@font-face {
  font-family: 'Atkinson Hyperlegible';
  src: url('/fonts/atkinson.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Sora';
  src: url('/fonts/sora.woff2') format('woff2');
  font-weight: 600 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --font-sans: 'Atkinson Hyperlegible', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Sora', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --bg: #f6f2ea;
  --surface: #fcfaf5;
  --surface-muted: #efe9dc;
  --surface-accent: #f3ebe0;
  --ink: #16232b;
  --ink-muted: #4a5963;
  --border: #d5cdc0;
  --border-strong: #9aa6ae;
  --primary: #18262e;
  --primary-hover: #243844;
  --primary-contrast: #fcfaf5;
  --copper: #b84a27;
  --copper-soft: #faeae4;
  --pos: #186046;
  --pos-soft: #e4f3ec;
  --neg: #a6261b;
  --neg-soft: #fceae8;
  --focus: #b84a27;
  --suggest-error: #a6261b;
  --shadow-sm: 0 1px 2px rgba(22, 35, 43, 0.06);
}

html[data-theme="dark"] {
  --bg: #0f171c;
  --surface: #162128;
  --surface-muted: #1d2b34;
  --surface-accent: #222b2f;
  --ink: #eee9df;
  --ink-muted: #b0bec7;
  --border: #2c3d48;
  --border-strong: #4d6270;
  --primary: #e07a47;
  --primary-hover: #eb8f61;
  --primary-contrast: #10181d;
  --copper: #eb8a64;
  --copper-soft: #33211b;
  --pos: #56c99d;
  --pos-soft: #153128;
  --neg: #f48278;
  --neg-soft: #381c1a;
  --focus: #eb8a64;
  --suggest-error: #f48278;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
}

html[data-font="large"] {
  font-size: 109%;
}

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

html {
  font-family: var(--font-sans);
  line-height: 1.48;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--copper);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--ink);
}

:focus-visible {
  outline: 2.5px solid var(--focus);
  outline-offset: 2px;
}

.tabular-num {
  font-variant-numeric: tabular-nums;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 1000;
  background: var(--primary);
  color: var(--primary-contrast);
  padding: 8px 14px;
  border-radius: 4px;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: 8px;
}

/* Cabecera compacta */
.site-header {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 5px;
  background: var(--primary);
  color: var(--primary-contrast);
  font-size: 0.78rem;
  font-weight: 700;
  border: 1.5px solid var(--copper);
}

.brand-text small {
  color: var(--copper);
  font-weight: 700;
  font-size: 0.88em;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 3px 9px;
  border-radius: 4px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.nav-link:hover {
  background: var(--surface-muted);
}

.nav-link.is-current {
  background: var(--surface-muted);
  border-color: var(--border-strong);
  color: var(--copper);
}

.nav-short {
  display: none;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pref-btn {
  min-height: 30px;
  min-width: 36px;
  padding: 3px 9px;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  background: var(--surface-muted);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

.pref-btn[aria-pressed="true"] {
  background: var(--primary);
  color: var(--primary-contrast);
  border-color: var(--primary);
}

/* Contenedor principal — Aire <= 14px en escritorio y <= 10px en móvil */
.site-main {
  flex: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 14px 36px;
}

/* Intro ultra compacta para dejar la calculadora arriba sin bajar */
.tool-intro,
.page-hero-compact {
  margin: 0 0 10px;
}

.eyebrow {
  margin: 0 0 2px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--copper);
}

.page-title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: clamp(1.22rem, 1.9vw, 1.62rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-lead {
  margin: 0 0 8px;
  font-size: 0.92rem;
  line-height: 1.38;
  color: var(--ink-muted);
  max-width: 95ch;
}

/* Selector rápido entre las 4 calculadoras */
.tool-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}

.tool-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.tool-pill:hover {
  border-color: var(--border-strong);
  background: var(--surface-muted);
}

