/* =========================================================
   FACILA — hoja de estilos principal
   Sistema visual definitivo (Fase 4.1)
   Mobile-first: los estilos base son para movil; los ajustes
   de escritorio viven dentro de @media (min-width: 768px)
   ========================================================= */

/* ---------- fuentes propias (Inter y Sora, subconjunto latino) ----------
   Se sirven desde /assets/fonts/ en vez de Google Fonts: una peticion externa
   menos, mas rapido, y los datos de quien visita la web no salen de aqui.
   Licencia: SIL Open Font License, ver los archivos LICENSE de esa carpeta. */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('../fonts/inter-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('../fonts/inter-latin-500-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/inter-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/inter-latin-700-normal.woff2') format('woff2');}
@font-face{font-family:'Sora';font-style:normal;font-weight:600;font-display:swap;src:url('../fonts/sora-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'Sora';font-style:normal;font-weight:700;font-display:swap;src:url('../fonts/sora-latin-700-normal.woff2') format('woff2');}

:root{
  --bg:#F8FAFC;
  --surface:#FFFFFF;
  --border:#E2E8F0;
  --border-strong:#CBD5E1;
  --text:#0F172A;
  --text2:#64748B;
  --primary:#2563EB;
  --primary-dark:#1D4ED8;
  --primary-tint:#EAF1FE;
  --success:#0F9D6E;
  --success-text:#0B7A56;
  --success-tint:#E7F6EF;
  --error:#DC2626;
  --error-tint:#FDECEC;
  --on-primary:#FFFFFF;
  --warn-tint:#FFF4E5;
  --warn-text:#9A5B00;
  --fuerza-2:#DB6E0F;
  --fuerza-3:#B07400;
  --sombra:0 2px 6px rgba(15,23,42,.05);
  --sombra-alta:0 10px 28px rgba(15,23,42,.12);
  --r:10px;
  --rl:16px;
  --font-h:'Sora',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-b:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --container:1120px;
  color-scheme:light;
}

:root[data-theme="dark"]{
  --bg:#0F172A;
  --surface:#1B2537;
  --border:#2C3A50;
  --border-strong:#647695;
  --text:#E8EEF7;
  --text2:#A2B0C4;
  --primary:#60A5FA;
  --primary-dark:#93C5FD;
  --primary-tint:#1C2C4A;
  --success:#34D399;
  --success-text:#6EE7B7;
  --success-tint:#122D26;
  --error:#F87171;
  --error-tint:#3A1E1E;
  --on-primary:#0B1220;
  --warn-tint:#3A2A12;
  --warn-text:#FBBF24;
  --fuerza-2:#FB923C;
  --fuerza-3:#FBBF24;
  --sombra:0 2px 6px rgba(0,0,0,.35);
  --sombra-alta:0 12px 32px rgba(0,0,0,.5);
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-b);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

h1,h2,h3{font-family:var(--font-h);font-weight:700;color:var(--text);margin:0 0 .5em;line-height:1.22;letter-spacing:-.011em;}
h1{font-size:26px;}
h2{font-size:20px;}
h3{font-size:17px;}
p{margin:0 0 1em;color:var(--text);}

/* ---------- accesibilidad ---------- */
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.skip-link{
  position:absolute;left:8px;top:-48px;background:var(--primary);color:var(--on-primary);
  padding:10px 16px;border-radius:var(--r);z-index:100;transition:top .15s;
  font-family:var(--font-b);font-weight:600;font-size:14px;
}
.skip-link:focus{top:8px;}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;}

/* ---------- cabecera ---------- */
.site-header{
  background:var(--surface);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;
}
.site-header-inner{
  max-width:var(--container);margin:0 auto;padding:12px 16px;
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
}
.site-logo{display:flex;align-items:center;gap:8px;flex-shrink:0;order:1;}
.site-logo-text{font-family:var(--font-h);font-weight:700;font-size:19px;color:var(--text);}
.site-logo-text .accent{color:var(--primary);}
.site-logo svg [stroke="#2563EB"]{stroke:var(--primary);}
.site-logo svg [stroke="#0F9D6E"]{stroke:var(--success);}

