:root{
  --bg:#1d1d1d; --bg2:#252525;
  --line:#393939; --ink:#f1f1f1; --dim:#969696; --dimmer:#696969;
  --p1:#f5ae0e;   /* acento Parte 1 (naranja) */
  --p2:#ff6b6b;   /* acento Parte 2 (rojo)    */
  --sans:'Helvetica Neue',Helvetica,Arial,sans-serif;
  --mono:'SF Mono',Menlo,Consolas,'Roboto Mono',monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);overflow:hidden;
}

/* ---- Escenario / iframe de cada parte ---- */
#frame{
  position:fixed;inset:0;width:100%;height:100%;
  border:0;background:var(--bg);display:none;z-index:10;
}
#frame.active{display:block}

/* ---- Portada combinada ---- */
#cover{
  position:fixed;inset:0;z-index:20;
  display:flex;align-items:center;justify-content:center;text-align:center;
  background:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.030) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.030) 1px,transparent 1px);
  background-size:64px 64px;
}
body.playing #cover{display:none}

.cover-inner{padding:0 6vw;max-width:1100px}
.cover-title{
  margin:0;font-size:clamp(40px,6vw,100px);line-height:1.04;
  font-weight:700;letter-spacing:-.02em;
}
.cover-title .hi{color:var(--p1)}   /* Autocustodia en naranja */

.cover-hint{
  margin:3.6vh 0 0;color:var(--dim);font-size:clamp(13px,1.2vw,18px);letter-spacing:.01em;line-height:1.95;
}
.cover-hint-sub{color:var(--dimmer);font-size:.92em}
/* hipervínculos 1 / 2 dentro del (1 → 2) */
.cover-hint .hl{
  color:var(--p1);font-weight:700;cursor:pointer;text-decoration:none;
  border-bottom:1px solid rgba(245,174,14,.5);padding-bottom:1px;
  transition:color .18s,border-color .18s;
}
.cover-hint .hl:hover{color:#ffd37a;border-color:var(--p1)}

.cover-logo{
  position:fixed;left:50%;bottom:74px;transform:translateX(-50%);
  font-weight:700;font-size:clamp(15px,1.5vw,24px);letter-spacing:.10em;color:#fff;
}
.cover-warn{
  position:fixed;left:50%;bottom:44px;transform:translateX(-50%);
  font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:#5b5b5b;
}
.k{
  display:inline-block;font-family:var(--mono);font-size:.86em;
  padding:.12em .5em;border:1px solid var(--line);border-bottom-width:2px;border-radius:7px;
  color:var(--ink);background:rgba(255,255,255,.04);margin:0 .1em;
}

/* ---- Menú persistente (arriba-izquierda) ---- */
#menu{
  position:fixed;top:20px;left:26px;z-index:60;
  display:flex;flex-direction:column;gap:2px;align-items:flex-start;
}
.menu-brand{
  background:none;border:0;cursor:pointer;padding:2px 0;margin-bottom:6px;
  font-family:var(--sans);font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--dim);transition:color .2s;
}
.menu-brand:hover{color:var(--ink)}
.menu-item{
  background:none;border:0;cursor:pointer;padding:3px 0;
  display:flex;align-items:baseline;gap:.5em;text-align:left;
  font-family:var(--sans);color:var(--dimmer);
  transition:color .2s,opacity .2s;opacity:.72;
}
.menu-item:hover{opacity:1}
.menu-item .mi-n{font-size:12px;font-weight:700;letter-spacing:.02em;color:var(--p1)}  /* naranja por defecto */
.menu-item .mi-t{font-size:12.5px;color:var(--dim)}
body.in-p2 .menu-item .mi-n{color:var(--p2)}   /* rojo SOLO dentro de la Parte 2 (los dos ítems) */
.menu-item.on{opacity:1}
.menu-item.on .mi-t{color:var(--ink)}
/* punto de la izquierda: hueco reservado siempre, coloreado solo en el activo */
.menu-item::before{
  content:'';display:inline-block;width:6px;height:6px;border-radius:50%;
  margin-right:.1em;position:relative;top:-1px;background:transparent;
}
.menu-item.on::before{background:var(--p1)}
body.in-p2 .menu-item.on::before{background:var(--p2)}

/* ocultar el menú en modo grabación (tecla H reenviada) */
body.clean #menu{opacity:0;pointer-events:none;transition:opacity .3s}

/* ---- Aviso de encadenado automático ---- */
#chain-hint{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(12px);
  z-index:70;display:flex;flex-direction:column;align-items:center;gap:5px;
  padding:12px 22px;border-radius:14px;
  background:rgba(37,37,37,.92);border:1px solid var(--line);
  box-shadow:0 10px 40px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;transition:opacity .35s,transform .35s;
}
#chain-hint.on{opacity:1;transform:translateX(-50%) translateY(0)}
#chain-hint .ch-txt{font-size:clamp(14px,1.3vw,19px);color:var(--ink)}
#chain-hint .ch-txt b{color:var(--p2)}
#chain-hint #ch-n{color:var(--ink);font-family:var(--mono)}
#chain-hint .ch-keys{font-size:11.5px;color:var(--dim);letter-spacing:.02em}