/* ==========================================================================
   Hoja de estilos principal
   1. Tokens de diseño (colores, tipografía, espaciado, radios, sombras)
   2. Base y utilidades
   3. Estructura: cabecera, navegación, buscador, pie
   4. Componentes: botones, tarjetas, avisos, migas de pan
   5. Páginas: inicio, listados, artículos
   6. Herramientas: zona de archivos, formularios, resultados
   7. Movimiento reducido e impresión
   Enfoque «mobile first»: los estilos base son para móvil y las consultas
   min-width añaden la reorganización para pantallas mayores.
   ========================================================================== */

/* 1. Tokens ------------------------------------------------------------- */
:root {
  color-scheme: light;
  --c-bg: #f6f7f9;
  --c-surface: #ffffff;
  --c-surface-2: #eef1f4;
  --c-border: #d9dfe6;
  --c-border-strong: #b7c0cb;
  --c-text: #17202b;
  --c-text-muted: #4d5968;
  --c-accent: #0a6a70;
  --c-accent-hover: #075459;
  --c-accent-soft: #e2f1f1;
  --c-on-accent: #ffffff;
  --c-focus: #0a6a70;
  --c-info-bg: #e8f0fb;
  --c-info-border: #9db8e0;
  --c-info-text: #1d3f72;
  --c-warn-bg: #fdf3e1;
  --c-warn-border: #e2b25f;
  --c-warn-text: #6b4100;
  --c-danger-bg: #fdecea;
  --c-danger-border: #eba59e;
  --c-danger-text: #9c1c12;
  --c-success-bg: #e6f5ec;
  --c-success-border: #8fcca6;
  --c-success-text: #145c33;
  --c-checker-a: #ffffff;
  --c-checker-b: #e3e7ec;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, "Liberation Mono", monospace;
  --fs-sm: 0.875rem;
  --fs-base: 1.0625rem;
  --fs-lg: 1.1875rem;
  --fs-h3: 1.1875rem;
  --fs-h2: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem);
  --fs-h1: clamp(1.875rem, 1.45rem + 1.9vw, 2.75rem);
  --lh-tight: 1.2;
  --lh-base: 1.6;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgb(16 24 40 / 0.06);
  --shadow: 0 1px 3px rgb(16 24 40 / 0.08), 0 4px 12px rgb(16 24 40 / 0.05);
  --shadow-lg: 0 8px 28px rgb(16 24 40 / 0.14);

  --container: 72rem;
  --container-narrow: 46rem;
  --gutter: 1rem;
  --header-h: 3.75rem;
  --transition: 150ms ease;
}

/* Tema oscuro: por preferencia del sistema o elegido manualmente. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --c-bg: #0f1318;
    --c-surface: #161b22;
    --c-surface-2: #1d242d;
    --c-border: #2c3642;
    --c-border-strong: #45515f;
    --c-text: #e6eaef;
    --c-text-muted: #a4aebb;
    --c-accent: #5ccac5;
    --c-accent-hover: #86dbd7;
    --c-accent-soft: #15302f;
    --c-on-accent: #04201f;
    --c-focus: #7fdcd8;
    --c-info-bg: #142338;
    --c-info-border: #34557f;
    --c-info-text: #b9d0f0;
    --c-warn-bg: #2b2111;
    --c-warn-border: #7a5a22;
    --c-warn-text: #f1d39b;
    --c-danger-bg: #2f1715;
    --c-danger-border: #823530;
    --c-danger-text: #f6b8b1;
    --c-success-bg: #12271b;
    --c-success-border: #2f6a46;
    --c-success-text: #a6e2bd;
    --c-checker-a: #2a313a;
    --c-checker-b: #20262e;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow: 0 1px 3px rgb(0 0 0 / 0.4), 0 4px 12px rgb(0 0 0 / 0.25);
    --shadow-lg: 0 8px 28px rgb(0 0 0 / 0.5);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --c-bg: #0f1318;
  --c-surface: #161b22;
  --c-surface-2: #1d242d;
  --c-border: #2c3642;
  --c-border-strong: #45515f;
  --c-text: #e6eaef;
  --c-text-muted: #a4aebb;
  --c-accent: #5ccac5;
  --c-accent-hover: #86dbd7;
  --c-accent-soft: #15302f;
  --c-on-accent: #04201f;
  --c-focus: #7fdcd8;
  --c-info-bg: #142338;
  --c-info-border: #34557f;
  --c-info-text: #b9d0f0;
  --c-warn-bg: #2b2111;
  --c-warn-border: #7a5a22;
  --c-warn-text: #f1d39b;
  --c-danger-bg: #2f1715;
  --c-danger-border: #823530;
  --c-danger-text: #f6b8b1;
  --c-success-bg: #12271b;
  --c-success-border: #2f6a46;
  --c-success-text: #a6e2bd;
  --c-checker-a: #2a313a;
  --c-checker-b: #20262e;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
  --shadow: 0 1px 3px rgb(0 0 0 / 0.4), 0 4px 12px rgb(0 0 0 / 0.25);
  --shadow-lg: 0 8px 28px rgb(0 0 0 / 0.5);
}

/* 2. Base ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + var(--space-4)); }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  overflow-wrap: break-word;
}
main { flex: 1 0 auto; outline: none; }
img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, h4 { line-height: var(--lh-tight); letter-spacing: -0.01em; margin: 0 0 var(--space-3); text-wrap: balance; }
h1 { font-size: var(--fs-h1); font-weight: 750; }
h2 { font-size: var(--fs-h2); font-weight: 700; }
h3 { font-size: var(--fs-h3); font-weight: 650; }
p { margin: 0 0 var(--space-4); }
a { color: var(--c-accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--c-accent-hover); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 2px; border-radius: 3px; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
code, kbd { font-family: var(--font-mono); font-size: 0.92em; }
code { background: var(--c-surface-2); padding: 0.1em 0.35em; border-radius: 4px; }
kbd { border: 1px solid var(--c-border-strong); border-bottom-width: 2px; border-radius: 4px; padding: 0.05em 0.4em; background: var(--c-surface); }
hr { border: 0; border-top: 1px solid var(--c-border); margin: var(--space-6) 0; }
[hidden] { display: none !important; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: calc(var(--container-narrow) + 2 * var(--gutter)); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--space-4); top: -100px; z-index: 100;
  background: var(--c-accent); color: var(--c-on-accent); padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
  font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: var(--space-2); color: var(--c-on-accent); }
.icon { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.eyebrow, .card__eyebrow { font-size: var(--fs-sm); font-weight: 600; color: var(--c-text-muted); margin: 0 0 var(--space-2); letter-spacing: 0.01em; }
.eyebrow a { color: inherit; text-decoration: none; }
.eyebrow a:hover { color: var(--c-accent); text-decoration: underline; }
.lead { font-size: var(--fs-lg); color: var(--c-text-muted); max-width: 44rem; }
.placeholder { background: var(--c-warn-bg); color: var(--c-warn-text); border: 1px dashed var(--c-warn-border); padding: 0 0.3em; border-radius: 4px; font-weight: 600; }
.section { padding-block: var(--space-7); }
.section--alt { background: var(--c-surface); border-block: 1px solid var(--c-border); }
.section__head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: var(--space-2) var(--space-5); margin-bottom: var(--space-5); }
.section__head h2 { margin: 0; }
.section__head p { margin: 0; color: var(--c-text-muted); }
.section__link { display: inline-flex; align-items: center; gap: var(--space-1); font-weight: 600; text-decoration: none; }
.section__link:hover { text-decoration: underline; }

