/**
 * Juego de la vida de Conway y laboratorio de autómatas celulares
 * Estilos canónicos fijate.com (Dark / Light Theme, Canvas responsive, HUD glassmorphism y controles táctiles)
 */

:root {
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Tema oscuro por defecto */
  --bg-app: #0c1017;
  --card-bg: #141a24;
  --card-bg-elevated: #1a2230;
  --card-border: #232d3f;
  --card-border-subtle: #1c2534;
  --text-main: #f0f4fc;
  --text-muted: #8c9bb0;
  --text-dim: #5c6b80;

  /* Colores de acento y estado */
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);
  --primary-light: #34d399;
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --accent-rose: #f43f5e;

  /* Entorno de simulación */
  --canvas-bg: #070a0f;
  --grid-line: rgba(255, 255, 255, 0.04);
  --grid-line-major: rgba(255, 255, 255, 0.09);
  --hud-bg: rgba(15, 23, 37, 0.82);
  --hud-border: rgba(255, 255, 255, 0.1);

  /* Elementos de formulario */
  --input-bg: #0f1520;
  --input-border: #263347;
  --select-arrow-color: #10b981;
}

[data-theme="light"] {
  --bg-app: #f4f6fb;
  --card-bg: #ffffff;
  --card-bg-elevated: #f8fafc;
  --card-border: #e2e8f0;
  --card-border-subtle: #edf2f7;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  --primary: #059669;
  --primary-hover: #047857;
  --primary-glow: rgba(5, 150, 105, 0.2);
  --primary-light: #10b981;

  --canvas-bg: #f8fafc;
  --grid-line: rgba(0, 0, 0, 0.05);
  --grid-line-major: rgba(0, 0, 0, 0.1);
  --hud-bg: rgba(255, 255, 255, 0.88);
  --hud-border: rgba(0, 0, 0, 0.1);

  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --select-arrow-color: #059669;
}

/* Reset y contención de layout canónico */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

.tool-layout {
  max-width: 1240px;
  margin: 1.5rem auto 3.5rem;
  padding: 0 1rem;
  width: 100%;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
}

/* Tarjeta principal */
.card-main {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .card-main {
    padding: 1rem;
    border-radius: 12px;
  }
}

/* Encabezado descriptivo de la tarjeta */
.tool-intro-header {
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tool-intro-titles h2 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.tool-intro-titles p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.badge-engine {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--primary-light);
  font-weight: 600;
}

.badge-engine svg {
  animation: pulse-spin 6s linear infinite;
}

@keyframes pulse-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ==========================================================================
   Contenedor del simulador y Canvas
   ========================================================================== */
.simulator-container {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* Barra de herramientas superior */
.sim-toolbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.sim-toolbar-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Botones principales táctiles */
.btn-sim {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  height: 40px;
  min-height: 40px;
  padding: 0 0.9rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--card-border);
  background: var(--card-bg-elevated);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
}

.btn-sim:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-1px);
}

.btn-sim:active {
  transform: translateY(0);
}

.btn-sim.btn-play {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  min-width: 110px;
  box-shadow: 0 2px 10px var(--primary-glow);
}

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

.btn-sim.btn-play.is-playing {
  background: var(--accent-rose);
  border-color: var(--accent-rose);
  box-shadow: 0 2px 10px rgba(244, 63, 94, 0.3);
}

.btn-sim.btn-play.is-playing:hover {
  background: #e11d48;
}

.btn-sim.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.btn-icon-only {
  width: 40px;
  padding: 0;
}

/* Control deslizante de velocidad */
.speed-control {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  padding: 0 0.75rem;
  height: 40px;
  border-radius: 8px;
}

.speed-control label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

.speed-control input[type="range"] {
  width: 100px;
  accent-color: var(--primary);
  cursor: pointer;
}

.speed-value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  min-width: 46px;
  text-align: right;
}

/* Grupo de botones de modo (Pincel vs Mano) */
.tool-mode-group {
  display: inline-flex;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--input-bg);
}

