/* ==========================================================================
   CalculaLaboral 2026 - Stylesheet Principal
   Estilo financiero, limpio, accesible y ultra-optimizado.
   ========================================================================== */

/* 1. Reset y Variables CSS */
:root {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-subtle: #f1f5f9;
  --bg-header: #0f172a;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;
  
  --primary: #0f172a;
  --primary-hover: #1e293b;
  --accent-emerald: #10b981;
  --accent-emerald-dark: #059669;
  --accent-emerald-light: #d1fae5;
  --accent-amber: #f59e0b;
  --accent-amber-light: #fef3c7;
  --accent-blue: #2563eb;
  --accent-blue-light: #dbeafe;
  --accent-indigo: #6366f1;
  --accent-red: #ef4444;
  --accent-red-light: #fee2e2;

  --border-color: #e2e8f0;
  --border-focus: #10b981;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 2. Utilidades y Layout */
.container {
  width: 100%;
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* 3. Header y Navegación */
.site-header {
  background-color: var(--bg-header);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-inverse);
  letter-spacing: -0.02em;
}

.brand-icon {
  display: block;
}

.brand-accent {
  color: var(--accent-emerald);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-link:hover, .nav-link:focus-visible {
  color: var(--accent-emerald);
}

/* 4. Sección Hero */
.hero-section {
  background: linear-gradient(180deg, var(--bg-header) 0%, #1e293b 100%);
  color: var(--text-inverse);
  padding: 3.5rem 0 3rem 0;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background-color: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  max-width: 820px;
  margin: 0 auto 1.1rem auto;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-light);
  max-width: 720px;
  margin: 0 auto 2.25rem auto;
  line-height: 1.6;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-md);
  text-align: left;
}

.trust-icon {
  font-size: 1.4rem;
}

.trust-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-inverse);
}

.trust-text span {
  display: block;
  font-size: 0.76rem;
  color: var(--text-light);
}

/* 5. Contenedores de Publicidad */
.ad-slot {
  min-height: 100px;
  background-color: var(--bg-surface-subtle);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  margin: 1.75rem auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 0.5rem;
}

.ad-disclaimer {
  position: absolute;
  top: 4px;
  right: 8px;
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* 6. Pestañas del Simulador */
.simulator-wrapper {
  margin-top: 1.5rem;
  margin-bottom: 2rem;
}

.tabs-header {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  background-color: var(--bg-surface-subtle);
  padding: 0.4rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.tab-btn:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.6);
}

.tab-btn.active {
  background-color: var(--bg-surface);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.tab-btn-icon {
  font-size: 1.15rem;
}

/* 7. Paneles de la Calculadora (Lógica de Pestañas) */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 8. Grid de la Calculadora (Formulario + Resultados) */
.calc-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.75rem;
  align-items: start;
}

.calc-form-card, .calc-results-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
}

.card-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.card-description {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Form Controls */
.calc-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

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

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

.form-label {
  display: flex;
  flex-direction: column;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.label-hint {
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--text-muted);
}

.input-prefix-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-affix {
  position: absolute;
  left: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
}

.form-input, .form-select {
  width: 100%;
  height: 46px;
  padding: 0 0.9rem;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-main);
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  outline: none;
}

.form-input.has-affix {
  padding-left: 2.25rem;
  font-weight: 600;
  font-size: 1.05rem;
}

.form-input:focus, .form-select:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

/* 9. Tarjeta de Resultados */
.calc-results-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1.5px solid var(--border-color);
  position: sticky;
  top: 88px;
}

.results-header {
  background-color: var(--bg-header);
  color: var(--text-inverse);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.results-tag {
  display: inline-block;
  background-color: rgba(16, 185, 129, 0.2);
  color: #34d399;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.6rem;
}

.metric-caption {
  display: block;
  font-size: 0.88rem;
  color: var(--text-light);
  font-weight: 500;
}

