:root{--navy: #15243f;--navy2: #1a2c4e;--gold: #f9b233;--orange: #f26122;--magenta: #ec0e73;--purple: #9b2b8c;--muted: #9fb6d6;--bg: #0e1830}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#0e1830,#16264a);color:#fff;font-family:Segoe UI,system-ui,sans-serif;min-height:100vh}.app header{display:flex;align-items:center;gap:12px;padding:12px 20px;background:var(--navy);border-bottom:3px solid #2e4066}.app header h1{font-size:20px;margin:0;letter-spacing:1px}.app header .sub{color:var(--gold);font-size:12px;letter-spacing:2px}.chip{margin-left:auto;background:var(--navy2);border:2px solid #2e4066;border-radius:999px;padding:6px 14px;font-size:14px;display:flex;gap:10px;align-items:center}main{padding:18px}.card{background:var(--navy2);border:2px solid #2e4066;border-radius:16px;padding:24px;max-width:640px;margin:40px auto}.card.narrow{max-width:380px}.center{text-align:center}.panel{background:var(--navy2);border:2px solid #2e4066;border-radius:14px;padding:12px 14px}.panel h2{margin:0 0 6px;font-size:14px;color:var(--gold);letter-spacing:1px}.panel p{margin:4px 0;font-size:14px}.panel .hint,.hint{color:var(--muted);font-size:12.5px}.muted{color:var(--muted)}.err{color:#ff7ab0}input{width:100%;padding:12px;font-size:18px;text-align:center;border-radius:12px;border:2px solid #2e4066;background:#0b1428;color:#fff;margin-bottom:12px;text-transform:uppercase}button{padding:11px 18px;font-size:15px;font-weight:700;border:none;border-radius:12px;cursor:pointer;background:var(--muted);color:var(--navy);transition:transform .08s,filter .15s}button:hover{filter:brightness(1.1)}button:active{transform:scale(.97)}button:disabled{filter:grayscale(.6);opacity:.6;cursor:default}button.primary{background:var(--gold)}button.link{background:none;color:var(--muted);font-weight:400;padding:4px 6px;text-decoration:underline}pre{background:#0b1428;border-radius:10px;padding:12px;font-size:13px;line-height:1.5;overflow-x:auto;color:#cfe3ff}details summary{cursor:pointer;font-size:14px;color:var(--gold);font-weight:600}.grid-alumnos{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px;margin:18px 0}.alumno{display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px 8px;background:#0b1428;color:#fff;border:2px solid #2e4066;border-radius:14px;font-weight:600}.alumno:hover{border-color:var(--gold)}.alumno .avatar{font-size:34px}.mapa{max-width:760px;margin:0 auto;text-align:center}.mapa h2{margin-bottom:28px}.stars .on{color:var(--gold)}.stars .off{color:#33456b}.stars.sm .on,.stars.sm .off{font-size:13px}.mapa-path{position:relative;margin:0 auto}.mapa-svg{position:absolute;top:0;left:0;z-index:0;overflow:visible}.mapa-svg path{fill:none;stroke-width:7;stroke-linecap:round}.mapa-svg .camino-resto{stroke:#26375c;stroke-dasharray:2 18}.mapa-svg .camino-hecho{stroke:var(--gold);stroke-dasharray:2 18}.mundo-banner{position:absolute;left:50%;transform:translate(-50%);background:var(--navy2);border:2px solid #2e4066;border-radius:999px;padding:6px 18px;font-size:11.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold);white-space:nowrap;z-index:1}.nivel-node{position:absolute;transform:translate(-50%,-50%);width:60px;height:60px;border-radius:50%;background:var(--navy2);border:3px solid #2e4066;color:var(--muted);font-size:21px;font-weight:800;display:flex;align-items:center;justify-content:center;z-index:2;padding:0}.nivel-node.done{background:var(--gold);border-color:var(--gold);color:var(--navy)}.nivel-node.next{color:#fff;border-color:var(--gold);box-shadow:0 0 0 5px #f9b23338}.nivel-node .ping{position:absolute;top:-8px;right:-8px;bottom:-8px;left:-8px;border-radius:50%;border:3px solid var(--gold);animation:mapa-ping 1.6s ease-out infinite}@keyframes mapa-ping{0%{transform:scale(.85);opacity:.8}to{transform:scale(1.4);opacity:0}}.nivel-node-label{position:absolute;transform:translate(-50%);width:150px;text-align:center;z-index:1}.nivel-node-title{font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.juego{display:flex;gap:14px;flex-wrap:wrap}.juego-left{flex:1 1 480px;min-width:400px}.blockly-host{height:620px;border-radius:14px;overflow:hidden;border:2px solid #2e4066;background:#f4f6fa}.juego-right{flex:0 0 520px;max-width:100%;display:flex;flex-direction:column;gap:10px}.game-canvas{width:100%;border-radius:14px;border:2px solid #2e4066;background:#101c36;display:block}.btns{display:flex;gap:10px}.btns button{flex:1}