/* Sesión 2 · Prueba con otra persona: la prueba en vivo (cursor de quien prueba, hoja de observación y rotación) */
.pu2{position:relative;display:grid;grid-template-columns:760px 1fr;gap:40px;align-items:start;margin-top:28px}
.pu2-izq,.pu2-der{display:flex;flex-direction:column;min-width:0}
.pu2-izq{gap:14px}
.pu2-der{gap:18px}

/* consigna */
.pu2-con{padding:14px 22px 16px;border-radius:20px;background:color-mix(in srgb,var(--cap) 7%,transparent);border:1px solid color-mix(in srgb,var(--cap) 26%,transparent);transition:border-color .6s,box-shadow .6s,background .6s}
.pu2-con small{display:block;font-size:17px;color:color-mix(in srgb,var(--cap) 42%,#fff);margin-bottom:5px}
.pu2-con p{font-family:var(--tt);font-weight:500;font-size:26px;line-height:1.24;letter-spacing:-.02em;color:#fff}
.pu2-con.pu2-lee{border-color:color-mix(in srgb,var(--cap) 72%,transparent);background:color-mix(in srgb,var(--cap) 11%,transparent);box-shadow:0 0 0 4px color-mix(in srgb,var(--cap) 12%,transparent)}

/* ventana del prototipo (simulación genérica) */
.pu2-win{position:relative;height:236px;border-radius:18px;background:linear-gradient(180deg,#0E1322,#0A0D18);border:1px solid rgba(150,175,235,.17);box-shadow:0 34px 70px -34px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.05);overflow:hidden;cursor:pointer}
.pu2-win>*{transition:opacity .6s var(--ease)}
.pu2-win.pu2-tenue>*{opacity:.35}
.pu2-bar{display:flex;align-items:center;gap:7px;height:40px;padding:0 16px;border-bottom:1px solid rgba(255,255,255,.07);background:rgba(255,255,255,.03)}
.pu2-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.15)}
.pu2-bar b{margin-left:10px;font-weight:500;font-size:17px;color:#C9D3EA}
.pu2-bar em{margin-left:auto;font-style:normal;font-size:17px;color:#7C8293}
.pu2-tabs{display:flex;gap:2px;height:42px;padding:0 10px;border-bottom:1px solid rgba(255,255,255,.07)}
.pu2-tabs span{display:flex;align-items:center;padding:0 14px;font-size:17px;color:#8E94A5;box-shadow:inset 0 -2px 0 transparent;transition:color .4s,box-shadow .4s,background .4s}
.pu2-tabs .pu2-act{color:#F5F5F7;box-shadow:inset 0 -2px 0 #9CC6FF}
.pu2-tabs .pu2-duda{color:#F5C84B;background:rgba(245,200,75,.09);box-shadow:inset 0 -2px 0 rgba(245,200,75,.75)}
.pu2-cuerpo{display:grid;grid-template-columns:44% 1fr;height:152px}
.pu2-lista{list-style:none;margin:0;padding:9px 8px;display:grid;align-content:start;gap:3px;border-right:1px solid rgba(255,255,255,.07)}
.pu2-lista li{display:flex;align-items:center;gap:12px;height:30px;padding:0 12px;border-radius:9px;transition:background .35s}
.pu2-lista li i{flex:none;width:13px;height:13px;border-radius:4px;border:1.5px solid rgba(255,255,255,.25)}
.pu2-lista li u{display:block;height:8px;border-radius:4px;background:rgba(255,255,255,.14);transition:background .35s}
.pu2-lista li s{margin-left:auto;flex:none;width:42px;height:14px;border-radius:7px;background:rgba(255,255,255,.08)}
.pu2-lista .pu2-sobre{background:rgba(255,255,255,.05)}
.pu2-lista .pu2-sel{background:rgba(156,198,255,.11)}
.pu2-lista .pu2-sel u{background:rgba(205,225,255,.42)}
.pu2-det{position:relative;padding:16px 20px 14px;display:flex;flex-direction:column}
.pu2-dtx{display:flex;flex-direction:column;gap:10px}
.pu2-dtx u{display:block;height:8px;border-radius:4px;background:rgba(255,255,255,.12)}
.pu2-dtx u.pu2-h{height:12px;margin-bottom:4px;background:rgba(255,255,255,.22)}
.pu2-pie{margin-top:auto;display:flex;align-items:center;gap:12px}
.pu2-chip{flex:none;display:inline-flex;align-items:center;gap:8px;padding:4px 14px 4px 11px;border-radius:999px;font-size:17px;color:#D9E6FF;border:1px solid rgba(156,198,255,.32);background:rgba(156,198,255,.07)}
.pu2-chip svg{width:13px;height:16px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linejoin:round}
.pu2-obs{flex:1;height:32px;border-radius:9px;border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;padding:0 12px}
.pu2-obs u{display:block;width:46%;height:7px;border-radius:4px;background:rgba(255,255,255,.1)}
/* la fuente abierta: el documento citado y la línea que sirve de evidencia */
.pu2-cita{position:absolute;left:20px;right:20px;bottom:52px;padding:12px 14px 14px;border-radius:14px;background:#141A2B;border:1px solid rgba(46,211,198,.45);box-shadow:0 18px 40px -12px rgba(0,0,0,.85);display:grid;gap:9px;opacity:0;transform:translateY(8px) scale(.96);transform-origin:12% 100%;transition:opacity .35s var(--ease),transform .5s var(--ease);pointer-events:none}
.pu2-cita.pu2-ve{opacity:1;transform:none}
.pu2-cita header{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.pu2-cita b{font-family:var(--tt);font-weight:600;font-size:18px;line-height:1;color:#5BE0D3;margin-right:4px}
.pu2-cita header u{display:block;width:46px;height:12px;border-radius:6px;background:rgba(91,224,211,.18)}
.pu2-cita>u{position:relative;display:block;height:8px;border-radius:4px;background:rgba(255,255,255,.13);overflow:hidden}
.pu2-cita .pu2-ev::after{content:"";position:absolute;inset:0;background:#2ED3C6;box-shadow:0 0 12px #2ED3C6;transform:scaleX(0);transform-origin:left;transition:transform .8s var(--ease)}
.pu2-cita .pu2-ev.pu2-ve::after{transform:none}

