:root{
  --tinta:#1c1c1c; --texto:#1d1f24; --suave:#5d6670; --linea:#e1e6ea;
  --papel:#ffffff; --fondo:#f2f5f7; --acento:#19bbef; --acento-osc:#0a8fc0; --acento-bg:#e4f6fd;
  --ok:#0a8fc0; --ok-bg:#e4f6fd; --mal:#c62828; --radio:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--fondo);color:var(--texto);font-family:'Public Sans',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;font-size:16px;line-height:1.5}
a{color:var(--tinta)}
[hidden]{display:none!important}

.top{position:sticky;top:0;z-index:10;background:#161616;color:#fff;border-bottom:1px solid #000}
.top-in{max-width:880px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.marca{font-weight:700;letter-spacing:.01em;display:flex;align-items:center;gap:10px;white-space:nowrap}
.marca img{width:34px;height:34px;display:block}
.top-doc{font-size:13px;opacity:.8;text-align:right}
.progreso{height:3px;background:rgba(255,255,255,.1)}
.progreso span{display:block;height:100%;width:0;background:var(--acento);transition:width .15s}

.wrap{max-width:880px;margin:0 auto;padding:24px 16px 48px}
.card{background:var(--papel);border:1px solid var(--linea);border-radius:var(--radio);padding:28px;margin-bottom:20px}
.card h1{font-size:26px;line-height:1.2;margin:0 0 8px;color:var(--tinta);letter-spacing:-.01em}
.card h2{font-size:21px;margin:0 0 14px;color:var(--tinta)}
.lead{color:var(--suave);margin:0 0 22px}
.centro{text-align:center}
.centro .sello{margin:0 auto 12px}

.pasos{list-style:none;display:flex;gap:6px;padding:0;margin:0 0 18px;flex-wrap:wrap}
.pasos li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--suave);padding:6px 12px 6px 6px;border-radius:999px;background:transparent}
.pasos li span{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;border:1.5px solid #c3ccd3;font-size:12px;font-weight:700}
.pasos li.activo{background:var(--papel);color:var(--tinta);font-weight:600;box-shadow:0 0 0 1px var(--linea)}
.pasos li.activo span{background:var(--tinta);border-color:var(--tinta);color:#fff}
.pasos li.hecho span{background:var(--acento);border-color:var(--acento);color:#0b0b0b}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
.f{display:flex;flex-direction:column;gap:6px}
.f.full{grid-column:1 / -1}
.f>span{font-size:14px;font-weight:600;color:var(--tinta)}
.f input{font:inherit;padding:12px 14px;border:1.5px solid #cfd7dd;border-radius:8px;background:#fff;color:var(--texto);width:100%}
.f input:focus{outline:none;border-color:var(--acento);box-shadow:0 0 0 3px rgba(25,187,239,.25)}
.f.invalido input{border-color:var(--mal)}
.hint{font-size:12.5px;color:var(--suave)}
.err{display:none;font-size:12.5px;color:var(--mal)}
.f.invalido .err{display:block}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

.acciones{margin-top:24px;display:flex;justify-content:flex-end}
.btn{appearance:none;border:0;cursor:pointer;font:inherit;font-weight:600;background:var(--acento);color:#0b0b0b;padding:14px 22px;border-radius:8px;text-decoration:none;display:inline-block}
.btn:hover{background:#0faee2}
.btn:disabled{background:#c9d2d8;color:#6b747c;cursor:not-allowed}
.btn-chico{padding:8px 14px;font-size:14px}
.btn-firma{width:100%;font-size:17px;padding:16px}
.link{background:none;border:0;padding:0;font:inherit;color:var(--tinta);text-decoration:underline;cursor:pointer}

