/* ============================================================
   GALERIA VIRTUAL — interfaz sobre el lienzo 3D
   Paleta tomada del sitio de Luis Diego Ramos:
   crema #f4f1ec · tinta #25221f · acento #f04c4b · Poppins
   Reparto 60-30-10 (Practical UI): la escena da el 60 de crema,
   los paneles el 30 de neutro, el rojo se usa solo para marcar
   el punto activo y el subrayado del titulo.
   ============================================================ */

:root{
  --crema:#f4f1ec;
  --tinta:#25221f;
  --tinta-media:#5d5850;
  --tinta-suave:#8a847a;
  --acento:#f04c4b;
  --panel:rgba(250,249,246,.94);
  --borde:rgba(37,34,31,.14);
  --sombra:0 4px 6px -1px rgba(0,0,0,.10), 0 2px 4px -1px rgba(0,0,0,.06);
  --sombra-alta:0 20px 25px -5px rgba(0,0,0,.16), 0 10px 10px -5px rgba(0,0,0,.06);
  --paso:.42s cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;background:#141210}
body{
  font-family:Poppins,'Segoe UI',system-ui,sans-serif;
  color:var(--tinta);
  -webkit-font-smoothing:antialiased;
}
#lienzo{position:fixed;inset:0;touch-action:none}
#lienzo canvas{display:block}

/* ---------- barra superior ---------- */
.barra{
  position:fixed;top:0;left:0;right:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:16px 24px;
  pointer-events:none;
}
.barra > *{pointer-events:auto}

.marca{
  display:flex;flex-direction:column;gap:2px;
  padding:10px 16px;border-radius:4px;
  background:var(--panel);box-shadow:var(--sombra);
  backdrop-filter:blur(8px);
}
.marca b{font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase}
.marca span{font-size:11px;font-weight:300;color:var(--tinta-media);letter-spacing:.08em}

.acciones{display:flex;gap:8px}
.btn{
  font:inherit;font-size:12px;font-weight:500;letter-spacing:.06em;
  padding:11px 18px;min-height:44px;           /* Ley de Fitts: objetivo tactil comodo */
  border:1px solid var(--borde);border-radius:4px;
  background:var(--panel);color:var(--tinta);
  box-shadow:var(--sombra);backdrop-filter:blur(8px);
  cursor:pointer;transition:background var(--paso),transform var(--paso);
}
.btn:hover{background:#fff;transform:translateY(-1px)}
.btn[hidden]{display:none}
/* la salida lleva la flecha de retorno delante: signifier explicito */
.btn-salir::before{content:'\2190';margin-right:8px;font-size:14px;line-height:1}
.btn:focus-visible{outline:2px solid var(--acento);outline-offset:2px}

/* ---------- pie: posicion + credito ---------- */
.pie{
  position:fixed;bottom:0;left:0;right:0;z-index:20;
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;padding:20px 24px;pointer-events:none;
}
.pie > *{pointer-events:auto}

.posicion{
  display:flex;align-items:center;gap:14px;
  padding:11px 18px;border-radius:4px;
  background:var(--panel);box-shadow:var(--sombra);backdrop-filter:blur(8px);
  font-size:12px;font-weight:400;color:var(--tinta-media);letter-spacing:.04em;
}
#puntos-mapa{display:flex;gap:6px}
#puntos-mapa i{
  width:7px;height:7px;border-radius:50%;
  background:rgba(37,34,31,.22);transition:background var(--paso),transform var(--paso);
}
#puntos-mapa i.on{background:var(--acento);transform:scale(1.35)}

/* credito PROVENTUO */
.credito{
  display:flex;align-items:center;gap:10px;
  padding:9px 16px 9px 12px;border-radius:4px;
  background:var(--panel);box-shadow:var(--sombra);backdrop-filter:blur(8px);
  text-decoration:none;color:var(--tinta-media);
  font-size:11px;font-weight:300;letter-spacing:.05em;
  transition:background var(--paso),transform var(--paso);
}
.credito:hover{background:#fff;transform:translateY(-1px);color:var(--tinta)}
.credito:focus-visible{outline:2px solid var(--acento);outline-offset:2px}
.credito img{height:22px;width:auto;display:block}
.credito b{font-weight:600;letter-spacing:.1em;color:var(--tinta)}