.metric-number {
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--accent-emerald);
  line-height: 1.15;
  margin: 0.25rem 0;
  letter-spacing: -0.03em;
}

.metric-sub {
  display: block;
  font-size: 0.8rem;
  color: var(--text-light);
}

.results-body {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border-color);
}

.result-row:last-of-type {
  border-bottom: none;
}

.result-row.highlight-row {
  background-color: var(--accent-emerald-light);
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  border-bottom: none;
}

.result-row.highlight-emerald {
  background-color: rgba(16, 185, 129, 0.1);
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  border-bottom: none;
}

.row-label {
  display: flex;
  flex-direction: column;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.row-subtext {
  font-size: 0.74rem;
  font-weight: 400;
  color: var(--text-muted);
}

.row-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: right;
}

.row-value-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.row-value-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge-exento {
  display: inline-block;
  background-color: var(--accent-emerald);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  margin-top: 0.2rem;
}

.text-emerald { color: var(--accent-emerald-dark); }
.text-amber { color: #d97706; }
.text-blue { color: var(--accent-blue); }

/* Sub-desglose detallado */
.sub-breakdown {
  background-color: var(--bg-surface-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.82rem;
  border: 1px solid var(--border-color);
}

.sub-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sub-label {
  color: var(--text-muted);
}

.sub-value {
  font-weight: 600;
  color: var(--text-main);
}

.info-callout {
  display: flex;
  gap: 0.65rem;
  background-color: var(--accent-blue-light);
  border-left: 3px solid var(--accent-blue);
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  line-height: 1.45;
  color: #1e3a8a;
  margin-top: 0.5rem;
}

.callout-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* 10. Barras de Distribución Visual */
.distribution-section {
  margin-top: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.distribution-title {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.multi-progress-bar {
  display: flex;
  height: 14px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background-color: #e2e8f0;
  margin-bottom: 0.65rem;
}

.bar-segment {
  height: 100%;
  transition: width 0.3s ease;
}

.bar-neto { background-color: var(--accent-emerald); }
.bar-irpf { background-color: var(--accent-amber); }
.bar-ss { background-color: var(--accent-blue); }
.bar-empresa { background-color: var(--accent-indigo); }

.progress-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot-neto { background-color: var(--accent-emerald); }
.dot-irpf { background-color: var(--accent-amber); }
.dot-ss { background-color: var(--accent-blue); }
.dot-empresa { background-color: var(--accent-indigo); }

/* 11. Sección de Guía Laboral y Tablas */
.guide-section {
  padding: 3.5rem 1.25rem;
  border-top: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 2.5rem auto;
}

.section-tag {
  display: inline-block;
  background-color: var(--accent-blue-light);
  color: var(--accent-blue);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.section-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.guide-block {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.guide-block h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.guide-block p {
  color: #334155;
  font-size: 0.96rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.guide-block ul, .guide-block ol {
  margin: 1rem 0 1.25rem 1.5rem;
  color: #334155;
  font-size: 0.95rem;
}

.guide-block li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* Tablas HTML Estilizadas */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.25rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
  background-color: var(--bg-surface);
}

.guide-table thead {
  background-color: var(--bg-header);
  color: var(--text-inverse);
}

.guide-table th {
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.guide-table td {
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

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

.guide-table tbody tr:nth-child(even) {
  background-color: var(--bg-surface-subtle);
}

.guide-table tbody tr:hover {
  background-color: rgba(16, 185, 129, 0.04);
}

.table-total-row {
  background-color: #f1f5f9;
  font-weight: 700;
}

.table-caption {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 0.4rem;
}

/* Badges para tablas */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background-color: var(--accent-emerald-light); color: var(--accent-emerald-dark); }
.badge-warning { background-color: var(--accent-amber-light); color: #b45309; }
.badge-danger { background-color: var(--accent-red-light); color: var(--accent-red); }

