/* Tutor de escenario: personaje animado en SVG y sus controles. Los colores salen de variables propias,
   que heredan las del sitio cuando existen, para que sirva igual en el runner y en las demostraciones. */
.fu-tutor{--tutor-panel:var(--preview-panel,#111216);--tutor-ink:var(--preview-ink,#f4efe6);--tutor-muted:var(--preview-muted,#b7b0a5);--tutor-gold:var(--preview-gold,#e8b56d);--tutor-line:var(--preview-line,rgba(244,239,230,.18));--tutor-dark:#05070c;--tutor-skin:#1b1f2a;margin-top:34px;margin-bottom:0}
.fu-tutor[hidden]{display:none}
.fu-tutor-card{display:grid;grid-template-columns:150px minmax(0,1fr);gap:26px;align-items:start;padding:22px;border:1px solid var(--tutor-line);border-radius:18px;color:var(--tutor-ink);background:rgba(17,18,22,.92);box-shadow:0 24px 90px rgba(0,0,0,.18);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
.fu-tutor-stage{position:relative}
.fu-tutor-avatar{display:block;width:100%;height:auto;overflow:visible;pointer-events:none;user-select:none}
.fu-tutor-kicker{margin:0 0 8px;color:var(--tutor-gold);font-size:.66rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
.fu-tutor-title{margin:0 0 6px;color:var(--tutor-ink);font:400 1.5rem/1.15 Georgia,serif}
.fu-tutor-help{margin:0 0 14px;color:var(--tutor-muted);font-size:.8rem;line-height:1.5}
.fu-tutor-progress{min-height:1.1em;margin:0 0 6px;color:var(--tutor-gold);font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.fu-tutor-caption{min-height:4.6em;margin:0 0 14px;color:var(--tutor-ink);font-size:1rem;line-height:1.5}
.fu-tutor-controls{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 6px}
.fu-tutor-button{min-height:42px;padding:9px 18px;border:1px solid var(--tutor-gold);border-radius:999px;color:var(--tutor-dark);background:var(--tutor-gold);font:inherit;font-size:.8rem;font-weight:800;cursor:pointer}
.fu-tutor-button.quiet{border-color:var(--tutor-line);color:var(--tutor-muted);background:transparent;font-weight:600}
.fu-tutor-button[hidden]{display:none}
.fu-tutor-button:hover{filter:brightness(1.08)}
.fu-tutor-button.quiet:hover{border-color:var(--tutor-gold);color:var(--tutor-ink);filter:none}
.fu-tutor-button:focus-visible,.fu-tutor-question:focus-visible,.fu-tutor-transcript summary:focus-visible{outline:2px solid var(--tutor-gold);outline-offset:3px}
.fu-tutor-note{margin:10px 0 0;color:var(--tutor-muted);font-size:.76rem}
.fu-tutor-note[hidden]{display:none}
.fu-tutor-questions{margin-top:18px;padding-top:16px;border-top:1px solid var(--tutor-line)}
.fu-tutor-questions h3{margin:0 0 10px;color:var(--tutor-muted);font-size:.7rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.fu-tutor-question-list{display:flex;flex-wrap:wrap;gap:8px}
.fu-tutor-question{min-height:38px;padding:8px 14px;border:1px solid var(--tutor-line);border-radius:14px;color:var(--tutor-ink);background:transparent;font:inherit;font-size:.8rem;line-height:1.35;text-align:left;cursor:pointer}
.fu-tutor-question:hover{border-color:var(--tutor-gold)}
.fu-tutor-question[aria-pressed=true]{border-color:var(--tutor-gold);color:var(--tutor-dark);background:var(--tutor-gold)}
.fu-tutor-transcript{margin-top:16px;color:var(--tutor-muted);font-size:.82rem;line-height:1.55}
.fu-tutor-transcript summary{color:var(--tutor-gold);font-size:.76rem;cursor:pointer}
.fu-tutor-transcript p,.fu-tutor-transcript ol,.fu-tutor-transcript dl{margin:10px 0 0}
.fu-tutor-transcript ol{padding-left:20px}
.fu-tutor-transcript dt{margin-top:10px;color:var(--tutor-ink);font-weight:700}
.fu-tutor-transcript dd{margin:2px 0 0}

