/* ==========================================================================
   Plataforma enseñas - Estilos Principales
   Identidad Visual, HTML5 Semántico, Accesibilidad (WCAG 2.1 AA) y Responsive
   ========================================================================== */

:root {
  /* Paleta de Marca oficial de enseñas */
  --color-primary: #7C3AED;
  --color-primary-dark: #6D28D9;
  --color-primary-light: #DDD6FE;
  --color-secondary: #2563EB;
  --color-secondary-dark: #1D4ED8;
  --color-accent-gold: #F59E0B;
  --color-accent-red: #EF4444;
  --color-success: #10B981;

  /* Colores de Fondo y Superficie */
  --bg-main: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F1F5F9;
  --bg-dark: #0F172A;

  /* Tipografía y Contraste (WCAG compliant) */
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-light: #FFFFFF;
  --border-subtle: #E2E8F0;
  --border-focus: #7C3AED;

  /* Sombras y Elevaciones */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Radio de Bordes */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Transiciones */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* El sitio inicia claro. El interruptor conserva únicamente una elección explícita. */
html[data-theme="dark"] {
  --bg-main: #0B1220;
  --bg-surface: #111C2E;
  --bg-surface-alt: #19263A;
  --bg-dark: #020617;
  --text-main: #F8FAFC;
  --text-muted: #C5D1E1;
  --border-subtle: #334155;
  --border-focus: #C4B5FD;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 18px 34px rgba(0, 0, 0, 0.36);
}

/* Reset y Caja Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Reducción de movimiento para usuarios que lo soliciten */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Utilidad para Accesibilidad: Lectores de pantalla */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.is-hidden {
  display: none !important;
}

/* Salto directo accesible */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--color-primary);
  color: var(--text-light);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 10000;
  transition: top var(--transition-fast);
  text-decoration: none;
}

.skip-link:focus {
  top: 15px;
  outline: 3px solid var(--color-accent-gold);
}

/* Indicador de foco accesible global */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 3px;
}

/* ==========================================================================
   Identidad Visual "enseñas"
   ========================================================================== */
.brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: var(--radius-sm);
}

.brand-svg-logo {
  height: 48px;
  width: auto;
  display: block;
}

.brand-official-logo {
  height: 44px;
  width: auto;
  max-width: 210px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.brand-link:hover .brand-official-logo {
  transform: scale(1.02);
}

/* El mismo imagotipo oficial se vuelve blanco sin perder su transparencia. */
html[data-theme="dark"] .brand-official-logo,
html[data-theme="dark"] .auth-logo {
  filter: brightness(0) invert(1);
}

.brand-text-logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.highlight-inline {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #FFF;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  margin-left: 10px;
}

/* ==========================================================================
   Encabezado del Sitio
   ========================================================================== */
.site-header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-toggle {
  white-space: nowrap;
  gap: 6px;
}

.theme-toggle [data-theme-icon] {
  font-size: 1.05rem;
  line-height: 1;
}

.brand-group {
  display: flex;
  align-items: center;
}

.header-title-bar {
  background: linear-gradient(180deg, #F1F5F9 0%, #E2E8F0 100%);
  border-top: 1px solid #E2E8F0;
  padding: 16px 20px;
}

.header-title-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.object-main-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 4px;
}

.object-summary {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 850px;
}

/* ==========================================================================
   Botones y Elementos Interactivos
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px; /* Tamaño táctil mínimo WCAG */
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-sm {
  min-height: 36px;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--text-light);
  box-shadow: 0 4px 10px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface-alt);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: #E2E8F0;
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent-gold), #EA580C);
  color: #FFFFFF;
  box-shadow: 0 4px 10px rgba(234, 88, 12, 0.3);
}

.btn-accent:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #FFF;
}

/* ==========================================================================
   Estructura Principal
   ========================================================================== */
.main-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ==========================================================================
   Sección 1: Visor 3D / Realidad Aumentada (8th Wall / Three.js)
   ========================================================================== */
.ar-section {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.ar-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  background: #1E293B;
  color: #FFFFFF;
}

.ar-status-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 500;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-success);
}

.status-dot.pulsing {
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.ar-action-buttons {
  display: flex;
  gap: 8px;
}

.btn-ar-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-ar-action:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn-icon-only {
  padding: 6px 8px;
}

.ar-canvas-wrapper {
  width: 100%;
  height: 380px;
  background: radial-gradient(circle at center, #334155 0%, #0F172A 100%);
  position: relative;
  touch-action: none; /* Crucial para orbit controls y pinch */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.ar-canvas-wrapper canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  outline: none;
}

.ar-loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #FFF;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  gap: 12px;
  z-index: 10;
  transition: opacity var(--transition-normal);
}

.ar-loading-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.ar-gesture-hints {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 12px 18px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hint-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 8px;
}

.hint-item svg {
  color: var(--color-primary);
}

/* ==========================================================================
   Sección 2: Multimedia y Videos Paralelos Sincronizados (CA3)
   ========================================================================== */
.media-section {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  padding: 24px;
}

.section-title-wrap {
  margin-bottom: 20px;
}

.section-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 20px;
  transition: all var(--transition-normal);
}

@media (min-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Cuando el modo LSC está activo y el video de uso se oculta */
.video-grid.learning-active {
  grid-template-columns: 1fr;
}

.video-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.video-figure.is-hidden-accessible {
  display: none !important;
}

.video-player-wrapper {
  position: relative;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sync-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  color: #FFF;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(2px);
  pointer-events: none;
  z-index: 5;
}

.badge-lsc {
  background: rgba(124, 58, 237, 0.85);
}

.video-caption {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 4px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.video-caption svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-primary);
}

/* Barra de controles unificados (nav semántica) */
.video-controls-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-surface-alt);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.playback-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-control {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px 14px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.btn-control:hover {
  background: #FFFFFF;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-play {
  background: var(--color-primary);
  color: #FFF;
  border-color: var(--color-primary);
}

.btn-play:hover {
  background: var(--color-primary-dark);
  color: #FFF;
}

.btn-lsc-mode {
  padding: 8px 16px;
  font-size: 0.92rem;
}

/* Barra de progreso compartida */
.video-progress-container {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 4px 8px;
}

.progress-slider {
  flex-grow: 1;
  height: 8px;
  accent-color: var(--color-primary);
  cursor: pointer;
  border-radius: var(--radius-full);
}