.tool-pill.is-active {
  background: var(--primary);
  color: var(--primary-contrast);
  border-color: var(--primary);
}

/* Mesa de cálculo (Workbench) */
.calc-workbench {
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  padding: 12px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 22px;
}

.workbench-grid {
  display: grid;
  grid-template-columns: minmax(290px, 415px) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.calc-form {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 11px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
}

.form-mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--surface);
  padding: 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.mode-tab {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  cursor: pointer;
  border-radius: 4px;
  font-size: 0.81rem;
  font-weight: 700;
  text-align: center;
  padding: 4px 6px;
}

.mode-tab input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-tab:has(input:checked) {
  background: var(--primary);
  color: var(--primary-contrast);
}

.field-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.field-row-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.field-row-2[hidden] {
  display: none !important;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.field-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
}

.field-hint {
  font-size: 0.78rem;
  color: var(--ink-muted);
  line-height: 1.28;
}

.calc-form input[type="text"],
.calc-form input[type="email"],
.calc-form select,
.suggest-form input[type="text"],
.suggest-form input[type="email"],
.suggest-form textarea {
  width: 100%;
  min-height: 34px;
  padding: 5px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

.input-prefix,
.input-suffix {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--surface);
  overflow: hidden;
}

.input-prefix > span,
.input-suffix > span {
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  background: var(--surface-accent);
  color: var(--ink-muted);
  font-size: 0.84rem;
  font-weight: 700;
  border-right: 1px solid var(--border);
}

.input-suffix > span {
  border-right: 0;
  border-left: 1px solid var(--border);
}

.input-prefix input,
.input-suffix input {
  border: 0 !important;
  border-radius: 0 !important;
  min-width: 0;
  flex: 1;
}

.checkbox-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--ink);
  cursor: pointer;
  padding-top: 2px;
}

.checkbox-line input {
  margin-top: 3px;
  width: 16px;
  height: 16px;
}

.form-submit-row {
  margin-top: 2px;
}

.btn-primary,
.btn-secondary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 12px;
  border-radius: 5px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  width: 100%;
  background: var(--primary);
  color: var(--primary-contrast);
}

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

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--surface-muted);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  color: var(--ink);
  background: var(--surface-muted);
}

/* Lote de producción (/costo-unitario/) */
.batch-items-fieldset {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: var(--surface);
  min-width: 0;
}

.batch-items-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}

.batch-item-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(95px, 0.9fr) auto;
  gap: 6px;
  align-items: center;
}

.btn-icon-remove {
  min-height: 34px;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-icon-remove:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-add-item {
  width: 100%;
}

/* Panel de resultados */
.calc-results {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.kpi-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.kpi-card {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border-strong);
  border-radius: 6px;
  padding: 9px 11px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.kpi-card-primary {
  border-left-color: var(--primary);
  background: var(--surface-accent);
}

.kpi-card-accent {
  border-left-color: var(--pos);
  background: var(--pos-soft);
}

.kpi-card-danger {
  border-left-color: var(--neg);
  background: var(--neg-soft);
}

.kpi-label {
  font-size: 0.79rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.kpi-value {
  font-family: var(--font-display);
  font-size: clamp(1.18rem, 1.75vw, 1.48rem);
  line-height: 1.15;
  color: var(--ink);
}

.kpi-vs {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.kpi-sub {
  font-size: 0.79rem;
  color: var(--ink-muted);
}

.calc-alert {
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 0.86rem;
  border: 1px solid var(--border-strong);
}

.calc-alert-error {
  background: var(--neg-soft);
  border-color: var(--neg);
  color: var(--ink);
}

.calc-alert-warn {
  background: var(--copper-soft);
  border-color: var(--copper);
  color: var(--ink);
}

/* Diagramas SVG */
.calc-diagram {
  margin: 0;
  padding: 9px 11px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.diagram-caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px;
  font-size: 0.82rem;
  margin-bottom: 6px;
  color: var(--ink-muted);
}