.guide-alert {
  background-color: #fffbeb;
  border: 1px solid #fde68a;
  border-left: 4px solid var(--accent-amber);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.25rem;
}

.guide-alert h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #92400e;
  margin-bottom: 0.4rem;
}

.guide-alert p {
  color: #78350f;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.guide-alert p:last-child {
  margin-bottom: 0;
}

/* 12. Sección FAQ (Acordeones Nativos) */
.faq-section {
  padding: 1rem 1.25rem 4rem 1.25rem;
}

.faq-accordion-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.35rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  list-style: none;
}

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

.faq-chevron {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: transform var(--transition);
}

.faq-item[open] .faq-chevron {
  transform: rotate(45deg);
  color: var(--accent-emerald);
}

.faq-answer {
  padding: 0 1.35rem 1.35rem 1.35rem;
  color: #334155;
  font-size: 0.92rem;
  line-height: 1.65;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
}

.faq-answer p {
  margin-bottom: 0.75rem;
}

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

.faq-answer ol {
  margin-left: 1.25rem;
}

.faq-answer li {
  margin-bottom: 0.4rem;
}

/* 13. Footer */
.site-footer {
  background-color: var(--bg-header);
  color: var(--text-inverse);
  padding: 3.5rem 0 2rem 0;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.75rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand-text {
  font-size: 1.35rem;
  font-weight: 800;
}

.footer-tagline {
  color: var(--text-light);
  font-size: 0.84rem;
  margin-top: 0.35rem;
  max-width: 480px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-link-btn {
  background: none;
  border: none;
  color: var(--text-light);
  font-family: inherit;
  font-size: 0.88rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.footer-link-btn:hover {
  color: var(--accent-emerald);
}

.footer-bottom {
  padding-top: 1.75rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.disclaimer-text {
  margin-bottom: 0.75rem;
}

.copyright-text {
  color: var(--text-light);
}

.footer-mail {
  color: var(--accent-emerald);
  text-decoration: none;
}

.footer-mail:hover {
  text-decoration: underline;
}

/* 14. Ventana Modal de Textos Legales */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  animation: modalScale 0.2s ease-out;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

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

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

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

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

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  font-size: 0.92rem;
  color: #334155;
  line-height: 1.65;
}

.modal-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.25rem 0 0.5rem 0;
}

.modal-body h4:first-child {
  margin-top: 0;
}

.modal-body p {
  margin-bottom: 0.85rem;
}

.modal-body ul {
  margin: 0.5rem 0 1rem 1.5rem;
}

.modal-body li {
  margin-bottom: 0.35rem;
}

/* 15. Banner de Cookies RGPD */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #0f172a;
  color: #ffffff;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
  z-index: 9990;
}

.cookie-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cookie-text-area {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  flex: 1 1 560px;
}

.cookie-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.cookie-title {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.cookie-desc {
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.cookie-link-btn {
  background: none;
  border: none;
  color: var(--accent-emerald);
  text-decoration: underline;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  padding: 0;
}

.cookie-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn-cookie-primary {
  background-color: var(--accent-emerald);
  color: #ffffff;
  border: none;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition);
}

.btn-cookie-primary:hover {
  background-color: var(--accent-emerald-dark);
}

.btn-cookie-secondary {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition);
}

.btn-cookie-secondary:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.btn-cookie-tertiary {
  background: transparent;
  color: #94a3b8;
  border: none;
  font-family: inherit;
  font-size: 0.82rem;
  text-decoration: underline;
  cursor: pointer;
  padding: 0.5rem;
}

.btn-cookie-tertiary:hover {
  color: #ffffff;
}

/* 16. Media Queries Responsivas */
@media (max-width: 900px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }

  .calc-results-card {
    position: static;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: auto;
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
    flex-direction: column;
    gap: 0.6rem;
  }

  .site-nav {
    gap: 1rem;
  }

  .tabs-header {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .guide-block {
    padding: 1.5rem 1rem;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
}