.time-display {
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  font-weight: 500;
  min-width: 85px;
  text-align: right;
}

/* ==========================================================================
   Sección 3: Módulo de Aprendizaje de Seña (CA4 - aside / article)
   ========================================================================== */
.lsc-learning-panel {
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-card {
  background: linear-gradient(180deg, var(--bg-surface-alt) 0%, var(--bg-surface) 100%);
  color: var(--text-main);
  border: 2px solid var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.panel-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 4px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.panel-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.panel-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.steps-ordered-list {
  list-style: none;
  counter-reset: steps-counter;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.step-item {
  counter-increment: steps-counter;
  position: relative;
  padding: 16px 18px 16px 56px;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-size: 0.95rem;
  line-height: 1.5;
}

.step-item::before {
  content: counter(steps-counter);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.tip-box {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #FEF3C7;
  border: 1px solid #FDE68A;
  color: #92400E;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-bottom: 16px;
}

.tip-box svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.panel-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 640px) {
  .panel-footer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .tip-box {
    margin-bottom: 0;
    max-width: 70%;
  }
}

/* ==========================================================================
   Página de Error 404
   ========================================================================== */
.main-error-page {
  max-width: 680px;
  margin: 60px auto;
  padding: 20px;
}

.error-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lg);
  padding: 40px 32px;
  text-align: center;
}

.error-badge {
  font-family: 'Montserrat', sans-serif;
  font-size: 5rem;
  font-weight: 900;
  color: var(--color-primary-light);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.error-description {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.error-param {
  color: var(--color-accent-red);
  background: #FEE2E2;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Catálogo Principal (index.php)
   ========================================================================== */
.catalog-hero {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(180deg, #FAF5FF 0%, var(--bg-main) 100%);
  border-bottom: 1px solid var(--border-subtle);
}

.catalog-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.catalog-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto;
}

.objects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.object-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.object-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.object-card-header {
  margin-bottom: 16px;
}

.object-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.object-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.qr-code-box {
  background: #F8FAFC;
  border: 2px dashed #CBD5E1;
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 16px 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.qr-image {
  width: 150px;
  height: 150px;
  display: block;
}

.qr-scan-hint {
  font-size: 0.8rem;
  color: #64748B;
  font-weight: 600;
}

/* ==========================================================================
   Pie de Página (Footer)
   ========================================================================== */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  border-top: 1px solid #1E293B;
  padding: 40px 20px 24px;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .footer-container {
    grid-template-columns: 2fr 1fr;
  }
}

.footer-brand {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.6rem;
  font-weight: 300;
  color: #FFFFFF;
  text-decoration: none;
  display: inline-block;
  margin-bottom: 12px;
}

.footer-text {
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 500px;
}

.footer-subheading {
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.accessibility-checklist {
  list-style: none;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.accessibility-checklist li::before {
  content: "✓ ";
  color: var(--color-success);
  font-weight: bold;
}

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid #1E293B;
  text-align: center;
  font-size: 0.82rem;
  color: #64748B;
}

/* ==========================================================================
   Visor de Realidad Aumentada Inmersivo Directo (CA1 & CA2)
   ========================================================================== */
.experience-page.ar-active-body {
  overflow-x: hidden;
}

/* Modo Inmersivo de Pantalla Completa / Directo por QR */
.ar-section.ar-immersive {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  max-width: none;
  z-index: 9999;
  border-radius: 0;
  border: none;
  display: flex;
  flex-direction: column;
}

.ar-section.ar-immersive .ar-canvas-wrapper {
  flex: 1;
  height: 100%;
}

.ar-section.ar-immersive .ar-gesture-hints {
  display: none; /* Ocultar para máxima inmersión en pantalla completa */
}

/* Video de Cámara Real (SLAM Passthrough) */
.ar-camera-feed {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  display: none;
  pointer-events: none;
}

.ar-camera-feed.is-active {
  display: block;
}

.ar-canvas-wrapper canvas {
  position: relative;
  z-index: 2;
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* Botón Salir / Ver Ficha */
.btn-ar-exit {
  background: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  color: #FFF !important;
}

/* Prompt de Inicio Directo para QR en Móviles */
.ar-direct-start-prompt {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}

.ar-direct-start-prompt.is-visible {
  display: flex;
}

.direct-start-card {
  background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 100%);
  border: 2px solid rgba(124, 58, 237, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  color: #FFFFFF;
  animation: scaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.direct-start-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(124, 58, 237, 0.3);
  border: 1px solid rgba(124, 58, 237, 0.6);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: #DDD6FE;
  margin-bottom: 16px;
}

.direct-badge-logo {
  height: 20px;
  width: auto;
}

.direct-start-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.direct-start-desc {
  font-size: 0.92rem;
  color: #94A3B8;
  line-height: 1.5;
  margin-bottom: 24px;
}

.direct-start-button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px 20px;
  box-shadow: 0 8px 20px rgba(124, 58, 237, 0.4);
  animation: pulseBtn 2s infinite;
}

@keyframes pulseBtn {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); box-shadow: 0 10px 25px rgba(124, 58, 237, 0.6); }
  100% { transform: scale(1); }
}

/* ==========================================================================
   Reproductor de Audio Explicativo Flotante en RA
   ========================================================================== */
.ar-floating-audio {
  position: absolute;
  bottom: 18px;
  left: 18px;
  z-index: 25;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(124, 58, 237, 0.35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-full);
  padding: 8px 16px 8px 8px;
  color: #FFFFFF;
  max-width: calc(100% - 36px);
  transition: all var(--transition-normal);
}

.btn-audio-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-primary);
  border: none;
  color: #FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.btn-audio-circle:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
}

.btn-audio-mini {
  background: transparent;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.btn-audio-mini:hover {
  color: #FFF;
}

.btn-audio-mini.is-muted {
  color: var(--color-accent-red);
}

.ar-audio-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}

.ar-audio-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.ar-audio-tag {
  font-weight: 700;
  color: #DDD6FE;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ar-audio-time {
  color: #94A3B8;
  font-variant-numeric: tabular-nums;
  font-size: 0.72rem;
}

.ar-audio-progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.ar-audio-progress-fill {
  width: 0%;
  height: 100%;
  background: var(--color-primary);
  transition: width 0.1s linear;
}

/* Animación de Onda Sonora */
.ar-audio-wave {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 18px;
  padding: 0 4px;
}

