:root {
  --oro: #d2ae62;
  --oro-claro: #f0dcaa;
  --oro-osc: #8e6c2c;
  --crema: #f3ead8;
  --tinta: #1a140f;
  --panel: rgba(22, 17, 13, 0.86);
  --panel-borde: rgba(210, 174, 98, 0.42);
  --sombra: 0 18px 50px rgba(0, 0, 0, 0.45);
  --serif-titulo: "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --serif: "EB Garamond", "Cormorant Garamond", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: #120e0b; color: var(--crema); font-family: var(--serif); }
button { font: inherit; color: inherit; cursor: pointer; }
kbd {
  display: inline-block; min-width: 1.6em; padding: 0 0.35em; margin: 0 0.1em;
  border: 1px solid var(--panel-borde); border-bottom-width: 2px; border-radius: 4px;
  font: 600 0.85em var(--serif); text-align: center; color: var(--oro-claro); background: rgba(255, 255, 255, 0.04);
}

#escena, #escena canvas { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

/* ── Portada ── */
#portada {
  position: fixed; inset: 0; z-index: 30; display: grid; place-items: center; padding: 16px;
  background: radial-gradient(ellipse at center, rgba(18, 13, 10, 0.25) 0%, rgba(18, 13, 10, 0.78) 75%);
  transition: opacity 1.4s ease, visibility 1.4s;
}
#portada.oculta { opacity: 0; visibility: hidden; pointer-events: none; }
.portada-marco {
  text-align: center; max-width: 640px; width: 100%; padding: 48px 40px 36px;
  background: linear-gradient(180deg, rgba(20, 15, 11, 0.72), rgba(20, 15, 11, 0.86));
  border: 1px solid var(--panel-borde); outline: 1px solid rgba(210, 174, 98, 0.18); outline-offset: 8px;
  box-shadow: var(--sombra); backdrop-filter: blur(3px);
}
.portada-ornamento { margin: 0 0 10px; font: 500 0.95rem var(--serif-titulo); letter-spacing: 0.35em; text-transform: uppercase; color: var(--oro); }
#titulo-museo { margin: 0; font: 500 clamp(2.4rem, 7vw, 4.4rem)/1.02 var(--serif-titulo); color: var(--oro-claro); letter-spacing: 0.02em; }
.portada-sub { margin: 10px 0 0; font: italic 400 1.35rem var(--serif-titulo); color: #d9c9a8; min-height: 1.4em; }
.filete { width: 140px; height: 1px; margin: 26px auto; background: linear-gradient(90deg, transparent, var(--oro), transparent); }
#carga { margin-bottom: 22px; }
.carga-pista { height: 2px; width: 240px; margin: 0 auto 10px; background: rgba(210, 174, 98, 0.2); overflow: hidden; }
#carga-barra { height: 100%; width: 0; background: var(--oro); transition: width 0.3s; }
#carga.lista .carga-pista { opacity: 0; transition: opacity 0.6s; }
#carga-texto { margin: 0; font-size: 0.98rem; color: #bfae8d; font-style: italic; }
.portada-nota { margin: 18px 0 0; font-size: 0.85rem; color: #9c8d72; }

.btn-principal {
  padding: 14px 42px; border: 1px solid var(--oro); background: linear-gradient(180deg, #2e2316, #1d160e);
  color: var(--oro-claro); font: 600 1.15rem var(--serif-titulo); letter-spacing: 0.18em; text-transform: uppercase;
  box-shadow: inset 0 0 0 3px rgba(20, 15, 10, 0.9), inset 0 0 0 4px rgba(210, 174, 98, 0.35);
  transition: background 0.25s, color 0.25s, transform 0.2s;
}
.btn-principal:hover:not(:disabled) { background: linear-gradient(180deg, #4a3820, #2b2013); color: #fff4d6; transform: translateY(-1px); }
.btn-principal:disabled { opacity: 0.45; cursor: progress; }
.btn-principal:focus-visible, .btn-barra:focus-visible, .btn-ficha:focus-visible { outline: 2px solid var(--oro-claro); outline-offset: 2px; }

.btn-saltar {
  position: fixed; right: 24px; bottom: 24px; z-index: 25; padding: 9px 18px;
  background: var(--panel); border: 1px solid var(--panel-borde); color: var(--oro-claro); font-size: 1rem; letter-spacing: 0.06em;
}

