:root {
  --azul: #2C3E50;
  --azul-claro: #2980B9;
  --fondo: #F4F6F7;
  --tarjeta: #FFFFFF;
  --texto: #1C2833;
  --suave: #7F8C8D;
  --borde: #D5DBDB;
  --rojo: #C0392B;
  --verde: #1E8449;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #121417;
    --tarjeta: #1E2227;
    --texto: #ECF0F1;
    --suave: #95A5A6;
    --borde: #34495E;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 16px;
  padding-bottom: env(safe-area-inset-bottom);
}
.barra {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; gap: 8px;
  background: var(--azul); color: #fff;
  padding: calc(10px + env(safe-area-inset-top)) 12px 10px;
}
.barra h1 { flex: 1; font-size: 18px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icono { background: none; border: 0; color: #fff; font-size: 22px; min-width: 44px; min-height: 44px; padding: 0; }
main { max-width: 640px; margin: 0 auto; padding: 12px 16px 32px; }
.tarjeta {
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 12px;
  padding: 14px; margin: 0 0 12px;
}
fieldset.tarjeta { min-width: 0; }
legend { font-weight: 700; color: var(--azul-claro); padding: 0 4px; }
label { display: block; font-size: 14px; color: var(--suave); margin: 8px 0; }
input, textarea {
  display: block; width: 100%; margin-top: 4px;
  font: inherit; color: var(--texto); background: var(--fondo);
  border: 1px solid var(--borde); border-radius: 8px; padding: 10px;
}
input[type=search] { margin: 0 0 12px; }
input.error, textarea.error { border-color: var(--rojo); }
.msg-error { color: var(--rojo); font-size: 13px; margin-top: 2px; }
button, .boton {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-weight: 600; text-decoration: none;
  min-height: 44px; padding: 10px 14px; border-radius: 10px;
  border: 1px solid var(--borde); background: var(--tarjeta); color: var(--texto);
}
.primario { background: var(--azul-claro); border-color: var(--azul-claro); color: #fff; }
.peligro { color: var(--rojo); border-color: var(--rojo); background: transparent; }
.grande { width: 100%; font-size: 17px; margin-bottom: 12px; }
button:disabled { opacity: .6; }
#btn-salir { width: 100%; }
.botones { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.lista { list-style: none; margin: 0; padding: 0; }
.lista li {
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 8px; cursor: pointer;
}
.lista .fila1 { display: flex; justify-content: space-between; gap: 8px; font-weight: 700; }
.lista .fila2 { color: var(--suave); font-size: 14px; margin-top: 4px; overflow-wrap: anywhere; }
.vacio { text-align: center; color: var(--suave); padding: 32px 8px; }
.etiqueta { font-size: 12px; font-weight: 700; border-radius: 999px; padding: 2px 8px; white-space: nowrap; }
.etiqueta.activo { background: #D5F5E3; color: var(--verde); }
.etiqueta.anulado { background: #FADBD8; color: var(--rojo); }
.centrado { text-align: center; }
.centrado h2 { margin: 8px 0 4px; }
.ruta { margin: 0 0 8px; color: var(--suave); overflow-wrap: anywhere; }
.qr { width: min(78vw, 300px); height: auto; background: #fff; padding: 10px; border-radius: 8px; }
.ayuda { color: var(--suave); font-size: 14px; }
.datos { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 6px 10px; margin: 0; }
.datos dt { color: var(--suave); font-size: 14px; }
.datos dd { margin: 0; overflow-wrap: anywhere; }
.versiones { padding-left: 18px; color: var(--suave); font-size: 14px; }
.aviso-red { background: #F9E79F; color: #7D6608; text-align: center; font-size: 14px; padding: 6px; }
#toast {
  position: fixed; left: 16px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom));
  max-width: 600px; margin: 0 auto; background: var(--azul); color: #fff;
  border-radius: 10px; padding: 12px 14px; opacity: 0; transform: translateY(20px);
  transition: opacity .2s, transform .2s; pointer-events: none; z-index: 5;
}
#toast.visible { opacity: 1; transform: none; }
details { margin-top: 8px; }
summary { color: var(--azul-claro); cursor: pointer; padding: 6px 0; }

