/* ==========================================================================
   Calculadora de precio por hora y tarifa para autónomos y freelance
   Hojas de estilo canónicas - Fijate Tools
   ========================================================================== */

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

  /* Paleta cromática corporativa - Modo Oscuro (Predeterminado) */
  --calc-bg: #0b0f17;
  --calc-surface: #131a26;
  --calc-surface-raised: #1a2332;
  --calc-surface-card: #16202e;
  --calc-border: #233045;
  --calc-border-hover: #3b82f6;
  --calc-border-subtle: #1c2738;

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

  --calc-primary: #3b82f6;
  --calc-primary-hover: #2563eb;
  --calc-primary-glow: rgba(59, 130, 246, 0.25);

  --calc-accent: #10b981;
  --calc-accent-hover: #059669;
  --calc-accent-glow: rgba(16, 185, 129, 0.2);

  --calc-warning: #f59e0b;
  --calc-warning-bg: rgba(245, 158, 11, 0.12);
  --calc-warning-border: rgba(245, 158, 11, 0.35);

  --calc-danger: #ef4444;
  --calc-danger-bg: rgba(239, 68, 68, 0.12);
  --calc-danger-border: rgba(239, 68, 68, 0.35);

  --calc-info: #06b6d4;
  --calc-info-bg: rgba(6, 182, 212, 0.12);

  --calc-radius-sm: 8px;
  --calc-radius: 12px;
  --calc-radius-lg: 16px;
  --calc-radius-pill: 9999px;

  --calc-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  --calc-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
  --calc-bg: #f8fafc;
  --calc-surface: #ffffff;
  --calc-surface-raised: #f1f5f9;
  --calc-surface-card: #ffffff;
  --calc-border: #e2e8f0;
  --calc-border-hover: #3b82f6;
  --calc-border-subtle: #edf2f7;

  --calc-text: #0f172a;
  --calc-text-muted: #475569;
  --calc-text-dim: #94a3b8;

  --calc-primary: #2563eb;
  --calc-primary-hover: #1d4ed8;
  --calc-primary-glow: rgba(37, 99, 235, 0.15);

  --calc-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  --calc-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Reset y configuración base
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background-color: var(--calc-bg);
  color: var(--calc-text);
  line-height: 1.5;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.brand-title,
.section-title,
.hero-title,
.kpi-title,
.faq-section-title {
  font-family: var(--font-heading);
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem 0;
  color: var(--calc-text);
}

button, input, select, textarea {
  font-family: inherit;
}

.font-mono,
.price-val,
.kpi-val,
.stat-val,
code {
  font-family: var(--font-mono);
}

/* ==========================================================================
   Layout principal canónico
   ========================================================================== */

.tool-layout {
  max-width: 1200px;
  margin: 1.5rem auto 3rem;
  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%;
}

/* Hero introductorio */
.calc-hero {
  background: linear-gradient(135deg, var(--calc-surface-raised) 0%, var(--calc-surface) 100%);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--calc-shadow);
  position: relative;
  overflow: hidden;
}

.calc-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #10b981, #06b6d4);
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--calc-radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
  margin-bottom: 0.6rem;
}

.hero-title {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.hero-desc {
  color: var(--calc-text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0 0 1rem 0;
}

/* Barra de perfiles rápidos */
.hero-presets-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.presets-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--calc-text-dim);
}

.btn-profile-preset {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--calc-surface-card);
  border: 1px solid var(--calc-border);
  color: var(--calc-text);
  padding: 0.4rem 0.85rem;
  border-radius: var(--calc-radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 38px;
}

.btn-profile-preset:hover {
  background: var(--calc-surface-raised);
  border-color: var(--calc-border-hover);
  color: var(--calc-primary);
  transform: translateY(-1px);
}

/* ==========================================================================
   Estructura en dos columnas (Grid interactivo)
   ========================================================================== */

.calc-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

/* Tarjetas de formulario y sección */
.calc-card {
  background: var(--calc-surface);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  padding: 1.35rem;
  margin-bottom: 1.35rem;
  box-shadow: var(--calc-shadow);
  transition: border-color 0.2s ease;
}

.calc-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
}

.card-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.15rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--calc-border-subtle);
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(59, 130, 246, 0.12);
  color: var(--calc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
}

.badge-subtle {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--calc-radius-pill);
  background: var(--calc-surface-raised);
  color: var(--calc-text-muted);
  border: 1px solid var(--calc-border);
  font-weight: 500;
}

/* ==========================================================================
   Controles de formulario táctiles
   ========================================================================== */

.form-group {
  margin-bottom: 1.15rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--calc-text);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.form-hint {
  font-size: 0.76rem;
  color: var(--calc-text-dim);
}

.input-with-affix {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-with-affix input {
  padding-right: 2.75rem;
}

.input-affix {
  position: absolute;
  right: 0.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--calc-text-dim);
  pointer-events: none;
}

.input-field,
.select-field {
  width: 100%;
  min-height: 42px;
  padding: 0.55rem 0.85rem;
  background: var(--calc-surface-card);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-sm);
  color: var(--calc-text);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  outline: none;
}

