/*
 * ═══════════════════════════════════════════════════════════════════════════
 *  LA ÚLTIMA PISTA — lup-demos.css
 *  Componentes compartidos y específicos de demo-player.html y
 *  demo-viewer.html. Requiere: lup.css
 * ═══════════════════════════════════════════════════════════════════════════
 */


/* ══════════════════════════════════════════════════════
   UTILITIES (reemplaza main.css en las demos)
══════════════════════════════════════════════════════ */
.mono{font-family:var(--mono)}
.hint-lbl{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--d-muted)}
.answer-hint__val{font-family:var(--mono);font-size:.8rem;color:var(--d-cream);display:none}

/* ══════════════════════════════════════════════════════
   PAGE HEADER (compartido por ambas demos)
══════════════════════════════════════════════════════ */
.page-header{
  background:var(--d-bg);
  padding:clamp(8rem,14vw,12rem) 0 clamp(3rem,5vw,5rem);
  position:relative;overflow:hidden;
}
.page-header::before{
  content:'';position:absolute;top:-15%;right:-5%;
  width:55vw;height:70vh;max-width:700px;
  background:radial-gradient(ellipse,rgba(200,168,72,.07) 0%,transparent 65%);
  border-radius:50%;pointer-events:none;
}
.page-header__breadcrumb{
  font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--d-muted);margin-bottom:2rem;
  display:flex;align-items:center;gap:.5rem;
}
.page-header__breadcrumb a{color:var(--d-muted);transition:color .2s}
.page-header__breadcrumb a:hover{color:var(--d-cream)}
.page-header__breadcrumb span{color:var(--gold)}
.page-header__breadcrumb::before{content:'›';color:var(--d-faint)}
.page-header__tag{
  font-size:.72rem;font-weight:500;letter-spacing:.18em;text-transform:uppercase;
  color:var(--gold);margin-bottom:1.25rem;display:flex;align-items:center;gap:.6rem;
}
.page-header__tag::before{content:'';width:24px;height:1px;background:var(--gold);opacity:.5}
.page-header h1{font-size:clamp(3rem,7vw,7.5rem);margin-bottom:1.5rem}
.page-header h1 em{color:var(--gold);font-style:italic}
.page-header__lead{font-size:.95rem;line-height:1.9;color:var(--d-cream);max-width:560px;margin-bottom:2.5rem;font-weight:300}

/* ══════════════════════════════════════════════════════
   DEMO HERO NOTICE (inline, debajo del eyebrow)
══════════════════════════════════════════════════════ */
.demo-hero__notice{
  display:inline-flex;align-items:center;gap:.5rem;
  margin:0 0 2rem;
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(200,168,72,.85);
}
.demo-hero__notice-dot{
  width:5px;height:5px;border-radius:50%;background:var(--gold);opacity:.5;
  animation:lup-demo-pulse 2s ease-in-out infinite;flex-shrink:0;
}
@keyframes lup-demo-pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* ══════════════════════════════════════════════════════
   EDU STRIP (ambas demos)
══════════════════════════════════════════════════════ */
.edu-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--d-brd2);
  border:1px solid var(--d-brd2);border-radius:var(--r2);
  overflow:hidden;margin-top:2.5rem;
}
.edu-item{background:var(--d-lift);padding:1.1rem 1.25rem;display:flex;align-items:center;gap:.85rem}
.edu-item__glyph{font-family:var(--serif);font-size:1.8rem;color:var(--gold);line-height:1;flex-shrink:0;font-weight:300}
.edu-item__body{display:flex;flex-direction:column;gap:.15rem}
.edu-item__label{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--d-muted)}
.edu-item__value{font-size:.82rem;color:var(--d-paper);font-weight:400}