/* 3. Cabecera -------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--c-surface) 92%, transparent);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: saturate(1.4) blur(8px);
}
@supports not (background: color-mix(in srgb, red 50%, transparent)) {
  .site-header { background: var(--c-surface); }
}
.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "brand actions" "search search" "nav nav";
  align-items: center;
  column-gap: var(--space-3);
  min-height: var(--header-h);
}
.brand { grid-area: brand; display: inline-flex; align-items: center; gap: var(--space-2); color: var(--c-text); text-decoration: none; font-weight: 750; font-size: 1.125rem; letter-spacing: -0.015em; padding-block: var(--space-2); width: max-content; }
.brand:hover { color: var(--c-text); }
.brand__mark { width: 30px; height: 30px; }
.brand__mark rect { fill: var(--c-accent); }
.brand__mark path { fill: none; stroke: var(--c-on-accent); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.site-header__search { grid-area: search; padding-bottom: var(--space-3); }
.site-header__actions { grid-area: actions; display: flex; gap: var(--space-1); }
.icon-btn {
  display: inline-grid; place-items: center; width: 44px; height: 44px; padding: 0;
  border: 1px solid transparent; border-radius: var(--radius-sm); background: transparent; color: var(--c-text);
  transition: background var(--transition), border-color var(--transition);
}
.icon-btn:hover { background: var(--c-surface-2); border-color: var(--c-border); }
.icon-btn .icon { width: 22px; height: 22px; }
.theme-toggle .icon--sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon--sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon--moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon--sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon--moon { display: none; }
}
/* Sin JavaScript el selector de tema y el botón de menú no funcionarían: se ocultan. */
:root:not(.js) .theme-toggle, :root:not(.js) .nav-toggle { display: none; }
.nav-toggle .icon--close { display: none; }
.nav-toggle[aria-expanded="true"] .icon--menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon--close { display: block; }

.site-nav { grid-area: nav; }
.site-nav__list { list-style: none; margin: 0; padding: 0 0 var(--space-3); display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); }
.site-nav a {
  display: block; padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm);
  color: var(--c-text); text-decoration: none; font-weight: 550;
}
.site-nav a:hover { background: var(--c-surface-2); color: var(--c-text); }
.site-nav a[aria-current="page"] { color: var(--c-accent); background: var(--c-accent-soft); }

/* Menú móvil (solo con JavaScript; sin él la navegación se muestra siempre) */
@media (max-width: 899.98px) {
  :root.js .site-nav { display: none; }
  :root.js .site-nav.is-open { display: block; border-top: 1px solid var(--c-border); }
  :root.js .site-nav__list { flex-direction: column; padding: var(--space-3) 0 var(--space-4); }
  :root.js .site-nav a { padding: var(--space-3); font-size: var(--fs-lg); }
}
@media (min-width: 900px) {
  .site-header__inner { grid-template-columns: auto 1fr minmax(14rem, 20rem) auto; grid-template-areas: "brand nav search actions"; column-gap: var(--space-5); }
  .site-header__search { padding-bottom: 0; }
  .site-nav__list { padding: 0; flex-wrap: nowrap; }
  .nav-toggle { display: none; }
}

/* Buscador */
.search { position: relative; display: flex; gap: var(--space-2); }
.search__field { position: relative; flex: 1; min-width: 0; }
.search__icon { position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); color: var(--c-text-muted); pointer-events: none; }
.search__input {
  width: 100%; min-height: 44px; padding: 0.55rem 0.9rem 0.55rem 2.6rem;
  border: 1px solid var(--c-border-strong); border-radius: var(--radius); background: var(--c-surface);
  appearance: none;
}
.search__input::placeholder { color: var(--c-text-muted); opacity: 1; }
.search__input:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 0; border-color: var(--c-accent); }
.search__input::-webkit-search-cancel-button { cursor: pointer; }
.search--hero .search__input, .search--page .search__input { min-height: 54px; font-size: var(--fs-lg); padding-left: 2.9rem; }
.search--hero .search__icon, .search--page .search__icon { left: 0.9rem; width: 1.4em; height: 1.4em; }
.search__panel {
  position: absolute; z-index: 60; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: var(--space-2); max-height: min(70vh, 28rem); overflow-y: auto;
}
.search__results { list-style: none; margin: 0; padding: 0; }
.search__option {
  display: block; padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm);
  color: var(--c-text); text-decoration: none; cursor: pointer;
}
.search__option:hover, .search__option[aria-selected="true"] { background: var(--c-accent-soft); color: var(--c-text); }
.search__option-title { display: block; font-weight: 600; line-height: 1.35; }
.search__option-meta { display: block; font-size: var(--fs-sm); color: var(--c-text-muted); }
.search__message { margin: var(--space-2) var(--space-3); font-size: var(--fs-sm); color: var(--c-text-muted); }
.search__all { display: block; margin-top: var(--space-1); padding: var(--space-2) var(--space-3); font-size: var(--fs-sm); font-weight: 600; border-top: 1px solid var(--c-border); }
mark.hl { background: color-mix(in srgb, var(--c-accent) 22%, transparent); color: inherit; border-radius: 2px; padding: 0; }

/* Pie */
.site-footer { margin-top: var(--space-8); background: var(--c-surface); border-top: 1px solid var(--c-border); font-size: 0.9375rem; }
.footer-grid { display: grid; gap: var(--space-6); padding-block: var(--space-7) var(--space-6); grid-template-columns: 1fr; }
.footer-about p { color: var(--c-text-muted); max-width: 28rem; }
.footer-note { display: flex; gap: var(--space-2); align-items: flex-start; }
.footer-note .icon { margin-top: 0.2em; color: var(--c-accent); }
.footer-nav h2 { font-size: 0.9375rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--c-text-muted); margin-bottom: var(--space-3); }
.footer-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-1); }
.footer-nav a, .link-btn { color: var(--c-text); text-decoration: none; display: inline-block; padding-block: 0.3rem; }
.footer-nav a:hover, .link-btn:hover { color: var(--c-accent); text-decoration: underline; }
.link-btn { background: none; border: 0; padding-inline: 0; text-align: left; }
.footer-bottom { border-top: 1px solid var(--c-border); padding-block: var(--space-4); color: var(--c-text-muted); font-size: var(--fs-sm); }
.footer-bottom p { margin: 0; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }

