/**
 * Enciclopedia interactiva Nikola Tesla - Hojas de estilo
 * Fijate.com
 */

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

  /* Colores tema oscuro (por defecto) */
  --bg-page: #0b0f17;
  --bg-card: #111827;
  --bg-card-subtle: #172033;
  --bg-input: #1f2937;
  --border-color: #1f293d;
  --border-focus: #00d2ff;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Acentos eléctricos de Tesla */
  --accent-cyan: #00d2ff;
  --accent-cyan-glow: rgba(0, 210, 255, 0.25);
  --accent-amber: #ffb800;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
}

[data-theme="light"] {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #0284c7;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --accent-cyan: #0284c7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.15);
  --accent-amber: #d97706;
  --accent-purple: #9333ea;
  --accent-emerald: #059669;
  --accent-rose: #e11d48;
}

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

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

.text-mono {
  font-family: var(--font-mono);
}

/* Contención y layout canónico */
.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3.5rem;
  padding: 0 1rem;
  box-sizing: border-box;
  flex: 1 0 auto;
  width: 100%;
}

.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%;
}

/* 1. Tarjeta principal del contenido */
.card-main {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.75rem;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.15);
  margin-bottom: 2rem;
}

@media (max-width: 640px) {
  .card-main {
    padding: 1.25rem 1rem;
    border-radius: 0.75rem;
  }
}

/* 2. Hero y cabecera temática de la herramienta */
.tesla-hero {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-color);
}

.tesla-hero-top {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.tesla-avatar-badge {
  width: 64px;
  height: 64px;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(168, 85, 247, 0.25));
  border: 1px solid rgba(0, 210, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  flex-shrink: 0;
  box-shadow: 0 0 15px var(--accent-cyan-glow);
}

.tesla-hero-info h2 {
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
}

.tesla-hero-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

/* KPI Summary Strip */
.kpi-summary-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 0.85rem 1rem;
}

.kpi-cell {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.kpi-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  font-weight: 600;
}

.kpi-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

/* 3. Pestañas de navegación de vistas */
.tool-view-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-color);
  -webkit-overflow-scrolling: touch;
}

.tool-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.15rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0.6rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  min-height: 42px;
}

.tool-nav-btn:hover {
  color: var(--text-main);
  background-color: var(--bg-card-subtle);
}

.tool-nav-btn.active {
  color: var(--accent-cyan);
  background-color: var(--accent-cyan-glow);
  border-color: rgba(0, 210, 255, 0.35);
}

/* Paneles de vista */
.tab-panel-view {
  display: none;
}

.tab-panel-view.active {
  display: block;
}

/* 4. Filtros y barras de búsqueda */
.filter-search-bar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1.5rem;
}

.search-input-wrap {
  flex: 1 1 240px;
  position: relative;
  min-width: 0;
}

.search-input-wrap svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

.search-input-wrap input {
  width: 100%;
  padding: 0.65rem 0.85rem 0.65rem 2.4rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
  min-height: 42px;
  outline: none;
  transition: border-color 0.2s;
}

.search-input-wrap input:focus {
  border-color: var(--border-focus);
}

.select-filter-wrap {
  flex: 0 1 220px;
  min-width: 180px;
}

.select-filter-wrap select {
  width: 100%;
  max-width: 100%;
  padding: 0.65rem 2.2rem 0.65rem 0.85rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
  min-height: 42px;
  outline: none;
  cursor: pointer;
  appearance: none;
  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='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

.select-filter-wrap select:focus {
  border-color: var(--border-focus);
}

/* 5. Cronología interactiva */
.timeline-track {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  padding-left: 1.5rem;
  border-left: 2px solid var(--border-color);
  margin-left: 0.5rem;
}

.timeline-card {
  position: relative;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem 1.4rem;
  transition: transform 0.2s, border-color 0.2s;
}

.timeline-card::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 1.5rem;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  border: 3px solid var(--bg-card);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.timeline-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  transform: translateX(3px);
}

.timeline-badge-year {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.4rem;
}

.timeline-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.timeline-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 0.4rem;
  background-color: var(--accent-cyan-glow);
  color: var(--accent-cyan);
  font-weight: 600;
}

.timeline-loc {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.timeline-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.timeline-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.timeline-highlight {
  font-size: 0.85rem;
  background-color: rgba(0, 0, 0, 0.15);
  border-left: 3px solid var(--accent-amber);
  padding: 0.4rem 0.75rem;
  border-radius: 0 0.4rem 0.4rem 0;
  margin-bottom: 0.85rem;
  color: var(--text-main);
}

.highlight-label {
  font-weight: 700;
  color: var(--accent-amber);
}

.btn-more-bio, .btn-patent-detail {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.35rem 0;
  transition: gap 0.2s;
}

.btn-more-bio:hover, .btn-patent-detail:hover {
  gap: 0.65rem;
}

/* 6. Catálogo de patentes */
.patents-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.25rem;
}

.patent-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s, border-color 0.2s;
}

.patent-card:hover {
  border-color: rgba(0, 210, 255, 0.4);
  transform: translateY(-2px);
}

.patent-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.patent-cat-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 0.35rem;
  background-color: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
}

.patent-year {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.patent-number {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.4rem;
}

.patent-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.6rem;
  color: var(--text-main);
}

.patent-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.patent-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.patent-importance {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 600;
}

