/* PDFácil — estilos comunes de todas las páginas */
:root{
  --acento:#005CFC; --acento-o:#004AD0; --acento-suave:#E8F0FF;
  --fondo:#F2F3F5; --superficie:#fff; --linea:#E3E5E9;
  --texto:#111418; --suave:#5F6672; --tenue:#8A909A; --peligro:#D42F2F; --ok:#1E9E57;
  --barra:56px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;background:var(--fondo);color:var(--texto);font-size:17px;line-height:1.4;-webkit-font-smoothing:antialiased;min-height:100vh}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
svg.i{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
[hidden]{display:none!important}

/* Barra superior */
.appbar{position:sticky;top:0;z-index:20;height:calc(var(--barra) + env(safe-area-inset-top));padding:env(safe-area-inset-top) 8px 0 4px;background:var(--superficie);border-bottom:1px solid var(--linea);display:flex;align-items:center;gap:4px}
.appbar h1{flex:1;margin:0 0 0 12px;font-size:19px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.appbar .icono-btn + h1{margin-left:0}
.marca-app{display:flex;align-items:center;gap:10px;margin-left:8px;font-weight:700;font-size:20px;flex:1}
.marca-app img{width:32px;height:32px;border-radius:9px}
.icono-btn{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;flex:none}
.icono-btn:hover{background:var(--fondo)}
.txt-btn{display:flex;align-items:center;gap:6px;height:40px;padding:0 12px;border-radius:20px;color:var(--acento);font-weight:600;font-size:16px;white-space:nowrap}
.txt-btn:hover{background:var(--acento-suave)}

main{max-width:820px;margin:0 auto}
.pantalla{display:none;padding:16px 16px 190px}
.pantalla.on{display:block}

/* Botones */
.btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:56px;padding:0 16px;border-radius:14px;font-size:18px;font-weight:600;transition:background .15s,transform .1s;text-align:center}
.btn:active{transform:scale(.985)}
.btn-1{background:var(--acento);color:#fff}
.btn-1:hover{background:var(--acento-o)}
.btn-2{background:var(--superficie);color:var(--texto);border:1px solid var(--linea)}
.btn-2:hover{background:#fafbfc}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* Pie fijo (zona del pulgar) */
.pie{position:fixed;left:0;right:0;bottom:0;z-index:15;background:var(--superficie);border-top:1px solid var(--linea);padding:12px 16px calc(12px + env(safe-area-inset-bottom))}
.pie .dentro{max-width:520px;margin:0 auto;display:grid;gap:10px}
.privado{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--tenue);font-size:14px}
.privado svg{width:16px;height:16px}
.fila-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* Estado vacío de cada herramienta */
.vacio{min-height:calc(100vh - var(--barra) - 240px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px 8px}
.vacio .ico-grande{width:96px;height:96px;border-radius:24px;display:grid;place-items:center;margin-bottom:20px}
.vacio .ico-grande svg{width:48px;height:48px;stroke-width:1.6}
.vacio h2{margin:0 0 6px;font-size:22px}
.vacio p{margin:0;color:var(--suave);max-width:340px}
body.soltando::after{content:"Suelta los archivos aquí";position:fixed;inset:var(--barra) 0 0;background:rgba(232,240,255,.94);border:3px dashed var(--acento);display:grid;place-items:center;font-size:22px;font-weight:600;color:var(--acento-o);z-index:30}

.pista{color:var(--suave);font-size:15px;margin:0 0 14px}
.tarjeta{background:var(--superficie);border-radius:16px;padding:16px}

