/* ====================================================================
   CALCUS · Propuesta C — Monocromo + Lima Eléctrica
   Tokens (variables CSS) + dark mode opt-in.
   Mantén los nombres de variable que tu PHP ya consume
   (--primary, --bg, --text, --text-muted, --border, --focus-ring,
   --positive, --negative).
==================================================================== */

/* Fuentes: las carga header.php con <link preload+stylesheet> optimizado.
   No usar @import aquí (bloquea render y duplica la petición). */

/* ============================================================
   Propuesta C — Monocromo + Lima Eléctrica
   Aplicada a Home + página /calculadoras/sueldo-nomina/sueldo-neto/
============================================================ */
:root{
  --gray-0:#FFFFFF;
  --gray-50:#FAFAFA;
  --gray-100:#F4F4F4;
  --gray-200:#E5E5E5;
  --gray-300:#D1D1D1;
  --gray-400:#A3A3A3;
  --gray-500:#737373;
  --gray-600:#525252;
  --gray-700:#2E2E2E;
  --gray-800:#1A1A1A;
  --gray-900:#0A0A0A;

  --lime-400:#D9F558;
  --lime-500:#C4E63B;
  --lime-100:#F0FACB;

  --bg:var(--gray-50);
  --surface:var(--gray-0);
  --surface-2:#FFFFFF;
  --border:var(--gray-200);
  --border-strong:var(--gray-300);
  --text:var(--gray-900);
  --text-muted:#686868;    /* AA (4.5+) también sobre superficies grises #EDEDED/#F3F3F3 */
  --text-subtle:#6E6E6E;   /* AA sobre --bg #FAFAFA — #767676 se quedaba en 4.35 */
  --primary:var(--gray-900);
  --primary-ink:#FFFFFF;
  --accent:var(--lime-400);
  --focus-ring:var(--gray-900);
  --positive:#197A4B;
  --negative:#8E2A1F;

  --r-sm:3px; --r-md:6px; --r-lg:8px; --r-xl:10px;
  --shadow-sm:0 1px 0 rgba(0,0,0,.04);
  --shadow-md:0 1px 2px rgba(0,0,0,.05), 0 12px 28px -16px rgba(0,0,0,.18);

  --display: 'Space Grotesk', system-ui, sans-serif;
  --sans: 'Inter Tight', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html,body{ margin:0; padding:0; background:var(--bg); color:var(--text); font-family:var(--sans); -webkit-font-smoothing:antialiased; line-height:1.5; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; cursor:pointer; }
img{ max-width:100%; display:block; }
input,select,textarea{ font:inherit; color:inherit; }
.tnum, .mono{ font-variant-numeric:tabular-nums; font-feature-settings:"tnum" 1; }
.mono{ font-family:var(--mono); }
.eyebrow{ font:500 11px/1 var(--mono); letter-spacing:.14em; text-transform:uppercase; color:var(--text-muted); }
.micro{ font:500 10px/1.2 var(--mono); letter-spacing:.12em; text-transform:uppercase; color:var(--text-subtle); }

/* Focus visible — anillo de 2px en gris-900 */
:where(button, a, input, select, textarea, summary):focus-visible{
  outline:2px solid var(--focus-ring); outline-offset:2px; border-radius:3px;
}

/* ============================================================
   DARK MODE
   Opt-in vía botón ☀/🌙. No automático por prefers-color-scheme,
   tal y como pide el brief.
============================================================ */
:root[data-theme="dark"]{
  color-scheme:dark;

  --bg:#0A0A0A;
  --surface:#151515;
  --surface-2:#1A1A1A;
  --border:#262626;
  --border-strong:#3A3A3A;

  --text:#FAFAFA;
  --text-muted:#A3A3A3;
  --text-subtle:#909090;   /* AA en #0A0A0A — antes #6E6E6E fallaba AA */

  --primary:var(--lime-400);
  --primary-ink:var(--gray-900);
  --focus-ring:var(--lime-400);

  /* Semánticos legibles sobre superficies oscuras (los de light fallan AA en dark) */
  --positive:#4EC98D;
  --negative:#E8826F;

  --shadow-sm:0 1px 0 rgba(0,0,0,.4);
  --shadow-md:0 1px 2px rgba(0,0,0,.4), 0 14px 32px -16px rgba(0,0,0,.6);
}

/* Encabezado y h1 que en light tienen color gray-900 fijo */
[data-theme="dark"] .home-hero h1,
[data-theme="dark"] .sn-head   h1{ color:var(--text); }