/* ══════════════════════════════════════════════════════
   CTA SECTION (compartida por ambas demos)
══════════════════════════════════════════════════════ */
.demo-cta{background:var(--d-bg);padding:clamp(4rem,8vw,7rem) 0;text-align:center}
.demo-cta__wrap{max-width:560px;margin:0 auto;padding:0 clamp(1.25rem,5vw,3rem)}
.demo-cta h2,.demo-cta__title{color:var(--d-paper);margin-bottom:1.25rem}
.demo-cta h2 em,.demo-cta__title em{color:var(--gold);font-style:italic}
.demo-cta p,.demo-cta__sub{color:var(--d-cream);margin-bottom:2.5rem;font-size:.95rem;line-height:1.8}
.demo-cta__eyebrow{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:1rem;opacity:.9}
.demo-cta-actions,.demo-cta__btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.demo-cta__btn-p{
  display:inline-flex;align-items:center;
  padding:.85rem 2rem;background:var(--gold);color:var(--d-bg);
  font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.08em;
  border-radius:var(--r2);text-decoration:none;transition:background .18s,transform .15s;
}
.demo-cta__btn-p:hover{background:var(--gold-lt);transform:translateY(-2px)}
.demo-cta__btn-g{
  display:inline-flex;align-items:center;
  padding:.85rem 2rem;background:transparent;color:var(--d-paper);
  border:1px solid rgba(200,168,72,.35);
  font-family:var(--mono);font-size:.7rem;font-weight:500;letter-spacing:.08em;
  border-radius:var(--r2);text-decoration:none;transition:all .18s;
}
.demo-cta__btn-g:hover{border-color:rgba(200,168,72,.7);color:var(--gold)}

/* ══════════════════════════════════════════════════════
   DEMO PLAYER — APP SHELL
══════════════════════════════════════════════════════ */
.demo-hero{
  background:var(--d-bg);
  padding:6rem 0 0;
  border-bottom:1px solid var(--d-brd);
  position:relative;overflow:hidden;
}
.demo-hero__bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(ellipse 55% 55% at 20% 70%,rgba(200,168,72,.07),transparent 60%),
    radial-gradient(ellipse 40% 50% at 85% 20%,rgba(200,168,72,.04),transparent 55%);
}
.demo-hero__wrap{
  max-width:960px;margin:0 auto;
  padding:0 clamp(1.25rem,5vw,3rem) 3rem;
  position:relative;z-index:1;
}
.demo-hero__eyebrow{
  font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(200,168,72,.9);margin:0 0 .85rem;
}
.demo-hero__title{
  font-family:var(--serif);font-size:clamp(3rem,8vw,7rem);
  font-weight:300;line-height:.93;color:var(--d-paper);
  margin:0 0 1.25rem;letter-spacing:-.02em;
}
.demo-hero__title em{font-style:italic;color:var(--gold)}
.demo-hero__lead{
  font-size:.8rem;line-height:1.75;
  color:rgba(200,187,168,.88);max-width:520px;margin:0 0 2rem;
}

/* Edu strip variante player */
.demo-edu{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:rgba(200,168,72,.14);
  border-top:1px solid rgba(200,168,72,.14);
}
.demo-edu__item{background:var(--d-bg);padding:1rem 1.25rem;display:flex;align-items:center;gap:.75rem}
.demo-edu__glyph{font-family:var(--serif);font-size:1.5rem;color:var(--gold);line-height:1;flex-shrink:0;font-style:italic}
.demo-edu__text{font-size:.72rem;line-height:1.55;color:rgba(200,187,168,.82)}
.demo-edu__text strong{color:var(--d-paper);font-weight:400}

/* App area */
.demo-app{max-width:840px;margin:0 auto;padding:2rem clamp(1.25rem,5vw,2.5rem) 7rem;background:var(--d-bg)}
/* Override body/light-theme text inside demo-app */
.demo-app,
.demo-app p,
.demo-app span,
.demo-app div,
.demo-app label{
  color:var(--d-cream);
  font-size:.88rem;
}
.demo-app strong{color:var(--d-paper)}

/* Progress and status text */
.demo-progress-lbl{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--d-muted);
}
.demo-progress-num{
  font-family:var(--serif);font-size:1.6rem;color:var(--gold);
  font-weight:300;line-height:1;
}
#statusMsg{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--d-cream);
}

