/**
 * Fijate Tools - Buscador de códigos de error de electrodomésticos y calderas
 * Estilos canónicos, variables corporativas, tema claro/oscuro y responsive
 */

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

  /* Paleta base clara */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;

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

  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;

  /* Semáforos de gravedad */
  --safe-bg: #ecfdf5;
  --safe-text: #065f46;
  --safe-border: #a7f3d0;
  --safe-dot: #10b981;

  --warn-bg: #fffbeb;
  --warn-text: #92400e;
  --warn-border: #fde68a;
  --warn-dot: #f59e0b;

  --danger-bg: #fef2f2;
  --danger-text: #991b1b;
  --danger-border: #fecaca;
  --danger-dot: #ef4444;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12);
}

/* Modo oscuro universal (Lección canónica 575) */
[data-theme="dark"] {
  --bg-page: #0b0f17;
  --bg-card: #151d2c;
  --bg-card-subtle: #1c2638;
  --bg-input: #111827;
  --border-color: #27354a;
  --border-focus: #60a5fa;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --primary-color: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: rgba(59, 130, 246, 0.15);

  --safe-bg: rgba(16, 185, 129, 0.15);
  --safe-text: #34d399;
  --safe-border: rgba(16, 185, 129, 0.35);

  --warn-bg: rgba(245, 158, 11, 0.15);
  --warn-text: #fbbf24;
  --warn-border: rgba(245, 158, 11, 0.35);

  --danger-bg: rgba(239, 68, 68, 0.15);
  --danger-text: #f87171;
  --danger-border: rgba(239, 68, 68, 0.35);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.6);
}

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

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

.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%;
}

/* Tarjeta de bienvenida y KPIs analíticos */
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.75rem 1.5rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.hero-header {
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.025em;
  color: var(--text-main);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* KPIs de catálogo */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Pestañas de modo */
.mode-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  background: var(--bg-card-subtle);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.mode-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 42px;
}

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

.mode-tab-btn.active {
  background: var(--bg-card);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

/* Caja de búsqueda y controles */
.search-controls-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 1.25rem;
}

.search-icon {
  position: absolute;
  left: 1.1rem;
  color: var(--text-subtle);
  pointer-events: none;
}

.main-search-input {
  width: 100%;
  height: 52px;
  padding: 0 3.25rem 0 3.1rem;
  font-family: var(--font-main);
  font-size: 1.1rem;
  color: var(--text-main);
  background-color: var(--bg-input);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.main-search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.btn-clear-search {
  position: absolute;
  right: 0.75rem;
  width: 32px;
  height: 32px;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--bg-card-subtle);
  border: none;
  border-radius: 50%;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  transition: background-color 0.2s;
}

.btn-clear-search:hover {
  background: var(--border-color);
  color: var(--text-main);
}

/* Chips de acceso rápido */
.quick-chips-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.chips-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-right: 0.25rem;
}

.quick-chip {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
}

.quick-chip:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Filtros facetados */
.filters-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.filter-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Pills de electrodoméstico */
.appliance-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.appliance-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 40px;
}

.appliance-pill:hover {
  background: var(--border-color);
  color: var(--text-main);
}

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

/* Desplegables con reglas de estilo estrictas (Regla 5) */
.custom-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 42px;
  padding: 0 40px 0 0.85rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  color: var(--text-main);
  background-color: var(--bg-input);
  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='%2364748b' 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 12px center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
}

.custom-select:focus {
  outline: none;
  border-color: var(--border-focus);
}

.custom-select option {
  background-color: var(--bg-card);
  color: var(--text-main);
  padding: 8px;
}

/* Barra de resultados y recuento */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

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

.results-counter {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Parrilla de tarjetas de códigos */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.error-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.error-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-focus);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card-brand-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card-appliance-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: capitalize;
}

.card-brand-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Badges de severidad */
.badge-severity {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-safe {
  background: var(--safe-bg);
  color: var(--safe-text);
  border: 1px solid var(--safe-border);
}

.badge-warning {
  background: var(--warn-bg);
  color: var(--warn-text);
  border: 1px solid var(--warn-border);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

.card-code-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.code-pill {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-color);
  background: var(--primary-light);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  letter-spacing: -0.02em;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-main);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 0 1.25rem 0;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.savings-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  color: #10b981;
}

.card-action-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  color: var(--primary-color);
}

/* Estado sin resultados */
.empty-state {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  margin: 1.5rem 0;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  color: var(--text-subtle);
}

.empty-state-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 0.5rem 0;
}

.empty-state-desc {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 1.5rem;
  line-height: 1.5;
}

/* Parrilla de síntomas */
.symptom-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.symptom-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.symptom-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.symptom-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.75rem 0;
  color: var(--text-main);
}

