/* ==========================================================================
   Simulador de Maqueta de Trenes 3D - Estilos Visuales y Pupitre de Mandos
   Fijate Tools - Tipografías corporativas y adaptación responsive completa
   ========================================================================== */

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

  /* Paleta cromática - Modo Oscuro por defecto */
  --train-bg: #0d1117;
  --train-surface: #161b22;
  --train-border: #30363d;
  --train-accent: #238636;
  --train-accent-hover: #2ea043;
  --train-primary: #1f6feb;
  --train-text: #f0f6fc;
  --train-text-muted: #8b949e;
  --train-gold: #d29922;
  --train-danger: #da3633;
}

[data-theme="light"] {
  --train-bg: #f6f8fa;
  --train-surface: #ffffff;
  --train-border: #d0d7de;
  --train-accent: #1a7f37;
  --train-accent-hover: #2da44e;
  --train-primary: #0969da;
  --train-text: #1f2328;
  --train-text-muted: #656d76;
  --train-gold: #9a6700;
  --train-danger: #cf222e;
}

/* Reglas canónicas obligatorias de maquetación y tipografía */
body {
  font-family: var(--font-main);
  background-color: var(--train-bg);
  color: var(--train-text);
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
}

.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  box-sizing: border-box;
  flex: 1 0 auto;
}

.tool-with-sidebar {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  width: 100%;
}

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

/* Layout y Contenedor Principal */
.train-simulator-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
}

/* Barra superior de herramientas y selectores */
.train-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
}

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

.train-toolbar-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--train-text-muted);
}

.select-control {
  background: var(--train-bg);
  color: var(--train-text);
  border: 1px solid var(--train-border);
  border-radius: 8px;
  padding: 0.45rem 2rem 0.45rem 0.75rem;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 500;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238b949e' stroke-width='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 0.75rem center;
  cursor: pointer;
  min-height: 38px;
}

.select-control:focus {
  outline: none;
  border-color: var(--train-primary);
  box-shadow: 0 0 0 2px rgba(31, 111, 235, 0.25);
}

.select-control option {
  background-color: var(--train-surface);
  color: var(--train-text);
}

/* Barra de construcción y decoración en vivo */
.builder-palette-bar {
  background: var(--train-surface);
  border: 1px solid var(--train-primary);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.builder-palette-title {
  font-size: 0.82rem;
  color: var(--train-text-muted);
}

.builder-palette-title strong {
  color: var(--train-text);
}

.builder-tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.btn-builder-item {
  background: var(--train-bg);
  color: var(--train-text);
  border: 1px solid var(--train-border);
  border-radius: 7px;
  padding: 0.35rem 0.7rem;
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 34px;
  transition: all 0.15s ease;
}

.btn-builder-item:hover {
  border-color: var(--train-primary);
}

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

.btn-builder-item.danger {
  color: var(--train-danger);
  border-color: rgba(218, 54, 51, 0.4);
}

.btn-builder-item.danger.active {
  background: var(--train-danger);
  color: #ffffff;
  border-color: var(--train-danger);
}

/* Panel CTC (Radar de Tráfico y Control de Agujas en vivo) */
.ctc-radar-panel {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  width: 256px;
  background: rgba(13, 17, 23, 0.86);
  border: 1px solid rgba(48, 54, 61, 0.9);
  border-radius: 10px;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  backdrop-filter: blur(8px);
  z-index: 12;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.ctc-panel-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: #e6edf3;
}

.ctc-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2ea043;
  box-shadow: 0 0 8px #2ea043;
  flex-shrink: 0;
}

.ctc-title-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#ctc-radar-canvas {
  position: relative !important;
  width: 100% !important;
  height: 118px !important;
  background: #070b10;
  border: 1px solid #21262d;
  border-radius: 6px;
  cursor: pointer;
  display: block;
}

.ctc-turnouts-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.btn-ctc-turnout {
  flex: 1 1 calc(50% - 0.3rem);
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 5px;
  padding: 0.25rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: #c9d1d9;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem;
  transition: all 0.15s ease;
}

.btn-ctc-turnout:hover {
  border-color: #58a6ff;
}

.btn-ctc-turnout.state-straight {
  border-left: 3px solid #2ea043;
}

.btn-ctc-turnout.state-diverged {
  border-left: 3px solid #d29922;
  background: rgba(210, 153, 34, 0.14);
  color: #f0f6fc;
}