.aviso-lectura{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:var(--acento-bg);border:1px solid #b6e6f8;border-radius:var(--radio);padding:12px 16px;margin-bottom:16px;font-size:14.5px}
.hoja{background:var(--papel);border:1px solid var(--linea);border-radius:var(--radio);padding:48px 56px;margin-bottom:20px;box-shadow:0 1px 0 rgba(0,0,0,.02),0 12px 32px -20px rgba(0,0,0,.25)}
.contrato .fill{background:#fff6e0;border-bottom:1.5px dashed #d99a00;padding:0 4px;border-radius:3px;color:#8a6100;font-style:italic}
.contrato .fill.lleno{background:var(--acento-bg);border-bottom:1.5px solid var(--acento);color:var(--tinta);font-style:normal;font-weight:600}

.firmar .resumen{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;margin:0 0 20px;padding:16px;background:var(--fondo);border-radius:8px}
.resumen dt{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--suave)}
.resumen dd{margin:2px 0 0;font-weight:600;color:var(--tinta);word-break:break-word}
.check{display:flex;gap:12px;align-items:flex-start;padding:16px;border:1.5px solid var(--linea);border-radius:8px;cursor:pointer;margin-bottom:10px;font-size:15.5px}
.check input{width:22px;height:22px;margin:1px 0 0;flex:none;accent-color:var(--acento-osc)}
.check.bloqueado{opacity:.55;cursor:not-allowed}
.check.marcado{border-color:var(--acento);background:var(--acento-bg)}
.nota{font-size:13px;color:var(--suave);margin:10px 0}
.alerta{color:var(--mal)}

.exito{display:flex;gap:18px;align-items:flex-start;border-color:#b6e6f8;background:var(--ok-bg)}
.exito h1{color:var(--ok)}
.exito .lead{margin:0;color:#24414d}
.sello{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--acento);color:#0b0b0b;font-size:24px;font-weight:700}

.registro{padding:28px 56px}
.registro h2{font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--suave);margin:0 0 14px}
.registro dl{margin:0;display:grid;gap:10px}
.registro dl>div{display:grid;grid-template-columns:180px 1fr;gap:12px;font-size:14.5px;border-bottom:1px solid #edf1f3;padding-bottom:8px}
.registro dt{color:var(--suave)}
.registro dd{margin:0}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
.rompe{word-break:break-all}
.chico{font-size:12.5px;color:var(--suave)}
.tag-ok{color:var(--ok);font-weight:600}
.tag-mal{color:var(--mal);font-weight:600}
.errores{color:var(--mal);padding-left:20px}

.login{max-width:420px;margin:40px auto}
.admin-top{display:flex;justify-content:space-between;align-items:center;gap:12px}
.tabla-scroll{overflow-x:auto}
table.admin{width:100%;border-collapse:collapse;font-size:14px}
table.admin th,table.admin td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--linea);vertical-align:top}
table.admin th{font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--suave)}

.pie{text-align:center;font-size:13px;color:var(--suave);padding:0 16px 32px}

@media (max-width:640px){
  .top-doc{display:none}
  .card{padding:22px 18px}
  .card h1{font-size:22px}
  .grid{grid-template-columns:1fr}
  .hoja{padding:28px 18px}
  .contrato{font-size:16px}
  .contrato .c-tabla td:first-child{width:auto}
  .registro{padding:22px 18px}
  .registro dl>div{grid-template-columns:1fr;gap:2px}
  .firmar .resumen{grid-template-columns:1fr}
  .acciones .btn{width:100%}
  .pasos li{font-size:13px}
}

@media print{
  body{background:#fff}
  .no-print,.top,.pie{display:none!important}
  .wrap{max-width:none;padding:0}
  .hoja{border:0;box-shadow:none;padding:0 0 12px;margin:0}
  .registro{break-inside:avoid;border-top:1px solid #ccc;padding-top:16px;margin-top:16px}
  .contrato h2{break-after:avoid}
  .c-firmas{break-inside:avoid}
}

.contrato .f-sello{height:88px;margin:2px 0 2px -6px;display:block}
.contrato .f-sello img{height:88px;width:auto;display:block}
@media print{.contrato .f-sello img{-webkit-print-color-adjust:exact;print-color-adjust:exact}}