/* ── HUD ── */
#hud, #barra { opacity: 0; pointer-events: none; transition: opacity 0.8s; }
body.recorriendo #hud, body.recorriendo #barra { opacity: 1; pointer-events: auto; }
body.contemplando #hud { opacity: 0.25; }
#hud { position: fixed; top: 16px; left: 16px; right: 16px; z-index: 10; display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; pointer-events: none; }
#hud > * { pointer-events: auto; }
.hud-placa {
  display: flex; flex-direction: column; padding: 10px 18px 11px; background: var(--panel);
  border: 1px solid var(--panel-borde); box-shadow: var(--sombra);
}
#hud-museo { font: 600 0.78rem var(--serif-titulo); letter-spacing: 0.28em; text-transform: uppercase; color: var(--oro); }
#hud-sala { font: italic 500 1.3rem var(--serif-titulo); color: var(--crema); }

#barra {
  position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 10;
  display: flex; align-items: center; gap: 6px; padding: 6px; max-width: calc(100vw - 32px);
  background: var(--panel); border: 1px solid var(--panel-borde); box-shadow: var(--sombra);
}
body.contemplando #barra { opacity: 0; pointer-events: none; }
.btn-barra {
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 14px;
  border: 1px solid transparent; background: transparent; color: var(--crema); font-size: 1.02rem; white-space: nowrap;
}
.btn-barra:hover { border-color: var(--panel-borde); background: rgba(210, 174, 98, 0.08); color: var(--oro-claro); }
.btn-barra .ico { color: var(--oro); font-size: 1.15rem; }
.btn-icono { width: 40px; padding: 0; justify-content: center; font-size: 1.1rem; }
.musica { display: flex; align-items: center; gap: 4px; padding: 0 6px; border-left: 1px solid rgba(210, 174, 98, 0.2); border-right: 1px solid rgba(210, 174, 98, 0.2); }
#btn-musica .nota { color: var(--oro); font-size: 1.3rem; }
#btn-musica.silencio .nota { color: #6f6555; text-decoration: line-through; }
#volumen { width: 80px; accent-color: var(--oro); }
.tema { max-width: 170px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-style: italic; font-size: 0.9rem; color: #bfae8d; padding: 0 4px; }

#mira { position: fixed; left: 50%; top: 50%; width: 6px; height: 6px; margin: -3px 0 0 -3px; border-radius: 50%; background: rgba(255, 240, 210, 0.85); box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.35); z-index: 9; display: none; pointer-events: none; }
body.recorriendo[data-modo="wasd"]:not(.contemplando) #mira { display: block; }

#pista {
  position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%); z-index: 9; margin: 0; padding: 8px 16px;
  background: var(--panel); border: 1px solid var(--panel-borde); font-size: 1.05rem; pointer-events: none; white-space: nowrap; max-width: calc(100vw - 32px); overflow: hidden; text-overflow: ellipsis;
}
#pista em { color: var(--oro-claro); }
#pista .tecla { color: var(--oro); font-weight: 600; margin-right: 4px; }

#aviso {
  position: fixed; left: 50%; top: 18px; transform: translate(-50%, -20px); z-index: 20; margin: 0; padding: 10px 20px;
  background: var(--panel); border: 1px solid var(--panel-borde); box-shadow: var(--sombra); opacity: 0; pointer-events: none;
  transition: opacity 0.5s, transform 0.5s; max-width: calc(100vw - 32px); text-align: center;
}
#aviso.visible { opacity: 1; transform: translate(-50%, 0); }
@media (min-width: 900px) { #aviso { top: 86px; } }

#aviso-bloqueo {
  position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 9; padding: 14px 22px;
  background: var(--panel); border: 1px solid var(--panel-borde); box-shadow: var(--sombra); font-size: 1.05rem; max-width: calc(100vw - 32px);
}

