/* Útiles de texto y documentos de la tanda 8 (4-oct-2026): generador de
   nicks, minificar código, probar expresiones regulares, conversor de bases,
   test de mecanografía, test de clics y generador de facturas.
   Complementa a utiles-herramientas.css: todos los colores salen de sus
   variables --uth-* (que ya traen su respaldo de tokens.css). El «papel»
   de la vista previa de la factura es el color del documento, no del tema. */
.uth{--ut8-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;--ut8-papel:var(--uth-papel,var(--uth-texto))}

/* Piezas comunes */
.ut8-marco,.ut8-meca{display:grid;gap:16px;min-width:0}
.ut8-mono{font-family:var(--ut8-mono)}
.ut8-titulo{margin:0;font-size:15px;font-weight:600;color:var(--uth-texto)}
.ut8-tenue{color:var(--uth-tenue)}
.ut8-fila{display:flex;flex-wrap:wrap;align-items:center;gap:10px;min-width:0}
.ut8-opciones{display:grid;gap:6px}
.ut8-caja{display:grid;gap:12px}
.ut8-resumen{margin:0;font-size:14px;color:var(--uth-suave);overflow-wrap:anywhere}
.ut8-corto{min-height:0}
.ut8-corto-1{max-width:6em}
.ut8-corto-3{max-width:8em;text-transform:uppercase}
.ut8-seccion{display:grid;gap:12px;margin:0;padding:14px;border:1px solid var(--uth-borde);border-radius:12px;min-width:0}
.ut8-seccion legend{padding:0 6px;font-weight:600}
.ut8-chuleta{border:1px solid var(--uth-borde);border-radius:12px;padding:10px 12px;background:var(--uth-fondo)}
.ut8-chuleta summary{cursor:pointer;font-weight:600;min-height:32px;display:flex;align-items:center}
.ut8-chuleta summary:focus-visible{outline:2px solid var(--uth-acento);outline-offset:2px;border-radius:6px}
.ut8-chuleta[open] summary{margin-bottom:10px}

/* Tablas (grupos de la expresión regular, historial, marcas) */
.ut8-tabla-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--uth-borde);border-radius:10px}
.ut8-tabla-scroll:focus-visible{outline:2px solid var(--uth-acento);outline-offset:2px}
.ut8-tabla{width:100%;border-collapse:collapse;font-size:13px;line-height:1.4}
.ut8-tabla th,.ut8-tabla td{padding:7px 10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--uth-borde);overflow-wrap:anywhere}
.ut8-tabla thead th{position:sticky;top:0;background:var(--uth-sup);color:var(--uth-suave);font-weight:600;white-space:nowrap}
.ut8-tabla tbody tr:last-child th,.ut8-tabla tbody tr:last-child td{border-bottom:0}
.ut8-tabla-envoltura{display:grid;gap:8px;min-width:0}

/* Conversor de bases */
.ut8-base{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:10px}
.ut8-base-otra{display:grid;grid-template-columns:minmax(110px,170px) minmax(0,1fr);gap:10px;min-width:0}
.ut8-base input,.ut8-c2{font-family:var(--ut8-mono);overflow-wrap:anywhere}
.ut8-c2{display:inline-block;min-height:1.5em;font-size:16px;color:var(--uth-texto)}
@media(max-width:560px){.ut8-base-otra{grid-template-columns:minmax(0,1fr)}}

/* Minificar código */
.ut8-codigo{font-family:var(--ut8-mono);font-size:13px;line-height:1.5;white-space:pre;overflow:auto;tab-size:2}

/* Probar expresiones regulares */
.ut8-regex-caja{display:flex;align-items:center;gap:6px;min-width:0}
.ut8-regex-caja input{flex:1 1 auto;min-width:0;font-family:var(--ut8-mono)}
.ut8-regex-caja > span{font-size:18px}
.ut8-regex-literal{min-width:0;overflow-wrap:anywhere;font-size:13px;color:var(--uth-suave)}
.ut8-banderas{display:grid;gap:4px}
.ut8-regex-vista{min-height:4.5em;max-height:min(360px,50vh);overflow:auto;padding:10px 12px;border:1px solid var(--uth-borde);border-radius:10px;background:var(--uth-fondo);color:var(--uth-texto);font-size:14px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}
.ut8-marca{padding:1px 0;border-radius:3px;color:var(--uth-texto);background:color-mix(in srgb,var(--uth-acento) 32%,transparent);box-shadow:0 0 0 1px color-mix(in srgb,var(--uth-acento) 55%,transparent)}
.ut8-marca-b{background:color-mix(in srgb,var(--uth-aviso) 30%,transparent);box-shadow:0 0 0 1px color-mix(in srgb,var(--uth-aviso) 55%,transparent)}
.ut8-vacia{display:inline-block;width:2px;height:1.2em;vertical-align:text-bottom;padding:0;background:var(--uth-acento)}

/* Generador de nicks */
.ut8-nicks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:8px}
.ut8-nick{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"texto texto" "largo boton";align-items:center;gap:4px 10px;padding:10px 12px;background:var(--uth-fondo);border:1px solid var(--uth-borde);border-radius:10px;min-width:0}
.ut8-nick-texto{grid-area:texto;font-size:18px;line-height:1.45;color:var(--uth-texto);overflow-wrap:anywhere}
.ut8-nick-largo{grid-area:largo;font-size:12px}
.ut8-nick .uth-btn{grid-area:boton}