/* cursor de quien prueba, duda, clic y punto que lleva la observación a la hoja */
.pu2-cur{position:absolute;left:0;top:0;z-index:5;pointer-events:none;opacity:0;transition-property:transform,opacity;transition-duration:700ms,.4s;transition-timing-function:cubic-bezier(.55,.06,.25,1),ease}
.pu2-cur.pu2-ve{opacity:1}
.pu2-cur svg{position:absolute;left:-2px;top:-2px;width:22px;height:27px;fill:#FF6B5A;stroke:#fff;stroke-width:1.4;stroke-linejoin:round;filter:drop-shadow(0 4px 8px rgba(0,0,0,.55))}
.pu2-cur span{position:absolute;left:17px;top:23px;white-space:nowrap;padding:2px 11px 3px;border-radius:4px 12px 12px 12px;font-size:17px;font-weight:600;color:#2A0D08;background:#FF6B5A;box-shadow:0 8px 18px -8px rgba(255,107,90,.8);transition:top .3s var(--ease)}
.pu2-cur.pu2-alto span{top:-34px;border-radius:12px 12px 12px 4px}
.pu2-cur.pu2-tiembla svg{animation:pu2-tiembla .8s ease-in-out infinite}
.pu2-cur.pu2-pulsa svg{animation:pu2-pulsa .35s ease}
@keyframes pu2-tiembla{0%,100%{transform:translate(0,0)}25%{transform:translate(-3px,1px)}75%{transform:translate(3px,-1px)}}
@keyframes pu2-pulsa{50%{transform:scale(.82)}}
.pu2-q{position:absolute;left:0;top:0;z-index:6;width:36px;height:36px;margin:-18px 0 0 -18px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-family:var(--tt);font-weight:600;font-size:22px;color:#241A00;background:#F5C84B;box-shadow:0 0 0 6px rgba(245,200,75,.16),0 8px 24px -6px rgba(245,200,75,.6);opacity:0;transform:scale(.3);transition:opacity .25s,transform .45s cubic-bezier(.34,1.56,.64,1);pointer-events:none}
.pu2-q.pu2-ve{opacity:1;transform:none}
.pu2-clic{position:absolute;z-index:4;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;border:2px solid #FF6B5A;pointer-events:none;animation:pu2-onda .7s var(--ease) forwards}
@keyframes pu2-onda{from{transform:scale(.2);opacity:1}to{transform:scale(1.5);opacity:0}}
.pu2-vuela{position:absolute;left:0;top:0;z-index:7;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;background:#FF6B5A;box-shadow:0 0 0 4px rgba(255,107,90,.22),0 0 18px #FF6B5A;pointer-events:none}

/* reglas, con su icono: se iluminan cuando la simulación pasa por ellas */
.pu2-reglas{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.pu2-reglas li{display:grid;grid-template-columns:22px 1fr;gap:12px;align-items:start;font-size:19px;line-height:1.38;color:#C9CDD8;transition:color .5s}
.pu2-reglas li svg{width:20px;height:20px;margin-top:3px;fill:none;stroke:color-mix(in srgb,var(--cap) 72%,#fff);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;transition:filter .5s,stroke .5s}
.pu2-reglas li.pu2-luz{color:#fff}
.pu2-reglas li.pu2-luz svg{stroke:var(--cap);filter:drop-shadow(0 0 6px var(--cap))}