.input-field:focus,
.select-field:focus {
  border-color: var(--calc-primary);
  box-shadow: 0 0 0 3px var(--calc-primary-glow);
}

.select-field {
  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='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

/* Sliders personalizados */
.slider-container {
  margin-top: 0.5rem;
}

.range-slider {
  width: 100%;
  height: 6px;
  background: var(--calc-surface-raised);
  border-radius: 4px;
  outline: none;
  appearance: none;
  cursor: pointer;
  accent-color: var(--calc-primary);
}

.range-slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--calc-primary);
  border: 2px solid #ffffff;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Filas compactas (grid de dos o tres campos) */
.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.form-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.form-row-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
}

@media (max-width: 600px) {
  .form-row-2,
  .form-row-3,
  .form-row-4 {
    grid-template-columns: 1fr;
  }
}

/* Botonera de ratios rápidos */
.ratio-chips-bar {
  display: flex;
  gap: 0.45rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.btn-ratio-preset {
  background: var(--calc-surface-card);
  border: 1px solid var(--calc-border);
  color: var(--calc-text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  border-radius: var(--calc-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 32px;
}

.btn-ratio-preset:hover {
  color: var(--calc-text);
  border-color: var(--calc-primary);
}

/* Desplegable o contenedor de costes fijos desglosados */
.details-summary-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.85rem;
  background: var(--calc-surface-raised);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-sm);
  cursor: pointer;
  user-select: none;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.details-summary-toggle svg {
  transition: transform 0.2s ease;
}

details[open] .details-summary-toggle svg {
  transform: rotate(180deg);
}

.itemized-costs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0.85rem;
  background: var(--calc-surface-raised);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-sm);
  margin-bottom: 0.85rem;
}

@media (max-width: 600px) {
  .itemized-costs-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Panel de resultados en vivo (Columna derecha)
   ========================================================================== */

.results-column {
  position: sticky;
  top: 1.5rem;
}

/* Tarjeta de tarifa principal recomendada */
.kpi-main-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(59, 130, 246, 0.08) 100%);
  border: 2px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--calc-radius);
  padding: 1.4rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.1);
  position: relative;
  overflow: hidden;
}

.kpi-badge-recommended {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  padding: 0.25rem 0.65rem;
  border-radius: var(--calc-radius-pill);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.kpi-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--calc-text-muted);
  margin-bottom: 0.25rem;
}

.kpi-main-val {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.1;
  color: #10b981;
  margin-bottom: 0.35rem;
}

.kpi-caption {
  font-size: 0.8rem;
  color: var(--calc-text-muted);
  line-height: 1.4;
  margin: 0;
}

/* Malla de tarifas complementarias */
.rates-grid-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.rate-secondary-card {
  background: var(--calc-surface);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-sm);
  padding: 0.95rem;
  text-align: left;
}

.rate-secondary-card.card-survival {
  border-left: 3px solid #f59e0b;
}

.rate-secondary-card.card-premium {
  border-left: 3px solid #8b5cf6;
}

.rate-secondary-card.card-dayrate {
  border-left: 3px solid #3b82f6;
  grid-column: span 2;
}

.sec-rate-label {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--calc-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.2rem;
}

.sec-rate-val {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--calc-text);
  line-height: 1.2;
}

.sec-rate-desc {
  font-size: 0.72rem;
  color: var(--calc-text-muted);
  margin-top: 0.25rem;
}

/* Tarjeta del Mito de las 160 horas (Impacto pedagógico) */
.myth-card {
  background: var(--calc-warning-bg);
  border: 1px solid var(--calc-warning-border);
  border-radius: var(--calc-radius);
  padding: 1.15rem;
  margin-bottom: 1.25rem;
}

.myth-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #fbbf24;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.myth-comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px dashed rgba(245, 158, 11, 0.3);
}

.myth-col {
  font-size: 0.8rem;
}

.myth-col-label {
  color: var(--calc-text-muted);
  margin-bottom: 0.2rem;
}

.myth-col-val {
  font-weight: 700;
  font-size: 1.1rem;
}

.myth-col-val.text-danger {
  color: #ef4444;
}

.myth-alert-tag {
  font-size: 0.72rem;
  color: #f59e0b;
  margin-top: 0.35rem;
  line-height: 1.3;
}

/* ==========================================================================
   Gráfico Donut y Desglose de cada 100 €
   ========================================================================== */

.donut-chart-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.25rem;
}

.donut-svg-container {
  width: 220px;
  height: 220px;
  margin: 0 auto 1rem;
}

.donut-segment {
  transition: stroke-width 0.2s ease, opacity 0.2s ease;
  cursor: pointer;
}

.donut-segment:hover {
  stroke-width: 30px;
  opacity: 0.9;
}

.donut-center-title {
  fill: var(--calc-text);
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 800;
}

.donut-center-sub {
  fill: var(--calc-text-muted);
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 500;
}

.donut-legend-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.donut-legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--calc-radius-sm);
  background: var(--calc-surface-raised);
}