/* 4. Componentes ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: 0.55rem 1.1rem; border-radius: var(--radius);
  border: 1px solid var(--c-border-strong); background: var(--c-surface); color: var(--c-text);
  font-weight: 600; line-height: 1.2; text-decoration: none; white-space: nowrap;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.btn:hover { background: var(--c-surface-2); color: var(--c-text); text-decoration: none; }
.btn--primary { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-on-accent); }
.btn--primary:hover { background: var(--c-accent-hover); border-color: var(--c-accent-hover); color: var(--c-on-accent); }
.btn--ghost { border-color: transparent; background: transparent; }
.btn--ghost:hover { background: var(--c-surface-2); }
.btn--sm { min-height: 36px; padding: 0.35rem 0.75rem; font-size: var(--fs-sm); }
.btn--icon { padding: 0; width: 40px; min-height: 40px; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }
.btn.is-busy { position: relative; color: transparent !important; pointer-events: none; }
.btn.is-busy::after {
  content: ""; position: absolute; width: 1.1rem; height: 1.1rem; border-radius: 50%;
  border: 2px solid var(--c-on-accent); border-right-color: transparent; animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.card-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .card-grid--tools, .card-grid--categories { grid-template-columns: repeat(3, 1fr); } }
.card {
  position: relative; display: flex; flex-direction: column; gap: var(--space-2);
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: var(--space-5); box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: var(--c-border-strong); box-shadow: var(--shadow); }
.card:focus-within { border-color: var(--c-accent); }
.card__title { margin: 0; font-size: var(--fs-h3); }
.card__link { color: var(--c-text); text-decoration: none; }
.card__link:hover { color: var(--c-accent); }
/* Toda la tarjeta es clicable, pero el enlace real (y su foco) es el título. */
.card__link::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.card__link:focus-visible { outline: none; }
.card__link:focus-visible::after { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.card__text { color: var(--c-text-muted); margin: 0; }
.card__eyebrow { margin: 0; }
.card__icon, .category-card__icon, .page-hero__icon {
  display: inline-grid; place-items: center; width: 44px; height: 44px; flex: none;
  border-radius: var(--radius); background: var(--c-accent-soft); color: var(--c-accent);
}
.card__icon .icon, .category-card__icon .icon { width: 24px; height: 24px; }
.tool-card { flex-direction: row; align-items: flex-start; gap: var(--space-4); }
.card__body { display: grid; gap: var(--space-1); }
.card__more { margin-top: auto; padding-top: var(--space-2); display: inline-flex; align-items: center; gap: var(--space-1); font-weight: 600; color: var(--c-accent); font-size: var(--fs-sm); }
.category-card__count { margin: auto 0 0; font-size: var(--fs-sm); color: var(--c-text-muted); font-weight: 600; }

.notice { display: flex; gap: var(--space-3); padding: var(--space-4); border: 1px solid; border-radius: var(--radius); margin-block: var(--space-4); }
.notice p:last-child { margin-bottom: 0; }
.notice__icon { margin-top: 0.15em; }
.notice__title { font-weight: 700; margin-bottom: var(--space-1); }
.notice--info { background: var(--c-info-bg); border-color: var(--c-info-border); color: var(--c-info-text); }
.notice--warning { background: var(--c-warn-bg); border-color: var(--c-warn-border); color: var(--c-warn-text); }
.notice a { color: inherit; font-weight: 600; }

.breadcrumbs { padding-top: var(--space-4); font-size: var(--fs-sm); }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-1); color: var(--c-text-muted); }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: var(--space-1); color: var(--c-border-strong); }
.breadcrumbs a { color: var(--c-text-muted); padding-block: 0.4rem; display: inline-block; }
.breadcrumbs a:hover { color: var(--c-accent); }
.breadcrumbs [aria-current] { color: var(--c-text); }

.related { margin-top: var(--space-7); padding: var(--space-5); background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-lg); }
.related h2 { font-size: var(--fs-h3); }
.related__list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.related__list a { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-1) var(--space-3); padding: var(--space-2) 0; font-weight: 600; }
.related__type { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--c-text-muted); background: var(--c-surface-2); padding: 0.1rem 0.45rem; border-radius: 4px; }

.ad-slot { margin-block: var(--space-7); padding-top: var(--space-2); border-top: 1px solid var(--c-border); min-height: 120px; }
.ad-slot__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--c-text-muted); margin-bottom: var(--space-2); }
.affiliate-link__tag { display: inline-block; margin-left: 0.4em; font-size: 0.75rem; font-weight: 600; color: var(--c-text-muted); border: 1px solid var(--c-border); border-radius: 4px; padding: 0 0.35em; vertical-align: 0.1em; }

/* 5. Páginas --------------------------------------------------------------- */
.hero { padding-block: var(--space-7) var(--space-6); }
.hero h1 { max-width: 20ch; }
.hero .lead { margin-bottom: var(--space-5); }
.hero .search { max-width: 40rem; }
.hero__shortcuts { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); margin: var(--space-4) 0 0; padding: 0; list-style: none; }
.hero__shortcuts-label { font-size: var(--fs-sm); color: var(--c-text-muted); margin-right: var(--space-1); }
.chip { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 40px; padding: 0.3rem 0.85rem; border: 1px solid var(--c-border); border-radius: 999px; background: var(--c-surface); color: var(--c-text); text-decoration: none; font-size: var(--fs-sm); font-weight: 600; }
.chip:hover { border-color: var(--c-accent); color: var(--c-accent); }
.chip .icon { width: 1.1em; height: 1.1em; color: var(--c-accent); }
@media (min-width: 900px) { .hero { padding-block: var(--space-8) var(--space-7); } }

.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: var(--space-5); }
.steps li { counter-increment: step; position: relative; padding-left: 3.25rem; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: -0.1rem; width: 2.25rem; height: 2.25rem; display: grid; place-items: center;
  border-radius: 50%; background: var(--c-accent-soft); color: var(--c-accent); font-weight: 700;
}
.steps h3 { margin-bottom: var(--space-1); }
.steps p { margin: 0; color: var(--c-text-muted); }
.features { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-4); }
.features li { display: flex; gap: var(--space-3); }
.features .icon { color: var(--c-accent); margin-top: 0.2em; width: 1.4em; height: 1.4em; }
.features strong { display: block; }
.features span { color: var(--c-text-muted); }
.split { display: grid; gap: var(--space-7); }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } .steps { gap: var(--space-5); } }