/* Login screen */
.demo-login__eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);opacity:.9;margin-bottom:.75rem;
}
.demo-login__title{
  font-family:var(--serif);font-size:clamp(2rem,5vw,3.5rem);
  color:var(--d-paper);margin-bottom:2rem;font-weight:300;
}
.demo-login__title em{color:var(--gold);font-style:italic}
.demo-login__field{
  max-width:200px;margin:0 auto 1.25rem;
}
.demo-pin{
  width:100%;text-align:center;
  background:var(--d-lift);border:none;border-bottom:2px solid rgba(200,168,72,.4);
  font-family:var(--mono);font-size:1.75rem;letter-spacing:.3em;
  color:var(--gold);padding:.75rem 1rem;border-radius:var(--r2) var(--r2) 0 0;
  outline:none;transition:border-color .2s;
}
.demo-pin:focus{border-bottom-color:var(--gold)}
.demo-pin::placeholder{opacity:.3;letter-spacing:.2em}
.demo-pin-btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.9rem 3rem;background:var(--gold);color:var(--d-bg);
  font-family:var(--mono);font-size:.72rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  border:none;border-radius:var(--r2);cursor:pointer;
  transition:background .18s,transform .15s;margin-bottom:1.5rem;
}
.demo-pin-btn:hover{background:var(--gold-lt);transform:translateY(-2px)}
.demo-pin-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.demo-login__hint{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;
  color:var(--d-muted);text-align:center;line-height:1.8;
}
.demo-login__hint strong{color:var(--d-cream);font-weight:500}

/* Focus visible — todos los controles interactivos */
.demo-pin:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-bottom-color:var(--gold)}
.demo-input:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-bottom-color:var(--gold-lt)}
.demo-pin-btn:focus-visible,
.demo-submit:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.demo-choice:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.answer-hint:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.demo-final__cta:focus-visible,
.demo-cta__btn-p:focus-visible,
.demo-cta__btn-g:focus-visible{outline:2px solid var(--gold);outline-offset:3px}


/* Answer hint button */
.answer-hint{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.5rem 1rem;background:transparent;
  border:1px solid rgba(200,168,72,.25);border-radius:var(--r2);
  font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gold);cursor:pointer;transition:all .18s;
}
.answer-hint:hover{background:rgba(200,168,72,.08);border-color:rgba(200,168,72,.5)}


/* Status bar */
.demo-status-bar{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  background:rgba(200,168,72,.04);border:1px solid rgba(200,168,72,.12);
  border-radius:var(--r2);padding:.75rem 1.25rem;margin-bottom:2rem;
}
.demo-status-bar__left{display:flex;align-items:center;gap:.75rem}
.demo-live-dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 7px var(--ok);flex-shrink:0;animation:lup-demo-pulse 2s ease-in-out infinite}
.demo-status-bar__label{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--d-muted)}
.demo-status-bar__right{display:flex;align-items:center;gap:1rem}
.demo-status-tag{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}

/* Login screen */
.demo-login{text-align:center;padding:4rem 1rem 3rem}
.demo-pin-field{
  display:flex;gap:.6rem;justify-content:center;margin-bottom:1.5rem;
}
.demo-pin-digit{
  width:52px;height:64px;background:var(--d-lift);
  border:1px solid var(--d-brd2);border-bottom:2px solid var(--gold);
  border-radius:var(--r2);display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:1.5rem;color:var(--gold);
  transition:border-color .2s;
}
.demo-pin-digit.filled{border-bottom-color:var(--ok);color:var(--ok)}
.demo-pin-note{font-size:.72rem;color:var(--d-faint);letter-spacing:.1em}

/* Progress bar */
.demo-progress{margin-bottom:2rem}
.demo-progress__bar-wrap{height:2px;background:var(--d-brd2);border-radius:1px;overflow:hidden;margin-bottom:.5rem}
.demo-progress__bar{height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-lt));border-radius:1px;transition:width .5s ease}
.demo-progress__labels{display:flex;justify-content:space-between;font-size:.72rem;color:var(--d-muted)}