.diagram-caption strong {
  color: var(--ink);
}

.diagram-axes {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.diagram-axes strong {
  color: var(--ink);
}

.diagram-legend {
  list-style: none;
  margin: 7px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.8rem;
  color: var(--ink);
}

.diagram-legend li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-swatch {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 2px;
  flex-shrink: 0;
}

.diagram-summary {
  margin: 6px 0 0;
  font-size: 0.8rem;
  color: var(--ink-muted);
}

/* Comparación lado a lado Margen vs Recargo */
.comparison-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.split-box {
  padding: 9px 11px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.split-box-margin {
  border-top: 3px solid var(--pos);
}

.split-box-markup {
  border-top: 3px solid var(--copper);
}

.split-tag {
  font-size: 0.81rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 3px;
}

.split-formula {
  margin: 0 0 6px;
  font-size: 0.79rem;
  color: var(--ink-muted);
}

.split-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.83rem;
}

.split-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.split-note {
  margin: 0;
  padding: 8px 11px;
  background: var(--surface-accent);
  border-left: 3px solid var(--copper);
  border-radius: 4px;
  font-size: 0.83rem;
}

.result-details-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 10px;
  min-width: 0;
}

.detail-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  min-width: 0;
}

.panel-subtitle {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  color: var(--ink);
}

.ledger-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.84rem;
}

.ledger-list > div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 3px 0;
  border-bottom: 1px dashed var(--border);
}

.ledger-list dt {
  color: var(--ink-muted);
}

.ledger-list dd {
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.ledger-total {
  border-bottom: 1.5px solid var(--border-strong) !important;
  color: var(--ink);
}

.ledger-total dt {
  color: var(--ink);
  font-weight: 700;
}

.ledger-highlight {
  background: var(--pos-soft);
  padding: 5px 6px !important;
  border-radius: 4px;
  border-bottom: 0 !important;
}

.ledger-highlight dt {
  color: var(--ink);
  font-weight: 700;
}

/* Tablas con desplazamiento seguro desde 320px */
.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-radius: 5px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.data-table th {
  background: var(--surface-muted);
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.data-table tr.row-current {
  background: var(--surface-accent);
}

.num-pos {
  color: var(--pos);
}

.num-neg {
  color: var(--neg);
}

.panel-bridge {
  margin: 8px 0 0;
  font-size: 0.83rem;
}

.bridge-link {
  font-weight: 700;
}

/* Barra de acciones de cada calculadora */
.calc-actions {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.action-feedback {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pos);
}

/* Secciones y grillas de tarjetas */
.section-block {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.section-block-distinct {
  background: var(--surface-accent);
  padding: 18px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
}

.section-head {
  margin-bottom: 12px;
}

.section-head h2 {
  margin: 2px 0 4px;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
}

.section-head p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--pos);
}

.section-tag-copper {
  color: var(--copper);
}

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.feature-card,
.guide-card,
.prose-box,
.download-card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 13px;
  min-width: 0;
}

.guide-card-formal {
  border-top: 3px solid var(--copper);
}

.card-step,
.guide-meta {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-muted);
  margin-bottom: 4px;
}

.feature-card h3,
.guide-card h3,
.prose-box h3,
.download-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 0.98rem;
  line-height: 1.28;
}

.feature-card p,
.guide-card p,
.prose-box p,
.download-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.guide-card-links {
  margin-top: 8px !important;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.83rem !important;
  font-weight: 700;
}

/* Guías individuales */
.breadcrumb {
  margin: 0 0 8px;
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.81rem;
  color: var(--ink-muted);
}

.breadcrumb li + li::before {
  content: '/';
  margin-right: 6px;
  color: var(--border-strong);
}

.guide-article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
}

.guide-cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.guide-cta-bar .btn-primary {
  width: auto;
}

.guide-toc {
  margin: 14px 0;
  padding: 12px 14px;
  background: var(--surface-muted);
  border-left: 4px solid var(--primary);
  border-radius: 5px;
}