.page-hero { padding-block: var(--space-5) var(--space-5); }
.page-hero__inner { display: flex; gap: var(--space-4); align-items: flex-start; }
.page-hero__icon { width: 52px; height: 52px; margin-top: 0.35rem; }
.page-hero__icon .icon { width: 28px; height: 28px; }
.page-hero .lead { margin-bottom: var(--space-3); }
.trust-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); font-size: var(--fs-sm); color: var(--c-text-muted); font-weight: 600; }
.trust-list li { display: inline-flex; align-items: center; gap: var(--space-1); }
.trust-list .icon { color: var(--c-success-text); }
@media (max-width: 559.98px) { .page-hero__icon { display: none; } }

.hub-section { padding-top: var(--space-6); }
.hub-section > h2 { display: flex; align-items: center; gap: var(--space-2); }
.hub-section > h2 .icon { color: var(--c-accent); }
.hub-section > p { color: var(--c-text-muted); max-width: 44rem; }

/* Artículos */
.article__header { padding-block: var(--space-5) var(--space-3); }
.article-meta { font-size: var(--fs-sm); color: var(--c-text-muted); margin: 0; }
.prose { font-size: var(--fs-base); }
.prose > * + h2 { margin-top: var(--space-7); }
.prose > * + h3 { margin-top: var(--space-5); }
.prose ul, .prose ol { padding-left: 1.4rem; margin: 0 0 var(--space-4); }
.prose li + li { margin-top: var(--space-2); }
.prose blockquote { margin: var(--space-5) 0; padding: var(--space-3) var(--space-4); border-left: 4px solid var(--c-accent); background: var(--c-surface); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.prose blockquote p:last-child { margin: 0; }
.prose pre { background: var(--c-surface-2); border: 1px solid var(--c-border); border-radius: var(--radius); padding: var(--space-4); overflow-x: auto; font-size: 0.9rem; line-height: 1.5; }
.prose pre code { background: none; padding: 0; }
.table-wrap { overflow-x: auto; margin: 0 0 var(--space-5); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
.prose table, .data-table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.prose th, .prose td, .data-table th, .data-table td { text-align: left; padding: 0.6rem 0.85rem; border-bottom: 1px solid var(--c-border); vertical-align: top; }
.prose thead th, .data-table thead th { background: var(--c-surface-2); font-weight: 650; white-space: nowrap; }
.prose tbody tr:last-child td, .data-table tbody tr:last-child td { border-bottom: 0; }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.prose .formula { display: block; font-family: var(--font-mono); background: var(--c-surface); border: 1px solid var(--c-border); border-left: 4px solid var(--c-accent); padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); margin-bottom: var(--space-4); overflow-x: auto; white-space: nowrap; }
.sources { margin-top: var(--space-7); font-size: 0.9375rem; }
.sources h2 { font-size: var(--fs-h3); }
.sources ul { padding-left: 1.2rem; }
.sources li + li { margin-top: var(--space-2); }
.sources__publisher { color: var(--c-text-muted); }
.legal-note { font-size: var(--fs-sm); color: var(--c-text-muted); }

/* Página 404 y búsqueda */
.error-page { padding-block: var(--space-8) var(--space-6); }
.error-page__code { font-size: var(--fs-sm); font-weight: 700; color: var(--c-accent); letter-spacing: 0.08em; text-transform: uppercase; }
.search-page__results { list-style: none; margin: var(--space-5) 0 0; padding: 0; display: grid; gap: var(--space-3); }
.search-page__results .card { padding: var(--space-4) var(--space-5); }
.search-page__status { margin-top: var(--space-4); color: var(--c-text-muted); }

/* 6. Herramientas ------------------------------------------------------------ */
.tool-shell { margin-bottom: var(--space-6); }
.tool-panel {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: var(--space-4);
}
@media (min-width: 640px) { .tool-panel { padding: var(--space-6); } }
.tool-panel > * + * { margin-top: var(--space-5); }
.tool-grid { display: grid; gap: var(--space-5); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .tool-grid--2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; } }
.panel-title { font-size: var(--fs-h3); margin-bottom: var(--space-3); display: flex; align-items: center; gap: var(--space-2); }
.panel-title .icon { color: var(--c-accent); flex: none; }

.dropzone {
  position: relative; display: grid; place-items: center; text-align: center; gap: var(--space-2);
  padding: var(--space-6) var(--space-4); min-height: 13rem;
  border: 2px dashed var(--c-border-strong); border-radius: var(--radius-lg); background: var(--c-surface-2);
  transition: border-color var(--transition), background var(--transition);
}
.dropzone.is-dragover { border-color: var(--c-accent); background: var(--c-accent-soft); }
.dropzone:focus-within { border-color: var(--c-accent); }
.dropzone__icon { width: 2.5rem; height: 2.5rem; color: var(--c-accent); }
.dropzone__title { font-weight: 700; font-size: var(--fs-lg); margin: 0; }
.dropzone__hint { margin: 0; color: var(--c-text-muted); font-size: var(--fs-sm); }
.dropzone__input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.dropzone__input:focus-visible + .btn { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.dropzone--compact { min-height: auto; padding: var(--space-4); grid-template-columns: auto; }

.file-info { display: flex; gap: var(--space-4); align-items: center; padding: var(--space-3) var(--space-4); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface-2); }
.file-info__name { font-weight: 650; margin: 0; overflow-wrap: anywhere; }
.file-info__meta { margin: 0; color: var(--c-text-muted); font-size: var(--fs-sm); }
.file-info__body { min-width: 0; flex: 1; }