/* Cuadrícula de páginas / fotos */
.rejilla{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.celda{position:relative;aspect-ratio:3/4;background:#E6E8EC;border-radius:12px;display:grid;place-items:center;padding:12px;outline:3px solid transparent;outline-offset:-3px;transition:outline-color .15s,background .15s;width:100%}
.celda.sel{outline-color:var(--acento);background:var(--acento-suave)}
.pag{position:relative;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.18);overflow:hidden;max-width:100%;max-height:100%}
.pag img,.pag canvas{position:absolute;display:block}
.pag > canvas.lleno,.pag > img.lleno{inset:0;width:100%;height:100%}
.num{position:absolute;left:8px;bottom:8px;min-width:26px;height:26px;padding:0 8px;border-radius:13px;background:rgba(17,20,24,.72);color:#fff;font-size:13px;font-weight:600;display:grid;place-items:center}
.celda.sel .num{background:var(--acento)}
.check{position:absolute;right:8px;top:8px;width:26px;height:26px;border-radius:50%;background:var(--acento);color:#fff;display:none;place-items:center}
.check svg{width:16px;height:16px;stroke-width:3}
.celda.sel .check{display:grid}
.celda-mas{aspect-ratio:3/4;border-radius:12px;border:2px dashed #C5CAD3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--suave);font-size:15px;font-weight:600;width:100%}
.celda-mas:hover{border-color:var(--acento);color:var(--acento)}
.celda-mas svg{width:30px;height:30px}

/* Barra de herramientas sobre el botón principal */
.herr{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;padding-bottom:4px;border-bottom:1px solid var(--linea)}
.herr button{min-height:58px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:13px;font-weight:500;color:var(--suave)}
.herr button svg{color:var(--texto)}
.herr button:hover:not(:disabled){background:var(--fondo)}
.herr button:disabled{opacity:.3;cursor:default}
.herr .peligro,.herr .peligro svg{color:var(--peligro)}

/* Lista de archivos (Unir) */
.lista{display:grid;gap:10px}
.item{display:flex;align-items:center;gap:12px;background:var(--superficie);border-radius:14px;padding:10px}
.item .mini{width:52px;height:68px;flex:none;background:#E6E8EC;border-radius:6px;display:grid;place-items:center;overflow:hidden}
.item .mini canvas,.item .mini img{max-width:100%;max-height:100%;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.item .txt{flex:1;min-width:0}
.item .txt b{display:block;font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .txt small{color:var(--tenue);font-size:14px}
.item .acc{display:flex;gap:2px}
.item .acc button{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;color:var(--suave)}
.item .acc button:hover:not(:disabled){background:var(--fondo);color:var(--texto)}
.item .acc button:disabled{opacity:.25}
.item .acc .peligro{color:var(--peligro)}

/* Hoja (panel que sube) */
.velo{position:fixed;inset:0;background:rgba(0,0,0,.38);z-index:40;opacity:0;pointer-events:none;transition:opacity .2s}
.velo.on{opacity:1;pointer-events:auto}
.hoja{position:fixed;left:0;right:0;bottom:0;z-index:41;background:var(--superficie);border-radius:20px 20px 0 0;max-height:90vh;overflow:auto;transform:translateY(100%);transition:transform .28s cubic-bezier(.2,.8,.2,1);padding:8px 20px calc(20px + env(safe-area-inset-bottom));max-width:560px;margin:0 auto}
.hoja.on{transform:none}
.hoja:not(.on){visibility:hidden;transition:transform .28s,opacity .2s,visibility 0s .28s}
.agarre{width:40px;height:5px;border-radius:3px;background:#D5D8DD;margin:0 auto 12px}
.hoja h3{margin:0 0 6px;font-size:19px}
.fila{padding:14px 0;border-bottom:1px solid var(--linea)}
.fila:last-of-type{border:0}
.fila > label,.fila > span{display:block;font-size:15px;color:var(--suave);margin-bottom:8px}
input[type=text],input[type=password],input[type=number]{width:100%;height:50px;border:1px solid var(--linea);border-radius:12px;padding:0 14px;font-size:17px;background:var(--fondo);font-family:inherit;color:inherit}
input[type=text]:focus,input[type=password]:focus,input[type=number]:focus{outline:2px solid var(--acento);background:#fff}
.seg{display:flex;background:var(--fondo);border-radius:12px;padding:3px;flex-wrap:wrap}
.seg label{flex:1;position:relative;min-width:70px}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:grid;place-items:center;min-height:42px;border-radius:9px;font-size:15px;font-weight:500;color:var(--suave);cursor:pointer;text-align:center;line-height:1.1;padding:4px}
.seg input:checked + span{background:#fff;color:var(--texto);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.14)}
.seg input:focus-visible + span{outline:2px solid var(--acento)}
@media (min-width:700px){
  .hoja{bottom:auto;top:50%;border-radius:20px;transform:translateY(-40%);opacity:0;pointer-events:none;transition:all .2s}
  .hoja.on{transform:translateY(-50%);opacity:1;pointer-events:auto}
  .agarre{display:none}
  .rejilla{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
}

