/* =============================================
   Calculadora de Importación — calc-ind.css
   Light theme · Plus Jakarta Sans · Paleta azul
   ============================================= */

/* ── 1. Variables ──────────────────────────────────────────────────────── */
:root {
  --color-primary:        #1B4FDB;
  --color-primary-dark:   #1640B8;
  --color-primary-light:  #2D63F5;
  --color-accent:         #0EA5E9;
  --gradient:             linear-gradient(135deg, #1B4FDB, #0EA5E9);

  --color-bg:             #F8FAFF;
  --color-bg-alt:         #EEF2FF;
  --color-bg-card:        #FFFFFF;
  --color-bg-elevated:    #FFFFFF;
  --color-bg-footer:      #1A2540;

  --color-text:           #111827;
  --color-text-muted:     #4B5563;
  --color-text-subtle:    #9CA3AF;
  --color-white:          #FFFFFF;

  --color-border:         #E5E7EB;
  --color-border-hover:   #1B4FDB;

  --color-success:        #16A34A;
  --color-error:          #DC2626;

  --font-base: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;

  --radius-sm:   4px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,.12);
  --shadow-xl:  0 16px 40px rgba(0,0,0,.14);

  --transition:      0.22s ease;
  --transition-slow: 0.38s ease;

  --nav-height: 68px;

  --wa-btn-size:    54px;
  --wa-btn-bottom:  28px;
  --wa-btn-right:   28px;
  --back-top-size:  46px;
  --back-top-gap:   20px;
  --back-top-bottom: calc(var(--wa-btn-bottom) + var(--wa-btn-size) + var(--back-top-gap));
  --back-top-right:  calc(var(--wa-btn-right) + (var(--wa-btn-size) - var(--back-top-size)) / 2);
}

/* ── 2. Reset y base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
p, h1, h2, h3, h4 { overflow-wrap: break-word; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; }
input::placeholder, textarea::placeholder { color: var(--color-text-subtle); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }

/* ── 3. Typography ─────────────────────────────────────────────────────── */
h1 { font-size: clamp(1.875rem, 5vw, 3rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); font-weight: 600; line-height: 1.3; }
p  { line-height: 1.75; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 580px;
  line-height: 1.7;
}
.highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 4. Layout ─────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header .section-subtitle { margin: 12px auto 0; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  z-index: 9999;
  border-radius: 0 0 var(--radius-md) 0;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ── 5. Preloader ──────────────────────────────────────────────────────── */
#pxl-loader {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader-wrap { position: relative; width: 60px; height: 60px; }
.loader-circle {
  position: absolute;
  inset: 0;
  border: 3px solid var(--color-bg-alt);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
.loader-line-mask { display: none; }
.loader-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
@keyframes spin { to { transform: rotate(360deg); } }
#pxl-loader.is-loaded {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

/* ── 6. Header / Nav ───────────────────────────────────────────────────── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}
#site-header.scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.nav-logo-text .logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--gradient);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  flex-shrink: 0;
}
.nav-logo-text strong { color: var(--color-primary); }

.btn-nav {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn-nav:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(27,79,219,.35);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px 20px;
  z-index: 999;
  box-shadow: var(--shadow-lg);
}
.nav-mobile.is-open { display: flex; }
.nav-mobile a {
  padding: 10px 12px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
}
.nav-mobile a:hover { background: var(--color-bg-alt); color: var(--color-primary); }

/* ── 7. Calc page layout ───────────────────────────────────────────────── */
.calc-page {
  min-height: 100vh;
  padding: calc(var(--nav-height) + 60px) 0 0;
}

.calc-container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── 8. Hero / encabezado ──────────────────────────────────────────────── */
.calc-header {
  text-align: center;
  margin-bottom: 48px;
}
.calc-header .section-label {
  justify-content: center;
}
.calc-header h1 {
  color: var(--color-text);
  margin-bottom: 16px;
}
.calc-hero-desc {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── 9. Card genérica ──────────────────────────────────────────────────── */
.calc-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

/* ── 10. Formulario ────────────────────────────────────────────────────── */
.calc-form-title {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 20px;
}