.field { display: grid; gap: var(--space-1); }
.field + .field, .field + fieldset, fieldset + .field { margin-top: var(--space-4); }
.field label, .field__label, legend { font-weight: 650; }
.field__hint { font-size: var(--fs-sm); color: var(--c-text-muted); margin: 0; }
.field__error { font-size: var(--fs-sm); color: var(--c-danger-text); font-weight: 600; margin: 0; }
.input, .select {
  width: 100%; min-height: 44px; padding: 0.5rem 0.75rem; border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm); background: var(--c-surface);
}
.input:focus-visible, .select:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 0; border-color: var(--c-accent); }
.input[aria-invalid="true"] { border-color: var(--c-danger-text); box-shadow: 0 0 0 1px var(--c-danger-text); }
.input--num { font-variant-numeric: tabular-nums; }
.input--lg { font-size: 1.25rem; min-height: 52px; }
.select { appearance: auto; }
.input-group { display: flex; gap: var(--space-2); align-items: stretch; }
.input-group > * { min-width: 0; }
.input-group .input { flex: 1; }
.input-group .select { flex: 0 1 11rem; width: auto; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend { padding: 0; margin-bottom: var(--space-2); }
.segmented { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.segmented span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0.45rem 1rem;
  border: 1px solid var(--c-border-strong); border-radius: var(--radius-sm); background: var(--c-surface);
  font-weight: 600; cursor: pointer; transition: background var(--transition), border-color var(--transition);
}
.segmented span:hover { border-color: var(--c-accent); }
.segmented input:checked + span { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-on-accent); }
.segmented input:focus-visible + span { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.segmented input:disabled + span { opacity: 0.5; cursor: not-allowed; }
.check { display: flex; gap: var(--space-2); align-items: flex-start; font-weight: 600; cursor: pointer; }
.check input { width: 1.2rem; height: 1.2rem; margin: 0.2rem 0 0; accent-color: var(--c-accent); flex: none; }
.range-row { display: flex; align-items: center; gap: var(--space-3); }
.range-row input[type="range"] { flex: 1; accent-color: var(--c-accent); min-height: 44px; }
.range-row output { min-width: 3.2ch; text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.color-input { width: 52px; height: 44px; padding: 2px; border: 1px solid var(--c-border-strong); border-radius: var(--radius-sm); background: var(--c-surface); }
.dims { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-2); align-items: end; }
.dims__x { padding-bottom: 0.65rem; color: var(--c-text-muted); font-weight: 700; }
.quick-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.status { margin: 0; font-size: var(--fs-sm); color: var(--c-text-muted); min-height: 1.5em; }
.alert { display: flex; gap: var(--space-3); padding: var(--space-3) var(--space-4); border-radius: var(--radius); border: 1px solid; font-weight: 550; }
.alert p { margin: 0; }
.alert--error { background: var(--c-danger-bg); border-color: var(--c-danger-border); color: var(--c-danger-text); }
.alert--warning { background: var(--c-warn-bg); border-color: var(--c-warn-border); color: var(--c-warn-text); }
.alert--success { background: var(--c-success-bg); border-color: var(--c-success-border); color: var(--c-success-text); }
.alert .icon { margin-top: 0.15em; }
.alert ul { margin: var(--space-1) 0 0; padding-left: 1.2rem; }

.preview { display: grid; gap: var(--space-2); margin: 0; }
.preview__frame {
  display: grid; place-items: center; min-height: 10rem; max-height: 26rem; overflow: hidden;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background-color: var(--c-checker-a);
  background-image: conic-gradient(var(--c-checker-b) 25%, transparent 0 50%, var(--c-checker-b) 0 75%, transparent 0);
  background-size: 20px 20px;
}
.preview__frame img { max-height: 26rem; width: auto; object-fit: contain; }
.preview figcaption { font-size: var(--fs-sm); color: var(--c-text-muted); }

.result { border: 1px solid var(--c-success-border); background: var(--c-surface); border-radius: var(--radius-lg); padding: var(--space-4); }
@media (min-width: 640px) { .result { padding: var(--space-5); } }
.result__title { display: flex; align-items: center; gap: var(--space-2); font-size: var(--fs-h3); color: var(--c-success-text); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: var(--space-3); margin: 0 0 var(--space-4); }
.stat { background: var(--c-surface-2); border-radius: var(--radius); padding: var(--space-3) var(--space-4); }
.stat dt { font-size: var(--fs-sm); color: var(--c-text-muted); font-weight: 600; }
.stat dd { margin: 0; font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat--good dd { color: var(--c-success-text); }
.stat--bad dd { color: var(--c-danger-text); }

.big-result { background: var(--c-accent-soft); border-radius: var(--radius-lg); padding: var(--space-5); text-align: center; }
.big-result__label { margin: 0 0 var(--space-1); font-weight: 600; color: var(--c-text-muted); }
.big-result__value { margin: 0; font-size: clamp(2rem, 1.5rem + 2.5vw, 3rem); font-weight: 750; color: var(--c-accent); font-variant-numeric: tabular-nums; line-height: 1.15; word-break: break-all; }
.big-result__detail { margin: var(--space-2) 0 0; color: var(--c-text-muted); font-family: var(--font-mono); font-size: 0.9375rem; word-break: break-word; }
.calc-grid { display: grid; gap: var(--space-5); }
@media (min-width: 760px) { .calc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.calc-card { border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: var(--space-4); }
.calc-card legend { font-size: var(--fs-h3); }
.compare-verdict { font-weight: 650; text-align: center; margin: 0; }

.file-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); counter-reset: file; }
.file-list__item {
  counter-increment: file; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: var(--space-3); align-items: center;
  padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface);
}
.file-list__item::before { content: counter(file); width: 2rem; height: 2rem; display: grid; place-items: center; border-radius: 50%; background: var(--c-surface-2); font-weight: 700; font-size: var(--fs-sm); }
.file-list__item.is-error { border-color: var(--c-danger-border); background: var(--c-danger-bg); }
.file-list__name { margin: 0; font-weight: 650; overflow-wrap: anywhere; }
.file-list__meta { margin: 0; font-size: var(--fs-sm); color: var(--c-text-muted); }
.file-list__item.is-error .file-list__meta { color: var(--c-danger-text); }
.file-list__actions { display: flex; gap: var(--space-1); }
.download-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.download-list li { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); }
.download-list .meta { font-size: var(--fs-sm); color: var(--c-text-muted); }
.page-summary { font-size: var(--fs-sm); color: var(--c-text-muted); margin: 0; }

.tool-content { padding-top: var(--space-5); }
.tool-content h2 { margin-top: var(--space-6); }
.tool-content h2:first-child { margin-top: 0; }

/* 7. Movimiento reducido e impresión ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .btn.is-busy::after { animation: none; border-right-color: var(--c-on-accent); opacity: 0.6; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media print {
  .site-header, .site-footer, .skip-link, .ad-slot, .tool-shell, .related { display: none !important; }
  body { background: #fff; color: #000; }
  a { color: #000; }
}

/* Ajustes de formularios y tabla de equivalencias */
.check + .check { margin-top: var(--space-2); }
fieldset > .check { padding-block: 0.35rem; }
.equivalences { margin-top: var(--space-5); }
.equivalences summary { cursor: pointer; font-weight: 650; color: var(--c-accent); padding-block: var(--space-2); width: max-content; max-width: 100%; }
.equivalences .table-wrap { margin-top: var(--space-3); }
.tool-panel > .check { margin-top: var(--space-4); }
.big-result + .actions, .field + .actions, fieldset + .actions, .field + .field, .actions + .field { margin-top: var(--space-4); }
.calc-card[hidden] { display: none; }
/* Los títulos de resultado reciben el foco para que los lectores de pantalla los anuncien; no necesitan contorno. */
[data-result-title]:focus { outline: none; }