.ar-audio-wave span {
  width: 3px;
  height: 4px;
  background: #A78BFA;
  border-radius: 2px;
  transition: height 0.2s ease;
}

.ar-audio-wave.is-animating span:nth-child(1) { animation: waveAnim 0.8s infinite ease-in-out; }
.ar-audio-wave.is-animating span:nth-child(2) { animation: waveAnim 0.8s 0.15s infinite ease-in-out; }
.ar-audio-wave.is-animating span:nth-child(3) { animation: waveAnim 0.8s 0.3s infinite ease-in-out; }
.ar-audio-wave.is-animating span:nth-child(4) { animation: waveAnim 0.8s 0.45s infinite ease-in-out; }
.ar-audio-wave.is-animating span:nth-child(5) { animation: waveAnim 0.8s 0.6s infinite ease-in-out; }

@keyframes waveAnim {
  0%, 100% { height: 4px; }
  50% { height: 18px; }
}

/* ==========================================================================
   Overlay de Video en Lengua de Señas Colombiana (LSC)
   ========================================================================== */
.ar-floating-lsc {
  position: absolute;
  z-index: 25;
  width: 255px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(14px);
  border: 1.5px solid rgba(124, 58, 237, 0.5);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5), 0 0 15px rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

/* Posiciones en esquinas */
.ar-floating-lsc.pos-bottom-right { bottom: 18px; right: 18px; }
.ar-floating-lsc.pos-bottom-left  { bottom: 18px; left: 18px; }
.ar-floating-lsc.pos-top-right    { top: 60px; right: 18px; }
.ar-floating-lsc.pos-top-left     { top: 60px; left: 18px; }

.lsc-overlay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 9px;
  background: rgba(30, 27, 75, 0.8);
  border-bottom: 1px solid rgba(124, 58, 237, 0.3);
}

.lsc-overlay-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.66rem;
  font-weight: 700;
  color: #DDD6FE;
}

.lsc-overlay-controls {
  display: flex;
  gap: 4px;
}

.btn-overlay-ctrl {
  background: transparent;
  border: none;
  color: #94A3B8;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-overlay-ctrl:hover {
  color: #FFF;
  background: rgba(255, 255, 255, 0.1);
}

.lsc-overlay-body {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  height: auto;
  background: #020617;
  overflow: hidden;
}

.overlay-lsc-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Estado de Muestra / Vacío con Silueta de Intérprete */
.lsc-overlay-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  text-align: center;
  background: radial-gradient(circle at center, #2E1065 0%, #0F172A 100%);
  color: #FFFFFF;
}

.lsc-overlay-placeholder.is-hidden {
  display: none;
}

.lsc-interpreter-silhouette {
  width: 50px;
  height: 50px;
  position: relative;
  margin-bottom: 6px;
}

.silhouette-head {
  width: 18px;
  height: 18px;
  background: #C4B5FD;
  border-radius: 50%;
  margin: 0 auto 3px;
}

.silhouette-body {
  width: 32px;
  height: 20px;
  background: #8B5CF6;
  border-radius: 8px 8px 0 0;
  margin: 0 auto;
}

.silhouette-hands {
  position: absolute;
  top: 18px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
}

.hand-left, .hand-right {
  width: 10px;
  height: 10px;
  background: #FCD34D;
  border-radius: 50%;
  animation: handGesture 2.2s infinite ease-in-out;
}

.hand-right {
  animation-delay: 1.1s;
}

@keyframes handGesture {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.15); }
}

.placeholder-caption {
  font-size: 0.78rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 2px;
}

.placeholder-sub {
  font-size: 0.68rem;
  color: #A78BFA;
  margin-bottom: 6px;
}

.placeholder-tag {
  font-size: 0.65rem;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.2);
  color: #FCD34D;
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* Modo Minimizado del Overlay LSC */
.ar-floating-lsc.is-minimized {
  width: auto;
  border-radius: var(--radius-full);
}

.ar-floating-lsc.is-minimized .lsc-overlay-body {
  display: none;
}

.ar-floating-lsc.is-minimized .icon-minimize {
  display: none;
}

.ar-floating-lsc.is-minimized .icon-expand {
  display: block !important;
}

/* ==========================================================================
   Personalizador de Códigos QR para el Aula (index.html)
   ========================================================================== */
.qr-customizer-card {
  background: #FFFFFF;
  border: 2px solid var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.qr-customizer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

.qr-customizer-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
}

.qr-customizer-title svg {
  color: var(--color-primary);
}

.qr-customizer-title h3 {
  font-size: 1.15rem;
  font-weight: 700;
}

.qr-badge-direct {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
}

.qr-customizer-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.qr-customizer-desc code {
  background: var(--bg-surface-alt);
  color: var(--color-primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

.qr-customizer-inputs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.qr-url-input {
  flex: 1;
  min-width: 260px;
  padding: 10px 14px;
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--text-main);
  background: var(--bg-surface);
}

.qr-url-input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.printable-qr-tag {
  position: relative;
}

.qr-tag-brand {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 300;
  margin-bottom: 4px;
  font-family: 'Montserrat', sans-serif;
}

.qr-tag-brand strong {
  font-weight: 900;
}

.qr-direct-target {
  font-size: 0.72rem;
  color: var(--color-success);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* Estilos de Impresión para Fichas de Aula */
@media print {
  body {
    background: #FFF !important;
  }

  .site-header, .site-footer, .catalog-hero, .qr-customizer-card, .object-card-actions, .skip-link {
    display: none !important;
  }

  .objects-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }

  .object-card {
    border: 2px dashed #64748B !important;
    page-break-inside: avoid;
    box-shadow: none !important;
    padding: 16px !important;
  }

  .qr-code-box {
    border: 1px solid #CBD5E1 !important;
    padding: 10px !important;
  }
}

/* Responsividad en Teléfonos Móviles */
@media (max-width: 640px) {
  .ar-floating-audio {
    bottom: 12px;
    left: 12px;
    padding: 6px 12px 6px 6px;
    max-width: calc(100% - 24px);
  }

  .ar-audio-info {
    min-width: 110px;
  }

  .ar-floating-lsc {
    width: 150px;
  }

  .ar-floating-lsc.pos-bottom-right {
    bottom: 74px; /* Elevar para que no tape el reproductor de audio */
    right: 12px;
  }
}