/* Test de mecanografía y test de clics */
.ut8-meca-opciones{align-items:flex-start;gap:12px 18px}
.ut8-meca-estado{justify-content:space-between}
.ut8-reloj{font:600 28px/1.1 var(--ut8-mono);color:var(--uth-texto);font-variant-numeric:tabular-nums}
.ut8-meca-texto{position:relative;max-height:9.6em;overflow:hidden;padding:12px 14px;border:1px solid var(--uth-borde);border-radius:12px;background:var(--uth-fondo);color:var(--uth-tenue);font-size:20px;line-height:1.6;overflow-wrap:break-word;user-select:none}
.ut8-meca-texto .ut8-ok{color:var(--uth-texto)}
.ut8-meca-texto .ut8-mal{color:var(--uth-peligro);background:color-mix(in srgb,var(--uth-peligro) 18%,transparent);border-radius:2px}
.ut8-meca-texto .ut8-cursor{box-shadow:inset 2px 0 0 var(--uth-acento);animation:ut8-parpadeo 1s steps(2,start) infinite}
@keyframes ut8-parpadeo{to{box-shadow:inset 2px 0 0 transparent}}
.ut8-meca-entrada{font-size:18px}
.ut8-meca-resultado{display:grid;gap:10px;padding:14px;border:1px solid var(--uth-acento);border-radius:12px;background:color-mix(in srgb,var(--uth-acento) 8%,var(--uth-fondo))}
.ut8-datos{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,140px),1fr));gap:10px}
.ut8-dato{display:grid;gap:2px}
.ut8-dato strong{font:600 28px/1.1 var(--ut8-mono);color:var(--uth-texto);font-variant-numeric:tabular-nums}
.ut8-dato span{font-size:13px;color:var(--uth-suave)}
.ut8-historial{display:grid;gap:8px}
.ut8-clics-zona{display:grid;place-items:center;align-content:center;gap:8px;width:100%;min-height:clamp(200px,40vh,320px);padding:20px;border:2px dashed var(--uth-borde);border-radius:16px;background:var(--uth-fondo);color:var(--uth-texto);font:inherit;cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent;transition:transform .06s ease,border-color .15s ease}
.ut8-clics-zona:hover{border-color:var(--uth-acento)}
.ut8-clics-zona:focus-visible{outline:2px solid var(--uth-acento);outline-offset:3px}
.ut8-clics-zona:disabled{cursor:default;opacity:.75}
.ut8-clics-zona.is-golpe{transform:scale(.985);border-color:var(--uth-acento)}
.ut8-clics-numero{font:600 56px/1 var(--ut8-mono);font-variant-numeric:tabular-nums}
.ut8-clics-texto{font-size:16px;color:var(--uth-suave);text-align:center}

/* Generador de facturas */
.ut8-factura{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:20px;align-items:start}
.ut8-factura-form{display:grid;gap:14px;min-width:0}
.ut8-factura-vista{position:sticky;top:12px;display:grid;gap:10px;min-width:0}
.ut8-lineas{display:grid;gap:10px}
.ut8-linea{display:grid;gap:8px;padding:12px;border:1px solid var(--uth-borde);border-radius:10px;background:var(--uth-fondo);min-width:0}
.ut8-linea-cab{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}
.ut8-linea-cab strong{font-size:13px;color:var(--uth-suave)}
.ut8-linea-total{margin-left:auto;font:600 14px/1.3 var(--ut8-mono);color:var(--uth-texto)}
.ut8-linea-cifras{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.ut8-linea input[aria-invalid="true"]{border-color:var(--uth-peligro);box-shadow:0 0 0 1px var(--uth-peligro)}
.ut8-totales{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 16px;margin:0;padding:12px 14px;border:1px solid var(--uth-borde);border-radius:10px;background:var(--uth-fondo);font-size:14px}
.ut8-totales dt{color:var(--uth-suave);overflow-wrap:anywhere}
.ut8-totales dd{margin:0;text-align:right;font-family:var(--ut8-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.ut8-totales .ut8-total{font-size:18px;font-weight:700;color:var(--uth-texto)}
.ut8-hoja{display:grid;place-items:center;min-height:240px;padding:10px;border:1px solid var(--uth-borde);border-radius:12px;background:var(--ut8-papel)}
.ut8-hoja-img{display:block;width:100%;height:auto;max-height:80vh;object-fit:contain;box-shadow:0 1px 4px color-mix(in srgb,var(--uth-fondo) 40%,transparent)}
.ut8-hoja-img:not([src]){visibility:hidden}
@media(max-width:960px){.ut8-factura{grid-template-columns:minmax(0,1fr)}.ut8-factura-vista{position:static}}
@media(max-width:560px){.ut8-linea-cifras{grid-template-columns:repeat(2,minmax(0,1fr))}.ut8-meca-texto{font-size:18px}.ut8-reloj{font-size:24px}}

@media(prefers-reduced-motion:reduce){
 .ut8-meca-texto .ut8-cursor{animation:none}
 .ut8-clics-zona,.ut8-clics-zona.is-golpe{transition:none;transform:none}
}