/* 8. Herramientas añadidas en octubre de 2026 ---------------------------------- */
.mono { font-family: var(--font-mono); }
.btn[aria-pressed="true"] { background: var(--c-accent-soft); border-color: var(--c-accent); color: var(--c-text); }

/* Listas con miniatura (imágenes a PDF) */
.file-list--thumbs .file-list__item { grid-template-columns: auto auto minmax(0, 1fr) auto; }
.file-list__thumb { width: 3.25rem; height: 3.25rem; object-fit: cover; border-radius: var(--radius-sm); border: 1px solid var(--c-border); background: var(--c-surface-2); }
@media (max-width: 479.98px) {
  .file-list--thumbs .file-list__item { grid-template-columns: auto minmax(0, 1fr); }
  .file-list--thumbs .file-list__item::before { display: none; }
  .file-list--thumbs .file-list__actions { grid-column: 1 / -1; justify-content: flex-end; }
}

/* Cuadrícula de páginas (ordenar PDF, PDF a imágenes) */
.page-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); }
.page-card { display: grid; gap: var(--space-2); align-content: start; padding: var(--space-2); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
.page-card__thumb { position: relative; display: grid; place-items: center; aspect-ratio: 1; overflow: hidden; border-radius: var(--radius-sm); background: var(--c-surface-2); }
.page-card__thumb img { position: absolute; inset: 0; margin: auto; max-width: 100%; max-height: 100%; box-shadow: var(--shadow-sm); background: #fff; transition: transform var(--transition); }
.page-card__thumb[data-rotation="90"] img { transform: rotate(90deg); }
.page-card__thumb[data-rotation="180"] img { transform: rotate(180deg); }
.page-card__thumb[data-rotation="270"] img { transform: rotate(270deg); }
.page-card__placeholder { font-size: 1.5rem; font-weight: 700; color: var(--c-text-muted); }
.page-card__label { margin: 0; font-size: var(--fs-sm); font-weight: 650; text-align: center; }
.page-card__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 2px; }
.page-card__actions .btn--icon { min-width: 36px; min-height: 36px; padding: 0.3rem; }
.page-card__actions .icon--up, .page-card__actions .icon--down { transform: rotate(-90deg); }
.page-card.is-deleted .page-card__thumb { opacity: 0.35; }
.page-card.is-deleted .page-card__label { text-decoration: line-through; color: var(--c-danger-text); }
.page-card .check { justify-content: center; font-size: var(--fs-sm); }

/* Separación entre grupos de botones y resultados */
.actions + .quick-actions, .quick-actions + .actions { margin-top: var(--space-3); }
.actions + .stats, .actions + .actions { margin-top: var(--space-3); }
.file-info + .actions, .actions + .page-summary, .page-summary + .page-grid, .page-grid + .actions,
.field__hint + .actions, .actions + .file-list, .file-list + .page-summary, .page-summary + .tool-grid, .tool-grid + .actions { margin-top: var(--space-4); }

/* Barra de progreso */
.progress { width: 100%; height: 0.75rem; accent-color: var(--c-accent); }

/* Teclado */
.kb-capture { display: block; width: 100%; padding: var(--space-4); border: 2px dashed var(--c-border-strong); border-radius: var(--radius-lg); background: var(--c-surface-2); color: var(--c-text); text-align: center; font-weight: 650; cursor: pointer; }
.kb-capture:focus-visible, .kb-capture.is-active { outline: none; border-style: solid; border-color: var(--c-accent); background: var(--c-accent-soft); }
.kb-wrap { overflow-x: auto; padding-bottom: var(--space-2); }
.kb { display: flex; gap: 0.9rem; width: max-content; font-size: 0.75rem; }
.kb__block { display: grid; gap: 0.25rem; align-content: start; }
.kb__row { display: flex; gap: 0.25rem; }
.kb__row--gap { margin-bottom: 0.5rem; }
.kb__key {
  display: grid; place-items: center; flex: none; width: 2.4rem; height: 2.4rem; padding: 0 0.15rem; border: 1px solid var(--c-border-strong);
  border-radius: 5px; background: var(--c-surface); color: var(--c-text); font-weight: 600; line-height: 1.1; text-align: center; white-space: nowrap; overflow: hidden;
}
.kb__key--spacer { visibility: hidden; }
.kb__key--small { font-size: 0.6rem; white-space: normal; line-height: 1.05; }
.kb__key--w125 { width: 3.05rem; }
.kb__key--w15 { width: 3.7rem; }
.kb__key--w175 { width: 4.35rem; }
.kb__key--w2 { width: 5.05rem; }
.kb__key--w225 { width: 5.7rem; }
.kb__key--w275 { width: 7rem; }
.kb__key--w625 { width: 15.95rem; }
.kb__key--tall { height: 5.05rem; }
.kb__key.is-tested { background: var(--c-success-bg); border-color: var(--c-success-border); color: var(--c-success-text); }
.kb__key.is-down { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-on-accent); }
.key-log { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-2); min-height: 2.25rem; }
.key-log li { padding: 0.2rem 0.55rem; border-radius: var(--radius-sm); background: var(--c-surface-2); font-family: var(--font-mono); font-size: var(--fs-sm); }

/* Ratón */
.test-area { display: grid; place-items: center; min-height: 14rem; padding: var(--space-4); border: 2px dashed var(--c-border-strong); border-radius: var(--radius-lg); background: var(--c-surface-2); text-align: center; touch-action: none; user-select: none; }
.test-area:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.test-area p { margin: 0; }
.mouse-buttons { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr)); margin: 0; }
.mouse-button { padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
.mouse-button dt { font-weight: 650; }
.mouse-button dd { margin: 0; font-size: var(--fs-sm); color: var(--c-text-muted); }
.mouse-button dd strong { font-size: 1.25rem; color: var(--c-text); font-variant-numeric: tabular-nums; }
.mouse-button.is-down { border-color: var(--c-accent); background: var(--c-accent-soft); }
.mouse-button.is-warning { border-color: var(--c-danger-border); background: var(--c-danger-bg); }
.mouse-button.is-warning dd { color: var(--c-danger-text); }

/* Prueba de monitor a pantalla completa */
.screen-test { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: end center; padding: var(--space-6); cursor: none; }
.screen-test[hidden] { display: none; }
.screen-test__hint { margin: 0; padding: var(--space-2) var(--space-4); border-radius: var(--radius); background: rgb(0 0 0 / 0.7); color: #fff; font-size: var(--fs-sm); transition: opacity 600ms ease; }
.screen-test__hint.is-faded { opacity: 0; }
.swatch--black { background: #000; }
.swatch--white { background: #fff; }
.swatch--red { background: #f00; }
.swatch--green { background: #0f0; }
.swatch--blue { background: #00f; }
.swatch--gray { background: #808080; }
.swatch--gradient { background: linear-gradient(90deg, #000, #fff); }
.swatch-btn__chip { width: 1.1rem; height: 1.1rem; border-radius: 4px; border: 1px solid var(--c-border-strong); }