/* ==========================================================================
   INTERFAZ DE DETECCIÓN DE SUPERFICIE Y RETÍCULA DE ANCLAJE (FLOOR TRACKING)
   ========================================================================== */
.ar-surface-scan-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 24px 20px;
  pointer-events: none;
  z-index: 40;
  transition: opacity 0.3s ease;
}

.ar-surface-scan-overlay.is-hidden {
  opacity: 0;
  pointer-events: none;
  display: none !important;
}

.scan-instruction-card {
  pointer-events: auto;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(124, 58, 237, 0.4);
  border-radius: var(--radius-lg);
  padding: 14px 20px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: floatSubtle 3s ease-in-out infinite;
}

.scan-step-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #FFF;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
}

.scan-title {
  color: #FFF;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.scan-desc {
  color: #CBD5E1;
  font-size: 0.85rem;
  line-height: 1.4;
  margin: 0;
}

.scan-motion-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 10px;
}

.phone-icon-animated {
  width: 38px;
  height: 38px;
  color: #38BDF8;
  animation: phoneMove 2s infinite ease-in-out;
}

@keyframes phoneMove {
  0%, 100% { transform: translateX(-20px) rotate(-8deg); }
  50% { transform: translateX(20px) rotate(8deg); }
}

@keyframes floatSubtle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.scan-action-container {
  pointer-events: auto;
  width: 100%;
  max-width: 360px;
  margin-bottom: 20px;
}

.btn-anchor-action {
  width: 100%;
  padding: 14px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFF;
  border: none;
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-anchor-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.5);
}

.btn-anchor-action:active {
  transform: translateY(1px);
}

.btn-reanchor-floating {
  position: absolute;
  top: 64px;
  left: 16px;
  z-index: 35;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  color: #E2E8F0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-reanchor-floating:hover {
  background: rgba(124, 58, 237, 0.9);
  color: #FFF;
}

.btn-ar-action.is-active-overlay {
  background: var(--color-primary) !important;
  color: #FFF !important;
}

/* ==========================================================================
   ESTILOS DEL PANEL DE ADMINISTRACIÓN (ADMIN STUDIO /admin)
   ========================================================================== */
.admin-body {
  background-color: #0F172A;
  color: #E2E8F0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  background: #1E293B;
  border-bottom: 1px solid #334155;
}

.admin-badge {
  background: linear-gradient(135deg, #F59E0B, #EF4444);
}

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

.admin-user-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 12px;
  border-left: 1px solid #334155;
}

.admin-user-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #94A3B8;
}

/* Auth View */
.admin-auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.auth-card {
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.4);
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-logo {
  height: 48px;
  width: auto;
  margin-bottom: 14px;
}

.auth-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 6px;
}

.auth-subtitle {
  font-size: 0.85rem;
  color: #94A3B8;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-alert {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid #EF4444;
  color: #FCA5A5;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.auth-help-box {
  background: #0F172A;
  border: 1px dashed #334155;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.8rem;
  color: #94A3B8;
  margin-top: 8px;
}

.auth-help-box code {
  color: #38BDF8;
  display: block;
  margin-top: 4px;
  font-family: monospace;
}

/* Dashboard View */
.admin-dashboard-container {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px;
}

.dashboard-header-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.dashboard-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #F8FAFC;
}

.dashboard-subtitle {
  font-size: 0.95rem;
  color: #94A3B8;
  margin-top: 4px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-purple { background: rgba(124, 58, 237, 0.2); color: #A78BFA; }
.icon-green  { background: rgba(16, 185, 129, 0.2); color: #34D399; }
.icon-blue   { background: rgba(37, 99, 235, 0.2); color: #60A5FA; }
.icon-amber  { background: rgba(245, 158, 11, 0.2); color: #FBBF24; }

.stat-value {
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: #FFF;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.8rem;
  color: #94A3B8;
  font-weight: 500;
}

/* Table */
.table-section {
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-toolbar {
  padding: 16px 20px;
  border-bottom: 1px solid #334155;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #0F172A;
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  padding: 8px 14px;
  width: 100%;
  max-width: 380px;
  color: #94A3B8;
}

.search-input {
  background: transparent;
  border: none;
  outline: none;
  color: #FFF;
  font-size: 0.9rem;
  width: 100%;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.admin-table th {
  background: #0F172A;
  color: #94A3B8;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 14px 20px;
  border-bottom: 1px solid #334155;
}

.admin-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #334155;
  color: #E2E8F0;
  font-size: 0.9rem;
}

.table-object-cell {
  display: flex;
  align-items: center;
  gap: 14px;
}

.table-thumb-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: #0F172A;
  border: 1px solid #334155;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7C3AED;
}

.table-obj-title {
  display: block;
  font-size: 0.98rem;
  color: #FFF;
}

.table-obj-id {
  font-size: 0.78rem;
  color: #64748B;
}

.table-obj-id code {
  color: #38BDF8;
}

.badge-category {
  display: inline-block;
  background: rgba(148, 163, 184, 0.15);
  color: #CBD5E1;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.media-badges-list {
  display: flex;
  gap: 6px;
}

.badge-media {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: #64748B;
}

.badge-media.is-active {
  background: rgba(124, 58, 237, 0.25);
  color: #C4B5FD;
}

/* Switch Toggle */
.switch-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
  background-color: #475569;
  transition: 0.2s;
  border-radius: 20px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #10B981;
}

input:checked + .slider:before {
  transform: translateX(18px);
}

.switch-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: #CBD5E1;
}

.action-buttons-group {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.btn-xs {
  padding: 5px 10px;
  font-size: 0.78rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.btn-danger {
  background: #DC2626;
  color: #FFF;
  border: none;
}

.btn-danger:hover {
  background: #B91C1C;
}

/* Modal Form */
.admin-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.admin-modal.is-hidden {
  display: none !important;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid #334155;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.modal-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: #A78BFA;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #FFF;
  margin-top: 2px;
}

.btn-close-circle {
  background: #0F172A;
  border: 1px solid #334155;
  color: #94A3B8;
  font-size: 1.4rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.modal-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-section {
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  padding: 16px;
  background: rgba(15, 23, 42, 0.4);
}

.section-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #CBD5E1;
}

.legend-number {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #FFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 12px;
}

@media (max-width: 600px) {
  .form-row-2 {
    grid-template-columns: 1fr;
  }
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: #94A3B8;
  margin-bottom: 5px;
}