.symptom-cause {
  background: var(--bg-card-subtle);
  border-left: 3px solid var(--primary-color);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1rem;
  font-size: 0.92rem;
  line-height: 1.5;
}

.symptom-step-list {
  margin: 0.5rem 0 1.25rem 1.25rem;
  padding: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-muted);
}

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

/* Botones estándar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 42px;
  text-decoration: none;
}

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

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

.btn-secondary {
  background-color: var(--bg-card-subtle);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  min-height: 36px;
}

/* Modales accesibles */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(11, 15, 23, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-sizing: border-box;
}

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

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalEnter 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalEnter {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.4rem 1.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  gap: 1rem;
}

.modal-title-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.modal-meta-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0;
  color: var(--text-main);
  line-height: 1.3;
}

.btn-close-modal {
  width: 38px;
  height: 38px;
  background: var(--bg-card-subtle);
  border: none;
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

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

.modal-body {
  padding: 1.5rem 1.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.code-aliases-box {
  background: var(--bg-card-subtle);
  padding: 0.65rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.code-alias-tag {
  font-family: var(--font-mono);
  font-weight: 700;
  background: var(--bg-card);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  margin-left: 0.35rem;
}

.diagnosis-block-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.clear-desc-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary-color);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-main);
  font-size: 0.98rem;
  line-height: 1.6;
  margin: 0;
}

.tech-desc-box {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
  background: var(--bg-card-subtle);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
}

/* Checklist interactivo */
.checklist-container {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.checklist-step-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: all 0.2s ease;
}

.checklist-step-item:hover {
  border-color: var(--primary-color);
}

.checklist-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.step-checkbox {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.step-text {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-main);
}

.step-checkbox:checked + .step-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Caja de reseteo */
.reset-procedure-box {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--warn-text);
}

/* Caja de herramientas y ahorro */
.tools-and-savings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.savings-kpi-box {
  background: var(--safe-bg);
  border: 1px solid var(--safe-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.savings-kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--safe-text);
  text-transform: uppercase;
}

.savings-kpi-value {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--safe-text);
}

.tools-needed-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.tools-needed-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.tool-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tool-tag {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-main);
}

.modal-footer {
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: var(--bg-card);
}

/* Toast de aviso no intrusivo */
.toast-feedback {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: #0f172a;
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] .toast-feedback {
  background: #1e293b;
  border: 1px solid #334155;
}

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

/* Sección didáctica SEO y Preguntas frecuentes */
.seo-guide-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  margin-top: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.seo-guide-section h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 0;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.seo-guide-section p {
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.seo-guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.75rem 0;
}

.seo-guide-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.4rem;
}

.seo-guide-box h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 0;
  margin-bottom: 0.65rem;
}

.seo-guide-box p {
  font-size: 0.92rem;
  margin-bottom: 0;
  line-height: 1.55;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

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

.faq-item[open] {
  border-color: var(--primary-color);
}

.faq-summary {
  padding: 1rem 1.25rem;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq-summary::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

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

.faq-content {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-content p {
  margin: 0;
}

/* Responsividad para móviles */
@media (max-width: 900px) {
  .filters-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .stats-strip {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .stat-value {
    font-size: 1.3rem;
  }
}

@media (max-width: 640px) {
  .hero-card {
    padding: 1.25rem;
  }

  .hero-title {
    font-size: 1.45rem;
  }

  .stats-strip {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .main-search-input {
    height: 48px;
    font-size: 1rem;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .tools-and-savings-row {
    grid-template-columns: 1fr;
  }

  .modal-card {
    max-height: 95vh;
  }

  .modal-header, .modal-body, .modal-footer {
    padding: 1rem 1.25rem;
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer .btn {
    width: 100%;
  }
}

/* Reglas de impresión A4 profesional para diagnóstico */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  .app-header,
  .tool-ad-sidebar,
  .tools-ad-banner-section,
  .fijate-footer,
  .hero-card,
  .mode-tabs,
  .search-controls-card,
  .results-section,
  .seo-guide-section,
  .affiliate-showcase-section,
  .related-tools-section,
  .btn-close-modal,
  .modal-footer,
  .toast-feedback {
    display: none !important;
  }

  .modal-overlay {
    position: static !important;
    display: block !important;
    background: transparent !important;
    padding: 0 !important;
  }

  .modal-card {
    max-width: 100% !important;
    box-shadow: none !important;
    border: none !important;
    max-height: none !important;
  }

  .modal-header {
    border-bottom: 2px solid #000000 !important;
    padding: 0 0 1rem 0 !important;
  }

  .modal-body {
    padding: 1rem 0 !important;
    gap: 1rem !important;
  }

  .checklist-step-item {
    border: 1px solid #cccccc !important;
    background: transparent !important;
  }
}