/* ── Ficha ── */
#ficha[hidden], #aviso-bloqueo[hidden], #pista[hidden], .btn-saltar[hidden] { display: none; }
#ficha {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(420px, 38vw); z-index: 15; display: flex; flex-direction: column;
  background: linear-gradient(180deg, rgb(24, 18, 13), rgb(16, 12, 9));
  border-left: 1px solid var(--panel-borde); box-shadow: -20px 0 60px rgba(0, 0, 0, 0.4);
  animation: entra-ficha 0.6s ease both;
}
@keyframes entra-ficha { from { transform: translateX(30px); opacity: 0; } }
#ficha.plegada { width: auto; top: auto; bottom: 16px; right: 16px; border: 1px solid var(--panel-borde); }
#ficha.plegada #ficha-contenido { display: none; }
.ficha-barra, .ficha-pie { display: flex; gap: 6px; padding: 12px 14px; align-items: center; justify-content: space-between; }
.ficha-barra { border-bottom: 1px solid rgba(210, 174, 98, 0.2); }
.ficha-pie { border-top: 1px solid rgba(210, 174, 98, 0.2); }
.btn-ficha { padding: 7px 12px; border: 1px solid var(--panel-borde); background: rgba(255, 255, 255, 0.03); color: var(--crema); font-size: 0.98rem; }
.btn-ficha:hover { background: rgba(210, 174, 98, 0.14); color: var(--oro-claro); }
.btn-salir { border-color: var(--oro); color: var(--oro-claro); }
.zoom { display: flex; align-items: center; gap: 6px; }
.zoom .btn-ficha { width: 34px; padding: 4px 0; font-size: 1.15rem; }
#zoom-nivel { min-width: 52px; text-align: center; font-size: 0.9rem; color: #bfae8d; }
#ficha-contenido { flex: 1; overflow-y: auto; padding: 26px 30px 30px; scrollbar-width: thin; scrollbar-color: var(--oro-osc) transparent; }
.ficha-num { margin: 0 0 6px; font: 600 0.75rem var(--serif-titulo); letter-spacing: 0.3em; text-transform: uppercase; color: var(--oro); }
#ficha h2 { margin: 0; font: italic 500 2.1rem/1.1 var(--serif-titulo); color: var(--oro-claro); }
.ficha-autor { margin: 8px 0 18px; font-size: 1.2rem; color: #e6d8bb; }
#ficha dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 0 0 18px; padding: 14px 0; border-top: 1px solid rgba(210, 174, 98, 0.2); border-bottom: 1px solid rgba(210, 174, 98, 0.2); font-size: 0.98rem; }
#ficha dt { color: var(--oro); font-variant: small-caps; letter-spacing: 0.06em; }
#ficha dd { margin: 0; color: var(--crema); }
.precio { margin: 0 0 18px; padding: 10px 14px; border: 1px solid var(--oro-osc); background: rgba(210, 174, 98, 0.08); font-size: 1.15rem; color: var(--oro-claro); }
.precio span { font-variant: small-caps; color: var(--oro); margin-right: 8px; letter-spacing: 0.06em; }
.descripcion p { margin: 0 0 12px; font-size: 1.1rem; line-height: 1.55; color: #e9dfcb; }
.descripcion p:first-child::first-letter { float: left; font: 500 3.1rem/0.85 var(--serif-titulo); color: var(--oro); margin: 6px 8px 0 0; }
.fuente { margin-top: 18px; font-size: 0.85rem; color: #9c8d72; }
.fuente a { color: var(--oro); }

/* ── Guía ── */
#guia {
  position: fixed; top: 0; left: 0; bottom: 0; width: min(400px, 100vw); z-index: 18; display: flex; flex-direction: column;
  background: linear-gradient(180deg, rgba(24, 18, 13, 0.96), rgba(16, 12, 9, 0.98)); border-right: 1px solid var(--panel-borde);
  transform: translateX(-102%); transition: transform 0.45s ease; box-shadow: 20px 0 60px rgba(0, 0, 0, 0.4);
}
#guia.abierta { transform: none; }
.guia-cabecera { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px 6px; }
.guia-cabecera h2 { margin: 0; font: italic 500 1.7rem var(--serif-titulo); color: var(--oro-claro); }
.guia-nota { margin: 0 20px 10px; color: #bfae8d; font-size: 0.95rem; }
#guia-lista { flex: 1; overflow-y: auto; padding: 0 12px 24px; scrollbar-width: thin; scrollbar-color: var(--oro-osc) transparent; }
#guia-lista h3 { margin: 18px 8px 8px; font: 500 1.25rem var(--serif-titulo); color: var(--crema); }
#guia-lista h3 span { display: block; font-size: 0.72rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--oro); }
#guia-lista ul { list-style: none; margin: 0; padding: 0; }
#guia-lista li button { display: flex; gap: 12px; align-items: center; width: 100%; padding: 8px; border: 1px solid transparent; background: none; text-align: left; }
#guia-lista li button:hover { border-color: var(--panel-borde); background: rgba(210, 174, 98, 0.08); }
#guia-lista img { width: 54px; height: 54px; object-fit: cover; border: 2px solid var(--oro-osc); flex: none; background: #2a2119; }
#guia-lista strong { display: block; font-weight: 500; font-style: italic; font-size: 1.05rem; color: var(--crema); }
#guia-lista small { color: #bfae8d; font-size: 0.88rem; }
.vacio { padding: 20px; color: #bfae8d; }