/* Marco de parabrisas en Cabina 1.ª persona */
.cab-windshield-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 8;
  border-top: 28px solid rgba(15, 18, 22, 0.92);
  border-left: 22px solid rgba(18, 22, 26, 0.88);
  border-right: 22px solid rgba(18, 22, 26, 0.88);
  border-bottom: 14px solid rgba(15, 18, 22, 0.92);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.65);
}

.cab-top-visor {
  position: absolute;
  top: -23px;
  right: 4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #8b949e;
}

/* Botón de Piloto Automático en Velocímetro */
.btn-cruise-control {
  margin-top: 0.45rem;
  width: 100%;
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 6px;
  padding: 0.32rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--train-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-cruise-control:hover {
  border-color: var(--train-primary);
  color: var(--train-text);
}

.btn-cruise-control.active {
  background: rgba(35, 134, 54, 0.22);
  border-color: var(--train-accent);
  color: #3fb950;
}

.btn-action-tool {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  background: var(--train-bg);
  color: var(--train-text);
  border: 1px solid var(--train-border);
  border-radius: 8px;
  padding: 0.45rem 0.85rem;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 38px;
  transition: all 0.15s ease;
}

.btn-action-tool:hover {
  background: var(--train-border);
}

.btn-action-tool.primary {
  background: var(--train-accent);
  color: #ffffff;
  border-color: var(--train-accent);
}

.btn-action-tool.primary:hover {
  background: var(--train-accent-hover);
}

.btn-action-tool.danger {
  background: transparent;
  color: var(--train-danger);
  border-color: var(--train-danger);
}

.btn-action-tool.danger:hover {
  background: var(--train-danger);
  color: #ffffff;
}

/* Viewport 3D Three.js */
.train-viewport-container {
  position: relative;
  width: 100%;
  height: 540px;
  background: #0d1117;
  border: 1px solid var(--train-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
}

.train-viewport-container:fullscreen {
  border-radius: 0;
  border: none;
  height: 100vh;
}

.train-viewport-container canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  display: block;
}

/* Controles flotantes en el viewport */
.viewport-overlay-controls {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 10;
}

.btn-overlay-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(22, 27, 34, 0.85);
  border: 1px solid var(--train-border);
  border-radius: 8px;
  color: var(--train-text);
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: background 0.15s ease;
}

.btn-overlay-icon:hover {
  background: rgba(33, 38, 45, 0.95);
}

/* Pupitre de mandos del maquinista (HUD) */
.train-control-desk {
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: grid;
  grid-template-columns: 220px 1fr 1fr 200px;
  gap: 1.25rem;
  align-items: center;
}

/* 1. Módulo Velocímetro */
.desk-speedometer-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 10px;
  padding: 1rem;
}

.analog-gauge {
  position: relative;
  width: 176px;
  height: 102px;
  overflow: visible;
  margin-bottom: 0.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gauge-svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.digital-speed {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--train-text);
  letter-spacing: -0.5px;
}

.speed-unit {
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--train-text-muted);
}

/* 2. Módulos Acelerador y Freno */
.desk-slider-module {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 10px;
  padding: 1rem;
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.module-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--train-text);
}

.module-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--train-gold);
}

.desk-range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--train-border);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
}

.desk-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--train-accent);
  border: 2px solid #ffffff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

.desk-range-slider.brake-slider::-webkit-slider-thumb {
  background: var(--train-danger);
}

/* 3. Inversor de marcha y accionadores táctiles */
.desk-action-module {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 10px;
  padding: 1rem;
}

.reverser-btn-group {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.35rem;
}

.btn-reverser {
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  color: var(--train-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 6px;
  padding: 0.4rem 0.2rem;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 34px;
}

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

.btn-tactile-action {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 8px;
  padding: 0.55rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--train-text);
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease;
  min-height: 42px;
}

.btn-tactile-action:active,
.btn-tactile-action.pressing {
  transform: scale(0.96);
  background: var(--train-gold);
  color: #111111;
  border-color: var(--train-gold);
}

.btn-tactile-action.switch-btn:active {
  background: var(--train-accent);
  color: #ffffff;
  border-color: var(--train-accent);
}

/* Banner flotante de aviso de descarrilamiento y encarrilamiento inmediato */
.derail-alert-banner {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: 90%;
  max-width: 580px;
  background: rgba(13, 17, 23, 0.96);
  border: 1.5px solid #f85149;
  border-radius: 12px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.75), 0 0 20px rgba(248, 81, 73, 0.25);
  backdrop-filter: blur(10px);
  animation: derailAlertPop 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes derailAlertPop {
  0% { opacity: 0; transform: translate(-50%, 16px) scale(0.96); }
  100% { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

