/* =========================================================================
   Visor 3D / AR — hoja de estilos
   Tema claro y oscuro. Sin dependencias externas.
   ========================================================================= */

:root {
  /* ---- Paleta de marca (valores exactos) ---- */
  --primary:   #178F61;
  --secondary: #006F71;

  /* ---- Tonos derivados ----
     El primario y el secundario se usan tal cual como relleno. Para TEXTO hacen
     falta variantes con más contraste; estas cumplen AA (>=4.5:1) sobre su fondo:
       #0F6B48 sobre #FFFFFF → 6.5:1      #2FBF86 sobre #121212 → 8.0:1
       #006F71 sobre #FFFFFF → 6.0:1      #3FC9B0 sobre #121212 → 9.1:1        */
  --d-bg:            #121212;
  --d-bg-elev:       #1A1C1B;
  --d-stage-a:       #202422;
  --d-stage-b:       #121212;
  --d-text:          #F2F5F4;
  --d-text-soft:     #A6AFAC;
  --d-line:          #2B302E;
  --d-primary-ink:   #2FBF86;
  --d-secondary-ink: #3FC9B0;
  --d-warn-bg:       #2A2410;
  --d-warn-line:     #6B5A16;
  --d-warn-text:     #F0DFA6;
  --d-shadow:        0 1px 2px rgba(0,0,0,.5), 0 12px 34px rgba(0,0,0,.5);

  /* ---- Tema claro (por defecto) ---- */
  --bg:            #FFFFFF;
  --bg-elev:       #FFFFFF;
  --stage-a:       #F4F8F6;
  --stage-b:       #E4EBE8;
  --text:          #121212;
  --text-soft:     #5A6360;
  --line:          #E2E7E5;
  --primary-ink:   #0F6B48;
  --secondary-ink: #006F71;
  --on-primary:    #FFFFFF;
  --on-secondary:  #FFFFFF;
  --warn-bg:       #FFF7E3;
  --warn-line:     #E8C766;
  --warn-text:     #6B4E00;
  --shadow:        0 1px 2px rgba(18,18,18,.06), 0 10px 30px rgba(18,18,18,.08);
  --radius:        16px;
}

/* El tema oscuro se declara una sola vez arriba (--d-*) y aquí solo se asigna. */
:root[data-theme="dark"] {
  --bg:            var(--d-bg);
  --bg-elev:       var(--d-bg-elev);
  --stage-a:       var(--d-stage-a);
  --stage-b:       var(--d-stage-b);
  --text:          var(--d-text);
  --text-soft:     var(--d-text-soft);
  --line:          var(--d-line);
  --primary-ink:   var(--d-primary-ink);
  --secondary-ink: var(--d-secondary-ink);
  --warn-bg:       var(--d-warn-bg);
  --warn-line:     var(--d-warn-line);
  --warn-text:     var(--d-warn-text);
  --shadow:        var(--d-shadow);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:            var(--d-bg);
    --bg-elev:       var(--d-bg-elev);
    --stage-a:       var(--d-stage-a);
    --stage-b:       var(--d-stage-b);
    --text:          var(--d-text);
    --text-soft:     var(--d-text-soft);
    --line:          var(--d-line);
    --primary-ink:   var(--d-primary-ink);
    --secondary-ink: var(--d-secondary-ink);
    --warn-bg:       var(--d-warn-bg);
    --warn-line:     var(--d-warn-line);
    --warn-text:     var(--d-warn-text);
    --shadow:        var(--d-shadow);
  }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

svg {
  width: 1.15em;
  height: 1.15em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Barra superior ------------------------------------------------------ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px max(16px, env(safe-area-inset-left)) 12px max(16px, env(safe-area-inset-right));
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 26%, var(--primary), var(--secondary) 85%);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.08);
}

.topbar h1 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: -.01em;
  white-space: nowrap;
}

.brand-sub {
  margin: 0;
  font-size: .78rem;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
}
.badge--ok    { border-color: color-mix(in srgb, var(--secondary-ink) 55%, transparent); color: var(--secondary-ink); }
.badge--muted { color: var(--text-soft); }

.icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.icon-btn:hover { background: color-mix(in srgb, var(--text) 7%, transparent); }

/* --- Avisos -------------------------------------------------------------- */

.notice {
  margin: 0;
  padding: 11px 18px;
  font-size: .86rem;
  line-height: 1.5;
}
.notice--warn {
  background: var(--warn-bg);
  color: var(--warn-text);
  border-bottom: 1px solid var(--warn-line);
}
.notice code {
  padding: 1px 6px;
  border-radius: 5px;
  background: color-mix(in srgb, currentColor 14%, transparent);
  font-size: .92em;
}

/* --- Estructura ---------------------------------------------------------- */

.layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
}

.stage {
  position: relative;
  min-height: 0;
  background:radial-gradient(120% 90% at 50% 8%, var(--stage-a), var(--stage-b) 78%);
}

model-viewer {
  width: 100%;
  height: 100%;
  --poster-color: transparent;
  --progress-bar-color: transparent;
  background: transparent;
}

/* --- Botón AR ------------------------------------------------------------ */

.ar-button {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 22px;
  border: 0;
  border-radius: 999px;
  background: var(--secondary);
  color: var(--on-secondary);
  font: inherit;
  font-size: .93rem;
  font-weight: 650;
  cursor: pointer;
  box-shadow: 0 6px 22px rgba(0,0,0,.25);
  transition: transform .15s, filter .15s;
}
.ar-button:hover  { filter: brightness(1.06); }
.ar-button:active { transform: translateX(-50%) scale(.97); }

/* model-viewer oculta este botón por sí solo cuando el dispositivo no puede
   entrar en AR; la escena 3D sigue funcionando sin cámara. */

/* --- Barra de progreso --------------------------------------------------- */

.progress-track {
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: transparent;
  pointer-events: none;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  transition: width .2s ease-out, opacity .35s;
}
.progress-track[hidden] { display: none; }

/* --- Póster (fallback sin WebGL o mientras carga) ------------------------- */

.poster-slot {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
}
.poster-slot img {
  max-width: 78%;
  max-height: 78%;
  object-fit: contain;
  filter: drop-shadow(0 18px 28px rgba(0,0,0,.22));
}

/* --- Herramientas de la escena ------------------------------------------- */

.stage-toolbar {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: blur(8px);
  color: var(--text);
  font: inherit;
  font-size: .8rem;
  font-weight: 550;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.chip:hover { background: var(--bg-elev); }
.chip[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--primary) 60%, transparent);
  color: var(--primary-ink);
}

/* --- Error de carga ------------------------------------------------------ */

.stage-error {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 6px;
  padding: 24px;
  text-align: center;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
}
/* El atributo `hidden` debe ganar a las reglas de display de este archivo. */
.stage-error[hidden],
.notice[hidden] { display: none; }

.stage-error h2 { margin: 0; font-size: 1.05rem; }
.stage-error p  { margin: 0; max-width: 46ch; color: var(--text-soft); font-size: .88rem; }

/* --- Panel lateral ------------------------------------------------------- */

.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-left: 1px solid var(--line);
  background: var(--bg-elev);
}

.panel-info {
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 6px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--secondary-ink);
}

.panel-info h2 {
  margin: 0 0 10px;
  font-size: 1.55rem;
  font-weight: 640;
  letter-spacing: -.02em;
}

.piece-desc {
  margin: 0;
  color: var(--text-soft);
  font-size: .91rem;
}

.ar-hint {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 11px;
  background: color-mix(in srgb, var(--text) 5%, transparent);
  color: var(--text-soft);
  font-size: .8rem;
  line-height: 1.45;
}

/* --- Audioguía ------------------------------------------------------------ */

.audio {
  flex: none;
  padding: 16px 22px 18px;
  border-bottom: 1px solid var(--line);
}

.audio-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 11px;
}

.audio-head h3 {
  margin: 0;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.audio-piece {
  font-size: .78rem;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.langs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 13px;
}