.label-with-badge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: #0F172A;
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  color: #FFF;
  padding: 9px 12px;
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-primary);
}

.input-upload-group {
  display: flex;
  gap: 8px;
}

.btn-file-upload {
  background: #334155;
  color: #E2E8F0;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.btn-file-upload:hover {
  background: var(--color-primary);
  color: #FFF;
}

.field-hint {
  display: block;
  font-size: 0.75rem;
  color: #64748B;
  margin-top: 4px;
}

.field-hint code {
  color: #38BDF8;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid #334155;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: #0F172A;
}

.admin-footer {
  background: #0F172A;
  border-top: 1px solid #1E293B;
  padding: 16px 20px;
  text-align: center;
  font-size: 0.8rem;
  color: #64748B;
}

/* Pie institucional único: sin información técnica ni de implementación. */
.institutional-footer {
  padding: 22px 20px;
  text-align: center;
}

.institutional-footer p,
.admin-footer p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.5;
}

/* ==========================================================================
   Nuevas Tarjetas de Previsualización del Catálogo Público (Sin QR)
   ========================================================================== */
.preview-card {
  padding: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.preview-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 30px -8px rgba(124, 58, 237, 0.18);
}

.object-card-media-wrapper {
  position: relative;
  width: 100%;
  height: 190px;
  background: #0B0F19;
  overflow: hidden;
}

.card-preview-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.preview-card:hover .card-preview-thumb {
  transform: scale(1.04);
}

.card-preview-hologram {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at center, #2E1065 0%, #0B0F19 80%);
  color: #A78BFA;
  gap: 10px;
}

.hologram-cube {
  animation: floatHologram 3s ease-in-out infinite;
  filter: drop-shadow(0 0 12px rgba(167, 139, 250, 0.6));
}

@keyframes floatHologram {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-6px) rotate(3deg); }
}

.hologram-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: #DDD6FE;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.preview-badge-category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  color: #DDD6FE;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.preview-badge-ra {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(16, 185, 129, 0.9);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

.object-card-content {
  padding: 20px 20px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.object-card-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.3;
}

.object-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.card-features-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.pill-feature {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-alt);
  color: #94A3B8;
  border: 1px solid var(--border-subtle);
}

.pill-feature.pill-active {
  background: rgba(124, 58, 237, 0.08);
  color: var(--color-primary);
  border-color: rgba(124, 58, 237, 0.25);
}

.preview-card .object-card-actions {
  padding: 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preview-card .object-card-actions .btn {
  width: 100%;
}

.preview-card .object-card-actions .btn svg {
  display: none;
}

/* ==========================================================================
   Modal de Código QR Personalizado en /admin
   ========================================================================== */
.modal-qr-content {
  max-width: 620px;
}

.qr-modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.qr-preview-card {
  display: flex;
  gap: 24px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid #334155;
  border-radius: var(--radius-md);
  padding: 20px;
  align-items: center;
}

@media (max-width: 600px) {
  .qr-preview-card {
    flex-direction: column;
    text-align: center;
  }
}

.qr-canvas-holder {
  background: #FFFFFF;
  border: 2px solid #334155;
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.qr-canvas-holder canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

.qr-details-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.qr-obj-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.25;
}

.qr-url-box {
  margin-top: 6px;
}

.qr-brand-notice {
  display: flex;
  gap: 8px;
  font-size: 0.75rem;
  color: #94A3B8;
  line-height: 1.4;
  margin-top: 6px;
}

.qr-brand-notice svg {
  flex-shrink: 0;
  color: #A78BFA;
  margin-top: 2px;
}

.qr-actions-toolbar {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (min-width: 520px) {
  .qr-actions-toolbar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .qr-actions-toolbar #btn-print-qr-card {
    grid-column: 1 / -1;
  }
}

/* ===========================================================================
   Ajustes mobile-first del visor: controles alcanzables y overlays contenidos
   ========================================================================== */
.ar-section {
  min-height: min(760px, 100svh);
}

.ar-canvas-wrapper {
  min-height: clamp(420px, 62svh, 720px);
  overflow: hidden;
}

.ar-floating-audio,
.ar-floating-lsc {
  max-width: calc(100% - 24px);
}

.btn,
.btn-ar-action,
.btn-anchor-action,
.btn-reanchor-floating,
.btn-audio-circle,
.btn-audio-mini,
.btn-overlay-ctrl {
  min-height: 48px;
}

@media (max-width: 700px) {
  .main-layout { padding-inline: 12px; }
  .ar-section { margin-inline: -12px; border-radius: 0; min-height: 100svh; }
  .ar-header-bar { align-items: flex-start; gap: 10px; padding: 10px 12px; }
  .ar-action-buttons { gap: 8px; width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .btn-ar-action { flex: 0 0 auto; min-height: 48px; }
  .ar-canvas-wrapper { min-height: 64svh; height: 64svh; }
  .ar-floating-audio {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
  }
  .ar-floating-lsc {
    right: 12px;
    bottom: 96px;
    width: min(180px, calc(100vw - 24px));
  }
  .ar-floating-lsc.pos-bottom-left { left: 12px; right: auto; }
  .ar-floating-lsc.pos-top-left { left: 12px; right: auto; top: 12px; bottom: auto; }
  .ar-floating-lsc.pos-top-right { right: 12px; top: 12px; bottom: auto; }
  .ar-gesture-hints { grid-template-columns: 1fr; gap: 8px; padding: 12px; }
  .direct-start-card { width: min(100% - 24px, 520px); padding: 20px; }
  .direct-start-button { min-height: 52px; width: 100%; }
  .modal-content { width: calc(100% - 20px); max-height: calc(100svh - 20px); }
  .form-row-2, .input-upload-group { grid-template-columns: 1fr; display: grid; }
  .btn-file-upload { min-height: 48px; }
}

/* ===========================================================================
   Experiencia móvil: vista 3D, práctica de seña e intérprete son flujos distintos
   ========================================================================== */
.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-ar-action:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.btn-anchor-action:disabled {
  opacity: 0.65;
  cursor: wait;
  box-shadow: none;
}

.lsc-learning-panel {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.lsc-learning-video-wrap {
  width: min(100%, 680px);
  margin: 20px auto;
  background: var(--bg-surface-alt);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lsc-learning-video-wrap > h4 {
  color: var(--text-main);
  font-size: 1rem;
  padding: 12px 16px 0;
  overflow-wrap: anywhere;
}

