/* ==========================================================================
   Calculadora de Gasto Real Anual de Tener un Perro o Gato - Estilos Canónicos
   ========================================================================== */

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

  /* Colores Corporativos Tema Claro */
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #10b981;

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --color-primary: #10b981;
  --color-primary-hover: #059669;
  --color-primary-light: rgba(16, 185, 129, 0.1);
  --color-primary-border: rgba(16, 185, 129, 0.25);

  --color-accent: #0284c7;
  --color-accent-light: rgba(2, 132, 199, 0.1);

  --color-warning: #f59e0b;
  --color-warning-light: rgba(245, 158, 11, 0.12);
  --color-danger: #ef4444;
  --color-danger-light: rgba(239, 68, 68, 0.1);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #0b0f17;
  --bg-surface: #131b26;
  --bg-surface-elevated: #1a2332;
  --bg-subtle: #1c2738;
  --border-color: #27354a;
  --border-focus: #10b981;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --color-primary: #10b981;
  --color-primary-hover: #34d399;
  --color-primary-light: rgba(16, 185, 129, 0.18);
  --color-primary-border: rgba(16, 185, 129, 0.35);

  --color-accent: #38bdf8;
  --color-accent-light: rgba(56, 189, 248, 0.15);

  --color-warning: #fbbf24;
  --color-warning-light: rgba(251, 191, 36, 0.15);
  --color-danger: #f87171;
  --color-danger-light: rgba(248, 113, 113, 0.15);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

/* Layout Canónico */
.tool-layout {
  max-width: 1200px;
  width: 100%;
  margin: 1.25rem auto 3rem;
  padding: 0 1rem;
}

.tool-with-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 1536px) {
  .tool-with-sidebar {
    grid-template-columns: 1fr 300px;
    align-items: start;
  }
}

.tool-main-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

/* Sticky Sidebar Publicitaria */
.tool-ad-sidebar {
  display: none;
}

@media (min-width: 1536px) {
  .tool-ad-sidebar {
    display: block;
    position: sticky;
    top: 5rem;
    width: 300px;
    min-width: 300px;
  }

  .ad-sidebar-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
  }

  .ad-sidebar-card .ad-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
  }
}

/* Top Banner Publicitario */
.tools-ad-banner-section {
  width: 100%;
  margin: 0 0 1rem;
}

.ad-banner-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.ad-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.35rem;
}

/* Hero Box */
.tool-hero-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.tool-hero-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
}

.tool-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.badge-pill.pill-accent {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary-border);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 1.85rem;
  }
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 950px;
}

/* Contenedor Principal de Dos Columnas (Configuración y Resultados) */
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 1024px) {
  .calculator-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

/* Tarjetas de Sección */
.card-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .card-section {
    padding: 1.5rem;
  }
}

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

.section-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.step-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
}

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

/* Selector de Especies (Tabs Perro / Gato) */
.species-tab-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.btn-species {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 48px;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-color);
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-species.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-species svg {
  flex-shrink: 0;
}

/* Cuadrícula de Presets de Tamaño */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.65rem;
}

@media (min-width: 640px) {
  .presets-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.preset-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.75rem 0.65rem;
  min-height: 76px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.preset-chip:hover {
  border-color: var(--color-primary);
  background: var(--bg-subtle);
}

.preset-chip.active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.preset-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.preset-chip.active .preset-name {
  color: var(--color-primary);
}

.preset-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  line-height: 1.2;
}

/* Campos de Formulario Responsivos */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-help {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: normal;
}

.form-row-dual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .form-row-dual {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.input-with-suffix {
  display: flex;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0 0.75rem;
  height: 42px;
  transition: var(--transition);
}

.input-with-suffix:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  background: var(--bg-surface);
}

.input-with-suffix input[type="number"],
.input-with-suffix input[type="text"] {
  flex: 1 1 0%;
  width: 0;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
}

.input-suffix {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Slider Numérico Táctil */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

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

.slider-val-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 4px;
  background: var(--border-color);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid #ffffff;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Desplegables con Regla Canónica */
.select-wrapper {
  position: relative;
  width: 100%;
}

.custom-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 42px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  padding: 0 40px 0 0.85rem;
  background-color: var(--bg-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 500;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: var(--transition);
}

.custom-select:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.select-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
}