/* Medidor de nivel de audio */
.level-meter { position: relative; height: 1.25rem; border-radius: 999px; background: var(--c-surface-2); border: 1px solid var(--c-border); overflow: hidden; }
.level-meter__bar { position: absolute; inset: 0; transform-origin: left center; transform: scaleX(0); background: var(--c-accent); }
.audio-player { width: 100%; }

/* Contraseñas y hashes */
.secret-output { display: block; width: 100%; padding: var(--space-4); border: 1px solid var(--c-border-strong); border-radius: var(--radius); background: var(--c-surface-2); font-family: var(--font-mono); font-size: clamp(1rem, 0.9rem + 0.8vw, 1.375rem); overflow-wrap: anywhere; word-break: break-all; min-height: 3.5rem; margin: 0; }
.strength { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.strength span { height: 0.4rem; border-radius: 999px; background: var(--c-surface-2); border: 1px solid var(--c-border); }
.strength[data-level="1"] span:nth-child(-n+1) { background: var(--c-danger-text); }
.strength[data-level="2"] span:nth-child(-n+2) { background: var(--c-warn-border); }
.strength[data-level="3"] span:nth-child(-n+3) { background: var(--c-success-border); }
.strength[data-level="4"] span { background: var(--c-success-text); }
.secret-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.secret-list li { display: flex; gap: var(--space-2); align-items: center; justify-content: space-between; padding: var(--space-2) var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); }
.secret-list code { overflow-wrap: anywhere; word-break: break-all; min-width: 0; }
.hash-results { display: grid; gap: var(--space-3); margin: 0; }
.hash-results > div { padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface-2); }
.hash-results dt { font-weight: 650; display: flex; justify-content: space-between; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.hash-results dd { margin: var(--space-1) 0 0; font-family: var(--font-mono); overflow-wrap: anywhere; word-break: break-all; }

/* Metadatos */
.meta-list { display: grid; gap: var(--space-1) var(--space-4); grid-template-columns: minmax(0, max-content) minmax(0, 1fr); margin: 0; font-size: 0.9375rem; }
.meta-list dt { font-weight: 650; }
.meta-list dd { margin: 0; overflow-wrap: anywhere; }
.meta-cards { display: grid; gap: var(--space-3); }
.meta-card { display: grid; gap: var(--space-3); padding: var(--space-4); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface); }
.meta-card__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-2); }
.meta-card__name { margin: 0; font-weight: 650; overflow-wrap: anywhere; }
.meta-card__tags { display: flex; flex-wrap: wrap; gap: var(--space-1); margin: 0; padding: 0; list-style: none; }
.meta-card__tags li { padding: 0.1rem 0.55rem; border-radius: 999px; font-size: var(--fs-sm); font-weight: 600; background: var(--c-warn-bg); color: var(--c-warn-text); border: 1px solid var(--c-warn-border); }
.meta-card__tags li.is-kept { background: var(--c-success-bg); color: var(--c-success-text); border-color: var(--c-success-border); }
.meta-card p { margin: 0; }

/* 9. Herramientas añadidas el 21 de octubre de 2026 ---------------------------- */
/* Separación uniforme entre bloques dentro de las zonas de trabajo y tarjetas de cálculo. */
[data-workspace] > * + *, [data-panel] > * + *, .calc-card > * + * { margin-top: var(--space-4); }
.tool-grid + .stats, .field + .stats { margin-top: var(--space-4); }
/* Recorte */
.crop-wrap { display: grid; place-items: center; padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background-color: var(--c-checker-a); background-image: conic-gradient(var(--c-checker-b) 25%, transparent 0 50%, var(--c-checker-b) 0 75%, transparent 0); background-size: 20px 20px; }
.crop-stage { position: relative; display: inline-block; max-width: 100%; overflow: hidden; touch-action: none; user-select: none; line-height: 0; }
.crop-stage canvas { display: block; max-width: 100%; max-height: 65vh; width: auto; height: auto; }
.crop-box { position: absolute; outline: 2px solid #fff; box-shadow: 0 0 0 9999px rgb(0 0 0 / 0.45); cursor: move; }
.crop-box:focus-visible { outline: 3px solid var(--c-focus); }
/* Los tiradores quedan dentro del recuadro para poder agarrarlos aunque el recorte toque el borde de la imagen. */
.crop-handle { position: absolute; width: 20px; height: 20px; border-radius: 4px; background: #fff; border: 2px solid #0a6a70; }
.crop-handle--nw { left: -2px; top: -2px; cursor: nwse-resize; }
.crop-handle--ne { right: -2px; top: -2px; cursor: nesw-resize; }
.crop-handle--sw { left: -2px; bottom: -2px; cursor: nesw-resize; }
.crop-handle--se { right: -2px; bottom: -2px; cursor: nwse-resize; }
.crop-fields { display: grid; gap: var(--space-3); grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 640px) { .crop-fields { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.crop-fields .field + .field { margin-top: 0; }

/* Vista previa de iconos */
.icon-previews { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: flex-end; margin: 0; }
.icon-previews figure { margin: 0; display: grid; gap: var(--space-1); justify-items: center; font-size: var(--fs-sm); color: var(--c-text-muted); }
.icon-previews img { background-color: var(--c-checker-a); background-image: conic-gradient(var(--c-checker-b) 25%, transparent 0 50%, var(--c-checker-b) 0 75%, transparent 0); background-size: 8px 8px; border: 1px solid var(--c-border); }

/* Vista previa de páginas (marca de agua, numeración, firma) */
.page-preview-wrap { display: grid; place-items: center; padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface-2); }
.page-preview { position: relative; display: inline-block; max-width: 100%; line-height: 0; box-shadow: var(--shadow); }
.page-preview canvas { display: block; max-width: 100%; max-height: 75vh; width: auto; height: auto; background: #fff; }
.page-nav { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.sig-overlay { position: absolute; cursor: move; outline: 2px dashed #0a6a70; outline-offset: 2px; touch-action: none; }
.sig-overlay:focus-visible { outline: 3px solid var(--c-focus); }
.sig-overlay img { display: block; width: 100%; height: 100%; pointer-events: none; }
.sig-overlay--placed { outline-style: solid; outline-color: var(--c-success-border); cursor: default; }
.sig-pad { display: block; width: 100%; max-width: 40rem; aspect-ratio: 5 / 2; border: 2px dashed var(--c-border-strong); border-radius: var(--radius); background: #fff; touch-action: none; cursor: crosshair; }
.sig-preview { display: grid; place-items: center; min-height: 5rem; max-width: 40rem; padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; }
.sig-preview img { max-width: 100%; max-height: 8rem; }