.lsc-learning-video-wrap > .community-author {
  color: var(--text-muted);
  margin: 0;
  padding: 4px 16px 12px;
  overflow-wrap: anywhere;
}

.lsc-learning-video-wrap > :is(h4, .community-author):empty { display: none; }

.lsc-learning-panel .btn-outline { color: var(--border-focus); border-color: var(--border-focus); }
.lsc-learning-panel .btn-outline:hover { background: var(--color-primary); color: #FFFFFF; border-color: var(--color-primary); }

.lsc-learning-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #020617;
}

.lsc-learning-empty {
  margin: 0;
  padding: 18px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

@media (max-width: 700px) {
  .site-header { position: static; }
  .header-container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    padding: 10px 12px;
  }
  .brand-badge { display: none; }
  .brand-official-logo { height: 36px; max-width: 132px; }
  .header-nav { gap: 6px; }
  .header-nav .btn { min-height: 42px; padding: 7px 9px; font-size: 0.78rem; }
  .header-nav .btn svg { display: none; }
  .header-title-bar { padding: 18px 20px; }
  .object-main-title { font-size: 1.75rem; }

  .ar-section { min-height: 0; }
  .ar-section:not(.ar-immersive) { margin-inline: -12px; border-radius: 0; }
  .ar-header-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 10px 12px;
  }
  .ar-status-indicator { font-size: 0.78rem; }
  .ar-action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    gap: 8px;
    overflow: visible;
    padding: 0;
  }
  .btn-ar-action { justify-content: center; min-width: 0; padding: 8px; font-size: 0.8rem; }
  #btn-toggle-ar-mode { grid-column: 1 / -1; }
  #btn-flip-camera,
  #btn-reset-view,
  #btn-toggle-fullscreen,
  #btn-close-ar-mode { display: none; }
  .ar-section:not(.ar-immersive) .ar-canvas-wrapper {
    min-height: 0;
    height: auto;
    max-height: 420px;
    aspect-ratio: 1 / 1;
  }
  .ar-gesture-hints { display: none; }

  .ar-floating-audio {
    left: 12px;
    right: 12px;
    bottom: 12px;
    width: auto;
    gap: 8px;
    padding: 6px 8px 6px 6px;
  }
  .ar-audio-info { min-width: 0; flex: 1; }
  .ar-audio-tag { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.68rem; }
  .ar-audio-wave,
  #btn-ar-audio-replay { display: none; }

  .ar-floating-lsc,
  .ar-floating-lsc.pos-bottom-right,
  .ar-floating-lsc.pos-bottom-left,
  .ar-floating-lsc.pos-top-right,
  .ar-floating-lsc.pos-top-left {
    top: auto;
    right: 12px;
    bottom: 86px;
    left: auto;
    width: min(42vw, 165px);
  }
  .lsc-overlay-body { aspect-ratio: 16 / 9; height: auto; }

  .ar-section.ar-immersive {
    min-height: 100svh;
    margin: 0;
  }
  .ar-section.ar-immersive .ar-header-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 45;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.62));
  }
  .ar-section.ar-immersive .ar-canvas-wrapper { height: 100%; min-height: 0; }
  .ar-section.ar-immersive .ar-canvas-wrapper,
  .ar-section.ar-immersive .ar-canvas-wrapper canvas { background: transparent; }
  .ar-section.ar-immersive #btn-toggle-ar-mode { grid-column: auto; }
  .ar-section.ar-immersive .ar-action-buttons { grid-template-columns: 1fr 1fr; }
  .ar-section.ar-immersive #btn-reanchor-view { grid-column: auto; }
  .ar-section.ar-immersive .scan-instruction-card { margin-top: 104px; }

  .lsc-learning-panel { padding: 0 4px; }
  .lsc-learning-video-wrap { margin: 16px 0; }
}

/* En RA la cámara es protagonista: los controles móviles se reducen y el
   escaneo ocupa únicamente el espacio necesario. */
@media (max-width: 700px) {
  .ar-section.ar-mode-active .ar-header-bar {
    padding: 7px 10px;
    gap: 6px;
  }

  .ar-section.ar-mode-active .ar-status-indicator {
    font-size: 0.76rem;
    line-height: 1.25;
  }

  .ar-section.ar-mode-active .ar-action-buttons { gap: 6px; }
  .ar-section.ar-mode-active .btn-ar-action {
    min-height: 44px;
    padding: 7px 8px;
    font-size: 0.79rem;
  }

  /* Durante el escaneo solo queda la salida: evita botones encimados. */
  .ar-section.ar-mode-active.is-scanning .ar-action-buttons {
    grid-template-columns: 1fr !important;
  }
  .ar-section.ar-mode-active.is-scanning #btn-open-sign-learning,
  .ar-section.ar-mode-active.is-scanning #btn-toggle-lsc-overlay {
    display: none;
  }

  .ar-section.ar-mode-active .ar-surface-scan-overlay {
    justify-content: flex-start;
    padding: 112px 12px 0;
    background: transparent;
  }

  .ar-section.ar-mode-active .scan-instruction-card {
    width: min(100%, 310px);
    padding: 9px 12px;
    border-radius: 12px;
    animation: none;
  }

  .ar-section.ar-mode-active .scan-step-pill {
    margin-bottom: 3px;
    padding: 3px 8px;
    font-size: 0.63rem;
  }
  .ar-section.ar-mode-active .scan-title { font-size: 0.95rem; margin-bottom: 2px; }
  .ar-section.ar-mode-active .scan-desc { font-size: 0.75rem; line-height: 1.3; }
  .ar-section.ar-mode-active .scan-motion-indicator { display: none; }

  .ar-section.ar-mode-active .scan-action-container {
    position: absolute;
    bottom: calc(68px + env(safe-area-inset-bottom));
    width: min(250px, calc(100% - 24px));
    margin: 0;
  }

  .ar-section.ar-mode-active .btn-anchor-action {
    min-height: 44px;
    padding: 9px 14px;
    font-size: 0.84rem;
    gap: 7px;
    box-shadow: 0 5px 14px rgba(16, 185, 129, 0.35);
  }

  .ar-section.ar-mode-active .ar-floating-audio {
    left: 8px;
    right: 8px;
    bottom: calc(8px + env(safe-area-inset-bottom));
    max-width: none;
    min-height: 48px;
    padding: 5px 8px 5px 5px;
    gap: 7px;
    z-index: 46;
  }