.derail-alert-content {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.derail-alert-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.derail-alert-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.derail-alert-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: #ff7b72;
}

.derail-alert-desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--train-text-muted);
}

.derail-alert-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.25rem;
}

.btn-rerail-train {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #238636;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 8px;
  padding: 0.6rem 1.15rem;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(35, 134, 54, 0.45);
  transition: all 0.15s ease;
}

.btn-rerail-train:hover {
  background: #2ea043;
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(35, 134, 54, 0.6);
}

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

/* Indicador de estabilidad lateral del convoy */
.stability-gauge-box {
  width: 100%;
  margin: 0.4rem 0 0.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stability-gauge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  font-family: var(--font-mono);
}

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

.stability-val {
  font-weight: 700;
  color: #2ea043;
}

.stability-bar-track {
  width: 100%;
  height: 6px;
  background: #21262d;
  border-radius: 3px;
  overflow: hidden;
}

.stability-bar-fill {
  height: 100%;
  width: 100%;
  background: #2ea043;
  border-radius: 3px;
  transition: width 0.15s ease, background-color 0.2s ease;
}

/* Botón de reinicio de tren */
.btn-tactile-action.reset-btn {
  border-color: rgba(56, 139, 253, 0.45);
}

.btn-tactile-action.reset-btn:hover {
  border-color: #58a6ff;
  color: #58a6ff;
}

.btn-tactile-action.reset-btn:active {
  background: #1f6feb;
  color: #ffffff;
  border-color: #1f6feb;
}

/* Guía de atajos para el maquinista */
.shortcuts-legend-card {
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--train-text-muted);
}

.key-kbd {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--train-text);
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 4px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
}

/* Notificación flotante (toast) */
.train-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: rgba(22, 27, 34, 0.92);
  color: #ffffff;
  border: 1px solid var(--train-border);
  border-radius: 8px;
  padding: 0.65rem 1.2rem;
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  pointer-events: none;
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
  z-index: 9999;
}

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

/* Modales accesibles */
.train-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.train-modal.visible {
  opacity: 1;
  pointer-events: auto;
}

.train-modal-card {
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  overflow-y: auto;
}

.train-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--train-border);
  padding-bottom: 0.75rem;
}

.train-modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  color: var(--train-text);
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--train-text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  min-height: 40px;
}

.btn-close-modal:hover {
  color: var(--train-text);
  background: var(--train-border);
}

/* Lista de maquetas guardadas */
.layouts-list-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.layout-card {
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.15s ease;
}

.layout-card.current {
  border-color: var(--train-primary);
  box-shadow: 0 0 0 1px var(--train-primary);
}

.layout-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layout-card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--train-text);
}

.badge-builtin {
  font-family: var(--font-main);
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(31, 111, 235, 0.2);
  color: var(--train-primary);
  border-radius: 4px;
  padding: 0.2rem 0.45rem;
}

.badge-custom {
  font-family: var(--font-main);
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(35, 134, 54, 0.2);
  color: var(--train-accent);
  border-radius: 4px;
  padding: 0.2rem 0.45rem;
}

.layout-card-desc {
  font-size: 0.85rem;
  color: var(--train-text-muted);
  margin: 0;
  line-height: 1.4;
}

.layout-card-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 0.25rem;
}

.form-group-train {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group-train label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--train-text);
}

.form-input-text {
  width: 100%;
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  color: var(--train-text);
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  font-family: var(--font-main);
  font-size: 0.9rem;
  box-sizing: border-box;
  min-height: 40px;
}

.form-input-text:focus {
  outline: none;
  border-color: var(--train-primary);
}

/* Galería visual de redes y maquetas maestras */
.train-modal-card.modal-card-wide {
  max-width: 980px;
}

.demos-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.demo-card {
  background: var(--train-bg);
  border: 1px solid var(--train-border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.demo-card:hover {
  transform: translateY(-2px);
  border-color: var(--train-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.demo-card.active-layout {
  border-color: var(--train-accent);
  box-shadow: 0 0 0 1px var(--train-accent);
}

.demo-card-schematic {
  width: 100%;
  height: 120px;
  background: #090d13;
  border-bottom: 1px solid var(--train-border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.demo-card-schematic svg {
  width: 90%;
  height: 85%;
}

.demo-card-content {
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1 1 auto;
}