/* Cards */
.demo-cards{display:flex;flex-direction:column;gap:1.25rem}

/* Card base */
.demo-card{
  background:var(--d-lift);border:1px solid var(--d-brd2);
  border-radius:var(--r3);overflow:hidden;
  transition:border-color .25s;
}
.demo-card--active{border-color:rgba(200,168,72,.35);border-top:2px solid var(--gold)}
.demo-card--solved{border-color:rgba(90,158,122,.25);opacity:.82}
/* locked: opacidad solo en body, no en el header (nombre de prueba sigue legible) */
.demo-card--locked .demo-card__body{opacity:.4}
.demo-card--locked .demo-card__head{opacity:.55}

.demo-card__head{padding:1.1rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.demo-card__num{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--d-muted)}
.demo-card__type{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--d-faint)}
.demo-card__body{padding:1.25rem 1.5rem;border-top:1px solid var(--d-brd2)}
.demo-card__question{font-family:var(--serif);font-size:clamp(1.1rem,2.5vw,1.6rem);color:var(--d-paper);line-height:1.45;font-weight:300;margin-bottom:1.5rem}
.demo-card__hint{font-size:.75rem;color:var(--d-muted);margin-bottom:1.25rem;line-height:1.65}

/* Answer hint */
.demo-answer-hint{
  background:rgba(200,168,72,.06);border:1px solid rgba(200,168,72,.15);
  border-radius:var(--r2);padding:1rem 1.25rem;margin-bottom:1.25rem;
}
.demo-answer-hint__label{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:.4rem}
.demo-answer-hint__val{font-family:var(--mono);font-size:.8rem;color:var(--d-cream)}

/* Input */
.demo-input-row{display:flex;gap:.6rem}
.demo-input{
  flex:1;height:48px;background:rgba(255,255,255,.04);
  border:1px solid var(--d-brd2);border-bottom:2px solid var(--gold);
  border-radius:var(--r2);
  padding:0 1rem;color:var(--d-paper);font-size:.9rem;
  transition:border-color .2s;
}
.demo-input:focus{border-bottom-color:var(--gold-lt);outline:none}
.demo-input--ok{border-bottom-color:var(--ok)!important}
.demo-input--err{border-bottom-color:var(--err)!important}
.demo-submit{
  height:48px;padding:0 1.5rem;background:var(--gold);color:var(--d-bg);
  border-radius:var(--r2);font-size:.7rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  transition:background .2s,transform .15s;flex-shrink:0;
}
.demo-submit:hover{background:var(--gold-lt);transform:translateY(-1px)}

/* Choices (opción múltiple) */
.demo-choices{display:flex;flex-direction:column;gap:.6rem}
.demo-choice{
  display:flex;align-items:center;gap:1rem;
  padding:.85rem 1.1rem;background:rgba(255,255,255,.03);
  border:1px solid var(--d-brd2);border-radius:var(--r2);
  cursor:pointer;transition:all .18s;text-align:left;
}
.demo-choice:hover{background:rgba(255,255,255,.06);border-color:var(--d-brd)}
.demo-choice--selected{background:rgba(200,168,72,.08);border-color:rgba(200,168,72,.3)}
.demo-choice--ok{border-color:var(--ok-brd)!important;background:var(--ok-bg)!important}
.demo-choice--err{border-color:var(--err-brd)!important;background:var(--err-bg)!important}
.demo-choice__letter{
  width:28px;height:28px;border-radius:50%;
  background:var(--d-brd2);
  display:flex;align-items:center;justify-content:center;
  font-size:.72rem;font-weight:500;color:var(--d-muted);flex-shrink:0;
  transition:background .18s,color .18s;
}
.demo-choice--selected .demo-choice__letter{background:var(--gold);color:var(--d-bg)}
.demo-choice__text{font-size:.88rem;color:var(--d-cream);line-height:1.5}

/* Cooldown */
.demo-cooldown{text-align:center;padding:1.5rem 1rem}
.demo-cooldown__timer{font-family:var(--serif);font-size:2.5rem;color:var(--gold);font-weight:300}
.demo-cooldown__label{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--d-muted);margin-top:.25rem}