/* ---- v3: encabezado con sesión, panel, responsive ---- */
.marca{color:#fff;text-decoration:none}
.top-der{display:flex;align-items:center;gap:14px;min-width:0}
.top-cuenta{display:flex;gap:14px}
.top-link{color:rgba(255,255,255,.72);text-decoration:none;font-size:13px;white-space:nowrap}
.top-link:hover{color:var(--acento)}
.doc-titulo{display:flex;flex-direction:column;gap:2px;margin:0 0 14px}
.eyebrow{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--acento-osc);font-weight:700}
.doc-nombre{font-size:15px;color:var(--suave)}
.exito{align-items:center}
.exito-txt{display:flex;align-items:center;justify-content:space-between;gap:16px;flex:1;flex-wrap:wrap}
.exito-txt h1{margin:0}
.btn-ancho{width:100%}
.login{max-width:440px;margin:24px auto}
.login form{display:flex;flex-direction:column;gap:14px}
.login .acciones{margin-top:6px}
.contador{display:inline-grid;place-items:center;min-width:28px;height:28px;padding:0 8px;border-radius:999px;background:var(--acento-bg);color:var(--acento-osc);font-size:15px;vertical-align:middle}
.ok-txt{color:var(--acento-osc)}
.lista{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.item{border:1px solid var(--linea);border-radius:var(--radio);padding:16px 18px;display:grid;grid-template-columns:1fr auto;gap:10px 20px;align-items:start}
.item-titulo{font-weight:700;color:var(--tinta);font-size:17px}
.item-sub{font-size:13.5px;color:var(--suave)}
.item-datos{grid-column:1 / -1;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px;font-size:14px}
.item-datos dt{font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--suave)}
.item-datos dd{margin:1px 0 0}
.item-acc{grid-column:2;grid-row:1;display:flex;align-items:center;gap:14px}
.item-acc form{margin:0}
.link-mal{color:var(--mal);font-size:14px}

@media (max-width:640px){
  .top-in{padding:10px 16px}
  .marca span{font-size:15px}
  .top-der{gap:10px}
  .top-cuenta{gap:10px}
  .btn-chico{padding:7px 11px;font-size:13px}
  .exito{flex-direction:column;align-items:flex-start}
  .exito-txt{flex-direction:column;align-items:stretch;width:100%}
  .exito-txt .btn{width:100%;text-align:center}
  .item{grid-template-columns:1fr}
  .item-datos{grid-template-columns:1fr}
  .item-acc{grid-column:1;grid-row:auto;justify-content:space-between}
  body .contrato .c-tabla,body .contrato .c-tabla tbody,body .contrato .c-tabla tr,body .contrato .c-tabla td{display:block;width:100%}
  body .contrato .c-tabla thead{display:none}
  body .contrato .c-tabla tr{border:1px solid #d5dde3;border-radius:8px;margin-bottom:8px;overflow:hidden}
  body .contrato .c-tabla td{border:0;padding:8px 12px}
  body .contrato .c-tabla td:first-child{background:#eef3f6;width:100%}
  .top-der .btn-chico{display:none}
}
@media (max-width:380px){
  .marca span{display:none}
}

.btn-chico{white-space:nowrap}

/* ---- v4: botón de sesión visible ---- */
.top-link{display:inline-flex;align-items:center;gap:6px;color:#fff;font-size:13.5px;font-weight:600;padding:7px 14px;border:1.5px solid var(--acento);border-radius:8px;line-height:1}
.top-link:hover{background:var(--acento);color:#0b0b0b}
.top-link.solido{background:var(--acento);color:#0b0b0b}
.top-link.solido:hover{background:#0faee2}
.top-link svg{width:15px;height:15px;flex:none}
@media (max-width:640px){ .top-link{padding:7px 10px;font-size:13px} }