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

.demo-card-title-box {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.demo-flag-region {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--train-text-muted);
  letter-spacing: 0.3px;
}

.demo-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: var(--train-text);
  line-height: 1.3;
}

.demo-badge-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(31, 111, 235, 0.15);
  color: var(--train-primary);
  border: 1px solid rgba(31, 111, 235, 0.3);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
  white-space: nowrap;
}

.demo-card-desc {
  font-size: 0.85rem;
  color: var(--train-text-muted);
  line-height: 1.45;
  margin: 0;
}

.demo-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background: var(--train-surface);
  border: 1px solid var(--train-border);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
}

.demo-spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.demo-spec-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--train-text-muted);
}

.demo-spec-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--train-text);
}

.demo-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
}

/* Adaptación responsive */
@media (max-width: 1024px) {
  .train-control-desk {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
}

@media (max-width: 640px) {
  .demos-gallery-grid {
    grid-template-columns: 1fr;
  }

  .demo-specs-grid {
    grid-template-columns: 1fr;
  }

  .train-viewport-container {
    height: 400px;
  }

  .ctc-radar-panel {
    width: 196px;
    padding: 0.45rem;
    top: 0.5rem;
    left: 0.5rem;
  }

  #ctc-radar-canvas {
    height: 92px !important;
  }

  .train-control-desk {
    grid-template-columns: 1fr;
    gap: 0.85rem;
    padding: 1rem;
  }

  .train-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .train-toolbar-group {
    justify-content: space-between;
  }

  .btn-action-tool {
    flex: 1 1 auto;
  }
}

/* ============================================================
   ESTILOS PREMIUM PARA COMPONENTE DE FAQS Y ACORDEÓN TÉCNICO
   ============================================================ */
.seo-accordion-group {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 1.75rem;
}

.seo-accordion-item {
  background: var(--train-panel-bg, #111726);
  border: 1px solid var(--train-border, rgba(56, 189, 248, 0.16));
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}

[data-theme="light"] .seo-accordion-item {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.seo-accordion-item:hover {
  border-color: rgba(56, 189, 248, 0.35);
}

[data-theme="light"] .seo-accordion-item:hover {
  border-color: #cbd5e1;
}

.seo-accordion-item[open] {
  border-color: #0284c7;
  box-shadow: 0 8px 24px -6px rgba(2, 132, 199, 0.2);
  background: var(--train-panel-bg, #0f1523);
}

[data-theme="light"] .seo-accordion-item[open] {
  border-color: #0284c7;
  box-shadow: 0 8px 24px -6px rgba(2, 132, 199, 0.12);
  background: #ffffff;
}

.seo-accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.4rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--train-text, #f8fafc);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: color 0.2s ease;
}

[data-theme="light"] .seo-accordion-trigger {
  color: #0f172a;
}

.seo-accordion-trigger::-webkit-details-marker,
.seo-accordion-trigger::marker {
  display: none !important;
}

.seo-accordion-trigger:hover {
  color: #38bdf8;
}

[data-theme="light"] .seo-accordion-trigger:hover {
  color: #0284c7;
}

.seo-accordion-icon {
  width: 20px;
  height: 20px;
  stroke: #38bdf8;
  flex-shrink: 0;
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), stroke 0.2s ease;
}

[data-theme="light"] .seo-accordion-icon {
  stroke: #0284c7;
}

.seo-accordion-item[open] .seo-accordion-icon {
  transform: rotate(180deg);
  stroke: #38bdf8;
}

[data-theme="light"] .seo-accordion-item[open] .seo-accordion-icon {
  stroke: #0284c7;
}

.seo-accordion-content {
  padding: 0.2rem 1.4rem 1.35rem 1.4rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  line-height: 1.68;
  color: var(--train-muted, #94a3b8);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 0.2rem;
  padding-top: 1rem;
}

[data-theme="light"] .seo-accordion-content {
  color: #475569;
  border-top-color: #f1f5f9;
}

.seo-accordion-content p {
  margin: 0 0 0.85rem 0;
}

.seo-accordion-content p:last-child {
  margin-bottom: 0;
}

.seo-accordion-content strong {
  color: var(--train-text, #f8fafc);
  font-weight: 600;
}

[data-theme="light"] .seo-accordion-content strong {
  color: #0f172a;
}

.seo-accordion-content ul {
  margin: 0.6rem 0 0.85rem 0;
  padding-left: 1.35rem;
}

.seo-accordion-content li {
  margin-bottom: 0.35rem;
}