/* ── Ayuda ── */
#ayuda { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; padding: 16px; background: rgba(10, 8, 6, 0.6); backdrop-filter: blur(2px); }
#ayuda[hidden] { display: none; }
.ayuda-caja { width: min(860px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; padding: 30px 34px; text-align: center; background: var(--panel); border: 1px solid var(--panel-borde); box-shadow: var(--sombra); }
.ayuda-caja h2 { margin: 0 0 18px; font: italic 500 2rem var(--serif-titulo); color: var(--oro-claro); }
.ayuda-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; text-align: left; }
.ayuda-cols h3 { margin: 0 0 8px; font: 600 1.15rem var(--serif-titulo); color: var(--oro); }
.ayuda-cols h3 small { font-weight: 400; color: #9c8d72; }
.ayuda-cols ul { margin: 0; padding-left: 18px; }
.ayuda-cols li { margin-bottom: 7px; line-height: 1.45; }
.creditos { margin: 20px 0 0; font-size: 0.8rem; color: #8a7c64; line-height: 1.4; }
.ayuda-atajos { margin: 18px 0 20px; color: #bfae8d; }

#fundido { position: fixed; inset: 0; z-index: 35; background: #0c0907; opacity: 0; pointer-events: none; transition: opacity 0.42s ease; }
#fundido.activo { opacity: 1; }

/* ── Táctil y móvil ── */
[hidden] { display: none !important; }
button { touch-action: manipulation; }
html, body { overscroll-behavior: none; }
#guia-lista, #ficha-contenido, .ayuda-caja { touch-action: pan-y; overscroll-behavior: contain; }
.solo-tactil, .txt-movil { display: none; }
body.tactil .solo-tactil { display: grid; }
body.tactil .solo-teclado, body.tactil #btn-modo, body.tactil #btn-siguiente-tema, body.tactil #volumen, body.tactil .tema { display: none; }
.btn-saltar { right: calc(24px + env(safe-area-inset-right)); bottom: calc(24px + env(safe-area-inset-bottom)); }

/* teléfono en vertical */
@media (max-width: 760px) {
  .portada-marco { padding: 34px 20px 26px; }
  .btn-principal { padding: 13px 26px; letter-spacing: 0.12em; }
  #hud { top: calc(10px + env(safe-area-inset-top)); left: calc(10px + env(safe-area-inset-left)); right: calc(10px + env(safe-area-inset-right)); }
  .hud-placa { padding: 7px 12px; }
  #hud-sala { font-size: 1.05rem; }
  #hud-museo { display: none; }
  #aviso { top: calc(62px + env(safe-area-inset-top)); font-size: 0.95rem; }
  /* en pantallas angostas la barra queda en cuatro botones, aunque el navegador no se declare táctil */
  #btn-modo, #volumen, .tema, #btn-siguiente-tema { display: none; }
  /* barra: iconos con su nombre debajo, botones de 52 px */
  #barra { bottom: calc(10px + env(safe-area-inset-bottom)); gap: 0; padding: 4px; max-width: calc(100vw - 20px); }
  .btn-barra, .btn-icono { flex: 1 1 0; flex-direction: column; justify-content: center; gap: 1px; width: auto; min-width: 58px; height: 52px; padding: 2px 6px; }
  .btn-barra .txt, .txt-movil { display: block; font-size: 0.72rem; letter-spacing: 0.04em; color: #d9c9a8; }
  .btn-barra .ico, .ico-pl, #btn-musica .nota { font-size: 1.2rem; line-height: 1; }
  .musica { padding: 0; border: 0; }
  #btn-musica.silencio .nota { text-decoration: none; opacity: 0.45; }
  /* ficha: hoja inferior, resumida por defecto para que la obra se vea grande */
  #ficha { top: auto; left: 0; width: 100%; max-height: 64vh; border-left: 0; border-top: 1px solid var(--panel-borde); padding-bottom: env(safe-area-inset-bottom); animation-name: sube-ficha; }
  @keyframes sube-ficha { from { transform: translateY(30px); opacity: 0; } }
  /* cerrada muestra solo la cabecera ‹ título ›; tocándola se despliega la ficha */
  #ficha:not(.expandida) #ficha-contenido { display: none; }
  .precio { margin-bottom: 12px; }
  #ficha-contenido { padding: 10px 16px 16px; }
  .ayuda-cols { grid-template-columns: 1fr; }
  .ayuda-caja { padding: 22px 18px; }
  #pista { bottom: 74px; font-size: 0.95rem; }
}

