:root {
  --primary: #1f4e79; --bg: #f6f5f1; --card: #ffffff; --text: #1f2937; --muted: #6b7280; --border: #e5e7eb;
  --side: #1b2b3a; --side-text: #e5e7eb; --side-active: #2c3e50;
  --success: #15803d; --warning: #b45309; --danger: #b91c1c; --info: #1d4ed8; --radius: 10px;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif; color-scheme: light;
  --link: var(--primary);
}
[data-theme="dark"] {
  --bg: #0f172a; --card: #111827; --text: #e5e7eb; --muted: #9ca3af; --border: #243041;
  --side: #0b1220; --side-active: #1e293b; color-scheme: dark;
  --link: color-mix(in srgb, var(--primary) 40%, #fff);   /* el color de marca suele ser oscuro: sobre fondo oscuro no se lee */
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }   /* si no, "label { display:flex }" le gana al atributo hidden */
body { margin: 0; background: var(--bg); color: var(--text); font-size: 14px; }
.mono { font-family: Consolas, "Cascadia Mono", monospace; }
.muted { color: var(--muted); }
.cargando, .vacio { color: var(--muted); padding: 24px; text-align: center; }
a { color: var(--link); }

/* layout */
.shell { display: grid; grid-template-columns: 256px 1fr; min-height: 100vh; }
.side { background: var(--side); color: var(--side-text); display: flex; flex-direction: column; padding: 16px 12px; position: sticky; top: 0; height: 100vh; }
.marca { display: flex; gap: 10px; align-items: center; margin-bottom: 24px; }
.marca img { max-height: 36px; max-width: 64px; border-radius: 6px; background: #fff; }
.marca b { display: block; } .marca small { color: #9fb0c0; font-size: 12px; }
.avatar { width: 36px; height: 36px; border-radius: 8px; background: #f0a93b; color: #1b2b3a; display: grid; place-items: center; font-weight: 700; }
.menu-btn { display: none; margin-left: auto; background: none; border: 0; color: inherit; font-size: 20px; cursor: pointer; }
.nav-titulo { color: #9fb0c0; font-size: 12px; margin: 0 8px 6px; display: block; }
.side nav a { display: block; color: var(--side-text); text-decoration: none; padding: 10px 12px; border-radius: 8px; margin-bottom: 2px; }
.side nav a.activa, .side nav a:hover { background: var(--side-active); font-weight: 600; }
.side .pie { margin-top: auto; display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: #9fb0c0; }
.side .pie .link { color: var(--side-text); text-align: left; }
main { min-width: 0; }
.top { height: 52px; border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 24px; font-weight: 600; color: var(--muted); background: var(--card); }
.contenido { padding: 24px; max-width: 1100px; }
.titulo h1 { margin: 0 0 4px; font-size: 24px; } .titulo p { margin: 0 0 20px; color: var(--muted); }

/* piezas */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 16px; overflow-x: auto; }
.receptor { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { margin: 0; } .kpi small { display: block; color: var(--muted); text-transform: uppercase; font-size: 12px; letter-spacing: .03em; }
.kpi b { display: block; font-size: 20px; margin-top: 6px; font-family: Consolas, monospace; } .kpi span { color: var(--muted); font-size: 12px; }
.kpi.alerta { border-color: var(--warning); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.tab { background: none; border: 0; border-bottom: 2px solid transparent; padding: 8px 12px; cursor: pointer; color: var(--muted); font: inherit; }
.tab.activa { color: var(--link); border-bottom-color: var(--link); font-weight: 600; }
.filtros { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.filtros input[type=search] { flex: 1; min-width: 200px; }
.lista { display: flex; flex-direction: column; gap: 10px; }
.item { display: flex; justify-content: space-between; gap: 16px; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; cursor: pointer; background: var(--card); }
.item:hover, .item:focus { border-color: var(--primary); outline: none; }
.item-cab { display: flex; gap: 8px; align-items: center; margin-bottom: 4px; }
.item-sub { font-size: 12px; margin-bottom: 2px; }
.item-monto { text-align: right; white-space: nowrap; } .item-monto small { display: block; color: var(--muted); }
.item-monto b { font-family: Consolas, monospace; font-size: 16px; }
.pill { --c: var(--muted); display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
  color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.motivo { margin-top: 6px; color: var(--warning); font-size: 13px; }
.aviso { background: color-mix(in srgb, var(--info) 10%, transparent); border-left: 3px solid var(--info); padding: 8px 12px; border-radius: 6px; }
.aviso.alerta { background: color-mix(in srgb, var(--warning) 12%, transparent); border-left-color: var(--warning); }
.aviso-inline { color: var(--warning); font-weight: 400; }
.error { color: var(--danger); min-height: 1em; margin: 6px 0; }
dl.datos { display: grid; grid-template-columns: 180px 1fr; gap: 6px 16px; margin: 0 0 16px; } dl.datos dt { color: var(--muted); } dl.datos dd { margin: 0; }
.tabla { width: 100%; border-collapse: collapse; margin-bottom: 12px; } .tabla th, .tabla td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.tabla th { color: var(--muted); font-weight: 600; font-size: 12px; } .num { text-align: right !important; font-family: Consolas, monospace; }
.tabla.editable input { width: 100%; }
.timeline { list-style: none; padding: 0; margin: 0 0 16px; } .timeline li { display: flex; gap: 10px; padding: 6px 0; } .timeline p { margin: 4px 0 0; color: var(--muted); }
.punto { --c: var(--muted); width: 10px; height: 10px; border-radius: 50%; background: var(--c); margin-top: 5px; flex: none; }
.archivos { padding-left: 18px; }

