:root {
  --fondo: #f3f6f9; --superficie: #ffffff; --texto: #13212e; --suave: #5b6b7a; --borde: #d9e1e8; --linea: #eef2f5;
  --primario: #0f3d5e; --primario-2: #1d5f8f; --ok: #13795b; --ok-f: #e3f4ee; --mal: #b3261e; --mal-f: #fbe9e7;
  --aviso: #8a5a00; --aviso-f: #fff4dc; --neutro-f: #eef2f5; --menu: #0f2a3d; --menu-t: #c9d8e4;
}
@media (prefers-color-scheme: dark) {
  :root { --fondo: #0d1620; --superficie: #16222e; --texto: #e7eef5; --suave: #9aabbb; --borde: #2a3947; --linea: #1f2d3a;
          --primario: #4ea3d8; --primario-2: #74b9e4; --ok: #3cc796; --ok-f: #133328; --mal: #ff7b73; --mal-f: #3a1d1b;
          --aviso: #f0b64b; --aviso-f: #3a2c10; --neutro-f: #1f2d3a; --menu: #0a1219; --menu-t: #b3c4d3; }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--fondo); color: var(--texto); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.oculto { display: none !important; }
a { color: var(--primario-2); }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 18px 0 8px; }
.error { color: var(--mal); min-height: 1.2em; margin: 0; }
.pequeno { font-size: 12px; }
.suave { color: var(--suave); }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.caja-login { background: var(--superficie); border: 1px solid var(--borde); border-radius: 16px; padding: 28px; width: 100%; max-width: 360px;
              display: flex; flex-direction: column; gap: 12px; text-align: center; }
.caja-login img { margin: 0 auto; border-radius: 12px; }
.caja-login label { text-align: left; }

/* estructura */
.shell { display: flex; min-height: 100vh; }
.menu { width: 220px; background: var(--menu); color: var(--menu-t); flex-shrink: 0; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.menu-cab { display: flex; align-items: center; gap: 10px; padding: 16px; font-weight: 700; color: #fff; }
.menu-cab img { width: 30px; height: 30px; border-radius: 8px; }
.menu nav a { display: block; padding: 9px 18px; color: var(--menu-t); text-decoration: none; border-left: 3px solid transparent; }
.menu nav a:hover { background: rgba(255,255,255,.05); }
.menu nav a.activo { background: rgba(255,255,255,.08); color: #fff; border-left-color: #2fb88a; }
.menu nav .sep { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; padding: 14px 18px 4px; opacity: .6; }
.principal { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.cabecera { display: flex; align-items: center; gap: 10px; padding: 10px 20px; background: var(--superficie); border-bottom: 1px solid var(--borde);
            position: sticky; top: 0; z-index: 500; }
.cabecera .empresa { font-weight: 600; }
.cabecera .usuario { color: var(--suave); }
.espacio { flex: 1; }
#btnMenu { display: none; }
.contenido { padding: 20px; max-width: 1400px; width: 100%; }
@media (max-width: 860px) {
  .menu { position: fixed; left: -240px; z-index: 900; transition: left .2s; box-shadow: 0 0 30px rgba(0,0,0,.3); }
  .menu.abierto { left: 0; }
  #btnMenu { display: inline-block; }
  .cabecera .usuario { display: none; }
  .contenido { padding: 14px; }
}

/* controles */
input, select, textarea { font: inherit; color: var(--texto); background: var(--superficie); border: 1px solid var(--borde); border-radius: 8px; padding: 7px 10px; }
textarea { width: 100%; min-height: 90px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--suave); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--texto); }
.btn { font: inherit; font-weight: 600; border: 1px solid var(--borde); background: var(--superficie); color: var(--texto); padding: 7px 14px;
       border-radius: 8px; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--primario-2); }
.btn.primario { background: var(--primario); border-color: var(--primario); color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primario { color: #081521; } }
.btn.peligro { color: var(--mal); }
.btn.pequeno { padding: 4px 10px; font-size: 12px; }
.btn.icono { padding: 4px 10px; font-size: 18px; }
.btn:disabled { opacity: .5; cursor: default; }
.barra-herr { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin: 12px 0; }
.titulo-pag { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; justify-content: space-between; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.acciones { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }

/* tarjetas */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 12px 0 18px; }
.kpi { background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px; padding: 14px 16px; }
.kpi .v { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi .t { color: var(--suave); font-size: 13px; }
.panel { background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.nota { background: var(--aviso-f); color: var(--aviso); border-radius: 10px; padding: 10px 14px; margin: 10px 0; }

/* tablas */
.tabla-env { overflow-x: auto; background: var(--superficie); border: 1px solid var(--borde); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--linea); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--suave); background: var(--neutro-f); position: sticky; top: 0; }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.anulada td { opacity: .5; text-decoration: line-through; }
tr.detalle td { background: var(--fondo); }
.vacio { padding: 26px; text-align: center; color: var(--suave); }
.miniatura { width: 44px; height: 44px; object-fit: cover; border-radius: 8px; cursor: zoom-in; display: block; background: var(--neutro-f); }

/* etiquetas */
.tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--neutro-f); color: var(--suave); white-space: nowrap; }
.tag.ok { background: var(--ok-f); color: var(--ok); }
.tag.mal { background: var(--mal-f); color: var(--mal); }
.tag.aviso { background: var(--aviso-f); color: var(--aviso); }

/* turnos */
.semana td { min-width: 96px; font-size: 12px; }
.semana .h { display: block; background: var(--neutro-f); border-radius: 6px; padding: 2px 6px; margin: 2px 0; white-space: nowrap; }
.dia-turno { display: grid; grid-template-columns: 90px 1fr; gap: 8px; align-items: start; padding: 8px 0; border-bottom: 1px solid var(--linea); }
.rangos { display: flex; flex-direction: column; gap: 6px; }
.rango { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.lista-check { max-height: 220px; overflow: auto; border: 1px solid var(--borde); border-radius: 8px; padding: 8px; display: grid;
               grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 4px; }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(5, 15, 25, .55); z-index: 2000; display: grid; place-items: center; padding: 16px; }
.modal-caja { background: var(--superficie); border-radius: 14px; padding: 20px; width: 100%; max-width: 640px; max-height: 92vh; overflow: auto; position: relative; }
.modal-caja.ancha { max-width: 980px; }
.modal .cerrar { position: absolute; right: 10px; top: 6px; border: none; background: none; font-size: 26px; color: var(--suave); cursor: pointer; }
.foto-grande { max-width: 100%; border-radius: 10px; display: block; margin: 0 auto; }
.codigo { font-size: 42px; font-weight: 700; letter-spacing: 8px; text-align: center; font-variant-numeric: tabular-nums; padding: 12px;
          background: var(--neutro-f); border-radius: 12px; margin: 10px 0; }

/* enrolamiento */
.enrolar { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 14px; }
@media (max-width: 640px) { .enrolar { grid-template-columns: 1fr; } }
.enrolar video { width: 100%; border-radius: 12px; background: #000; transform: scaleX(-1); aspect-ratio: 4/3; object-fit: cover; }
.muestras { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; align-content: start; }
.muestras img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; }
.muestra { position: relative; }
.muestra button { position: absolute; top: 2px; right: 2px; border: none; border-radius: 50%; width: 22px; height: 22px; background: rgba(0,0,0,.6);
                  color: #fff; cursor: pointer; }
.legal { font-size: 12px; color: var(--suave); background: var(--neutro-f); border-radius: 8px; padding: 10px; }

.mapa { height: 520px; border-radius: 12px; border: 1px solid var(--borde); }
.mapa.bajo { height: 340px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--texto); color: var(--fondo); padding: 10px 18px;
         border-radius: 10px; z-index: 3000; max-width: 90vw; box-shadow: 0 6px 24px rgba(0,0,0,.25); }
.toast.mal { background: var(--mal); color: #fff; }