/* ficha de teléfono (vertical u horizontal): cabecera ‹ título ›, ✕ flotante, sin botonera duplicada */
.ficha-movil, .cerrar-obra { display: none; }
@media (max-width: 760px), (max-height: 500px) {
  .ficha-movil { display: block; padding: 0 8px 10px; border-bottom: 1px solid rgba(210, 174, 98, 0.2); }
  .ficha-barra, .ficha-pie { display: none; }
  #ficha-contenido > .ficha-num, #ficha-contenido > h2, #ficha-contenido > .ficha-autor { display: none; }
  .manija { display: block; position: relative; width: 100%; height: 20px; border: 0; background: none; }
  .manija::before { content: ''; position: absolute; left: 50%; top: 7px; width: 44px; height: 4px; margin-left: -22px; border-radius: 2px; background: rgba(210, 174, 98, 0.55); }
  .ficha-movil-fila { display: flex; align-items: center; gap: 8px; }
  .m-nav {
    flex: none; display: flex; align-items: center; justify-content: center; width: 46px; height: 46px; padding: 0 0 4px;
    border: 1px solid var(--panel-borde); border-radius: 50%; background: rgba(255, 255, 255, 0.03);
    color: var(--oro-claro); font: 400 2rem/1 var(--serif-titulo);
  }
  .m-nav:active { background: rgba(210, 174, 98, 0.2); }
  .m-titulo { flex: 1; min-width: 0; padding: 2px 4px; border: 0; background: none; text-align: center; }
  .m-nombre { display: block; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font: italic 500 1.35rem/1.2 var(--serif-titulo); color: var(--oro-claro); }
  .m-autor { display: block; overflow: hidden; margin-top: 2px; white-space: nowrap; text-overflow: ellipsis; font-size: 0.95rem; color: #d9c9a8; }
  .m-titulo::after { content: '▴'; display: block; margin-top: 2px; font-size: 0.8rem; line-height: 1; color: var(--oro); }
  #ficha.expandida .m-titulo::after { content: '▾'; }
  .cerrar-obra {
    position: fixed; z-index: 16; top: calc(12px + env(safe-area-inset-top)); left: calc(12px + env(safe-area-inset-left));
    align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--panel-borde); border-radius: 50%;
    background: rgba(22, 17, 13, 0.78); color: var(--oro-claro); font-size: 1.25rem; box-shadow: var(--sombra);
  }
  body.contemplando .cerrar-obra { display: flex; }
  body.contemplando #hud { opacity: 0; pointer-events: none; }
}

/* teléfono en horizontal: poca altura */
@media (max-height: 500px) {
  .portada-marco { padding: 16px 24px 14px; outline-offset: 4px; }
  .portada-ornamento { margin-bottom: 2px; font-size: 0.78rem; }
  #titulo-museo { font-size: 2.1rem; }
  .portada-sub { margin-top: 2px; font-size: 1.05rem; }
  .filete { margin: 10px auto; }
  #carga { margin-bottom: 10px; }
  .btn-principal { padding: 10px 28px; font-size: 1rem; }
  .portada-nota { display: none; }
  #hud { top: calc(8px + env(safe-area-inset-top)); left: calc(8px + env(safe-area-inset-left)); }
  #hud-museo { display: none; }
  .hud-placa { padding: 6px 12px; }
  #hud-sala { font-size: 1.05rem; }
  #barra { bottom: calc(6px + env(safe-area-inset-bottom)); padding: 4px; }
  .btn-barra { height: 40px; }
  #volumen, .tema, #btn-siguiente-tema { display: none; }
  /* en horizontal sobra ancho: nombre al lado del icono */
  .txt-movil { display: inline; margin-left: 6px; font-size: 0.92rem; }
  .btn-icono { width: auto; padding: 0 12px; }
  #ficha { width: min(360px, 44vw); padding-right: env(safe-area-inset-right); }
  /* en horizontal la ficha es lateral: siempre desplegada, sin manija */
  .manija, .m-titulo::after { display: none; }
  .ficha-movil { padding-top: 10px; }
  #ficha h2 { font-size: 1.45rem; }
  .ficha-autor { margin: 4px 0 10px; font-size: 1.05rem; }
  #ficha-contenido { padding: 12px 18px; }
  #ficha dl { padding: 8px 0; margin-bottom: 10px; font-size: 0.92rem; }
  .descripcion p { font-size: 1rem; }
  .ficha-barra, .ficha-pie { padding: 6px 10px; }
  .btn-ficha { padding: 5px 10px; font-size: 0.92rem; }
  .ayuda-caja { padding: 14px 20px; }
  .ayuda-caja h2 { margin-bottom: 8px; font-size: 1.45rem; }
  .ayuda-cols li { margin-bottom: 4px; font-size: 0.95rem; }
  .ayuda-atajos { margin: 10px 0; }
  .creditos { display: none; }
  #pista { bottom: 60px; }
}