.legend-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-right: 0.45rem;
}

.legend-text-label {
  flex: 1 1 auto;
  color: var(--calc-text-muted);
}

.legend-text-val {
  flex-shrink: 0;
  margin-left: 0.5rem;
}

/* Barra de acciones globales */
.calc-actions-bar {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn-action-primary,
.btn-action-secondary {
  flex: 1 1 0%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.65rem 1rem;
  border-radius: var(--calc-radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 42px;
}

.btn-action-primary {
  background: var(--calc-primary);
  color: #ffffff;
  border: 1px solid var(--calc-primary);
}

.btn-action-primary:hover {
  background: var(--calc-primary-hover);
  box-shadow: 0 4px 15px var(--calc-primary-glow);
}

.btn-action-secondary {
  background: var(--calc-surface-card);
  color: var(--calc-text);
  border: 1px solid var(--calc-border);
}

.btn-action-secondary:hover {
  background: var(--calc-surface-raised);
  border-color: var(--calc-border-hover);
}

/* ==========================================================================
   Estimador de proyectos cerrados (Presupuestador)
   ========================================================================== */

.project-estimator-section {
  background: var(--calc-surface);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  padding: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--calc-shadow);
}

.project-estimator-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: center;
  margin-top: 1.25rem;
}

@media (max-width: 800px) {
  .project-estimator-grid {
    grid-template-columns: 1fr;
  }
}

.project-budget-card {
  background: var(--calc-surface-card);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  padding: 1.25rem;
  text-align: left;
}

.budget-line-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--calc-border-subtle);
  color: var(--calc-text-muted);
}

.budget-line-row.total-row {
  border-bottom: none;
  padding-top: 0.85rem;
  margin-top: 0.4rem;
  border-top: 2px solid var(--calc-border);
  color: var(--calc-text);
  font-weight: 700;
  font-size: 1.15rem;
}

.budget-line-row.total-row .budget-val {
  color: var(--calc-accent);
  font-size: 1.35rem;
}

/* ==========================================================================
   Guía didáctica y acordeón de Preguntas Frecuentes (SEO)
   ========================================================================== */

.faq-section {
  margin-top: 2.5rem;
  margin-bottom: 2rem;
}

.faq-section-title {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

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

.faq-item-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
}

.faq-toggle-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--calc-text);
  font-size: 0.98rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  min-height: 48px;
}

.faq-toggle-btn svg {
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-left: 0.75rem;
  color: var(--calc-text-dim);
}

.faq-toggle-btn[aria-expanded="true"] svg {
  transform: rotate(180deg);
  color: var(--calc-primary);
}

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

.faq-panel-content p {
  margin: 0 0 0.75rem 0;
}

.faq-panel-content p:last-child {
  margin-bottom: 0;
}

.faq-panel-content strong {
  color: var(--calc-text);
}

/* ==========================================================================
   Modales y Notificaciones (Accesibles sin window.alert)
   ========================================================================== */

.modal-backdrop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-backdrop-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog-box {
  background: var(--calc-surface);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius);
  max-width: 520px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: var(--calc-shadow-lg);
  position: relative;
  transform: translateY(15px);
  transition: transform 0.25s ease;
}

.modal-backdrop-overlay.active .modal-dialog-box {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--calc-border-subtle);
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
}

.modal-close-icon-btn {
  background: transparent;
  border: none;
  color: var(--calc-text-dim);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, background 0.15s ease;
}

.modal-close-icon-btn:hover {
  color: var(--calc-text);
  background: var(--calc-surface-raised);
}

.modal-body {
  font-size: 0.92rem;
  color: var(--calc-text-muted);
  line-height: 1.6;
}

/* Toast flotante */
.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--calc-surface-card);
  border: 1px solid var(--calc-border);
  border-radius: var(--calc-radius-sm);
  padding: 0.75rem 1.25rem;
  color: var(--calc-text);
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--calc-shadow-lg);
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notification.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast-notification.toast-success {
  border-left: 4px solid var(--calc-accent);
}

.toast-notification.toast-info {
  border-left: 4px solid var(--calc-primary);
}

.toast-notification.toast-warning {
  border-left: 4px solid var(--calc-warning);
}

/* ==========================================================================
   Estilos de Impresión (@media print)
   ========================================================================== */

@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  .app-header,
  .fijate-footer,
  .tool-ad-sidebar,
  .tools-ad-banner-section,
  .calc-hero::before,
  .hero-presets-bar,
  .calc-actions-bar,
  .faq-section,
  .toast-notification,
  .btn-ratio-preset,
  .range-slider {
    display: none !important;
  }

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

  .tool-with-sidebar {
    display: block !important;
  }

  .calc-grid {
    display: block !important;
  }

  .calc-card,
  .kpi-main-card,
  .rate-secondary-card,
  .project-estimator-section {
    border: 1px solid #cccccc !important;
    box-shadow: none !important;
    background: #ffffff !important;
    color: #000000 !important;
    page-break-inside: avoid;
    margin-bottom: 1.5rem !important;
  }

  .kpi-main-val,
  .sec-rate-val {
    color: #000000 !important;
  }
}