:root {
  --tinta: #f4ead8;
  --tinta-suave: rgba(244, 234, 216, .72);
  --oro: #e8b866;
  --oro-fuerte: #f2c777;
  --panel: rgba(20, 18, 22, .52);
  --panel-borde: rgba(255, 236, 200, .14);
  --sombra: 0 10px 40px rgba(0, 0, 0, .35);
  --radio: 14px;
  --serif: "Cinzel", "Trajan Pro", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
html { scroll-behavior: auto; }
body {
  background: #1b1a1f;
  color: var(--tinta);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Lienzo ---------- */
#escena { position: fixed; inset: 0; z-index: 0; }
#escena canvas { display: block; width: 100%; height: 100%; touch-action: none; outline: none; }
.modo-recorrido #escena canvas { touch-action: pan-y; }

/* ---------- Carga ---------- */
#cargando {
  position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: radial-gradient(ellipse at 50% 60%, #3a3036 0%, #16151a 70%);
  transition: opacity .9s ease, visibility .9s;
}
#cargando.oculto { opacity: 0; visibility: hidden; }
.carga-caja { text-align: center; font-family: var(--serif); letter-spacing: .12em; color: var(--tinta-suave); }
.carga-torre { display: flex; gap: 6px; justify-content: center; margin-bottom: 18px; }
.carga-torre span { width: 14px; height: 28px; background: var(--oro); border-radius: 2px; animation: almena 1.1s ease-in-out infinite; }
.carga-torre span:nth-child(2) { animation-delay: .15s; }
.carga-torre span:nth-child(3) { animation-delay: .3s; }
@keyframes almena { 0%, 100% { transform: translateY(0); opacity: .5; } 50% { transform: translateY(-10px); opacity: 1; } }

/* ---------- Barra superior ---------- */
.barra {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: max(14px, env(safe-area-inset-top)) 22px 14px;
  pointer-events: none;
}
.barra > * { pointer-events: auto; }
.marca {
  font-family: var(--serif); font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  font-size: 14px; color: var(--tinta); text-decoration: none; text-shadow: 0 2px 10px rgba(0,0,0,.5);
  display: inline-flex; align-items: center; gap: 8px; white-space: nowrap;
}
.marca-ico { color: var(--oro); font-size: 20px; }
.modos, .opciones {
  display: flex; gap: 4px; padding: 4px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--panel-borde);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--sombra);
}
.modos button, .chip {
  appearance: none; border: 0; cursor: pointer; font: 500 13px/1 var(--sans);
  color: var(--tinta-suave); background: transparent; padding: 9px 14px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 6px; transition: background .25s, color .25s;
}
.modos button:hover, .chip:hover { color: var(--tinta); background: rgba(255,255,255,.07); }
.modos button.activo { background: var(--oro); color: #241b0e; }
.chip[aria-pressed="true"] { color: var(--oro-fuerte); background: rgba(232,184,102,.14); }
.chip .ico { font-size: 14px; }
.chip.mando { cursor: default; color: var(--oro-fuerte); }
button:focus-visible { outline: 2px solid var(--oro); outline-offset: 2px; }

/* ---------- Progreso ---------- */
.progreso {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 15;
  width: 3px; height: 160px; border-radius: 3px; background: rgba(255,255,255,.18); overflow: hidden;
  transition: opacity .4s;
}
.progreso span { display: block; width: 100%; height: 0; background: var(--oro); border-radius: 3px; }