/* Header sticky — usa color-mix sobre --bg, ya cambia solo, pero subimos opacidad */
[data-theme="dark"] .header{ background:color-mix(in oklab, var(--bg) 90%, transparent); }

/* Marca: en dark mode invertimos para que el cuadradito sea lima sólido */
[data-theme="dark"] .brand .mark{ background:var(--lime-400); color:var(--gray-900); }

/* Cabeceras de tabla y panel de preview */
[data-theme="dark"] .bd th,
[data-theme="dark"] .tax-table th,
[data-theme="dark"] .preview-card .pc-head{ background:#101010; color:var(--text-muted); }
[data-theme="dark"] .bd tr:nth-child(even) td{ background:rgba(255,255,255,.025); }

/* Inputs y chips */
[data-theme="dark"] .input{ background:var(--surface-2); color:var(--text); border-color:var(--border-strong); }
[data-theme="dark"] .input:focus{ border-color:var(--lime-400); box-shadow:0 0 0 3px color-mix(in oklab, var(--lime-400) 18%, transparent); }
[data-theme="dark"] .chip{ background:var(--surface); color:var(--text-muted); border-color:var(--border); }
[data-theme="dark"] .chip:hover{ border-color:var(--lime-400); color:var(--text); }
[data-theme="dark"] .chip.on{ background:var(--lime-400); color:var(--gray-900); border-color:var(--lime-400); }
[data-theme="dark"] .seg-group{ background:var(--surface); border-color:var(--border-strong); }
[data-theme="dark"] .seg-group label:has(input:checked){ background:var(--surface-2); color:var(--text); border-color:var(--border-strong); }
[data-theme="dark"] .seg-group label{ color:var(--text-muted); }
[data-theme="dark"] .radio-row label{ background:var(--surface); border-color:var(--border); color:var(--text); }
[data-theme="dark"] .radio-row label:has(input:checked){ background:var(--surface-2); border-color:var(--lime-400); }
[data-theme="dark"] .stepper{ background:var(--surface-2); border-color:var(--border-strong); }
[data-theme="dark"] .stepper button:hover{ background:var(--border); }

/* Iconos / micro-superficies */
[data-theme="dark"] .cc-icon{ background:#202020; color:var(--text); }
[data-theme="dark"] .field-help{ background:var(--surface-2); border-color:var(--border-strong); color:var(--text-muted); }
[data-theme="dark"] .kbd{ background:var(--surface-2); border-color:var(--border-strong); color:var(--text-muted); }

/* Cards · hover */
[data-theme="dark"] .cc:hover{ border-color:var(--lime-400); }
[data-theme="dark"] .test-card{ background:var(--surface-2); }
[data-theme="dark"] .guia-card .stripe{ background:#1E1E1E; color:var(--text-muted); }

/* Bullets y enlaces "more" — se basaban en gray-900 sólido */
[data-theme="dark"] .bn .card ul li::before{ background:var(--lime-400); }
[data-theme="dark"] .home-section-head .more{ border-bottom-color:var(--lime-400); color:var(--text); }
[data-theme="dark"] .nb-card .arrow{ background:repeating-linear-gradient(to right, var(--border-strong) 0 4px, transparent 4px 8px); }
[data-theme="dark"] .nb-card .arrow::after{ color:var(--lime-400); background:var(--surface-2); }

/* Tres pasos · número final con badge lima · sin tocar */
[data-theme="dark"] .three-step .v.pos,
[data-theme="dark"] .three-step .v{ color:var(--text); }
[data-theme="dark"] .three-step .v.neg{ color:#E8826F; }
[data-theme="dark"] .three-step{ background:var(--surface-2); }

/* Tablas */
[data-theme="dark"] .bd, [data-theme="dark"] .tax-table{ background:var(--surface-2); border-color:var(--border); }
[data-theme="dark"] .bd td, [data-theme="dark"] .tax-table td,
[data-theme="dark"] .bd th, [data-theme="dark"] .tax-table th{ border-color:var(--border); }
/* Fila destacada (30 000) en la tabla orientativa */
.tax-table tr.highlight td{ background:var(--lime-100); color:var(--gray-900); }
[data-theme="dark"] .tax-table tr.highlight td{ background:var(--lime-400); color:var(--gray-900); }
[data-theme="dark"] .tax-table tr.highlight td strong{ color:var(--gray-900); }
[data-theme="dark"] .bd td.neg, [data-theme="dark"] .bd td.pos{ color:#E8826F; }
[data-theme="dark"] .bd td.pos{ color:var(--lime-400); }