/* Pista desbloqueada */
.demo-clue-reveal{
  background:rgba(200,168,72,.06);border-left:2px solid var(--gold);
  padding:1rem 1.25rem;border-radius:0 var(--r2) var(--r2) 0;margin-top:1rem;
}
.demo-clue-reveal__label{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.4rem}
.demo-clue-reveal__text{font-family:var(--serif);font-style:italic;font-size:1rem;color:var(--d-paper);line-height:1.55;font-weight:300}

/* Locked card body */
.demo-locked-body{
  height:56px;background:rgba(255,255,255,.02);
  border:1px solid var(--d-brd2);border-radius:var(--r2);
  display:flex;align-items:center;justify-content:center;margin-bottom:1rem;
}
.demo-locked-note{font-size:.72rem;color:var(--d-faint)}

/* Final reveal */
.demo-final{text-align:center;padding:4rem 1rem 5rem}
.demo-final__eyebrow{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);opacity:.9;margin-bottom:1.5rem;display:block}
.demo-final__icon{font-size:3rem;margin-bottom:1.5rem}
.demo-final__title{font-family:var(--serif);font-size:clamp(2rem,5vw,3.5rem);color:var(--d-paper);margin-bottom:2rem;font-weight:300}
.demo-final__title em{color:var(--gold);font-style:italic}
.demo-final__letter{
  background:rgba(200,168,72,.04);border:1px solid rgba(200,168,72,.14);
  border-radius:var(--r3);padding:2rem 2.5rem;max-width:520px;margin:0 auto 2.5rem;text-align:left;
}
.demo-final__text{font-family:var(--serif);font-size:.95rem;color:var(--d-cream);line-height:2;font-style:italic;white-space:pre-line}
.demo-final__from{display:block;font-size:.82rem;color:var(--gold);margin-top:1.25rem;font-family:var(--serif);font-style:italic}
.demo-final__cta{
  display:inline-flex;align-items:center;
  padding:.9rem 2.25rem;background:var(--gold);color:var(--d-bg);
  font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.08em;
  border-radius:var(--r2);text-decoration:none;transition:background .18s,transform .15s;
}
.demo-final__cta:hover{background:var(--gold-lt);transform:translateY(-2px)}
.demo-final__msg{font-size:.88rem;color:var(--d-cream);max-width:440px;margin:0 auto;line-height:1.9}


/* ══════════════════════════════════════════════════════
   DEMO EXPLAINER (post-demo recap)
══════════════════════════════════════════════════════ */
.demo-explainer{
  background:var(--d-mid);
  padding:clamp(4rem,8vw,7rem) 0;
  border-top:1px solid var(--d-brd2);
  border-bottom:1px solid var(--d-brd2);
}
.demo-explainer__wrap{max-width:900px;margin:0 auto;padding:0 clamp(1.25rem,5vw,3rem)}
.demo-explainer__eyebrow{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:1rem;opacity:.9}
.demo-explainer__title{
  font-family:var(--serif);font-size:clamp(2rem,4vw,3.5rem);
  color:var(--d-paper);font-weight:300;margin-bottom:3rem;line-height:1.1;
}
.demo-explainer__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.demo-explainer__card{padding:1.75rem;background:var(--d-lift);border:1px solid var(--d-brd2);border-radius:var(--r3)}
.demo-explainer__num{
  font-family:var(--serif);font-size:2.5rem;color:var(--gold);
  opacity:.3;line-height:1;display:block;margin-bottom:1rem;font-weight:300;
}
.demo-explainer__card h3{font-family:var(--serif);font-size:1.1rem;color:var(--d-paper);font-weight:400;margin-bottom:.75rem}
.demo-explainer__card p{font-size:.85rem;color:var(--d-cream);line-height:1.8}
@media(max-width:680px){.demo-explainer__grid{grid-template-columns:1fr}}

/* ══════════════════════════════════════════════════════
   DEMO VIEWER — SHELL
══════════════════════════════════════════════════════ */
.viewer-shell{
  background:var(--d-mid);
  border-top:1px solid var(--d-brd2);
  padding:clamp(3rem,6vw,6rem) 0;
}