/* Personaje */
.fu-tutor-halo{fill:var(--tutor-gold);opacity:.07}
.fu-tutor-ring{fill:none;stroke:var(--tutor-gold);stroke-width:1.2;opacity:.34}
.fu-tutor-electron{fill:var(--tutor-gold)}
.fu-tutor-orbit{transform-origin:100px 92px;animation:fu-tutor-orbit 14s linear infinite}
.fu-tutor-body,.fu-tutor-skull,.fu-tutor-neck,.fu-tutor-ear{fill:var(--tutor-skin);stroke:var(--tutor-gold);stroke-width:2}
.fu-tutor-face{fill:var(--tutor-dark);stroke:var(--tutor-line);stroke-width:1.5}
.fu-tutor-emblem{fill:none;stroke:var(--tutor-gold);stroke-width:1.5;opacity:.7}
.fu-tutor-core,.fu-tutor-bulb{fill:var(--tutor-gold)}
.fu-tutor-antenna,.fu-tutor-limb,.fu-tutor-limb-edge{fill:none;stroke:var(--tutor-gold);stroke-width:2;stroke-linecap:round}
.fu-tutor-limb-edge{stroke-width:13}
.fu-tutor-limb{stroke-width:9;stroke:var(--tutor-skin)}
.fu-tutor-hand{fill:var(--tutor-skin);stroke:var(--tutor-gold);stroke-width:2}
.fu-tutor-eye{fill:var(--tutor-ink)}
.fu-tutor-brow{fill:none;stroke:var(--tutor-muted);stroke-width:2.4;stroke-linecap:round}
.fu-tutor-smile{fill:none;stroke:var(--tutor-gold);stroke-width:3;stroke-linecap:round}
.fu-tutor-mouth{fill:var(--tutor-gold);opacity:0}
.fu-tutor-figure{transform-origin:100px 230px;animation:fu-tutor-breathe 5.5s ease-in-out infinite}
.fu-tutor-eyes{transform-box:fill-box;transform-origin:center;animation:fu-tutor-blink 5.2s infinite}
.fu-tutor-brows{transition:transform .3s ease}
.fu-tutor-arm{transform-origin:150px 176px;transform:rotate(78deg);transition:transform .45s cubic-bezier(.3,1.4,.5,1)}
.fu-tutor-head{transform-origin:100px 132px;transition:transform .4s ease}
.fu-tutor.is-speaking .fu-tutor-smile{opacity:0}
.fu-tutor.is-speaking .fu-tutor-mouth{opacity:1}
.fu-tutor.is-speaking .fu-tutor-bulb{animation:fu-tutor-pulse 1.1s ease-in-out infinite}
.fu-tutor.is-speaking .fu-tutor-head{animation:fu-tutor-nod 3.4s ease-in-out infinite}
.fu-tutor.is-pointing .fu-tutor-arm{transform:rotate(0deg)}
.fu-tutor.is-answering .fu-tutor-brows{transform:translateY(-3px)}
.fu-tutor.is-answering .fu-tutor-head{transform:rotate(-4deg)}
.fu-tutor.is-paused .fu-tutor-figure{animation-play-state:paused}
@keyframes fu-tutor-orbit{to{transform:rotate(360deg)}}
@keyframes fu-tutor-breathe{0%,100%{transform:translateY(0)}50%{transform:translateY(-2.5px)}}
@keyframes fu-tutor-blink{0%,94%,100%{transform:scaleY(1)}96.5%{transform:scaleY(.08)}}
@keyframes fu-tutor-pulse{0%,100%{opacity:1}50%{opacity:.35}}
@keyframes fu-tutor-nod{0%,100%{transform:rotate(0deg)}30%{transform:rotate(2.2deg)}65%{transform:rotate(-1.8deg)}}

/* Mientras explica, el tutor acompaña al lector en una esquina para que se vea a la vez que el laboratorio. */
.fu-tutor.is-live .fu-tutor-card{position:fixed;right:16px;bottom:16px;z-index:30;width:min(430px,calc(100vw - 32px));grid-template-columns:92px minmax(0,1fr);gap:14px;padding:14px 16px;background:rgba(13,14,18,.97);box-shadow:0 18px 60px rgba(0,0,0,.6);border-color:var(--tutor-gold)}
.fu-tutor.is-live .fu-tutor-title,.fu-tutor.is-live .fu-tutor-help,.fu-tutor.is-live .fu-tutor-questions,.fu-tutor.is-live .fu-tutor-transcript,.fu-tutor.is-live .fu-tutor-kicker{display:none}
.fu-tutor.is-live .fu-tutor-caption{min-height:4.4em;margin-bottom:10px;font-size:.9rem;line-height:1.45}
.fu-tutor.is-live .fu-tutor-button{min-height:36px;padding:6px 14px;font-size:.74rem}

@media(max-width:700px){
.fu-tutor-card{grid-template-columns:1fr;gap:10px;padding:18px}
.fu-tutor-stage{width:120px;margin:0 auto}
.fu-tutor.is-live .fu-tutor-card{left:8px;right:8px;bottom:8px;width:auto;grid-template-columns:64px minmax(0,1fr);gap:10px;padding:10px 12px}
.fu-tutor.is-live .fu-tutor-stage{width:64px;margin:0}
.fu-tutor.is-live .fu-tutor-caption{min-height:5.6em;font-size:.84rem}
}
@media(prefers-reduced-motion:reduce){
.fu-tutor-orbit,.fu-tutor-figure,.fu-tutor-eyes,.fu-tutor.is-speaking .fu-tutor-bulb,.fu-tutor.is-speaking .fu-tutor-head{animation:none}
.fu-tutor-arm,.fu-tutor-head,.fu-tutor-brows{transition:none}
}