/* SS list · totales sobre lima en dark también */
[data-theme="dark"] .ss-list{ background:var(--surface-2); border-color:var(--border); }
[data-theme="dark"] .ss-list .it{ border-color:var(--border); color:var(--text); }
[data-theme="dark"] .ss-list .it:last-child{ background:var(--lime-400); color:var(--gray-900); }
[data-theme="dark"] .ss-list .it:last-child .v,
[data-theme="dark"] .ss-list .it:last-child .k{ color:var(--gray-900); }

/* CCAA · invertimos badge oscuro a claro para que respire */
[data-theme="dark"] .ccaa-card{ background:var(--surface-2); }
[data-theme="dark"] .ccaa-card h3{ color:var(--text-muted); border-color:var(--border); }
[data-theme="dark"] .ccaa-card .badge{ background:var(--text); color:var(--gray-900); }
[data-theme="dark"] .ccaa-card .badge.up{ background:var(--lime-400); color:var(--gray-900); }

/* Note (recuadro lima) — en dark se vuelve oscuro con borde lima */
[data-theme="dark"] .note{
  background:rgba(217,245,88,.05); color:var(--text);
  border-left-color:var(--lime-400);
}
[data-theme="dark"] .note strong{ color:var(--lime-400); }

/* FAQ */
[data-theme="dark"] .faq{ background:var(--surface-2); border-color:var(--border); }
[data-theme="dark"] .faq details{ border-color:var(--border); }
[data-theme="dark"] .faq summary{ color:var(--text); }
[data-theme="dark"] .faq summary .ico{ background:transparent; border-color:var(--border-strong); color:var(--text-muted); }
[data-theme="dark"] .faq details[open] summary .ico{ background:var(--lime-400); color:var(--gray-900); border-color:var(--lime-400); }

/* Pills de trust */
[data-theme="dark"] .sn-pill,
[data-theme="dark"] .home-hero-eyebrow{ background:var(--surface-2); border-color:var(--border-strong); color:var(--text); }
[data-theme="dark"] .sn-pill.dotted{ color:var(--text-muted); border-color:var(--border); }
[data-theme="dark"] .micro, [data-theme="dark"] .eyebrow{ color:var(--text-muted); }

/* Preview side card */
[data-theme="dark"] .preview-card{ background:var(--surface-2); border-color:var(--border); }
[data-theme="dark"] .preview-row{ border-bottom-color:var(--border); }

/* Botones secundarios */
[data-theme="dark"] .btn-ghost{ background:transparent; border-color:var(--border-strong); color:var(--text); }
[data-theme="dark"] .btn-ghost:hover{ border-color:var(--lime-400); }

/* Header / nav */
[data-theme="dark"] .nav a:hover{ color:var(--lime-400); }

/* Mobile sticky en dark */
@media (max-width:640px){
  [data-theme="dark"] .mob-sticky{ background:var(--surface-2); border-top-color:var(--border); }
}

/* Demo bar tape + footer — ya son siempre oscuros, no necesitan cambios */

/* Smooth flip transition cuando se cambia tema */
.theme-transition,
.theme-transition *,
.theme-transition *::before,
.theme-transition *::after{
  transition:background-color .25s ease, color .25s ease, border-color .25s ease, fill .25s ease !important;
}

/* ============================================================
   Action toolbar · imprimir / compartir / copiar / pdf
============================================================ */
.result-toolbar{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  padding:14px 18px; background:var(--surface-2);
  border:1px solid var(--border); border-radius:8px;
}
.result-toolbar .label{
  font:500 11px/1 var(--mono); letter-spacing:.12em; text-transform:uppercase;
  color:var(--text-muted); padding-right:14px; margin-right:6px;
  border-right:1px solid var(--border);
}
.act-btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:0 14px; min-height:40px;
  background:var(--surface); border:1px solid var(--border); border-radius:6px;
  color:var(--text); font:500 13px/1 var(--sans); cursor:pointer;
  transition:border-color .15s, background .15s, color .15s;
}
.act-btn:hover{ border-color:var(--gray-900); }
.act-btn svg{ width:16px; height:16px; stroke:currentColor; stroke-width:1.6; fill:none; stroke-linecap:round; stroke-linejoin:round; }
.act-btn.primary{ background:var(--gray-900); color:#fff; border-color:var(--gray-900); margin-left:auto; }
.act-btn.primary:hover{ background:#000; }
[data-theme="dark"] .act-btn{ background:var(--surface); color:var(--text); border-color:var(--border-strong); }
[data-theme="dark"] .act-btn:hover{ border-color:var(--lime-400); }
[data-theme="dark"] .act-btn.primary{ background:var(--lime-400); color:var(--gray-900); border-color:var(--lime-400); }
[data-theme="dark"] .act-btn.primary:hover{ background:var(--lime-500); }