.form-field { margin-bottom: 20px; }
.form-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-field label span { color: var(--color-primary); margin-left: 2px; }

.form-field .field-hint {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  margin-bottom: 8px;
  line-height: 1.5;
}

.form-field input[type="text"],
.form-field input[type="number"],
.form-field input[type="url"],
.form-field input[type="email"],
.form-field textarea {
  width: 100%;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9375rem;
  padding: 11px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-field input[type="number"]::-webkit-outer-spin-button,
.form-field input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.form-field input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
.form-field textarea { resize: vertical; min-height: 96px; }
.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27,79,219,.12);
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ── 11. Panel avanzado ────────────────────────────────────────────────── */
.advanced-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  margin-bottom: 16px;
}
.advanced-toggle:hover { border-color: var(--color-primary); color: var(--color-text); }
.advanced-toggle-arrow { transition: transform var(--transition); }
.advanced-toggle[aria-expanded="true"] .advanced-toggle-arrow { transform: rotate(180deg); }
.advanced-panel { display: none; }
.advanced-panel.is-open { display: block; }

.file-input-wrap { display: flex; align-items: center; gap: 12px; }
.file-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  background: var(--color-bg-alt);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  white-space: nowrap;
}
.file-btn:hover { border-color: var(--color-primary); background: #EEF2FF; }
.file-name {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}
#imagen-input { display: none; }

/* ── 12. Botones del formulario ────────────────────────────────────────── */
.form-actions { display: flex; gap: 12px; margin-top: 28px; }

.btn-calcular {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 32px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-calcular:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(27,79,219,.35);
}
.btn-calcular:disabled { opacity: 0.65; cursor: not-allowed; }

.btn-limpiar {
  display: inline-flex;
  align-items: center;
  padding: 13px 24px;
  background: transparent;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-limpiar:hover { border-color: var(--color-border-hover); color: var(--color-text); }

/* ── 13. Loading overlay ───────────────────────────────────────────────── */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17,24,39,.6);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
}
.loading-overlay.is-visible { display: flex; }
.loading-spinner {
  width: 44px; height: 44px;
  border: 3px solid rgba(255,255,255,.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.loading-text { color: rgba(255,255,255,.8); font-size: 0.9375rem; font-weight: 500; }

/* ── 14. Error banner ──────────────────────────────────────────────────── */
.error-banner {
  display: none;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  border-radius: var(--radius-md);
  color: var(--color-error);
  padding: 14px 18px;
  font-size: 0.875rem;
  margin-bottom: 20px;
}
.error-banner.is-visible { display: block; }

/* ── 15. Panel de resultados ───────────────────────────────────────────── */
.results-section { display: none; }
.results-section.is-visible { display: block; }

.results-intro { margin-bottom: 20px; }
.results-intro .result-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.results-intro h2 {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 8px;
}
.results-intro p { font-size: 0.875rem; color: var(--color-text-muted); }

.result-highlight {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 0.875rem;
}
.result-highlight strong { color: var(--color-primary); display: block; margin-bottom: 4px; font-weight: 700; }
.result-highlight span   { color: var(--color-text-muted); }

/* Grid de cards comparación */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.comparison-card {
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}
.comparison-card.is-primary {
  border-color: var(--color-primary);
  border-left-width: 4px;
  background: #F0F5FF;
}
.comparison-card.is-secondary {
  background: #fff;
}

.card-top { margin-bottom: 4px; }
.card-badge {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 4px;
  background: rgba(27,79,219,.12);
  color: var(--color-primary);
  margin-bottom: 6px;
}
.card-badge-ref {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 4px;
  background: var(--color-bg-alt);
  color: var(--color-text-subtle);
  margin-bottom: 6px;
}
.card-overline {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.price-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(22,163,74,.12);
  color: var(--color-success);
  margin-bottom: 8px;
}
.price-tag.warn {
  background: var(--color-bg-alt);
  color: var(--color-text-subtle);
}
.price-main {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: 4px;
}
.comparison-card.is-primary .price-main { color: var(--color-primary); }
.price-iva {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}
.price-iva span { font-weight: 700; color: var(--color-text-muted); }