.tool-mode-group .btn-mode {
  border: none;
  background: transparent;
  color: var(--text-muted);
  height: 40px;
  padding: 0 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tool-mode-group .btn-mode:hover {
  color: var(--text-main);
}

.tool-mode-group .btn-mode.active {
  background: var(--card-bg-elevated);
  color: var(--primary-light);
  font-weight: 600;
}

/* Selector de tamaño de pincel */
.brush-size-group {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 2px 4px;
  height: 40px;
}

.btn-brush-size {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-brush-size.active {
  background: var(--primary);
  color: #ffffff;
}

/* Lienzo interactivo */
.canvas-wrapper {
  position: relative;
  width: 100%;
  height: 600px;
  background: var(--canvas-bg);
  overflow: hidden;
  user-select: none;
  touch-action: none;
}

@media (max-width: 768px) {
  .canvas-wrapper {
    height: 460px;
  }
}

#life-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  display: block;
}

#life-canvas.cursor-grab {
  cursor: grab;
}

#life-canvas.cursor-grabbing {
  cursor: grabbing;
}

#life-canvas.cursor-stamp {
  cursor: copy;
}

/* HUD de telemetría flotante */
.sim-hud {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--hud-bg);
  border: 1px solid var(--hud-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  z-index: 10;
  max-width: 260px;
  transition: opacity 0.2s ease;
}

@media (max-width: 600px) {
  .sim-hud {
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.5rem 0.65rem;
    font-size: 0.75rem;
    max-width: 220px;
  }
}

.hud-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.82rem;
}

.hud-label {
  color: var(--text-muted);
  font-weight: 500;
}

.hud-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-main);
}

.hud-value.highlight {
  color: var(--primary-light);
}

/* Indicador de patrón fantasma en espera de estampar */
.stamp-notice-banner {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(16, 185, 129, 0.92);
  color: #ffffff;
  padding: 0.5rem 1.1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  display: none;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 15;
  pointer-events: auto;
  white-space: nowrap;
}

.stamp-notice-banner.visible {
  display: inline-flex;
}

.stamp-notice-banner button {
  background: rgba(0, 0, 0, 0.25);
  border: none;
  color: #ffffff;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: bold;
}

.stamp-notice-banner button:hover {
  background: rgba(0, 0, 0, 0.45);
}

/* Barra de controles inferior del simulador */
.sim-footer-bar {
  background: var(--card-bg);
  border-top: 1px solid var(--card-border);
  padding: 0.75rem 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
  align-items: center;
}

.form-group-sim {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-group-sim label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: none;
}

/* Desplegables blindados canónicos */
.select-canonical {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--input-bg);
  color: var(--text-main);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.55rem 2.4rem 0.55rem 0.85rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  min-height: 40px;
  height: 40px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2310b981' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 16px;
  transition: border-color 0.18s ease;
}

.select-canonical:hover,
.select-canonical:focus {
  border-color: var(--primary);
  outline: none;
}

.select-canonical option {
  background-color: var(--card-bg);
  color: var(--text-main);
  padding: 0.5rem;
}

/* ==========================================================================
   Catálogo de patrones precargados
   ========================================================================== */
.patterns-section {
  margin-top: 2rem;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.patterns-category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tab-btn {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 500;
  cursor: pointer;
  min-height: 40px;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  border-color: var(--card-border);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
}

/* Cuadrícula de tarjetas de patrones */
.patterns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.pattern-card {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  transition: all 0.18s ease;
}

.pattern-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.pattern-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.pattern-name {
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0 0 0.2rem;
}

.pattern-eng-name {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  display: block;
}

.pattern-badges {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.badge-tag {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  color: var(--primary-light);
  white-space: nowrap;
}

.pattern-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.45;
}

.pattern-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.btn-card-action {
  height: 40px;
  min-height: 40px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-card-action:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn-card-action.btn-stamp {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.btn-card-action.btn-stamp:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