/* formularios y botones */
label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 13px; margin-bottom: 12px; }
.filtros label { flex-direction: row; align-items: center; margin: 0; font-weight: 400; }
input, select, textarea { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text); font-weight: 400; }
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent); border-color: var(--primary); }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 12px; }
.grid3 input, .grid3 select { width: 100%; min-width: 0; }
/* Fechas dd/mm/aaaa (util.fechasAR): el input date queda escondido debajo del texto, solo para abrir el calendario. */
.fecha-ar { position: relative; display: inline-flex; align-items: center; gap: 4px; }
.fecha-ar input[type=text] { width: 9.5em; }
.fecha-ar input[type=date] { position: absolute; left: 0; bottom: 0; width: 1px; height: 1px; padding: 0; border: 0; opacity: 0; pointer-events: none; }
.fecha-cal { font: inherit; padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; background: var(--card); cursor: pointer; }
.grid3 .fecha-ar { display: flex; } .grid3 .fecha-ar input[type=text] { flex: 1; width: auto; }
.nro { display: flex; align-items: center; gap: 4px; } .nro input:first-child { width: 72px; flex: none; } .nro input:last-child { flex: 1; }
.tabla.editable td:first-child { width: 45%; }
.btn { font: inherit; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--border); background: var(--card); color: var(--text); cursor: pointer; font-weight: 600; }
.btn:disabled { opacity: .6; cursor: wait; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: none; border-style: dashed; }
.link { background: none; border: 0; padding: 0; color: var(--link); cursor: pointer; font: inherit; }
.drop { border: 2px dashed var(--border); border-radius: var(--radius); padding: 18px; text-align: center; cursor: pointer; display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.drop.sobre, .drop:focus { border-color: var(--link); outline: none; } .drop span { color: var(--muted); font-size: 12px; }
.drop.grande { min-height: 240px; justify-content: center; } .drop.grande b { font-size: 17px; }
details summary { cursor: pointer; font-weight: 600; margin-bottom: 8px; }

/* acceso */
.acceso { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.tarjeta-acceso { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 28px; width: min(420px, 100%); display: flex; flex-direction: column; }
.marca-acceso { text-align: center; margin-bottom: 8px; } .marca-acceso img { max-height: 48px; } .marca-acceso h1 { margin: 8px 0 0; font-size: 20px; } .marca-acceso p { color: var(--muted); margin: 4px 0; }
.tarjeta-acceso a { text-align: center; margin-top: 12px; }

/* modal, drawer y toast */
.modal-backdrop { position: fixed; inset: 0; background: rgba(15, 23, 42, .55); display: none; align-items: center; justify-content: center; padding: 16px; z-index: 10; }
.modal-backdrop.open { display: flex; }
.modal { background: var(--card); border-radius: 14px; width: min(640px, 100%); max-height: calc(100vh - 32px); overflow: auto; padding: 20px 24px; }
.modal header { display: flex; justify-content: space-between; align-items: start; gap: 12px; } .modal header h2 { margin: 0; font-size: 18px; } .modal header p { margin: 4px 0 12px; color: var(--muted); }
.modal footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.cerrar { background: none; border: 0; font-size: 18px; cursor: pointer; color: var(--muted); }
.modal.drawer { margin-left: auto; height: calc(100vh - 32px); width: min(520px, 100%); }
.modal.ancho { width: min(880px, 100%); }
.bloqueo { position: fixed; inset: 0; z-index: 15; display: grid; place-content: center; justify-items: center; gap: 10px; text-align: center;
  background: rgba(15, 23, 42, .35); backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); color: #fff; cursor: wait; outline: none; }
.bloqueo b { font-size: 16px; text-shadow: 0 1px 2px rgba(0, 0, 0, .5); } .bloqueo span { font-size: 13px; opacity: .9; }
.spinner { width: 52px; height: 52px; border-radius: 50%; border: 5px solid rgba(255, 255, 255, .3); border-top-color: #fff; animation: girar .8s linear infinite; }
@keyframes girar { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2.4s; } }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--card); padding: 10px 18px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 20; }
#toast.visible { opacity: 1; } #toast.error { background: var(--danger); color: #fff; }

/* celular */
@media (max-width: 800px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: column; }
  .menu-btn { display: block; }
  .side nav, .side .pie { display: none; }
  body.menu-abierto .side nav, body.menu-abierto .side .pie { display: flex; flex-direction: column; }
  .contenido { padding: 16px; }
  .grid3 { grid-template-columns: 1fr; }
  dl.datos { grid-template-columns: 1fr; } dl.datos dt { margin-top: 6px; }
  .item { flex-direction: column; } .item-monto { text-align: left; }
}
@media print {
  body > *:not(#modal) { display: none !important; }
  .modal-backdrop { position: static; background: none; display: block; padding: 0; }
  .modal { max-height: none; width: 100%; border: 0; }
  .no-print { display: none !important; }
}