  .ar-section.ar-mode-active .btn-audio-circle {
    width: 38px;
    height: 38px;
  }
  .ar-section.ar-mode-active .ar-audio-info { min-width: 0; flex: 1; }
  .ar-section.ar-mode-active .ar-floating-lsc { z-index: 46; }
}

/* Intérprete compacto: deja espacio para manipular el objeto dentro del visor. */
.ar-audio-header { gap: 8px; min-width: 0; }
.ar-audio-tag { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ar-audio-time { flex-shrink: 0; }
.ar-section.ar-immersive .ar-canvas-wrapper { min-height: 0; flex: 1 1 0; height: auto; }
.ar-section.ar-immersive .ar-header-bar { position: absolute; inset: 0 0 auto; z-index: 45; }
.ar-floating-lsc .lsc-overlay-body { aspect-ratio: 1; }
@media (max-width: 700px) {
  .ar-section .ar-floating-lsc { width: min(52vw, 220px, calc(100vw - 148px)); }
  .ar-section.ar-immersive .ar-floating-lsc { width: min(52vw, 220px, calc(100dvh - 230px)); bottom: calc(76px + env(safe-area-inset-bottom)); }
  .ar-section.ar-immersive .lsc-overlay-body { aspect-ratio: 1; }
}
@media (max-height: 500px) and (min-width: 701px) {
  .ar-section.ar-immersive .ar-floating-lsc { width: min(255px, calc(100dvh - 240px)); bottom: 74px; }
}

/* Administración también parte de modo claro. Su diseño original tenía colores
   fijos oscuros, por eso se declaran aquí las superficies claras equivalentes. */
html[data-theme="light"] .admin-body { background: #F8FAFC; color: #0F172A; }
html[data-theme="light"] .admin-header { background: #FFFFFF; border-bottom-color: #E2E8F0; }
html[data-theme="light"] .admin-user-menu { border-left-color: #E2E8F0; }
html[data-theme="light"] .admin-user-label,
html[data-theme="light"] .auth-subtitle,
html[data-theme="light"] .dashboard-subtitle,
html[data-theme="light"] .stat-label,
html[data-theme="light"] .form-label { color: #475569; }
html[data-theme="light"] .auth-card,
html[data-theme="light"] .stat-card,
html[data-theme="light"] .table-section,
html[data-theme="light"] .modal-content { background: #FFFFFF; border-color: #E2E8F0; box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08); }
html[data-theme="light"] .auth-title,
html[data-theme="light"] .dashboard-title,
html[data-theme="light"] .stat-value,
html[data-theme="light"] .modal-title,
html[data-theme="light"] .table-obj-title { color: #0F172A; }
html[data-theme="light"] .auth-help-box,
html[data-theme="light"] .search-box,
html[data-theme="light"] .table-thumb-box,
html[data-theme="light"] .admin-table th,
html[data-theme="light"] .modal-footer { background: #F8FAFC; border-color: #E2E8F0; }
html[data-theme="light"] .search-input,
html[data-theme="light"] .admin-table td { color: #0F172A; }
html[data-theme="light"] .admin-table th { color: #475569; }
html[data-theme="light"] .admin-table td,
html[data-theme="light"] .table-toolbar,
html[data-theme="light"] .modal-header,
html[data-theme="light"] .modal-footer { border-color: #E2E8F0; }
html[data-theme="light"] .badge-category { background: #F1F5F9; color: #334155; }
html[data-theme="light"] .badge-media { background: #F1F5F9; color: #64748B; }
html[data-theme="light"] .form-section { background: #F8FAFC; border-color: #E2E8F0; }
html[data-theme="light"] .section-legend { color: #334155; }
html[data-theme="light"] .form-input,
html[data-theme="light"] .form-select,
html[data-theme="light"] .form-textarea { background: #FFFFFF; color: #0F172A; border-color: #CBD5E1; }
html[data-theme="light"] .btn-file-upload,
html[data-theme="light"] .btn-close-circle { background: #E2E8F0; color: #334155; border-color: #CBD5E1; }
html[data-theme="light"] .admin-footer { background: #FFFFFF; border-color: #E2E8F0; color: #475569; }

/* ===========================================================================
   Ficha didáctica pública y material QR para el aula
   =========================================================================== */
body.modal-open { overflow: hidden; }

.teacher-resource-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(210px, 280px);
  gap: 28px;
  align-items: center;
  margin: 32px 0;
  padding: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.ficha-kicker {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 8px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(124, 58, 237, 0.12);
  color: var(--color-primary);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.teacher-resource-copy h2 { font-family: 'Montserrat', sans-serif; font-size: 1.35rem; line-height: 1.3; margin-bottom: 8px; }
.teacher-resource-copy > p { color: var(--text-muted); margin-bottom: 12px; }
.ficha-category { display: inline-flex; padding: 3px 9px; border-radius: var(--radius-full); background: var(--bg-surface-alt); color: var(--text-muted); font-size: 0.78rem; font-weight: 700; }
.teacher-resource-qr { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 10px; color: var(--text-muted); font-size: 0.86rem; }

.public-ficha-qr {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
}

.public-ficha-qr canvas,
.public-ficha-qr img { display: block; max-width: 100%; height: auto; }

.ficha-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.public-ficha-dialog .ficha-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.public-ficha-dialog .ficha-actions .btn { justify-content: center; }

.public-ficha-modal { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 16px; }
.public-ficha-backdrop { position: absolute; inset: 0; background: rgba(2, 6, 23, 0.7); backdrop-filter: blur(4px); }
.public-ficha-dialog {
  position: relative;
  width: min(100%, 680px);
  max-height: min(90svh, 720px);
  overflow: auto;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  color: var(--text-main);
  box-shadow: var(--shadow-xl);
}
.public-ficha-dialog h2 { font-family: 'Montserrat', sans-serif; font-size: 1.45rem; line-height: 1.3; margin-bottom: 8px; padding-right: 32px; }
.public-ficha-dialog > p { color: var(--text-muted); }
.public-ficha-close { position: absolute; top: 12px; right: 14px; width: 36px; height: 36px; border: 0; border-radius: 50%; background: var(--bg-surface-alt); color: var(--text-main); cursor: pointer; font-size: 1.5rem; line-height: 1; }
.public-ficha-content { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 240px); align-items: center; gap: 20px; margin-top: 20px; }
.public-ficha-notes { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; color: var(--text-muted); font-size: 0.9rem; }
.public-ficha-notes strong { color: var(--text-main); font-size: 1rem; }