/* ---------- Recorrido ---------- */
#recorrido { position: relative; z-index: 10; pointer-events: none; }
.paso {
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center; padding: 120px 6vw 80px;
}
.paso:nth-child(even) { justify-content: flex-end; }
.tarjeta {
  pointer-events: auto; max-width: 420px;
  padding: 26px 28px; border-radius: var(--radio);
  background: var(--panel); border: 1px solid var(--panel-borde);
  backdrop-filter: blur(12px) saturate(1.1); -webkit-backdrop-filter: blur(12px) saturate(1.1);
  box-shadow: var(--sombra);
  opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease;
}
.paso.visible .tarjeta { opacity: 1; transform: none; }
.paso-hero .tarjeta { max-width: 520px; background: linear-gradient(160deg, rgba(20,18,22,.6), rgba(20,18,22,.28)); }
.antetitulo {
  margin: 0 0 10px; font-size: 11px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--oro);
}
h1, h2 { font-family: var(--serif); font-weight: 700; margin: 0 0 14px; line-height: 1.08; letter-spacing: .02em; }
h1 { font-size: clamp(34px, 5.4vw, 62px); text-shadow: 0 4px 30px rgba(0,0,0,.35); }
h2 { font-size: clamp(24px, 3vw, 34px); }
.tarjeta p { margin: 0 0 12px; font-size: 15px; line-height: 1.6; color: var(--tinta-suave); }
.tarjeta p:last-child { margin-bottom: 0; }
.pista { display: flex; align-items: center; gap: 10px; margin-top: 18px !important; font-size: 13px !important; }
.raton { width: 18px; height: 28px; border: 2px solid var(--tinta-suave); border-radius: 10px; position: relative; flex: none; }
.raton::after { content: ""; position: absolute; left: 50%; top: 5px; width: 3px; height: 6px; margin-left: -1.5px; border-radius: 2px; background: var(--oro); animation: rueda 1.6s ease-in-out infinite; }
@keyframes rueda { 0% { transform: translateY(0); opacity: 1; } 80% { transform: translateY(8px); opacity: 0; } 100% { opacity: 0; } }
.boton {
  appearance: none; border: 0; cursor: pointer; margin-top: 8px;
  font: 600 14px/1 var(--sans); letter-spacing: .03em;
  color: #241b0e; background: var(--oro); padding: 14px 20px; border-radius: 999px;
  box-shadow: 0 6px 24px rgba(232,184,102,.35); transition: transform .2s, background .2s;
}
.boton:hover { background: var(--oro-fuerte); transform: translateY(-2px); }

/* ---------- Modo explorar ---------- */
.modo-explorar { overflow: hidden; height: 100%; }
.modo-explorar #recorrido, .modo-explorar .progreso { display: none; }
.ayuda {
  position: fixed; left: 22px; bottom: max(22px, env(safe-area-inset-bottom)); z-index: 20;
  display: none; gap: 22px; padding: 16px 44px 16px 18px; border-radius: var(--radio);
  background: var(--panel); border: 1px solid var(--panel-borde);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: var(--sombra);
  font-size: 12.5px; color: var(--tinta-suave);
}
.modo-explorar .ayuda:not(.cerrada) { display: flex; }
.ayuda-col { display: flex; flex-direction: column; gap: 6px; }
.ayuda strong { color: var(--tinta); font-weight: 600; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 2px; }
kbd {
  display: inline-block; min-width: 20px; padding: 2px 5px; margin-right: 2px; text-align: center;
  font: 600 11px/1.3 var(--sans); color: var(--tinta); background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.16); border-bottom-width: 2px; border-radius: 5px;
}
.cerrar {
  position: absolute; top: 8px; right: 8px; width: 28px; height: 28px; border-radius: 50%;
  border: 0; background: rgba(255,255,255,.08); color: var(--tinta); font-size: 18px; line-height: 1; cursor: pointer;
}
.solo-tactil { display: none; }
@media (hover: none) and (pointer: coarse) {
  .solo-tactil { display: flex; }
  .solo-escritorio { display: none; }
}

/* Joystick táctil */
#joystick {
  position: fixed; z-index: 25; width: 120px; height: 120px; margin: -60px 0 0 -60px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.35); background: rgba(20,18,22,.25); display: none; pointer-events: none;
}
#joystick.activo { display: block; }
#joystick span {
  position: absolute; left: 50%; top: 50%; width: 52px; height: 52px; margin: -26px 0 0 -26px; border-radius: 50%;
  background: rgba(232,184,102,.8); box-shadow: 0 4px 14px rgba(0,0,0,.35);
}

/* Avisos */
#errorWebgl, .sin-js {
  position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; margin: 0; padding: 24px; text-align: center;
  background: #1b1a1f; color: var(--tinta); font-size: 16px;
}
#errorWebgl[hidden] { display: none; }

/* ---------- Móvil ---------- */
@media (max-width: 720px) {
  .barra { padding-left: 16px; padding-right: 16px; flex-wrap: wrap; row-gap: 8px; }
  .marca { font-size: 12px; }
  .opciones { order: 3; }
  .chip .txt { display: none; }
  .modos button { padding: 8px 12px; font-size: 12px; }
  .paso { padding: 130px 16px 60px; align-items: flex-end; }
  .paso:nth-child(even) { justify-content: flex-start; }
  .tarjeta { padding: 20px; max-width: 100%; }
  .progreso { right: 8px; height: 110px; }
  .ayuda { left: 16px; right: 16px; padding-right: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  .tarjeta { transition: none; }
  .carga-torre span, .raton::after { animation: none; }
}