);border:1px solid var(--line);border-radius:17px;text-align:left;color:var(--txt);cursor:pointer;transition:transform .15s,border-color .15s}.challenge-tile:hover,.challenge-tile:focus-visible{transform:translateY(-2px);border-color:var(--accent)}.challenge-tile strong{display:block;font-size:.99rem;margin:7px 0}.challenge-tile .descr{font-size:.83rem;color:var(--muted);display:block}.tile-top{display:flex;justify-content:space-between;gap:6px;align-items:center}.tile-top small{color:var(--accent)}.tile-top .done{color:var(--orange)}.columns{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(250px,.85fr);gap:20px}.challenge,.teacher{border:1px solid var(--line);border-radius:18px;background:var(--card2);padding:19px;min-width:0}.context .question{font-weight:800;font-size:1.15rem}.drawing{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:18px 0;background:var(--bg)}.scene-head{padding:11px 15px;display:flex;justify-content:space-between;gap:10px;font-size:.78rem;border-bottom:1px solid var(--line)}.scene-head small,.small{font-size:.79rem;color:var(--muted)}.visual{padding:14px}.visual svg{width:100%;height:auto;max-height:265px;display:block}.visual .data-labels{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:10px 0 3px}.data-labels span{font-size:.8rem;background:var(--card);border:1px solid var(--line);border-radius:9px;padding:4px 9px;font-weight:650}.steps-head{display:flex;justify-content:space-between;gap:10px;font-size:.9rem;margin-bottom:10px}.steps-head span{color:var(--muted)}.track{display:flex;gap:5px;margin-bottom:20px}.track span{height:7px;border-radius:5px;flex:1;background:var(--line)}.track span.passed{background:var(--accent)}.track span.current{background:var(--orange)}.task{padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--card)}.answerRow{display:flex;gap:10px;margin:7px 0 12px}.answerRow input{flex:1;min-width:0;background:var(--card2);border-radius:10px;border:1px solid var(--line);color:var(--txt);padding:11px}.btn{border-radius:10px;border:1px solid var(--line);padding:10px 14px;font-weight:750;cursor:pointer;color:var(--txt);text-align:center}.btn.primary{background:var(--accent);color:var(--accent-dark);border-color:var(--accent)}.btn.secondary{background:var(--card2)}.btn.subtle{background:transparent;color:var(--muted)}.btn:disabled{opacity:.45;cursor:not-allowed}.tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.tools .btn{flex-shrink:0}.sidebar{display:flex;flex-direction:column;gap:15px;min-width:0}.teacher a{display:block;color:var(--accent);margin:8px 0;text-decoration:none;font-size:.89rem}.teacher p:not(.eyebrow){color:var(--muted)}.teacher .btn{width:100%;margin-top:8px}.full{width:100%}#feedback{min-height:25px;padding:5px 0;white-space:pre-wrap}#feedback.ok{color:var(--accent)}#feedback.warn{color:var(--orange)}.end{padding:18px;background:var(--card);border:1px solid var(--accent);border-radius:15px;margin-top:15px}.end h3{color:var(--accent)}.end textarea{resize:vertical}.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.stat{background:var(--card2);padding:18px;border:1px solid var(--line);border-radius:14px}.stat strong{display:block;color:var(--accent);font-size:1.7rem}.stat span{color:var(--muted);font-size:.83rem}footer{text-align:center;color:var(--muted);padding:15px 20px 40px;font-size:.85rem}#printArea{display:none}@media(max-width:930px){.catalog{grid-template-columns:repeat(2,minmax(0,1fr))}.columns{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:690px){.hero{grid-template-columns:1fr}.hero-decor{display:none}.top{flex-wrap:wrap}.top nav{order:3;width:100%;gap:12px}.filters{grid-template-columns:1fr}.catalog{grid-template-columns:1fr}.notice,.panel{padding:16px;border-radius:17px}.heading{flex-wrap:wrap}.columns,.sidebar,.stat-grid{grid-template-columns:1fr}.answerRow{flex-wrap:wrap}.answerRow .btn{width:100%}.scene-head{flex-wrap:wrap}.hero{padding:24px 4px}.tools .btn{flex:1}.topbuttons{margin-left:auto}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media print{html,body{background:white!important;color:black!important}body>*{display:none!important}#printArea{display:block!important;color:black;font:12pt/1.5 Arial;padding:0 10mm}#printArea h1{font-size:21pt}#printArea .sheet{page-break-inside:avoid;border-bottom:1px solid #999;margin-bottom:8mm;padding-bottom:4mm}#printArea .lines{height:30mm;border-bottom:1px dotted #aaa}#printArea small{color:#444}}

.plan-box{border:1px solid var(--line);border-radius:13px;background:var(--card);padding:11px 14px;margin:14px 0}.plan-box summary{cursor:pointer;font-weight:700;color:var(--accent)}.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0 5px}.plan-grid label{min-width:0;font-size:.82rem}.plan-grid textarea{font-size:.9rem;resize:vertical;min-height:90px}@media(max-width:690px){.plan-grid{grid-template-columns:1fr}}

/* 27.1 · Dades de les il·lustracions vinculades amb pistes de NOVA */
.mv-datum-option{border:1px solid #609ba7;border-radius:999px;padding:6px 12px;background:#173a52;color:#ecfffa;cursor:pointer;font:inherit;min-height:35px}.mv-datum-option:focus-visible{outline:3px solid #ffc66d;outline-offset:2px}.mv-datum-option.mv-datum-focus{background:#f8ca76;color:#162a3b;border-color:#f2da9f;font-weight:800;box-shadow:0 0 0 3px #e8a85d33}.mv-guided-visual svg{outline:2px dashed #f7c981;outline-offset:-3px;border-radius:10px}.mv-visual-status{font-size:.83rem;line-height:1.4;opacity:.92;margin:8px 0 0}.data-labels{display:flex;flex-wrap:wrap;gap:7px}.data-labels button{cursor:pointer}

.nova29-context{display:grid;gap:10px}.nova29-context a{display:block;min-height:44px;padding:10px 14px;border-radius:10px;border:1px solid #507e83;color:#8ee9d4;text-decoration:none}.nova29-context a:focus-visible{outline:3px solid #e3bb73}