/* ============================================================
   Affiliate cards · rediseñados sobrios (no badges "¡10€ GRATIS!")
============================================================ */
.affiliate-wrap{ padding:32px 0; }
.affiliate-card{
  border:1px solid var(--border); border-radius:10px; padding:32px;
  background:var(--surface-2);
  display:grid; grid-template-columns:1fr auto; gap:36px; align-items:center;
  position:relative;
}
.affiliate-card .aff-tag{
  position:absolute; top:18px; right:24px;
  font:500 10px/1 var(--mono); letter-spacing:.16em; text-transform:uppercase;
  color:var(--text-subtle);
}
.aff-eyebrow{ font:500 11px/1 var(--mono); letter-spacing:.14em; text-transform:uppercase; color:var(--text-muted); }
.aff-brand-row{ display:flex; align-items:center; gap:14px; margin:14px 0 0; }
.aff-logo{
  width:42px; height:42px; border-radius:8px;
  background:var(--gray-900); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font:600 14px/1 var(--display); letter-spacing:-0.02em; flex:0 0 auto;
}
.aff-logo.lime{ background:var(--lime-400); color:var(--gray-900); }
.aff-logo.teal{ background:#1B3A3A; color:#fff; }
.aff-name{ font:600 19px/1 var(--display); letter-spacing:-0.015em; }
.aff-rating{ font:500 12px/1 var(--mono); color:var(--text-muted); display:inline-flex; gap:6px; align-items:center; }
.aff-rating .stars{ color:var(--text); letter-spacing:.06em; }
.aff-h{ margin:18px 0 8px; font:600 28px/1.15 var(--display); letter-spacing:-0.025em; max-width:32ch; }
.aff-desc{ margin:0; font:400 15px/1.55 var(--sans); color:var(--text-muted); max-width:60ch; }
.aff-features{ display:flex; gap:8px; flex-wrap:wrap; margin-top:18px; }
.aff-feat{
  font:500 12px/1 var(--mono); padding:7px 12px;
  background:var(--bg); border:1px solid var(--border); border-radius:99px;
  color:var(--text);
}
.aff-cta-row{ margin-top:22px; display:flex; gap:20px; align-items:center; flex-wrap:wrap; }
.aff-cta-row .btn-primary{ height:46px; padding:0 20px; font-size:14px; }
.aff-howto{
  font:500 13px/1 var(--mono); color:var(--text);
  border-bottom:1px solid var(--border-strong); padding-bottom:3px;
  display:inline-flex; align-items:center; gap:6px;
}
.aff-howto:hover{ border-bottom-color:var(--text); }
.aff-side{
  background:var(--gray-900); color:#fff; border-radius:8px; padding:28px 24px;
  display:flex; flex-direction:column; gap:8px;
  min-width:200px; align-items:flex-start; justify-content:center;
  align-self:stretch;
}
.aff-side .lbl{ font:500 10px/1 var(--mono); letter-spacing:.14em; text-transform:uppercase; color:#9a9a9a; }
.aff-side .big{ font:500 64px/1 var(--display); color:var(--lime-400); letter-spacing:-0.045em; font-variant-numeric:tabular-nums; margin:6px 0; }
.aff-side .sub{ font:500 11px/1 var(--mono); color:#bcbcbc; letter-spacing:.08em; }
.aff-disclaimer{
  margin-top:14px; font:400 12px/1.55 var(--sans); color:var(--text-subtle);
  max-width:90ch; padding:0 4px;
}
.aff-disclaimer strong{ color:var(--text-muted); font-weight:600; }

[data-theme="dark"] .affiliate-card{ background:var(--surface-2); border-color:var(--border); }
[data-theme="dark"] .aff-feat{ background:var(--surface); border-color:var(--border); }
[data-theme="dark"] .aff-logo{ background:var(--lime-400); color:var(--gray-900); }
[data-theme="dark"] .aff-logo.teal{ background:#3A8888; color:var(--gray-900); }
[data-theme="dark"] .aff-side{ background:#000; }