.site-nav{display:none;}

.theme-toggle{
  order:2;margin-left:auto;background:none;border:1px solid var(--border-strong);
  border-radius:var(--r);width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  color:var(--text);cursor:pointer;flex-shrink:0;
}
.theme-toggle .icono-claro{display:none;}
:root[data-theme="dark"] .theme-toggle .icono-claro{display:block;}
:root[data-theme="dark"] .theme-toggle .icono-oscuro{display:none;}

.menu-toggle{
  order:3;margin-left:8px;background:none;border:1px solid var(--border-strong);
  border-radius:var(--r);width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  color:var(--text);cursor:pointer;
}

.mobile-nav{border-top:1px solid var(--border);padding:8px 16px 12px;}
.mobile-nav-links{display:flex;flex-direction:column;}
.mobile-nav-links a{
  padding:10px 0;font-family:var(--font-b);font-weight:500;font-size:15px;
  border-bottom:1px solid var(--border);color:var(--text);
}
.mobile-nav-links a:last-child{border-bottom:none;}

/* ---------- buscador ---------- */
.search-bar{
  order:3;flex:1 1 100%;position:relative;
  display:flex;align-items:center;gap:8px;
  border:1.5px solid var(--border-strong);border-radius:var(--r);
  padding:10px 14px;background:var(--surface);
}
.search-bar svg{color:var(--text2);flex-shrink:0;}
.search-bar input{
  border:none;outline:none;background:none;flex:1;min-width:0;
  font-family:var(--font-b);font-size:15px;color:var(--text);
}
.search-bar input::placeholder{color:var(--text2);}
.search-bar:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);}

.search-suggestions{
  position:absolute;left:0;right:0;top:calc(100% + 6px);
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  box-shadow:var(--sombra-alta);overflow:hidden;z-index:60;
}
.search-suggestion-item{
  display:block;padding:11px 14px;font-family:var(--font-b);font-size:14px;color:var(--text);
  border-top:1px solid var(--border);
}
.search-suggestion-item:first-child{border-top:none;}
.search-suggestion-item:hover,.search-suggestion-item:focus{background:var(--bg);}
.search-suggestion-empty{padding:14px;font-family:var(--font-b);font-size:13px;color:var(--text2);}

/* ---------- hero ---------- */
.hero{max-width:var(--container);margin:0 auto;padding:36px 16px 24px;text-align:center;}
.hero-title{font-size:26px;margin-bottom:8px;}
.hero-tagline{font-family:var(--font-h);font-weight:600;color:var(--primary);font-size:16px;margin-bottom:4px;}
.hero-sub{color:var(--text2);font-size:14px;margin-bottom:20px;}
.search-bar-hero{max-width:480px;margin:0 auto;}

/* ---------- secciones ---------- */
.section{max-width:var(--container);margin:0 auto;padding:20px 16px;}
.section-title{font-size:19px;margin-bottom:14px;}

.section > p,.section > .calc-sub,.section > .hint{max-width:70ch;}

/* ---------- tarjetas de categoria ---------- */
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.category-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:16px;display:flex;flex-direction:column;gap:4px;
  transition:border-color .12s,box-shadow .12s,transform .12s;
}
.category-card:hover{border-color:var(--primary);box-shadow:var(--sombra);transform:translateY(-1px);}
.category-card:hover .category-icon{background:var(--primary);color:var(--on-primary);}
.category-icon{transition:background-color .12s,color .12s;}
.category-icon{
  width:34px;height:34px;border-radius:8px;margin-bottom:8px;
  background:var(--primary-tint);color:var(--primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.category-icon svg{width:19px;height:19px;}
.category-name{font-family:var(--font-b);font-weight:600;font-size:15px;color:var(--text);}
.category-desc{font-family:var(--font-b);font-size:12.5px;color:var(--text2);line-height:1.45;}