/* Switch Toggles */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.85rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  gap: 0.75rem;
  cursor: pointer;
}

.toggle-label-wrap {
  display: flex;
  flex-direction: column;
}

.toggle-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.toggle-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

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

.slider-switch {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: var(--transition);
  border-radius: 24px;
}

.slider-switch::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: var(--transition);
  border-radius: 50%;
}

input:checked + .slider-switch {
  background-color: var(--color-primary);
}

input:checked + .slider-switch::before {
  transform: translateX(20px);
}

/* ==========================================================================
   Columna Derecha: Cockpit de Resultados
   ========================================================================== */

.results-cockpit {
  position: sticky;
  top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Tarjeta Principal de KPIs */
.kpi-summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}

.kpi-summary-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.kpi-main-block {
  text-align: center;
}

.kpi-main-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.kpi-main-amount {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.2rem;
}

.kpi-currency {
  font-size: 1.6rem;
  color: var(--color-primary);
}

.kpi-period {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Conmutador Mensual / Anual */
.period-switch-group {
  display: flex;
  background: var(--bg-subtle);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  gap: 0.25rem;
}

.btn-period-toggle {
  flex: 1;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-period-toggle.active {
  background: var(--bg-surface);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

/* Tarjetas Secundarias de KPI */
.kpi-secondary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.kpi-sub-card {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.kpi-sub-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.kpi-sub-val {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.kpi-sub-desc {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* Gráfico Visual Donut SVG */
.chart-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.chart-header {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chart-donut-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 480px) {
  .chart-donut-wrap {
    flex-direction: row;
    justify-content: space-between;
  }
}

.svg-donut-container {
  width: 140px;
  height: 140px;
  position: relative;
  flex-shrink: 0;
}

.svg-donut-container svg {
  transform: rotate(-90deg);
  border-radius: 50%;
}

.donut-center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.donut-center-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.donut-center-label {
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* Leyenda del gráfico */
.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  width: 100%;
}

.legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
}

.legend-left {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-right {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

/* Desglose en Lista Detallada */
.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.breakdown-table th {
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.5rem 0.5rem 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.breakdown-table td {
  padding: 0.65rem 0.5rem 0.65rem 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

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

.table-num {
  text-align: right;
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Botones Principales de Acción */
.btn-action-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 44px;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 4px rgba(16, 185, 129, 0.25);
}

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

.btn-action-outline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 42px;
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-action-outline:hover {
  background: var(--bg-subtle);
  border-color: var(--text-muted);
}

/* ==========================================================================
   Simulador de Imprevistos Veterinarios
   ========================================================================== */

.emergency-simulator-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.emergency-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.emergency-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.emergency-select-wrap {
  margin-top: 0.25rem;
}

.emergency-card-result {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.emergency-cost-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.emergency-cost-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-danger);
}

.emergency-coverage-box {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--border-color);
}

.coverage-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.coverage-status-tag.ok {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.coverage-status-tag.alert {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

/* ==========================================================================
   Acordeón SEO y Guía Informativa
   ========================================================================== */

.info-guide-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.guide-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.guide-content p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  background: transparent;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.faq-trigger:hover {
  background: var(--bg-subtle);
}

.faq-trigger svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item.open .faq-trigger svg {
  transform: rotate(180deg);
}

.faq-content {
  display: none;
  padding: 0 1rem 1rem 1rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  border-top: 1px solid var(--border-color);
  background: var(--bg-subtle);
}

.faq-item.open .faq-content {
  display: block;
}

/* ==========================================================================
   Modales Accesibles (Sin alert())
   ========================================================================== */

.modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: modalPop 0.2s ease-out;
}

@keyframes modalPop {
  from {
    transform: scale(0.94);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

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

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

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

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

/* Hoja de impresión para ficha técnica exportada */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  .app-header,
  .tools-ad-banner-section,
  .tool-ad-sidebar,
  .btn-action-primary,
  .btn-action-outline,
  .faq-accordion,
  .fijate-footer,
  .affiliate-section,
  .related-tools-section,
  .modal-backdrop {
    display: none !important;
  }

  .tool-layout {
    margin: 0 !important;
    padding: 0 !important;
    max-width: 100% !important;
  }

  .calculator-grid {
    grid-template-columns: 1fr !important;
  }

  .card-section, .kpi-summary-card, .chart-card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    break-inside: avoid;
  }
}