/* ===========================================================================
   Tema oscuro: superficies públicas legibles sin alterar el contraste del visor.
   =========================================================================== */
html[data-theme="dark"] .header-title-bar { background: linear-gradient(180deg, #162237 0%, #111C2E 100%); border-color: var(--border-subtle); }
html[data-theme="dark"] .catalog-hero { background: linear-gradient(180deg, #211143 0%, var(--bg-main) 100%); }
html[data-theme="dark"] .card-preview-hologram { background: radial-gradient(circle at center, #432178 0%, #080D18 80%); }
html[data-theme="dark"] .step-item { background: var(--bg-surface); }
html[data-theme="dark"] .tip-box { background: #3B2A08; border-color: #745B18; color: #FDE68A; }
html[data-theme="dark"] .qr-customizer-card,
html[data-theme="dark"] .qr-code-box { background: var(--bg-surface); border-color: var(--border-subtle); }
html[data-theme="dark"] .qr-scan-hint { color: var(--text-muted); }
html[data-theme="dark"] .error-param { background: #4C1720; color: #FCA5A5; }
html[data-theme="dark"] .auth-card,
html[data-theme="dark"] .modal-content,
html[data-theme="dark"] .table-section { background: var(--bg-surface); color: var(--text-main); border-color: var(--border-subtle); }
html[data-theme="dark"] .form-input,
html[data-theme="dark"] .form-select,
html[data-theme="dark"] .form-textarea { background: var(--bg-main); color: var(--text-main); border-color: var(--border-subtle); }

@media (max-width: 700px) {
  .brand-official-logo { max-width: 148px; }
  .header-nav .theme-toggle { padding: 7px 8px; }
  .header-nav .theme-toggle [data-theme-label] { display: none; }
  .teacher-resource-section { grid-template-columns: 1fr; gap: 20px; padding: 20px; margin: 22px 0; }
  .teacher-resource-qr { order: 2; }
  .public-ficha-dialog { padding: 24px 18px; }
  .public-ficha-content { grid-template-columns: 1fr; }
  .public-ficha-notes { align-items: center; text-align: center; }
  .public-ficha-qr { width: fit-content; margin: 0 auto; }
  .ficha-actions .btn { flex: 1 1 150px; justify-content: center; }
  .public-ficha-dialog .ficha-actions { grid-template-columns: 1fr; }
}

/* ===========================================================================
   Administración mobile-first: cada fila se vuelve una tarjeta legible.
   ========================================================================== */
@media (max-width: 700px) {
  .admin-dashboard-container { padding: 18px 12px 32px; }
  .dashboard-header-section { align-items: stretch; gap: 16px; }
  .dashboard-title { font-size: 1.45rem; }
  .dashboard-subtitle { line-height: 1.5; }
  .dashboard-actions { width: 100%; }
  .dashboard-actions .btn { width: 100%; min-height: 52px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
  .stat-card { padding: 13px; gap: 10px; }
  .stat-icon { width: 38px; height: 38px; flex: 0 0 38px; }
  .stat-value { font-size: 1.35rem; }
  .stat-label { font-size: 0.72rem; line-height: 1.25; }

  .table-section { overflow: visible; }
  .table-toolbar { padding: 14px 12px; flex-direction: column; align-items: stretch; }
  .search-box { max-width: none; min-width: 0; box-sizing: border-box; }
  .filter-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .filter-actions .btn { min-width: 0; min-height: 46px; padding: 8px; font-size: 0.76rem; }
  .table-responsive { overflow: visible; }
  .admin-table, .admin-table tbody, .admin-table tr, .admin-table td { display: block; width: 100%; }
  .admin-table thead { display: none; }
  .admin-table tbody { padding: 8px; box-sizing: border-box; }
  .admin-table tbody tr {
    margin: 0 0 10px;
    padding: 14px;
    border: 1px solid #334155;
    border-radius: var(--radius-md);
    background: #162033;
  }
  .admin-table td {
    padding: 10px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  }
  .admin-table td:first-child { padding-top: 0; }
  .admin-table td:last-child { border-bottom: 0; padding-bottom: 0; }
  .admin-table td:not(:first-child):not(.text-right) {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
  }
  .admin-table td:not(:first-child):not(.text-right)::before {
    content: attr(data-label);
    color: #94A3B8;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }
  .table-object-cell { gap: 10px; }
  .table-thumb-box { width: 40px; height: 40px; flex: 0 0 40px; }
  .action-buttons-group { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .action-buttons-group .btn { width: 100%; min-height: 44px; justify-content: center; }
  .action-buttons-group .btn-danger { grid-column: 1 / -1; }
  .table-empty { text-align: center; }

  .modal-content { width: calc(100% - 16px); max-height: calc(100svh - 16px); }
  .modal-header, .modal-body, .modal-footer { padding-left: 16px; padding-right: 16px; }
  .modal-footer { flex-direction: column-reverse; }
  .modal-footer .btn { width: 100%; min-height: 48px; }
}

/* Encabezado móvil: la identidad ocupa su propia fila y los controles no
   compiten por el mismo ancho. Evita que el selector de tema tape el logo. */
@media (max-width: 700px) {
  .header-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 9px;
    padding: 10px 12px;
  }

  .brand-group,
  .header-container > .brand-link {
    flex: 0 0 auto;
  }

  .brand-official-logo {
    height: 34px;
    max-width: 155px;
  }

  .header-nav {
    display: flex;
    flex: 1 0 100%;
    width: 100%;
    gap: 7px;
    align-items: stretch;
  }

  .header-nav > .btn,
  .header-nav > a.btn {
    flex: 1 1 0;
    min-width: 0;
    min-height: 42px;
    padding: 7px 8px;
    justify-content: center;
    font-size: 0.76rem;
    white-space: nowrap;
  }

  .header-nav > .theme-toggle {
    flex: 0 0 42px;
    padding: 7px;
  }

  .header-nav > .theme-toggle [data-theme-label] { display: none; }

  .admin-nav .admin-user-menu {
    flex: 1 0 100%;
    justify-content: space-between;
    padding: 8px 0 0;
    border-left: 0;
    border-top: 1px solid var(--border-subtle);
  }
}