.page-head{display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.page-head h1{margin:0;}
.page-head-icon{
  width:48px;height:48px;border-radius:12px;flex-shrink:0;
  background:var(--primary-tint);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.page-head-icon svg{width:26px;height:26px;}
.page-head-meta{font-family:var(--font-b);font-size:13px;color:var(--text2);margin:2px 0 0;}

/* ---------- tarjetas de herramienta ---------- */
.tool-grid{display:grid;grid-template-columns:1fr;gap:12px;grid-auto-rows:1fr;}
.tool-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:16px 18px;display:flex;flex-direction:column;gap:5px;
  transition:border-color .12s,box-shadow .12s,transform .12s;
}
.tool-card:hover{border-color:var(--primary);box-shadow:var(--sombra);transform:translateY(-1px);}
.tool-card:hover .tool-name{color:var(--primary);}
.tool-name{font-family:var(--font-b);font-weight:600;font-size:15px;color:var(--text);transition:color .12s;line-height:1.35;}
.tool-desc{font-family:var(--font-b);font-size:13px;color:var(--text2);line-height:1.5;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;font-family:var(--font-b);font-weight:600;
  font-size:11px;padding:3px 8px;border-radius:6px;margin-left:6px;vertical-align:middle;
}
.badge-new{background:var(--primary-tint);color:var(--primary-dark);}
.badge-updated{background:var(--success-tint);color:var(--success-text);}
.badge-popular{background:var(--warn-tint);color:var(--warn-text);}

/* ---------- breadcrumb ---------- */
.breadcrumb{max-width:var(--container);margin:16px auto 0;padding:0 16px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-family:var(--font-b);font-size:13px;color:var(--text2);}
.breadcrumb li{display:flex;align-items:center;}
.breadcrumb li > span[aria-hidden]{margin:0 7px;opacity:.6;}
.breadcrumb a{color:var(--text2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb [aria-current]{color:var(--text);font-weight:500;}

/* ---------- botones (uso futuro en calculadoras) ---------- */
.btn{
  font-family:var(--font-b);font-weight:600;font-size:15px;
  padding:12px 22px;border-radius:var(--r);border:none;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
}
.btn{transition:background-color .12s,border-color .12s,color .12s;}
.btn-primary{background:var(--primary);color:var(--on-primary);}
.btn-primary:hover{background:var(--primary-dark);}
.btn-secondary{background:var(--surface);border:1.5px solid var(--border-strong);color:var(--text);}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);}
.btn:active{transform:translateY(1px);}

/* ---------- inputs (uso futuro en calculadoras) ---------- */
.field{margin-bottom:14px;}
.field label{display:block;font-family:var(--font-b);font-weight:600;font-size:13px;margin-bottom:6px;color:var(--text);}
.input{
  width:100%;min-height:44px;border:1.5px solid var(--border-strong);border-radius:var(--r);
  padding:11px 13px;font-family:var(--font-b);font-size:15px;color:var(--text);background:var(--surface);
}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-tint);}
.field.has-error .input{border-color:var(--error);}
.field.has-success .input{border-color:var(--success);}
.hint{font-family:var(--font-b);font-size:12px;color:var(--text2);margin-top:5px;}
.hint-error{color:var(--error);}
.hint-success{color:var(--success-text);}

/* ---------- resultado (uso futuro en calculadoras) ---------- */
.result-box{background:var(--success-tint);border-radius:var(--r);padding:18px;text-align:center;}
.result-label{font-family:var(--font-b);font-size:12px;color:var(--text2);}
.result-num{
  font-family:var(--font-b);font-weight:700;font-size:30px;color:var(--success-text);
  font-variant-numeric:tabular-nums;
}

/* ---------- tarjetas genericas y FAQ ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--rl);padding:20px;}
.calc-sub{color:var(--text2);font-size:14px;margin-bottom:20px;}
.btn-group{display:flex;gap:10px;flex-wrap:wrap;}