/* Pantalla final */
.resumen{display:flex;flex-direction:column;align-items:center;text-align:center;padding:24px 0 8px}
.portadilla{width:150px;aspect-ratio:3/4;display:grid;place-items:center;margin-bottom:18px;position:relative}
.portadilla .ok{position:absolute;right:-10px;bottom:-10px;width:40px;height:40px;border-radius:50%;background:var(--ok);color:#fff;display:grid;place-items:center;border:3px solid var(--fondo)}
.portadilla .ok svg{width:22px;height:22px;stroke-width:3}
.resumen h2{margin:0;font-size:22px;word-break:break-word}
.resumen p{margin:4px 0 0;color:var(--suave)}
.ahorro{display:inline-block;margin-top:10px;background:#E3F6EA;color:#0E7A3D;font-weight:600;padding:6px 14px;border-radius:20px;font-size:15px}
.lista-arch{background:var(--superficie);border-radius:14px;margin:18px 0 0;padding:4px 16px;width:100%;max-width:440px;text-align:left}
.lista-arch div{padding:12px 0;border-bottom:1px solid var(--linea);display:flex;justify-content:space-between;gap:10px;font-size:15px}
.lista-arch div:last-child{border:0}
.lista-arch b{font-weight:600;word-break:break-all}
.lista-arch span{color:var(--tenue);white-space:nowrap}
.siguiente{width:100%;max-width:440px;margin-top:26px;text-align:left}
.siguiente h3{font-size:15px;color:var(--suave);font-weight:600;margin:0 0 10px}
.siguiente a{display:flex;align-items:center;gap:12px;background:var(--superficie);border-radius:14px;padding:12px 14px;margin-bottom:8px}
.siguiente a:hover{background:#fafbfc}
.siguiente a .ico{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none}
.siguiente a b{display:block;font-weight:600}
.siguiente a small{color:var(--tenue);font-size:14px}
.siguiente a > svg{margin-left:auto;color:var(--tenue)}
.enlaces{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}

/* Cargando y avisos */
.cargando{position:fixed;inset:0;z-index:60;background:rgba(255,255,255,.9);display:none;place-items:center;text-align:center;color:var(--suave);font-size:16px;padding:20px}
.cargando.on{display:grid}
.rueda{width:40px;height:40px;border:4px solid #DDE1E7;border-top-color:var(--acento);border-radius:50%;margin:0 auto 12px;animation:gira .8s linear infinite}
@keyframes gira{to{transform:rotate(360deg)}}
.barra-prog{width:220px;height:6px;border-radius:3px;background:#DDE1E7;margin:12px auto 0;overflow:hidden}
.barra-prog i{display:block;height:100%;width:0;background:var(--acento);transition:width .2s}
.aviso{position:fixed;left:16px;right:16px;bottom:calc(160px + env(safe-area-inset-bottom));max-width:480px;margin:0 auto;background:#23272E;color:#fff;border-radius:12px;padding:6px 6px 6px 16px;min-height:52px;display:flex;align-items:center;gap:10px;font-size:15px;z-index:70;opacity:0;transform:translateY(10px);pointer-events:none;transition:all .2s}
.aviso.on{opacity:1;transform:none;pointer-events:auto}
.aviso span{flex:1}
.aviso button{color:#8FB4FF;font-weight:600;padding:10px 12px;border-radius:8px}

/* Colores por grupo de herramienta */
.g-azul{background:#E8F0FF;color:#0050E0}
.g-verde{background:#E3F6EA;color:#14864A}
.g-naranja{background:#FFF0E0;color:#C25E00}
.g-morado{background:#F0E9FF;color:#6B3FD1}
.g-rojo{background:#FDE8E8;color:#C42B2B}
.g-gris{background:#ECEEF1;color:#4A515C}