.lang {
  padding: 7px 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: .74rem;
  font-weight: 620;
  line-height: 1.25;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.lang:hover { background: color-mix(in srgb, var(--text) 6%, transparent); }
.lang[aria-pressed="true"] {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary-ink);
}
.lang small {
  display: block;
  font-size: .64rem;
  font-weight: 600;
  letter-spacing: .05em;
  opacity: .7;
}

.player {
  display: flex;
  align-items: center;
  gap: 12px;
}

.play-btn {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: none;
  border: 0;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  cursor: pointer;
  transition: filter .15s, transform .12s;
}
.play-btn:hover  { filter: brightness(1.07); }
.play-btn:active { transform: scale(.94); }
.play-btn svg    { grid-area: 1 / 1; width: 22px; height: 22px; }
.play-btn:disabled { opacity: .45; cursor: not-allowed; }

/* Alternancia de iconos por clase: `hidden` no es fiable en elementos SVG. */
.play-btn .ico-pause,
.play-btn.is-playing .ico-play  { display: none; }
.play-btn.is-playing .ico-pause { display: block; }

.icon-btn .ico-muted,
.icon-btn.is-muted .ico-sound { display: none; }
.icon-btn.is-muted .ico-muted { display: block; }
.icon-btn--sm svg { grid-area: 1 / 1; }

.player-track { flex: 1; min-width: 0; }

.seek {
  display: block;
  width: 100%;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}
.seek:disabled { cursor: default; opacity: .5; }

.times {
  display: flex;
  justify-content: space-between;
  margin-top: 2px;
  color: var(--text-soft);
  font-size: .72rem;
  font-variant-numeric: tabular-nums;
}

.icon-btn--sm {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: var(--text-soft);
}

.audio-msg {
  margin: 11px 0 0;
  font-size: .78rem;
  color: var(--warn-text);
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 9px;
  padding: 8px 10px;
}
.audio-msg[hidden] { display: none; }

/* --- Miniaturas ---------------------------------------------------------- */

.rail {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 14px;
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.thumb {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: linear-gradient(160deg, var(--stage-a), var(--stage-b));
  color: var(--text);
  font: inherit;
  cursor: pointer;
  overflow: hidden;
  transition: border-color .15s, transform .15s;
}
.thumb:hover { transform: translateY(-2px); }
.thumb[aria-selected="true"] {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 8px;
}

.thumb-name {
  display: block;
  padding: 7px 10px 9px;
  border-top: 1px solid var(--line);
  background: var(--bg-elev);
  font-size: .82rem;
  font-weight: 580;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Diagnóstico --------------------------------------------------------- */

.diag {
  border-top: 1px solid var(--line);
  padding: 12px 22px 18px;
  font-size: .82rem;
}
.diag summary {
  cursor: pointer;
  color: var(--text-soft);
  font-weight: 560;
}
.diag dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  margin: 12px 0 0;
}
.diag dt { color: var(--text-soft); }
.diag dd { margin: 0; font-weight: 560; text-align: right; }

/* --- Foco visible -------------------------------------------------------- */

:where(button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* --- Responsive: móvil / tablet ------------------------------------------ */

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
  }

  .stage {height:40vh; }

  .panel {
    border-left: 0;
    border-top: 1px solid var(--line);
    max-height: 58vh;
    overflow-y: auto;
    margin-top: 40vh;
  }

  .panel-info { padding: 16px 16px 14px; }
  .panel-info h2 { font-size: 1.3rem; }

  .audio { padding: 14px 16px 16px; }

  .rail {
    flex: none;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    -webkit-overflow-scrolling: touch;
  }

  .thumbs {
    display: flex;
    gap: 10px;
  }

  .thumb {
    flex: none;
    width: 128px;
  }

  .stage-toolbar {
    flex-direction: row;
    top: auto;
    bottom: 14px;
    right: 12px;
    left: 12px;
    justify-content: flex-end;
  }

  .chip span { display: none; }
  .chip { padding: 9px; }

  .ar-button {
    left: 12px;
    bottom: 14px;
    transform: none;
  }
  .ar-button:active { transform: scale(.97); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}