/* rotación */
.pu2-rot{display:grid;grid-template-columns:160px 1fr;gap:24px;align-items:center}
.pu2-rbox{cursor:pointer}
.pu2-rsvg{display:block;width:160px;height:160px;overflow:visible}
.pu2-rtx{display:grid;gap:10px}
.pu2-rtx p{font-size:19px;line-height:1.38;color:#C9CDD8;text-wrap:balance;transition:color .5s}
.pu2-rtx p:first-child{color:#F5F5F7}
.pu2-rtx p.pu2-luz{color:#fff}
.pu2-rsvg .pu2-anillo{fill:none;stroke:rgba(255,255,255,.07)}
.pu2-rsvg .pu2-arco{fill:none;stroke:rgba(255,107,90,.45);stroke-width:1.6;stroke-linecap:round}
.pu2-rsvg .pu2-arco.pu2-uno{stroke:#FF6B5A}
.pu2-rsvg .pu2-halo{fill:#FF6B5A}
.pu2-rsvg .pu2-disco{fill:#0D1120;stroke:rgba(255,255,255,.26);stroke-width:1.2}
.pu2-rsvg .pu2-dos .pu2-disco{stroke:#FF6B5A;stroke-width:1.6}
.pu2-rsvg text{font-family:var(--tt);font-weight:500;font-size:20px;fill:#F5F5F7;text-anchor:middle;dominant-baseline:central}
.pu2-rsvg .pu2-ficha path{fill:#FF6B5A;stroke:#fff;stroke-width:1.2;stroke-linejoin:round}

/* hoja de observación */
.pu2-hoja{padding:12px 16px 8px}
.pu2-hcab{display:flex;align-items:center;justify-content:space-between;padding:0 6px 10px}
.pu2-hcab b{font-family:var(--tt);font-weight:500;font-size:22px;letter-spacing:-.02em}
.pu2-hcab .btn{padding:6px 15px}
.pu2-campo{display:grid;grid-template-columns:20px 1fr auto;align-items:center;gap:12px;width:100%;height:46px;padding:0 10px;text-align:left;border-top:1px solid var(--line);border-radius:10px;transition:background .35s}
.pu2-campo:hover{background:rgba(255,255,255,.035)}
.pu2-campo.pu2-foco{background:color-mix(in srgb,var(--cap) 11%,transparent)}
.pu2-st{width:18px;height:18px;border-radius:50%;border:1.5px solid rgba(255,255,255,.24);display:grid;place-items:center;transition:background .35s,border-color .35s}
.pu2-st::after{content:"";width:7px;height:4px;margin-top:-2px;border-left:2px solid #1C0704;border-bottom:2px solid #1C0704;transform:rotate(-45deg) scale(0);transition:transform .3s .1s}
.pu2-lleno .pu2-st{background:var(--cap);border-color:var(--cap)}
.pu2-lleno .pu2-st::after{transform:rotate(-45deg) scale(1)}
.pu2-et{display:flex;align-items:baseline;gap:10px;min-width:0}
.pu2-et b{font-weight:500;font-size:19px;color:#F5F5F7;white-space:nowrap}
.pu2-et small{font-size:17px;color:var(--faint);white-space:nowrap;transition:color .35s}
.pu2-foco .pu2-et small{color:#D4D4D9}
.pu2-val{font-family:var(--tt);font-weight:500;font-size:19px;color:#fff;white-space:nowrap;clip-path:inset(0 100% 0 0);transition:clip-path .8s var(--ease)}
.pu2-lleno .pu2-val{clip-path:inset(0 0 0 0)}
.pu2-sn{display:inline-flex;padding:2px;border-radius:999px;border:1px solid rgba(255,255,255,.14)}
.pu2-sn em{font-style:normal;font-size:17px;padding:1px 13px;border-radius:999px;color:#8E94A5;transition:background .4s,color .4s}
.pu2-lleno .pu2-sn em:first-child{background:var(--cap);color:#1C0704;font-weight:600}
.pu2-crono{display:inline-flex;align-items:center;gap:9px}
.pu2-crono svg{width:24px;height:24px;fill:none;stroke:#A9AEBB;stroke-width:1.6;stroke-linecap:round}
.pu2-crono .pu2-aguja{transform-box:view-box;transform-origin:12px 13.5px}
.pu2-corre .pu2-aguja{stroke:var(--cap);animation:pu2-gira 2.4s linear infinite}
.pu2-par .pu2-aguja{animation-play-state:paused}
@keyframes pu2-gira{to{transform:rotate(360deg)}}