.patent-importance.critical {
  color: var(--accent-amber);
}

/* 7. Laboratorio y simuladores */
.lab-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.lab-subnav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  padding: 0.35rem;
}

.lab-subnav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  background: transparent;
  border: none;
  border-radius: 0.45rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 38px;
}

.lab-subnav-btn:hover {
  color: var(--text-main);
}

.lab-subnav-btn.active {
  background-color: var(--bg-card);
  color: var(--accent-cyan);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.lab-sim-panel {
  display: none;
}

.lab-sim-panel.active {
  display: block;
}

/* Simulador Canvas Wrapper */
.sim-canvas-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sim-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.sim-title-group h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.sim-title-group p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.canvas-viewport-box {
  width: 100%;
  border-radius: 0.6rem;
  overflow: hidden;
  background-color: #070b13;
  border: 1px solid var(--border-color);
  position: relative;
}

.canvas-viewport-box canvas {
  display: block;
  width: 100%;
  height: 400px;
}

.canvas-viewport-box.valve-box canvas {
  height: 300px;
}

/* Panel de controles del simulador */
.sim-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  padding: 1rem;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.control-val {
  color: var(--accent-cyan);
  font-weight: 700;
}

.control-item input[type="range"] {
  width: 100%;
  accent-color: var(--accent-cyan);
  cursor: pointer;
  height: 6px;
}

.control-item select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 0.45rem;
  color: var(--text-main);
  font-size: 0.85rem;
  min-height: 38px;
}

.sim-action-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-electric-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 40px;
}

.btn-electric-action:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-electric-action.active {
  background-color: var(--accent-cyan-glow);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Estilos de Guerra de las Corrientes */
.war-comparison-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .war-comparison-card {
    grid-template-columns: 1fr;
  }
}

.war-column {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.war-column.ac {
  border-top: 4px solid var(--accent-cyan);
}

.war-column.dc {
  border-top: 4px solid var(--accent-amber);
}

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

.war-col-header h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
}

.war-loss-bar-container {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.war-bar-track {
  width: 100%;
  height: 12px;
  background-color: var(--bg-card-subtle);
  border-radius: 6px;
  overflow: hidden;
}

.war-bar-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.3s ease;
}

.war-bar-fill.ac-fill {
  background-color: var(--accent-cyan);
}

.war-bar-fill.dc-fill {
  background-color: var(--accent-amber);
}

.war-kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  background-color: var(--bg-card-subtle);
  padding: 0.85rem;
  border-radius: 0.5rem;
}

.war-kpi-item {
  display: flex;
  flex-direction: column;
}

.war-verdict-box {
  background-color: rgba(0, 210, 255, 0.08);
  border-left: 3px solid var(--accent-cyan);
  padding: 1rem;
  border-radius: 0 0.5rem 0.5rem 0;
  font-size: 0.92rem;
  line-height: 1.55;
  margin-top: 1rem;
}

/* 8. Mitos vs Realidades */
.myths-filter-pills {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.myth-filter-btn {
  padding: 0.45rem 1rem;
  border-radius: 2rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 36px;
}

.myth-filter-btn:hover {
  color: var(--text-main);
}

.myth-filter-btn.active {
  background-color: var(--accent-cyan-glow);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.myths-grid-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.myth-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.myth-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.myth-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.65rem;
  border-radius: 1rem;
}

.myth-badge.myth {
  background-color: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
}

.myth-badge.half {
  background-color: rgba(255, 184, 0, 0.15);
  color: var(--accent-amber);
}

.myth-badge.truth {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.myth-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.myth-box {
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  font-size: 0.9rem;
  line-height: 1.55;
}

.myth-box-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.myth-popular {
  background-color: rgba(244, 63, 94, 0.08);
  border-left: 3px solid var(--accent-rose);
  color: var(--text-muted);
}

.myth-popular .myth-box-title {
  color: var(--accent-rose);
}

.myth-scientific {
  background-color: rgba(16, 185, 129, 0.08);
  border-left: 3px solid var(--accent-emerald);
  color: var(--text-main);
}

.myth-scientific .myth-box-title {
  color: var(--accent-emerald);
}

/* 9. Citas célebres */
.quotes-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.quote-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.quote-symbol {
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: rgba(0, 210, 255, 0.25);
  margin-bottom: -0.5rem;
}

.quote-text {
  font-size: 1rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.quote-context {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.quote-author {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* 10. Modales interactivos accesibles */
.tesla-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.tesla-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.tesla-modal-dialog {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  max-width: 620px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.tesla-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

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

.modal-header-titles span {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, background-color 0.2s;
}

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

.tesla-modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal-section-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.4rem;
}

.highlight-box {
  background-color: rgba(0, 210, 255, 0.08);
  border-left: 3px solid var(--accent-cyan);
  padding: 0.85rem 1rem;
  border-radius: 0 0.5rem 0.5rem 0;
}

.empty-state-card {
  background-color: var(--bg-card-subtle);
  border: 1px dashed var(--border-color);
  border-radius: 0.75rem;
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-muted);
}

/* 11. Acordeón FAQ accesible */
.faq-section {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-color);
}

.faq-section-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.active {
  border-color: rgba(0, 210, 255, 0.35);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  gap: 1rem;
}

.faq-icon {
  transition: transform 0.25s ease;
  flex-shrink: 0;
  color: var(--text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.faq-answer {
  display: none;
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  display: block;
}