.toc-title {
  display: block;
  font-size: 0.86rem;
  margin-bottom: 6px;
}

.guide-toc ol {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.86rem;
}

.guide-section {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.guide-section h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.prose-list {
  margin: 8px 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.formula-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 10px 0;
}

.formula-card {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
}

.formula-card h3 {
  margin: 0 0 6px;
  font-size: 0.95rem;
}

.formula-code {
  margin: 4px 0;
  padding: 5px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.84rem;
  overflow-x: auto;
}

.legal-disclaimer {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--surface-accent);
  border-left: 3px solid var(--copper);
  border-radius: 4px;
  font-size: 0.83rem;
}

/* Contacto */
.contact-layout {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 14px;
  align-items: start;
}

.suggest-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.suggest-trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.suggest-status {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 700;
}

.suggest-done {
  margin-top: 10px;
  padding: 12px;
  border-radius: 6px;
  background: var(--pos-soft);
  border: 1px solid var(--pos);
  font-weight: 700;
}

.contact-email-box {
  margin: 8px 0;
  padding: 8px 10px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.92rem;
  word-break: break-all;
}

.contact-copy-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.contact-copy-status {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pos);
}

.card-divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}

.small-muted {
  font-size: 0.83rem;
  color: var(--ink-muted);
}

/* Banner de privacidad */
.privacy-banner {
  background: var(--surface-accent);
  border-top: 2px solid var(--copper);
  padding: 10px 14px;
}

.privacy-banner-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.85rem;
}

.privacy-banner-inner p {
  margin: 0;
}

.privacy-actions {
  display: flex;
  gap: 8px;
}

.privacy-actions .btn-primary {
  width: auto;
}

/* Pie de página */
.site-footer {
  background: var(--surface);
  border-top: 2px solid var(--border);
  margin-top: auto;
  padding: 20px 14px;
  font-size: 0.84rem;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 18px;
}

.footer-col p {
  margin: 6px 0 0;
  color: var(--ink-muted);
}

.footer-links {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.footer-link-btn {
  background: none;
  border: 0;
  padding: 0;
  color: var(--copper);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  text-decoration: underline;
  cursor: pointer;
}

/* Responsivo: pantallas medianas y móviles desde 320px */
@media (max-width: 980px) {
  .workbench-grid,
  .result-details-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .card-grid-4,
  .card-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-main {
    padding: 8px 10px 28px;
  }

  .header-inner {
    padding: 5px 10px;
    gap: 5px;
  }

  .brand {
    order: 1;
  }

  .header-controls {
    order: 2;
    margin-left: auto;
  }

  .main-nav {
    order: 3;
    width: 100%;
  }

  .nav-full {
    display: none;
  }

  .nav-short {
    display: inline;
  }

  .nav-link {
    padding: 2px 7px;
    min-height: 28px;
    font-size: 0.8rem;
  }

  .page-lead {
    font-size: 0.86rem;
    line-height: 1.32;
    margin-bottom: 6px;
  }

  .kpi-strip,
  .comparison-split,
  .formula-grid,
  .card-grid-4,
  .card-grid-3,
  .card-grid-2,
  .footer-inner,
  .field-row-3 {
    grid-template-columns: 1fr;
  }

  .tool-switcher {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5px;
  }

  .tool-pill {
    justify-content: center;
    font-size: 0.8rem;
    padding: 3px 6px;
  }
}

@media (max-width: 440px) {
  .field-row-2 {
    grid-template-columns: 1fr;
  }

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

  .calc-workbench {
    padding: 9px;
  }

  .calc-form {
    padding: 9px;
  }
}

@media print {
  .site-header,
  .tool-switcher,
  .calc-actions,
  .site-footer,
  .privacy-banner,
  .skip-link,
  .section-block {
    display: none !important;
  }

  body,
  .site-main,
  .calc-workbench {
    background: #ffffff !important;
    color: #000000 !important;
    border: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
  }

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