.card-features, .card-risks {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.card-features li {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-left: 18px;
  position: relative;
  line-height: 1.4;
}
.card-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient);
}
.card-risks li {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  padding-left: 18px;
  position: relative;
  line-height: 1.4;
}
.card-risks li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-subtle);
}
.card-footnote {
  font-size: 0.6875rem;
  color: var(--color-text-subtle);
  line-height: 1.5;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

/* ── 16. Bloque de recomendación Importa Fácil ─────────────────────────── */
.recommendation-block {
  background: #1A2540;
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  margin-bottom: 24px;
  color: #fff;
}
.rec-intro { margin-bottom: 24px; }
.rec-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #0EA5E9;
  margin-bottom: 6px;
}
.rec-intro h3 {
  font-size: 1.125rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}
.rec-intro p {
  font-size: 0.875rem;
  color: rgba(255,255,255,.65);
  line-height: 1.6;
}
.rec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.rec-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.rec-item svg { flex-shrink: 0; margin-top: 2px; }
.rec-item strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.rec-item p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,.55);
  line-height: 1.5;
}
.rec-cta { text-align: center; }
.btn-rec-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-rec-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(27,79,219,.45);
}

/* ── 17. Descarga PDF / lead ───────────────────────────────────────────── */
.lead-section { display: none; }
.lead-section.is-visible { display: block; }
.lead-card {
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.lead-intro { margin-bottom: 24px; }
.lead-intro .result-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.lead-intro h3 { font-size: 1.125rem; font-weight: 700; color: var(--color-text); margin-bottom: 8px; }
.lead-intro p  { font-size: 0.875rem; color: var(--color-text-muted); }
.lead-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }

.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 32px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(27,79,219,.35);
}
.btn-submit:disabled { opacity: 0.65; cursor: not-allowed; }

.btn-cancelar {
  display: inline-flex;
  align-items: center;
  padding: 13px 24px;
  background: transparent;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-cancelar:hover { border-color: var(--color-border-hover); color: var(--color-text); }

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: transparent;
  border: 1.5px solid rgba(22,163,74,.4);
  border-radius: var(--radius-md);
  color: var(--color-success);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  text-decoration: none;
}
.btn-download:hover {
  background: rgba(22,163,74,.08);
  border-color: var(--color-success);
}

/* ── 18. Bottom de resultados ──────────────────────────────────────────── */
.result-bottom {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
  margin-bottom: 64px;
}
.btn-otra {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: transparent;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--transition), color var(--transition);
}
.btn-otra:hover { border-color: var(--color-border-hover); color: var(--color-text); }
.result-legal {
  flex: 1;
  font-size: 0.6875rem;
  color: var(--color-text-subtle);
  line-height: 1.6;
}

/* ── 19. Secciones SEO ─────────────────────────────────────────────────── */
.seo-section { background: var(--color-bg); }
.seo-section.alt-bg { background: var(--color-bg-alt); }

.seo-section .section-label,
.seo-section h2,
.seo-section .section-subtitle { text-align: center; }
.seo-section h2 { color: var(--color-text); margin-bottom: 12px; }

/* Steps grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.step-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.step-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}
.step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  border-top: 3px solid transparent;
  border-image: var(--gradient) 1;
  box-shadow: var(--shadow-sm);
}
.feature-card h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.disclaimer-box {
  margin-top: 40px;
  padding: 18px 22px;
  background: #FFF7ED;
  border: 1px solid #FED7AA;
  border-left: 4px solid #F97316;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.8125rem;
  color: #92400E;
  line-height: 1.65;
}
.disclaimer-box strong { color: #7C2D12; }

/* ── 20. FAQ ───────────────────────────────────────────────────────────── */
#faq { background: var(--color-bg); }

.faq-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: start;
}
.faq-intro { position: sticky; top: calc(var(--nav-height) + 32px); }
.faq-intro h2 { margin-bottom: 16px; }
.faq-intro p { font-size: 0.9375rem; color: var(--color-text-muted); margin-bottom: 28px; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item[open] { box-shadow: var(--shadow-md); }
.faq-item[open] > summary { border-bottom: 1px solid var(--color-border); }