/* Top bar */
.viewer-topbar{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;
  padding:1rem 1.5rem;background:var(--d-lift);
  border:1px solid var(--d-brd2);border-radius:var(--r2);margin-bottom:2rem;
}
.viewer-topbar__left{display:flex;align-items:center;gap:.75rem}
.viewer-live-dot{
  width:8px;height:8px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 8px var(--ok);flex-shrink:0;
  animation:lup-demo-pulse 2s ease-in-out infinite;
}
.viewer-topbar__title{font-size:.75rem;color:var(--d-cream);font-weight:400}
.viewer-topbar__right{display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap}
.viewer-topbar__stat{display:flex;flex-direction:column;align-items:flex-end;gap:.1rem}
.viewer-topbar__stat-val{font-family:var(--serif);font-size:1.8rem;color:var(--gold);line-height:1;font-weight:300}
.viewer-topbar__stat-lbl{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--d-muted)}
.viewer-topbar__div{width:1px;height:40px;background:var(--d-brd2)}

/* Progress bar */
.viewer-progress{margin-bottom:2rem}
.viewer-progress__bar-wrap{height:3px;background:var(--d-brd2);border-radius:2px;overflow:hidden;margin-bottom:.6rem}
.viewer-progress__bar{height:100%;background:var(--gold);border-radius:2px;width:50%;transition:width .5s ease}
.viewer-progress__labels{display:flex;justify-content:space-between;font-size:.72rem;color:var(--d-muted)}

/* Cards grid */
.viewer-cards{display:flex;flex-direction:column;gap:.75rem}

/* Single viewer card */
.vcard{
  background:var(--d-lift);border:1px solid var(--d-brd2);
  border-radius:var(--r2);overflow:hidden;
  cursor:pointer;transition:border-color .2s,background .15s;
}
.vcard:hover{background:rgba(255,255,255,.03);border-color:var(--d-brd)}
.vcard--solved{border-color:var(--ok-brd);border-left:2px solid var(--ok);opacity:.8}
.vcard--active{border-color:rgba(200,168,72,.35);border-left:2px solid var(--gold)}
.vcard--bad{border-color:var(--err-brd);border-left:2px solid var(--err)}
.vcard--locked{cursor:default}
.vcard--locked .vcard__head{opacity:.5}
.vcard--locked .vcard__body{opacity:.4}
.vcard--locked:hover{background:var(--d-lift);border-color:var(--d-brd2)}

.vcard__head{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem}
.vcard__left{display:flex;align-items:center;gap:.75rem;flex:1;min-width:0}
.vcard__num{font-size:.72rem;font-weight:500;letter-spacing:.14em;color:var(--d-muted);flex-shrink:0}
.vcard__name{font-family:var(--serif);font-size:1rem;color:var(--d-paper);font-weight:400;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vcard--solved .vcard__name{color:rgba(90,158,122,.8)}
.vcard--active .vcard__name{color:rgba(200,168,72,.9)}
.vcard__right{display:flex;align-items:center;gap:.75rem;flex-shrink:0}
.vcard__attempts{font-size:.7rem;color:var(--d-muted)}
.vcard__attempts b{color:var(--d-cream)}

/* Status pills */
.vpill{font-size:.72rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;padding:.2rem .65rem;border:1px solid;border-radius:var(--r)}
.vpill--ok{color:var(--ok);border-color:var(--ok-brd);background:var(--ok-bg)}
.vpill--active{color:var(--gold);border-color:rgba(200,168,72,.3);background:rgba(200,168,72,.06)}
.vpill--bad{color:var(--err);border-color:var(--err-brd);background:var(--err-bg)}
.vpill--locked{color:var(--d-muted);border-color:var(--d-brd2)}

/* Card body (expandable) */
.vcard__body{display:none;padding:0 1.25rem 1rem;border-top:1px solid var(--d-brd2)}
.vcard__body.open{display:block}

/* Locked body */
.vcard__locked-body{
  height:44px;background:rgba(255,255,255,.02);
  border:1px solid var(--d-brd2);border-radius:var(--r2);
  display:flex;align-items:center;justify-content:center;margin:.75rem 0;
}
.vcard__locked-note{font-size:.72rem;color:var(--d-faint)}