.faq-item{border-top:1px solid var(--border);padding:14px 0;}
.faq-item:first-child{border-top:none;padding-top:0;}
.faq-q{font-family:var(--font-b);font-weight:600;font-size:14px;margin-bottom:6px;color:var(--text);}
.faq-a{font-family:var(--font-b);font-size:13px;color:var(--text2);margin:0;}

/* ---------- bloques de resultado (finiquito / indemnizacion) ---------- */
.result-block{border:1px solid var(--border);border-radius:var(--r);padding:16px 18px;margin-bottom:12px;background:var(--surface);}
.result-block-title{font-family:var(--font-h);font-weight:700;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--primary);margin:0 0 10px;}
.result-line{display:flex;justify-content:space-between;gap:12px;font-family:var(--font-b);font-size:13.5px;color:var(--text2);padding:6px 0;}
.result-line span:last-child{font-variant-numeric:tabular-nums;color:var(--text);}
.result-line-strong{border-top:1px solid var(--border);margin-top:6px;padding-top:10px;font-weight:700;}
.result-line-strong span{color:var(--text);}
.result-line-strong span:last-child{font-size:19px;font-family:var(--font-h);letter-spacing:-.01em;}

/* ---------- medidor de fuerza (comprobador de contraseñas) ---------- */
.medidor{display:flex;gap:5px;margin-bottom:10px;}
.medidor-tramo{flex:1;height:7px;border-radius:99px;background:var(--border);transition:background .18s ease;}
.medidor-muy-debil .medidor-tramo-on{background:var(--error);}
.medidor-debil .medidor-tramo-on{background:var(--fuerza-2);}
.medidor-regular .medidor-tramo-on{background:var(--fuerza-3);}
.medidor-fuerte .medidor-tramo-on{background:var(--success);}
.medidor-muy-fuerte .medidor-tramo-on{background:var(--success-text);}
.medidor-etiqueta{font-family:var(--font-h);font-weight:700;font-size:18px;letter-spacing:-.01em;margin-bottom:10px;}
.medidor-texto-muy-debil{color:var(--error);}
.medidor-texto-debil{color:var(--fuerza-2);}
.medidor-texto-regular{color:var(--fuerza-3);}
.medidor-texto-fuerte{color:var(--success);}
.medidor-texto-muy-fuerte{color:var(--success-text);}
.patrones{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px;}
.patrones .patron{display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);border-radius:var(--r);padding:7px 10px;background:var(--bg);min-width:0;}
.patrones .patron code{font-size:13.5px;color:var(--text);word-break:break-all;}
.patrones .patron span{font-family:var(--font-b);font-size:11.5px;color:var(--text2);}
.patrones .patron-bruto{border-style:dashed;}
.patrones .patron-diccionario,.patrones .patron-teclado,.patrones .patron-secuencia,
.patrones .patron-repeticion,.patrones .patron-fecha{border-color:var(--error);background:var(--error-tint);}
.consejos{margin:0;padding-left:18px;font-family:var(--font-b);font-size:13.5px;color:var(--text2);}
.consejos li{margin-bottom:7px;}
.consejos li:last-child{margin-bottom:0;}
.campo-clave{display:flex;gap:8px;align-items:stretch;}
.campo-clave .input{flex:1;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.02em;}
.campo-clave .btn{flex:0 0 auto;}

/* ---------- fieldset condicional ---------- */
.field-group{border:1px dashed var(--border-strong);border-radius:var(--r);padding:14px;margin-bottom:14px;}
.field-group-title{font-family:var(--font-b);font-weight:600;font-size:12px;color:var(--text2);margin-bottom:10px;text-transform:uppercase;letter-spacing:.03em;}
.alert-box{border-radius:var(--r);padding:14px 16px;margin-bottom:20px;font-family:var(--font-b);font-size:13px;}
.alert-box.alert-info{background:var(--primary-tint);color:var(--primary-dark);}