/* Filas de aparatos (consumo eléctrico) */
.device-rows { display: grid; gap: var(--space-3); margin: 0; padding: 0; list-style: none; }
.device-row { display: grid; gap: var(--space-2); grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: end; padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); }
.device-row .field + .field { margin-top: 0; }
.device-row__name { grid-column: 1 / -1; }
@media (min-width: 760px) {
  .device-row { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) auto; padding: var(--space-2) var(--space-3); }
  .device-row__name { grid-column: auto; }
}

/* Cámara */
.video-frame { display: grid; place-items: center; aspect-ratio: 16 / 9; overflow: hidden; border-radius: var(--radius); background: #000; }
.video-frame video { width: 100%; height: 100%; object-fit: contain; }
.video-frame.is-mirrored video { transform: scaleX(-1); }

/* Mandos */
.pad-sticks { display: flex; flex-wrap: wrap; gap: var(--space-5); }
.pad-stick { display: grid; gap: var(--space-2); justify-items: center; margin: 0; }
.stick { position: relative; width: 9rem; height: 9rem; border-radius: 50%; border: 2px solid var(--c-border-strong); background: var(--c-surface-2); }
.stick__zone { position: absolute; left: 42.5%; top: 42.5%; width: 15%; height: 15%; border-radius: 50%; border: 1px dashed var(--c-text-muted); }
.stick__dot { position: absolute; left: 50%; top: 50%; width: 1.25rem; height: 1.25rem; margin: -0.625rem 0 0 -0.625rem; border-radius: 50%; background: var(--c-accent); }
.stick.is-pressed { border-color: var(--c-accent); }
.pad-stick figcaption { font-size: var(--fs-sm); font-weight: 650; text-align: center; font-variant-numeric: tabular-nums; }
.pad-buttons { display: grid; gap: var(--space-2); grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr)); margin: 0; padding: 0; list-style: none; }
.pad-buttons li { display: flex; justify-content: space-between; gap: var(--space-2); padding: var(--space-2) var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius-sm); font-size: var(--fs-sm); font-weight: 600; }
.pad-buttons li.is-down { background: var(--c-accent); border-color: var(--c-accent); color: var(--c-on-accent); }
.pad-buttons li.is-tested:not(.is-down) { background: var(--c-success-bg); border-color: var(--c-success-border); color: var(--c-success-text); }

/* Código QR */
.qr-output { display: grid; place-items: center; gap: var(--space-2); padding: var(--space-4); border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; color: #17202b; }
.qr-output canvas { width: min(100%, 18rem); height: auto; image-rendering: pixelated; }
.qr-output p { margin: 0; font-size: var(--fs-sm); text-align: center; overflow-wrap: anywhere; }

/* 10. Herramientas añadidas el 22 de octubre de 2026 ---------------------------- */
/* Ocultar datos en una imagen */
.redact-stage { cursor: crosshair; }
.redact-zone { position: absolute; outline: 2px dashed #fff; box-shadow: 0 0 0 1px #0a6a70, inset 0 0 0 1px #0a6a70; cursor: move; }
.redact-zone:focus-visible { outline: 3px solid var(--c-focus); }
.redact-zone__remove { position: absolute; top: -2px; right: -2px; width: 24px; height: 24px; display: grid; place-items: center; padding: 0; border: 2px solid #0a6a70; border-radius: 4px; background: #fff; color: #17202b; font-size: 1rem; font-weight: 700; line-height: 1; cursor: pointer; }
.redact-zone__remove:focus-visible { outline: 3px solid var(--c-focus); }
.redact-zone .crop-handle--se { right: -2px; bottom: -2px; }

/* Escanear documentos */
.scan-editor { display: grid; gap: var(--space-4); }
@media (min-width: 900px) { .scan-editor { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); align-items: start; } }
.scan-stage canvas { max-height: 70vh; }
.scan-handle { position: absolute; width: 28px; height: 28px; margin: -14px 0 0 -14px; padding: 0; border: 3px solid #0a6a70; border-radius: 50%; background: rgb(255 255 255 / 0.85); cursor: grab; touch-action: none; }
.scan-handle:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 2px; }
.scan-result { margin: 0; display: grid; gap: var(--space-2); justify-items: center; padding: var(--space-3); border: 1px solid var(--c-border); border-radius: var(--radius); background: var(--c-surface-2); }
.scan-result canvas { display: block; max-width: 100%; max-height: 60vh; background: #fff; box-shadow: var(--shadow); }
.scan-result figcaption { font-size: var(--fs-sm); color: var(--c-text-muted); }
.file-list__item.is-current { border-color: var(--c-accent); box-shadow: inset 0 0 0 1px var(--c-accent); }
.file-list__actions .btn--sm { white-space: nowrap; }

/* Extraer texto */
.text-output { width: 100%; min-height: 16rem; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: var(--fs-sm); line-height: 1.5; resize: vertical; }

/* Frecuencia de refresco */
.motion-strip { display: block; width: 100%; height: 6rem; border-radius: var(--radius); }

/* Pantalla táctil */
.touch-area { position: relative; }
.touch-area canvas { display: block; width: 100%; height: min(60vh, 32rem); border: 1px solid var(--c-border); border-radius: var(--radius); touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.touch-area.is-fullscreen { background: #fff; }
.touch-area.is-fullscreen canvas { width: 100vw; height: 100vh; border: 0; border-radius: 0; }
.touch-area__exit { position: absolute; top: var(--space-3); right: var(--space-3); }

/* Información del equipo */
.info-groups { display: grid; gap: var(--space-5); }
@media (min-width: 900px) { .info-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.info-list { margin: 0; display: grid; gap: 0; border: 1px solid var(--c-border); border-radius: var(--radius); }
.info-list > div { display: grid; gap: var(--space-1); padding: var(--space-2) var(--space-3); border-top: 1px solid var(--c-border); }
.info-list > div:first-child { border-top: 0; }
@media (min-width: 480px) { .info-list > div { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: var(--space-3); } }
.info-list dt { font-weight: 650; }
.info-list dd { margin: 0; overflow-wrap: anywhere; }
.info-list__note { display: block; font-size: var(--fs-sm); color: var(--c-text-muted); }

/* Comprobador de contraseñas (cinco niveles) */
.strength--5 { grid-template-columns: repeat(5, 1fr); }
.strength--5[data-level="0"] span:nth-child(-n+1) { background: var(--c-danger-text); }
.strength--5[data-level="1"] span:nth-child(-n+2) { background: var(--c-danger-text); }
.strength--5[data-level="2"] span:nth-child(-n+3) { background: var(--c-warn-border); }
.strength--5[data-level="3"] span:nth-child(-n+4) { background: var(--c-success-border); }
.strength--5[data-level="4"] span { background: var(--c-success-text); }