/* Live feed */
.live-feed{
  background:var(--d-lift);border:1px solid var(--d-brd2);
  border-radius:var(--r2);padding:1.25rem;
  display:flex;flex-direction:column;gap:.6rem;
  max-height:280px;overflow-y:auto;
}
.live-event{display:flex;align-items:flex-start;gap:.75rem;font-size:.8rem}
.live-event__time{color:var(--d-faint);flex-shrink:0;font-size:.72rem;padding-top:.1rem}
.live-event__dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;margin-top:.35rem}
.live-event__dot--ok{background:var(--ok)}
.live-event__dot--err{background:var(--err)}
.live-event__dot--gold{background:var(--gold)}
.live-event__dot--muted{background:var(--d-muted)}
.live-event__text{color:var(--d-cream);line-height:1.6}
.live-event__text em{color:var(--gold);font-style:normal;font-weight:400}

/* ══════════════════════════════════════════════════════
   CLASES GENERADAS POR JS — alineadas con render()
══════════════════════════════════════════════════════ */
/* Cabecera de tarjeta */
.demo-card__title-row{display:flex;align-items:center;gap:.75rem;flex:1;min-width:0}
.demo-card__name{font-family:var(--serif);font-size:1rem;color:var(--d-paper);font-weight:400;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo-card--solved .demo-card__name{color:rgba(90,158,122,.9)}
.demo-card--active .demo-card__name{color:var(--d-paper)}

/* Pill de estado en cabecera */
.demo-card__pill{
  font-size:.72rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;
  padding:.2rem .65rem;border:1px solid;border-radius:var(--r);flex-shrink:0;
  color:var(--d-muted);border-color:var(--d-brd2);
}
.demo-card--active .demo-card__pill{color:var(--gold);border-color:rgba(200,168,72,.35);background:rgba(200,168,72,.06)}
.demo-card--solved .demo-card__pill{color:var(--ok);border-color:var(--ok-brd);background:var(--ok-bg)}

/* Prompt (alias de question) */
.demo-card__prompt{font-family:var(--serif);font-size:clamp(1.1rem,2.5vw,1.6rem);color:var(--d-paper);line-height:1.45;font-weight:300;margin-bottom:1.5rem}

/* Unlock reveal (alias de clue-reveal) */
.demo-unlock{
  background:rgba(200,168,72,.06);border-left:2px solid var(--gold);
  padding:1rem 1.25rem;border-radius:0 var(--r2) var(--r2) 0;margin-top:1rem;display:none;
}
.demo-unlock__lbl{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.4rem}
.demo-unlock__text{font-family:var(--serif);font-style:italic;font-size:1rem;color:var(--d-paper);line-height:1.55;font-weight:300}

/* Letra de opción múltiple (alias de demo-choice__letter) */
.demo-choice-ltr{
  width:28px;height:28px;border-radius:50%;
  background:var(--d-brd2);
  display:flex;align-items:center;justify-content:center;
  font-size:.72rem;font-weight:500;color:var(--d-muted);flex-shrink:0;
  transition:background .18s,color .18s;
}
.demo-choice--selected .demo-choice-ltr{background:var(--gold);color:var(--d-bg)}
.demo-choice--ok .demo-choice-ltr{background:var(--ok);color:#fff}
.demo-choice--err .demo-choice-ltr{background:var(--err);color:#fff}
@media(max-width:680px){
  .demo-edu{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .edu-strip{grid-template-columns:1fr 1fr}
  .viewer-topbar{flex-direction:column;align-items:flex-start}
  .viewer-topbar__right{gap:1rem}
  .demo-pin-field{gap:.4rem}
  .demo-pin-digit{width:44px;height:56px;font-size:1.25rem}
  .demo-input-row{flex-direction:column}
  .demo-submit{width:100%;height:48px}
  .demo-choices{gap:.5rem}
}
@media(max-width:400px){
  .edu-strip{grid-template-columns:1fr}
  .demo-edu{grid-template-columns:1fr}
}