.article-body{max-width:66ch;font-size:17px;line-height:1.72;}
.article-body p{margin:0 0 1.15em;}
/* Entradilla: el primer párrafo entra por los ojos y da el tono */
.article-body > p:first-of-type{font-size:19px;line-height:1.65;color:var(--text);}
.article-body h2{
  margin:2.1em 0 .45em;font-size:23px;letter-spacing:-.015em;
  padding-top:1.1em;border-top:1px solid var(--border);
  scroll-margin-top:80px; /* para que el ancla no quede bajo la cabecera fija */
  position:relative;
}
.article-body h2:first-child{border-top:none;padding-top:0;margin-top:0;}
.article-body h2 .ancla{
  position:absolute;left:-22px;top:1.15em;opacity:0;
  color:var(--primary);text-decoration:none;font-weight:400;
  transition:opacity .12s;
}
.article-body h2:hover .ancla,.article-body h2 .ancla:focus{opacity:1;}
.article-body h3{margin:1.6em 0 .4em;font-size:18px;}
.article-body strong{color:var(--text);font-weight:650;}
.article-body a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;color:var(--text);}
.article-body li::marker{color:var(--primary);}

/* Cabecera del artículo: fecha, tiempo de lectura y una línea que separa */
.article-meta{
  font-family:var(--font-b);font-size:13px;color:var(--text2);
  margin:-4px 0 22px;padding-bottom:16px;border-bottom:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.article-meta .sep{opacity:.5;}

/* Listado del blog: una entrada por fila, con fecha, titular y de qué
   herramientas habla. Antes eran tarjetas iguales que las de calculadora, que
   para un titular largo se quedaban cortas. */
.blog-lista{display:flex;flex-direction:column;}
.blog-entrada{
  display:block;padding:20px 0;border-bottom:1px solid var(--border);
  transition:padding-left .12s;
}
.blog-entrada:first-child{padding-top:4px;}
.blog-entrada:hover{padding-left:8px;}
.blog-entrada:hover .blog-titulo{color:var(--primary);}
.blog-fecha{
  display:block;font-family:var(--font-b);font-size:12px;color:var(--text2);
  text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px;
}
.blog-titulo{
  display:block;font-family:var(--font-h);font-weight:700;font-size:20px;
  line-height:1.3;letter-spacing:-.015em;color:var(--text);margin-bottom:6px;
  transition:color .12s;
}
.blog-extracto{
  display:block;font-family:var(--font-b);font-size:14.5px;line-height:1.55;
  color:var(--text2);max-width:70ch;
}
/* Catálogo completo de la portada: 41 herramientas sin abrumar, en columnas
   por categoría. Sirve para el visitante y para que Google llegue a todo
   desde la portada. */
.catalogo{display:grid;grid-template-columns:1fr;gap:22px;}
.catalogo-titulo{
  font-family:var(--font-b);font-size:13px;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;color:var(--text2);margin:0 0 10px;
  display:flex;align-items:center;gap:8px;
  padding-bottom:8px;border-bottom:1px solid var(--border);
}
.catalogo-titulo a{color:var(--text2);}
.catalogo-titulo a:hover{color:var(--primary);}
.catalogo-cuenta{
  font-size:11px;background:var(--primary-tint);color:var(--primary);
  padding:1px 7px;border-radius:999px;letter-spacing:0;
}
.catalogo-lista{list-style:none;font-family:var(--font-b);font-size:14.5px;}
.catalogo-lista li{margin-bottom:7px;line-height:1.35;}
.catalogo-lista a{color:var(--text);}
.catalogo-lista a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}

.aviso-compartido{
  background:var(--primary-tint);color:var(--primary);
  border-radius:var(--r);padding:10px 12px;margin:0 0 14px;font-weight:600;
}