/* ==========================================================================
   Panel de constructor de reglas y herramientas avanzadas
   ========================================================================== */
.advanced-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (max-width: 860px) {
  .advanced-grid {
    grid-template-columns: 1fr;
  }
}

.advanced-card {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
}

.advanced-card h3 {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 0.5rem;
}

.advanced-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0 0 1rem;
}

/* Editor visual de regla B/S */
.rule-builder-group {
  margin-bottom: 0.85rem;
}

.rule-builder-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.rule-digits-row {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 0.25rem;
}

.btn-rule-digit {
  height: 38px;
  border: 1px solid var(--card-border);
  background: var(--input-bg);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.86rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-rule-digit:hover {
  border-color: var(--primary);
  color: var(--text-main);
}

.btn-rule-digit.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.rule-preview-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  margin-top: 0.85rem;
}

.rule-notation-text {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-light);
}

/* Botones de acción avanzada */
.action-buttons-stack {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.btn-advanced {
  width: 100%;
  height: 42px;
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-advanced:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ==========================================================================
   Guía didáctica y divulgativa
   ========================================================================== */
.educational-guide {
  margin-top: 3rem;
  border-top: 1px solid var(--card-border);
  padding-top: 2.5rem;
}

.guide-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.guide-header h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0 0 0.6rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.guide-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0;
}

.guide-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.guide-card {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.guide-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.guide-card h3 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.6rem;
  color: var(--text-main);
}

.guide-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
  margin: 0;
}

/* Lista numerada de axiomas */
.axioms-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.axiom-item {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.axiom-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.9rem;
  background: var(--primary);
  color: #ffffff;
  width: 26px;
  height: 26px;
  min-width: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.axiom-content strong {
  color: var(--text-main);
  display: block;
  font-size: 0.94rem;
  margin-bottom: 0.2rem;
}

.axiom-content p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 0;
}

/* Tabla comparativa de reglas */
.rules-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  margin: 1.5rem 0;
  background: var(--card-bg-elevated);
}

.rules-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.rules-table th {
  background: var(--card-bg);
  color: var(--text-main);
  font-weight: 700;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--card-border);
  font-family: var(--font-title);
}

.rules-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--card-border-subtle);
  color: var(--text-muted);
}

.rules-table tr:last-child td {
  border-bottom: none;
}

.rules-table code {
  font-family: var(--font-mono);
  color: var(--primary-light);
  font-weight: 600;
  background: var(--input-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

/* Acordeón de preguntas frecuentes */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.faq-item {
  background: var(--card-bg-elevated);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
}

.faq-item summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-family: var(--font-title);
  font-size: 1.05rem;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.15s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--primary-light);
  font-weight: 700;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item summary:hover {
  background-color: var(--card-bg);
}

.faq-content {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ==========================================================================
   Modales canónicos accesibles (sin alert)
   ========================================================================== */
.canonical-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.canonical-modal.visible {
  display: flex;
}

.modal-content {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  animation: modal-pop 0.2s ease-out;
}

@keyframes modal-pop {
  0% { transform: scale(0.95); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.btn-modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
}

.btn-modal-close:hover {
  background: var(--card-bg-elevated);
  color: var(--text-main);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--card-bg-elevated);
  border-bottom-left-radius: 14px;
  border-bottom-right-radius: 14px;
}

/* Atajos en modal */
.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
}

.shortcuts-table td {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--card-border-subtle);
}

.shortcuts-table kbd {
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-main);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Textareas en modales de RLE */
.modal-textarea {
  width: 100%;
  height: 160px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  resize: vertical;
  line-height: 1.4;
}

.modal-textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* Toast de notificación rápida */
.life-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--card-bg-elevated);
  border: 1px solid var(--primary);
  color: var(--text-main);
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.life-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Pantalla completa */
.simulator-container:fullscreen {
  border-radius: 0;
  border: none;
  width: 100vw;
  height: 100vh;
}

.simulator-container:fullscreen .canvas-wrapper {
  height: calc(100vh - 120px);
}