/* Firmas */
.sin-margen { margin-top: 0; }
.cabecera-lienzo { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.lienzo {
  display: block; width: 100%; height: 200px; touch-action: none;
  background: #fff; border: 1px dashed var(--suave); border-radius: 8px;
}
label.check { display: flex; gap: 10px; align-items: flex-start; color: var(--texto); }
label.check input { width: 22px; height: 22px; flex: none; margin: 2px 0 0; }
.firma-fila { border-top: 1px solid var(--borde); padding: 10px 0; }
.firma-fila:first-of-type { border-top: 0; }
.firma-fila .ok { color: var(--verde); font-weight: 600; font-size: 14px; }
.firma-fila .pend { font-size: 14px; }
.firma-fila .pend { color: var(--suave); }
.firma-fila .botones { margin: 8px 0 0; }
dialog { border: 0; border-radius: 12px; padding: 16px; width: min(92vw, 420px); background: var(--tarjeta); color: var(--texto); }
dialog::backdrop { background: rgba(0,0,0,.45); }
.cert-info { font-size: 14px; }

/* Sugerencias al escribir */
.con-sugerencias { position: relative; }
.sugerencias {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 4; margin: 2px 0 0; padding: 4px 0;
  list-style: none; background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .18); max-height: 280px; overflow-y: auto;
}
.sugerencias li { padding: 10px 12px; color: var(--texto); cursor: pointer; }
.sugerencias li + li { border-top: 1px solid var(--borde); }
.sugerencias li:active, .sugerencias li:hover { background: var(--fondo); }
.sugerencias small { display: block; color: var(--suave); font-size: 13px; overflow-wrap: anywhere; }
.fila-2 { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 10px; }
input[readonly] { color: var(--suave); }

/* Usuarios */
.lista-usuarios { list-style: none; margin: 0 0 8px; padding: 0; }
.lista-usuarios li { border-top: 1px solid var(--borde); padding: 10px 0; overflow-wrap: anywhere; }
.lista-usuarios li:first-child { border-top: 0; }
.lista-usuarios li.inactivo { color: var(--suave); }
.lista-usuarios .botones { margin: 8px 0 0; }

/* PIN recordado en el móvil */
.pin-movil { border-top: 1px solid var(--borde); margin-top: 12px; padding-top: 4px; }
.pin-movil button { width: 100%; margin-top: 6px; }
.oculto-visual {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); border: 0; white-space: nowrap;
}

/* Firma a pantalla completa */
.caja-firma {
  display: block; position: relative; width: 100%; height: 140px; margin: 8px 0 4px; padding: 0;
  background: #fff; border: 2px dashed var(--suave); border-radius: 10px;
}
.caja-firma canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.caja-firma span { position: relative; color: #566573; font-weight: 600; }
html.firmando, html.firmando body { overflow: hidden; overscroll-behavior: none; }
html.firmando body { position: fixed; left: 0; right: 0; width: 100%; }
.capa-firma {
  position: fixed; inset: 0; z-index: 20; display: flex; flex-direction: column;
  height: 100vh; height: 100dvh; background: #fff; touch-action: none;
  -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.capa-firma[hidden] { display: none; }
.capa-barra { display: flex; gap: 8px; padding: 8px; background: var(--azul); }
.capa-barra button { flex: 1; }
.capa-barra #firma-cancelar, .capa-barra #borrar { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.capa-zona { position: relative; flex: 1; min-height: 0; }
.capa-zona canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; z-index: 1; }
.linea-firma {
  position: absolute; left: 6%; right: 6%; bottom: 28%; border-top: 2px solid #D5DBDB;
  pointer-events: none;
}
.linea-firma span { position: absolute; top: 6px; left: 0; color: #95A5A6; font-size: 14px; }
.aviso-girar {
  position: absolute; top: 10px; left: 0; right: 0; margin: 0; text-align: center;
  color: #7F8C8D; font-size: 14px; pointer-events: none;
}