.badge-tipo{
  background:var(--bg);color:var(--text2);border:1px solid var(--border);
  font-weight:600;font-size:10.5px;text-transform:uppercase;letter-spacing:.04em;
  padding:2px 7px;border-radius:999px;margin-left:8px;vertical-align:middle;
}
.search-suggestion-item /* Catálogo completo de la portada: 41 herramientas sin abrumar, en columnas
   por categoría. Sirve para el visitante y para que Google llegue a todo
   desde la portada. */
.catalogo{display:grid;grid-template-columns:1fr;gap:22px;}
.catalogo-titulo{
  font-family:var(--font-b);font-size:13px;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;color:var(--text2);margin:0 0 10px;
  display:flex;align-items:center;gap:8px;
  padding-bottom:8px;border-bottom:1px solid var(--border);
}
.catalogo-titulo a{color:var(--text2);}
.catalogo-titulo a:hover{color:var(--primary);}
.catalogo-cuenta{
  font-size:11px;background:var(--primary-tint);color:var(--primary);
  padding:1px 7px;border-radius:999px;letter-spacing:0;
}
.catalogo-lista{list-style:none;font-family:var(--font-b);font-size:14.5px;}
.catalogo-lista li{margin-bottom:7px;line-height:1.35;}
.catalogo-lista a{color:var(--text);}
.catalogo-lista a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}

.aviso-compartido{
  background:var(--primary-tint);color:var(--primary);
  border-radius:var(--r);padding:10px 12px;margin:0 0 14px;font-weight:600;
}

.badge-tipo{float:right;margin-left:12px;}

.blog-etiquetas{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;}
.blog-etiqueta{
  font-family:var(--font-b);font-size:11.5px;font-weight:600;
  background:var(--primary-tint);color:var(--primary);
  padding:3px 9px;border-radius:999px;
}

/* Entradilla: el extracto del artículo, en grande y en la tipografía de los
   titulares, para que la portada del artículo respire antes del texto */
.article-standfirst{
  font-family:var(--font-h);font-weight:400;font-size:18px;line-height:1.5;
  color:var(--text2);margin:0 0 14px;max-width:60ch;
}

/* Barra de progreso de lectura */
.lectura-progreso{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:var(--primary);transition:width .08s linear;
}

/* Dos columnas en pantallas anchas: texto e índice fijo al lado */
.article-layout{display:block;}

/* Índice automático, solo en artículos con varias secciones */
.article-toc{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:16px 18px;margin:0 0 28px;max-width:66ch;
}
.article-toc-title{
  font-family:var(--font-b);font-weight:600;font-size:12px;text-transform:uppercase;
  letter-spacing:.05em;color:var(--text2);margin-bottom:10px;
}
.article-toc ol{list-style:none;counter-reset:toc;font-family:var(--font-b);font-size:14.5px;}
.article-toc li{counter-increment:toc;margin-bottom:6px;line-height:1.45;}
.article-toc li::before{content:counter(toc) '.';color:var(--primary);font-weight:600;margin-right:8px;}
.article-toc a{color:var(--text);}
.article-toc a:hover{color:var(--primary);}

/* Pie del artículo */
.article-nav{border-top:1px solid var(--border);padding-top:18px;margin-top:8px;}

.tabla-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.tabla-datos{width:100%;border-collapse:collapse;font-family:var(--font-b);font-size:13.5px;min-width:420px;}
.tabla-datos th,.tabla-datos td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--border);font-variant-numeric:tabular-nums;}
.tabla-datos thead th{font-weight:600;font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.03em;border-bottom:1.5px solid var(--border-strong);}
.tabla-datos tbody th{font-weight:700;color:var(--text);}
.tabla-datos tbody tr:hover{background:var(--bg);}
.dato-vacio{color:var(--text2);font-size:12.5px;}
.lista-fuentes{list-style:disc;padding-left:18px;font-family:var(--font-b);font-size:13.5px;color:var(--text2);}
.lista-fuentes li{margin-bottom:.3em;}