/* ---------- aviso de sala ---------- */
#aviso{
  position:fixed;left:50%;bottom:96px;z-index:22;
  transform:translate(-50%,14px);opacity:0;pointer-events:none;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:16px 32px;border-radius:4px;
  background:var(--panel);box-shadow:var(--sombra-alta);backdrop-filter:blur(10px);
  transition:opacity var(--paso),transform var(--paso);
}
#aviso.visible{opacity:1;transform:translate(-50%,0)}
#aviso strong{font-size:17px;font-weight:600;letter-spacing:.05em}
#aviso span{font-size:12px;font-weight:300;color:var(--tinta-suave)}
#aviso em{
  margin-top:7px;padding-top:8px;border-top:1px solid var(--borde);
  font-style:normal;font-size:11px;font-weight:400;letter-spacing:.06em;
  color:var(--tinta-media);
}

/* ---------- ayuda ---------- */
#ayuda{
  position:fixed;left:24px;bottom:96px;z-index:23;max-width:330px;
  opacity:0;transform:translateY(10px);pointer-events:none;
  padding:22px 26px;border-radius:4px;
  background:var(--panel);box-shadow:var(--sombra-alta);backdrop-filter:blur(10px);
  transition:opacity var(--paso),transform var(--paso);
}
#ayuda.visible{opacity:1;transform:translateY(0);pointer-events:auto}
#ayuda h2{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
#ayuda dl{display:grid;grid-template-columns:auto 1fr;gap:11px 14px;align-items:center}
#ayuda dt{display:flex;gap:4px}
#ayuda dd{font-size:13px;font-weight:300;color:var(--tinta-media);line-height:1.45}
kbd{
  display:grid;place-items:center;min-width:26px;height:26px;padding:0 6px;
  font:500 12px/1 Poppins,system-ui,sans-serif;
  color:var(--tinta);background:#fff;
  border:1px solid var(--borde);border-bottom-width:2px;border-radius:4px;
}
#ayuda-cerrar{margin-top:18px;width:100%}

/* ---------- portada ---------- */
#portada{
  position:fixed;inset:0;z-index:40;
  display:grid;place-items:center;
  background:#141210;
  transition:opacity .7s ease,visibility .7s;
}
#portada:not(.visible){opacity:0;visibility:hidden;pointer-events:none}
.portada-caja{text-align:center;padding:0 24px;max-width:560px}
.portada-caja .demo{
  display:inline-block;margin-bottom:26px;padding:6px 14px;border-radius:3px;
  font-size:10px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;
  color:#c9c2b7;border:1px solid rgba(244,241,236,.24);
}
.portada-caja h1{
  font-size:clamp(38px,7vw,68px);font-weight:700;letter-spacing:-.01em;
  color:var(--crema);line-height:1.06;
}
.portada-caja h1 + hr{
  width:64px;height:2px;border:0;background:var(--acento);
  margin:22px auto 20px;
}
.portada-caja .autor{
  font-size:clamp(15px,2vw,19px);font-weight:300;letter-spacing:.22em;
  text-transform:uppercase;color:#b8b0a4;
}
.portada-caja .tecnica{
  margin-top:12px;font-size:13px;font-weight:300;color:#8d867b;letter-spacing:.05em;
}
#btn-entrar{
  margin-top:40px;padding:16px 44px;min-height:52px;
  font-size:13px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;
  color:#1b1917;background:var(--crema);border:0;border-radius:4px;
  cursor:pointer;transition:transform var(--paso),background var(--paso);
}
#btn-entrar:hover{transform:translateY(-2px);background:#fff}
#btn-entrar:focus-visible{outline:2px solid var(--acento);outline-offset:3px}
#btn-entrar[disabled]{opacity:.35;cursor:progress}

#cargando{margin-top:40px;display:flex;flex-direction:column;align-items:center;gap:14px}
#cargando.listo{display:none}
#cargando-texto{font-size:12px;font-weight:300;letter-spacing:.1em;color:#8d867b}
.giro{
  width:26px;height:26px;border-radius:50%;
  border:2px solid rgba(244,241,236,.18);border-top-color:var(--acento);
  animation:girar 1s linear infinite;
}
#cargando:not(.listo) ~ #btn-entrar{display:none}
@keyframes girar{to{transform:rotate(360deg)}}

/* ---------- movil ---------- */
@media (max-width:720px){
  .barra{padding:12px 14px;gap:10px}
  .pie{padding:14px;flex-direction:column;align-items:stretch;gap:10px}
  .marca span{display:none}
  #ayuda{left:14px;right:14px;max-width:none;bottom:150px}
  #aviso{bottom:150px}
  .credito{justify-content:center}
  .posicion{justify-content:center}
}

/* ---------- respeta la preferencia de menos movimiento ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}


/* ============================================================
   CEDULA DE OBRA
   Formato de cartela de museo: autor, titulo, año, ficha tecnica.
   El texto es de demostracion y lo declara arriba, para que nadie
   lo confunda con el catalogo real de la obra.
   ============================================================ */
#cedula{
  position:fixed;inset:0;z-index:60;
  display:grid;place-items:center;padding:24px;
  background:rgba(20,18,16,.72);backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s;
}
#cedula.visible{opacity:1;visibility:visible}