.faq-question {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  gap: 16px;
  transition: color var(--transition);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { color: var(--color-primary); }
.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  background: var(--color-bg-alt);
  border-radius: 50%;
  position: relative;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--color-primary);
  border-radius: 2px;
}
.faq-icon::before { width: 8px; height: 2px; }
.faq-icon::after  { width: 2px; height: 8px; transition: transform var(--transition); }
details[open] .faq-icon::after { transform: rotate(90deg); }

.faq-answer { padding: 16px 20px; }
.faq-answer p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.faq-answer p strong { color: var(--color-text); }

.btn-faq-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-faq-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(27,79,219,.35);
}

/* ── 21. Footer ────────────────────────────────────────────────────────── */
footer {
  background: var(--color-bg-footer);
  padding: 48px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 24px;
}
.footer-brand {}
.footer-logo-text {
  font-size: 1.0625rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
  display: block;
  margin-bottom: 10px;
}
.footer-brand-desc {
  font-size: 0.875rem;
  color: rgba(255,255,255,.45);
  line-height: 1.65;
  max-width: 400px;
}
.footer-legal-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: right;
}
.footer-legal-col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,.55);
  transition: color var(--transition);
}
.footer-legal-col a:hover { color: #fff; }
.footer-credit {
  font-size: 0.8125rem;
  color: rgba(255,255,255,.35);
  line-height: 1.6;
  max-width: 320px;
}
.footer-credit a { color: var(--color-accent); }
.footer-credit a:hover { color: #fff; }
.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,.25);
}

/* ── 22. WhatsApp float ────────────────────────────────────────────────── */
.whatsapp-btn {
  position: fixed;
  bottom: var(--wa-btn-bottom);
  right: var(--wa-btn-right);
  width: var(--wa-btn-size);
  height: var(--wa-btn-size);
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  transition: transform var(--transition), box-shadow var(--transition);
  z-index: 900;
}
.whatsapp-btn svg { width: 28px; height: 28px; fill: #fff; }
.whatsapp-btn:hover { transform: scale(1.08); box-shadow: 0 8px 24px rgba(0,0,0,.25); }

/* ── 23. Back to top ───────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--back-top-bottom);
  right: var(--back-top-right);
  width: var(--back-top-size);
  height: var(--back-top-size);
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  z-index: 899;
  box-shadow: var(--shadow-sm);
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.progress-ring { position: absolute; inset: -2px; width: calc(100% + 4px); height: calc(100% + 4px); }
.ring-bg { fill: none; stroke: var(--color-border); stroke-width: 2; }
.ring-progress { fill: none; stroke: var(--color-primary); stroke-width: 2; stroke-linecap: round; transition: stroke-dashoffset 0.1s; }
.arrow-up { width: 18px; height: 18px; color: var(--color-text); position: relative; z-index: 1; }

/* ── 24. Animaciones ───────────────────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-animate].in-view {
  opacity: 1;
  transform: none;
}
[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }

/* ── 25. Responsive ────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .faq-intro { position: static; }
  .steps-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-legal-col { text-align: left; }
  .footer-credit { max-width: none; }
}

@media (max-width: 640px) {
  .calc-card { padding: 24px 20px; }
  .lead-card { padding: 24px 20px; }
  .form-grid-3 { grid-template-columns: 1fr; }
  .comparison-grid { grid-template-columns: 1fr; }
  .lead-grid { grid-template-columns: 1fr; }
  .form-actions { flex-direction: column; }
  .price-main { font-size: 1.375rem; }
  .rec-grid { grid-template-columns: 1fr; }
  .recommendation-block { padding: 24px 20px; }
  .result-bottom { flex-direction: column; align-items: flex-start; }
  .features-grid { grid-template-columns: 1fr; }
  .nav-hamburger { display: flex; }
  .btn-nav { display: none; }
}

@media (max-width: 480px) {
  .calc-page { padding-top: calc(var(--nav-height) + 32px); }
  section { padding: 56px 0; }
  .steps-grid { gap: 16px; }
}

/* ── Divider de contacto dentro del form ───────────────────────── */
.contact-fields-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 20px;
  color: var(--color-text-subtle);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.contact-fields-divider::before,
.contact-fields-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}