/* ---------- filas dinamicas (asignaturas, notas) ---------- */
.row-inline{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin-bottom:10px;}
.row-inline .field{flex:1 1 110px;margin-bottom:0;}
.row-inline .btn{min-height:44px;padding:0 14px;flex:0 0 auto;}
.alert-box strong{display:block;margin-bottom:2px;}

.ad-slot{
  max-width:var(--container);margin:0 auto;padding:0 16px;
  display:flex;align-items:center;justify-content:center;
}
.ad-slot-inner{width:100%;min-height:100px;display:flex;align-items:center;justify-content:center;}
.ad-slot-label{font-family:var(--font-b);font-size:10px;color:var(--text2);text-align:center;letter-spacing:.06em;text-transform:uppercase;margin:0 0 4px;}

/* ---------- pie de pagina ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--border);margin-top:32px;padding:32px 16px;}
.site-footer-inner{
  max-width:var(--container);margin:0 auto;
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.footer-col{display:flex;flex-direction:column;gap:8px;font-family:var(--font-b);font-size:13px;color:var(--text2);}
.footer-col a{color:var(--text2);transition:color .12s;}
.footer-col a:hover{color:var(--primary);}
.footer-col-title{font-weight:600;color:var(--text);font-size:13px;margin-bottom:2px;}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .tool-card:hover,.category-card:hover,.btn:active{transform:none;}
}

/* =========================================================
   Escritorio
   ========================================================= */
@media (min-width:560px){
  .tool-grid{grid-template-columns:repeat(2,1fr);}
}

@media (min-width:768px){
  .site-header-inner{flex-wrap:nowrap;}

  .site-nav{display:flex;gap:14px;order:2;flex-wrap:wrap;}
  .site-nav a{font-family:var(--font-b);font-weight:500;font-size:14px;color:var(--text2);}
  .site-nav a:hover{color:var(--primary);}

  .search-bar{order:3;flex:0 1 260px;}
  .menu-toggle{display:none;}
  .theme-toggle{order:4;margin-left:8px;}
  .mobile-nav{display:none !important;}

  .hero{padding:64px 24px 40px;}
  .hero-title{font-size:38px;letter-spacing:-.02em;}
  .hero-tagline{font-size:18px;}
  .hero-sub{font-size:15px;}

  h1{font-size:31px;}
  h2{font-size:23px;}
  .article-body{font-size:18px;}
  .blog-titulo{font-size:23px;}
  .article-body > p:first-of-type{font-size:20px;}
  .article-body h2{font-size:26px;}
  .section{padding:32px 24px;}
  .section-title{font-size:21px;margin-bottom:18px;}
  .card{padding:24px;}
  .breadcrumb{padding:0 24px;}
  .ad-slot{padding:0 24px;}

  .category-grid{grid-template-columns:repeat(3,1fr);gap:14px;}
  .catalogo{grid-template-columns:repeat(2,1fr);gap:28px 40px;}
  .tool-grid{grid-template-columns:repeat(3,1fr);gap:14px;}
  .site-footer{margin-top:48px;padding:40px 24px;}
  .site-footer-inner{grid-template-columns:repeat(4,1fr);}
}

@media (min-width:1024px){
  /* Con ocho categorías, cuatro columnas dejan dos filas iguales;
     seis dejaba dos huérfanas en la segunda fila. */
  .category-grid{grid-template-columns:repeat(4,1fr);}
  .catalogo{grid-template-columns:repeat(4,1fr);gap:32px;}

  /* Artículo: el texto a la izquierda y el índice fijo a la derecha, que
     aprovecha el hueco que dejaba la medida de lectura. */
  .article-layout{display:grid;grid-template-columns:minmax(0,66ch) 1fr;gap:48px;align-items:start;}
  .article-layout .article-toc{
    grid-column:2;grid-row:1;
    position:sticky;top:84px;margin:0;background:none;border:none;padding:0;
    border-left:2px solid var(--border);padding-left:18px;
  }
  .article-layout .article-body{grid-column:1;grid-row:1;}
  .article-toc li{font-size:14px;}
  .article-standfirst{font-size:20px;}
}