#cedula > .cedula-obra,
#cedula > .cedula-ficha{
  background:#faf9f6;
  transform:translateY(8px);transition:transform var(--paso);
}
#cedula.visible > .cedula-obra,
#cedula.visible > .cedula-ficha{transform:translateY(0)}

#cedula{grid-template-columns:minmax(0,1fr);align-content:center}
@media (min-width:860px){
  #cedula{
    grid-template-columns:minmax(0,auto) minmax(300px,360px);
    grid-auto-rows:auto;justify-content:center;align-content:center;
    align-items:stretch;gap:0;      /* imagen y ficha comparten altura */
  }
}

.cedula-obra{
  margin:0;display:grid;place-items:center;padding:26px;
  box-shadow:var(--sombra-alta);
}
.cedula-obra img{
  display:block;max-width:100%;max-height:min(62vh,560px);width:auto;height:auto;
  box-shadow:0 2px 10px rgba(0,0,0,.22);
}

.cedula-ficha{
  padding:30px 32px;box-shadow:var(--sombra-alta);
  border-left:1px solid var(--borde);
  display:flex;flex-direction:column;
}
.cedula-demo{
  align-self:flex-start;margin-bottom:20px;padding:5px 11px;border-radius:3px;
  font-size:9px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:#7a736a;background:#efece5;border:1px solid var(--borde);
}
.cedula-autor{
  font-size:11px;font-weight:500;letter-spacing:.19em;text-transform:uppercase;
  color:var(--tinta-media);
}
.cedula-titulo{
  margin-top:9px;font-size:27px;font-weight:600;letter-spacing:-.01em;
  line-height:1.16;color:var(--tinta);
}
.cedula-anio{margin-top:4px;font-size:14px;font-weight:300;color:var(--tinta-suave)}
.cedula-ficha dl{
  margin-top:26px;padding-top:20px;border-top:1px solid var(--borde);
  display:grid;grid-template-columns:auto 1fr;gap:11px 20px;
}
.cedula-ficha dt{
  font-size:10px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--tinta-suave);white-space:nowrap;padding-top:2px;
}
.cedula-ficha dd{font-size:13px;font-weight:300;line-height:1.45;color:var(--tinta)}

.cedula-cerrar{
  position:fixed;top:20px;right:24px;z-index:2;
  width:44px;height:44px;                    /* Ley de Fitts: objetivo comodo */
  font:300 26px/1 Poppins,system-ui,sans-serif;color:var(--tinta);
  background:var(--panel);border:1px solid var(--borde);border-radius:4px;
  cursor:pointer;transition:background var(--paso),transform var(--paso);
}
.cedula-cerrar:hover{background:#fff;transform:translateY(-1px)}
.cedula-cerrar:focus-visible{outline:2px solid var(--acento);outline-offset:2px}

@media (max-width:859px){
  .cedula-obra{padding:16px}
  .cedula-obra img{max-height:38vh}
  .cedula-ficha{border-left:0;border-top:1px solid var(--borde);padding:24px}
  .cedula-titulo{font-size:23px}
}


/* CTA de disponibilidad en la cedula: boton sobrio, un solo acento */
.cedula-cta{
  margin-top:24px;align-self:flex-start;
  display:inline-block;padding:12px 22px;min-height:44px;
  font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;
  color:#faf9f6;background:var(--tinta);border-radius:4px;
  text-decoration:none;transition:background var(--paso),transform var(--paso);
}
.cedula-cta:hover{background:#000;transform:translateY(-1px)}
.cedula-cta:focus-visible{outline:2px solid var(--acento);outline-offset:2px}


/* susurro al toparse con una banca: mismo tono tipografico del credito */
#aviso-banca{
  position:fixed;left:50%;top:56%;transform:translate(-50%,0);
  font-size:12px;font-weight:400;letter-spacing:.08em;
  color:#5d5850;background:rgba(250,249,246,.82);
  padding:9px 18px;border-radius:999px;
  opacity:0;transition:opacity .45s ease;pointer-events:none;z-index:40;
  backdrop-filter:blur(4px);
}
#aviso-banca.visible{opacity:1}


/* QR de realidad aumentada en la cedula */
.cedula-ar{
  margin-top:18px;display:flex;align-items:center;gap:14px;
  text-decoration:none;color:#877f74;max-width:340px;
}
.cedula-ar img{border:1px solid #e5e0d8;border-radius:6px;background:#fff;flex:none}
.cedula-ar span{font-size:11.5px;line-height:1.5;letter-spacing:.02em}
.cedula-ar:hover span{color:var(--tinta)}