/* ============================================================
   Consejos para negociar · 4 cards en línea
============================================================ */
.nego-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.nego-card{
  background:var(--surface-2); border:1px solid var(--border); border-radius:8px;
  padding:24px; display:flex; flex-direction:column; gap:10px; min-height:200px;
}
.nego-card .n{ font:500 11px/1 var(--mono); letter-spacing:.14em; color:var(--text-subtle); }
.nego-card h3{ font:600 17px/1.25 var(--display); letter-spacing:-0.015em; }
.nego-card p{ margin:0; font:400 13px/1.55 var(--sans); color:var(--text-muted); }

/* ============================================================
   Guía PDF (home) · download invitation
============================================================ */
.guide-card{
  background:var(--gray-900); color:#fff; border-radius:10px; padding:40px 48px;
  display:grid; grid-template-columns:auto 1fr auto; gap:36px; align-items:center;
}
.guide-mock{
  width:140px; height:180px; flex:0 0 auto;
  background:var(--lime-400); border-radius:6px; position:relative;
  display:flex; flex-direction:column; padding:18px; gap:6px;
  box-shadow:0 12px 28px -8px rgba(0,0,0,.6);
}
.guide-mock::after{
  content:""; position:absolute; top:-8px; right:-8px; width:90%; height:8px;
  background:rgba(255,255,255,.06); border-radius:6px 6px 0 0;
}
.guide-mock .gm-eye{ font:500 9px/1 var(--mono); letter-spacing:.14em; color:rgba(0,0,0,.6); text-transform:uppercase; }
.guide-mock .gm-title{ font:600 18px/1.05 var(--display); color:var(--gray-900); letter-spacing:-0.025em; max-width:14ch; margin-top:auto; }
.guide-mock .gm-pages{ font:500 10px/1 var(--mono); color:rgba(0,0,0,.5); }
.guide-body h2{ color:#fff; margin:0; font:600 30px/1.1 var(--display); letter-spacing:-0.025em; }
.guide-body p{ margin:10px 0 0; font:400 15px/1.55 var(--sans); color:#bcbcbc; max-width:48ch; }
.guide-body .feat{ margin-top:14px; display:flex; gap:8px; flex-wrap:wrap; }
.guide-body .feat span{
  font:500 11px/1 var(--mono); padding:6px 10px;
  background:rgba(255,255,255,.06); color:#e5e5e5;
  border:1px solid rgba(255,255,255,.1); border-radius:99px;
}
.guide-actions{ display:flex; flex-direction:column; gap:10px; align-items:flex-end; }
.guide-actions .btn-primary{ height:50px; padding:0 22px; }
.guide-actions .micro-note{ font:500 11px/1 var(--mono); letter-spacing:.08em; color:#9a9a9a; }

/* Small TR card on home · sober single-row */
.tr-strip{
  background:var(--surface-2); border:1px solid var(--border); border-radius:8px;
  padding:20px 24px;
  display:flex; gap:24px; align-items:center; flex-wrap:wrap;
}
.tr-strip .aff-logo{ width:36px; height:36px; }
.tr-strip .copy{ flex:1; min-width:220px; font:500 14px/1.4 var(--sans); }
.tr-strip .copy strong{ font-weight:600; }
.tr-strip .copy span{ display:block; color:var(--text-muted); font-weight:400; font-size:13px; margin-top:4px; }
.tr-strip .pub{ font:500 10px/1 var(--mono); letter-spacing:.14em; color:var(--text-subtle); text-transform:uppercase; }

/* Explora más calculadoras (final mini-section) */
.explore-mini{
  display:flex; gap:14px; flex-wrap:wrap; padding:24px 0;
}
.explore-mini a{
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 14px; border:1px solid var(--border-strong); border-radius:99px;
  font:500 13px/1 var(--mono); letter-spacing:.04em; color:var(--text);
}
.explore-mini a:hover{ border-color:var(--lime-400); color:var(--text); }

@media (max-width:1024px){
  .affiliate-card{ grid-template-columns:1fr; gap:20px; }
  .nego-grid{ grid-template-columns:1fr 1fr; }
  .guide-card{ grid-template-columns:1fr; padding:28px; gap:24px; }
  .guide-actions{ align-items:flex-start; }
}
@media (max-width:640px){
  .nego-grid{ grid-template-columns:1fr; }
  .affiliate-card{ padding:22px; }
  .aff-h{ font-size:22px; }
  .result-toolbar .label{ display:none; }
  .act-btn.primary{ margin-left:0; }
}